WO2010070722A1 - Handle apparatus for operation machine and operation machine equipped with the same - Google Patents

Abstract

Provided are a handle apparatus for an operation machine the operability of which is improved since the handle apparatus can be operated even when supported with one hand, and the operation machine equipped with the handle apparatus. The handle apparatus (4) has an operation handle (4A) and two clutch levers (5A, 5B). The respective clutch levers (5A, 5B) are provided at positions where the clutch levers (5A, 5B) can be grasped together with the operation handle (4A) with one hand from the same direction when the operator grasps the operation handle (4A) with the one hand.

Description

Work device handle device and work device equipped with the same

The present invention relates to a work machine that includes a plurality of drive units, and operates while the operator walks, and in particular, an operation handle that is gripped by the operator, and a clutch lever that operates each clutch of the plurality of drive units. It is related with the handle device for working machines provided with this.

2. Description of the Related Art Conventionally, for example, a small snowplow is known as a working machine that includes a plurality of driving units and works while a pilot is walking (see, for example, Patent Documents 1 and 2).
Here, this type of snowplow includes a handle device having an operation handle held by a driver and a plurality of clutch levers corresponding to driving units such as a traveling unit and a working unit for snow removal. The operator can operate the clutch by grasping the clutch lever of the handle device simultaneously with the operation handle or by grasping only the operation handle.
Japanese Patent Laying-Open No. 2005-307507 JP 2003-336239 A

[Problems to be solved by the invention]
However, according to the conventional snow remover, the operator needs to operate the operation handle and the plurality of clutch levers with both hands. Therefore, there is still room for improvement in improving the operability with one hand.
That is, for example, in the technique described in Patent Document 1, the auger clutch (73) is configured to be switched by manually operating the auger switch (74). Therefore, the operator must operate the auger clutch (73) by holding the operating handle with one hand and releasing the operating handle with the other hand. Therefore, the auger clutch (73) cannot be operated with the operation handle supported by only one hand. Therefore, it is insufficient for improving the operability with one hand.

Further, for example, in the technique described in Patent Document 2, although both the working unit for snow removal and the clutch of the traveling unit are operated by gripping the operation handle, the plurality of clutches and the like are not operated simultaneously with one hand. (For example, paragraph 0013 of the same literature). Therefore, similar to the technique described in Patent Document 1, there are still problems to be solved in order to further improve the operability with one hand.
Accordingly, the present invention has been made paying attention to such problems, and it is an object of the present invention to provide a work machine handle device that can further improve the operability with one hand and a work machine having the same. It is said.

[Means for solving problems]
In order to solve the above-mentioned problem, a first aspect of the present invention is used in a work machine in which a pilot works while walking, and includes an operation handle gripped by the pilot and clutches of a plurality of drive units. A handle device including a plurality of clutch levers to be operated, wherein the plurality of clutch levers can be gripped together with the operation handle from the same direction with one hand when the operator holds the operation handle with the one hand. All are provided, and when the operator grips one of the plurality of clutch levers and the operation handle, the power to the drive unit corresponding to the gripped clutch lever is connected and the grip is When the operator releases his / her hand from the clutch lever, it returns to a position separated from the operation handle, and the power to the corresponding drive unit is cut off. It is characterized in that is adapted to be.

According to the work device handle device according to the first aspect of the present invention, any one of the plurality of clutch levers can be gripped from the same direction together with the operation handle with the one hand when the operator holds the operation handle with one hand. Since it is provided at the right position, it is possible to connect a plurality of clutches or only one clutch by turning the hand from the front of the vehicle body and grasping the operation handle. Therefore, the operability with one hand can be further improved.

Here, in the work implement handle device according to the first aspect of the present invention, for example, the operation handle has two arm portions, and the base portions of the two arm portions are the vehicle body of the work implement. Are connected to both sides in the width direction, and a middle portion thereof is provided to project rearward from the vehicle body, and the tip portions of the two arm portions are formed in a loop shape in which the tip portions are continuous. Thus, it is preferable that the gripping portion is gripped by the operator.

