CN205479043U - Can waterproof checking cylinder - Google Patents

Abstract

The utility model discloses a can waterproof checking cylinder, including braking cylinder body and protecgulum it constitutes to be provided with waterproof dirt catcher on the protecgulum, the shield covered in the front including fixed connection and setting straining dirt felt frame, strain dirt felt pan and sealing washer mount pad in the shield is constituteed to waterproof dirt catcher, it is connected with the shield to strain dirt felt frame, it fixes on straining dirt felt frame to strain the dirt felt pan, the sealing washer mount pad with strain dirt felt frame and be connected fixed being in the same place be provided with O shape sealing washer A between sealing washer mount pad and the shield inner wall. The utility model discloses a position that easily intakes at current checking cylinder sets up seal structure, and when preventing effectively that the checking cylinder from alleviating, the negative pressure that the rainwater formed in by the checking cylinder inhales in the cylinder body to play waterproof effect, improve the life of checking cylinder, ensure driving safety.

Description

A waterproof brake cylinder

technical field

The utility model belongs to the technical field of vehicle brake cylinders, in particular to a waterproof brake cylinder.

Background technique

The brake cylinder of railway vehicles is generally installed at the bottom of the vehicle, and the body of the vehicle will block rainwater from entering the cylinder, such as gondola cars and boxcars. However, for some models, such as flat cars, tank cars, cement trucks, etc., the car body does not completely block the brake cylinder, and rainwater can easily pour into the brake cylinder and enter the brake cylinder.

Existing brake cylinders of railway freight cars only have dust-proof function and no waterproof function. Once the brake cylinder is exposed to rain in rainy days, rainwater will easily flow into the inside of the brake cylinder, especially when the brake cylinder is relieved, the piston of the brake cylinder will There will be negative pressure on the right side, and rainwater will be drawn into the cylinder more easily, which will cause pollution and corrosion inside the brake cylinder, greatly reduce the service life of the brake cylinder, and affect driving safety.

Utility model content

The purpose of the invention of the utility model is to provide a waterproof brake cylinder that can effectively prevent rainwater from entering the brake cylinder to improve the service life of the brake cylinder and ensure driving safety.

The technical scheme of the utility model is realized in the following way: a waterproof brake cylinder, including a brake cylinder body and a front cover, is characterized in that: the front cover is provided with a waterproof dust filter, and the waterproof dust filter The composition includes a dust-proof cover fixedly connected to the front cover and a dust filter felt frame, a dust filter felt pad and a sealing ring mounting seat arranged in the dust-proof cover, the dust filter felt frame is connected with the dust-proof cover, and the dust filter felt pad is fixed On the dust filter felt frame, the sealing ring mounting seat is connected and fixed with the dust filter felt frame, and an O-shaped sealing ring A is arranged between the sealing ring mounting seat and the inner wall of the dustproof cover.

The waterproof brake cylinder described in the utility model has at least three installation tenons on the sealing ring mounting seat, and installation holes corresponding to the installation tenons on the dust filter felt frame. After the mounting tenon of the ring mounting seat is inserted into the corresponding mounting hole on the dust filter felt frame, the sealing ring mounting seat and the dust filter felt frame are connected together to form an inseparable composite component.

The waterproof brake cylinder described in the utility model is provided with a dust-proof ring mounting seat for installing the dust filter ring of the front cover in the front cover, and the dust-proof ring mounting seat is sleeved on the piston rod of the brake cylinder On the dust-proof ring mounting seat, a double-lip dust-proof ring is arranged between the dust-proof ring mounting seat and the piston rod, and on the dust-proof ring mounting seat, between the dust-proof ring mounting seat and the front cover An O-ring B is provided.

The utility model arranges a sealing structure at the position where the existing brake cylinder is easy to enter water, effectively prevents the rainwater from being sucked into the cylinder by the negative pressure formed in the brake cylinder when the brake cylinder is relieved, so as to play a waterproof role and improve the safety performance of the brake cylinder. The service life of the moving cylinder ensures driving safety.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is an enlarged view of the composition of the waterproof dust filter in Fig. 1 .

Fig. 3 is a schematic diagram of the connection between the sealing ring mounting seat and the dust filter felt frame in the composition of the waterproof dust filter of the present invention.

Fig. 4 is an enlarged view of the connection between the sealing ring mounting seat and the dust filter felt frame in Fig. 3 .

Fig. 5 is a waterproof schematic diagram of the end of the front cover in the utility model.

Fig. 6 is a structural schematic diagram of the dustproof ring mounting seat in the present invention.

