CN219467748U

CN219467748U - Tread braking device with filtering function

Info

Publication number: CN219467748U
Application number: CN202320379236.5U
Authority: CN
Inventors: 韩亮; 陆爰; 张晓艳
Original assignee: Knorr Bremse Systems for Rail Vehicles Suzhou Co Ltd
Current assignee: Knorr Bremse Systems for Rail Vehicles Suzhou Co Ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-08-04
Anticipated expiration: 2033-03-03

Abstract

The utility model discloses a tread braking device with a filtering function, which comprises a braking cylinder, a brake shoe transmission mechanism arranged on the braking cylinder, a brake shoe assembly connected with the brake shoe transmission mechanism, a main shaft assembly arranged in the braking cylinder and an adjusting mechanism for adjusting the position of the brake shoe assembly, wherein a filtering assembly is arranged at a breathing port of the braking cylinder and comprises a connecting seat arranged on the braking cylinder and a filtering element, and the filtering element is used for filtering foreign matters entering the braking cylinder. The tread braking device provided by the utility model can prevent foreign matters from blocking the breathing port or entering the brake cylinder, and ensure the normal operation of the tread braking device.

Description

Tread braking device with filtering function

Technical Field

The utility model relates to the technical field of braking devices, in particular to a tread braking device with a filtering function.

Background

The tread brake device is a foundation brake device of a rail transit vehicle, and application and release of the tread brake device brake is generally achieved by compressed air, and the brake is applied when the compressed air is filled and released when the compressed air is discharged. The existing tread braking device comprises a braking cylinder, a brake shoe transmission mechanism arranged on the braking cylinder, a brake shoe assembly connected with the brake shoe transmission mechanism, a main shaft assembly arranged in the braking cylinder and an adjusting mechanism for adjusting the position of the brake shoe assembly, wherein a piston in the braking cylinder drives the main shaft through a cam under the pushing of compressed gas to push the brake shoe assembly to advance, so that a brake shoe holds a wheel tread tightly, and friction force is generated, thereby realizing braking.

When the tread braking device is used in desert, once sand in the environment enters the tread braking device through the breathing port or blocks the breathing port, the action failure of the tread braking device can be caused.

The present utility model has been made in order to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a tread braking device with a filtering function, which can prevent sand, dust and other foreign matters from entering a braking cylinder and ensure the normal operation of the tread braking device.

Based on the problems, the technical scheme provided by the utility model is as follows:

the tread braking device with the filtering function comprises a braking cylinder, a brake shoe transmission mechanism arranged on the braking cylinder, a brake shoe assembly connected with the brake shoe transmission mechanism, a main shaft assembly arranged in the braking cylinder and an adjusting mechanism for adjusting the position of the brake shoe assembly,

the breathing port of brake cylinder is equipped with filter unit, filter unit is including installing connecting seat and the filter element on the brake cylinder, filter element is used for filtering the entering the foreign matter in the brake cylinder gas.

In one embodiment, the connecting seat is provided with a circulation port communicated with the breathing port, and the filter element is arranged in the circulation port.

In one embodiment, the filter assembly further comprises a filter joint detachably connected with the connecting seat, and a plurality of air flow holes communicated with the circulation port are formed in the filter joint.

In one embodiment, the filter joint is internally provided with a mounting step matched with the filter element, and the circulation port is internally provided with a limiting step matched with the filter element.

In one embodiment, a stop is provided between the limit step and the filter element.

In one embodiment, the stopper is provided with a plurality of filtering through holes.

In one embodiment, the filter joint is threadably coupled to the connection block.

In one embodiment, the plurality of air flow holes are circumferentially spaced along the filter joint, and the lower end of the filter joint is provided with a dismounting groove.

In one embodiment, the connecting seat is fixed on the brake cylinder through a bolt assembly, and a positioning hole for the bolt assembly to pass through is formed in the connecting seat.

In one embodiment, a spacer is provided between the bolt assembly and the connection block.

