Bearing accelerated life comprehensive test platform

Abstract

The invention relates to the technical field of bearing life testing, in particular to a bearing accelerated life comprehensive testing platform which comprises a working table, a transmission mechanism and a clamping mechanism, a top plate is fixedly installed at the upper end of the working table through a supporting rod, and a power mechanism is arranged in the middle of the top plate. A plurality of acceleration mechanisms which are circumferentially and uniformly distributed and meshed with the power mechanism are arranged on the peripheral side of the power mechanism, the clamping mechanisms are arranged on the upper surface of the workbench, the positions and the number of the clamping mechanisms correspond to those of the acceleration mechanisms, and force application mechanisms are arranged at the upper end of the workbench and correspond to the clamping mechanisms; the acceleration mechanism is linked with the transmission mechanism to push the force application mechanism to apply periodic radial force to the bearing fixed in the clamping mechanism during rotation test. Through the synergistic effect of the transmission mechanism and the force application mechanism and in combination with the rebound design of the torsional spring, periodic radial force can be applied to the bearing, the stress condition of the bearing in actual application can be simulated, the test result is closer to the actual application condition, and the test accuracy and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing life testing, and in particular to a comprehensive bearing accelerated life testing platform. Background Art

[0002] As a key component in the mechanical transmission system, the life and reliability of the bearing directly affect the overall performance of the equipment. Traditional bearing life test platforms mostly use simulation tests under constant load conditions, which often cannot fully reflect the complex and changeable working conditions that bearings are subjected to in actual applications, especially in working scenarios that need to withstand periodic radial forces, such as reciprocating motion mechanisms, gearboxes, reducers, etc. The life of the bearing is significantly affected by periodic radial impact forces.

[0003] After searching, Chinese patent CN222166561U discloses a bearing fatigue life tester, including a bottom plate, a bracket fixedly connected to the top of the bottom plate, a driving mechanism arranged on the top of the bracket, the driving mechanism including a cylinder located at the top of the bracket, a motor connected to the telescopic end of the cylinder, a top seat connected to the output end of the motor, a base rotatably connected to the top of the bottom plate, a bearing to be tested is sleeved on the base, and an application mechanism is connected to both sides of the bracket. The technical solution of the above patent enables the equipment to adapt to bearing tests of different specifications through the application mechanism, and through the cooperation of the friction plate and the threaded rod, the force applied to the outer ring of the bearing can be accurately adjusted to simulate different working conditions.

[0004] The pressure generated by the applying mechanism in the technical solution of the above patent is a constant load, which cannot simulate the specific working conditions when the bearing is subjected to periodic radial force in actual application, resulting in a large deviation between the test results and the actual application situation. Based on this, the present invention provides a comprehensive bearing accelerated life test platform that can simulate the periodic radial force under actual working conditions, thereby improving the accuracy of bearing testing. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a bearing accelerated life comprehensive test platform, including a workbench, a transmission mechanism, a force application mechanism, and a clamping mechanism; The top plate is fixedly mounted on the upper end of the workbench through a support rod, a power mechanism is arranged in the middle of the top plate, and a plurality of acceleration mechanisms are arranged on the circumference of the power mechanism and are evenly distributed and meshed with the power mechanism; The clamping mechanism is arranged on the upper surface of the workbench and its position and number correspond to the acceleration mechanism, and a force applying mechanism is arranged on the upper surface of the workbench corresponding to each clamping mechanism; The acceleration mechanism is linked with the transmission mechanism installed on the top plate to push the force-applying mechanism to apply a periodic radial force to the bearing fixed in the clamping mechanism during the rotation test; The transmission mechanism includes a pushing component, a contact component and a pressing component. The pushing component engages the acceleration mechanism and periodically presses the contact component to tilt outward. The pressing component is driven by the contact component to periodically rotate and press the force-applying mechanism.

[0006] Preferably: the power mechanism includes a power shaft, the bottom of the power shaft is embedded in the inner wall of the top plate and rotatably connected thereto, the top of the power shaft is connected to the output shaft of the power motor, and a main gear is provided at the bottom of the power shaft, which meshes with the acceleration mechanism.

