Vibration test platform based on non-standard mechanical part test

Abstract

This invention relates to the field of vibration testing technology for mechanical components of electric vehicles, and particularly to a vibration test bench for testing non-standard mechanical components. It includes a base, a primary vibration seat, and a secondary vibration seat. A cam support is fixedly connected to the base, and a cam for driving the primary vibration seat to vibrate up and down is rotatably connected to the cam support. A roller is installed at the bottom of the primary vibration seat. By combining the linkage effect of the cam, transmission mechanism, and arc-shaped toothed plate, the vibration bench can synchronously generate composite vibration modes of translation, up-and-down vibration, and left-and-right oscillation. This more accurately reproduces the multi-dimensional and complex bumpy vibration state of non-standard mechanical components encountered by electric vehicles during driving under different road conditions. Compared with the traditional method of using a vibration motor for single-direction vibration testing, this vibration test bench effectively improves the accuracy and reference value of the vibration test data for mechanical components.

Description

Technical Field

[0001] This invention belongs to the field of vibration testing technology for mechanical components of electric vehicles, and specifically relates to a vibration testing bench for testing non-standard mechanical components. Background Technology

[0002] With the rapid development of electric vehicles, their mechanical components (such as battery packs, motors, electronic control systems, suspension components, etc.) face more stringent vibration environments. In order to improve the safety of mechanical components during use, vibration tests need to be conducted on mechanical components before they leave the factory.

[0003] Traditional vibration test benches rely solely on vibration motors for vibration testing. This method has significant limitations, as it cannot simulate the different vibrations experienced by electric vehicles due to varying road conditions during operation. Consequently, test results may differ from actual vibrations. Furthermore, the fixtures on vibration test benches are typically of regular shapes, which cannot effectively clamp and limit non-standard mechanical parts. This can cause mechanical parts to fall off during vibration testing, thus affecting the test data.

[0004] A search revealed that a patent document with publication number CN220625683U and publication date of March 19, 2024, discloses a bolt testing device for automotive fasteners. The device includes a testing box, a vibrating plate, and a fixing plate. Both ends of the testing box are equipped with first sliding components, and a vibrating plate is slidably mounted on the inner side of each first sliding component. A vibration motor is mounted on one end of the top of the vibrating plate, and both ends of the top of the vibrating plate have openings. A U-shaped plate is mounted on the bottom of the vibrating plate, and a second electric telescopic rod is mounted at the middle of the bottom of the U-shaped plate. Third sliding components are mounted on both ends of the top of the U-shaped plate, and a sliding plate is slidably mounted on the top of the third sliding components. This invention incorporates a standard nut, a turntable, a rotating shaft, and a servo motor. In use, the servo motor drives the turntable to rotate via the rotating shaft, which in turn drives the standard nut to rotate, allowing the standard nut to be threaded onto the bolt to be tested. This allows for the testing of the tightening effect of the bolt's outer threads.

[0005] However, the device still has the following drawbacks: although it can perform vibration detection on the tightening effect of the outer thread of the bolt, the vibration test is limited by simply setting up a vibration motor. It cannot simulate the different vibrations caused by different road conditions when an electric vehicle is driving, which leads to differences between the test results and reality. Summary of the Invention

[0006] To address the above problems, the present invention provides a vibration test bench for testing non-standard mechanical parts, including a base, a primary vibration seat and a secondary vibration seat. A cam support is fixedly connected to the base, and a cam for driving the primary vibration seat to vibrate up and down is rotatably connected to the cam support. A roller is installed at the bottom of the primary vibration seat.

[0007] The secondary vibration seat is provided with a through groove, and a transmission mechanism is provided in the through groove;

[0008] The transmission mechanism includes a fixed block and a first motor. A threaded rod is threadedly connected to the fixed block. Both ends of the threaded rod are fixedly connected to a linkage shaft. Gears are fixedly connected to both sets of linkage shafts.

[0009] Two sets of vertical plates are fixedly connected to the secondary vibration seat. Each set of vertical plates is provided with a crossbeam, and a loading component is rotatably connected between the two sets of crossbeams.