Compared with the prior art, the utility model has the advantages that:

1. when external air enters the brake cylinder, foreign matters such as sand and dust in the air are filtered, so that the action failure of the brake device caused by the blockage of the breathing port by the sand and dust or the entry into the brake cylinder can be avoided, the normal operation of the tread brake device is ensured, and the tread brake device has an excellent filtering function and is particularly suitable for desert environments;

2. the filtering component has the advantages of simple structure, convenient installation and low cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a tread brake device with filtering according to the present utility model;

FIG. 2 is a schematic illustration showing the filter assembly in an exploded view according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a filter assembly according to an embodiment of the present utility model;

wherein:

1. a brake cylinder;

2. a brake shoe transmission mechanism;

3. a brake shoe assembly;

4. a filter assembly; 4-1, connecting seats; 4-1a, a flow port; 4-1b, limiting steps; 4-1c, positioning holes; 4-2, a filter element; 4-3, a filter joint; 4-3a, mounting steps; 4-3b, airflow holes; 4-3c, dismounting grooves; 4-4, a stop; 4-5, bolts; 4-6, a gasket.

Detailed Description

The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments.

Referring to fig. 1, for a schematic structural view of an embodiment of the present utility model, there is provided a tread brake device with a filtering function, which includes a brake cylinder 1, a shoe transmission mechanism 2 mounted on the brake cylinder 1, a shoe assembly 3 connected to the shoe transmission mechanism 2, and a spindle assembly (not shown) and an adjusting mechanism (not shown) for adjusting the position of the shoe assembly, which are disposed in the brake cylinder 1.

During braking, compressed air enters the brake cylinder 1 through the air inlet, a piston in the brake cylinder 1 drives the main shaft through a cam under the pushing of the compressed air to push the brake shoe assembly 3 to advance, so that the brake shoe holds the tread of the wheel tightly, friction force is generated, and braking is achieved.

When the brake is released, external air enters the brake cylinder 1 through the breathing port, and the brake shoe assembly 3 returns to the initial position under the reset action of the brake shoe transmission mechanism 2 and the regulating mechanism.

In order to prevent foreign matters such as sand and dust in the external air from blocking the breathing port or entering the brake cylinder 1 to influence the normal operation of the tread brake device, the breathing port is provided with a filtering assembly 4, when the external air enters the brake cylinder 1 through the breathing port, the foreign matters such as sand and dust are filtered by the filtering assembly 4, and when the air in the brake cylinder 1 is discharged through the breathing port, the foreign matters such as sand and dust filtered by the filtering assembly 4 are blown down, so that the normal operation of the tread brake device is ensured.

As shown in fig. 2 and 3, the filter assembly 4 includes a connection seat 4-1 mounted on the brake cylinder 1, and a filter element 4-2, a communication port 4-1a communicating with the breathing port is provided on the connection seat 4-1, and the filter element 4-2 covers the communication port 4-1a to filter gas entering the brake cylinder 1 through the communication port 4-1 a. The filter element 4-2 is a filter element for filtering sand and dust, and for example, a copper mesh with a pore size of about 0.1mm can be used.

The connecting seat 4-1 is fixed on the brake cylinder 1 through a bolt assembly, in this example, the bolt assembly comprises two bolts 4-5 arranged in parallel, and a positioning hole 4-1c for the bolts to extend into is arranged on the connecting seat 4-1.

In order to improve the stability of the installation of the connection seat 4-1, a gasket 4-6 is provided between the bolt 4-5 and the connection seat 4-1.

To facilitate the installation of the filter element 4-2, the filter assembly 4 further comprises a filter adapter 4-3, which filter adapter 4-3 is detachably connected to the connection seat 4-1, while a plurality of air flow holes 4-3b communicating to the flow port 4-1a are provided in the filter adapter 4-3.

