Periodic cycle test bench for constant-speed drive shaft

Abstract

The utility model discloses a constant speed drive shaft periodic cycle test bench, which comprises an installation platform, a swing device, a lifting device and a transverse distance adjusting device, the swing device, the lifting device and the transverse distance adjusting device are arranged on the installation platform, the swing device comprises a left swing device and a right swing device which are arranged on two sides of the lifting device, and the left transverse distance adjusting device is connected with the left swing device. The left transverse distance adjusting device is connected with the left swing device, the right transverse distance adjusting device is connected with the right swing device, the left swing device comprises a loading gear assembly, the right swing device comprises a driven gear assembly, and the loading gear assembly, the driven gear assembly and the lifting device are all connected with clamps. And a clamp on the lifting device is connected with clamps on the loading gear assembly and the driven gear assembly through a constant-speed driving shaft. According to the periodic cycle test stand for the constant-speed driving shaft, the transverse distance adjusting device is arranged, so that the periodic cycle life test requirements of driving shafts with different lengths can be quickly and accurately met, and the flexibility and the efficiency of the test stand are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile product testing, in particular to a constant speed drive shaft periodic cycle test bench. Background Art

[0002] In the modern automobile industry, the Constant Velocity Joint (CVJ) is a key transmission component, and its performance directly affects the vehicle's driving stability and power transmission efficiency. The CVJ is responsible for ensuring that the driving force is transmitted from the gearbox to the wheels smoothly and without loss at different angles and speeds. Especially when the vehicle is turning, ensuring that the speed of the wheels on both sides is coordinated is crucial to improving the driving experience and the overall performance of the vehicle.

[0003] The structure of the constant velocity joint drive shaft is mainly composed of three parts: the fixed end universal joint, the mandrel, and the mobile end universal joint. However, due to the influence of various factors during the design and manufacturing process, it may not achieve the expected performance after assembly, which will have a direct impact on the vehicle's power and motion transmission range, steering performance, component wear rate, vehicle operation performance, ride comfort performance, vibration, noise and other aspects. With the continuous advancement of automobile manufacturing technology, the manufacturing quality requirements for constant velocity joint drive shaft assemblies are becoming increasingly stringent. Therefore, in order to ensure that the product meets actual use needs, it is crucial to conduct periodic cycle life tests on constant velocity joint drive shaft assemblies.

[0004] At present, the existing constant-speed drive shaft cycle life test bench has a large footprint and faces significant difficulties in adjusting the test equipment for drive shafts of different lengths. It has certain limitations in key indicators such as operational flexibility and test cycle. These shortcomings may have a negative impact on the efficiency of our R&D and production processes, thereby increasing production costs. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the current constant-speed drive shaft periodic cycle test bench, the utility model provides a constant-speed drive shaft periodic cycle test bench, which can quickly and accurately adapt to the periodic cycle life test requirements of drive shafts of different lengths through the setting of a lateral distance adjustment device, thereby improving the flexibility and efficiency of the test bench.

[0006] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0007] An isokinetic drive shaft periodic cyclic test bench, comprising an installation platform, a swing device and a lifting device arranged on the installation platform, and further comprising a lateral distance adjustment device arranged on the installation platform. The swing device comprises a left swing device and a right swing device arranged on both sides of the lifting device. The lateral distance adjustment device comprises a left lateral distance adjustment device and a right lateral distance adjustment device arranged on both sides of the lifting device. The left lateral distance adjustment device is connected to the left swing device, and the right lateral distance adjustment device is connected to the right swing device. The left swing device comprises a loading gear assembly, and the right swing device comprises a driven gear assembly. Clamps are connected to the loading gear assembly, the driven gear assembly and the lifting device. The clamp on the lifting device is connected to the clamps on the loading gear assembly and the driven gear assembly through an isokinetic drive shaft.

[0008] According to one aspect of the present invention, the left swing device further comprises a left swing platform arranged on the installation platform. The loading gear assembly is arranged on the left swing platform. The loading gear assembly comprises a loading gear box body arranged on the left swing platform. An active speed shaft and a driven speed shaft are arranged in the loading gear box body. A swing loading cylinder is sleeved on the active speed shaft, and a loading gear assembly is sleeved on the driven speed shaft. The swing loading cylinder is meshed and connected with the loading gear assembly. The loading gear assembly is connected to the loading gear box body. A left servo motor is fixedly installed on the loading gear box body. The left servo motor is connected to the loading gear assembly. The left swing platform is connected to the left lateral distance adjustment device. Clamps are arranged at one ends of the active speed shaft and the driven speed shaft close to the lifting device.

