A comprehensive test device for crane steering

Abstract

The application relates to the technical field of railway equipment testing, in particular to a comprehensive test device for a crane steering unit, which comprises a detection shell, an analog track is fixedly connected to the inner side surface of the detection shell, a pressure sensor is arranged on the lower end inner wall of the detection shell and below the analog track, the pressure sensor is connected with a display control device, an analog vehicle frame is arranged above the analog track, and a to-be-tested steering unit is arranged above the analog vehicle frame. The application can press the to-be-tested steering unit by arranging a pressing assembly on the surface of the transverse frame, and the pressing assembly can press the to-be-tested steering unit; a matched extruding assembly is arranged above the pressing assembly, the extruding assembly can extend to apply pressure on the pressing assembly, the to-be-tested steering unit can simulate the pressure in the use process, the effect that pressure can be applied on different positions of the to-be-tested steering unit to simulate the use environment is achieved, and the problem that the independent parts of the steering unit cannot be tested in the simulated use environment is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway equipment testing, in particular to a comprehensive test device for crane steering. BACKGROUND

[0002] Rail transit refers to a type of transportation tool or system in which vehicles need to run on specific tracks. According to the national standard "Commonly Used Terms for Urban Public Transportation", urban rail transit is defined as "a general term for fast mass public transportation that usually uses electric energy as power and adopts wheel-rail operation mode." With the diversified development of trains and rail technology, rail transit is showing more and more types, not only covering long-distance land transportation, but also widely used in medium and short-distance urban public transportation. Common rail transit includes traditional railways (ordinary railways, intercity railways and urban railways), subways, light rails and trams, in addition to maglev rail systems, monorail systems and other new types of rail transit. In the Chinese national standard "Commonly Used Terms for Urban Public Transportation", urban rail transit is defined as "a general term for fast mass public transportation that usually uses electric energy as power and adopts wheel-rail operation mode." In the field of rail transit technology, after the assembly of the vehicle bogie, comprehensive testing of the bogie is required to ensure the quality and safety performance.

[0003] Through retrieval, Chinese patent publication No. CN104897422B discloses a vehicle bogie comprehensive test bench, which comprises a base, a static load test device, a running-in test device and a lifting support system installed on the base; the static load test device comprises a gantry, a pressing device and fixed rails, the top of the fixed rail is used to support the outer tread of the wheel of the vehicle bogie, and a pressure sensor is installed in the rail groove of each fixed rail; the running-in test device comprises a running-in system and a lifting mechanism, and the friction wheel of the running-in system is located directly below the inner wheel rim of the wheel bottom; each wheel of the vehicle bogie is equipped with a fixed rail and a running-in test device, and the lifting support system is located directly below the center of mass of the vehicle bogie. The static load test device, the running-in test device and the weighing function are integrated, which effectively saves space, eliminates the need for cranes for transfer, greatly reduces the lifting workload, improves work efficiency and equipment operation safety, and makes the process layout more reasonable and the maintenance more convenient and efficient.

[0004] Through retrieval, Chinese patent publication number CN112834250A discloses a high-speed bogie comprehensive test bed, which comprises a plurality of track devices capable of bearing test vehicles and traction devices located on both sides of the track devices. The track device comprises a mounting table and a plurality of track wheel assemblies arranged in the direction of travel of the test vehicle. Each track wheel assembly is correspondingly arranged with a wheel pair on the bogie of the test vehicle. The track wheel assembly comprises two track wheel units arranged side by side in parallel and a first traction motor for driving any track wheel unit. The track wheel unit comprises two support seats mounted on the left and right sides of the mounting table, a track wheel shaft mounted on the support seat, and a track wheel mounted on both ends of the track wheel shaft. The invention uses the wheels of the bogie and the adjacent two track wheels to form a non-falling wheel structure, and combines the shock assembly arranged at the end of the track wheel shaft to realize comprehensive testing of the performance of the bogie. The size and structure of the wheels and track wheels are set to improve the reliability of the detection.