[0010] The loading assembly includes an arc-shaped platform, and two sets of arc-shaped toothed plates are laid at the bottom of the arc-shaped platform. The two sets of arc-shaped toothed plates are respectively meshed with two sets of gears.

[0011] The arc-shaped platform is provided with several sets of threaded holes, two of which are equipped with detachable limiting components for clamping and limiting mechanical parts.

[0012] Furthermore, several sets of telescopic rods are provided between the base and the primary vibration seat, and each set of telescopic rods is fitted with a buffer spring, with both ends of the buffer spring being fixedly connected to the base and the primary vibration seat respectively.

[0013] Furthermore, the bottom end of the fixed block passes through the through groove and is fixedly connected to the first-stage vibration seat. The two sets of linkage shafts are rotatably connected to the two sets of vertical plates respectively. One end of one set of linkage shafts passes through the corresponding set of vertical plates and is connected to the output end of the first motor. The fixed block is provided with two sets of sliding holes. The inner walls of the two sets of sliding holes are slidably connected with sliding shafts. The two sets of sliding shafts are fixedly connected to the inner wall of the through groove.

[0014] Furthermore, a second motor is mounted on the cam support, and the second motor is connected to the center of the cam for transmission. A limiting groove is formed on the side wall of the cam, and the limiting groove is in movable contact with the roller.

[0015] Furthermore, a reinforcement mechanism is provided on the arc-shaped platform. The reinforcement mechanism includes two sets of fixing plates, both of which are fixedly connected to the outer wall of the arc-shaped platform. A winding roller is rotatably connected between the two sets of fixing plates. Two sets of reinforcement strips are wound on the winding roller. A handwheel is installed after passing through one set of fixing plates at one end of the winding roller. Two sets of guide blocks are fixedly connected to the arc-shaped platform. Each set of guide blocks has a guide groove, which is movably fitted with the two sets of reinforcement strips. Two sets of mounting blocks are fixedly connected to the arc-shaped platform, and each set of mounting blocks is fixedly connected to one end of the two sets of reinforcement strips.

[0016] Furthermore, both ends of the arc-shaped platform are fixedly connected to side plates, and the center of each of the two sets of side plates is fixedly connected to a rotating shaft. The other ends of the two sets of rotating shafts are respectively rotatably connected to two sets of crossbeams. Both ends of the arc-shaped platform are provided with protective nets, and the top ends of the two sets of protective nets are respectively fixedly connected to the bottom ends of the two sets of side plates.

[0017] Furthermore, the limiting component includes a support platform, on which bolts are fixedly connected. Each bolt passes through a set of threaded holes and is threaded to a nut. Two sets of extension plates are fixedly connected to the support platform. Each set of extension plates is equipped with a worm gear bracket. A worm gear is rotatably connected to the worm gear bracket. A servo motor is installed inside the support platform. The output end of the servo motor passes through the support platform and is driven to a worm. The worm meshes with the worm gear.

[0018] Furthermore, the worm gear is provided with an adaptive adjustment mechanism, and the adaptive adjustment mechanism is provided with several sets of clamping mechanisms.

[0019] Furthermore, the adaptive adjustment mechanism includes a connecting bracket, on which a first rotating plate is rotatably connected with damping. A circular platform is fixedly connected to the other end of the first rotating plate. Several sets of hinge frames are mounted on the circular platform. The several sets of hinge frames are rotatably connected to several sets of clamping mechanisms respectively. A third motor is mounted on each of the several sets of hinge frames.

[0020] Furthermore, the clamping mechanism includes two sets of telescopic plates. A second rotating plate is fixedly connected to one set of the telescopic plates, and a drive shaft is fixedly connected to the second rotating plate. One end of the drive shaft is connected to the output end of a third motor. An electric telescopic rod is provided between the two sets of the telescopic plates, and a telescopic airbag is provided between the two sets of the telescopic plates. The electric telescopic rod is located inside the telescopic airbag. A suction cup is provided on one set of the telescopic plates, and an air guide tube is connected to the suction cup. The other end of the air guide tube passes through one set of the telescopic plates and extends into the interior of the telescopic airbag.

