A test tool for automatic brake valve, separate brake valve air supply valve

Abstract

The utility model belongs to equipment detection technical field discloses a kind of for automatic brake valve, separate brake valve air supply valve test tooling, this kind of for automatic brake valve, separate brake valve air supply valve test tooling including valve sleeve, screw base, quick coupling, high-pressure rubber pipe and steel pipe, valve sleeve is used to provide installation positioning base for air supply valve, screw base is connected in valve sleeve, quick coupling is connected in screw base, high-pressure rubber pipe is connected in quick coupling, simulate the gas flow path and installation environment of air supply valve in actual work by the close cooperation of valve sleeve and steel pipe, can simulate actual working condition, by the connecting mode of quick coupling and high-pressure rubber pipe, shorten the connecting time of test tooling and air source, significantly improve the efficiency of detection work, can better meet the growing demand of railway locomotive overhaul.

Description

Technical Field

[0001] This utility model belongs to the field of equipment testing technology, and in particular relates to a testing fixture for automatic brake valves and air supply valves for individual brake valves. Background Technology

[0002] The JZ-7 type brake is a key component of the railway locomotive braking system and is widely used in the railway transportation field. Among them, the automatic brake valve and the individual brake valve are the core components of the entire brake system, and the performance of the air supply valve directly determines the reliability and safety of the braking system.

[0003] In the existing technology, the operation process of testing the air supply valve is cumbersome and requires a lot of manpower and time, resulting in a low overall labor efficiency. This makes it difficult to meet the growing demand for railway locomotive maintenance. At the same time, the existing maintenance equipment cannot accurately reproduce these situations, making it impossible to accurately judge the working status of the air supply valve in actual use when testing its performance. This can easily lead to misjudgments, which poses a potential threat to railway traffic safety.

[0004] In other words, the existing testing fixtures for the automatic brake valve and the air supply valve of the JZ-7 type brake system have problems such as low labor efficiency and inability to accurately simulate actual working conditions to accurately judge the working performance of the air supply valve. Utility Model Content

[0005] The purpose of this utility model is to provide a testing fixture for automatic brake valves and air supply valves of individual brake valves, so as to solve the problems of low labor efficiency and inability to accurately simulate actual working conditions to accurately judge the working performance of air supply valves in the existing JZ-7 type brake automatic brake valve and air supply valve testing fixture.

[0006] To achieve this objective, the present invention adopts the following technical solution: This utility model provides a testing fixture for automatic brake valves and individual brake valve air supply valves. This testing fixture includes: Valve sleeve, used to provide a mounting base for the gas supply valve; A screw base is connected to the valve sleeve; Quick connector, for connection to the screw base; A high-pressure hose, connected to the quick connector, is used to deliver air. A steel pipe is inserted into the valve sleeve to simulate the gas flow path when the gas supply valve is actually working.

[0007] As an optional technical solution for testing automatic brake valves and individual brake valve air supply valves, it also includes a snap-fit ​​structure, which comprises: A connecting post and a snap-fit ​​block, wherein the snap-fit ​​block is connected to the connecting post, and the connecting post is inserted into the quick connector; The elastic element is connected at both ends to the quick connector and the snap-fit ​​block, respectively.

[0008] As an optional technical solution for testing automatic brake valves and individual brake valve air supply valves, it also includes a moving component, which comprises: A pivot, connected to the connecting post, is used to provide a rotational support point for the handle; A handle, connected to the pivot, is used to move the connecting column.

[0009] As an optional technical solution for testing automatic brake valves and individual brake valve air supply valves, it also includes a sealing assembly, which comprises: A limiting ring, connected to the quick connector, is used to restrict the movement of the high-pressure hose; A sealing element, connected to the limiting ring, is used to prevent air leakage.

[0010] As an optional technical solution for testing automatic brake valves and individual brake valve air supply valves, the high-pressure hose has an installation groove on its outer wall, and one end of the snap-fit ​​block is inserted into the installation groove.