In such a configuration, the grip portion of the operation handle is configured in a loop shape in which the tip portions of the left and right arms are continuous, so that the grip angle by the operator's hand is diversified, and the degree of freedom of the grip position Spread. Therefore, the operability of the operator can be further improved. Further, since the operation handle and the plurality of clutch levers can be grasped with one hand, the support posture of the operator can be diversified. Therefore, the operability of the operator can be further improved.

In the present specification, the “loop shape” refers to a shape that is smoothly connected by a curve over the entire gripping portion. As this “loop shape”, the grip portion includes a shape in which one or a plurality of arcs are continuous, and includes, for example, a “U-shape”. This is because the “U-shape” is a shape in which the left and right straight portions are smoothly connected by a curved portion at the center. On the other hand, for example, “U-shape” is not included in “loop shape”. The “U-shape” has a right and left straight portion and a central straight portion, and these three straight portions are connected integrally by two left and right curved portions. It is because it cannot be said that it is a shape which is smoothly connected by a curve over the entire “character shape”.

Furthermore, in the handle device for a work machine according to the first aspect of the present invention, for example, each of the plurality of clutch levers is provided in a both-sided state so as to connect two arms of the operation handle, and left and right ends. The arm is pivotally supported by each arm, and is formed in a loop shape that follows the loop shape of the operation handle when the operator grips each clutch lever and the operation handle together. It is preferable.

In such a configuration, each clutch lever is also formed in a loop shape that follows the loop shape of the operation handle, so that the operator can move each clutch lever at any position of the loop shape of the operation handle. It is more suitable as a configuration in which a plurality of clutch operations can be easily performed simply by grasping.
Further, in such a configuration, each clutch lever is provided so as to connect the two arm portions of the operation handle, and the left and right end portions are pivotally supported by the respective arm portions. Even when the operator changes the grip position of the operation handle, the clutch operation of each clutch lever can be easily performed. Furthermore, since each clutch lever is provided in a both-sided state so as to connect the two arm portions of the operation handle, the rigidity of the plurality of clutch levers can be improved.

Further, in the work device handle device according to the first aspect of the present invention, for example, any one of the plurality of clutch levers protrudes so as not to overlap another clutch lever, and only the other clutch lever is The plurality of clutch levers have a loop shape of the operation handle except for the convex portion in a posture when the operator grips the operation lever with the operation portion. It is preferable to form a loop shape following the above.

In such a configuration, a convex portion is provided on one of the clutch levers so that it can be gripped together with the operation handle. Therefore, a convex portion is provided while gripping another clutch lever other than the clutch lever. The clutch lever can be easily released. Therefore, for example, if the work machine is a snow remover, the grip of the clutch lever provided with the convex portion can be easily released, so even more stable when switching from snow removal work to running without snow removal. Traveling is possible.

Furthermore, in the handle device for a work machine according to the first aspect of the present invention, the operation handle is formed by bending its side view into a substantially L shape. In this and the posture when the operator grips the operation handle, it is preferable that the operation handle is formed to be bent in a substantially L shape so as to follow the operation handle formed to be bent in a substantially L shape. .

With such a configuration, it is possible to further improve the diversity of grip angles by the operator's hand. Therefore, it is suitable for further improving the operability of the pilot, and particularly suitable for further improving the operability of the pilot when the turning motion is performed by the driver's force.
Further, in the work equipment handle device according to the first aspect of the present invention, for example, the operation handle has an auxiliary handle protruding laterally on at least one of the left and right sides thereof, and the auxiliary handle includes the plurality of auxiliary handles. It is preferable that the clutch lever is provided so as not to interfere with the range in which the clutch lever rotates and the operation thereof.

With such a configuration, in addition to the above-described operations and effects, when one hand is released from the clutch lever, the auxiliary handle can be gripped with the other hand. Therefore, the degree of freedom of the operator's gripping position according to the road surface condition is further increased, which is more preferable for maintaining a more stable posture.
Furthermore, in order to solve the above-described problem, a second aspect of the present invention includes a handle device having a plurality of clutch levers that operate the respective clutches of the plurality of drive units, and an operation handle that the operator grips. A working machine in which a pilot works while walking, and is characterized in that the handle device includes the handle device for a working machine according to the first aspect of the present invention.