[0021] The beneficial effects of this invention are:

[0022] 1. Through the multi-stage linkage structure of the base, primary vibration seat, secondary vibration seat, and loading components, combined with the linkage effect of the cam, transmission mechanism, and arc-shaped toothed plate, the vibration table can synchronously generate composite vibration modes of translation, up-and-down vibration, and left-and-right oscillation. This allows for a more accurate reproduction of the multi-dimensional and complex bumpy vibration state of non-standard mechanical parts encountered by electric vehicles during driving under different road conditions. Compared with the traditional method of using a vibration motor for single-direction vibration testing, this vibration test table effectively improves the accuracy and reference value of mechanical part vibration test data.

[0023] 2. By using bolts and nuts for installation, the limiting components can be installed at different positions within the arc-shaped platform. The angle of the support platform can be adjusted as needed, making it easy for the limiting components to clamp non-standard mechanical parts with different structural shapes. A servo motor drives the worm gear to rotate, causing two sets of worm wheels to drive two sets of connecting brackets to rotate synchronously. This brings several clamping mechanisms into contact with the surface of the mechanical parts. As the worm wheels continue to rotate, the clamping mechanisms abut against the surface of the mechanical parts. Simultaneously, the first rotating plate rotates adaptively due to the abutment pressure, making the clamping mechanisms fit even better against the surface of the mechanical parts. Therefore, this vibration test bench can be used for stable clamping and vibration testing of various non-standard mechanical parts with different shapes, effectively improving the compatibility of the vibration test bench.

[0024] 3. The second rotating plate is driven by the third motor to adjust the tilt angle of the suction cup so that the suction cup and the surface of the mechanical part are at the same angle. The electric telescopic rod drives a set of telescopic plates to move so that the suction cup and the surface of the mechanical part are in contact. At the same time, the telescopic airbag is in a stretched state, which creates negative pressure on the surface of the suction cup, so that the suction cup is adsorbed on the surface of the mechanical part, thereby improving the stability of clamping.

[0025] 4. By rotating the handwheel, the winding roller can perform the winding and unwinding operations of two sets of reinforcing tapes. This allows the length of the two sets of reinforcing tapes to be adjusted according to the size of the mechanical parts inside the arc-shaped platform, so that the two sets of reinforcing tapes adhere to the surface of the mechanical parts and reinforce them. By setting protective nets at both ends of the arc-shaped platform, the mechanical parts are further protected, effectively preventing damage caused by the mechanical parts falling or bumping during vibration testing, thereby improving the stability and safety of vibration testing. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the main structure according to an embodiment of the present invention is shown;

[0028] Figure 2 A schematic diagram of the transmission mechanism structure according to an embodiment of the present invention is shown;

[0029] Figure 3 A schematic diagram of the main structure from another perspective according to an embodiment of the present invention is shown;

[0030] Figure 4 A schematic diagram of the loading component structure according to an embodiment of the present invention is shown;

[0031] Figure 5 A schematic diagram of the limiting component structure according to an embodiment of the present invention is shown;

[0032] Figure 6 A schematic diagram of the adaptive adjustment mechanism and clamping mechanism according to an embodiment of the present invention is shown;

[0033] Figure 7 A cross-sectional view of the clamping mechanism structure according to an embodiment of the present invention is shown.