[0005] In view of the related technology in the above, the following defects are considered to exist: during bogie testing, the rotating parts of the bogie cannot be tested independently. With the development of rail trains, the running speed is getting faster and faster, and the quality requirements for independent parts are getting higher and higher. The existing test equipment cannot test the independent parts under pressure and rotation, and cannot simulate the use environment test of the independent parts of the steering unit, cannot simulate the operation action and cannot monitor the problems. Therefore, a crane steering comprehensive test device is proposed to solve the above problems. SUMMARY

[0006] In order to solve the problems proposed in the background art, the present application provides a crane steering comprehensive test device.

[0007] The crane turning comprehensive test device provided by the application adopts the technical scheme as follows: a detection shell is provided, an analog track is fixedly connected to the inner side surface of the detection shell, a pressure sensor is arranged on the inner wall of the lower end of the detection shell and below the analog track, the pressure sensor is connected with a display control device, an analog vehicle frame is arranged above the analog track, a to-be-tested turning unit is installed above the analog vehicle frame, a positioning guide frame is fixedly connected to the inner side of the detection shell, an avoidance motor is fixedly connected to the inner side of the positioning guide frame, a transverse screw rod is fixedly connected to the output end of the avoidance motor, a transverse frame is engaged with the outer surface of the transverse screw rod, the two sides of the transverse frame are slidably connected with the inner wall of the positioning guide frame, a pressing assembly is arranged on the surface of the transverse frame, a lifting support shell is fixedly connected to the upper end of the detection shell, a lifting assembly is arranged on the inner side of the lifting support shell, there are two groups of the lifting assembly, the two groups of the lifting assembly are jointly clamped with a lifting platform on the side close to each other, a torsion mechanism is rotatably connected to the inner side of the lifting platform, a connecting pile is slidably connected to the inner side of the lower end of the torsion mechanism, the lower end of the connecting pile is connected with the to-be-tested turning unit through a screw, a stabilizing frame is fixedly connected to the upper end of the lifting support shell, a torsion motor is fixedly connected to the upper end of the stabilizing frame, a sliding tooth column is fixedly connected to the output end of the torsion motor, the sliding tooth column is engaged with the torsion mechanism, a linkage frame is fixedly connected to the upper surface of the lifting platform, a pressing assembly is fixedly connected to the inner side of the linkage frame, the pressing assembly is in contact with the pressing assembly, a stabilizing rod is rotatably connected to the surface of the linkage frame, a detection rod is rotatably connected to the surface of the linkage frame, and the detection rod is connected with the display control device.

[0008] Optionally, the pressing assemblies are arrayed on the surface of the transverse frame, the pressing assembly is composed of a pressing cap, a return spring and a clamping key, the pressing cap penetrates through the transverse frame, the return spring is sleeved on the outer side of the pressing cap, the return spring is located above the transverse frame, the clamping key is fixedly connected to the lower end of the pressing cap, and the clamping key is clamped above the to-be-tested turning unit.

[0009] Optionally, the lifting assembly comprises a lifting motor, a lifting screw rod and a lifting arm, the lifting motor is fixedly connected to the inner side of the lifting support shell, the output end of the lifting motor is fixedly connected with the lifting screw rod, the surface of the lifting screw rod is threadedly connected with the lifting arm, the lifting arm is slidably connected with the inner wall of the lifting support shell, and the lower end of the lifting arm is provided with a clamping groove for clamping the lifting platform.

[0010] Optionally, the torsion mechanism is composed of a torsion disc, a torsion cylinder, a stabilizing disc and a driving ring, the inner side of the teeth of the torsion disc is a square hole, the upper surface of the torsion disc is fixedly connected with the torsion cylinder, the upper end of the torsion cylinder is fixedly connected with the stabilizing disc, the outer side of the stabilizing disc is provided with teeth, and the upper end of the stabilizing disc is fixedly connected with the driving ring.

