Train brake cylinder airtightness comprehensive detection experiment table

Abstract

The utility model discloses a train brake cylinder airtightness comprehensive detection experiment table, which belongs to the technical field of train brake cylinder detection, and comprises a box body, the top of the box body is fixedly connected with a detection table, the detection table is internally provided with a limiting groove, and the interior of the detection table is fixedly connected with two fixing plates. According to the train brake cylinder airtightness comprehensive detection experiment table, the internal thread sleeve, the air outlet pipe, the limiting plates, the springs, the limiting grooves and the limiting grooves are arranged, the two limiting plates are far away from each other and compress the springs, when the limiting grooves move to the limiting plates, the limiting plates lose the supporting effect of the mounting base, and the springs reset and push the limiting plates to move; according to the test bed, the limiting plate is clamped in the limiting groove, meanwhile, the mounting seat is clamped in the limiting groove, mounting of the mounting seat can be completed, the die replacement work is completed, the air outlet pipe and the die can be conveniently detached and replaced, air tightness detection can be conveniently conducted on train brake cylinders of different specifications, and the application range of the test bed is expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of train brake cylinder detection, in particular to a comprehensive detection test bench for air tightness of a train brake cylinder. Background Art

[0002] The train brake cylinder is a key component of the railway vehicle braking system. Its function is to convert the pressure of compressed air into mechanical thrust, thereby pushing the brake shoes into contact with the wheels, generating braking force to slow down or stop the train. Before leaving the factory, the train brake cylinder needs to be placed on a comprehensive air tightness testing bench for testing to prevent unqualified products from flowing out.

[0003] When the existing air tightness comprehensive testing test bench is used to test the air tightness of a train brake cylinder, the train brake cylinder is generally placed in a mold for limiting the position, and then the air outlet pipe of the testing instrument is placed into the air inlet of the train brake cylinder by an electric push rod to test it. Finally, the test result is obtained by observing the display screen of the testing instrument. However, the mold on the existing air tightness comprehensive testing test bench and the air outlet pipe on the testing instrument are integrated, which is difficult to disassemble and replace, making it difficult to perform air tightness testing on train brake cylinders of different specifications. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the utility model provides a comprehensive test bench for air tightness testing of train brake cylinders, which solves the problem that the mold on the existing comprehensive test bench for air tightness testing and the air outlet pipe on the testing instrument are integrated and difficult to disassemble and replace, resulting in difficulty in performing air tightness testing on train brake cylinders of different specifications, limiting its scope of use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a comprehensive test bench for testing air tightness of a train brake cylinder, comprising a box body, a test bench fixedly connected to the top of the box body, a limiting groove provided in the test bench, two fixed plates fixedly connected to the inside of the test bench, two connecting rods slidably connected to the fixed plates, one end of the two connecting rods fixedly connected to the limiting plates, the other ends of the two connecting rods fixedly connected to the movable plates, springs sleeved on the connecting rods, a mounting seat provided inside the test bench, two limiting grooves provided on the mounting seat, a mold fixedly connected to the top of the mounting seat, and an L-shaped plate fixedly connected to the top of the test bench;

[0006] An air tightness detector is fixedly connected to the top of the L-shaped plate, a connecting pipe is provided at the bottom of the air tightness detector, a connecting piece is provided at one end of the connecting pipe, an internally threaded sleeve is threadedly connected to the bottom of the connecting piece, an air outlet pipe is fixedly connected to the bottom of the internally threaded sleeve, the air tightness detector, the connecting pipe, the connecting piece, the internally threaded sleeve and the air outlet pipe are connected, a first electric push rod is fixedly connected to the L-shaped plate, the output end of the first electric push rod is fixedly connected to the top of the connecting piece, and a second electric push rod is fixedly connected to the inside of the box body.

[0007] As a further solution of the present invention: the limit plate is designed as an inclined surface, and the output end of the second electric push rod overlaps the bottom of the mounting seat.

[0008] As a further solution of the present invention: one end of the spring is fixedly connected to the limit plate, and the other end of the spring is fixedly connected to the movable plate.

[0009] As a further solution of the present invention: two handles are fixedly connected to the box body, and the handles are designed as curved surfaces.

[0010] As a further solution of the present invention: four self-locking universal wheels are provided at the bottom of the box body, and the four self-locking universal wheels are respectively located at the four corners of the bottom of the box body.