[0011] As an optional technical solution for testing fixtures for automatic brake valves and individual brake valve air supply valves, the quick connector is provided with a slide groove, and the connecting column, the elastic element and the snap-fit ​​block are inserted into the slide groove.

[0012] Beneficial effects:

[0013] This utility model provides a testing fixture for automatic brake valves and individual brake valve air supply valves. This testing fixture includes a valve sleeve, a screw base, a quick connector, a high-pressure hose, and a steel pipe. The valve sleeve provides a mounting base for the air supply valve. The screw base is connected to the valve sleeve and provides a connection for the quick connector. The quick connector is connected to the screw base and provides a connection for the high-pressure hose. The high-pressure hose is connected to the quick connector and used to deliver air. The steel pipe is inserted into the valve sleeve to simulate the gas flow path during actual operation of the air supply valve. The tight fit between the valve sleeve and the steel pipe simulates the gas flow path and installation environment of the air supply valve in actual operation, thus simulating actual working conditions. The connection method between the quick connector and the high-pressure hose shortens the connection time between the testing fixture and the air source, significantly improving the efficiency of the testing work and better meeting the growing needs of railway locomotive maintenance. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of a test fixture for automatic brake valves, individual brake valves, and air supply valves provided in this embodiment of the utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a test fixture for automatic brake valves, individual brake valves, and air supply valves provided in this embodiment of the utility model. Figure 2 ; Figure 3 This is a schematic diagram of the snap-fit ​​structure provided in this embodiment of the utility model. Figure 1 .

[0015] In the picture: 1. Valve sleeve; 2. Screw base; 3. Quick connector; 4. High-pressure hose; 5. Steel pipe; 6. Connecting post; 7. Snap-fit ​​block; 8. Elastic element; 9. Rotating shaft; 10. Handle; 11. Limit ring; 12. Seal. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0017] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0020] like Figures 1 to 3 As shown, this embodiment provides a test fixture for automatic brake valves and individual brake valve air supply valves. This test fixture for automatic brake valves and individual brake valve air supply valves includes a valve sleeve 1, a screw base 2, a quick connector 3, a high-pressure hose 4, and a steel pipe 5. The valve sleeve 1 is used to provide an installation and positioning base for the air supply valve. The screw base 2 is connected to the valve sleeve 1, the quick connector 3 is connected to the screw base 2, the high-pressure hose 4 is connected to the quick connector 3, and is used to deliver air source. The steel pipe 5 is inserted into the valve sleeve 1 to simulate the gas flow path when the air supply valve is actually working.

[0021] By tightly fitting the valve sleeve 1 with the steel pipe 5, the gas flow path and installation environment of the gas supply valve in actual operation are simulated, which can simulate actual working conditions. The connection method between the quick connector 3 and the high-pressure hose 4 shortens the connection time between the test fixture and the air source, significantly improves the efficiency of the test work, and can better meet the growing needs of railway locomotive maintenance.

[0022] First, weld the screw base 2 onto the valve sleeve 1. After welding, wait for it to cool down, ensuring that the screw base 2 is firmly connected to the valve sleeve 1. After cooling, install the quick connector 3 and connect the high-pressure hose 4 to the quick connector 3. Then, insert the steel pipe 5 into the hole of the valve sleeve 1 and grind it flat. Next, connect one end of the high-pressure hose 4 to the control switch of the JZ-7 air brake assembly line test bench. Install the air supply valve to be tested into the valve sleeve 1. Then, turn on the control switch of the JZ-7 air brake assembly line test bench to turn on the ventilation source. Then, press the top rod of the air supply valve. After hearing the "pop" sound of exhaust, put the valve sleeve 1 with the air supply valve into a water basin for a sealing performance test. Observe the top rod of the air supply valve. If no bubbles are generated, it means that the air supply valve has good sealing performance. If bubbles are generated, it means that there is a sealing problem with the air supply valve, which needs to be repaired or replaced.

[0023] Specifically, the outer diameter of the hose is 6 mm, and the outer diameter of the steel pipe 5 is available in two specifications, namely 19.8 mm or 21.8 mm; the screw base 2 is welded to the valve sleeve 1, the quick connector 3 is threaded to the screw base 2, the high-pressure hose 4 is snapped to the quick connector 3, and the steel pipe 5 is snapped into the valve sleeve 1.

