A shock absorber performance testing device for vehicle engineering

Abstract

The application relates to the technical field of shock absorber performance testing, and discloses a shock absorber performance testing device for vehicle engineering, which comprises a detection box, a shock absorber body and a lower plate fixedly connected at the bottom of the detection box, a servo motor is fixedly installed in the inside of the mounting frame, the output end of the servo motor is fixedly connected with a rotating disc through the mounting frame, a detection assembly is arranged on one side of the top of the rotating disc, and an auxiliary assembly is arranged in the middle of the top of the rotating disc. Through the arrangement of the detection assembly, the shock absorber body is slowly rotated along with the rotating disc, the contact plate extrudes the shock absorber body, extrusion detection is realized, and the shock absorber body is simultaneously limited in the front and back sides when the shock absorber body is rotated to the position below the sliding seat, the left and right sides are limited when the shock absorber body is fixed, multi-directional fixation is realized, the vertical inclination of the shock absorber body can be reduced during the extrusion detection, and the accuracy of the extrusion detection is improved.

Description

Technical Field

[0001] This invention relates to the field of shock absorber performance testing technology, specifically to a shock absorber performance testing device for vehicle engineering. Background Technology

[0002] Shock absorbers are the core damping components in a vehicle's suspension system. By utilizing the resistance of fluid flow or the compression characteristics of gas, they dissipate the vibration energy generated by road bumps during vehicle operation by converting it into heat energy, thereby suppressing excessive vibration of the vehicle body and wheels, reducing impact, and improving ride smoothness, comfort, and handling stability. At the same time, they reduce wear on various vehicle components caused by vibration and extend their service life.

[0003] For example, a vehicle engineering shock absorber performance testing device, as disclosed in announcement number CN224317319U, includes a base plate. Multiple base columns are fixedly connected to the top of the base plate. A vibration mechanism is installed on the top of the base plate. Support plates are fixedly connected to the tops of the multiple base columns. Two support columns are fixedly connected to the top of the support plates. A top plate is fixedly connected to the outside of the two support columns. A lifting mechanism is installed on the top of the top plate. A shock absorber is detachably connected inside the lifting mechanism. The vibration mechanism includes two protective boxes. Two fixed plates are fixedly connected to the top of the base plate. This achieves the effect of simulating the vibration of a car during operation. Furthermore, the drive speed of the motor can be controlled to control the vibration frequency generated by the vibration mechanism to simulate the operation of a car under different road conditions.

[0004] When performing compression performance tests on automotive shock absorbers, it is necessary to simulate the driving and compression process of the shock absorber, keep the actual installation state of the shock absorber close to vertical, and observe the amount of compression displacement and the effect of compression rebound during the compression process. If the clamp bolts are loose on one side or there is slight displacement due to alternating load during the test, the shock absorber will tilt. If the shock absorber is not in a vertical state during the compression test, an additional lateral friction force will be generated between the piston rod and the guide sleeve, which will cause the measured key parameters such as damping force and stiffness to deviate, and will not reflect the true performance of the product, thus affecting the smooth progress of the test.

[0005] Therefore, a shock absorber performance testing device for vehicle engineering is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a shock absorber performance testing device for vehicle engineering, in order to solve the problem that when the shock absorber is subjected to alternating loads during compression performance testing, a small displacement will occur, which will cause the shock absorber to tilt and ultimately lead to deviations in the measured key parameters such as damping force and stiffness.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a shock absorber performance testing device for vehicle engineering, comprising a testing box, a shock absorber body, and a lower plate fixedly connected to the bottom of the testing box, wherein a door is hinged to one side of the front of the testing box; Also includes: A mounting frame is fixedly installed on the inner bottom surface of the testing box. A servo motor is fixedly installed inside the mounting frame. The output end of the servo motor passes through the mounting frame and is fixedly connected to a turntable. A detection component is provided on one side of the top of the turntable, and an auxiliary component is provided in the middle of the top of the turntable. The auxiliary component is used to assist in limiting the detection of the shock absorber body. The detection assembly includes a rotating unit and a limiting unit. The rotating unit includes two slide rods that are vertically slidably installed inside the turntable. The top of the two slide rods is fixedly installed with the same contact plate. Sliding seats are also symmetrically installed on both sides of the inner wall of the detection box. The sliding seats can move up or down along the height direction of the detection box. The limiting unit includes a rear arc plate and a front arc plate that are slidably mounted on the top of the turntable. The rear arc plate and the front arc plate can move in the horizontal longitudinal direction and are driven synchronously to assist in limiting the compression detection of the shock absorber body.