According to the work machine according to the second aspect of the present invention, the handle device for the work machine according to the first aspect of the present invention is provided as the handle device. Can be grasped with one hand from the same direction together with the operation handle. Therefore, by turning the hand from the front of the vehicle body and grasping the operation handle, it is possible to connect a plurality of clutches or to connect only one clutch. Therefore, the operability with one hand can be further improved.

1 is a perspective view of an embodiment of a snowplow shown as an example of a work machine according to the present invention. It is a block diagram explaining the clutch mechanism part of the snow remover shown in FIG. It is a side view of the snow remover shown in FIG. It is a front view of the snow remover shown in FIG. It is a rear view of the snow remover shown in FIG. FIG. 6 is a diagram ((a) to (c)) for explaining the configuration and operation of an embodiment of the handle device according to the present invention. It is a figure ((a)-(b)) explaining the modification of the handle apparatus which concerns on this invention, (a) is the front view, (b) is a side view of the part of a handle apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow remover 2 Car body 3 Support pipe 4 Handle apparatus 4A Operation handle 5 Clutch lever 5A Traveling clutch lever 5B Auger clutch lever 6 Crawler device (working part)
7 Engine 8 Blower 9 Shuter 10 Auger device (traveling part)
DESCRIPTION OF SYMBOLS 11 Drive part 12A, 12B Power transmission mechanism 13 Drive shaft 20 Auger blade 50 Light 51 Headlight 60 Auxiliary handle

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
FIG. 1 is a perspective view of an embodiment of a snowplow shown as an example of a work machine provided with a work machine handle device according to the present invention. In the figure, symbol F indicates the front of the vehicle body 2 and symbol R indicates the rear of the vehicle body 2. FIG. 2 is a block diagram illustrating a clutch mechanism portion of the snowplow shown in FIG.
As shown in FIG. 1, the snowplow 1 includes an auger device 10 at the front (F) of the vehicle body 2 and a crawler device 6 at the lower part of the rear (R) of the vehicle body 2. Further, the vehicle body 2 is provided with a handle device 4 at the rear part thereof. The handle device 4 includes an operation handle 4A and a clutch lever 5.

The clutch lever 5 has a traveling clutch lever 5A and an auger clutch lever 5B as a plurality of clutch levers. As shown in FIG. 2, each of the clutch levers 5A and 5B can operate the clutch mechanisms 12a and 12b of the crawler device 6 and the auger device 10, respectively. As a result, the operator can perform snow removal work while walking by grasping the traveling clutch lever 5A and the auger clutch lever 5B while grasping the operation handle 4A.

Hereinafter, the snow remover 1 will be described in more detail. FIG. 3 is a side view of the snow removal machine shown in FIG. 1, in which a portion of the exterior is broken away. 4 is a front view thereof, FIG. 5 is a rear view thereof, and FIG. 6 ((a) to (c)) is a view for explaining the configuration and operation of the handle device. Is shown.
As shown in FIG. 3, the snowplow 1 has an engine 7 mounted as a drive source at a substantially central portion of the vehicle body 2. The engine 7 is covered with a bonnet 30 that can rotate around a support shaft 32 on the operator side from above. A fuel tank 40 that supplies fuel to the engine 7 is provided on the bonnet 30. On the bonnet 30, a light 50 that is turned on during work is attached. Further, headlights 51 are attached to the left and right front sides of the bonnet 30. These headlights 51 are lit when the engine 7 is in operation.