[0007] Preferably: the acceleration mechanism includes a rotating shaft, which is installed in the inner wall of the top plate, the upper end of the rotating shaft extends above the top plate and is provided with a slave gear meshing with the main gear, the lower end of the rotating shaft is provided with a hydraulic rod, and the bottom of the hydraulic rod is equipped with a clamping claw.

[0008] Preferably: the bottom of the pushing component is embedded in the top plate and rotatably connected thereto, the contact component is located on the top of the pressing component, and the pressing component is rotatably connected to the inner wall of the top plate; The pushing assembly comprises a transmission shaft, the bottom of which is rotatably connected with the top plate, a transmission gear meshing with the slave gear is installed on the transmission shaft, and a cam is arranged on the top of the transmission shaft.

[0009] Preferably: the contact assembly includes an outer frame and a contact plate. The outer frame is fixed on the top of the pressing assembly, and an adjusting motor is installed inside the outer frame through a motor frame. The adjusting motor is a dual-axis motor and is installed with two screw rods. Two contact plates are provided, which are located inside the outer frame and are slidably connected to the outer frame.

[0010] Preferably, the screw rod extends to the inside of the contact plate, limit blocks are arranged on the upper and lower sides of the inner wall of the outer frame, limit grooves are arranged on the upper and lower sides of the contact plate, the limit blocks are located in the limit grooves, and the two are slidably connected.

[0011] Preferably: the pressing assembly includes an axle seat, the top of which is fixed to the outer frame, the axle seat is installed in a side groove opened in the top plate, and both side walls of the axle seat corresponding to the side groove are provided with shaft rods, which are located in inner grooves opened in the side walls of the side grooves.

[0012] Preferably, the end of the shaft rod is rotatably connected to the inner groove, a torsion spring is sleeved on the shaft rod, a stop rod is provided at the bottom of the shaft seat, a stop head is provided at the bottom of the stop rod, and the stop head is a spherical structure with a smooth surface.

[0013] Preferably: the force-applying mechanism includes a slider, a push rod, and an inclined block. The slider is located in a slide groove opened on the upper surface of the workbench. A cavity is provided at one end of the slider close to the bearing. A spring is installed in the cavity. One end of the spring is connected to the side wall of the slide groove. A connecting plate located on the upper surface of the workbench is provided on the side of the slider close to the abutment. The connecting plate is slidably connected to the workbench. An inclined block is provided on the connecting plate, and the inclined block abuts against the abutment.

[0014] Preferably, a fixing plate is provided at the upper end of the slider, the top rod is an elastic rod and a screw is provided at one end thereof away from the bearing, the screw is installed in a screw hole provided in the fixing plate, the two are threadedly connected, and nuts are provided on both sides of the fixing plate on the screw.

[0015] Technical effects and advantages of the present invention: 1. The present invention can apply periodic radial force to the bearing through the synergistic effect of the transmission mechanism and the force-applying mechanism, combined with the torsion spring rebound design, and can simulate the stress conditions of the bearing in actual applications, making the test results closer to the actual application conditions, thereby improving the accuracy and reliability of the test.

[0016] 2. The present invention can dynamically adjust the force applied by adjusting the motor-driven screw to change the contact plate spacing, quickly switch between different test conditions, and meet the test requirements for different types of bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 2 This is a front view of a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the partial structure of the upper surface of a workbench in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 4 It is a structural schematic diagram of a slideway in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 5 It is an exploded view of a force-applying mechanism in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 6 It is a structural schematic diagram of an acceleration mechanism in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 7 It is a structural schematic diagram of a transmission mechanism in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Figure 8 yes Figure 7 Exploded view of; Fig. 9 It is a partial exploded diagram of a transmission mechanism in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application; Fig.10 It is an exploded diagram of a contact component in a bearing accelerated life comprehensive test platform provided in an embodiment of the present application.

