DE102015013670A1 - drive arrangement - Google Patents

Abstract

Drive arrangement with a first and a second gear, wherein the output shafts of the two gears are spaced apart and aligned in parallel, wherein the distance of the output shafts is controllable, in particular by means of an actuator, wherein the two gears are supported against each other by means of two mutually parallel rods, wherein the first rod to the first gear is rotatably mounted, in particular with its first rod end, and the second gear is also rotatably mounted, in particular with its other rod end, wherein the second rod is rotatably mounted to the first gear, in particular with its first rod end, and to the second gear is also rotatably mounted, in particular with its other rod end.

Description

The invention relates to a drive arrangement.

As a drive arrangement, a geared motor, that is, a gear driven by a motor, usable.

From the DE 195 43 364 A1 a torque support for a pair of rollers is known, wherein coupling rods are arranged on the same side of the plane containing the axes of the output shafts of the two drives driving the rollers.

From the DE 40 19 363 C1 is a roller drive known.

From the DE 196 19 110 A1 is a pair of rollers known with different length coupling rods.

From the US 5,542,618 A is a roll press known.

The invention is therefore based on the object to develop a drive arrangement, wherein a simple torque support is providable.

According to the invention the object is achieved in the drive assembly according to the features indicated in claim 1.

Important features of the invention in the drive assembly are that the drive assembly is provided with a first and a second gear, wherein the output shafts of the two gears are spaced apart and aligned in parallel,
wherein the distance of the output shafts is controllable by means of a hydraulic linear drive, in particular wherein the associated linear axis is aligned perpendicular to the axes of the output shafts and connects these axes,
wherein the two gears are supported against each other by means of two mutually parallel rods,
wherein a first of the two rods is disposed on a first side to the plane containing the axes of the output shafts,
the other rod being arranged on the other side to this plane,
wherein the two gear boxes are cuboidal
wherein the first rod to the first gear is rotatably supported with its first rod end to a first receiving part which is fixed to a first side surface of the cuboid of the first gear, and is rotatably supported with its other rod end to the second gear on a second receiving part, which at a second side surface of the cuboid of the second transmission is attached,
wherein the second rod is rotatably supported to the second gear with its first rod end to a third receiving part which is fixed to a first side surface of the cuboid of the second gear, and rotatably supported with its other rod end to the first gear on a fourth receiving part, which at a second side surface of the cuboid of the first transmission is fixed.

The advantage here is that the center distance of the output shafts is variable, the two the output shafts driving gear are supported against each other. By mounted on the pivot bearings rods such support is carried out that when changing the axial distance nevertheless a support, however, the distance of the gear is changed to each other. The weight of the gears is dissipated as a lateral force on the output shafts to the driven devices. Thus, the transmission need no separate support devices or the like.

The axial distance can be executed by the hydraulic linear drive even with large weights of the rollers including driving geared motors. The cuboid design of the transmission allows a particularly simple structure. In addition, the output shaft is not located in the center of symmetry of the cuboid but with a distance thereto. In this way, the housing itself can be used as a rotary lever. Due to the particularly symmetrical design of the arrangement, wherein the rods is arranged on both sides of the plane spanned by the axes of the output shafts plane, a radially only slightly extended drive arrangement is realized.

Of course, the cuboids are only to be understood as coarse form, so that gear cover, rounding, bevels, elevations and depressions only deviate less than 10% from the ideal mathematical cuboid.

It is also important that the output shafts are each mounted in a bearing, wherein the respective bearing is received in a stationary part or in a stationary part by means of the linear actuator linearly movable part.

As a result of the mutual support, the gears are arranged, so to speak, freely suspended on the shafts or rollers rotatably mounted in the device to be driven.

In an advantageous embodiment, the first rod and the second rod have the same Length up. The advantage here is that a parallelogram-like support is achievable. Thus, the corner angle of the parallelogram corresponds to a respective center distance of the output shafts to each other. In addition, the axial distance of a linear actuator can be effected, wherein the parallelogram changes the corner angle. The advantage here is that the parallelogram allows the Achsabstandsänderung by a linear movement, ie by the linear actuator. For other supports that are not parallelogram-like, the center distance would have to be done on a correspondingly complicated curved path.

The parallelogram is arranged in a plane whose normal direction is aligned parallel to the axes of the output shafts.

In an advantageous embodiment, the two gears are identical and / or identical. Thus, only a single type of gear in the production is necessary.