A crawler device 6 having one crawler is provided as a traveling portion at the lower rear (R) of the vehicle body 2 and in the center in the width direction of the vehicle body 2. The crawler device 6 is connected to the output shaft 7a of the engine 7 through a power transmission mechanism 12A including a clutch mechanism 12a (see FIG. 2).
In addition, an auger device 10 is provided as a working unit at the front end of the vehicle body 2. As shown in FIG. 3, the auger device 10 has a drive unit 11 connected to the output shaft 7a of the engine 7 via a V-belt type power transmission mechanism unit 12B including a clutch mechanism 12b (see FIG. 2). Has been. In addition, a shooter 9 is erected on the upper portion of the auger device 10 in front of the vehicle body 2 with respect to the bonnet 30.

Further, as shown in FIG. 4, a blower 8 driven together with the auger device 10 by the engine 7 is disposed coaxially with the drive unit 11 of the auger device 10 in the center of the auger device 10 in the vehicle width direction. Note that the auger device 10 as the working unit and the crawler device 6 as the traveling unit correspond to the “drive unit” described in “Means for Solving the Problems”.
As shown in FIG. 3, the snow remover 1 has an operation handle 4 </ b> A attached to the rear end portion (right end portion in FIG. 3) of the vehicle body 2. A clutch lever 5 is provided in the vicinity of the operation handle 4A at a position where an operator can hold it with one hand from the same direction. The operation device 4A and the clutch lever 5 constitute a handle device 4.

Hereinafter, the handle device 4 will be described in detail.
The operation handle 4A has two left and right support pipes 3 as arms. Steel pipes are used for these two support pipes 3, and the base end portions 3 k are respectively connected to both sides in the width direction of the vehicle body 2. A middle portion 3t of the support pipe 3 is provided so as to protrude rearward from the vehicle body 2. Further, the support pipe 3 is formed in a loop shape (see FIGS. 4 and 5) in which both tip portions 3s thereof are continuous. The tip portion 3s serves as a grip portion 4h that the operator grips. As a result, the operation handle 4A improves the diversity of grip angles by the operator's hand in the grip portion 4h, and improves the operability of the driver.

In the example of the present embodiment, the upper portions of the left and right support pipes 3 (that is, the gripping portions 4h) are substantially viewed by smoothly connecting the straight portions of the left and right support pipes 3 with curved lines at the center. It is integrally formed so as to form a U shape (see FIGS. 4 and 5). Further, the width in the left-right direction of the substantially U-shaped portion is gradually reduced toward the top. Thereby, the diversity of the holding angle by the operator's hand in the holding part 4h is further improved, and the operability of the operator is further improved.

Further, as shown in FIG. 3, the tip portion 3s of the left and right support pipes 3 (that is, the gripping portion 4h of the operation handle 4A) has a portion K where the tip portion 3s and the middle portion 3t are connected to each other on the front side of the vehicle body 2. By being bent toward the side, the side view is formed in an approximately L shape. As a result, the operation handle 4A further improves the diversity of grip angles by the operator's hand in the grip portion 4h, and further improves the operator's operability. In particular, when the turning motion is performed by the driver's power, the operability of the driver can be further improved.

On the other hand, the clutch lever 5 has a traveling clutch lever 5A and an auger clutch lever 5B. The travel clutch lever 5A can operate the clutch mechanism 12a (see FIG. 2) of the crawler device 6 through the wire 5a. Similarly, the auger clutch lever 5B can operate the clutch mechanism 12b (see FIG. 2) of the auger device 10 via the wire 5b.

Here, the traveling clutch lever 5A and the auger clutch lever 5B are formed of steel pipes, and are provided in a both-sided state so as to connect the left and right support pipes 3 of the operation handle 4A as shown in FIG. Yes. Further, the left and right end portions of the clutch levers 5A and 5B are pivotally supported by the support pipes 3 via the support shafts 5j, whereby, as shown in FIGS. 6 (a) to (c), the support shafts 5j Each can be rotated individually.

The center of gravity of each clutch lever 5A, 5B is located on the front side (left side in FIG. 3) of the vehicle body 2 with respect to the support shaft 5j. Further, as shown in FIG. 3, the wires 5a and 5b are connected to the clutch mechanisms 12a and 12b via the tension coil springs 5c and 5d, and the clutch levers 5A and 5B are connected by the tension coil springs 5c and 5d. It is biased toward the front side of the vehicle body 2. Further, when the clutch levers 5A and 5B are at a position separated from the operation handle 4A (see FIG. 6A), the rotation position of the vehicle body 2 to the front side by the stopper 5s together with the operation handle 4A. It is restricted to a position where it can be held with one hand from the same direction.