[0018] In the figure: 1. Workbench; 2. Top plate; 3. Power mechanism; 4. Acceleration mechanism; 5. Transmission mechanism; 6. Force-applying mechanism; 7. Clamping mechanism; 11. slideway; 21. side groove; 22. inner groove; 31. power motor; 32. power shaft; 33. main gear; 41. Rotating shaft; 42. Slave gear; 43. Hydraulic rod; 44. Clamping claw; 51. Pushing component; 52. Contacting component; 53. Pressing component; 511, transmission shaft; 512, transmission gear; 513, cam; 521, outer frame; 522, adjustment motor; 523, lead screw; 524, contact plate; 525, limit groove; 526, limit block; 531, shaft seat; 532, shaft rod; 533, torsion spring; 534, stop rod; 535, stop head; 61. Slider; 62. Spring; 63. Fixing plate; 64. Push rod; 65. Screw rod; 66. Nut; 67. Connecting plate; 68. Bevel block; 71. Micro cylinder; 72. Clamp. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0020] Embodiment:

[0021] See also Figures 1 to 10 In this embodiment, a comprehensive test platform for accelerated bearing life is provided. Figure 1 , Figure 2 As shown, the test platform includes a workbench 1, a top plate 2, a power mechanism 3, an acceleration mechanism 4, a transmission mechanism 5, a force-applying mechanism 6 and a clamping mechanism 7. A distribution box and other components are arranged inside the workbench 1. The existing circuit and control components are used to realize the automation and electrical connection of the test platform. A double-opening box door is arranged on the front side of the workbench 1 to facilitate the maintenance inside. At the same time, heat dissipation windows are arranged on the left and right sides of the workbench 1 to provide heat dissipation and cooling for the distribution box inside when it is working; The top plate 2 is fixedly mounted on the upper end of the workbench 1 through a support rod. In this embodiment, the top plate 2 is a circular structure, which occupies a small space and saves materials. In practical applications, it can also adopt a square or other polygonal structure, which only serves to install structural components. A power mechanism 3 is arranged in the middle of the top plate 2. The power mechanism 3 is the power output source during the bearing test. A plurality of acceleration mechanisms 4 are arranged on the circumferential side of the power mechanism 3. The acceleration mechanisms 4 are distributed in a circle on the outside of the power mechanism 3 and mesh with the power mechanism 3. The acceleration mechanisms 4 are uniformly driven by the power mechanism 3 to rotate on the top plate 2. After the acceleration mechanisms 4 are connected to the inner ring of the bearing, the inner ring of the bearing can be driven to rotate, thereby achieving the purpose of the test. like Figure 2 , Figure 3 As shown, the clamping mechanism 7 corresponds to the accelerating mechanism 4. The clamping mechanism 7 is arranged on the upper surface of the workbench 1. The position and quantity of the clamping mechanism 7 correspond to the accelerating mechanism 4. The clamping mechanism 7 realizes fixed positioning of the bearing to be tested. The bearing is placed on the upper surface of the workbench 1 and is located directly below the accelerating mechanism 4. During the test, the clamping mechanism 7 fixes the outer ring of the bearing, and the acceleration mechanism 4 can move downward and extend, and its bottom is inserted into the inner ring of the bearing and fixed thereto. Then, the power mechanism 3 is started, which drives multiple acceleration mechanisms 4 to rotate and accelerate at the same time, and then each acceleration mechanism 4 drives the inner ring of the bearing fixed thereto to rotate together, so that the inner ring and the outer ring of the bearing rotate relative to each other when the bearing is used. At the same time, multiple bearings can be tested at the same time, which increases the test efficiency; In the clamping mechanism 7, as Figure 3 As shown, it includes a micro cylinder 71 and a clamping plate 72. There are multiple micro cylinders 71. In this embodiment, there are three micro cylinders 71 in each clamping mechanism 7, which are fixed on the upper surface of the workbench 1 and are distributed at equal intervals on the circumference. A clamping plate 72 is installed on the piston rod of each micro cylinder 71. The three clamping plates 72 clamp and fix the bearing at the center thereof, and the three-point positioning has good stability. At the same time, the clamping plate 72 can be telescopically adjusted under the drive of the micro cylinder 71, thereby fixing bearings of different outer diameters, thereby improving its practicality. At the upper end of the workbench 1, corresponding to each tested bearing, the tested bearing and the clamping mechanism 7 are in one-to-one correspondence, that is, a force-applying mechanism 6 is provided at each clamping mechanism 7, and the force-applying mechanism 6 can apply radial force to the bearing when the acceleration mechanism 4 drives the inner ring of the bearing to rotate, and the radial force is an intermittent and variable force, thereby simulating the life of the bearing under the action of external force when rotating in an actual application scenario. The radial force is different from the fixed force on the existing test platform, and is aimed at the use of the bearing under the scenario of periodic force; For example, in a reciprocating mechanism, when the reciprocating motion of the piston is transmitted to the crankshaft through the connecting rod, a periodic radial impact force will be generated on the bearing; in addition, there will be periodic radial forces in gearboxes, reducers, and rack-and-pinion steering mechanisms, which are generated by the periodic changes in the tooth surface contact force when the gears are meshing; in belt or chain drive mechanisms, the bearings will also be subject to intermittent forces due to tension fluctuations caused by the meshing and separation process of the belt / chain and the pulley / sprocket; Combined with the above application scenarios, since there is no test platform