Automobile shock absorber and buffer test device thereof

Abstract

The invention discloses an automobile shock absorber and a buffer test device thereof, and relates to the technical field of automobile shock absorbers, the automobile shock absorber comprises a shock absorber main body, one end of the shock absorber main body is provided with a mounting hole, and a position, close to the mounting hole, of the shock absorber main body is provided with a test positioning member; and the other end of the shock absorber main body is provided with a detachable detection top piece. The buffer test device of the automobile shock absorber comprises a test board, a sensing detection mechanism, a telescopic installation clamping piece and a simulation turntable mechanism. The simulation turntable mechanism drives the reciprocating screw rod to synchronously rotate in the rotating process, the reciprocating screw rod enables the matched screw rod sleeve to reciprocate, and the screw rod sleeve drives the linkage ring to transversely reciprocate, so that the linkage ring drives the distributed sliding bumps to slide relative to the simulation turntable mechanism through the first linkage rod to adjust the projection height; therefore, different-degree bumpy road surfaces can be automatically adjusted and simulated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile shock absorbers, and in particular to an automobile shock absorber and a buffer testing device thereof. Background Art

[0002] In order to reduce the impact of bumpy roads on drivers and passengers during driving, shock absorbers are installed at the corresponding positions of each tire. The principle of automobile shock absorbers is mainly to reduce the vibration caused by uneven roads during driving by consuming heat energy, thereby improving driving comfort. When automobile shock absorbers are produced and leave the factory, they need to be tested to see if their buffering performance is up to standard.

[0003] A Chinese patent with authorization announcement number CN111458137B discloses a vehicle shock absorber testing device, including a support plate, a fixing plate, a first connecting seat, a detection motor, and a detection wheel. The device can simulate the tire pneumatic wheel structure, and a protrusion is set on the outer wall of the detection wheel to simulate the road condition, so that the pneumatic tire moves up and down during the rotation process, and then pushes the shock absorber during the movement, changing the pressure between the shock absorber and the acceleration sensor, and performing buffer detection.

[0004] The shortcomings of the above-mentioned prior art solutions are: although the above-mentioned solution can simulate road conditions by setting protrusions on the detection wheel, so as to simulate the pneumatic tire running on a bumpy road to cause the shock absorber to operate in a buffering manner, the protrusions set on the detection wheel of the above-mentioned solution cannot be adjusted, and the actual car may pass through a variety of bumpy roads of different degrees during driving. Therefore, when the above-mentioned solution is used to test the car shock absorber, the test results are single and the test effect is not good enough. Although it can be adjusted manually, manual adjustment is not convenient enough. Summary of the invention

[0005] The purpose of the present invention is to provide an automobile shock absorber and a buffer testing device thereof, so as to solve the technical problem that the automobile shock absorber buffer testing device in the prior art is not convenient for adjusting the raised structure simulating the bumpy road surface, and thus is not convenient for simulating various bumpy roads of different degrees for testing.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A car shock absorber comprises a shock absorber body, one end of which is provided with a mounting hole, a test positioning piece is arranged near the mounting hole of the shock absorber body, and a detachable detection top piece is arranged at the other end of the shock absorber body.

[0008] As a further solution of the present invention: the detachable detection top piece includes a plug post and a card plate, the plug post is fixedly connected to the bottom of the card plate, and one end of the shock absorber body is provided with a hole matching the plug post. When testing the shock absorber body, the plug post can be inserted into the hole, and then the test is completed by relying on the card plate to dock the buffer test device. After the test is completed, it can be directly removed without affecting the subsequent installation and use of the shock absorber body.

[0009] As a further solution of the present invention: the test positioning member includes a positioning plate and a positioning hole, the positioning plate is coaxially fixedly connected to the other end of the shock absorber body, and the positioning holes are provided on the positioning plate and exist in pairs, so as to facilitate the positioning and installation of the plug-in rod body.

[0010] A buffer test device for an automobile shock absorber, comprising a test bench, a sensor detection mechanism and a telescopic mounting fixture, wherein the sensor detection mechanism is used to cooperate with a detachable detection top member, one side of the telescopic mounting fixture is docked with a test positioning member, and the other side of the telescopic mounting fixture is provided with a detection wheel; and further comprising a simulation turntable mechanism;

[0011] The simulated turntable mechanism is used to contact and drive the detection wheel to rotate, and an automatic adjustment protrusion mechanism is distributed on the simulated turntable mechanism. The automatic adjustment protrusion mechanism is used to simulate an uneven road surface, and during the rotation of the simulated turntable mechanism, the automatic adjustment protrusion mechanism automatically adjusts the protrusion height.