[0009] According to one aspect of the present invention, the left swing platform comprises a left sliding plate installed on the installation platform. A left swing angle device is arranged on the left sliding plate. A left swing plate is connected to the left swing angle device. The loading gear box body is arranged on the left swing plate. A lower left support is fixedly installed on the left sliding plate. An upper left support is arranged on the bottom surface of the left swing plate. The upper left support and the lower left support are connected through an oil cylinder.

[0010] According to one aspect of the present utility model, the right swing device further includes a right swing platform disposed on the installation platform, the driven gear assembly is disposed on the right swing platform, the driven gear assembly includes a driven gear housing disposed on the right swing platform, a first driven shaft and a second driven shaft are disposed inside the driven gear housing, a driven gear assembly is sleeved on the first driven shaft and the second driven shaft, a right servo motor is fixedly installed on the driven gear housing, the right servo motor is connected to the driven gear assembly, the right swing platform is connected to the right lateral distance adjustment device, and a fixture is disposed at one end of the first driven shaft and the second driven shaft close to the lifting device.

[0011] According to one aspect of the present utility model, the right swing platform includes a right sliding plate installed on the installation platform, a right swing angle device is disposed on the right sliding plate, a right swing plate is connected to the right swing angle device, the driven gear housing is disposed on the right swing plate, a lower right support is fixedly installed on the right sliding plate, an upper right support is disposed on the bottom surface of the right swing plate, and the upper right support and the lower right support are connected by an oil cylinder.

[0012] According to one aspect of the present utility model, a distance pointer and a swing angle pointer are disposed on both the left swing device and the right swing device.

[0013] According to one aspect of the present utility model, the installation platform is provided with a sliding track, and both the left lateral distance adjustment device and the right lateral distance adjustment device include lead screws disposed in the sliding track, a guide seat and a nut seat are sleeved on the lead screws, one end of the lead screw is connected to the motor output shaft, the motors are fixedly installed at both ends of the installation platform, and the nut seats are respectively connected to the left swing device and the right swing device.

[0014] According to one aspect of the present utility model, the lifting device includes a lifting support disposed on the installation platform, a transmission device is disposed inside the lifting support, a lifting oil cylinder is connected to the top of the transmission device, a plurality of the fixtures are disposed on the transmission device, a plurality of sensors are disposed on the transmission device, and the sensors are connected to the fixtures.

[0015] According to one aspect of the present utility model, an oil supply station is further included, and the oil supply station is connected to the constant velocity drive shaft periodic circulation test bench through an oil pipeline.

[0016] According to one aspect of the present utility model, an air cooling system is further included, and the air cooling system is connected to the constant velocity drive shaft periodic circulation test bench through a pipeline.

[0017] Advantages of the implementation of the present utility model: By the mutual cooperation of the lifting device and the swinging device, the lifting device can provide a moving angle in the vertical direction for the constant velocity drive shaft, and the swinging device can provide a swinging angle in the horizontal direction for the constant velocity drive shaft. The swinging loading cylinder provides a torque loading for the driving rotation shaft. The loading gear assembly, the driving rotation shaft, and the driven rotation shaft drive the constant velocity drive shaft to rotate at a set speed, thereby simulating various situations encountered by an automobile during actual driving, and conducting a cyclic fatigue life test on the constant velocity drive shaft under the simulated actual vehicle working conditions; through the lateral distance adjustment device, cyclic fatigue life tests can be carried out on constant velocity drive shafts of different lengths, thereby significantly enhancing the applicability and flexibility of the test bench. Through the setting of the swinging platform, and an encoder is arranged inside the swinging platform to monitor changes in parameters such as the swinging angle, swinging position, swinging speed, or acceleration, precise detection of the swinging angle and swinging speed can be performed, ensuring the accuracy and reliability of the measurement results; through the setting of the oil supply station, an oil source can be provided for the oil cylinder, ensuring the stability of the oil source. Through the setting of the air cooling system, the temperature of the drive shaft is prevented from being too high, affecting the service life of the drive shaft and thus affecting the accuracy of the test. The cyclic fatigue test bench for the constant velocity drive shaft described in the present utility model has a compact and reasonable structure, occupies a small area, and is convenient and flexible to operate. It can simulate the cyclic fatigue life test under actual vehicle working conditions, ensuring the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is the front view of a cyclic fatigue test bench for a constant velocity drive shaft described in the present utility model;

[0020] Figure 2 is the left view of a cyclic fatigue test bench for a constant velocity drive shaft described in the present utility model;

[0021] Figure 3 is the three-dimensional view of a cyclic fatigue test bench for a constant velocity drive shaft described in the present utility model;

[0022] Figure 4 is the sectional schematic view of a cyclic fatigue test bench for a constant velocity drive shaft described in the present utility model;

[0023] Figure 5 is the three-dimensional view of a cyclic fatigue test bench for a constant velocity drive shaft described in the present utility model.