Marks in the figure: 1 is the brake cylinder, 2 is the front cover, 3 is the waterproof dust filter, 4 is the dust cover, 5 is the dust filter felt frame, 6 is the dust filter felt pad, 7 is the sealing ring mounting seat, 8 is the O-shaped sealing ring A, 9 is the installation tenon, 10 is the dust filter ring of the front cover, 11 is the installation seat of the dust-proof ring, 12 is the piston rod, 13 is the double-lip dust-proof ring, 14 is the O-shaped sealing ring B, and 15 is the relief spring.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1-6, a waterproof brake cylinder includes a brake cylinder body 1 and a front cover 2, and a waterproof dust filter composition 3 is arranged on the front cover 2, and the waterproof dust filter composition 3 includes The dust-proof cover 4 fixedly connected on the front cover 2 and the dust filter felt frame 5, the dust filter felt pad 6 and the sealing ring mounting seat 7 arranged in the dust-proof cover 4, the dust filter felt frame 5 is connected with the dust-proof cover 4, The dust filter felt pad 6 is fixed on the dust filter felt frame 5, the sealing ring mounting seat 7 is connected and fixed with the dust filter felt frame 5, and an O O-ring A8, the O-ring A can prevent rainwater from entering the cylinder body through the gap between the dust cover and the sealing ring mounting seat, especially when the brake cylinder is relieved, a negative pressure is formed above the dust filter pad, if there is no O-shaped Sealing ring A, then rainwater just can enter cylinder body.

Wherein, at least three mounting tenons 9 are provided on the sealing ring mounting seat 7, and mounting holes corresponding to the mounting tenons 9 are provided on the dust filter felt frame 5, and the mounting tenons of the sealing ring mounting seat 7 9 After inserting into the corresponding installation hole on the dust filter felt frame 5, connect the sealing ring mounting base 7 and the dust filter felt frame 5 together to form an inseparable combined component.

As shown in FIG. 5 , a dustproof ring installation seat 11 for installing the front cover dust filter ring 10 is provided in the front cover 2, and the dustproof ring installation seat 11 is sleeved on the piston rod 12 of the brake cylinder. A double-lip dust-proof ring 13 is arranged on the dust-proof ring mounting seat 11 and between the dust-proof ring mounting seat 11 and the piston rod 12. The material of the double-lip dust-proof ring is polyurethane, which has high hardness and reduces the pressure. Small friction with the piston rod can prevent rainwater from entering the cylinder body from A; on the dust-proof ring mounting seat 11, an O-shaped sealing ring B14 is arranged between the dust-proof ring mounting seat 11 and the front cover 2, and the The O-shaped sealing ring B is installed on the step of the dust-proof ring mounting seat. By relieving the force of the spring 15, the O-shaped sealing ring B is deformed to play a sealing role and prevent rainwater from passing between the front cover and the dust-proof ring mounting seat. into the cylinder. The dust filter ring of the front cover is sealed by the O-shaped sealing ring B and the double-lip dust-proof ring to avoid direct contact with the atmosphere. The 89M lubricating grease stored in it reduces volatilization and oxidation deterioration, which is beneficial to the lubrication and rust prevention of the piston rod.

The utility model improves the structure of the three water leakage positions of A, B and C in Fig. 1, and plays a waterproof role through the setting of the sealing structure, effectively prevents rainwater from polluting and rusting the inside of the brake cylinder, and improves the use of the brake cylinder Lifespan ensures driving safety.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. A waterproof brake cylinder, comprising a brake cylinder body (1) and a front cover (2), characterized in that: the front cover (2) is provided with a waterproof dust filter composition (3), the The composition of the waterproof dust filter (3) includes the dust cover (4) fixedly connected to the front cover (2), the dust filter felt holder (5), the dust filter felt pad (6) and the sealing Ring mounting seat (7), the dust filter felt frame (5) is connected with the dust cover (4), the dust filter felt pad (6) is fixed on the dust filter felt frame (5), the sealing ring mounting seat (7 ) and the dust filter felt frame (5) are connected and fixed together, and an O-shaped sealing ring A (8) is arranged between the sealing ring mounting seat (7) and the inner wall of the dustproof cover (4). 2. The waterproof brake cylinder according to claim 1, characterized in that: at least three mounting tenons (9) are arranged on the sealing ring mounting seat (7), and the dust filter felt holder (5) There is a mounting hole corresponding to the mounting tenon (9), and the mounting tenon (9) of the sealing ring mounting seat (7) is inserted into the corresponding mounting hole on the dust filter felt frame (5), so that the sealing ring mounting seat ( 7) Connect with the dust filter felt frame (5) to form an inseparable combined component. 3. The waterproof brake cylinder according to claim 1 or 2, characterized in that: the front cover (2) is provided with a dust-proof ring mounting seat (11) for installing the front cover dust filter ring (10) , the dust-proof ring mounting seat (11) is sleeved on the piston rod (12) of the brake cylinder, on the dust-proof ring mounting seat (11), the dust-proof ring mounting seat (11) and the piston rod ( 12) is provided with a double-lip dustproof ring (13), and an O-ring seal is arranged on the dustproof ring mounting seat (11) and between the dustproof ring mounting seat (11) and the front cover (2) B (14).