[0012] As a further solution of the present invention: the automatic adjustment protrusion mechanism includes a sliding protrusion and a movable connecting rod pushing mechanism, and a plurality of connecting grooves are distributed circumferentially on the simulated turntable mechanism. A plurality of sliding protrusions are provided, and corresponding sliding connections are made in the connecting grooves, and each of the sliding protrusions is cooperatively connected with the movable connecting rod pushing mechanism.

[0013] As a further solution of the present invention: the movable link pushing mechanism includes a linkage ring, a first linkage rod and a reciprocating transverse pushing mechanism, the linkage ring is arranged in parallel on one side of the simulated turntable mechanism, a plurality of first linkage rods are arranged and circumferentially distributed on the linkage ring, one end of each of the first linkage rods is movably connected to the linkage ring through a hinge, and the other end is movably connected to the corresponding sliding protrusion, the reciprocating transverse pushing mechanism is slidably arranged on the test bench, and one side of the reciprocating transverse pushing mechanism is rotatably coordinated with the linkage ring.

[0014] As a further solution of the present invention: the reciprocating lateral ejection mechanism includes a reciprocating screw, a screw sleeve and a linkage ejection mechanism, the reciprocating screw is coaxially connected to the simulated turntable mechanism, the screw sleeve is cooperatively connected to the reciprocating screw, and the linkage ejection mechanism is cooperatively connected between the screw sleeve and the linkage ring.

[0015] As a further solution of the present invention: the linkage pushing mechanism includes a U-shaped lifting and extrusion plate and a connecting guide rail, the connecting guide rail is vertically fixedly connected to the test bench, the U-shaped lifting and extrusion plate is slidably connected to the connecting guide rail, one side of the U-shaped lifting and extrusion plate is movably connected to a second linkage rod through a hinge, and the end of the second linkage rod is movably connected to a screw sleeve through a hinge, and the other side of the U-shaped lifting and extrusion plate is longitudinally equidistantly distributed with a plurality of mutually parallel extrusion inclined surfaces, a transition plane is arranged between adjacent extrusion inclined surfaces, a guide sleeve is fixedly arranged on the test bench, and a sliding rod is slidably arranged on the guide sleeve, a limiting spring is connected between the sliding rod and the guide sleeve, one end of the sliding rod is matched with the extrusion inclined surface, and the other end is rotatably connected with the linkage ring.

[0016] As a further solution of the present invention: the telescopic mounting card includes a telescopic support rod, a first electric telescopic rod and a docking pin, the telescopic support rod is vertically fixedly connected to the test bench, the first electric telescopic rod is horizontally fixedly connected to the telescopic end of the telescopic support rod, and the detection wheel is rotatably arranged at one end of the first electric telescopic rod, the docking pin is fixedly installed at the other end of the first electric telescopic rod, and the docking pin cooperates with the mounting hole, and one side of the telescopic end of the telescopic support rod is fixedly connected with a docking card frame that cooperates with the test positioning piece.

[0017] As a further solution of the present invention: the sensing detection mechanism includes a second electric telescopic rod and a lifting detection plate, the second electric telescopic rod is fixedly connected to the test bench, the lifting detection plate is fixedly connected to the telescopic end of the second electric telescopic rod, and a card slot matching with a detachable detection top piece is provided at the bottom of the lifting detection plate, and a detection sensor is installed on the inner side of the card slot.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention drives the detection wheel to rotate by distributing a plurality of sliding protrusions circumferentially on the simulated turntable mechanism, thereby simulating a bumpy road surface, so that the shock absorber body performs a vibration reduction and buffering effect, and the simulated turntable mechanism drives the reciprocating screw to rotate synchronously during the rotation process, and the reciprocating screw causes the screw sleeve that is arranged in conjunction to reciprocate, and the screw sleeve drives the linkage ring to reciprocate laterally, so that the linkage ring drives the distributed sliding protrusions to slide relative to the simulated turntable mechanism to adjust the protrusion height through the first linkage rod, thereby automatically adjusting and simulating different degrees of bumpy road surfaces, which is convenient for completing various bumpy road surface tests on the shock absorber, without the need for manual shutdown adjustment, and the test operation is simple and convenient.

[0020] 2. When the screw rod of the present invention reciprocates on the reciprocating screw rod, the second linkage rod pushes and pulls the U-shaped lifting and extruding plate to reciprocate longitudinally. The U-shaped lifting and extruding plate relies on the sliding rod set by the extrusion effect of the distributed multiple extrusion slopes, so that the sliding rod drives the linkage ring to move horizontally, so that the sliding protrusion can adjust the protrusion height, and a transition plane is provided between adjacent extrusion slopes, so that the sliding protrusion can maintain the corresponding protrusion height for a certain time after each adjustment of the protrusion height, so that the shock absorber can be tested for a certain time under the simulated corresponding bumpy road conditions, so as to fully collect multiple sets of data under the same simulation state and improve the accuracy of the test results.