[0034] In the diagram: 100, base; 110, cam support; 120, cam; 121, limiting groove; 130, second motor; 200, primary vibration seat; 210, roller; 300, secondary vibration seat; 310, through groove; 320, transmission mechanism; 321, fixing block; 322, threaded rod; 323, linkage shaft; 324, gear; 325, primary motor; 326, sliding hole; 327, sliding shaft; 400, telescopic rod; 500, spring; 600, upright plate; 700, crossbeam; 800, loading assembly; 810, arc-shaped platform; 811, threaded hole; 820, reinforcing mechanism; 821, fixing plate; 822, winding roller; 823, reinforcing belt; 824, handwheel. ; 830, Guide block; 840, Arc-shaped toothed plate; 850, Mounting block; 860, Side plate; 870, Rotating shaft; 880, Protective net; 900, Limiting component; 910, Support platform; 920, Bolt; 930, Nut; 940, Extension plate; 950, Worm gear bracket; 960, Worm gear; 970, Adaptive adjustment mechanism; 971, Connecting bracket; 972, First rotating plate; 973, Circular platform; 974, Hinge frame; 975, Third motor; 980, Worm; 990, Clamping mechanism; 991, Telescopic plate; 992, Second rotating plate; 993, Electric telescopic rod; 994, Telescopic airbag; 995, Suction cup; 996, Air duct; 997, Drive shaft. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This invention provides a vibration testing bench for testing non-standard mechanical parts, including a base 100, a primary vibration seat 200, and a secondary vibration seat 300; for example, Figure 1 and Figure 2 As shown.

[0037] Several sets of telescopic rods 400 are provided between the base 100 and the first-stage vibration seat 200. Each set of telescopic rods 400 is fitted with a buffer spring 500. The two ends of the buffer spring 500 are respectively fixedly connected to the base 100 and the first-stage vibration seat 200.

[0038] The secondary vibration seat 300 is movably fitted with the primary vibration seat 200. The secondary vibration seat 300 has a through groove 310, and a transmission mechanism 320 is provided in the through groove 310. Two sets of upright plates 600 are fixedly connected to the secondary vibration seat 300. A crossbeam 700 is provided on each of the two sets of upright plates 600. A loading assembly 800 is rotatably connected between the two sets of crossbeams 700.

[0039] The transmission mechanism 320 includes a fixed block 321 and a first motor 325. The bottom end of the fixed block 321 passes through the through groove 310 and is fixedly connected to the first-stage vibration seat 200. A threaded rod 322 is threadedly connected to the fixed block 321. Both ends of the threaded rod 322 are fixedly connected to a linkage shaft 323. The two sets of linkage shafts 323 are rotatably connected to two sets of vertical plates 600 respectively. One end of one set of linkage shafts 323 passes through the corresponding set of vertical plates 600 and is connected to the output end of the first motor 325. Gears 324 are fixedly connected to both sets of linkage shafts 323. Two sets of sliding holes 326 are provided on the fixed block 321. Sliding shafts 327 are slidably connected to the inner walls of both sets of sliding holes 326. Both sets of sliding shafts 327 are fixedly connected to the inner walls of the through groove 310.

[0040] Specifically, the first motor 325 drives the linkage shaft 323 to rotate, causing the threaded rod 322 to rotate synchronously. Through the threaded connection between the threaded rod 322 and the fixed block 321, and since the fixed block 321 is fixedly connected to the first-stage vibration seat 200, the rotation of the threaded rod 322 simultaneously drives the second-stage vibration seat 300 to move against the surface of the first-stage vibration seat 200. By driving the threaded rod 322 to rotate in both directions, the first motor 325 causes the second-stage vibration seat 300 to move back and forth, thereby causing the loading assembly 800 to drive the mechanical parts to move back and forth, simulating the reciprocating translational vibration state of the mechanical parts during use.

[0041] For example, such as Figure 3 and Figure 4 As shown.

[0042] A cam bracket 110 is fixedly connected to the base 100, a cam 120 is rotatably connected to the cam bracket 110, a second motor 130 is mounted on the cam bracket 110, the second motor 130 is connected to the center of the cam 120, a limiting groove 121 is formed on the side wall of the cam 120, and a roller 210 is mounted at the bottom end of the first-stage vibration seat 200, the roller 210 is movably fitted with the limiting groove 121;

[0043] Specifically, the second motor 130 drives the cam 120 to rotate, causing the roller 210 to rotate against the inner wall of the limiting groove 121. This causes the first-stage vibration seat 200 to move up and down with the rotation of the cam 120. Several sets of telescopic rods 400 and buffer springs 500 support and buffer the first-stage vibration seat 200 to improve the stability of the first-stage vibration seat 200 during its up and down movement, thereby simulating the vibration state of the mechanical parts inside the loading assembly 800 during use.

