Fatigue test device for altitude valve

Abstract

The invention relates to the field of altitude valve testing, in particular to a fatigue test device for an altitude valve, and aims to solve the problem that an altitude valve fatigue test device in the prior art is single in force application direction, and provides the following scheme that the fatigue test device comprises a test base which comprises a mounting frame and a mounting plate connected to the inner side of the mounting frame in a sliding mode, a mounting rack for mounting a height valve is fixed at the top of the mounting frame; and the force application mechanism comprises a rotary table rotationally connected to the top face of the mounting plate, an air cylinder fixed to the top face of the rotary table, a top plate fixed to the output end of the air cylinder and two mounting rings mounted on the top face of the top plate, and locking assemblies used for being connected with altitude valve levers are hinged to the two mounting rings correspondingly. According to the invention, forces in multiple directions can be applied to the altitude valve in the testing process, the accuracy of the testing effect is improved, the altitude valve can be conveniently and rapidly disassembled, assembled and connected, and the operation difficulty of testers is greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of altitude valve testing, and in particular to a fatigue testing device for altitude valves. Background Art

[0002] When a railway vehicle is moving or passengers are getting on or off, changes in its load will cause changes in the height of the vehicle body relative to the track surface. In order to keep the vehicle body at a certain height, when the vehicle body load changes, the height of the vehicle body will be adjusted by filling or exhausting air to the air spring through the height valve. Therefore, the quality of the height valve is crucial.

[0003] At present, the testing device used in the process of testing the fatigue resistance of the height valve can only apply force in a single direction to the height valve. Under natural conditions, the height valve may be subjected to forces from different directions. Therefore, when testing its fatigue resistance, applying force in a single direction cannot accurately measure its fatigue resistance, resulting in inaccurate test data. For this reason, this scheme proposes a fatigue test device for height valves. Summary of the invention

[0004] The present invention provides a fatigue testing device for a height valve, which solves the problem of a single force application direction in the fatigue testing device for a height valve in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fatigue test device for a height valve, comprising:

[0007] The test base comprises a mounting frame and a mounting plate slidably connected to the inner side of the mounting frame, and a mounting frame for mounting a height valve is fixed on the top of the mounting frame;

[0008] A force-applying mechanism, comprising a turntable rotatably connected to the top surface of the mounting plate, a cylinder fixed to the top surface of the turntable, a top plate fixed to the output end of the cylinder, and two mounting rings mounted on the top surface of the top plate, both mounting rings being hinged with a locking assembly for connecting a height valve lever;

[0009] The steering assembly includes a linkage shaft rotatably connected to the mounting plate, a fixed ring rotatably sleeved on the outer periphery of the cylinder output end, and a linkage rack fixed on the outer periphery of the fixed ring, one end of the linkage shaft is transmission-connected to the turntable, and the other end of the linkage shaft is fixed with a linkage gear meshing with the linkage rack;

[0010] A travel mechanism, which is mounted on the bottom surface of the mounting plate and is used to drive the mounting plate to move along the length direction of the mounting frame when the linkage shaft rotates;

[0011] A counting mechanism, which includes a fixed plate fixed on the top surface of the mounting plate and a counter mounted on the fixed plate, and the counter faces the output end of the cylinder.

[0012] Through the above technical solution, not only can forces in multiple directions be applied to the height valve during the test to improve the accuracy of the test effect, but also the height valve can be disassembled, assembled and connected conveniently and quickly, greatly reducing the operation difficulty of the test personnel.

[0013] As a further improvement of the above solution, the mounting frame is a rectangular frame, and the bottom surface and one side of the mounting frame are sealed by sealing plates. Slide grooves are provided on the inner walls of the two long sides of the mounting frame along their length directions. Both ends of the mounting plate are fixed with sliders, and one ends of the two sliders extend into the two slide grooves respectively and are slidably connected therewith.

[0014] As a further improvement of the above solution, a transmission groove is provided on one side of the mounting plate. A rotating shaft is rotatably connected to the top of the transmission groove, and the top of the rotating shaft is fixedly connected to the center of the bottom surface of the turntable. A driven bevel gear one is sleeved on the outer periphery of the rotating shaft, and one end of the linkage shaft extends into the transmission groove and is fixed with a driving bevel gear one meshing with the driven bevel gear one.

[0015] Through the above technical solution, the rotation of the linkage shaft drives the rotation of the rotating shaft, and thus the turntable can be driven to rotate.