[0024] See Figure 2 and Figure 3In this embodiment, a snap-fit ​​structure is also included, comprising a connecting post 6, a snap-fit ​​block 7, and an elastic element 8. The snap-fit ​​block 7 is connected to the connecting post 6, and the connecting post 6 is inserted into the quick connector 3. The elastic element 8 is connected at both ends to the quick connector 3 and the snap-fit ​​block 7, respectively. A moving component is also included, comprising a rotating shaft 9 and a handle 10. The rotating shaft 9 is connected to the connecting post 6 and is used to provide a rotational support point for the handle 10. The handle 10 is connected to the rotating shaft 9 and is used to move the connecting post 6. A sealing component is also included, comprising a limiting ring 11 and a sealing element 12. The limiting ring 11 is connected to the quick connector 3 and is used to restrict the movement of the high-pressure hose 4. The sealing element 12 is connected to the limiting ring 11 and is used to prevent air leakage. An installation groove is provided on the outer wall of the high-pressure hose 4, and one end of the snap-fit ​​block 7 is inserted into the installation groove. A sliding groove is provided on the quick connector 3, and the connecting post 6, the elastic element 8, and the snap-fit ​​block 7 are inserted into the sliding groove.

[0025] The snap-fit ​​block 7 is connected to the connecting post 6 via a snap-fit ​​structure. The connecting post 6 is inserted into the quick connector 3. The two ends of the elastic element 8 are connected to the quick connector 3 and the snap-fit ​​block 7, respectively. When installing the high-pressure hose 4, the snap-fit ​​block 7 can move under the action of the elastic element 8, quickly snapping into the mounting groove on the outer wall of the high-pressure hose 4, thus connecting the high-pressure hose 4 to the quick connector 3. Compared with the traditional connection method, this makes the connection between the quick connector 3 and the high-pressure hose 4 more secure and less prone to loosening.

[0026] First, move one end of the high-pressure hose 4 into the quick connector 3. During the movement, pull the handle 10 to move the connecting post 6. At this time, the elastic element 8 contracts, and the connecting post 6 moves the locking block 7 to prevent the locking block 7 from blocking the movement of the high-pressure hose 4. When one end of the high-pressure hose 4 contacts the seal 12, release the pull on the handle 10 and rotate the handle 10 so that the handle 10 rotates along the pivot 9 and fits against the connecting post 6, saving space. At this time, the elastic element 8 loses its compression and pushes the locking block 7 to move, so that the locking block 7 is inserted into the installation groove, thereby making the connection between the high-pressure hose 4 and the quick connector 3 stable.

[0027] Specifically, the snap-fit ​​block 7 is fixedly installed at one end of the connecting column 6, the rotating shaft 9 is fixedly installed at the other end of the connecting column 6, the handle 10 is movably sleeved at both ends on the outer surface of the rotating shaft 9, one end of the elastic element 8 is connected to the snap-fit ​​block 7, and the other end of the elastic element 8 is connected to the inner wall of the slide groove; the elastic element 8 can be an elastic element with elastic force such as a spring, and the sealing element 12 can be an element with sealing performance such as a sealing ring. When the high-pressure hose 4 is in contact with the sealing element 12, the mounting groove and the slide groove are connected.

[0028] In this embodiment, there are two sets of snap-fit ​​structures, located at both ends of the inner wall of the quick connector 3.