As a result, when the operator grips one of the clutch levers 5A, 5B and the operation handle 4A together with the operation handle 4A from the same direction (in this example, the direction from the front side to the rear side of the vehicle body 2) ( 6 (b) to 6 (c)), when power to the drive unit corresponding to the gripped clutch lever is connected, and when the operator releases the hand from the gripped clutch lever, It returns to the position (refer Fig.6 (a)) spaced apart from the operation handle 4A, and the motive power to the drive part corresponding to this is cut | disconnected.

That is, when the travel clutch lever 5A is operated, the driving force of the engine 7 is transmitted to the crawler device 6 in accordance with the operation of the travel clutch lever 5A so that the travel is possible. When the auger clutch lever 5B is operated, the driving force of the engine 7 is transmitted to the driving unit 11 of the auger device 10 according to the operation, and the driving force transmitted to the driving unit 11 is transmitted to the auger device 10 and the blower 8. Are driven simultaneously.

Then, the driving force transmitted to the drive unit 11 is transmitted to the left and right auger blades 20 having a spiral shape via a drive shaft 13 (see FIG. 3) extending in the left and right directions, and the left and right auger blades 20 are rotated. As a result, while breaking the snow with the left and right auger blades 20, the broken snow is scraped up toward the blower 8 in the center of the vehicle width direction, and the scraped snow is spun up by the blower 8, so Snow is thrown away from the upper shooter 9.

Further, as shown in FIGS. 6 (b) to 6 (c), the clutch levers 5A and 5B are in a side view when the operator holds the clutch levers 5A and 5B and the operation handle 4A. It is formed to bend along the operation handle 4A. That is, the traveling clutch lever 5A and the auger clutch lever 5B have a loop shape that follows the loop shape of the operation handle 4A when viewed from the front, and in the example of this embodiment, the U-shape (see FIG. 4). The side view is bent in a substantially L shape (see FIG. 3).

As a result, the travel clutch lever 5A and the auger clutch lever 5B also improve the diversity of the grip angle by the operator's hand when operating the clutch, and further improve the operator's operability. It is possible. In particular, as in the case of the grip portion 4h of the operation handle 4A, the operability of the driver can be further improved when the turning motion is performed by the driver's force.
Further, the auger clutch lever 5B is provided with a convex portion 5h that allows only the operation handle 4A and the traveling clutch lever 5A to be held together when switching to traveling without snow removal. (See FIGS. 1, 5 and 6).

The convex portion 5h is formed by bending the steel pipe in the direction facing the operation handle 4A so as not to overlap with the traveling clutch lever 5A, which is another clutch lever, and projecting toward the rear of the vehicle body 2. In other words, the auger clutch lever 5B and the travel clutch lever 5A are arranged so that they follow the operation handle 4A except for the convex portion 5h of the auger clutch lever 5B when the operator and the operation handle 4A are gripped together. It is formed following the 4A loop shape. Accordingly, the operator can easily release his hand only from the auger clutch lever 5B while holding the operation handle 4A by using the convex portion 5h, and can hold only the traveling clutch lever 5A together with the operation handle 4A. It is possible.

The light 50 on the bonnet 30 is turned on when the auger clutch lever 5B is held by the operator, and the operator releases his hand from the auger clutch lever 5B and is away from the operation handle 4A. When it is in the state of returning to, it is turned off. Accordingly, the light 50 is turned on and off in conjunction with the auger clutch lever 5B, so that it is possible to accurately notify the surroundings that the work is being performed during the snow removal work.