[0016] As a further improvement of the above solution, the bottom of the rotating shaft extends below the mounting plate and is fixed with a driving bevel gear two. The traveling mechanism includes a transmission shaft provided directly below the mounting plate, two mounting blocks rotatably sleeved on the outer periphery of the transmission shaft, and a transmission member mounted on the mounting frame for driving the mounting plate to move when the transmission shaft rotates. Both mounting blocks are fixedly connected to the bottom surface of the mounting plate, and a driven bevel gear two meshing with the driving bevel gear two is sleeved on the outer periphery of the transmission shaft.

[0017] Through the above technical solution, the rotation of the rotating shaft drives the rotation of the transmission shaft, and thus the mounting plate can be driven to move when the cylinder expands and contracts.

[0018] As a further improvement of the above solution, mounting grooves are provided on the inner walls of the two long sides of the mounting frame along their length directions. The transmission member includes two fixed racks respectively fixed on the bottom surface of the mounting grooves and transmission gears fixed at both ends of the transmission shaft. The fixed racks are arranged along the length direction of the mounting grooves, and the two transmission gears are respectively located in the two mounting grooves and mesh with the fixed racks.

[0019] As a further improvement of the above solution, the locking assembly includes a telescopic rod hinged to the mounting ring and a connecting member mounted on the telescopic rod. The telescopic rod includes a movable rod and a fixed sleeve movably sleeved on the outer periphery of one end of the movable rod. One end of the fixed sleeve is hinged to the mounting ring. The connecting member is fixedly connected to one end of the movable rod. A positioning bolt is threadedly connected to the outer periphery of the fixed sleeve, and one end of the positioning bolt abuts against the outer periphery of the movable rod.

[0020] Through the above technical solution, it is convenient to adjust the length of the telescopic rod, so as to facilitate the connection between the connecting member and the lever part of the height valve.

[0021] As a further improvement of the above solution, the connecting member includes a connecting plate fixedly connected to one end of the movable rod, a U-shaped frame fixed to one end of the connecting plate, and a fixing bolt threadedly connected to the outer wall of one side of the U-shaped frame. One end of the fixing bolt extends to the inside of the U-shaped frame, and a bolt hole matching the fixing bolt is provided on the outer wall of the other side of the U-shaped frame.

[0022] As a further improvement of the above solution, the mounting bracket includes a cross plate fixed to the top surface of the mounting frame and two fixing members mounted on the cross plate. The cross plate is located on one side of the cylinder. Two through holes for mounting the fixing members are provided on the cross plate. The fixing member includes a bottom plate penetrating through the through hole and side plates fixed to both ends of the bottom plate. A tightening bolt is threadedly connected to one of the side plates away from the cylinder, and one end of the tightening bolt abuts against the outer wall of the cross plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Through the cooperation between the force application mechanism and the steering mechanism, the linkage shaft can be driven to rotate while the cylinder extends, and then the turntable can be driven to rotate. Furthermore, when driving the locking assembly to drive the lever of the height valve to move up and down, the cylinder can also be driven to rotate, so as to apply a twisting force to the lever of the height valve, thus solving the problem of single force application direction during fatigue testing in the prior art.

[0025] 2. Through the cooperation between the steering mechanism, the force application mechanism and the traveling mechanism, while the cylinder extends and drives its own rotation, the mounting plate can also be driven to move along the length direction of the mounting frame, so as to apply a pulling force in the horizontal direction to the lever of the height valve, thereby further increasing the force application direction and achieving the purpose of further testing the performance of the height valve.

[0026] 3. Through the setting of the mounting bracket, it is convenient to quickly fix the height valve to be tested on the cross plate, and the setting of the connecting member can facilitate the connection between the lever of the height valve and the telescopic rod, thereby greatly reducing the difficulty for the operator to connect the height valve. Description of the Drawings

[0027] Figure 1 Structural schematic diagram of the present invention;

[0028] Figure 2 Structural schematic diagram of the back side of the mounting bracket of the present invention;

[0029] Figure 3 Structural schematic diagram of the bottom surface of the mounting plate;

[0030] Figure 4 Structural schematic diagram of the mounting plate and the force applying mechanism;

[0031] Figure 5 Structural schematic diagram of the transmission shaft and the rotating shaft;

[0032] Figure 6 Structural schematic diagram of the locking member;

[0033] Figure 7 Structural schematic diagram of the fixing mechanism;

[0034] Figure 8 Structural schematic diagram of the telescopic rod.