that can realize simulation test for this actual scenario in the current life test of bearings, the present invention realizes the test effect through the intermittent and periodic force-applying mechanism 6, which is more suitable for the actual application conditions of bearings; In this embodiment, if Figure 1 , Figure 2 As shown, the force-applying mechanism 6 and the acceleration mechanism 4 are linked by a transmission mechanism 5, and the transmission mechanism 5 is arranged on the top plate 2. The rotation state of the acceleration mechanism 4 during operation is converted into a force-applying mechanism 6 through the transmission mechanism 5 so that the force-applying mechanism 6 periodically applies a force to the bearing; like Figure 1 As shown, the power mechanism 3 is meshed with the acceleration mechanism 4, and the power mechanism 3 includes a power shaft 32. The bottom of the power shaft 32 is embedded in the inner wall of the top plate 2 and is rotatably connected thereto. The top of the power shaft 32 is connected to the output shaft of the power motor 31. The power motor 31 is fixed on a bracket, and the bracket is installed on the top plate 2. A main gear 33 is provided at the lower part of the power shaft 32. The main gear 33 meshes with the acceleration mechanism 4. After the power motor 31 is started, it can drive the power shaft 32 to rotate. The rotation of the power shaft 32 can rotate the main gear 33, and then the main gear 33 meshes with the acceleration mechanism 4 to rotate it. like Figure 6 As shown, the acceleration mechanism 4 includes a rotating shaft 41, which is installed in the inner wall of the top plate 2. The upper end of the rotating shaft 41 extends above the top plate 2 and is provided with a slave gear 42 meshing with the main gear 33. A hydraulic rod 43 is provided at the lower end of the rotating shaft 41, and a clamping claw 44 is installed at the bottom of the hydraulic rod 43. The clamping claw 44 is a retractable design, adopting the clamping claw structure of the prior art, wherein the claw teeth can be extended or contracted. Initially, it is in a contracted state, and then extends after the clamping claw 44 is inserted into the inner ring of the bearing. During the extension process, it will conflict with the inner ring of the bearing, that is, it is in a state of contraction. Until they are fixed to each other, if the bearing needs to be removed after the test, the claws can be retracted. When the clamping jaws 44 and the inner ring of the bearing are fixed, the slave gear 42 rotates under the drive of the main gear 33, and then drives the rotating shaft 41 to rotate together, so that the hydraulic rod 43 and the clamping jaws 44 at the bottom of the rotating shaft 41 rotate together, so that the inner ring of the bearing can rotate with the clamping jaws 44. At this time, the outer ring of the bearing is fixed by the clamping mechanism 7, so that the two rotate with each other, so as to simulate the use of the bearing and realize the accelerated test experiment of the bearing life; like Figure 1 , Figure 7 and Figure 8 As shown, the slave gear 42 in the acceleration mechanism 4 meshes with the transmission mechanism 5, and the transmission mechanism 5 includes a pushing component 51, a contact component 52 and a pressing component 53, wherein the pushing component 51 meshes with the slave gear 42, and after the pushing component 51 rotates, it presses the contact component 52, so that it drives the pressing component 53 to rotate in the inner wall of the top plate 2, and then through the principle of the lever type, the pressing mechanism 6 applies periodic pressure to the bearing; The bottom of the pushing component 51 is embedded in the top plate 2 and is rotatably connected thereto, and when it rotates, it can press the contact component 52 and tilt it away from the center of the top plate 2. The contact component 52 is located on the top of the pressing component 53, and the two are fixedly connected, while the pressing component 53 is rotatably connected to the inner wall of the top plate 2. The pushing component 51 includes a transmission shaft 511, the bottom of which is rotatably connected to the top plate 2, on which a transmission gear 512 meshing with the slave gear 42 is installed, and a cam 513 is arranged on the top of the transmission shaft 511. The transmission gear 512 meshes with the slave gear 42, and when it rotates, it can drive the transmission shaft 511 to rotate, and the transmission shaft 511 will drive the cam 513 to rotate. The protruding part of the cam 513 will squeeze the contact component 52 when it is connected with the contact component 52, and the contact component 52 will deviate to the outside, thereby driving the bottom The pressing component 53 at the bottom rotates, and its bottom rotates to squeeze the force-applying mechanism 6 to complete the force-applying effect on the bearing. Due to the structure of the cam 513, when the transmission shaft 511 rotates all the time, the cam 513 will only contact the contact component 52 for a part of the time when it rotates one circle, thereby forming a periodic and intermittent force. At the same time, the pressing component 53 has a rebound force. When the cam 513 is not squeezed with the contact component 52, the contact component 52 and the pressing component 53 can be restored to their original state by the action of their own torsion spring 533, and the cycle continues. like Fig.10 As shown, the contact assembly 52 includes an outer frame 521 and a contact plate 524. The outer frame 521 is fixed on the top of the pressing assembly 53, and an adjusting motor 522 is installed inside the outer frame 521 through a motor frame. The adjusting motor 522 is a small dual-axis motor, and two screw rods 523 are installed on the motor. Two contact plates 524 are provided, which are located in the outer frame 521 and slidably connected thereto. The ends of the contact plates 524 are rounded to avoid large friction when contacting with the cam 513. The contact plates 524 are provided to be two symmetrical about