[0008] Preferably, the inner walls of the testing box are symmetrically and vertically fixedly connected with side rods on both sides, and a sliding plate is slidably connected to the outer side of the side rods. A spring is sleeved on the upper outer side of the side rods. The top end of the spring is fixedly connected to the inner top surface of the testing box, and the bottom end of the spring is fixedly connected to the sliding plate. The sliding plate fits against the inner wall of the testing box and is fixedly connected to the sliding seat.

[0009] Preferably, arc-shaped toothed plates are symmetrically fixedly connected to the lower sides of the inner wall of the detection box, a base plate is fixedly connected to one side of the bottom of the turntable, a screw is rotatably connected inside the base plate, a gear is fixedly connected to the side of the screw away from the mounting frame, a torsion spring is sleeved on the outside of the screw, the two ends of the torsion spring are fixedly connected to the base plate and the gear respectively, a threaded sleeve is threaded to the outside of the screw, and a sliding groove is opened inside the turntable.

[0010] Preferably, a movable plate is fixedly connected to the outer side of the screw sleeve, the movable plate is slidably connected to the slide groove, an auxiliary pressure plate is fixedly connected to the top of the movable plate, a connecting rod is slidably connected inside the auxiliary pressure plate, one end of the connecting rod is fixedly connected to the rear arc plate, a second spring is sleeved on the outer side of the connecting rod, the two ends of the second spring are fixedly connected to the auxiliary pressure plate and the rear arc plate respectively, an outer plate is fixedly connected to the other end of the connecting rod, rear side strips are fixedly connected to both sides of the rear arc plate, two push rods are slidably connected inside the rear side strips, and a fixed plate is fixedly connected to one side of the front of the turntable.

[0011] Preferably, a U-shaped tube is fixedly connected inside the fixed plate, and the same front side strip is slidably connected to the outer sides of the upper and lower push rods. A front arc plate is fixedly connected between the two front side strips. A spring three is sleeved on the outer side of the push rod, and the two ends of the spring three are fixedly connected to the upper part of the U-shaped tube and the front side strip, respectively. A moving rod is slidably connected to the lower part of the U-shaped tube, and a vertical strip is fixedly connected to one end of the moving rod. The vertical strip abuts against the front side strip. A spring four is sleeved on the outer side of the moving rod, and the two ends of the spring four are fixedly connected to the lower part of the U-shaped tube and the front side strip, respectively.

[0012] Preferably, the auxiliary component includes a rear plate and a front plate fixedly connected to the top of the turntable. A drive motor is fixedly installed on the outer side of the rear plate, and a lead screw is fixedly connected to the output end of the drive motor. The lead screw is rotatably connected to the front plate.

[0013] Preferably, an adjusting plate is threadedly connected to the outer side of the front plate, the bottom of the adjusting plate is in contact with the turntable, a horizontal plate is fixedly connected to the outer side of the adjusting plate, and a bonding plate is fixedly connected to the side of the horizontal plate away from the adjusting plate.

[0014] Preferably, the contact plate is fixed to the two slide rods by bolts, an upper mounting plate is fixedly connected to the bottom of the contact plate, a lower mounting plate is fixedly connected to the top of the turntable, and the lower mounting plate is located directly below the upper mounting plate.