In an advantageous embodiment, the pivot bearings of the rods are arranged at corner positions of an imaginary parallelogram,
in particular wherein the rotary bearings arranged on the first transmission have the same spacing as the rotary bearings arranged on the second transmission,
in particular, wherein the pivot bearings of the first rod have the same distance from each other as the pivot bearing of the second rod. The advantage here is that the linear actuator makes a Achsabstandsänderung feasible, so the Achsabstandsänderung is effected by a linear movement.

In an advantageous embodiment, the rotary bearings arranged on the first transmission have the same distance from one another as the rotary bearings arranged on the second transmission. The advantage here is that the pivot bearings are arranged according to the corners of an imaginary parallelogram.

In an advantageous embodiment, each of the output shafts is connected in each case by means of a coupling with a respective rotatably mounted shaft or roller,
wherein the distance of the shafts or rollers from each other is variable by an actuator. The advantage here is that manufacturing tolerances can be compensated.

In another advantageous embodiment, each of the output shafts is connected in each case by means of a shaft-hub connection with a respective rotatably mounted shaft or roller,
wherein the distance of the shafts or rollers by an actuator is variable from each other. Another advantage is that manufacturing tolerances are compensated.

In an advantageous embodiment, the first gear has a gear housing, on which two spaced-apart receiving parts are attached,
wherein the first receiving part has a pivot bearing for the first end of the first rod, wherein the second receiving part has a pivot bearing for the first end of the second rod,
wherein the second gear has a gear housing to which two further spaced-apart receiving parts are attached,
wherein the first further receiving part has a pivot bearing for the second end of the first rod, wherein the second further receiving part has a pivot bearing for the second end of the second rod. The advantage here is that a simple production is executable.

Further advantages emerge from the subclaims. The invention is not limited to the combination of features of the claims. For the skilled person, further meaningful combination possibilities of claims and / or individual claim features and / or features of the description and / or figures, in particular from the task and / or posing by comparison with the prior art task arise.

The invention will now be explained in more detail with reference to figures:

In the 1 is a drive arrangement according to the invention for two rolls 8th shown in plan view, wherein the axial distance of the roll axes is very small.

In the 2 an associated oblique view shown.

In the 3 the drive assembly is shown in plan view, now a larger center distance is set.

In the 4 an associated side view is shown.

In the 5 the drive assembly is shown in plan view, now an even greater center distance is set.

As shown in the figures, the drive assembly comprises two substantially cuboid gears whose output shafts 2 each via a coupling 40 with a respective roller 8th rotatably and are connected substantially coaxially.

The two roll axes are aligned parallel to each other. The center distance of the Roll axes and thus also the center distance of the output shafts 2 the two gears are adjustable.

For this purpose, the first roller by means of bearings in one with the ground 9 connected, so stored stationary part stored. The second roller 8th is by means of bearings 41 stored in a bearing receiving part, by means of a respective, by a linear actuator 6 movable lifting rod 7 is movable. During movement, the center distance of the two roller axes and thus also the distance between the two rollers changes 8th ,

The two gearboxes 1 are supported against each other. For this purpose, on the respective outer surface of each of the two gearboxes two receiving parts spaced apart from each other 3 arranged, in each of which a swivel joint 5 is received, by means of which a respective link rod 4 is received and thus rotatably mounted in the receiving part 3 , Every tie rod 4 is therefore relatively rotatable to each gear housing 1 ,

The gearboxes are constructed identically.

A first recording part 3 is arranged on a first side surface of the cuboid of the first gear, so on the side of the cuboid with the smallest area. A second receiving part is arranged on a second side surface of the cuboid of the second gear, wherein this second side surface has a larger area value than the first side surface and is arranged on the side facing the first gear side surface. Each of these two receiving parts 3 has a hinge 5 on, in which the articulated rod 4 each stored.

The other articulated rod 4 is in accordance symmetrically arranged receiving parts 3 by means of swivel joints 5 stored.

In total there are two tie rods 4 intended. The first of the two joint bars 4 is relatively rotatably mounted with its first end to the transmission housing 1 the first gear and with its other rod end relatively rotatably mounted to the transmission housing 1 of the second transmission. The second of the two joint rods 4 is relatively rotatably mounted to the transmission housing 1 the second transmission and with its other rod end relatively rotatably mounted to the transmission housing 1 of the first transmission.

Preferably, the two hinged rods 4 arranged parallel to each other by the hinges 5 Form corners of an imaginary parallelogram. The distance between the two arranged on the first gear swivel joints 5 to each other is the same size as the distance between the two arranged on the second gear swivel joints 5 to each other.