[0044] The loading assembly 800 includes an arc-shaped platform 810, on which a reinforcing mechanism 820 is provided. The reinforcing mechanism 820 includes two sets of fixing plates 821, both sets of fixing plates 821 being fixedly connected to the outer wall of the arc-shaped platform 810. A winding roller 822 is rotatably connected between the two sets of fixing plates 821. Two sets of reinforcing strips 823 are wound on the winding roller 822. A handwheel 824 is installed at one end of the winding roller 822 after passing through a set of fixing plates 821.

[0045] Two sets of guide blocks 830 are fixedly connected to the arc-shaped platform 810. Each set of guide blocks 830 has a guide groove. The two sets of guide grooves are respectively in contact with two sets of reinforcing strips 823. Two sets of mounting blocks 850 are fixedly connected to the arc-shaped platform 810. The two sets of mounting blocks 850 are respectively fixedly connected to one end of the two sets of reinforcing strips 823.

[0046] Specifically, by rotating the handwheel 824, the winding roller 822 can perform the winding and unwinding operations of the two sets of reinforcing belts 823. This allows the length of the two sets of reinforcing belts 823 to be adjusted according to the size of the mechanical parts inside the arc-shaped platform 810, so that the two sets of reinforcing belts 823 adhere to the surface of the mechanical parts and reinforce them. This effectively prevents the mechanical parts from falling or being damaged by collisions during vibration testing, thereby improving the stability and safety of the vibration testing process.

[0047] The bottom end of the arc-shaped platform 810 is provided with two sets of arc-shaped toothed plates 840, and the two sets of arc-shaped toothed plates 840 are respectively meshed with two sets of gears 324.

[0048] Specifically, through the meshing relationship between the two arc-shaped toothed plates 840 and the two sets of gears 324 respectively, the two sets of gears 324 rotate back and forth, while the two sets of arc-shaped toothed plates 840 drive the arc-shaped platform 810 to swing back and forth, thereby simulating the left-right swinging vibration state of the mechanical parts during use.

[0049] Both ends of the arc-shaped platform 810 are fixedly connected to side plates 860, and the center of each of the two sets of side plates 860 is fixedly connected to a rotating shaft 870. The other ends of the two sets of rotating shafts 870 are respectively rotatably connected to two sets of crossbeams 700. Both ends of the arc-shaped platform 810 are provided with protective nets 880, and the top of each of the two sets of protective nets 880 is fixedly connected to the bottom of each of the two sets of side plates 860.

[0050] The arc-shaped platform 810 is provided with several sets of threaded holes 811, and a limit component 900 can be detachably installed in two sets of threaded holes 811.

[0051] Specifically, the mechanical parts are clamped and limited by two sets of limiting components 900. By setting several sets of threaded holes 811, the positions of the two sets of limiting components 900 can be adjusted to a position that is convenient for clamping. This allows for the clamping of non-standard mechanical parts with different structural shapes. By setting protective nets 880 at both ends of the arc-shaped platform 810, the mechanical parts are further protected, effectively preventing them from falling off the limiting components 900 and causing damage during vibration.

[0052] For example, such as Figure 5-7 As shown.

[0053] The limiting component 900 includes a support platform 910, on which bolts 920 are fixedly connected. The bolts 920 pass through a set of threaded holes 811 and are threaded to a nut 930. Two sets of extension plates 940 are fixedly connected to the support platform 910. Worm gear brackets 950 are installed on both sets of extension plates 940. Worm gears 960 are rotatably connected to the worm gear brackets 950. Adaptive adjustment mechanisms 970 are provided on the worm gears 960. Several sets of clamping mechanisms 990 are provided on the adaptive adjustment mechanisms 970. A servo motor is installed inside the support platform 910. The output end of the servo motor passes through the support platform 910 and is driven to a worm 980. The worm 980 is meshed with the worm gear 960.