the center of the outer frame 521, and the purpose is to keep the horizontal force balance of the entire transmission mechanism 5 in a vertical state. The lead screw 523 extends to the inside of the contact plate 524. After the adjusting motor 522 is started, it will drive the lead screw 523 to rotate, so that the contact plate 524 will move away from or close to the adjusting motor 522 in the outer frame 521. In this way, the initial distance between the contact plate 524 and the cam 513 will change. Then, when the same cam 513 rotates, it presses the contact plate 524 to move the outer frame 521 by a different distance, which will cause the pressure component 53 at the bottom of the outer frame 521 to drive the force applying mechanism 6 to move by a different distance, thereby changing the magnitude of the applied force, providing a testing method for multiple scenarios. In addition, limit blocks 526 are provided on the upper and lower sides of the inner wall of the outer frame 521. Correspondingly, limit grooves 525 are provided on the upper and lower sides of the contact plate 524. The limit blocks 526 are located in the limit grooves 525. The two are slidably connected, and the two cooperate to prevent the contact plate 524 from sliding out of the outer frame 521. like Figure 8 , Fig. 9 As shown, the pressing assembly 53 includes a shaft seat 531, the top of the shaft seat 531 is fixed to the outer frame 521, the shaft seat 531 is installed in the side groove 21 opened in the top plate 2, and the two side walls of the shaft seat 531 corresponding to the side groove 21 are provided with shaft rods 532, the shaft rod 532 is located in the inner groove 22 opened in the side wall of the side groove 21, and the end of the shaft rod 532 is rotatably connected to the inner groove 22. At the same time, a torsion spring 533 is sleeved on the shaft rod 532, and the torsion spring 533 is initially in a compressed state. A push rod 534 is provided at the bottom of the shaft seat 531, and a push head 535 is provided at the bottom of the push rod 534. The push head 535 is a spherical structure with a smooth surface. After the outer frame 521 is squeezed outward, it drives the shaft seat 531 to move the shaft rod 532 is the axis rotation, at this time the torsion spring 533 will release part of the deformation force, the bottom push rod 534 will also rotate with the shaft 532 as the axis, and it will rotate toward the bearing side. Its rotation is blocked by the force-applying mechanism 6, and then the push head 535 will push the force-applying mechanism 6 to move toward the bearing side to generate a force on the bearing. At the same time, the push head 535 will slide with the force-applying mechanism 6. After the external force of the cam 513 disappears, the force-applying mechanism 6 rebounds, and its extrusion drives the push head 535 and the push rod 534 to return to their original state and act on the torsion spring 533 again, so that it generates new torsion, so that when there is no external force, the push rod 534 is in a balanced state relying on the torsion of the torsion spring 533 and the rebound force applied by the force-applying mechanism 6; like Figure 4 , Figure 5As shown, the force-applying mechanism 6 includes a slider 61, a push rod 64, and an inclined block 68. The slider 61 is located in a slide groove 11 provided on the upper surface of the workbench 1. The slider 61 slides in the slide groove 11. A cavity is provided at one end of the slider 61 close to the bearing. A spring 62 is installed in the cavity. One end of the spring 62 is connected to the side wall of the slide groove 11. The spring 62 exerts an extrusion force on the slider 61 toward the side of the butt 535. A connecting plate 67 located on the upper surface of the workbench 1 is provided on the side of the slider 61 close to the butt 535. The connecting plate 67 slides on the surface of the workbench 1. An inclined block 68 is provided on the connecting plate 67. The inclined block 68 abuts against the butt 535. Initially, the inclined block 68 moves toward the side of the butt 535 by relying on the thrust of the spring 62 on the slider 61, and then the two conflict with each other to form a balanced state without external force. A fixing plate 63 is provided at the upper end of the slider 61. The push rod 64 is an elastic rod and a screw 65 is provided at one end thereof away from the bearing. The screw 65 is installed in a screw hole provided in the fixing plate 63. The two are threadedly connected. In addition, nuts 66 are provided on both sides of the fixing plate 63 on the screw 65. Initially, the end of the push rod 64 is as far away from the bearing as possible to avoid affecting the installation of the bearing. After the bearing is fixed, the screw 65 is rotated and the push rod 64 is moved a distance so that its end is slightly in contact with the bearing. At this time, the two nuts 66 are tightened to interact with the fixing plate 63 to limit the push rod 64. The distance is adjustable, so that it can adapt to bearings of different specifications and outer diameters. During the test, the butt 535 squeezes the inclined block 68, and the inclined block 68 moves toward one side of the bearing, thereby driving the slider 61 to move and deform the spring 62. When the slider 61 moves, the push rod 64, which serves as an elastic rod, will support the bearing and the force generated by the elastic compression will squeeze the bearing. Conversely, after the force of the butt 535 disappears, the spring 62 pushes the slider 61 back to its original position. At the same time, the push rod 64 also relies on elasticity to return to its original position, and pushes the butt 535 back to its original position through the inclined block 68, so that the transmission mechanism 5 and the force-applying mechanism 6 are balanced again. Under the action of the rotation period of the cam 513, the transmission mechanism 5 periodically pushes the force-applying mechanism 6 to act on the bearing, thereby simulating the life test of the bearing under periodic force when in use.