In this example, the filter joint 4-3 is cup-shaped and is screwed with the connection seat 4-1. Specifically, an internal thread is provided at the flow port 4-1a of the connection base 4-1, an external thread is provided on the filter joint 4-3, and the connection between the filter joint 4-3 and the connection base 4-1 is realized by the cooperation of the external thread and the internal thread. Wherein, a plurality of air flow holes 4-3b are circumferentially arranged at intervals along the filter joint 4-3, a disassembly and assembly groove 4-3c is arranged at the lower end of the filter joint 4-3, the air exchange between the tread braking device and the external environment is realized through a plurality of air flow holes 4-3b, when the filter element 4-2 needs to be replaced, a rotary tool is arranged in the disassembly and assembly groove 4-3c, the filter joint 4-3 is rotated to be separated from the connecting seat 4-1, the filter element 4-2 can be disassembled for replacement, and after the replacement of the filter element 4-2 is completed, the filter joint 4-3 is screwed for completion of installation.

In order to facilitate the installation of the filter element 4-2, an installation step 4-3a matching the filter element 4-2 is provided in the filter joint 4-3, a limit step 4-1b matching the filter element 4-2 is provided in the flow port 4-1a, and the filter element 4-2 is placed between the installation step 4-3a and the limit step 4-1 b.

In order to improve the stability of the installation of the filter element 4-2, a stop piece 4-4 is arranged between the limiting step 4-1b and the filter element 4-2, and a plurality of filtering through holes are arranged on the stop piece 4-4, preferably, the stop piece 4-4 can adopt a filter screen.

The working principle of the utility model is as follows:

during braking, compressed air enters the brake cylinder 1 through the air inlet, at the moment, the air in the brake cylinder 1 is exhausted through the breathing port, dust and sand filtered on the filter element 4-2 are blown off, the piston in the brake cylinder 1 drives the main shaft through the cam under the pushing of the compressed air, and the brake shoe assembly 3 is pushed to advance, so that the brake shoe holds the wheel tread tightly, friction force is generated, and braking is achieved.

When the brake is released, external air enters the brake cylinder 1 through the air flow holes 4-3b on the filter joint 4-3, sand and dust and other foreign matters in the air are filtered by the filter element 4-2, and the brake shoe assembly 3 returns to the initial position under the reset action of the brake shoe transmission mechanism 2 and the regulating mechanism.

In conclusion, the tread braking device can filter foreign matters such as sand and dust in the external air, prevent the breathing port from being blocked or the foreign matters from entering the brake cylinder, and ensure the normal work of the tread braking device.

The above examples are provided for illustrating the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the contents of the present utility model and to implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The tread braking device with the filtering function comprises a braking cylinder, a brake shoe transmission mechanism arranged on the braking cylinder, a brake shoe assembly connected with the brake shoe transmission mechanism, a main shaft assembly arranged in the braking cylinder and an adjusting mechanism used for adjusting the position of the brake shoe assembly, and is characterized in that:

2. The tread braking device with filtering function according to claim 1, characterized in that: the connecting seat is provided with a circulation port communicated with the breathing port, and the filter element is arranged in the circulation port.

3. The tread braking device with filtering function according to claim 2, characterized in that: the filter assembly further comprises a filter joint which is detachably connected with the connecting seat, and a plurality of air flow holes communicated to the circulation ports are formed in the filter joint.

4. The tread braking device with filtering function according to claim 3, characterized in that: the filter joint is internally provided with an installation step matched with the filter element, and the circulation port is internally provided with a limit step matched with the filter element.

5. The tread braking device with filtering function according to claim 4, characterized in that: a stop piece is arranged between the limiting step and the filter element.

6. The tread braking device with filtering function according to claim 5, characterized in that: the stop piece is provided with a plurality of filtering through holes.

7. The tread braking device with filtering function according to claim 3, characterized in that: the filter joint is in threaded connection with the connecting seat.

8. The tread braking device with filtering function according to claim 3, characterized in that: the plurality of air flow holes are circumferentially arranged at intervals along the filter joint, and the lower end of the filter joint is provided with a disassembly and assembly groove.

9. The tread braking device with filtering function according to claim 1, characterized in that: the connecting seat is fixed on the brake cylinder through a bolt component, and a positioning hole for the bolt component to pass through is formed in the connecting seat.

10. The tread braking device with filtering function according to claim 9, characterized in that: and a gasket is arranged between the bolt assembly and the connecting seat.