Next, the operation of the snow removal machine 1 and its operation / effect will be described.
The operator appropriately operates the clutch lever 5 while holding the operation handle 4A of the snowplow 1. When the clutch levers 5A and 5B of the clutch lever 5 are operated, the clutch mechanisms 12a and 12b of the crawler device 6 and the auger device 10 are appropriately switched according to the operation of the clutch levers 5A and 5B. As a result, the snow remover 1 is driven by the driving force of the engine 7 to drive the crawler device 6 via the power transmission mechanism portion 12A and travel with the auger device 10 via the power transmission mechanism portion 12B. The blower 8 can be driven.

When the auger device 10 is driven, each of the left and right auger blades 20 breaks the snow while cutting it, scrapes the broken snow toward the blower 8 at the center in the vehicle width direction, and the collected snow is blown to the blower. The snow bounced up by 8 is thrown away from the shooter 9 far away. In this way, the operator can perform a desired snow removal operation while walking by holding the operation handle 4A and appropriately operating the clutch lever 5.

Here, since the handle device 4 of the snowplow 1 is provided with the clutch levers 5A and 5B at positions where the operator can grip the operation handle 4A with one hand, the clutch levers 5A and 5B are provided from the front of the vehicle body. By turning the levers 5A and 5B to grasp the operation handle 4A, the clutch mechanisms 12a and 12b can be connected, or only one clutch can be connected. Therefore, even with support with one hand, the snowplow 1 can be operated, and the operability thereof can be further improved.

Further, according to the handle device 4, the grip portion 4h of the operation handle 4A is configured by a loop shape in which the tip portions of the two left and right support pipes 3 are continuous. Diversification increases the degree of freedom of gripping positions. Therefore, the operability of the operator can be further improved. Further, since the operation handle 4A and the clutch levers 5A and 5B can be grasped with one hand, the support posture of the operator can be diversified. Therefore, the operability of the operator can be further improved.

In addition, since the handle device 4 has the clutch levers 5A and 5B formed in a loop shape, the operator holds the clutch levers 5A and 5B at any position of the loop shape of the operation handle 4A. You can easily operate multiple clutches. In addition, the operator can perform a plurality of clutch operations even when the grip position of the operation handle 4A is changed. Furthermore, the clutch levers 5A and 5B are provided in a both-sided state so as to connect the two support pipes 3 of the operation handle 4A, and the left and right end portions are pivotally supported by the support pipes 3 so as to be rotatable. The rigidity of each clutch lever 5A, 5B can be improved.

Furthermore, according to the handle device 4, the auger clutch lever 5B is provided with the convex portion 5h that allows the traveling clutch lever 5A to be gripped together with the operation handle 4A. The gripping of only the auger clutch lever 5B can be easily released only by changing the gripping position of the operation handle 4A while gripping the handle 4A and the traveling clutch lever 5A. Therefore, when switching from snow removal work to traveling without snow removal, the operation handle 4A can be held even when the clutch mechanism 12b of the auger device 10 is disengaged, so that even more stable traveling is possible.

Further, according to the handle device 4, the operation handle 4A is formed by bending its side view into a substantially L shape, and the clutch levers 5A and 5B are also operated with the operation handle 4A. In the posture when the operator grips, it is formed to be bent in a substantially L shape so as to follow the operation handle 4A formed to be bent in a substantially L shape. Diversity can be further improved. Therefore, the operability of the operator can be further improved. In particular, when the turning motion is performed by the driver's force, the operability of the driver can be further improved.

Further, the operation handle 4A in the handle device 4 has two left and right support pipes 3 as arms, and the two support pipes 3 have base end portions 3k connected to both sides in the width direction of the vehicle body 2, respectively. Since the middle portion 3t of the support pipe 3 is provided so as to protrude rearward from the vehicle body 2, the vehicle body 2 of the snowplow 1 can be applied according to the “leverage principle” when the operator applies weight from above the operation handle 4A. Is easy to face up.