[0011] Optionally, the lower end of the connecting pile is disc-shaped, a square prism is arranged on the upper surface of the disc of the connecting pile, the torsion disc is sleeved on the outer side of the square prism and is slidably connected with the square prism, and the edge of the disc of the connecting pile is provided with a screw.

[0012] Optionally, the simulated track consists of guide rails and sleepers, with pressure sensors positioned below the sleepers.

[0013] Optionally, the extrusion assembly consists of several independent hydraulic telescopic rods, with each extrusion assembly corresponding to a pressing assembly, and the free end of the extrusion assembly is provided with a locking groove.

[0014] Optionally, the stabilizer bar is a round rod in the middle and gears at both ends. The gear at the upper end of the stabilizer bar meshes with the stabilizer disc, and the gear at the lower end of the stabilizer bar meshes with the torsion disc.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. This crane steering integrated testing device, by setting a pressing component on the surface of the transverse frame, allows the pressing component to press into contact with the steering unit under test. By setting a matching squeezing component above the pressing component, the squeezing component can extend and apply pressure to the pressing component, enabling the pressing component to apply pressure to the surface of the steering unit under test. By setting squeezing components in different directions and setting matching pressing components one by one, pressure can be applied to the surface of the steering unit under test at different positions, allowing the steering unit under test to simulate the pressure during use. This achieves the effect of applying pressure to different positions of the steering unit under test to simulate the use environment, solving the problem of not being able to simulate the use environment test for independent components of the steering unit.

[0017] 2. This crane steering comprehensive testing device, by setting a connecting pile that matches the steering unit under test, enables the steering unit under test to rotate by controlling the rotation of the connecting pile. By setting two sets of stabilizing rods on the outside of the torsion mechanism, the torsion mechanism can be distributed and reduced during rotation, preventing deformation of the torsion mechanism after long-term use. By using a detection rod to test the stability of the torsion mechanism at various positions during rotation, feedback is provided on the rotational break-in of the test piece. This achieves the effect of driving the steering unit under test to rotate to simulate the operation and monitor it, solving the problem that the test device cannot simulate the operation and monitor it.

[0018] 3. This crane steering integrated testing device, by setting up a simulated track and placing pressure sensors below the simulated track, enables the steering mechanism to determine the pressure generated during testing and the pressure applied to the track. This allows the pressure of the bogie on the track to also be detected during testing, achieving the effect of detecting the pressure of the bogie on the track and solving the problem that the pressure of the crane bogie on the track cannot be calculated and detected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the detection shell structure in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the transverse frame structure in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the simulated track structure in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the lifting component structure in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the connecting pile structure in the embodiments of this application;

[0025] Figure 7 This is a schematic diagram of the linkage frame structure in an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the torsion mechanism structure in an embodiment of this application.

[0027] Reference numerals: 1. Detection housing; 2. Simulated track; 3. Pressure sensor; 4. Display control device; 5. Simulated chassis; 6. Steering unit to be tested; 7. Positioning guide frame; 8. Avoidance motor; 9. Lateral threaded rod; 10. Lateral frame; 11. Pressing assembly; 111. Pressing cap; 112. Return spring; 113. Locking key; 12. Lifting support housing; 13. Lifting assembly; 131. Lifting motor; 132. Lifting threaded rod; 133. Lifting arm; 14. Lifting platform; 15. Torsion mechanism; 151. Torsion disc; 152. Torsion cylinder; 153. Stabilizing disc; 154. Drive ring; 16. Connecting pile; 17. Stabilizing frame; 18. Torsion motor; 19. Sliding toothed column; 20. Linkage frame; 21. Extrusion assembly; 211. Locking groove; 22. Stabilizing rod; 23. Detection rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0029] This application discloses a comprehensive testing device for crane steering. For example... Figures 1-8 As shown, the device includes a detection housing 1, a simulated track 2 fixedly connected to the inner surface of the detection housing 1, and a pressure sensor 3 installed on the lower inner wall of the detection housing 1. The pressure sensor 3 is located below the simulated track 2. The simulated track 2 is divided into guide rails and sleepers. The pressure sensor 3 is located below the sleepers. The simulated track 2, by setting guide rails and sleepers, facilitates the bogie to be tested above and makes it easy to detect the pressure generated on the track during the test.

