Shock absorber fatigue testing device and testing method thereof

Abstract

The invention belongs to the technical field of shock absorber testing devices, and particularly relates to a shock absorber fatigue testing device and a testing method thereof.The testing device comprises a base and a support, a reciprocating driving mechanism is installed in the base, a testing area is arranged between the support and the base, and an upper connecting piece and a lower connecting piece are installed in the testing area; a positioning mechanism and a load bearing mechanism are arranged in the upper connecting piece, each of the upper connecting piece and the lower connecting piece comprises an X-direction deflection assembly and a Y-direction deflection assembly, and each of the upper connector and the lower connector comprises the X-direction deflection assembly and the Y-direction deflection assembly, so that after the upper connector and the lower connector are installed, after X-direction deflection exists, the upper connector and the lower connector can be fixed conveniently. The shock absorber testing device can also deflect in the Y direction, so that the shock absorber can be tested and can be closer to the actual use condition, and the performance of the shock absorber and the accuracy of durability detection are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shock absorber testing devices, and in particular relates to a shock absorber fatigue testing device and a testing method thereof. Background Art

[0002] Shock absorbers are important components of motorcycles and other vehicles. Their main function is to support the weight of the vehicle and control vibration. The spring provides rigid support, while the damper absorbs vibration energy by controlling friction and preventing the spring from bouncing repeatedly, thereby improving the stability and comfort of the vehicle.

[0003] In practical applications, shock absorbers are subjected to frequent vibrations and loads, so it is very important to test their fatigue performance and lifespan. For example, Chinese patent application No. (CN202410833317.7) discloses a shock absorber fatigue test bench. By rotating the lead screw, the lead screw drives the upper connecting member to change its position on the box body. Since the upper connecting member is connected to the second end of the shock absorber, this position change will directly cause the inclination of the shock absorber to change. By adjusting the lead screw, the inclination of the shock absorber can be accurately controlled, thereby simulating the performance of the shock absorber at different inclination angles. However, the shock absorber can only be tilted in a single direction. In the actual driving process of the motorcycle, in addition to the shock absorber being usually installed at an angle during installation, when turning (such as turning, overtaking, changing lanes, etc.), the radial direction of the tire is often not perpendicular to the ground. That is to say, the shock absorber is often tilted in two directions in the horizontal direction. Therefore, the tilt adjustment in a single direction cannot ensure that the test is close to the actual use situation, so it is impossible to more accurately evaluate the performance and durability of the shock absorber, which needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a shock absorber fatigue testing device and a testing method thereof in order to solve the above-mentioned technical problems, so as to ensure that the shock absorber test is closer to the actual use and improve the accuracy of evaluating the shock absorber performance and durability.

[0005] In view of this, the present invention provides a shock absorber fatigue testing device, comprising: The frame includes a base and a bracket, wherein a test area is provided between the base and the bracket, and a reciprocating drive mechanism is installed in the base; An upper connecting member, comprising an upper supporting plate slidably connected to the bracket and an upper connecting head mounted on the upper supporting plate; A lower connecting member, comprising a lower supporting plate connected to the output end of the reciprocating drive mechanism and a lower connecting head mounted on the lower supporting plate; A positioning mechanism is installed between the upper support plate and the upper connecting head and is used for connecting the upper connecting head to the upper support plate and adjusting and positioning the upper connecting head in the horizontal direction; A load-bearing mechanism, mounted on the upper support plate and used to apply a load to the upper connector; Wherein, the upper connector and the lower connector both include an X-direction deflection component and a Y-direction deflection component.

[0006] In the above technical solution, further, the Y-direction deflection component includes: The housing is connected to the positioning mechanism and has an opening on a side away from the positioning mechanism; The adjusting ball is installed in the housing and has a through hole along the X direction; A support rod is installed in the through hole, and both ends are connected to the shell respectively; An adjusting member is installed in the housing and is used to drive the adjusting ball to deflect in the Y direction; A locking member is installed in the housing and is used to adjust the locking of the ball after it is deflected in the Y direction; The X-direction deflection assembly is connected to the side where the adjusting ball is located at the opening.

[0007] In the above technical solution, further, the adjusting member includes: Teeth, mounted on the surface of the adjusting ball away from the opening; A gear, mounted in the housing and meshing with the teeth; The support seat is installed in the housing and is axially provided with a connecting shaft for driving the gear to rotate, and the connecting shaft extends out of the housing and is provided with an adjusting knob; The scale is installed on the surface of the shell and is set corresponding to the adjusting knob and is used to indicate the Y-direction deflection angle of the adjusting ball.