[0015] Preferably, a detection plate is fixedly connected to the outer side of the contact plate, a displacement sensor is fixedly installed on the top of the turntable, the displacement sensor and the detection plate are located on the same vertical axis, and a push rod is fixedly installed on the top of the turntable.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a detection component, and utilizing the cooperation of components such as the turntable and contact plate in the rotating unit, the shock absorber body rotates slowly with the turntable, and the contact plate is squeezed by the sliding seat. The contact plate squeezes the shock absorber body, thereby realizing the compression detection. At the same time, by utilizing the cooperation of the front arc plate and the rear arc plate in the limiting unit, when the shock absorber body rotates to the position below the sliding seat, the shock absorber body is simultaneously limited in the front and rear sides. Combined with the left and right side limiting when the shock absorber body is fixed, multi-directional fixation is achieved. This reduces the vertical tilt of the shock absorber body during compression detection, improving the accuracy of compression detection. Furthermore, after the turntable speed increases, the auxiliary components can assist in driving the auxiliary pressure plate to move, thereby further assisting in pressing the front arc plate and the rear arc plate, increasing the limiting and pressing force on the shock absorber body, and further reducing the vertical deviation of the shock absorber body during compression detection. The specific details are as follows: 1. By setting up the detection components, the operator fixes the top of the shock absorber body to the upper mounting plate with bolts, and the bottom of the shock absorber body to the lower mounting plate with bolts. Then, the servo motor is started, and the servo motor drives the turntable to rotate slowly. The turntable drives the shock absorber body and the contact plate to rotate. The gear meshes with the arc-shaped toothed plate, so that the gear rotates on its own axis while revolving around the center. The gear drives the screw to rotate, and the gear acts on the torsion spring. The rotation of the screw will drive the screw sleeve and the moving plate to move. The moving plate slides inside the slide groove and drives the auxiliary pressure plate to move. The auxiliary pressure plate drives the rear side strip to move through the second spring. The rear side strip drives the rear arc plate to move closer to the back of the shock absorber body. The rear side strip slides into the U-shaped tube through the push rod and squeezes the hydraulic oil inside the U-shaped tube. The hydraulic oil then pushes the moving rod to move. The moving rod drives the vertical strip to move. The vertical strip stretches the fourth spring and pushes the front... The side strip moves, and the front side strip drives the front arc plate to approach the front of the shock absorber body, thereby simultaneously limiting the front and rear sides of the shock absorber body. Combined with the left and right side limits when the shock absorber body is fixed, multi-directional fixation is achieved. This reduces the vertical tilt of the shock absorber body during compression testing and improves the accuracy of compression testing. At the same time, the turntable drives the push rod to rotate. The push rod first presses the inclined surface of the sliding seat, which will drive the sliding seat to rise. The sliding seat drives the slide plate to rise, and the slide plate compresses the first spring. When the sliding seat separates from the push rod, the elastic force of the first spring drives the slide plate and the sliding seat to press down. The sliding seat compresses the contact plate, and the contact plate presses the shock absorber body, thereby realizing compression testing. The contact plate drives the detection plate to move, and the displacement sensor detects the movement distance of the detection plate. When the gear separates from the arc toothed plate, the rear arc plate and the front arc plate slide and reset, which facilitates subsequent compression testing. 2. By setting auxiliary components, the drive motor is started to work. The drive motor drives the lead screw to rotate, the lead screw drives the adjustment plate to move, the adjustment plate drives the horizontal plate to move, the horizontal plate drives the bonding plate to move, the bonding plate approaches the outer plate and squeezes the outer plate, and the outer plate drives the rear arc plate to move through the connecting rod, thereby increasing the clamping force on the rear arc plate and further reducing the vertical deviation when the shock absorber body is squeezed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the side rod structure of the present invention; Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic cross-sectional view of the detection box of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic cross-sectional view of the turntable structure of the present invention; Figure 7For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8 For the present invention Figure 6 Enlarged structural diagram at point D; Figure 9 This is a schematic cross-sectional view of the fixing plate of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point E; Figure 11 This is a schematic diagram of the slide bar structure of the present invention; Figure 12 This is a schematic diagram of the bonding plate structure of the present invention; Figure 13 For the present invention Figure 12 Enlarged structural diagram at point F.