[0024] 1. Installation platform; 11. Sliding track; 2. Lateral distance adjustment device; 21. Left lateral distance adjustment device; 211. Lead screw; 212. Guide seat; 213. Motor; 214. Nut seat; 22. Right lateral distance adjustment device; 221. Lead screw; 222. Guide seat; 223. Motor; 224. Nut seat; 3. Swing device; 31. Left swing device; 311. Loading gear assembly; 3111. Loading gear component; 3112. Swing loading cylinder; 3113. Loading gear box; 3114. Left servo motor; 3115. Active speed shaft; 3116. Driven speed shaft; 312. Left swing platform; 3121. Left swing plate; 3122. Left swing angle device; 3123. Left sliding plate; 3124. Upper left support; 3125. Lower left support; 313. Distance pointer; 314. Swing angle pointer; 32. Right swing device; 321. Driven gear assembly; 3211. Driven gear component; 3212. Driven gear box; 3213. Right servo motor; 3214. First driven shaft; 3215. Second driven shaft; 322. Right swing platform; 3221. Right swing plate; 3222. Right swing angle device; 3223. Right sliding plate; 3224. Upper right support; 3225. Lower right support; 323. Distance pointer; 324. Swing angle pointer; 4. Lifting device; 41. Lifting oil cylinder; 42. Lifting support; 43. Transmission device; 44. Sensor; 5. Fixture; 6. Air cooling system. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the figure, a constant velocity drive shaft periodic cyclic test bench includes an installation platform 1. The installation platform 1 can be a metal platform such as cast iron or cast steel. Preferably, a number of feet are installed at the bottom of the installation platform to ensure the flatness of the installation platform. A swing device 3, a lifting device 4, and a lateral distance adjustment device 2 are provided on the installation platform 1. The swing device 3 is used to simulate the turning state of the drive shaft; the lifting device 4 is used to simulate the installation state of the drive shaft in a real vehicle and the low-frequency road surface fluctuations; the lateral distance adjustment device 2 is used to adjust the position of the swing device 3 in the axial direction to meet the experimental requirements of drive shafts of different lengths; the swing device 3 includes a left swing device 31 and a right swing device 32 arranged on both sides of the lifting device 4. The lateral distance adjustment device 2 includes a left lateral distance adjustment device 21 and a right lateral distance adjustment device 22 arranged on both sides of the lifting device 4. The left swing device 31 is arranged on the left lateral distance adjustment device 21 and is connected thereto. The left lateral distance adjustment device 21 is used to adjust the axial distance between the left swing device 31 and the lifting device 4; the right swing device 32 is arranged on the right lateral distance adjustment device 22 and is connected thereto. The right lateral distance adjustment device 22 is used to adjust the axial distance between the right swing device 32 and the lifting device 4. The left swing device 31 includes a loading gear assembly 311, and the right swing device 32 includes a driven gear assembly 321. Fixtures 5 are connected to the loading gear assembly 311, the driven gear assembly 321, and the lifting device 4. The fixture 5 on the lifting device 4 is connected to the fixtures 5 on the loading gear assembly 311 and the driven gear assembly 321 through a constant velocity drive shaft.

[0028] In practical applications, the left swing device 31 further includes a left swing platform 312 disposed on the mounting platform 1. The loading gear assembly 311 is arranged on the left swing platform 312. The loading gear assembly 311 includes a loading gear housing 3113 arranged on the left swing platform 312. An active speed shaft 3115 and a driven speed shaft 3116 are arranged inside the loading gear housing 3113. A swing loading cylinder 3112 is sleeved on the active speed shaft 3115, and a loading gear assembly 3111 is sleeved on the driven speed shaft 3116. The swing loading cylinder 3112 is meshed and connected with the loading gear assembly 3111. The loading gear assembly 3111 is connected to the loading gear housing 3113. A left servo motor 3114 is fixedly installed on the loading gear housing 3113. The left servo motor 3114 is connected to the loading gear assembly 3111 through a belt. The left swing platform 312 is connected to the left lateral distance adjustment device 21. Clamps 5 are arranged at one end of the active speed shaft 3115 and the driven speed shaft 3116 close to the lifting device 4. The swing loading cylinder 3112 and the left servo motor 3114 drive the loading gear assembly 3111 to rotate, thereby driving the active speed shaft 3115 and the driven speed shaft 3116 to rotate synchronously, realizing the rotation of the constant-speed drive shaft. The left servo motor 3114 is used to compensate for and transmit the power reduced due to efficiency loss.