[0008] In the above technical solution, further, the locking member includes: A locking claw is installed in the housing and one end of the locking claw is wrapped around the surface of the adjusting ball; A support shaft is connected to the surface of the locking claw at one end away from the adjusting ball and is rotatably connected to the inner wall of the housing; The screw rod is installed in the housing, and its two ends are respectively connected to the support seat and the housing bearing; The first nut is sleeved on the screw rod and is transmission-connected to the screw rod, and is provided with a connecting rod connected to the locking claw; A driving member, mounted on the housing and used to drive the screw to rotate so as to cause the locking claw to clamp the adjusting ball; Wherein, two ends of the connecting rod are respectively hingedly connected to the locking claw and the first nut.

[0009] In the above technical solution, further, the driving member includes: The driven gear is sleeved on the screw rod and connected with the screw rod by a flat key and is located on a side of the screw rod away from the support seat; The bearing seat is installed in the housing and is connected to a driving shaft through a bearing, and a driving gear is installed at one end of the driving shaft to mesh with a driven gear; The sleeve is sleeved on the end of the driving shaft away from the driving gear and is key-connected to the driving shaft and can drive the shaft to slide axially; A bolt is axially mounted on an end of the sleeve away from the drive shaft and is threadedly connected to the housing, with the bolt head located outside the housing; The spring is sleeved on the surface of the bolt located outside the shell, and two ends of the spring are respectively in contact with the bolt head and the surface of the shell.

[0010] In the above technical solution, further, the locking member also includes: The elastic block is filled between the surface of the locking claw and the inner wall of the shell.

[0011] In the above technical solution, further, the positioning mechanism includes: A positioning plate is connected to the upper support plate and has a plurality of positioning holes in a matrix; An electromagnet is mounted on the upper connector and is used to adsorb the upper connector onto the positioning plate; A positioning column is installed on the upper connector and is matched with the positioning hole; There are multiple positioning posts arranged in a diamond shape, and at least two are provided along the X direction and the Y direction.

[0012] In the above technical solution, further, the load-bearing mechanism includes: The box body is mounted on the upper support plate, has a chamber formed inside, and is centrally arranged on the upper support plate; The weight is installed in the chamber and is in the shape of a strip; An elastic band is installed in the chamber and has a plurality of insertion openings, and is used to fix the weight after passing through the plurality of insertion openings; The elastic band is multi-layered, and the insertion opening is a regular hexagon.

[0013] In the above technical solution, further, it also includes: The guide column is installed in the bracket, and the upper support plate and the lower support plate are both provided with round holes adapted to the guide column, and are slidably connected to the guide column through a guide sleeve; One end of the threaded rod is connected to the upper connecting piece, and the other end passes through the top surface of the bracket and is threadedly connected to a second nut.

[0014] The present invention provides a testing method for a shock absorber fatigue testing device, comprising the following steps: S1: By simulating the installation inclination angle of the shock absorber in the two-wheeled vehicle, a suitable X-direction deflection angle is selected, and the X-direction deflection angle of the shock absorber during the driving of the two-wheeled vehicle is simulated, and a suitable Y-direction deflection angle is selected; S2: After the upper connector is moved to the corresponding position through the X-direction deflection angle and the Y-direction deflection angle, the guide column is inserted into the circular hole; S3: energize the electromagnet to adsorb the upper connector onto the positioning plate; S4: Temporarily fix the upper connecting member by adjusting the height of the second nut; S5: Connect the two ends of the shock absorber to the upper connecting piece and the lower connecting piece respectively; S6: Fine-tune by adjusting the knob and the scale, rotate the adjusting balls of the upper connector and the lower connector to the same angle, and drive the locking claws to clamp and lock the adjusting balls by turning the bolts; S7: Place weights of appropriate weight in the box, pass the weights through multiple insertion holes, and place them in multiple layers; S8: Loosen the second nut to allow the upper connecting member to press down naturally; S9: Start the reciprocating drive mechanism to repeatedly lift the lower connecting piece to perform fatigue test on the shock absorber.

[0015] The beneficial effects of the present invention are: 1. By making the upper connector and the lower connector both include an X-direction deflection assembly and a Y-direction deflection assembly, it is convenient for the upper connector and the lower connector to deflect in the Y direction after installation after the X-direction deflection, so that the shock absorber can be tested more closely to the actual use situation, and the accuracy of the performance and durability test of the shock absorber can be improved.

[0016] 2. By turning the adjusting knob to drive the adjusting ball to rotate, the convenience of adjustment can be effectively improved, and the adjusting ball can be effectively locked by the locking piece to ensure the stability of the Y-direction deflection angle when testing the shock absorber, thereby improving the accuracy of the detection.