[0018] In the diagram: 1. Detection box; 2. Lower plate; 3. Box door; 4. Mounting bracket; 5. Servo motor; 6. Turntable; 7. Detection assembly; 71. Side rod; 72. Slide plate; 73. Spring 1; 74. Sliding seat; 75. Arc-shaped toothed plate; 76. Base plate; 77. Screw; 78. Gear; 79. Torsion spring; 710. Screw sleeve; 711. Slide groove; 712. Moving plate; 713. Auxiliary pressure plate; 714. Connecting rod; 715. Rear arc plate; 716. Spring 2; 7161. Outer plate; 717. Rear side strip; 718. Push 719. Rod; 720. Fixing plate; 721. U-shaped tube; 722. Front arc plate; 723. Front side strip; 724. Spring three; 725. Moving rod; 726. Vertical strip; 727. Spring four; 8. Auxiliary components; 81. Rear plate; 82. Drive motor; 83. Lead screw; 84. Front plate; 85. Adjusting plate; 86. Horizontal plate; 87. Adhesive plate; 9. Slide rod; 10. Contact plate; 11. Upper mounting plate; 12. Lower mounting plate; 13. Detection plate; 14. Displacement sensor; 15. Shock absorber body; 16. Push rod. Detailed Implementation

[0019] 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, and 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.

[0020] Please see Figure 1 - Figure 3 The present invention provides a technical solution: a shock absorber performance testing device for vehicle engineering, including a test box 1, a shock absorber body 15 and a lower plate 2 fixedly connected to the bottom of the test box 1, and a door 3 is hinged to one side of the front of the test box 1.

[0021] A mounting frame 4 is fixedly installed on the inner bottom surface of the testing box 1. A servo motor 5 is fixedly installed inside the mounting frame 4. The output end of the servo motor 5 passes through the mounting frame 4 and is fixedly connected to a turntable 6.

[0022] like Figure 1 and Figure 3 - Figure 10 As shown, a detection component 7 is provided on one side of the top of the turntable 6. The detection component 7 includes a rotating unit and a limiting unit. The rotating unit includes two slide rods 9 that are vertically slidably installed inside the turntable 6. The top of the two slide rods 9 is fixedly installed with the same contact plate 10. Sliding seats 74 are also symmetrically installed on both sides of the inner wall of the detection box 1. The sliding seats 74 can move up or down along the height direction of the detection box 1.

[0023] The inner walls of the testing box 1 are symmetrically and vertically fixedly connected with side rods 71 ​​on both sides. Each side rod 71 includes two vertically arranged side rods 71. The slide plate 72 is slidably connected to both side rods 71 ​​to keep the slide plate 72 sliding stably. The slide plate 72 is slidably connected to the outer side of the side rod 71. A spring 73 is sleeved on the upper outer side of the side rod 71. The top of the spring 73 is fixedly connected to the inner top surface of the testing box 1. The bottom of the spring 73 is fixedly connected to the slide plate 72. The slide plate 72 fits against the inner wall of the testing box 1. The slide plate 72 is fixedly connected to the sliding seat 74.

[0024] Arc-shaped toothed plates 75 are symmetrically fixedly connected to the lower sides of the inner wall of the test box 1. A base plate 76 is fixedly connected to one side of the bottom of the turntable 6. A screw 77 is rotatably connected inside the base plate 76. A gear 78 is fixedly connected to the side of the screw 77 away from the mounting bracket 4. A torsion spring 79 is sleeved on the outside of the screw 77. The two ends of the torsion spring 79 are fixedly connected to the base plate 76 and the gear 78 respectively. A threaded sleeve 710 is threaded to the outside of the screw 77. A sliding groove 711 is opened inside the turntable 6.