[0054] Specifically, the limiting component 900 can be installed at different positions within the arc-shaped platform 810 using bolts 920 and nuts 930. The angle of the support platform 910 can be adjusted as needed, making it easy for the limiting component 900 to clamp and limit mechanical parts of different structures and shapes. The servo motor drives the worm gear 980 to rotate, causing the two sets of worm wheels 960 to drive the two sets of adaptive adjustment mechanisms 970 to rotate synchronously, thereby adjusting the angle between the two sets of adaptive adjustment mechanisms 970 so that several sets of clamping mechanisms 990 can clamp and limit the mechanical parts.

[0055] The adaptive adjustment mechanism 970 includes a connecting bracket 971, on which a first rotating plate 972 is rotatably connected with damping. The other end of the first rotating plate 972 is fixedly connected to a circular platform 973. Several sets of hinge frames 974 are installed on the circular platform 973. The several sets of hinge frames 974 are rotatably connected to several sets of clamping mechanisms 990 respectively. A third motor 975 is installed on each of the several sets of hinge frames 974.

[0056] Specifically, two sets of worm gears 960 drive two sets of connecting brackets 971 to rotate synchronously, causing several sets of clamping mechanisms 990 to contact the surface of the mechanical parts. As the worm gears 960 continue to rotate, the clamping mechanisms 990 come into contact with the surface of the mechanical parts. At the same time, the first rotating plate 972 rotates adaptively due to the contact pressure, making the several sets of clamping mechanisms 990 fit more closely with the surface of the mechanical parts.

[0057] The clamping mechanism 990 includes two sets of telescopic plates 991. A second rotating plate 992 is fixedly connected to one set of telescopic plates 991. A transmission shaft 997 is fixedly connected to the second rotating plate 992. One end of the transmission shaft 997 is connected to the output end of a third motor 975. An electric telescopic rod 993 is provided between the two sets of telescopic plates 991. A telescopic airbag 994 is provided between the two sets of telescopic plates 991. The electric telescopic rod 993 is located inside the telescopic airbag 994. A suction cup 995 is provided on one set of telescopic plates 991. An air guide tube 996 is connected to the suction cup 995. The other end of the air guide tube 996 passes through one set of telescopic plates 991 and extends into the interior of the telescopic airbag 994.

[0058] Specifically, the third motor 975 drives the second rotating plate 992 to rotate, adjusting the tilt angle of the suction cup 995 so that the suction cup 995 is at the same angle as the surface of the mechanical part. The electric telescopic rod 993 drives a set of telescopic plates 991 to move, so that the suction cup 995 is in contact with the surface of the mechanical part. At the same time, the telescopic airbag 994 is in a stretched state, creating negative pressure on the surface of the suction cup 995, so that the suction cup 995 is adsorbed on the surface of the mechanical part, thereby improving the stability of clamping.

[0059] The working principle of the vibration testing bench for testing non-standard mechanical parts proposed in this invention is as follows:

[0060] By using bolts 920 and nuts 930, the limiting component 900 can be installed at different positions within the arc-shaped platform 810, and the angle of the support platform 910 can be adjusted as needed, thus making it easy for the limiting component 900 to clamp non-standard mechanical parts with different structural shapes.

[0061] The servo motor drives the worm gear 980 to rotate, which in turn drives the two sets of worm wheels 960 to rotate the two sets of connecting brackets 971 synchronously. This causes several sets of clamping mechanisms 990 to come into contact with the surface of the mechanical part. As the worm wheels 960 continue to rotate, the clamping mechanisms 990 come into contact with the surface of the mechanical part. At the same time, the first rotating plate 972 rotates adaptively due to the contact pressure, making the clamping mechanisms 990 fit more closely to the surface of the mechanical part.