The convex portion 5h provided on the auger clutch lever 5B is provided at the central portion in the left-right direction of the auger clutch lever 5B so that only the operation handle 4A and the traveling clutch lever 5A can be gripped together (FIG. 1). Therefore, when only traveling (when only the traveling clutch lever 5A is gripped), the operator grasps the upper center of the operation handle 4A without being aware of it. Then, the position farthest from the center of gravity of the vehicle body 2 is naturally grasped. Therefore, it is possible to perform the most efficient operation without being particularly conscious, and it becomes easier to turn the vehicle body upward with a light force.

Further, the clutch levers 5A and 5B have the center of gravity located on the front side of the vehicle body 2 with respect to the support shaft 5j and are separated from the operation handle 4A by the coil springs 5c and 5d. Therefore, when the operator releases the handle device 4, the clutch is automatically turned off. Therefore, the safety is high. In particular, the auger clutch lever 5B has a protruding portion 5h that is provided on the rear side of the vehicle body 2 and protrudes from the center of the auger clutch lever 5B. In the case of being pinched, the convex portion 5h is also pushed by the operator's body, so that it also has a fail-safe function that can be quickly and forcibly turned off.

The working machine according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, an example in which the driving source of the traveling unit is an engine has been described. However, the configuration is not limited thereto, and only the traveling unit may be driven by a motor. The drive source may be a so-called hybrid equipped with an engine and a motor.

For example, in the said embodiment, although the traveling part demonstrated by the example which is a crawler apparatus, not only this but a traveling part may drive | work with a wheel. Moreover, when it is a crawler apparatus, it does not specifically limit about the number of crawlers, For example, it is good also as a structure provided with a pair of crawlers on the right and left of a vehicle body.
In the above embodiment, the snow removal machine has been described as an example of a work machine that is operated while the operator handles the operation handle provided at the rear part of the vehicle body while walking, but the present invention is not limited to this. If it is a working machine which works while walking, for example, it can apply to various working machines, such as an agricultural machine.

Moreover, in the said embodiment, although the example provided with the auger apparatus 10 as a working part and the crawler apparatus 6 as a driving | running | working part was demonstrated as a some drive part, it is not restricted to this, With respect to various drive parts The number of the plurality of drive units and the plurality of clutch levers for operating the respective clutches of the drive units is not limited to two and may be three or more.

In the above-described embodiment, the operation handle and the clutch lever are formed in a loop shape, and the loop shape is substantially U-shaped when viewed from the front, and is bent into an approximately L-shape when viewed from the side. However, the present invention is not limited to this, and the handle device for a work machine according to the present invention has at least a plurality of clutch levers with one hand when the operator holds the operation handle with one hand. If it is provided at a position where it can be gripped from the same direction together with the operation handle, it is possible to control the work implement even if it is supported by one hand, and the operability can be further improved.

However, as described above, in order to further improve usability, such as improving the operator's workability and further diversifying the support posture of the operator, the operation The shape of the handle and the clutch lever should be formed into a loop shape, or the loop shape should be formed into a substantially U shape when viewed from the front, and further bent into a substantially L shape when viewed from the side. Is preferred.

Further, regarding the materials of the operation handle and the clutch lever, in the above embodiment, for example, the description has been given of the example in which the two support pipes 3 are formed of steel pipes, but the present invention is not limited thereto, and plastic pipes may be used. Furthermore, it is not limited to a pipe material, and may be a plate member made of steel or plastic.
Furthermore, in addition to the operation handle of the above-described embodiment, for example, as shown in FIG. 7, an auxiliary handle may be further provided.

As shown in FIG. 7A, the auxiliary handle 60 is formed in a loop shape by a steel pipe, and is fixed in a pair on the left and right of the operation handle 4A. The left and right auxiliary handles 60 are provided so as to project to the side of the operation handle 4A so as not to interfere with the range in which the clutch lever 5 (5A, 5B) rotates and the operation thereof. In this example, the pair of auxiliary handles 60 is provided on the left and right of the operation handle 4A. However, the present invention is not limited to this, and the auxiliary handle 60 may be provided on only one of the left and right. In this example, the left and right auxiliary handles 60 are welded to the operation handle 4A. However, the present invention is not limited to this, and the left and right auxiliary handles may be integrated or fixed. However, it is not limited to welding, but may be bolt fixing. Further, similarly to the materials of the operation handle and the clutch lever, not only the steel pipe but also a plastic pipe may be used, and not only the pipe material but also a steel or plastic plate member may be used.