[0025] The guide rod is fixedly connected inside the slide groove 711, and the moving plate 712 is slidably connected to the guide rod to maintain the stable movement of the moving plate 712.

[0026] A movable plate 712 is fixedly connected to the outer side of the threaded sleeve 710. The movable plate 712 is slidably connected to the slide groove 711. An auxiliary pressure plate 713 is fixedly connected to the top of the movable plate 712. A connecting rod 714 is slidably connected inside the auxiliary pressure plate 713. Two upper and lower connecting rods 714 are slidably connected inside each auxiliary pressure plate 713. One end of the connecting rod 714 is fixedly connected to the rear arc plate 715. A second spring 716 is sleeved on the outer side of the connecting rod 714. The two ends of the second spring 716 are fixedly connected to the auxiliary pressure plate 713 and the rear arc plate 715 respectively. An outer plate 7161 is fixedly connected to the other end of the connecting rod 714. Rear side strips 717 are fixedly connected to both sides of the rear arc plate 715. Two upper and lower push rods 718 are slidably connected inside the rear side strips 717. A fixed plate 719 is fixedly connected to one side of the front of the turntable 6.

[0027] The limiting unit includes a rear arc plate 715 and a front arc plate 721 that are slidably mounted on the top of the turntable 6. The rear arc plate 715 and the front arc plate 721 can move in the horizontal longitudinal direction and are driven synchronously to assist in limiting the compression detection of the shock absorber body 15.

[0028] A U-shaped tube 720 is fixedly connected inside the fixed plate 719. The same front side strip 722 is slidably connected to the outer sides of the upper and lower push rods 718. A front arc plate 721 is fixedly connected between the two front side strips 722. A spring 723 is sleeved on the outer side of the push rod 718. The two ends of the spring 723 are fixedly connected to the upper part of the U-shaped tube 720 and the front side strip 722, respectively. A moving rod 724 is slidably connected to the lower part of the U-shaped tube 720. A vertical strip 725 is fixedly connected to one end of the moving rod 724. The vertical strip 725 abuts against the front side strip 722. A spring 726 is sleeved on the outer side of the moving rod 724. The two ends of the spring 726 are fixedly connected to the lower part of the U-shaped tube 720 and the front side strip 722, respectively.

[0029] Sealing rings are provided at the connection between push rod 718 and U-tube 720, and at the connection between moving rod 724 and U-tube 720, to reduce hydraulic oil leakage inside U-tube 720.

[0030] Among them, damping blocks are provided at both ends of spring 1 73, spring 2 716, spring 3 723 and spring 4 726 to reduce their reciprocating vibration and maintain stable telescopic use.

[0031] Example 1: As Figure 3 - Figure 10As shown, the operator fixes the top of the shock absorber body 15 to the upper mounting plate 11 with bolts, and the bottom of the shock absorber body 15 to the lower mounting plate 12 with bolts. Then, the servo motor 5 is started. The servo motor 5 drives the turntable 6 to rotate slowly. The turntable 6 drives the shock absorber body 15 and the contact plate 10 to rotate. The gear 78 meshes with the arc-shaped toothed plate 75, so that the gear 78 will rotate on its own axis while revolving around the sun. The gear 78 drives the screw 77 to rotate, and the gear 78 acts on the torsion spring 79. The rotation of the screw 77 will drive the screw sleeve 710 and the moving plate 712 to move. The moving plate 712 slides inside the slide groove 711 and drives the auxiliary pressure plate 713 to move.