[0029] In practical applications, the right swing device 32 includes a right swing platform 322 disposed on the mounting platform 1. The driven gear assembly 321 is arranged on the right swing platform 322. The driven gear assembly 321 includes a driven gear housing 3212 arranged on the right swing platform 322. A first driven shaft 3214 and a second driven shaft 3215 are arranged inside the driven gear housing 3212. A driven gear assembly 3211 is sleeved on the first driven shaft 3214 and the second driven shaft 3215. A right servo motor 3213 is fixedly installed on the driven gear housing 3212. The right servo motor 3213 is connected to the driven gear assembly 3211. The right swing platform 322 is connected to the right lateral distance adjustment device 22. Clamps 5 are arranged at one end of the first driven shaft 3214 and the second driven shaft 3215 close to the lifting device 4.

[0030] The right servo motor 3213 drives the loading gear assembly 3111 to rotate, thereby driving the active speed shaft 3115 and the driven speed shaft 3116 to rotate synchronously, realizing the rotation of the constant-speed drive shaft. The right servo motor 3213 is used to compensate for and transmit the power reduced due to efficiency loss.

[0031] In practical applications, the left swing platform 312 includes a left swing plate 3121 connected to the loading gear box body 3113, and a left sliding plate 3123 mounted on the mounting platform 1. A left swing angle device 3122 is provided between the left swing plate 3121 and the left sliding plate 3123, that is, the left swing angle device 3122 is mounted on the left sliding plate 3123. A lower left support 3125 is fixedly mounted on the left sliding plate 3123, and an upper left support 3124 is provided on the bottom surface of the left swing plate 3121. The upper left support 3124 and the lower left support 3125 are connected by an oil cylinder, and the left swing plate 3121 swings under the drive of the oil cylinder; preferably, an encoder is provided in the left swing angle device 3122 for detecting changes in swing angle, swing position, swing speed or acceleration, etc.

[0032] In practical applications, the right swing platform 322 includes a right swing plate 3221 connected to the driven gear box body 3212, and a right sliding plate 3223 mounted on the mounting platform 1. A right swing angle device 3222 is provided between the right swing plate 3221 and the right sliding plate 3223. A lower right support 3225 is fixedly mounted on the right sliding plate 3223, and an upper right support 3224 is provided on the bottom surface of the right swing plate 3221. The upper right support 3224 and the lower right support 3225 are connected by an oil cylinder, and the right swing plate 3221 swings under the drive of the oil cylinder; preferably, an encoder is provided in the right swing angle device 3222 for detecting changes in swing angle, swing position, swing speed or acceleration, etc.

[0033] In practical applications, for the convenience of initial position setting, distance pointers 313, 323 and swing angle pointers 314, 324 are provided on both the left swing device 31 and the right swing device 32. The distance pointers 313, 323 are preferably respectively provided on the left sliding plate 3123 and the right sliding plate 3223, and the swing angle pointers 314, 324 are preferably respectively provided on the left swing plate 3121 and the right swing plate 3221.

[0034] In practical applications, the installation platform 1 is provided with sliding rails 11. Both the left lateral distance adjustment device 21 and the right lateral distance adjustment device 22 include lead screws 211, 221 arranged in the sliding rails 11. Guide seats 212, 222 and nut seats 214, 224 are sleeved on the lead screws 211, 221 respectively. Preferably, the guide seats 212, 222 are arranged below the left swing angle device 3122 and the right swing angle device 3222. One end of each of the lead screws 211, 221 is connected to the output shaft of a motor 213, 223. The motors 213, 223 are fixedly installed at both ends of the installation platform 1. The nut seats 214, 224 are respectively connected to the left swing platform 312 and the right swing platform 322, that is, the nut seat 214 is connected to the left sliding plate 3123 and the nut seat 224 is connected to the right sliding plate 3223. By driving the rotation of the lead screws by the motors, the horizontal movement of the left swing platform 312 and the right swing platform 322 is realized. Technicians can quickly determine the positions of the left swing platform 312 and the right swing platform 322 according to the distance pointers 313, 323.

[0035] In practical applications, the lifting device 4 includes a lifting support 42 arranged on the installation platform 1. A transmission device 43 is arranged inside the lifting support 42. A lifting oil cylinder 41 is connected to the top of the transmission device 43. The transmission device 43 is provided with a number of the clamps 5. Specifically, the number of the clamps 5 is set in one-to-one correspondence with the clamps 5 on the left swing device 31 and the right swing device 32. A number of sensors 44 are arranged on the transmission device 43. The sensors 44 are connected to the clamps 5. Preferably, the number of the sensors 44 is set in one-to-one correspondence with the clamps 5.