[0029] The following is a detailed description of the usage process of a testing fixture for automatic brake valves and individual brake valve air supply valves: First, weld the screw base 2 onto the valve sleeve 1. After welding, allow it to cool, ensuring the screw base 2 is securely connected to the valve sleeve 1. After cooling, install the quick connector 3. Then, move one end of the high-pressure hose 4 into the quick connector 3. During this movement, pull the handle 10 to move the connecting post 6. At this time, the elastic element 8 contracts, and the connecting post 6 moves the locking block 7, preventing the locking block 7 from obstructing the movement of the high-pressure hose 4. When one end of the high-pressure hose 4 is pressed against the seal 12, release the pull on the handle 10 and rotate the handle 10 so that it rotates along the pivot 9 and fits against the connecting post 6, saving space. At this time, the elastic element 8 is released from compression, pushing the locking block 7 to move, allowing the locking block 7 to insert into the mounting groove, thus allowing the high-pressure hose 4 to connect with the quick connector 3. The connection between connectors 3 is stable. Seal 12 prevents air leakage at the connection point between quick connector 3 and high-pressure hose 4 during air source transmission. Then, steel pipe 5 is installed in the hole of valve sleeve 1 and ground flat. Next, one end of high-pressure hose 4 is connected to the control switch of the JZ-7 air brake assembly line test bench. The air supply valve to be tested is installed in valve sleeve 1. Then, the control switch of the JZ-7 air brake assembly line test bench is turned on to turn on the air source. Then, the top rod of the air supply valve is pressed. After hearing the "pop" sound of exhaust, the valve sleeve 1 with the air supply valve is placed in a water basin for sealing performance test. Observe the top rod of the air supply valve. If no bubbles are generated, it means that the air supply valve has good sealing performance. If bubbles are generated, it means that there is a sealing problem with the air supply valve, which needs to be repaired or replaced. It should be noted that in actual use, the snap-fit ​​block 7 can be rectangular; in this application, it is set as... Figure 3 The inclined shape is only for easy disassembly. In case of emergency, the high-pressure hose 4 can be pulled directly. The movement of the high-pressure hose 4 will push the inclined surface at the locking block 7 to move, thereby allowing the high-pressure hose 4 to disengage quickly. The external force that can move the high-pressure hose 4 is greater than the thrust of the gas generated by the JZ-7 air brake assembly line test bench during operation on the quick connector 3. The above quick disassembly operation is only used in emergency situations. During normal disassembly, the handle 10 is pulled to avoid wear between the locking block 7 and the high-pressure hose 4.

[0030] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A testing fixture for automatic brake valves and individual brake valve air supply valves, characterized in that, include: Valve sleeve (1) is used to provide a mounting base for the gas supply valve; Screw base (2) is connected to the valve sleeve (1); Quick connector (3) is connected to the screw base (2); A high-pressure hose (4) is connected to the quick connector (3) for conveying air. A steel pipe (5) is inserted into the valve sleeve (1) to simulate the gas flow path when the gas supply valve is actually working.

2. The testing fixture for automatic brake valves and individual brake valve air supply valves according to claim 1, characterized in that, It also includes a snap-fit ​​structure, the snap-fit ​​structure comprising: A connecting post (6) and a snap-fit ​​block (7), wherein the snap-fit ​​block (7) is connected to the connecting post (6), and the connecting post (6) is inserted into the quick connector (3); The elastic element (8) is connected at both ends to the quick connector (3) and the snap-fit ​​block (7).

3. The testing fixture for automatic brake valves and individual brake valve air supply valves according to claim 2, characterized in that, It also includes a moving component, which includes: A pivot (9) is connected to the connecting post (6) and is used to provide a rotational support point for the handle (10); A handle (10) is connected to the pivot (9) for moving the connecting column (6).

4. The testing fixture for automatic brake valves and individual brake valve air supply valves according to claim 2, characterized in that, It also includes a sealing assembly, the sealing assembly comprising: A limiting ring (11) is connected to the quick connector (3) to restrict the movement of the high-pressure hose (4); A seal (12) is connected to the limiting ring (11) to prevent air leakage.

5. A testing fixture for automatic brake valves and individual brake valve air supply valves according to claim 2, characterized in that, The high-pressure hose (4) has an installation groove on its outer wall, and one end of the snap-fit ​​block (7) is inserted into the installation groove.

6. The testing fixture for automatic brake valves and individual brake valve air supply valves according to claim 2, characterized in that, The quick connector (3) is provided with a sliding groove, and the connecting post (6), the elastic element (8) and the snap-fit ​​block (7) are inserted into the sliding groove.

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