[0032] The auxiliary pressure plate 713 drives the rear side strip 717 to move via the second spring 716. The rear side strip 717 drives the rear arc plate 715 to approach the back of the shock absorber body 15. The rear side strip 717 slides into the U-shaped tube 720 via the push rod 718 and squeezes the hydraulic oil inside the U-shaped tube 720. The hydraulic oil then pushes the moving rod 724 to move. The moving rod 724 drives the vertical strip 725 to move. The vertical strip 725 stretches the fourth spring 726 and pushes the front side strip 722 to move. The front side strip 722 drives the front arc plate 721 to approach the front of the shock absorber body 15, thereby simultaneously limiting the front and rear sides of the shock absorber body 15. Combined with the left and right side limits when the shock absorber body 15 is fixed, multi-directional fixation is achieved. This reduces the vertical tilt of the shock absorber body 15 during compression testing and improves the accuracy of compression testing.

[0033] Simultaneously, turntable 6 drives push rod 16 to rotate. Push rod 16 first presses the inclined surface of sliding seat 74, which will cause sliding seat 74 to rise. Sliding seat 74 drives slide plate 72 to rise. Sliding plate 72 compresses spring 73. When sliding seat 74 separates from push rod 16, the elastic force of spring 73 causes slide plate 72 and sliding seat 74 to press down. Sliding seat 74 compresses contact plate 10. Contact plate 10 compresses shock absorber body 15, thereby realizing compression detection. Contact plate 10 drives detection plate 13 to move. Displacement sensor 14 detects the moving distance of detection plate 13, which facilitates the detection of compression and contraction distance of shock absorber body 15. When gear 78 separates from arc toothed plate 75, rear arc plate 715 and front arc plate 721 slide and reset, which facilitates subsequent compression testing.

[0034] like Figure 1 , Figure 3 and Figure 11 - Figure 13 As shown, an auxiliary component 8 is provided at the top center of the turntable 6. The auxiliary component 8 is used to assist in limiting the detection of the shock absorber body 15. The auxiliary component 8 includes a rear plate 81 and a front plate 84 fixedly connected to the top of the turntable 6. A drive motor 82 is fixedly installed on the outer side of the rear plate 81. A lead screw 83 is fixedly connected to the output end of the drive motor 82. The lead screw 83 is rotatably connected to the front plate 84.

[0035] An adjusting plate 85 is threadedly connected to the outer side of the front plate 84. The bottom of the adjusting plate 85 is in contact with the turntable 6. A horizontal plate 86 is fixedly connected to the outer side of the adjusting plate 85. A fitting plate 87 is fixedly connected to the side of the horizontal plate 86 away from the adjusting plate 85.

[0036] The contact plate 10 is fixed to the two slide bars 9 by bolts. The bottom of the contact plate 10 is fixedly connected to the upper mounting plate 11, and the top of the turntable 6 is fixedly connected to the lower mounting plate 12. The lower mounting plate 12 is located directly below the upper mounting plate 11.

[0037] A detection plate 13 is fixedly connected to the outer side of the contact plate 10. A displacement sensor 14 is also fixedly installed on the top of the turntable 6. The displacement sensor 14 and the detection plate 13 are located on the same vertical axis. A push rod 16 is also fixedly installed on the top of the turntable 6.

[0038] Example 2: Figure 11 - Figure 13 As shown, when the drive motor 82 is started, the drive motor 82 drives the lead screw 83 to rotate, the lead screw 83 drives the adjusting plate 85 to move, the adjusting plate 85 drives the horizontal plate 86 to move, the horizontal plate 86 drives the bonding plate 87 to move, the bonding plate 87 approaches the outer plate 7161 and presses the outer plate 7161, the outer plate 7161 drives the rear arc plate 715 to move through the connecting rod 714, thereby increasing the clamping force on the rear arc plate 715 and further reducing the vertical deviation of the shock absorber body 15 during the compression test.