[0021] 3. A positioning plate and positioning holes distributed on the positioning plate are provided at one end of the shock absorber of the present invention, which is convenient for docking with the docking bracket on the buffer test device, so as to quickly realize the test installation and positioning of the shock absorber main body, and a detachable card block is provided at the other end of the shock absorber main body, which is convenient for docking with the card slot on the lifting detection plate, so as to effectively contact with the detection sensor and complete the test conveniently, and the card block can also be removed from the shock absorber main body to avoid affecting the subsequent use of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of an automobile shock absorber in the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of a buffer testing device for an automobile shock absorber in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the shock absorber body and the lifting detection plate in the present invention;

[0026] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 5 It is a schematic diagram of the structure of the sliding protrusion, the turntable body and the linkage ring in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the linkage ring, the slide rod and the U-shaped lifting and extruding plate in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the top ring in the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the linkage ring and the top ring in the present invention;

[0031] Fig. 9It is a structural schematic diagram of the U-shaped lifting extrusion plate in the present invention;

[0032] Fig.10 It is a schematic diagram of the state when the U-shaped lifting and squeezing plate in the present invention descends so that the sliding protrusion slides out relative to the turntable body.

[0033] In the figure: 1. test bench; 2. shock absorber body; 3. lifting detection plate; 4. second electric telescopic rod; 5. telescopic support rod; 6. first electric telescopic rod; 7. docking pin; 8. detection wheel; 9. turntable body; 10. drive motor; 11. card plate; 12. plug column; 13. positioning plate; 14. positioning hole; 15. mounting hole; 16. docking card rack; 17. card slot; 18. detection sensor; 19. socket; 20. sliding protrusion; 21. connecting slide groove; 22. first linkage rod; 23. linkage ring; 24. top ring; 25. guide sleeve; 26. slide rod; 27. U-shaped lifting extrusion plate; 28. connecting guide rail; 29. ​​second linkage rod; 30. reciprocating screw; 31. screw sleeve; 32. annular connecting groove; 33. extrusion slope; 34. transition plane. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1 As shown, a car shock absorber includes a shock absorber body 2, one end of the shock absorber body 2 is provided with a mounting hole 15 for use in actual installation, the mounting hole 15 facilitates the connection of the end of the shock absorber body 2 close to the position of the car wheel body, and the shock absorber body 2 is provided with a test positioning piece near the mounting hole 15, the test positioning piece facilitates the positioning and installation of the shock absorber body 2 on the buffer test device; the other end of the shock absorber body 2 is provided with a detachable detection top piece, when the shock absorber body 2 needs to be tested for buffering test, it is positioned and installed on the test device by relying on the test positioning piece, and the detachable detection top piece is connected to the detection position of the buffering test, so as to facilitate stable testing, and when the test is completed, the detachable detection top piece can be removed to avoid affecting the actual installation and use of the shock absorber body 2.

[0036] Among them, Figure 4As shown, the detachable detection top piece includes a plug post 12 and a card plate 11. The plug post 12 is fixedly connected to the bottom of the card plate 11. One end of the shock absorber body 2 is provided with a socket 19 that matches the plug post 12. When the shock absorber body 2 is tested, the plug post 12 can be inserted into the socket 19, and then the card plate 11 is used to connect the buffer test device to complete the test. After the test is completed, it can be directly removed without affecting the subsequent installation and use of the shock absorber body 2.

[0037] In addition, if Figure 3 As shown, the test positioning member includes a positioning plate 13 and a positioning hole 14. The positioning plate 13 is coaxially fixedly connected to the other end of the shock absorber body 2. The positioning holes 14 are provided on the positioning plate 13 in pairs to facilitate the positioning and installation of the plug-in rod body.

[0038] In order to facilitate the buffer test of the above-mentioned automobile shock absorber, Figures 2 to 10 As shown, the present invention discloses a buffer test device for automobile shock absorbers, comprising a test bench 1, a sensor detection mechanism and a telescopic mounting fixture, both of which are arranged on the test bench 1, and the sensor detection mechanism is used to cooperate and dock with a detachable detection top piece, the telescopic mounting fixture can move up and down relative to the test bench 1, one side of the telescopic mounting fixture is docked with a test positioning piece, that is, one end of a shock absorber body 2 is cooperated and docked with the sensor detection mechanism through the detachable detection top piece, and the other end is docked with the telescopic mounting fixture through the test positioning piece, so as to realize the test installation of the shock absorber body 2, and a detection wheel 8 is arranged on the other side of the telescopic mounting fixture, and the detection wheel 8 is used to simulate the automobile tire actually connected to the shock absorber body 2;