[0035] Main symbol description:

[0036] 1. Mounting frame; 2. Horizontal plate; 3. Cylinder; 4. Linkage rack; 5. Top plate; 6. Mounting ring; 7. Side plate; 8. Fixed rack; 9. Slide groove; 10. Mounting plate; 11. Counter; 12. Fixed plate; 13. Telescopic rod; 131. Movable rod; 132. Fixed sleeve; 14. Height valve; 15. Mounting block; 16. Transmission shaft; 17. Mounting groove; 18. Transmission groove; 19. Tightening bolt; 20. Turntable; 21. Slide block; 22. Transmission gear; 23. Linkage gear; 24. Connecting member; 241. Connecting plate; 242. Fixed bolt; 243. U-shaped frame; 25. Fixed ring; 26. Rotating shaft; 27. Linkage shaft; 28. Limiting sleeve. Detailed implementation manners

[0037] Next, in combination with the drawings and the specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.

[0038] Embodiment 1:

[0039] Please refer to Figure 1 , a fatigue test device for a height valve in this embodiment includes:

[0040] Test base, which includes a mounting frame 1 and a mounting plate 10 slidably connected inside the mounting frame 1. A mounting bracket for mounting a height valve 14 is fixed on the top of the mounting frame 1. The mounting bracket includes a cross plate 2 fixed on the top surface of the mounting frame 1 and two fixing members mounted on the cross plate 2. The cross plate 2 is located on one side of the cylinder 3. Two through holes for mounting the fixing members are provided on the cross plate 2. The fixing member includes a bottom plate penetrating through the through hole and side plates 7 fixed at both ends of the bottom plate. A tightening bolt 19 is threadedly connected to one of the side plates 7 away from the cylinder 3, and one end of the tightening bolt 19 abuts against the outer wall of the cross plate 2. When fixing the height valve 14, directly place the height valve between one of the side plates 7 away from the tightening bolt 19 and the cross plate 2, and then use this side plate 7 to press the height valve 14 tightly against the cross plate 2. Then rotate the tightening bolt 19 in the clockwise direction until the side plate 7 clamps the height valve 14 between the side plate 7 and the cross plate 2, and the fixing of the height valve 14 can be completed. The setting of the two fixing members can facilitate the simultaneous testing of two height valves 14.

[0041] The mounting frame 1 is a rectangular frame, and the bottom surface and one side of the mounting frame 1 are sealed by a sealing plate. Slide grooves 9 are provided on the inner walls of the two long sides of the mounting frame 1 along their length directions. Sliders 21 are fixed at both ends of the mounting plate 10, and one ends of the two sliders 21 extend into the two slide grooves 9 respectively and are slidably connected thereto. The sliders 21 slide inside the slide grooves 9, so that the mounting plate 10 can move along its length direction inside the mounting frame 1.

[0042] A force applying mechanism, which includes a turntable 20 rotatably connected to the top surface of a mounting plate 10, a cylinder 3 fixed to the top surface of the turntable 20, a top plate 5 fixed to the output end of the cylinder 3, and two mounting rings 6 mounted on the top surface of the top plate 5. Locking assemblies for connecting the height valve lever are hinged on both of the two mounting rings 6. The locking assembly includes a telescopic rod 13 hinged on the mounting ring 6 and a connecting member 24 mounted on the telescopic rod 13. The telescopic rod 13 includes a movable rod 131 and a fixed sleeve 132 movably sleeved on the outer periphery of one end of the movable rod 131. One end of the fixed sleeve 132 is hinged to the mounting ring 6. The connecting member 24 is fixedly connected to one end of the movable rod 131. A positioning bolt 133 is threadedly connected to the outer periphery of the fixed sleeve 132, and one end of the positioning bolt 133 abuts against the outer periphery of the movable rod 131. The connecting member 24 includes a connecting plate 241 fixedly connected to one end of the movable rod 131, a U-shaped frame 243 fixed to one end of the connecting plate 241, and a fixing bolt 242 threadedly connected to the outer wall of one side of the U-shaped frame 243. One end of the fixing bolt 242 extends into the inner side of the U-shaped frame 243, and a bolt hole matching the fixing bolt 242 is formed on the outer wall of the other side of the U-shaped frame 243. By providing two mounting rings, the lever parts on two height valves 14 can be connected simultaneously. When connecting the height valve 14, first adjust the length of the telescopic rod 13. When adjusting, first loosen the positioning bolt 133, and then the movable rod 131 can be moved. After one end of the lever of the height valve 14 is caught in the inner side of the U-shaped frame 243, then tighten the fixing bolt 242 so that one end of the fixing bolt 242 presses against the lever of the height valve 14, thereby fixing it inside the U-shaped frame 243. Then tighten the positioning bolt 133 to lock the length of the telescopic rod. Then connect the lever on the other height valve 14 in the same way. After setting the telescopic amount of the cylinder 3, then start the cylinder 3. During the telescopic process of the cylinder 3, the top plate 5 is driven to move up and down synchronously, and then the two locking assemblies are driven to move up and down synchronously. During the up and down movement of the locking assemblies, the lever parts of the height valve 14 will be pulled up and down, so as to perform a fatigue test on it.