[0039] Working principle: When using this device, firstly, as... Figure 1 - Figure 13As shown, the top of the shock absorber body 15 is fixed to the upper mounting plate 11 with bolts, and the bottom of the shock absorber body 15 is fixed to the lower mounting plate 12 with bolts. Then, the servo motor 5 is started, and the turntable 6 drives the shock absorber body 15 and the contact plate 10 to rotate. The gear 78 meshes with the arc-shaped toothed plate 75, so that the gear 78 will rotate on its own axis while revolving around the center. The gear 78 drives the screw 77 to rotate, and the gear 78 acts on the torsion spring 79. The rotation of the screw 77 will drive the screw sleeve 710 and the moving plate 712 to move. The moving plate 712 slides inside the slide groove 711 and drives the auxiliary pressure plate 713 to move. The auxiliary pressure plate 713 drives the rear side strip 717 to move through the second spring 716. The rear side strip 717 drives the rear arc plate 715 to approach the back of the shock absorber body 15. The rear side strip 717 slides into the U-shaped tube 720 through the push rod 718 and squeezes the U-shaped tube. The hydraulic oil inside pipe 720 pushes the moving rod 724 to move. The moving rod 724 drives the vertical bar 725 to move. The vertical bar 725 stretches the spring 726 and pushes the front side bar 722 to move. The front side bar 722 drives the front arc plate 721 to approach the front of the shock absorber body 15, thereby simultaneously limiting the front and rear sides of the shock absorber body 15. This is in conjunction with the left and right side limiting when the shock absorber body 15 is fixed. At the same time, the turntable 6 drives the push rod 16 to rotate. The push rod 16 first squeezes the inclined surface of the sliding seat 74, which will drive the sliding seat 74 to rise. The sliding seat 74 drives the slide plate 72 to rise. The slide plate 72 compresses the spring 73. When the sliding seat 74 separates from the push rod 16, the elastic force of the spring 73 drives the slide plate 72 and the sliding seat 74 to press down. The sliding seat 74 compresses the contact plate 10. The contact plate 10 squeezes the shock absorber body 15, thereby realizing the compression detection.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shock absorber performance testing device for vehicle engineering, comprising a test box (1), a shock absorber body (15) and a lower plate (2) fixedly connected to the bottom of the test box (1), wherein a door (3) is hinged to one side of the front of the test box (1). Its features are, Also includes: The bottom surface of the test box (1) is fixedly installed with a mounting frame (4), and a servo motor (5) is fixedly installed inside the mounting frame (4). The output end of the servo motor (5) passes through the mounting frame (4) and is fixedly connected to a turntable (6). A detection component (7) is provided on one side of the top of the turntable (6), and an auxiliary component (8) is provided in the middle of the top of the turntable (6). The auxiliary component (8) is used to assist in limiting the detection of the shock absorber body (15). The detection assembly (7) includes a rotating unit and a limiting unit. The rotating unit includes two slide rods (9) that are vertically slidably installed inside the turntable (6). The top of the two slide rods (9) is fixedly installed with the same contact plate (10). Sliding seats (74) are also symmetrically installed on both sides of the inner wall of the detection box (1). The sliding seats (74) can move up or down along the height direction of the detection box (1). The limiting unit includes a rear arc plate (715) and a front arc plate (721) slidably mounted on the top of the turntable (6). The rear arc plate (715) and the front arc plate (721) can move in the horizontal longitudinal direction and are driven synchronously to assist in limiting the compression detection of the shock absorber body (15).

2. The shock absorber performance testing device for vehicle engineering according to claim 1, characterized in that: The inner walls of the test box (1) are symmetrically and vertically fixedly connected with side rods (71). The outer sides of the side rods (71) are slidably connected with slide plates (72). The upper outer side of the side rods (71) is fitted with a spring (73). The top of the spring (73) is fixedly connected to the inner top surface of the test box (1). The bottom of the spring (73) is fixedly connected to the slide plate (72). The slide plate (72) fits against the inner wall of the test box (1). The slide plate (72) is fixedly connected to the sliding seat (74).