[0017] 3. Through the multiple positioning holes in a matrix on the positioning plate, positioning is performed through the positioning columns, and then locking is performed through the adsorption of the electromagnet, thereby improving the convenience of the upper connection installation, and setting the positioning columns into multiple and arranged in a diamond shape, it can be ensured that at least two positioning columns are included along the X direction or the Y direction, thereby effectively improving the accuracy of the upper connector after installation, ensuring that the X-direction deflection assembly in the upper connector and the lower connector is aligned with the X direction, and the Y-direction deflection assembly is aligned with the Y direction, thereby improving the accuracy of the shock absorber installation and ensuring the accuracy of the test structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a front view of the present invention; Figure 3 The present invention Figure 2Sectional view at AA in the middle; Figure 4 The present invention Figure 3 The enlarged view of point B in the middle; Figure 5 The present invention Figure 2 Sectional view at CC; Figure 6 The present invention Figure 5 The enlarged view of point D in the middle; Figure 7 The present invention Figure 5 Sectional view at EE; Figure 8 The present invention Figure 7 The enlarged view of F in the middle; The markings in the figure are as follows: 1, base; 2, bracket; 3, upper support plate; 4, upper connector; 5, lower support plate; 6, lower connector; 7, positioning mechanism; 70, positioning plate; 71, positioning hole; 72, electromagnet; 73, positioning column; 8, weight-bearing mechanism; 80, box; 81, chamber; 82, weight; 83, elastic band; 84, insertion; 9, Y-direction deflection assembly; 90, shell; 91, opening; 92, adjustment ball; 93, through hole; 94, support rod; 95, adjustment member; 950, teeth; 951, gear; 95 2. Support seat; 953. Connecting shaft; 954. Adjusting knob; 955. Scale; 956. Pointer; 96. Locking piece; 960. Locking claw; 961. Support shaft; 962. Screw rod; 963. First nut; 964. Connecting rod; 965. Elastic block; 97. Driving piece; 970. Driven gear; 971. Bearing seat; 972. Driving shaft; 973. Active gear; 974. Sleeve; 975. Bolt; 976. Spring; 10. X-direction deflection assembly; 11. Guide column; 12. Threaded rod; 13. Second nut. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0020] Embodiment 1: This embodiment provides a shock absorber fatigue testing device, comprising: The frame comprises a base 1 and a bracket 2, wherein a test area is provided between the base 1 and the bracket 2, and a reciprocating drive mechanism is installed in the base 1; An upper connecting member, comprising an upper supporting plate 3 slidably connected to the bracket 2 and an upper connecting head 4 mounted on the upper supporting plate 3; The lower connecting member comprises a lower supporting plate 5 connected to the output end of the reciprocating driving mechanism and a lower connecting head 6 installed on the lower supporting plate 5; The positioning mechanism 7 is installed between the upper support plate 3 and the upper connector 4 and is used for connecting the upper connector 4 to the upper support plate 3 and adjusting and positioning the upper connector 4 in the horizontal direction; A load-bearing mechanism 8, mounted on the upper support plate 3, and used to apply a load to the upper connector 4; Wherein, the upper connector 4 and the lower connector 6 both include an X-direction deflection assembly 10 and a Y-direction deflection assembly 9; Meanwhile, the specific structure of the reciprocating drive mechanism is the prior art. Specifically, a motor can be used to drive the cam, or a motor can be used to drive the disc to drive the connecting rod 964 to drive the lower connecting member to rise and fall, that is, the lower connecting member can be driven to rise and fall reciprocally, which will not be repeated here. The X-direction deflection assembly 10 may be a U-shaped frame, and locked by bolts 975 and nuts, so that the shock absorber can rotate along the bolts 975; Furthermore, it is assumed that the X direction is the installation tilt angle direction of the shock absorber when it is installed on the motorcycle, and the Y direction is the tilt angle direction of the shock absorber toward both sides of the motorcycle when the shock absorber is turning.

[0021] It can be seen from the present embodiment that the upper connector 4 and the lower connector 6 both include the X-direction deflection assembly 10 and the Y-direction deflection assembly 9, so that the upper connector 4 and the lower connector 6 can be deflected in the Y-direction after being installed and deflected in the X-direction, thereby enabling the shock absorber to be tested more closely to the actual use situation, thereby improving the accuracy of the performance and durability test of the shock absorber; The positioning mechanism 7 can facilitate the control and setting of the deflection angle, thereby improving the accuracy of the performance and durability testing of the shock absorber; The load-bearing mechanism 8 can be used to simulate the load on the shock absorber caused by the weight of the vehicle body and the weight of the driver in real situations, which is closer to actual use and improves the accuracy of the performance and durability testing of the shock absorber.