[0039] The testing device also includes a simulated turntable mechanism, which is used to contact and drive the detection wheel 8 to rotate, and an automatic adjusting protrusion mechanism is distributed on the simulated turntable mechanism, and the automatic adjusting protrusion mechanism is used to simulate an uneven road surface, so that the detection wheel 8 will be bumpy during rotation, so that the shock absorber body 2 can play a vibration reduction role, and during the rotation of the simulated turntable mechanism, the automatic adjusting protrusion mechanism automatically adjusts the protrusion height, thereby simulating road surfaces with different degrees of undulation, which is convenient for the shock absorber body 2 to perform vibration reduction and buffering tests under different bump conditions.

[0040] In some specific embodiments, such as Figure 5 and Figure 6 As shown, the automatic adjustment protrusion mechanism includes a sliding protrusion 20 and a movable connecting rod pushing mechanism. A plurality of connecting grooves 21 are distributed circumferentially on the simulated turntable mechanism. A plurality of sliding protrusions 20 are provided, and corresponding sliding connections are in the connecting grooves 21. Each sliding protrusion 20 is connected with the movable connecting rod pushing mechanism. During the rotation of the simulated turntable mechanism, the movable connecting rod pushing mechanism pushes each sliding protrusion 20 to slide relative to the simulated turntable to adjust the protrusion height.

[0041] Among them, the movable link pushing mechanism includes a linkage ring 23, a first linkage rod 22 and a reciprocating transverse pushing mechanism. The linkage ring 23 is arranged in parallel on one side of the simulated turntable mechanism. There are multiple first linkage rods 22 and they are circumferentially distributed on the linkage ring 23. One end of each first linkage rod 22 is movably connected to the linkage ring 23 through a hinge, and the other end is movably connected to the corresponding sliding protrusion 20. When the linkage ring 23 moves laterally to approach or move away from the simulated turntable mechanism, it pushes and pulls each sliding protrusion 20 to adjust the sliding position relative to the simulated turntable mechanism through the distributed first linkage rods 22, thereby adjusting the protrusion height; the reciprocating transverse pushing mechanism is slidably arranged on the test bench 1, and one side of the reciprocating transverse pushing mechanism is rotatably matched with the linkage ring 23. During the rotation of the simulated turntable mechanism, the reciprocating transverse pushing mechanism drives the linkage ring 23 to move reciprocatingly and laterally, thereby allowing the distributed sliding protrusions 20 to adjust the protrusion height.

[0042] In some specific embodiments, the reciprocating lateral ejection mechanism includes a reciprocating screw 30, a screw sleeve 31 and a linkage ejection mechanism. The reciprocating screw 30 is coaxially connected to the simulated turntable mechanism, and the two rotate synchronously. The reciprocating screw 30 is a screw that can make the slider realize reciprocating motion without changing the rotation direction of the main shaft. Specifically, it is two thread grooves with the same pitch and opposite rotation directions. The two ends are connected with a transition curve. Through the rotation of the screw, the side of the spiral groove pushes the slider placed in the spiral groove to make axial reciprocating motion; the screw sleeve 31 is connected to the reciprocating screw 30. During the rotation of the reciprocating screw 30, the screw sleeve 31 can reciprocate on the reciprocating screw 30. The linkage ejection mechanism is connected between the screw sleeve 31 and the linkage ring 23.

[0043] When the simulated turntable mechanism rotates and drives the detection wheel 8 to rotate, the reciprocating screw 30 rotates synchronously, and the screw sleeve 31 on the reciprocating screw 30 reciprocates, thereby pushing and pulling the linkage ring 23 to reciprocate through the linkage push-pull mechanism, thereby realizing the sliding adjustment position of the sliding protrusion 20 on the simulated turntable mechanism, without the need to separately control the position of the sliding protrusion 20.