[0030] Pressure sensor 3 is connected to display control device 4. A simulated vehicle frame 5 is set above simulated track 2. A steering unit 6 to be tested is installed above simulated vehicle frame 5. A positioning guide frame 7 is fixedly connected to the inner side of detection housing 1. An avoidance motor 8 is fixedly connected to the inner side of positioning guide frame 7. A transverse threaded rod 9 is fixedly connected to the output end of avoidance motor 8. A transverse frame 10 is engaged with the outer surface of transverse threaded rod 9. The two sides of transverse frame 10 are slidably connected to the inner wall of positioning guide frame 7. A pressing component 11 is set on the surface of transverse frame 10. The pressing components 11 are arrayed on the surface of transverse frame 10. The pressing component 11 consists of a pressing cap 111 and a return spring. Composed of 112 and locking key 113, the pressing cap 111 passes through the transverse frame 10, and a return spring 112 is sleeved on the outside of the pressing cap 111. The return spring 112 is located above the transverse frame 10. The lower end of the pressing cap 111 is fixedly connected to the locking key 113. The locking key 113 is locked above the steering unit 6 to be tested. The pressing component 11 can use the locking key 113 to lock and press the steering unit 6 to be tested. By setting the locking key 113 to a smooth plane, it is convenient for the steering unit 6 to be tested to slide against it when it rotates. By setting the return spring 112, the locking key 113 can be lifted and reset in time when it is not affected by pressure.

[0031] The upper end of the detection housing 1 is fixedly connected to a lifting support housing 12. A lifting assembly 13 is provided inside the lifting support housing 12. There are two sets of lifting assemblies 13. The two sets of lifting assemblies 13 are connected to a lifting platform 14 on the side that is close to each other. A torsion mechanism 15 is rotatably connected inside the lifting platform 14. The lifting assembly 13 includes a lifting motor 131, a lifting threaded rod 132 and a lifting arm 133. The lifting motor 131 is fixedly connected to the inside of the lifting support housing 12. The output end of the lifting motor 131 is fixedly connected to the lifting threaded rod 132. The lifting arm 133 is threadedly connected to the surface of the lifting threaded rod 132. The lifting arm 133 is slidably connected to the inner wall of the lifting support housing 12. The lower end of the lifting arm 133 is provided with a slot to engage with the lifting platform 14. The lifting assembly 13 can drive the lifting platform 14 to rise and fall, which facilitates the lifting platform 14 to rise to avoid the detection object and to fall to approach the detection object.

[0032] The torsion mechanism 15 is slidably connected to the inner side of its lower end by a connecting pile 16. The torsion mechanism 15 consists of a torsion disc 151, a torsion cylinder 152, a stabilizing disc 153, and a drive ring 154. The outer side of the torsion disc 151 is provided with teeth, and the inner side is a square hole. The torsion cylinder 152 is fixedly connected to the upper surface of the torsion disc 151. The upper end of the torsion cylinder 152 is fixedly connected to the stabilizing disc 153. The outer side of the stabilizing disc 153 is provided with teeth, and the upper end of the stabilizing disc 153 is fixedly connected to the drive ring 154. The torsion mechanism 15 can rotate to drive the connecting pile 16 to rotate, so that the steering unit 6 under test has power to rotate after pressure is applied, which is convenient for simulation test.

[0033] The lower end of the connecting pile 16 is connected to the steering unit 6 under test by screws. The lower end of the connecting pile 16 is disc-shaped. A quadrangular prism is provided on the upper surface of the disc of the connecting pile 16. The torsion disk 151 is sleeved on the outside of the quadrangular prism and is slidably connected to it. Screws are provided on the edge of the disc of the connecting pile 16. The connecting pile 16 can cooperate with the steering unit 6 under test to facilitate the rotation of the steering unit 6 under test.