[0043] Steering assembly, which includes a linkage shaft 27 rotatably connected to the mounting plate 10, a fixing ring 25 rotatably sleeved on the outer periphery of the output end of the air cylinder 3, and a linkage rack 4 fixed to the outer periphery of the fixing ring 25. One end of the linkage shaft 27 is in transmission connection with the turntable 20, and a linkage gear 23 meshing with the linkage rack 4 is fixed to the other end of the linkage shaft 27. A limiting sleeve 28 is movably sleeved on the outer periphery of the linkage rack 4. One side of the limiting sleeve 28 is fixedly connected to the outer wall of the mounting plate 10. A transmission groove 18 is formed on one side of the mounting plate 10. A rotating shaft 26 is rotatably connected to the top of the transmission groove 18. The top of the rotating shaft 26 is fixedly connected to the center of the bottom surface of the turntable 20. A driven bevel gear one is sleeved on the outer periphery of the rotating shaft 26. One end of the linkage shaft 27 extends into the transmission groove 18 and is fixed with a driving bevel gear one meshing with the driven bevel gear one. When the output end of the air cylinder 3 expands and contracts, it will drive the fixing ring 25 to rise and fall synchronously. After the fixing ring 25 moves, it will drive the linkage rack 4 to move synchronously. After the linkage rack 4 moves, it will drive the linkage gear 23 to rotate. The linkage gear 23 then drives the linkage shaft 27 to rotate synchronously. After the linkage shaft 27 rotates, it drives the rotating shaft 26 to rotate. The rotating shaft 26 then drives the turntable 20 to rotate, so that the air cylinder 3 can rotate while expanding and contracting, and further drive the top plate 5 and the locking assembly to rotate, achieving the purpose of applying a torsional force to the height valve, and further simulating the situation where the force direction of the height valve 14 is variable under natural conditions.

[0044] Counting mechanism, which includes a fixing plate 12 fixed to the top surface of the mounting plate 10 and a counter 11 installed on the fixing plate 12. The counter 11 faces the output end of the air cylinder 3. The counter 11 is a laser counter. By recording the number of times the output end of the air cylinder 3 expands and contracts, the number of test times can be recorded, and thus its fatigue resistance performance can be obtained.

[0045] Embodiment 2:

[0046] Combined with Figure 1 - Figure 5, on the basis of Embodiment 1, the further improvement of this embodiment lies in: a traveling mechanism, which is installed on the bottom surface of the mounting plate 10 and is used to drive the mounting plate 10 to move along the length direction of the mounting frame 1 when the linkage shaft 27 rotates. The bottom of the rotating shaft 26 extends below the mounting plate 10 and is fixed with a second driving bevel gear. The traveling mechanism includes a transmission shaft 16 disposed directly below the mounting plate 10, two mounting blocks 15 rotatably sleeved on the outer periphery of the transmission shaft 16, and a transmission member installed on the mounting frame 1 for driving the mounting plate 10 to move when the transmission shaft 16 rotates. Both mounting blocks 15 are fixedly connected to the bottom surface of the mounting plate 10. A second driven bevel gear meshing with the second driving bevel gear is sleeved on the outer periphery of the transmission shaft 16. Installation grooves 17 are provided on the inner walls of the two long sides of the mounting frame 1 along its length direction. The transmission member includes two fixed racks 8 respectively fixed on the bottom surface of the installation grooves 17 and transmission gears 22 fixed at both ends of the transmission shaft 16. The fixed racks 8 are arranged along the length direction of the installation grooves 17. The two transmission gears 22 are respectively located in the two installation grooves 17 and mesh with the fixed racks 8. When the rotating shaft 26 rotates, it will drive the transmission shaft 16 to rotate. After the transmission shaft 16 rotates, it will drive the transmission gears 22 to rotate. Since the fixed racks 8 do not move, after the transmission gears 22 rotate, they will roll along the length direction of the fixed racks 8, thereby driving the mounting plate 10 to move in the same direction. When the rotating shaft 26 rotates in different directions, the mounting plate 10 will move in different directions. Thus, while the air cylinder 3 expands and contracts, a pulling force in the horizontal direction can be applied to the height valve 14, so that the direction of the applied force can be further increased, and the fatigue degree of the height valve 14 in an extreme environment can be tested. The fatigue resistance of the height valve under various force directions is further tested.