[0044] In some specific implementation schemes, in order to facilitate the sliding protrusion 20 to maintain the corresponding protrusion state for a certain period of time after each adjustment, multiple bumpy sections are intermittently simulated, so that the shock absorber body 2 can be tested for a certain period of time under each simulated bumpy section, so as to collect as many groups of test data as possible, effectively test the shock absorber body 2, and combine Figures 5 to 9As shown, the linkage push mechanism includes a U-shaped lifting and extruding plate 27 and a connecting guide rail 28. Two connecting guide rails 28 are provided and are vertically fixedly connected to the test bench 1. The U-shaped lifting and extruding plate 27 is slidably connected to the connecting guide rail 28, and the U-shaped opening of the U-shaped lifting and extruding plate 27 is vertically downward. One side of the U-shaped lifting and extruding plate 27 is movably connected to a second linkage rod 29 through a hinge, and the end of the second linkage rod 29 is movably connected to a screw sleeve 31 through a hinge. A plurality of mutually parallel extrusion inclined surfaces 33 are longitudinally equidistantly distributed on the other side of the U-shaped lifting and extruding plate 27, and a transition plane 34 is provided between adjacent extrusion inclined surfaces 33. A guide sleeve 25 is fixedly provided on the test bench 1 through a mounting seat, and a slide rod 26 is slidably provided in the guide sleeve 25. The slide rod 26 runs through the entire guide sleeve 25. A compressible limit spring is connected between the slide rod 26 and the guide sleeve 25. One end of the slide rod 26 cooperates with the extrusion inclined surface 33, and the other end is rotatably connected with the linkage ring 23.

[0045] When the sliding protrusion 20 is received in the connecting slide groove 21 on the simulated turntable mechanism, the screw sleeve 31 is at the end of the reciprocating screw 30 close to the simulated turntable mechanism, and at this time the U-shaped lifting and extruding plate 27 is at a higher position of the connecting guide rail 28. At this time, the end of the slide rod 26 contacts the extrusion slope 33 at the lowest point of the U-shaped lifting and extruding plate 27. When the simulated turntable mechanism starts to rotate, the reciprocating screw 30 rotates synchronously, and the screw sleeve 31 moves along the reciprocating screw 30 in the direction away from the simulated turntable mechanism. In this process, the screw sleeve 31 pulls the U-shaped lifting and extruding plate 27 down along the connecting guide rail 28 through the second linkage rod 29. In this process, the U The extrusion slope 33 distributed on one side of the U-shaped lifting and extruding plate 27 begins to squeeze the slide bar 26, and the slide bar 26 slides in the direction close to the simulated turntable mechanism and compresses the limit spring. The sliding slide bar 26 pushes the linkage ring 23, and the linkage ring 23 pushes each sliding protrusion 20 to extend a certain distance through the distributed first linkage rod 22, that is, the automatic adjustment of the protrusion height is realized. When the U-shaped lifting and extruding plate 27 drops a certain distance, the slide bar 26 squeezes through the corresponding extrusion slope 33 and then contacts the corresponding transition plane 34. At this time, since the end of the slide bar 26 only slides relative to the transition plane 34 in the vertical plane, no vertical sliding occurs. The sliding protrusion 20 can maintain a corresponding raised state relative to the simulated turntable mechanism for a certain period of time, and then as the simulated turntable mechanism rotates, it is convenient to act on the detection wheel 8, causing a corresponding degree of bumps during the rotation process, so that the shock absorber body 2 can produce a corresponding degree of telescopic buffering. As the U-shaped lifting and squeezing plate 27 continues to descend, the next squeezing slope 33 squeezes the sliding rod 26, causing it to slide horizontally again, so that the distributed sliding protrusions 20 extend a certain distance relative to the simulated turntable mechanism again, and then the sliding rod 26 contacts the corresponding transition plane 34 again, and so on and so forth, which is convenient for detection. The measuring wheel 8 can be tested for a certain period of time in each raised state of the sliding protrusion 20 after adjustment, which is convenient for determining under what kind of bumpy state the shock absorber body 2 may fail, that is, intermittent simulation testing of the buffering performance of the shock absorber body 2 under various bumpy road conditions, and after the screw sleeve 31 moves along the reciprocating screw 30 to the end away from the simulated turntable mechanism and starts to move back, the screw sleeve 31 then pushes the U-shaped lifting and extrusion plate 27 to rise through the second linkage rod 29, and the sliding rod 26 can slide back by relying on the rebound force of the limit spring, thereby facilitating the intermittent driving of the sliding protrusion 20 to gradually shrink, and this process is repeated.

[0046] It should be noted that in order to facilitate the U-shaped lifting and extrusion plate 27 to move away from the simulated turntable mechanism when the screw sleeve 31 is moved, a compressible spring can be connected between the U-shaped lifting and extrusion plate 27 and the top of the connecting guide rail 28, and when the U-shaped lifting and extrusion plate 27 is at a higher position of the connecting guide rail 28, the spring is in a compressed state, so when sliding down, it can rely on the spring rebound force to assist in descending.

[0047] It should also be noted that, in order to facilitate the normal lifting and lowering of the U-shaped lifting and extruding plate 27, a first opening is opened at the corresponding position of the test bench 1.

