High-speed rail brake cylinder piston assembly

Abstract

The utility model discloses a high-speed rail brake cylinder piston assembly which comprises a main body module. The main body module comprises a cylinder body, piston assemblies symmetrically arranged in an inner cavity of the cylinder body and extending out of the cylinder body, brake pads fixed to the ends of the piston assemblies, a threaded pipe fixed to one side of the cylinder body, a sleeve installed on the threaded pipe in a threaded connection mode, and a screw with one end connected with the piston assemblies and the other end extending into an inner cavity of the sleeve. The cylinder body is used for installing other assemblies, two cavities are symmetrically formed in an inner cavity of the cylinder body, in addition, a U-shaped pipe is arranged on the outer side face of the cylinder body, and the U-shaped pipe is connected with the screw rod in a sleeved mode. The piston assembly of the brake cylinder of the high-speed rail has the advantages of being high in stability and safety, the piston assembly of the brake cylinder of the high-speed rail is provided with a U-shaped pipe, and the two ends of the U-shaped pipe are both communicated with the opposite cavities.

Description

Technical Field

[0001] The utility model relates to the technical field of brake cylinder pistons, in particular to a high-speed railway brake cylinder piston assembly. Background Art

[0002] With the continuous development of my country's high-speed rail transportation, higher requirements have been placed on the safety and reliability of railway vehicle braking devices. Currently, common brake pump assemblies are basically composed of a power-assisting unit and a master cylinder. The master cylinder uses a piston to pressurize, maintain, and relieve the brake fluid. In order to ensure the position of the piston after assembly and the correct return of the piston after pressure buildup, it is necessary to define the correct height of the spring assembly and provide a suitable return force for the piston in the initial position to prevent residual pressure in the master cylinder from causing vehicle drag.

[0003] The brake cylinder piston assembly under the existing technology has the following main disadvantages during use: the existing brake cylinder piston assembly is generally a single-cylinder and single-piston setting. During long-term operation, the piston is prone to aging and damage, which in turn leads to hydraulic oil leakage, reduced piston braking performance, and safety risks. Therefore, there is room for improvement. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted by the utility model is: a high-speed railway brake cylinder piston assembly, including: a main body module, the main body module includes a cylinder body, a piston assembly symmetrically arranged in the inner cavity of the cylinder body and extending out of the cylinder body, a brake pad fixed on the end of the piston assembly, a threaded tube fixed on one side of the cylinder body, a sleeve installed on the threaded tube through a threaded connection, a screw rod with one end connected to the piston assembly and the other end extending into the inner cavity of the sleeve, a movable plate movably sleeved on the screw rod, a nut sleeved on the screw rod and located on one side of the movable plate, and a spring connecting the movable plate and the outer side surface of the cylinder body.

[0006] The inner cavity of the cylinder body is symmetrically provided with two chambers, and the piston assembly comprises two piston bodies arranged in opposite chambers, a connecting rod connecting the opposite piston bodies, and a support with one end fixed on the piston body and the other end extending out of the cylinder body.

[0007] In a preferred example, the utility model can be further configured as follows: a U-shaped tube is provided on the outer side of the cylinder body, both ends of the U-shaped tube are connected to the opposite chambers, and an oil injection pipe is installed on the U-shaped tube.

[0008] In a preferred example, the utility model can be further configured as follows: a sealing ring is sleeved on the outer side surface of the piston body.

[0009] In a preferred example, the utility model can be further configured as follows: an internal thread is provided on the inner side surface of the sleeve, and the internal thread is engaged with the threaded pipe.

[0010] In a preferred example, the present invention can be further configured as follows: the screw rod is meshed with the nut.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] 1. In the utility model, two chambers are symmetrically arranged in the cylinder body, and a piston assembly is arranged. The piston assembly consists of two pistons, a connecting rod and a support. The two pistons are arranged in the two chambers respectively, and a U-shaped tube is arranged between the oil filling pipe and the chamber to connect each chamber. Through the setting of double chambers and double pistons, when the seal of a single piston fails, the other piston can still drive the brake pad to move, thereby ensuring the braking effect, effectively improving the safety performance of the brake cylinder piston assembly, and further increasing the practical performance.

[0013] 2. In the utility model, a screw rod extending out of the cylinder body is provided on one side of the piston assembly, and a movable plate is sleeved on the screw rod. A spring is provided on one side of the movable plate and connected to the outer side surface of the cylinder body as a reset component. At the same time, a nut is sleeved on the screw rod. When in use, the user can adjust the position of the nut on the screw rod by turning the nut, that is, adjust the position of the movable plate. The reset elastic force of the spring can be adjusted by adjusting the position of the movable plate. The structure is simple, convenient and practical. In addition, a threaded tube is provided on the outer side of the cylinder body, and a sleeve is installed on the threaded tube through a threaded connection. The setting of the sleeve can provide a protective effect on the spring to prevent the spring from being corroded and damaged by external factors, thereby further increasing the practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model.

[0016] Reference numerals:

[0017] 100. Main body module; 110. Cylinder body; 111. Chamber; 112. U-shaped tube; 113. Oil filling pipe; 120. Piston assembly; 121. Piston body; 1211. Sealing ring; 122. Connecting rod; 123. Support; 130. Brake pad; 140. Threaded tube; 150. Sleeve; 160. Screw; 170. Movable plate; 180. Nut; 190. Spring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0019] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0020] Embodiment 1:

[0021] Combination Figure 1-2 As shown, this embodiment provides a high-speed railway brake cylinder piston assembly, including: a main body module 100.