Here, as shown in FIG. 7B, each auxiliary handle 60 is not formed so as to follow the operation handle 4A, and the upper vicinity 60k of the support shaft 5j of the clutch lever 5 (5A, 5B) The operation handle 4A is fixed at an angle different from that of the operation handle 4A so as to connect the left and right ends 60t of the upper portion of the grip portion 4h of the operation handle 4A. In this example, by providing each auxiliary handle 60 in front of the operation handle 4A in this way, interference with the operation of the clutch lever 5 (5A, 5B) is reliably prevented.

If such an auxiliary handle is provided, in addition to the operation and effect of the above-described embodiment, when one hand is released from the clutch lever 5 (5A, 5B), the auxiliary handle can be held with the other hand. That is, for example, normally, as described above, an easy operation can be performed by a clutch operation with one hand. If such an auxiliary handle is provided, even if the posture such as a rough road is difficult to stabilize, the clutch can be stably operated with one hand while holding the auxiliary handle 60 with the other hand. Therefore, the degree of freedom of the operator's gripping position according to the road surface condition is further increased, which is more preferable for maintaining a more stable posture.

Industrial applicability

As described above, according to the handle device for a work machine and the work machine according to the present invention, the operability with one hand can be further improved.

Claims (7)

A handle device that is used in a working machine that is operated while a pilot is walking, and that includes an operation handle that a pilot grips and a plurality of clutch levers that operate respective clutches of a plurality of drive units,
Each of the plurality of clutch levers is provided at a position where the operator can grasp the operation handle with the one hand from the same direction together with the operation handle when the operator holds the operation handle with one hand.
When the operator grips any one of the plurality of clutch levers and the operation handle, power to the drive unit corresponding to the gripped clutch lever is connected, and the driver operates the gripped clutch lever. When the handle is released, the operating device handle device is configured to return to a position separated from the operation handle and to cut the power to the corresponding drive unit. The operation handle has two arm portions, and the base end portions of the two arm portions are respectively connected to both sides in the width direction of the vehicle body of the work machine, and intermediate portions thereof protrude rearward from the vehicle body. Furthermore, the tip portions of the two arm portions are formed in a loop shape in which the tip portions are continuous to form a grip portion to be gripped by the operator. A handle device for a working machine as described in 1. Each of the plurality of clutch levers is provided in a supported state so as to connect the two arm portions of the operation handle, and the left and right end portions are pivotally supported by the respective arm portions, and each clutch lever and The work device handle device according to claim 2, wherein the handle device is formed in a loop shape that follows the loop shape of the operation handle in a posture when the operator grips the operation handle integrally. Any of the plurality of clutch levers has a convex portion that protrudes so as not to overlap with other clutch levers and allows only the other clutch levers to be gripped with the operation handle,
The plurality of clutch levers are formed in a loop shape that follows the loop shape of the operation handle, except for the convex portion, in a posture when the operator grips the operation lever and the operation lever. The handle device for a work machine according to claim 3. The operation handle is formed to be bent in a substantially L shape in a side view. Further, the plurality of clutch levers are also substantially L in a posture when the operator grips the operation handle. The work device handle device according to claim 3 or 4, wherein the handle device is formed in a substantially L shape so as to follow the operation handle formed by bending in a letter shape. The operation handle has an auxiliary handle extending laterally on at least one of the left and right sides thereof, and the auxiliary handle is attached so as not to interfere with the range of rotation of the plurality of clutch levers and the operation thereof. 6. The handle device for a work machine according to claim 1, wherein the handle device is a work machine. A work machine comprising a handle device having a plurality of clutch levers for operating the respective clutches of a plurality of drive units and an operation handle to be gripped by a pilot, wherein the pilot works while walking.
A working machine comprising the working machine handle device according to any one of claims 1 to 6 as the handle device.

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