[0048] In some specific embodiments, in order to facilitate the slide rod 26 to effectively dock with the linkage ring 23 and prevent it from affecting the linkage ring 23, the slide rod 26 is fixedly connected to the top ring 24 at one end close to the linkage ring 23, and the top ring 24 is provided with an annular connecting groove 32 on one side close to the linkage ring 23. The two sides of the linkage ring 23 are symmetrically connected with pulleys that are slidably connected to the annular connecting groove 32. It should be noted that the opening of the annular connecting groove 32 is smaller than the width of the pulley to prevent the pulley from detaching from the inside of the annular connecting groove 32.

[0049] In other specific embodiments, the simulated turntable mechanism includes a turntable body 9, a turntable body 9 and a drive motor 10. The turntable body 9 is rotatably connected to the test bench 1 via a rotating shaft. The reciprocating screw 30 is coaxially connected to the turntable body 9 and rotates synchronously. The drive motor 10 is used to drive the turntable body 9 to rotate, and a second through opening matching the turntable body 9 is opened on the test bench 1. The connecting groove 21 is actually distributed on the turntable body 9, and the sliding protrusion 20 is connected to the turntable body 9 via the connecting groove 21.

[0050] In some specific embodiments, the telescopic mounting fixture includes a telescopic support rod 5, a first electric telescopic rod 6 and a docking pin 7. The telescopic support rod 5 is vertically fixedly connected to the test bench 1, the first electric telescopic rod 6 is horizontally fixedly connected to the telescopic end of the telescopic support rod 5, and the detection wheel 8 is rotatably set at one end of the first electric telescopic rod 6, the docking pin 7 is fixedly installed at the other end of the first electric telescopic rod 6, and the docking pin 7 is matched with the mounting hole 15. One side of the telescopic end of the telescopic support rod 5 is fixedly connected with a docking card frame 16 that matches the test positioning piece. Specifically, the docking card frame 16 can be set to a U-shaped structure, and then when the shock absorber body 2 is installed, the positioning hole 14 on the positioning plate 13 near the bottom position of the shock absorber body 2 is docked with the U-shaped structure docking card frame 16.

[0051] In some specific embodiments, such as Figure 4 As shown, the sensing detection mechanism includes a second electric telescopic rod 4 and a lifting detection plate 3. The second electric telescopic rod 4 is fixedly connected to the test bench 1 through a bracket, the telescopic end of the second electric telescopic rod 4 faces upward, the lifting detection plate 3 is fixedly connected to the telescopic end of the second electric telescopic rod 4, and a card slot 17 matching with a detachable detection top piece is opened at the bottom of the lifting detection plate 3. A detection sensor 18 is installed on the inner side of the card slot 17. The detection sensor 18 can specifically be a pressure sensor, and an external data acquisition and display device is connected to display the pressure data value in real time, which is convenient for the test operator to judge. The detachable detection top piece on the shock absorber body 2 can be inserted into the card slot 17 to realize detection docking.

[0052] It should be noted that when installing the shock absorber body 2, ensure that the detection wheel 8 contacts between two adjacent sliding protrusions 20, that is, when the shock absorber body 2 is installed, its bottom is at the lowest position and can be supported. In this way, it can be ensured that the block 11 at the end of the shock absorber body 2 is always in the card slot 17 during the ups and downs of the detection wheel 8, thereby ensuring the detection effect. Figure 2 As shown, the sliding protrusion 20 abuts against the bottom of the detection wheel 8, which actually makes the detection wheel 8 rise a certain distance. At this time, the shock absorber body 2 has been compressed to a certain extent.

[0053] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0054] First, the positioning hole 14 on the positioning plate 13 near the bottom of the shock absorber body 2 is docked with the U-shaped docking bracket 16 to support the bottom of the shock absorber body 2. At this time, the mounting hole 15 at the bottom of the shock absorber body 2 is aligned with the docking pin 7, and the first electric telescopic rod 6 is controlled to extend. The first electric telescopic rod 6 is inserted into the mounting hole 15 with the docking pin 7 to achieve docking between the detection wheel 8 and the bottom of the shock absorber body 2. Then, the second electric telescopic rod 4 is controlled to contract to drive the lifting detection plate 3 to descend, and the card slot 17 at the bottom of the lifting detection plate 3 is docked with the card plate 11 installed on the top of the shock absorber body 2. When the card plate 11 contacts the detection sensor 18, the second electric telescopic rod 4 is stopped in time according to the value detected by the detection sensor 18.