[0062] The third motor 975 drives the second rotating plate 992 to rotate, adjusting the tilt angle of the suction cup 995 so that the suction cup 995 is at the same angle as the surface of the mechanical part. The electric telescopic rod 993 drives a set of telescopic plates 991 to move, so that the suction cup 995 is in contact with the surface of the mechanical part. At the same time, the telescopic airbag 994 is in a stretched state, which generates negative pressure on the surface of the suction cup 995, so that the suction cup 995 is adsorbed on the surface of the mechanical part, thereby improving the stability of clamping.

[0063] By rotating the handwheel 824, the winding roller 822 can perform the winding and unwinding operations of the two sets of reinforcing tapes 823. This allows the length of the two sets of reinforcing tapes 823 to be adjusted according to the size of the mechanical parts inside the arc-shaped platform 810, so that the two sets of reinforcing tapes 823 adhere to the surface of the mechanical parts and reinforce them. This effectively prevents the mechanical parts from falling or being damaged by collisions during vibration testing, thereby improving the stability and safety of vibration testing. By setting protective nets 880 at both ends of the arc-shaped platform 810, the mechanical parts are further protected, effectively preventing the mechanical parts from falling off the limiting component 900 and causing damage during vibration.

[0064] The first motor 325 drives the linkage shaft 323 to rotate, causing the threaded rod 322 to rotate synchronously. Through the threaded connection between the threaded rod 322 and the fixed block 321, and since the fixed block 321 is fixedly connected to the first-stage vibration seat 200, the rotation of the threaded rod 322 simultaneously drives the second-stage vibration seat 300 to move against the surface of the first-stage vibration seat 200. By driving the threaded rod 322 to rotate in both directions, the first motor 325 causes the second-stage vibration seat 300 to move back and forth, thereby causing the loading assembly 800 to drive the mechanical parts to move back and forth, simulating the reciprocating translational vibration state of the mechanical parts during use.

[0065] While the linkage shaft 323 reciprocates, the two sets of gears 324 reciprocate synchronously. Through the meshing relationship between the two arc-shaped toothed plates 840 and the two sets of gears 324 respectively, the two sets of gears 324 reciprocate while the two sets of arc-shaped toothed plates 840 drive the arc-shaped platform 810 to swing back and forth, thereby simulating the left-right swinging vibration state of the mechanical parts during use.

[0066] The second motor 130 drives the cam 120 to rotate, causing the roller 210 to rotate against the inner wall of the limiting groove 121. This causes the first-stage vibration seat 200 to move up and down with the rotation of the cam 120. Several sets of telescopic rods 400 and buffer springs 500 support and buffer the first-stage vibration seat 200 to improve the stability of the first-stage vibration seat 200 during its up and down movement, thereby simulating the vibration state of the mechanical parts inside the loading assembly 800 during use.

[0067] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration testing bench for testing non-standard mechanical parts, comprising a base, a primary vibration seat, and a secondary vibration seat, characterized in that: A cam bracket is fixedly connected to the base, and a cam for driving the primary vibration seat to vibrate up and down is rotatably connected to the cam bracket. A roller is installed at the bottom of the primary vibration seat. The secondary vibration seat is provided with a through groove, and a transmission mechanism is provided in the through groove; The transmission mechanism includes a fixed block and a first motor. A threaded rod is threadedly connected to the fixed block. Both ends of the threaded rod are fixedly connected to a linkage shaft. Gears are fixedly connected to both sets of linkage shafts. Two sets of vertical plates are fixedly connected to the secondary vibration seat. Each set of vertical plates is provided with a crossbeam, and a loading component is rotatably connected between the two sets of crossbeams. The loading assembly includes an arc-shaped platform, and two sets of arc-shaped toothed plates are laid at the bottom of the arc-shaped platform. The two sets of arc-shaped toothed plates are respectively meshed with two sets of gears. The arc-shaped platform is provided with several sets of threaded holes, two of which are equipped with detachable limiting components for clamping and limiting mechanical parts.

2. The vibration testing bench for testing non-standard mechanical parts according to claim 1, characterized in that: Several sets of telescopic rods are provided between the base and the primary vibration seat. Each set of telescopic rods is fitted with a buffer spring, and the two ends of the buffer spring are fixedly connected to the base and the primary vibration seat, respectively.