3. The shock absorber performance testing device for vehicle engineering according to claim 2, characterized in that: Arc-shaped toothed plates (75) are symmetrically fixedly connected to the lower sides of the inner wall of the detection box (1). A base plate (76) is fixedly connected to one side of the bottom of the turntable (6). A screw (77) is rotatably connected inside the base plate (76). A gear (78) is fixedly connected to the side of the screw (77) away from the mounting bracket (4). A torsion spring (79) is sleeved on the outside of the screw (77). The two ends of the torsion spring (79) are fixedly connected to the base plate (76) and the gear (78) respectively. A threaded sleeve (710) is threaded on the outside of the screw (77). A sliding groove (711) is opened inside the turntable (6).

4. The shock absorber performance testing device for vehicle engineering according to claim 3, characterized in that: A movable plate (712) is fixedly connected to the outer side of the screw sleeve (710). The movable plate (712) is slidably connected to the slide groove (711). An auxiliary pressure plate (713) is fixedly connected to the top of the movable plate (712). A connecting rod (714) is slidably connected inside the auxiliary pressure plate (713). One end of the connecting rod (714) is fixedly connected to the rear arc plate (715). A second spring (716) is sleeved on the outer side of the connecting rod (714). The two ends of the second spring (716) are fixedly connected to the auxiliary pressure plate (713) and the rear arc plate (715) respectively. An outer plate (7161) is fixedly connected to the other end of the connecting rod (714). Rear side strips (717) are fixedly connected to both sides of the rear arc plate (715). Two upper and lower push rods (718) are slidably connected inside the rear side strips (717). A fixed plate (719) is fixedly connected to one side of the front of the turntable (6).

5. The shock absorber performance testing device for vehicle engineering according to claim 4, characterized in that: The fixed plate (719) is internally fixedly connected to a U-shaped tube (720). The outer sides of the two upper and lower push rods (718) are slidably connected to the same front side strip (722). The front side strips (722) on both sides are fixedly connected to a front arc plate (721). The outer side of the push rod (718) is sleeved with a spring three (723). The two ends of the spring three (723) are fixedly connected to the upper part of the U-shaped tube (720) and the front side strip (722) respectively. The lower part of the U-shaped tube (720) is slidably connected to a moving rod (724). One end of the moving rod (724) is fixedly connected to a vertical strip (725). The vertical strip (725) abuts against the front side strip (722). The outer side of the moving rod (724) is sleeved with a spring four (726). The two ends of the spring four (726) are fixedly connected to the lower part of the U-shaped tube (720) and the front side strip (722) respectively.

6. The shock absorber performance testing device for vehicle engineering according to claim 1, characterized in that: The auxiliary component (8) includes a rear plate (81) and a front plate (84) fixedly connected to the top of the turntable (6). A drive motor (82) is fixedly installed on the outer side of the rear plate (81). A lead screw (83) is fixedly connected to the output end of the drive motor (82). The lead screw (83) is rotatably connected to the front plate (84).

7. The shock absorber performance testing device for vehicle engineering according to claim 6, characterized in that: An adjusting plate (85) is threadedly connected to the outer side of the front plate (84). The bottom of the adjusting plate (85) is in contact with the turntable (6). A horizontal plate (86) is fixedly connected to the outer side of the adjusting plate (85). A bonding plate (87) is fixedly connected to the side of the horizontal plate (86) away from the adjusting plate (85).

8. The shock absorber performance testing device for vehicle engineering according to claim 1, characterized in that: The contact plate (10) is fixed to the two slide bars (9) by bolts. The bottom of the contact plate (10) is fixedly connected to the upper mounting plate (11), and the top of the turntable (6) is fixedly connected to the lower mounting plate (12). The lower mounting plate (12) is located directly below the upper mounting plate (11).

9. The shock absorber performance testing device for vehicle engineering according to claim 1, characterized in that: A detection plate (13) is fixedly connected to the outside of the contact plate (10), and a displacement sensor (14) is fixedly installed on the top of the turntable (6). The displacement sensor (14) and the detection plate (13) are located on the same vertical axis. A push rod (16) is also fixedly installed on the top of the turntable (6).

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