[0034] A stabilizing frame 17 is fixedly connected to the upper end of the lifting support shell 12. A torsion motor 18 is fixedly connected to the upper end of the stabilizing frame 17. A sliding toothed column 19 is fixedly connected to the output end of the torsion motor 18. The sliding toothed column 19 meshes with the torsion mechanism 15. A linkage frame 20 is fixedly connected to the upper surface of the lifting platform 14. A pressing assembly 21 is fixedly connected to the inner side of the linkage frame 20. The pressing assembly 21 is composed of several independent hydraulic telescopic rods. The pressing assembly 21 corresponds one-to-one with the pressing assembly 11. The free end of the pressing assembly 21 is provided with a locking groove 211. The pressing assembly 21 can extend one by one to control the lifting and lowering of the locking key 113. It can apply pressure to various positions of the steering unit 6 under test, which is convenient for simulating various working states of different components.

[0035] The extrusion assembly 21 contacts the pressing assembly 11. A stabilizing rod 22 is rotatably connected to the surface of the linkage frame 20. The stabilizing rod 22 is a round rod in the middle and gears at both ends. The gear at the upper end of the stabilizing rod 22 meshes with the stabilizing disk 153, and the gear at the lower end of the stabilizing rod 22 meshes with the torsion disk 151. The stabilizing rod 22 can help eliminate the torsional force generated by the torsion mechanism 15 when it rotates by meshing with the upper and lower ends of the torsion mechanism 15.

[0036] A detection rod 23 is rotatably connected to the surface of the linkage frame 20. The detection rod 23 is connected to the display control device 4. The pressure sensor 3, the display control device 4 and the detection rod 23 are all existing sensors and electrical components. The pressure sensor 3 is used to detect the pressure of the simulated track 2. The display control device 4 is used to display data and provide feedback. The detection rod 23 is used to detect the smoothness of the rotation of the torsion mechanism 15. The data from the pressure sensor 3 and the detection rod 23 are both displayed and controlled by the display control device 4.