[0036] Advantages of this embodiment: By the mutual cooperation of the lifting device and the swing device, the lifting device can provide a moving angle in the vertical direction for the constant velocity drive shaft, and the swing device can provide a swinging angle in the horizontal direction for the constant velocity drive shaft. The swing loading cylinder provides a torque loading for the driving speed shaft. The loading gear assembly, the driving speed shaft and the driven speed shaft drive the constant velocity drive shaft to rotate at a set speed, so as to simulate various situations encountered by an automobile during actual driving, and conduct a cyclic fatigue life test on the constant velocity drive shaft under this simulated actual vehicle working condition. Through the lateral distance adjustment device, cyclic fatigue life tests can be carried out on constant velocity drive shafts of different lengths, thus significantly enhancing the applicability and flexibility of the test bench. Through the setting of the swing platform, and an encoder is arranged inside the swing platform to monitor the changes of parameters such as the swing angle, swing position, swing speed or acceleration, etc., the swing angle and swing speed can be accurately detected, ensuring the accuracy and reliability of the measurement results.

[0037] Preferred Embodiment 2

[0038] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , an isokinetic drive shaft periodic cycle test bench includes an installation platform 1. The installation platform can be a metal platform such as cast iron or cast steel. A swing device 3, a lifting device 4, and a lateral distance adjustment device 2 are arranged on the installation platform 1. The swing device 3 is used to simulate the turning state of the drive shaft; the lifting device 4 is used to simulate the installation state of the drive shaft in a real vehicle and the low-frequency road surface fluctuations; the lateral distance adjustment device 2 is used to adjust the position of the swing device 3 in the axial direction to meet the experimental requirements of drive shafts of different lengths; the swing device 3 includes a left swing device 31 and a right swing device 32 arranged on both sides of the lifting device 4. The lateral distance adjustment device 2 includes a left lateral distance adjustment device 21 and a right lateral distance adjustment device 22 arranged on both sides of the lifting device 4. The left swing device 31 is arranged on the left lateral distance adjustment device 21 and is connected thereto. The left lateral distance adjustment device 21 is used to adjust the axial distance between the left swing device 31 and the lifting device 4; the right swing device 32 is arranged on the right lateral distance adjustment device 22 and is connected thereto. The right lateral distance adjustment device 22 is used to adjust the axial distance between the right swing device 32 and the lifting device 4. The left swing device 31 includes a loading gear assembly 311, and the right swing device 32 includes a driven gear assembly 321. Fixtures 5 are connected to the loading gear assembly 311, the driven gear assembly 321, and the lifting device 4. The fixture 5 on the lifting device 4 is connected to the fixtures 5 on the loading gear assembly 311 and the driven gear assembly 321 through an isokinetic drive shaft.

[0039] In practical applications, the left swing device 31 further includes a left swing platform 312 disposed on the mounting platform 1. The loading gear assembly 311 is arranged on the left swing platform 312. The loading gear assembly 311 includes a loading gear box body 3113 arranged on the left swing platform 312. The loading gear box body 3113 is penetrated by a driving speed shaft 3115 and a driven speed shaft 3116. A swing loading cylinder 3112 is sleeved on the driving speed shaft 3115, and a loading gear assembly 3111 is sleeved on the driven speed shaft 3116. The swing loading cylinder 3112 is meshed and connected with the loading gear assembly 3111. The loading gear assembly 3111 is connected to the loading gear box body 3113. A left servo motor 3114 is fixedly installed on the loading gear box body 3113. The left servo motor 3114 is connected to the loading gear assembly 3111 through a belt. The left swing platform 312 is connected to the left lateral distance adjustment device 21. Clamps 5 are arranged at one end of the driving speed shaft 3115 and the driven speed shaft 3116 close to the lifting device 4. The swing loading cylinder 3112 and the left servo motor 3114 drive the loading gear assembly 3111 to rotate, thereby driving the driven speed shaft 3115 and the driving speed shaft 3116 to rotate synchronously, realizing the rotation of the constant-speed drive shaft. The left servo motor 3114 is used to compensate for and transmit the power reduced due to efficiency loss.

[0040] In practical applications, the right swing device 32 includes a right swing platform 322 disposed on the mounting platform 1. The driven gear assembly 321 is arranged on the right swing platform 322. The driven gear assembly 321 includes a driven gear box body 3212 arranged on the right swing platform 322. A first driven shaft 3214 and a second driven shaft 3215 are penetrated in the driven gear box body 3212. A driven gear assembly 3211 is sleeved on the first driven shaft 3214 and the second driven shaft 3215. A right servo motor 3213 is fixedly installed on the driven gear box body 3212. The right servo motor 3213 is connected to the driven gear assembly 3211. The right swing platform 322 is connected to the right lateral distance adjustment device 22. Clamps 5 are arranged at one end of the first driven shaft 3214 and the second driven shaft 3215 close to the lifting device 4.