[0011] As a further solution of the present invention: a handle is fixedly connected to the top of the movable plate, and the handle is designed as a curved surface.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The train brake cylinder air tightness comprehensive testing test bench is equipped with an internal threaded sleeve, an air outlet pipe, a limit plate, a spring, a limit groove and a limit slot. When it is necessary to replace the air outlet pipe with a different diameter, the internal threaded sleeve is unscrewed, so that the whole formed by the internal threaded sleeve and the air outlet pipe is replaced, thereby completing the replacement of the air outlet pipe with different diameters. When it is necessary to disassemble the mold, first pull the two handles to drive the connecting rod and the limit plate to move, so that the two limit plates move away from each other, so that the limit plate is out of the limit slot, and start the second electric push rod to drive the mounting seat to move upward, at this time the mounting seat and the mold can be integrally connected. The body is disassembled, and when installing the mounting seat, the mounting seat is placed inside the test bench, so that the mounting seat pushes the two limit plates apart, and the two limit plates move away from each other and compress the spring. When the limit groove moves to the limit plate, the limit plate loses the support effect of the mounting seat, so that the spring resets and pushes the limit plate to move, so that the limit plate is stuck in the limit groove, and the mounting seat is stuck in the limit groove. The installation of the mounting seat can be completed, thereby completing the replacement of the mold. The test bench is convenient for disassembly and replacement of the air outlet pipe and the mold, so that it is convenient to perform air tightness testing on train brake cylinders of different specifications, thereby expanding its scope of use.

[0014] The train brake cylinder air tightness comprehensive testing test bench is provided with self-locking universal wheels, a box body and a handle. When the test bench needs to be moved, the handle is held to push the box body to make the self-locking universal wheels roll on the ground. The self-locking universal wheels convert the sliding friction between the box body and the ground into rolling friction, thereby reducing friction and facilitating the transfer of the test bench. When transferred to a designated position, the self-locking universal wheels are locked to fix the box body, thereby improving the stability of the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the cross-section of the box body and the testing platform of the utility model;

[0017] Figure 3 This is a structural diagram of the utility model in which the testing platform and the mounting base are separated;

[0018] Figure 4 This is a perspective structural diagram of the testing platform of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the utility model in which the connecting piece and the internal threaded sleeve are separated;

[0020] In the figure: 1. Box body; 2. Testing table; 3. Handle; 4. Self-locking universal wheel; 5. L-shaped plate; 6. Mounting seat; 7. Air tightness tester; 8. Connecting pipe; 9. Connecting piece; 10. Internally threaded sleeve; 11. First electric push rod; 12. Second electric push rod; 13. Mold; 14. Limiting groove; 15. Limiting plate; 16. Moving plate; 17. Fixed plate; 18. Connecting rod; 19. Limiting groove; 20. Spring; 21. Handle; 22. Exhaust pipe. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] like Figure 1-5As shown, the utility model provides a technical solution: a comprehensive test bench for testing the air tightness of a train brake cylinder, comprising a box body 1, a test bench 2 fixedly connected to the top of the box body 1, a limiting groove 19 being provided in the test bench 2, and because the limiting groove 19 is provided, when the mounting seat 6 is located inside the limiting groove 19, the limiting groove 19 limits the mounting seat 6 in four directions of front, back, left and right, and at the same time, the limiting plate 15 and the test bench 2 limit the mounting seat 6 in the up and down directions, thereby improving the stability of the installation of the mounting seat 6, and two fixing plates 17 are fixedly connected inside the test bench 2, and two connecting rods 18 are slidably connected to the fixing plate 17, and one end of the two connecting rods 18 is fixedly connected to the limiting plate 15, and the limiting plate 15 is designed with an inclined surface. Because the limiting plate 15 is designed with an inclined surface, it is convenient for the mounting seat 6 to push the limiting plate 15, thereby facilitating the smooth progress of subsequent operations, and the output end of the second electric push rod 12 overlaps the bottom of the mounting seat 6.

[0023] The other ends of the two connecting rods 18 are fixedly connected to the movable plate 16, and a spring 20 is sleeved on the connecting rod 18. One end of the spring 20 is fixedly connected to the limit plate 15, and the other end of the spring 20 is fixedly connected to the movable plate 16. A mounting seat 6 is provided inside the testing platform 2, and two limit grooves 14 are provided on the mounting seat 6. The top of the mounting seat 6 is fixedly connected to the mold 13, and the top of the testing platform 2 is fixedly connected to the L-shaped plate 5. The top of the L-shaped plate 5 is fixedly connected to the air tightness tester 7, and a connecting pipe 8 is provided at the bottom of the air tightness tester 7.

[0024] A connecting piece 9 is provided at one end of the connecting pipe 8, and an internal threaded sleeve 10 is threadedly connected to the bottom of the connecting piece 9. An air outlet pipe 22 is fixedly connected to the bottom of the internal threaded sleeve 10. The air tightness detector 7, the connecting pipe 8, the connecting piece 9, the internal threaded sleeve 10 are connected to the air outlet pipe 22. A first electric push rod 11 is fixedly connected to the L-shaped plate 5, and a handle 21 is fixedly connected to the top of the movable plate 16, and the handle 21 is designed as a curved surface.