Through the two joint rods 4 and the distances of the two hinges fixed to the gears 5 So the parallelogram is determined with a remaining degree of freedom. This degree of freedom corresponds to the corner angle of a corner of the parallelogram.

As described above, the center distance of the roller axes and thus also the center distance of the output shaft axes of the two gears by means of linear actuators 6 controllable. The respectively set center distance thus defines the degree of freedom, ie corner angle, of the parallelogram.

The gearbox 1 So are about the tie rods 4 supported each other. Thus, they function mutually as a torque arm.

The output shafts 2 are by means of the rollers 8th over the camps 41 stored. The gears are connected to electric motors not shown in the figures. Here are the rotor shafts of the motors with the respective driving shafts 10 the gear rotatably connected. The housing of the respective motor is connected to the housing of the respective transmission. In this way, the respective engine is thus supported by the respective transmission.

Thus, the torque support is guaranteed even at different center distances.

The gearboxes are preferably helical gear or designed as bevel helical gear or as planetary gear.

For even lifting or lowering of the bearings 41 will not be a linear actuator 6 but there will be multiple linear actuators 6 , which are spaced apart but arranged parallel to each other, operated synchronously.

The respective linear actuator 6 is preferably designed as a hydraulic actuator.

In a further embodiment of the invention, not two rollers are driven by the gears but two other rotatably mounted parts whose distance from each other should be variable.

LIST OF REFERENCE NUMBERS

1

gearbox

2

output shaft

3

receiving part

4

joint rod

5

swivel

6

Linear Actuator

7

lifting rod

8th

roller

9

ground

10

driving wave

40

clutch

41

camp

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19543364 A1 [0003]
• DE 4019363 C1 [0004]
• DE 19619110 A1 [0005]
• US 5542618 A [0006]

Claims (7)

Drive arrangement having a first and a second gear, wherein the output shafts of the two gears are spaced apart and aligned in parallel, wherein the distance of the output shafts is controllable by means of a hydraulic linear drive, in particular with the associated linear axis is aligned perpendicular to the axes of the output shafts and this Axles connecting, characterized in that the two gears are supported against each other by means of two mutually parallel rods, wherein a first of the two rods is arranged on a first side to the plane containing the axes of the output shafts, wherein the other rod on the other Is arranged side to this plane, wherein the two gear boxes are cuboidal, wherein the first rod is rotatably mounted to the first gear with its first rod end to a first receiving part, which on a first side surface of the cuboid of the first Get is mounted riebes, and is rotatably supported with its other rod end to the second gear on a second receiving part which is fixed to a second side surface of the cuboid of the second transmission, wherein the second rod is rotatably mounted to the second gear with its first rod end at a third Receiving part, which is fixed to a first side surface of the cuboid of the second transmission, and is rotatably supported with its other rod end to the first gear on a fourth receiving part which is fixed to a second side surface of the cuboid of the first transmission. Drive arrangement according to claim 1, characterized in that with the output shaft of the first gear, a first roller is rotatably connected and with the output shaft of the second gear, a second roller is rotatably connected. Drive arrangement according to at least one of the preceding claims, characterized in that the first rod and the second rod have the same length, and / or that the two gears are made identical and / or identical. Drive arrangement according to at least one of the preceding claims, characterized in that the pivot bearings of the rods are arranged at corner positions of an imaginary parallelogram, in particular wherein the first gear arranged pivot bearing the same distance as the second gear arranged pivot bearing, in particular wherein the pivot bearing of the first rod the same distance from each other as the pivot bearing of the second rod. Drive arrangement according to at least one of the preceding claims, characterized in that the first gear arranged pivot bearing the same distance from each other as the second gear arranged pivot bearing. Drive arrangement according to at least one of the preceding claims, characterized in that each of the output shafts is connected in each case by means of a coupling with a respective rotatably mounted shaft or roller, wherein the distance of the shafts or rollers from each other is variable by an actuator. Drive arrangement according to at least one of the preceding claims, characterized in that the first gear has a gear housing to which two spaced-apart receiving parts are fixed, wherein the first receiving part has a pivot bearing for the first end of the first rod, wherein the second receiving part is a pivot bearing for the first end of the second rod, wherein the second gear has a gear housing to which two further spaced apart receiving parts are fixed, wherein the first further receiving part has a pivot bearing for the second end of the first rod, wherein the second further receiving part is a pivot bearing for having the second end of the second rod.

Images