[0041] The right servo motor 3213 drives the loading gear assembly 3111 to rotate, thereby driving the driving speed shaft 3115 and the driven speed shaft 3116 to rotate synchronously, realizing the rotation of the constant-speed drive shaft. The right servo motor 3213 is used to compensate for and transmit the power reduced due to efficiency loss.

[0042] In practical applications, the left swing platform 312 includes a left swing plate 3121 connected to the loading gear box body 3113, and a left sliding plate 3123 mounted on the mounting platform 1. A left swing angle device 3122 is provided between the left swing plate 3121 and the left sliding plate 3123, that is, the left swing angle device 3122 is mounted on the left sliding plate 3123. A lower left support 3125 is fixedly mounted on the left sliding plate 3123, and an upper left support 3124 is provided on the bottom surface of the left swing plate 3121. The upper left support 3124 and the lower left support 3125 are connected by an oil cylinder, and the left swing plate 3121 swings under the drive of the oil cylinder; preferably, an encoder is provided in the left swing angle device 3122 for detecting changes in the swing angle, swing position, swing speed or acceleration, etc.

[0043] In practical applications, the right swing platform 322 includes a right swing plate 3221 connected to the driven gear box body 3212, and a right sliding plate 3223 mounted on the mounting platform 1. A right swing angle device 3222 is provided between the right swing plate 3221 and the right sliding plate 3223. A lower right support 3225 is fixedly mounted on the right sliding plate 3223, and an upper right support 3224 is provided on the bottom surface of the right swing plate 3221. The upper right support 3224 and the lower right support 3225 are connected by an oil cylinder, and the right swing plate 3221 swings under the drive of the oil cylinder; preferably, an encoder is provided in the right swing angle device 3222 for detecting changes in the swing angle, swing position, swing speed or acceleration, etc.

[0044] In practical applications, for the convenience of setting the initial position, distance pointers 313, 323 and swing angle pointers 314, 324 are provided on both the left swing device 31 and the right swing device 32. The distance pointers 313, 323 are preferably respectively provided on the left sliding plate 3123 and the right sliding plate 3223, and the swing angle pointers 314, 324 are preferably respectively provided on the left swing plate 3121 and the right swing plate 3221.

[0045] In practical applications, the installation platform 1 is provided with sliding rails 11. Both the left lateral distance adjustment device 21 and the right lateral distance adjustment device 22 include lead screws 211, 221 arranged in the sliding rails 11. Guide seats 212, 222 and nut seats 214, 224 are sleeved on the lead screws 211, 221 respectively. Preferably, the guide seats 212, 222 are arranged below the left swing angle device 3122 and the right swing angle device 3222. One end of each of the lead screws 211, 221 is connected to the output shafts of motors 213, 223. The motors 213, 223 are fixedly installed at both ends of the installation platform 1. The nut seats 214, 224 are respectively connected to the left swing platform 312 and the right swing platform 322, that is, the nut seat 214 is connected to the left sliding plate 3123, and the nut seat 224 is connected to the right sliding plate 3223. By driving the rotation of the lead screws by the motors, the horizontal movement of the left swing platform 312 and the right swing platform 322 is realized. Technicians can quickly determine the positions of the left swing platform 312 and the right swing platform 322 according to the distance pointers 313, 323.

[0046] In practical applications, the lifting device 4 includes a lifting support 42 arranged on the installation platform 1. A transmission device 43 is arranged inside the lifting support 42. A lifting oil cylinder 41 is connected to the top of the transmission device 43. The transmission device 43 is provided with a number of the clamps 5. Specifically, the number of the clamps 5 is set in one-to-one correspondence with the clamps 5 on the left swing device 31 and the right swing device 32. A number of sensors 44 are arranged on the transmission device 43. The sensors 44 are connected to the clamps 5. Preferably, the number of the sensors 44 is set in one-to-one correspondence with the clamps 5.

[0047] In practical applications, the constant velocity drive shaft periodic cycle test bench further includes an oil supply station. The oil supply station is connected to the constant velocity drive shaft periodic cycle test bench through an oil pipeline. The oil pipeline preferably adopts a high-pressure rubber hose. The oil supply station is used to provide an oil source for the oil cylinders.