[0022] Among them, the main module 100 includes a cylinder body 110, a piston assembly 120 symmetrically arranged in the inner cavity of the cylinder body 110 and extending out of the cylinder body 110, a brake pad 130 fixed on the end of the piston assembly 120, a threaded tube 140 fixed on one side of the cylinder body 110, a sleeve 150 installed on the threaded tube 140 through a threaded connection, a screw 160 with one end connected to the piston assembly 120 and the other end extending into the inner cavity of the sleeve 150, a movable plate 170 movably sleeved on the screw 160, a nut 180 sleeved on the screw 160 and located on one side of the movable plate 170, and a spring 190 connecting the movable plate 170 and the outer side of the cylinder body 110.

[0023] The cylinder body 110 is used to install other components. Two chambers 111 are symmetrically arranged in the inner cavity of the cylinder body 110. In addition, a U-shaped tube 112 is arranged on the outer surface of the cylinder body 110. Both ends of the U-shaped tube 112 are connected to the opposite chambers 111. At the same time, an oil filling pipe 113 is installed on the U-shaped tube 112. When the hydraulic oil is sent into the cylinder body 110 through the oil filling pipe 113, it can evenly enter the two chambers 111 through the U-shaped tube 112 to push the piston assembly 120 to move.

[0024] The piston assembly 120 includes two piston bodies 121 arranged in relative chambers 111, a connecting rod 122 connecting the relative piston bodies 121, and a support 123 with one end fixed on the piston body 121 and the other end extending out of the cylinder body 110. The piston body 121 is arranged in the chamber 111 to facilitate movement under the action of hydraulic oil. In addition, the connecting rod 122 fixes the two piston bodies 121 together to ensure synchronous movement between the two. When the seal of one side of the piston fails, the piston on the other side can still drive the brake pad 130 to move. The support 123 is used to install the brake pad 130. The brake pad 130 moves under the drive of the piston and presses against the brake pad to brake.

[0025] The threaded tube 140 is used to install the sleeve 150, and the sleeve 150 is used to form a sealed environment to provide protection for components such as the spring 190 to prevent the spring 190 from being corroded and damaged by external factors. An internal thread is provided on the inner side surface of the sleeve 150, and the internal thread is engaged with the threaded tube 140 to facilitate the installation and disassembly of the sleeve 150.

[0026] One end of the screw rod 160 is fixed on one side of the piston, and the other end extends into the inner cavity of the sleeve 150. The movable plate 170 is sleeved on the screw rod 160 for installing the spring 190. One end of the spring 190 is fixed to the movable plate 170, and the other end is fixed to the outer side of the cylinder body 110, and is used to drive the movable plate 170 to reset. The movable plate 170 is reset by the screw rod 160 driving the piston assembly 120 to reset, and then drives the brake pad 130 to reset. The nut 180 is engaged with the screw rod 160 to limit the movable plate 170, and at the same time, it is used to adjust the position of the movable plate 170 on the screw rod 160 by rotating the nut 180, that is, to adjust the reset elastic force of the spring 190.

[0027] The working principle and use process of the utility model are as follows: during braking, the hydraulic oil enters the U-shaped tube 112 through the oil inlet pipe, and is evenly injected into the two chambers 111 through the U-shaped tube 112. With the injection of the hydraulic oil, the piston body 121 is driven to move toward the outside of the cylinder body 110. The movement of the piston body 121 drives the brake pad 130 to move through the support 123, so that the brake pad 130 is close to the brake pad for braking. When the braking is completed, the spring 190 releases the elastic force and drives the movable plate 170 to reset. The reset of the movable plate 170 drives the piston assembly 120 to reset through the screw 160, that is, drives the brake pad 130 to reset, which is convenient for the next braking. In addition, when the seal of a single piston fails, the piston on the other side can still drive the brake pad 130 to move, thereby ensuring the stability of the braking.

[0028] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-speed railway brake cylinder piston assembly, comprising: A main body module (100), characterized in that the main body module (100) comprises a cylinder body (110), a piston assembly (120) symmetrically arranged in the inner cavity of the cylinder body (110) and extending out of the cylinder body (110), a brake pad (130) fixed to the end of the piston assembly (120), a threaded tube (140) fixed to one side of the cylinder body (110), a sleeve (150) installed on the threaded tube (140) by threaded connection, a screw rod (160) with one end connected to the piston assembly (120) and the other end extending into the inner cavity of the sleeve (150), a movable plate (170) movably sleeved on the screw rod (160), a nut (180) sleeved on the screw rod (160) and located on one side of the movable plate (170), and a spring (190) connecting the movable plate (170) and the outer side surface of the cylinder body (110); The inner cavity of the cylinder body (110) is symmetrically provided with two chambers (111), and the piston assembly (120) comprises two piston bodies (121) arranged in opposite chambers (111), a connecting rod (122) connecting the opposite piston bodies (121), and a support (123) having one end fixed to the piston body (121) and the other end extending out of the cylinder body (110).

2. A high-speed railway brake cylinder piston assembly according to claim 1, characterized in that: A U-shaped tube (112) is provided on the outer surface of the cylinder body (110), both ends of the U-shaped tube (112) are connected to the opposite chamber (111), and an oil injection tube (113) is installed on the U-shaped tube (112).

3. The high-speed railway brake cylinder piston assembly according to claim 1, characterized in that: A sealing ring (1211) is sleeved on the outer surface of the piston body (121).

4. The high-speed railway brake cylinder piston assembly according to claim 1, characterized in that: An internal thread is provided on the inner side surface of the sleeve (150), and the internal thread is meshed with the threaded tube (140).

5. The high-speed railway brake cylinder piston assembly according to claim 1, characterized in that: The screw rod (160) is meshed with the nut (180).

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