3. The vibration testing bench for testing non-standard mechanical parts according to claim 1, characterized in that: The bottom end of the fixed block passes through the through groove and is fixedly connected to the first-stage vibration seat. The two sets of linkage shafts are rotatably connected to the two sets of vertical plates respectively. One end of one set of linkage shafts passes through the corresponding set of vertical plates and is connected to the output end of the first motor. The fixed block is provided with two sets of sliding holes. The inner walls of the two sets of sliding holes are slidably connected with sliding shafts. The two sets of sliding shafts are fixedly connected to the inner wall of the through groove.

4. The vibration testing bench for testing non-standard mechanical parts according to claim 1, characterized in that: A second motor is mounted on the cam support, and the second motor is connected to the center of the cam. A limit groove is formed on the side wall of the cam, and the limit groove is in contact with the roller.

5. The vibration testing bench for testing non-standard mechanical parts according to claim 1, characterized in that... The curved platform is equipped with a reinforcement mechanism, which includes two sets of fixing plates. Both sets of fixing plates are fixedly connected to the outer wall of the curved platform. A winding roller is rotatably connected between the two sets of fixing plates. Two sets of reinforcement strips are wound on the winding roller. A handwheel is installed after passing through one set of fixing plates at one end of the winding roller. Two sets of guide blocks are fixedly connected to the curved platform. Each set of guide blocks has a guide groove. The guide grooves are respectively in contact with the two sets of reinforcement strips. Two sets of mounting blocks are fixedly connected to the curved platform. Each set of mounting blocks is fixedly connected to one end of the two sets of reinforcement strips.

6. The vibration testing bench for testing non-standard mechanical parts according to claim 5, characterized in that: Both ends of the arc-shaped platform are fixedly connected to side plates, and the center of each of the two sets of side plates is fixedly connected to a rotating shaft. The other ends of the two sets of rotating shafts are respectively rotatably connected to two sets of crossbeams. Both ends of the arc-shaped platform are provided with protective nets, and the top of each set of protective nets is fixedly connected to the bottom of the two sets of side plates.

7. The vibration testing bench for testing non-standard mechanical parts according to claim 1, characterized in that: The limiting component includes a support platform, on which bolts are fixedly connected. Each bolt passes through a set of threaded holes and is threaded to a nut. Two sets of extension plates are fixedly connected to the support platform. Each set of extension plates is equipped with a worm gear bracket. A worm gear is rotatably connected to the worm gear bracket. A servo motor is installed inside the support platform. The output end of the servo motor passes through the support platform and is driven to a worm. The worm meshes with the worm gear.

8. The vibration testing bench for testing non-standard mechanical parts according to claim 7, characterized in that: The worm gear is equipped with an adaptive adjustment mechanism, and the adaptive adjustment mechanism is equipped with several sets of clamping mechanisms.

9. The vibration testing bench for testing non-standard mechanical parts according to claim 8, characterized in that: The adaptive adjustment mechanism includes a connecting bracket, on which a first rotating plate is rotatably connected with damping. A circular platform is fixedly connected to the other end of the first rotating plate. Several sets of hinge frames are mounted on the circular platform. The several sets of hinge frames are rotatably connected to several sets of clamping mechanisms. A third motor is mounted on each of the several sets of hinge frames.

10. The vibration testing bench for testing non-standard mechanical parts according to claim 9, characterized in that: The clamping mechanism includes two sets of telescopic plates. A second rotating plate is fixedly connected to one set of telescopic plates, and a drive shaft is fixedly connected to the second rotating plate. One end of the drive shaft is connected to the output end of a third motor. An electric telescopic rod is provided between the two sets of telescopic plates, and a telescopic airbag is provided between the two sets of telescopic plates. The electric telescopic rod is located inside the telescopic airbag. A suction cup is provided on one set of telescopic plates, and an air guide tube is connected to the suction cup. The other end of the air guide tube passes through one set of telescopic plates and extends into the interior of the telescopic airbag.

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