[0047] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A fatigue test device for a height valve, characterized in that: include: The test base comprises a mounting frame and a mounting plate slidably connected to the inner side of the mounting frame, and a mounting frame for mounting a height valve is fixed on the top of the mounting frame; A force-applying mechanism, comprising a turntable rotatably connected to the top surface of the mounting plate, a cylinder fixed to the top surface of the turntable, a top plate fixed to the output end of the cylinder, and two mounting rings mounted on the top surface of the top plate, both mounting rings being hinged with a locking assembly for connecting a height valve lever; The steering assembly includes a linkage shaft rotatably connected to the mounting plate, a fixed ring rotatably sleeved on the outer periphery of the cylinder output end, and a linkage rack fixed on the outer periphery of the fixed ring, one end of the linkage shaft is transmission-connected to the turntable, and the other end of the linkage shaft is fixed with a linkage gear meshing with the linkage rack; A travel mechanism, which is mounted on the bottom surface of the mounting plate and is used to drive the mounting plate to move along the length direction of the mounting frame when the linkage shaft rotates; The counting mechanism comprises a fixing plate fixed on the top surface of the mounting plate and a counter mounted on the fixing plate, wherein the counter is directly opposite to the output end of the cylinder.

2. A fatigue test device for a height valve according to claim 1, characterized in that: The installation frame is a rectangular frame, and the bottom surface and one side of the installation frame are sealed by sealing plates. The inner walls of the long sides of the installation frame are provided with slide grooves arranged along the length direction thereof. Slide blocks are fixed at both ends of the installation plate, and one end of the two slide blocks respectively extends into the two slide grooves and slides therewith.

3. A fatigue test device for a height valve according to claim 1, characterized in that: A transmission groove is provided on one side of the mounting plate, a rotating shaft is rotatably connected to the top of the transmission groove, the top of the rotating shaft is fixedly connected to the center of the bottom surface of the turntable, a driven bevel gear is sleeved on the outer periphery of the rotating shaft, one end of the linkage shaft extends into the transmission groove and is fixed with an active bevel gear meshing with the driven bevel gear.

4. A fatigue test device for a height valve according to claim 3, characterized in that: The bottom of the rotating shaft extends to the bottom of the mounting plate and is fixed with a second active bevel gear. The travel mechanism includes a transmission shaft arranged directly below the mounting plate, two mounting blocks rotatably sleeved on the outer periphery of the transmission shaft, and a transmission member installed on the mounting frame for driving the mounting plate to move when the transmission shaft rotates. The two mounting blocks are fixedly connected to the bottom surface of the mounting plate, and a second driven bevel gear meshing with the second active bevel gear is sleeved on the outer periphery of the transmission shaft.

5. A fatigue test device for a height valve according to claim 4, characterized in that: The inner walls of the long sides of the mounting frame are provided with mounting grooves arranged along the length direction thereof. The transmission member includes two fixed racks respectively fixed to the bottom surfaces of the mounting grooves and transmission gears fixed to the two ends of the transmission shaft. The fixed racks are arranged along the length direction of the mounting grooves. The two transmission gears are respectively located in the two mounting grooves and meshed with the fixed racks.

6. A fatigue test device for a height valve according to claim 1, characterized in that: The locking assembly includes a telescopic rod hinged on a mounting ring and a connecting piece installed on the telescopic rod. The telescopic rod includes a movable rod and a fixed sleeve movablely mounted on the outer periphery of one end of the movable rod. One end of the fixed sleeve is hinged to the mounting ring. The connecting piece is fixed to one end of the movable rod. The outer periphery of the fixed sleeve is threadedly connected to a positioning bolt, and one end of the positioning bolt abuts against the outer periphery of the movable rod.

7. A fatigue test device for a height valve according to claim 6, characterized in that: The connecting member includes a connecting plate fixed to one end of the movable rod, a U-shaped frame fixed to one end of the connecting plate, and a fixing bolt threadedly connected to the outer wall of one side of the U-shaped frame, one end of the fixing bolt extends to the inner side of the U-shaped frame, and a bolt hole matching the fixing bolt is opened on the outer wall of the other side of the U-shaped frame.

8. A fatigue test device for a height valve according to claim 1, characterized in that: The mounting frame includes a horizontal plate fixed on the top surface of the mounting frame and two fixing parts installed on the horizontal plate. The horizontal plate is located on one side of the cylinder. Two through holes are provided on the horizontal plate for installing the fixing parts. The fixing parts include a bottom plate provided through the through holes and side plates fixed at both ends of the bottom plate. A clamping bolt is threadedly connected to one of the side plates away from the cylinder, and one end of the clamping bolt is in contact with the outer wall of the horizontal plate.

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