[0055] Then start the driving motor 10 to drive the turntable body 9 to rotate. Since the turntable body 9 contacts the detection wheel 8, it can drive the detection wheel 8 to rotate together, and the turntable body 9 is provided with sliding protrusions 20. Therefore, when the sliding protrusions 20 pass through the detection wheel 8, due to the existence of the telescopic support rod 5, the detection wheel 8 will move up and down, thereby compressing the shock absorber body 2, thereby simulating the situation where a car is bumpy when driving on the road. In this process, whether the vibration reduction and buffering performance of the shock absorber body 2 is qualified can be judged according to the pressure value detected by the detection sensor 18.

[0056] During the rotation of the turntable body 9, the reciprocating screw 30 rotates synchronously, and the screw sleeve 31 moves along the reciprocating screw 30 in the direction away from the turntable body 9. During this process, the screw sleeve 31 pulls the U-shaped lifting and squeezing plate 27 to slide down along the connecting guide rail 28 through the second linkage rod 29. During this process, the extrusion slope 33 distributed on one side of the U-shaped lifting and squeezing plate 27 begins to squeeze the slide bar 26, and the slide bar 26 slides in the direction close to the turntable body 9 and compresses the limit spring. The sliding slide bar 26 pushes the linkage ring 23, and the linkage ring 23 passes through the distribution The first linkage rod 22 pushes each sliding protrusion 20 to extend a certain distance, that is, the automatic adjustment of the protrusion height is realized. When the U-shaped lifting and squeezing plate 27 drops a certain distance, the sliding rod 26 squeezes through the corresponding squeezing slope 33 and then contacts the corresponding transition plane 34. At this time, since the end of the sliding rod 26 only slides relative to the transition plane 34 in the vertical plane and no lateral movement occurs, the sliding protrusion 20 can maintain the corresponding protrusion state relative to the turntable body 9 for a certain time, and then rotates with the turntable body 9, which is convenient for the detection wheel 8 to be generated. The U-shaped lifting and squeezing plate 27 is used to produce a corresponding degree of bumps during the rotation process, so that the shock absorber body 2 produces a corresponding degree of telescopic buffering. As the U-shaped lifting and squeezing plate 27 continues to descend, the next squeezing slope 33 squeezes the sliding rod 26, causing it to slide horizontally again, so that the distributed sliding protrusions 20 extend a certain distance relative to the turntable body 9 again, and then the sliding rod 26 contacts the corresponding transition plane 34 again, and so on and so forth, so that the detection wheel 8 can be detected for a certain period of time in each convex state of the adjusted sliding protrusion 20, so that it is convenient to determine under what kind of bump state the shock absorber body 2 may fail, that is, intermittently simulate the buffering performance of the shock absorber body 2 under various degrees of bumpy road conditions, and after the screw sleeve 31 moves along the reciprocating screw 30 to the end away from the turntable body 9, it starts to move back, at this time, the screw sleeve 31 pushes the U-shaped lifting and squeezing plate 27 to rise through the second linkage rod 29, and the sliding rod 26 can slide back by relying on the rebound force of the limit spring, so as to facilitate the intermittent driving of the sliding protrusion 20 to gradually shrink, and so on and so forth.

[0057] After the test is completed, the shock absorber body 2 can be disassembled. Since the clamping plate 11 is connected to the socket 19 on the shock absorber body 2 through the plug post 12, it can be directly removed without affecting the subsequent installation and use of the shock absorber body 2.

[0058] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An automobile shock absorber, comprising a shock absorber body (2), one end of the shock absorber body (2) being provided with a mounting hole (15), characterized in that: A test positioning piece is arranged at a position of the shock absorber body (2) close to the mounting hole (15); and a detachable detection top piece is arranged at the other end of the shock absorber body (2).

2. The automobile shock absorber according to claim 1, characterized in that: The detachable detection top piece includes a plug post (12) and a card plate (11), wherein the plug post (12) is fixedly connected to the bottom of the card plate (11), and one end of the shock absorber body (2) is provided with a plug hole (19) that matches the plug post (12). When the shock absorber body (2) is tested, the plug post (12) can be inserted into the plug hole (19), and then the card plate (11) is connected to the buffer test device to complete the test. After the test is completed, the plug post (12) can be directly removed without affecting the subsequent installation and use of the shock absorber body (2).

3. The automobile shock absorber according to claim 1, characterized in that: The test positioning member comprises a positioning plate (13) and a positioning hole (14); the positioning plate (13) is coaxially fixedly connected to the other end of the shock absorber body (2); the positioning holes (14) are provided on the positioning plate (13) and exist in pairs, so as to facilitate the positioning and installation of the plug-in rod body.