[0025] The output end of the first electric push rod 11 is fixedly connected to the top of the connecting member 9, and the second electric push rod 12 is fixedly connected to the inside of the box body 1. Because the second electric push rod 12 is provided, the mounting base 6 is pushed upward for a distance by the second electric push rod 12, which further improves the convenience of disassembling the mounting base 6. Two handles 3 are fixedly connected to the box body 1. Because the handle 3 is provided, the handle 3 provides a holding point, which is convenient for people to hold the handle 3 to push the box body 1, thereby improving the convenience of operation. The handle 3 is designed as an arc surface, and four self-locking universal wheels 4 are provided at the bottom of the box body 1. The four self-locking universal wheels 4 are respectively located at the four corners of the bottom of the box body 1.

[0026] The working principle of this utility model is:

[0027] When it is necessary to perform an air tightness test on the train brake cylinder, the train brake cylinder is first placed inside the mold 13 and limited so that the air outlet pipe 22 is aligned with the air inlet of the train brake cylinder. At this time, the first electric push rod 11 is started to drive the connecting piece 9, the internal threaded sleeve 10 and the air outlet pipe 22 to move downward, so that the air outlet pipe 22 is inserted into the air inlet of the train brake cylinder. At this time, the air tightness tester 7 is started to perform an air tightness test on the train brake cylinder, and the test result can be obtained by observing the display screen on the air tightness tester 7;

[0028] When it is necessary to replace the outlet pipe 22 of a different diameter, the internal threaded sleeve 10 is unscrewed, so that the integral body formed by the internal threaded sleeve 10 and the outlet pipe 22 is replaced, thereby completing the replacement of the outlet pipe 22 of different diameters. When it is necessary to disassemble the mold 13, first pull the two handles 21 to drive the connecting rod 18 and the limit plate 15 to move, so that the two limit plates 15 move away from each other, so that the limit plate 15 is out of the limit groove 14, and start the second electric push rod 12 to drive the mounting seat 6 to move upward, at this time the mounting seat 6 can be formed with the mold 13. The whole is disassembled, and when installing the mounting seat 6, the mounting seat 6 is placed inside the testing table 2, so that the mounting seat 6 pushes the two limit plates 15 apart, and the two limit plates 15 move away from each other and compress the spring 20. When the limit groove 14 moves to the limit plate 15, the limit plate 15 loses the supporting effect of the mounting seat 6, so that the spring 20 resets and pushes the limit plate 15 to move, so that the limit plate 15 is stuck in the limit groove 14, and the mounting seat 6 is stuck in the limit groove 19 at the same time, the installation of the mounting seat 6 is completed, and the replacement of the mold 13 is completed.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A comprehensive test bench for testing air tightness of a train brake cylinder, comprising a box body (1), characterized in that: The top of the box body (1) is fixedly connected to a test platform (2), a limiting groove (19) is provided in the test platform (2), two fixed plates (17) are fixedly connected inside the test platform (2), two connecting rods (18) are slidably connected to the fixed plate (17), one end of the two connecting rods (18) is fixedly connected to the limiting plate (15), and the other end of the two connecting rods (18) is fixedly connected to the moving plate (16), a spring (20) is sleeved on the connecting rod (18), a mounting seat (6) is provided inside the test platform (2), two limiting grooves (14) are provided on the mounting seat (6), a mold (13) is fixedly connected to the top of the mounting seat (6), and an L-shaped plate (5) is fixedly connected to the top of the test platform (2); The top of the L-shaped plate (5) is fixedly connected to an air tightness detector (7), the bottom of the air tightness detector (7) is provided with a connecting pipe (8), one end of the connecting pipe (8) is provided with a connecting piece (9), the bottom of the connecting piece (9) is threadedly connected to an internal threaded sleeve (10), the bottom of the internal threaded sleeve (10) is fixedly connected to an air outlet pipe (22), the air tightness detector (7), the connecting pipe (8), the connecting piece (9), the internal threaded sleeve (10) and the air outlet pipe (22) are connected, the L-shaped plate (5) is fixedly connected to a first electric push rod (11), the output end of the first electric push rod (11) is fixedly connected to the top of the connecting piece (9), and the inside of the box body (1) is fixedly connected to a second electric push rod (12).

2. The comprehensive test bench for air tightness of train brake cylinders according to claim 1 is characterized by: The limiting plate (15) is designed as an inclined surface, and the output end of the second electric push rod (12) overlaps the bottom of the mounting seat (6).

3. The comprehensive test bench for air tightness of train brake cylinders according to claim 1 is characterized by: One end of the spring (20) is fixedly connected to the limiting plate (15), and the other end of the spring (20) is fixedly connected to the moving plate (16).

4. The train brake cylinder air tightness comprehensive testing test bench according to claim 1 is characterized by: Two handles (3) are fixedly connected to the box body (1), and the handles (3) are designed as curved surfaces.

5. The comprehensive test bench for air tightness of train brake cylinders according to claim 1 is characterized by: Four self-locking universal wheels (4) are provided at the bottom of the box body (1), and the four self-locking universal wheels (4) are respectively located at the four corners of the bottom of the box body (1).

6. The train brake cylinder air tightness comprehensive testing test bench according to claim 1 is characterized by: A handle (21) is fixedly connected to the top of the movable plate (16), and the handle (21) is designed as a curved surface.

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