[0048] In practical applications, the constant velocity drive shaft periodic cycle test bench further includes an air-cooling system 6. The air-cooling system 6 is connected to the constant velocity drive shaft periodic cycle test bench through a pipeline. The air-cooling system 6 is used to cool the outer surfaces of the inner and outer ball cages of the drive shaft rotating at high speed. The wind blows to the outer surfaces of the inner and outer ball cages of the drive shaft at a wind speed of 12 - 80 m / s. In addition, temperature sensors are equipped to detect the outer surface temperatures of the inner and outer ball cages. When the outer surface temperatures of the inner and outer ball cages are higher than the set temperature, the system will automatically alarm and stop the test process.

[0049] Advantages of this embodiment: By the mutual cooperation of the lifting device and the swinging device, the lifting device can provide a moving angle in the vertical direction for the constant velocity drive shaft, and the swinging device can provide a swinging angle in the horizontal direction for the constant velocity drive shaft. The swinging loading cylinder provides a torque load for the driving rotation shaft. The loading gear assembly, the driving rotation shaft, and the driven rotation shaft drive the constant velocity drive shaft to rotate at a set speed, thereby simulating various situations encountered by an automobile during actual driving, and conducting a cyclic fatigue life test on the constant velocity drive shaft under this simulated actual vehicle working condition; through the lateral distance adjustment device, cyclic fatigue life tests can be carried out on constant velocity drive shafts of different lengths, thereby significantly enhancing the applicability and flexibility of the test bench. Through the setting of the swinging platform, and an encoder is arranged inside the swinging platform to monitor changes in parameters such as the swinging angle, swinging position, swinging speed, or acceleration, precise detection of the swinging angle and swinging speed, etc., can be performed, ensuring the accuracy and reliability of the measurement results; through the setting of the oil supply station, an oil source can be provided for the oil cylinder, ensuring the stability of the oil source; through the setting of the air cooling system, the temperature of the drive shaft is prevented from being too high, affecting the service life of the drive shaft and thus affecting the accuracy of the test.

[0050] Advantages of the implementation of the present utility model: By the mutual cooperation of the lifting device and the swinging device, the lifting device can provide a moving angle in the vertical direction for the constant velocity drive shaft, and the swinging device can provide a swinging angle in the horizontal direction for the constant velocity drive shaft. The swinging loading cylinder provides a torque load for the driving rotation shaft. The loading gear assembly, the driving rotation shaft, and the driven rotation shaft drive the constant velocity drive shaft to rotate at a set speed, thereby simulating various situations encountered by an automobile during actual driving, and conducting a cyclic fatigue life test on the constant velocity drive shaft under this simulated actual vehicle working condition; through the lateral distance adjustment device, cyclic fatigue life tests can be carried out on constant velocity drive shafts of different lengths, thereby significantly enhancing the applicability and flexibility of the test bench. Through the setting of the swinging platform, and an encoder is arranged inside the swinging platform to monitor changes in parameters such as the swinging angle, swinging position, swinging speed, or acceleration, precise detection of the swinging angle and swinging speed, etc., can be performed, ensuring the accuracy and reliability of the measurement results; through the setting of the oil supply station, an oil source can be provided for the oil cylinder, ensuring the stability of the oil source; through the setting of the air cooling system, the temperature of the drive shaft is prevented from being too high, affecting the service life of the drive shaft and thus affecting the accuracy of the test. The cyclic fatigue test bench for the constant velocity drive shaft described in the present utility model has a compact and reasonable structure, occupies a small area, and is at the same time convenient and flexible to operate, can simulate the cyclic fatigue life test under actual vehicle working conditions, and ensures the accuracy and reliability of the test results.

[0051] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A constant speed drive shaft cycle test bench, comprising a mounting platform (1), a swing device (3) and a lifting device (4) arranged on the mounting platform (1), characterized in that: The invention also comprises a lateral distance adjustment device (2) arranged on the installation platform (1); the swing device (3) comprises a left swing device (31) and a right swing device (32) arranged on both sides of the lifting device (4); the lateral distance adjustment device (2) comprises a left lateral distance adjustment device (21) and a right lateral distance adjustment device (22) arranged on both sides of the lifting device (4); the left lateral distance adjustment device (21) is connected to the left swing device (31); the right lateral distance adjustment device (22) is connected to the left swing device (31); The device (22) is connected to the right swing device (32), the left swing device (31) includes a loading gear assembly (311), the right swing device (32) includes a driven gear assembly (321), the loading gear assembly (311), the driven gear assembly (321) and the lifting device (4) are all connected with a clamp (5), and the clamp on the lifting device (4) is connected to the loading gear assembly (311) and the clamp (5) on the driven gear assembly (321) through a constant speed drive shaft.