4. A buffer test device for an automobile shock absorber, used for testing an automobile shock absorber according to claim 1, comprising a test bench (1), a sensor detection mechanism and a telescopic mounting fixture, wherein the sensor detection mechanism is used to cooperate with a detachable detection top member, one side of the telescopic mounting fixture is docked with a test positioning member, and the other side of the telescopic mounting fixture is provided with a detection wheel (8); characterized in that: Also included is a simulated turntable mechanism; The simulated turntable mechanism is used to contact and drive the detection wheel (8) to rotate, and an automatic adjustment protrusion mechanism is distributed on the simulated turntable mechanism. The automatic adjustment protrusion mechanism is used to simulate an uneven road surface, and the automatic adjustment protrusion mechanism automatically adjusts the protrusion height during the rotation of the simulated turntable mechanism.

5. The buffering test device for automobile shock absorber according to claim 4, characterized in that: The automatic adjustment protrusion mechanism comprises a sliding protrusion (20) and a movable connecting rod pushing mechanism. A plurality of connecting slide grooves (21) are circumferentially distributed on the simulated turntable mechanism. A plurality of sliding protrusions (20) are provided and correspondingly slidably connected in the connecting slide grooves (21). Each sliding protrusion (20) is cooperatively connected with the movable connecting rod pushing mechanism.

6. A buffering test device for automobile shock absorber according to claim 5, characterized in that: The movable link ejection mechanism comprises a linkage ring (23), a first linkage rod (22) and a reciprocating transverse ejection mechanism. The linkage ring (23) is arranged in parallel on one side of the simulated turntable mechanism. A plurality of first linkage rods (22) are arranged and circumferentially distributed on the linkage ring (23). One end of each of the first linkage rods (22) is movably connected to the linkage ring (23) through a hinge, and the other end is movably connected to a corresponding sliding protrusion (20). The reciprocating transverse ejection mechanism is slidably arranged on the test bench (1), and one side of the reciprocating transverse ejection mechanism is rotationally matched with the linkage ring (23).

7. A buffering test device for automobile shock absorbers according to claim 6, characterized in that: The reciprocating lateral ejection mechanism comprises a reciprocating screw (30), a screw sleeve (31) and a linkage ejection mechanism; the reciprocating screw (30) is coaxially connected to the simulated turntable mechanism; the screw sleeve (31) is cooperatively connected to the reciprocating screw (30); and the linkage ejection mechanism is cooperatively connected between the screw sleeve (31) and the linkage ring (23).

8. The buffering test device for automobile shock absorber according to claim 7, characterized in that: The linkage push mechanism comprises a U-shaped lifting and extruding plate (27) and a connecting guide rail (28), wherein the connecting guide rail (28) is vertically fixedly connected to the test bench (1), the U-shaped lifting and extruding plate (27) is slidably connected to the connecting guide rail (28), one side of the U-shaped lifting and extruding plate (27) is movably connected to a second linkage rod (29) via a hinge, and the end of the second linkage rod (29) is movably connected to a screw sleeve (31) via a hinge, and the U-shaped lifting and extruding plate (27) is movably connected to the screw sleeve (31) via a hinge. 7) On the other side, a plurality of mutually parallel extrusion inclined surfaces (33) are longitudinally equidistantly distributed, and a transition plane (34) is provided between adjacent extrusion inclined surfaces (33). A guide sleeve (25) is fixedly provided on the test bench (1), and a slide rod (26) is slidably provided on the guide sleeve (25). A limit spring is connected between the slide rod (26) and the guide sleeve (25), and one end of the slide rod (26) is matched with the extrusion inclined surface (33), and the other end is rotatably connected with the linkage ring (23).

9. The buffering test device for automobile shock absorber according to claim 4, characterized in that: The telescopic mounting fixture comprises a telescopic support rod (5), a first electric telescopic rod (6) and a docking latch (7); the telescopic support rod (5) is vertically fixedly connected to the test bench (1); the first electric telescopic rod (6) is horizontally fixedly connected to the telescopic end of the telescopic support rod (5); and a detection wheel (8) is rotatably arranged at one end of the first electric telescopic rod (6); the docking latch (7) is fixedly mounted at the other end of the first electric telescopic rod (6); and the docking latch (7) matches with the mounting hole (15); and a docking bracket (16) matching with the test positioning component is fixedly connected to one side of the telescopic end of the telescopic support rod (5).

10. The buffering test device for automobile shock absorber according to claim 4, characterized in that: The sensing detection mechanism includes a second electric telescopic rod 4 and a lifting detection plate 3, wherein the second electric telescopic rod 4 is fixedly connected to the test bench 1, and the lifting detection plate 3 is fixedly connected to the telescopic end of the second electric telescopic rod 4, and a card slot 17 matching with a detachable detection top piece is provided at the bottom of the lifting detection plate 3, and a detection sensor 18 is installed inside the card slot 17.

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