[0022] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A bearing accelerated life comprehensive test platform, comprising a workbench (1), a transmission mechanism (5), a force application mechanism (6), and a clamping mechanism (7); A top plate (2) is fixedly mounted on the upper end of the workbench (1) via a support rod, a power mechanism (3) is arranged in the middle of the top plate (2), and a plurality of acceleration mechanisms (4) are arranged on the circumference of the power mechanism (3) and are evenly distributed in a circle and meshed with the power mechanism (3), wherein: The clamping mechanisms (7) are arranged on the upper surface of the workbench (1) and their positions and numbers correspond to the acceleration mechanisms (4). The upper end of the workbench (1) is provided with a force applying mechanism (6) corresponding to each clamping mechanism (7); The acceleration mechanism (4) is linked with the transmission mechanism (5) installed on the top plate (2) to push the force-applying mechanism (6) to apply a periodic radial force to the bearing fixed in the clamping mechanism (7) during the rotation test; The transmission mechanism (5) comprises a pushing component (51), a contact component (52) and a pressing component (53); the pushing component (51) engages with the acceleration mechanism (4) and periodically presses the contact component (52) to tilt outward; and the pressing component (53) is driven by the contact component (52) to periodically rotate and press the force-applying mechanism (6).

2. The bearing accelerated life comprehensive test platform according to claim 1 is characterized in that: The power mechanism (3) comprises a power shaft (32), the bottom of the power shaft (32) is embedded in the inner wall of the top plate (2) and is rotatably connected thereto, the top of the power shaft (32) is connected to the output shaft of the power motor (31), and a main gear (33) is provided at the bottom of the power shaft (32), and the main gear (33) is engaged with the acceleration mechanism (4).