[0037] The implementation principle of the crane steering comprehensive testing device in this application embodiment is as follows: In use, the steering unit 6 to be tested is first installed on the simulated frame 5, allowing the simulated frame 5 to move to a suitable position on the surface of the simulated track 2. The avoidance motor 8 is activated to drive the transverse threaded rod 9 to rotate. The rotation of the transverse threaded rod 9 pushes the transverse frame 10 to extend, causing the transverse frame 10 to surround the steering unit 6 to be tested. The lifting motor 131 is activated to drive the lifting threaded rod 132 to rotate, causing the lifting arm 133 to lower the lifting platform 14, causing the pressing component 21 to clamp the pressing component 11. According to the test requirements, the pressing cap 111 is pressed using a single pressing component 21 or all pressing components 21, so that the locking key 113 applies force in various directions to the steering unit 6 to be tested. By installing the matching connecting pile 16 above the steering unit 6 to be tested, the sliding toothed column 19 is rotated by starting the torsion motor 18, which pushes the torsion mechanism 15 to rotate, and the torsion mechanism 15 drives the connecting pile 16 to rotate, so that the steering unit 6 to be tested rotates and the data of its connection part is tested. The data after the component is rotated under pressure is detected by the pressure sensor 3 and the detection rod 23.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A crane steering comprehensive testing device, comprising a testing housing (1), characterized in that: The inner surface of the detection housing (1) is fixedly connected to a simulated track (2). A pressure sensor (3) is installed on the lower inner wall of the detection housing (1). The pressure sensor (3) is located below the simulated track (2) and is connected to a display control device (4). A simulated vehicle frame (5) is installed above the simulated track (2). A steering unit (6) to be tested is installed above the simulated vehicle frame (5). A positioning guide frame (7) is fixedly connected to the inner side of the detection housing (1). An avoidance motor (8) is fixedly connected to the inner side of the positioning guide frame (7). A transverse threaded rod (9) is fixedly connected to the output end of the avoidance motor (8). A transverse frame (1) meshes with the outer surface of the transverse threaded rod (9). 0), the two sides of the transverse frame (10) are slidably connected to the inner wall of the positioning guide frame (7). The surface of the transverse frame (10) is provided with a pressing component (11). The pressing component (11) is arrayed on the surface of the transverse frame (10). The pressing component (11) consists of a pressing cap (111), a reset spring (112) and a locking key (113). The pressing cap (111) passes through the transverse frame (10). The reset spring (112) is sleeved on the outside of the pressing cap (111). The reset spring (112) is located above the transverse frame (10). The lower end of the pressing cap (111) is fixedly connected to the locking key (113). The locking key (113) is locked above the steering unit (6) to be tested. The upper end of the detection housing (1) is fixedly connected to a lifting support housing (12). A lifting assembly (13) is provided inside the lifting support housing (12). There are two sets of lifting assemblies (13). The two sets of lifting assemblies (13) are connected to a lifting platform (14) on the side that is close to each other. The lifting assembly (13) includes a lifting motor (131), a lifting threaded rod (132) and a lifting arm (133). The lifting motor (131) is fixedly connected to the inside of the lifting support housing (12). The output end of the lifting motor (131) is fixedly connected to the lifting threaded rod (132). The lifting arm (133) is threadedly connected to the surface of the lifting threaded rod (132). The lifting arm (133) is slidably connected to the inner wall of the lifting support housing (12). The lower end of the lifting arm (133) is provided with a slot to engage with the lifting platform (14). A torsion mechanism (15) is rotatably connected inside the lifting platform (14). The torsion mechanism (15) consists of a torsion disc (151), a torsion cylinder (152), a stabilizing disc (153), and a drive ring (154). The torsion disc (151) has teeth on the outside and square holes on the inside. The torsion cylinder (152) is fixedly connected to the upper surface of the torsion disc (151). The stabilizing disc (153) is fixedly connected to the upper end of the torsion cylinder (152). The stabilizing disc (153) has teeth on the outside and a drive ring (154) is fixedly connected to the upper end of the stabilizing disc (153). The connecting pile (16) is slidably connected to the inner side of the lower end of the torsion mechanism (15). The lower end of the connecting pile (16) is connected to the steering unit (6) to be tested by screws. The lower end of the connecting pile (16) is disc-shaped. The upper surface of the disc of the connecting pile (16) is provided with a quadrangular prism. The torsion disc (151) is sleeved on the outside of the quadrangular prism and slidably connected to it. The edge of the disc of the connecting pile (16) is provided with screws. A stabilizing frame (17) is fixedly connected to the upper end of the lifting support shell (12). A torsion motor (18) is fixedly connected to the upper end of the stabilizing frame (17). A sliding gear column (19) is fixedly connected to the output end of the torsion motor (18). The sliding gear column (19) meshes with the torsion mechanism (15). A linkage frame (20) is fixedly connected to the upper surface of the lifting platform (14). A pressing assembly (21) is fixedly connected to the inner side of the linkage frame (20). The pressing assembly (21) consists of several independent hydraulic telescopic rods. The pressing assembly (21) and the pressing assembly (11) are connected to each other. One-to-one correspondence, the free end of the extrusion component (21) is provided with a locking groove (211), the extrusion component (21) is in contact with the pressing component (11), the surface of the linkage frame (20) is rotatably connected to a stabilizing rod (22), the surface of the linkage frame (20) is rotatably connected to a detection rod (23), the detection rod (23) is connected to the display control device (4), the middle of the stabilizing rod (22) is a round rod, and the two ends are gears. The upper gear of the stabilizing rod (22) meshes with the stabilizing disk (153), and the lower gear of the stabilizing rod (22) meshes with the torsion disk (151).

2. The crane steering integrated testing device according to claim 1, characterized in that: The simulated track (2) is divided into guide rails and sleepers, and pressure sensors (3) are set under the sleepers.

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