2. The constant speed drive shaft cycle test bench according to claim 1 is characterized in that: The left swing device (31) further comprises a left swing platform (312) arranged on the mounting platform (1); the loading gear assembly (311) is arranged on the left swing platform (312); the loading gear assembly (311) comprises a loading gear housing (3113) arranged on the left swing platform (312); a driving speed shaft (3115) and a driven speed shaft (3116) are arranged through the loading gear housing (3113); a swing loading cylinder (3112) is sleeved on the driving speed shaft (3115); and a loading gear assembly (3111) is sleeved on the driven speed shaft (3116). 11), the swing loading cylinder (3112) is meshedly connected with the loading gear assembly (3111), the loading gear assembly (3111) is connected with the loading gear housing (3113), a left servo motor (3114) is fixedly mounted on the loading gear housing (3113), the left servo motor (3114) is connected with the loading gear assembly (3111), the left swing platform (312) is connected with the left lateral distance adjustment device (21), and a clamp (5) is provided at one end of the active speed shaft (3115) and the driven speed shaft (3116) close to the lifting device (4).

3. The constant speed drive shaft cycle test bench according to claim 2 is characterized in that: The left swing platform (312) comprises a left sliding plate (3123) mounted on the mounting platform (1); a left swing angle device (3122) is arranged on the left sliding plate (3123); a left swing angle device (3122) is connected to a left swing plate (3121); the loading gear housing (3113) is arranged on the left swing plate (3121); a left lower support (3125) is fixedly mounted on the left sliding plate (3123); a left upper support (3124) is arranged on the bottom surface of the left swing plate (3121); and the left upper support (3124) and the left lower support (3125) are connected via an oil cylinder.

4. The constant speed drive shaft cycle test bench according to claim 1 is characterized in that: The right swing device (32) further comprises a right swing platform (322) arranged on the mounting platform (1); the driven gear assembly (321) is arranged on the right swing platform (322); the driven gear assembly (321) comprises a driven gear housing (3212) arranged on the right swing platform (322); a first driven shaft (3214) and a second driven shaft (3215) are arranged through the driven gear housing (3212); the first driven shaft (3214) and the second driven shaft (3215) are arranged A driven gear assembly (3211) is sleeved on the second driven shaft (3215), a right servo motor (3213) is fixedly mounted on the driven gear housing (3212), the right servo motor (3213) is connected to the driven gear assembly (3211), the right swing platform (322) is connected to the right lateral distance adjustment device (22), and a clamp (5) is provided at one end of the first driven shaft (3214) and the second driven shaft (3215) close to the lifting device (4).

5. The constant speed drive shaft cycle test bench according to claim 4 is characterized in that: The right swing platform (322) comprises a right sliding plate (3223) mounted on the mounting platform (1); a right swing angle device (3222) is arranged on the right sliding plate (3223); the right swing angle device (3222) is connected to a right swing plate (3221); the driven gear housing (3212) is arranged on the right swing plate (3221); a right lower support (3225) is fixedly mounted on the right sliding plate (3223); a right upper support (3224) is arranged on the bottom surface of the right swing plate (3221); the right upper support (3224) and the right lower support (3225) are connected via an oil cylinder.

6. The constant speed drive shaft cycle test bench according to claim 1, characterized in that: The left swing device (31) and the right swing device (32) are both provided with distance pointers (313, 323) and swing angle pointers (314, 324).

7. The constant speed drive shaft cycle test bench according to claim 1 is characterized in that: The installation platform (1) is provided with a sliding track (11); the left lateral distance adjustment device (21) and the right lateral distance adjustment device (22) both comprise screw rods (211, 221) arranged in the sliding track (11); guide seats (212, 222) and nut seats (214, 224) are sleeved on the screw rods (211, 221); one end of the screw rods (211, 221) is connected to an output shaft of a motor (213, 223); the motors (213, 223) are fixedly mounted at both ends of the installation platform (1); and the nut seats (214, 224) are respectively connected to the left swing device (31) and the right swing device (32).

8. The constant speed drive shaft cycle test bench according to claim 1 is characterized in that: The lifting device (4) comprises a lifting support (42) arranged on the installation platform (1), a transmission device (43) is arranged inside the lifting support (42), a lifting cylinder (41) is connected to the top of the transmission device (43), the transmission device (43) is provided with a plurality of the clamps (5), and a plurality of sensors (44) are arranged on the transmission device (43), and the sensors (44) are connected to the clamps (5).

9. The constant speed drive shaft cycle test bench according to claim 1, characterized in that: It also includes an oil supply station, which is connected to the constant speed drive shaft periodic cycle test bench through an oil pipeline.

10. The constant speed drive shaft cycle test bench according to claim 1, characterized in that: It also includes an air cooling system (6), which is connected to the constant speed drive shaft periodic cycle test bench through a pipeline.

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