3. The bearing accelerated life comprehensive test platform according to claim 2 is characterized in that: The acceleration mechanism (4) comprises a rotating shaft (41), the rotating shaft (41) being mounted in the inner wall of the top plate (2), the upper end of the rotating shaft (41) extending above the top plate (2) and being provided with a slave gear (42) meshing with the main gear (33), the lower end of the rotating shaft (41) being provided with a hydraulic rod (43), the bottom of the hydraulic rod (43) being provided with a clamping claw (44).

4. The bearing accelerated life comprehensive test platform according to claim 1, characterized in that: The bottom of the pushing component (51) is embedded in the top plate (2) and is rotatably connected thereto; the contact component (52) is located on the top of the pressing component (53); and the pressing component (53) is rotatably connected to the inner wall of the top plate (2); The pushing assembly (51) comprises a transmission shaft (511), the bottom of which is rotatably connected to the top plate (2), a transmission gear (512) meshing with the slave gear (42) is mounted on the transmission shaft (511), and a cam (513) is arranged on the top of the transmission shaft (511).

5. The bearing accelerated life comprehensive test platform according to claim 4 is characterized in that: The contact assembly (52) comprises an outer frame (521) and a contact plate (524). The outer frame (521) is fixed on the top of the pressing assembly (53). An adjusting motor (522) is installed inside the outer frame via a motor frame. The adjusting motor (522) is a double-axis motor and is installed with two screw rods (523). Two contact plates (524) are provided and are located inside the outer frame (521) and are slidably connected thereto.

6. The bearing accelerated life comprehensive test platform according to claim 5, characterized in that: The screw rod (523) extends into the interior of the contact plate (524); limit blocks (526) are provided on the upper and lower sides of the inner wall of the outer frame (521); limit grooves (525) are provided on the upper and lower side surfaces of the contact plate (524); the limit blocks (526) are located in the limit grooves (525), and the two are slidably connected.

7. The bearing accelerated life comprehensive test platform according to claim 4 is characterized in that: The pressing assembly (53) comprises an axle seat (531), the top of which is fixed to the outer frame (521), the axle seat (531) being installed in a side groove (21) provided on the top plate (2), and axle rods (532) being provided on both side walls of the axle seat (531) corresponding to the side groove (21), and the axle rods (532) being located in an inner groove (22) provided on the side walls of the side groove (21).

8. The bearing accelerated life comprehensive test platform according to claim 7, characterized in that: The end of the shaft rod (532) is rotatably connected to the inner groove (22), a torsion spring (533) is sleeved on the shaft rod (532), a stop rod (534) is provided at the bottom of the shaft seat (531), and a stop head (535) is provided at the bottom of the stop rod (534), and the stop head (535) is a spherical structure with a smooth surface.

9. The bearing accelerated life comprehensive test platform according to claim 1, characterized in that: The force-applying mechanism (6) comprises a slider (61), a push rod (64), and an inclined block (68). The slider (61) is located in a slide groove (11) provided on the upper surface of the workbench (1). A cavity is provided at one end of the slider (61) close to the bearing, in which a spring (62) is installed. One end of the spring (62) is connected to the side wall of the slide groove (11). A connecting plate (67) located on the upper surface of the workbench (1) is provided at one side of the slider (61) close to the abutment (535). The connecting plate (67) is slidably connected to the workbench (1). An inclined block (68) is provided on the connecting plate (67), and the inclined block (68) abuts against the abutment (535).

10. The bearing accelerated life comprehensive test platform according to claim 9, characterized in that: A fixing plate (63) is provided at the upper end of the slider (61). The top rod (64) is an elastic rod and a screw rod (65) is provided at one end thereof away from the bearing. The screw rod (65) is installed in a screw hole provided in the fixing plate (63). The two are threadedly connected. Nuts (66) are provided on both sides of the screw rod (65) located on the fixing plate (63).

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