[0022] Embodiment 2: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the Y-direction deflection assembly 9 includes: The housing 90 is connected to the positioning mechanism 7 and has an opening 91 on a side away from the positioning mechanism 7; The adjusting ball 92 is installed in the housing 90 and has a through hole 93 along the X direction; The support rod 94 is installed in the through hole 93, and the two ends are respectively connected to the housing 90; The adjusting member 95 is installed in the housing 90 and is used to drive the adjusting ball 92 to deflect in the Y direction; A locking member 96 is installed in the housing 90 and is used to adjust the locking of the ball 92 after it is deflected in the Y direction; The X-direction deflection assembly 10 is connected to the side of the adjusting ball 92 located at the opening 91 , and the specific U-shaped frame is fixedly connected to the adjusting ball 92 .

[0023] It can be seen from this embodiment that by rotating the adjusting knob 954 to drive the adjusting ball 92 to rotate, the convenience of adjustment can be effectively improved, and the adjusting ball 92 can be effectively locked by the locking member 96 to ensure the stability of the Y-axis deflection angle when testing the shock absorber, thereby improving the accuracy of detection.

[0024] Embodiment 3: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the adjustment member 95 includes: The teeth 950 are mounted on the surface of the adjusting ball 92 away from the opening 91; Gear 951 is installed in the housing 90 and meshes with the teeth 950; The support seat 952 is installed in the housing 90 and is axially mounted with a connecting shaft 953 for driving the gear 951 to rotate, and the connecting shaft 953 extends out of the housing 90 and is provided with an adjusting knob 954; A scale 955 is mounted on the surface of the housing 90 and is arranged corresponding to the adjustment knob 954 and is used to indicate the angle of the Y-direction deflection of the adjustment ball 92; The adjusting knob 954 is provided with a pointer 956, and the teeth 950 and the adjusting ball 92 are welded; At the same time, the reading on the scale 955 can correspond to the rotation angle of the adjusting ball 92. For example, if the adjusting ball 92 rotates 1°, the scale 955 will be represented by a value of 1° per grid.

[0025] It can be seen from this embodiment that the stability and accuracy of adjusting the angle of the adjusting ball 92 are improved through the setting of the gear 951 and the tooth 950, and the rotation angle of the adjusting ball 92 is made to correspond to the reading on the scale 955 through the rotation of the connecting shaft 953, so as to facilitate the understanding of the rotation angle of the adjusting ball 92 and improve the speed of adjusting the angle of the adjusting ball 92.

[0026] Embodiment 4: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the locking member 96 includes: The locking claw 960 is installed in the housing 90, and one end of the locking claw 960 is wrapped around the surface of the adjusting ball 92; The support shaft 961 is connected to the surface of the locking claw 960 away from the adjusting ball 92 and is rotatably connected to the inner wall of the housing 90; The screw rod 962 is installed in the housing 90, and its two ends are connected to the support seat 952 and the bearing of the housing 90 respectively; The first nut 963 is sleeved on the screw rod 962 and is transmission-connected to the screw rod 962, and is provided with a connecting rod 964 connected to the locking claw 960; A driving member 97 is mounted on the housing 90 and is used to drive the screw rod 962 to rotate so as to cause the locking claw 960 to clamp the adjusting ball 92; The two ends of the connecting rod 964 are respectively hingedly connected to the locking claw 960 and the first nut 963; Meanwhile, two locking claws 960 may be used and symmetrically arranged corresponding to the adjustment balls 92 .

[0027] It can be seen from the present embodiment that the position of the first nut 963 in the axial direction of the screw rod 962 is adjusted by the driving member 97, and then the locking claw 960 is driven by the connecting rod 964 to clamp and release the adjusting ball 92, thereby ensuring the convenience of locking and releasing the adjusting ball 92, and the locking claw 960 has one end wrapped around the surface of the adjusting ball 92, which can improve the stability of the locking claw 960 in locking the adjusting ball 92.

[0028] Embodiment 5: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The driving member 97 includes: The driven gear 970 is sleeved on the screw rod 962 and is keyed to the screw rod 962 and is located on a side of the screw rod 962 away from the support seat 952; The bearing seat 971 is installed in the housing 90 and is connected to a driving shaft 972 through a bearing, and a driving gear 973 is installed at one end of the driving shaft 972 to mesh with the driven gear 970; The sleeve 974 is sleeved on the end of the driving shaft 972 away from the driving gear 973 and is connected to the driving shaft 972 with a flat key, and can drive the shaft 972 to slide axially; The bolt 975 is axially mounted on one end of the sleeve 974 away from the driving shaft 972 and is threadedly connected to the housing 90, and the head of the bolt 975 is located outside the housing 90; The spring 976 is sleeved on the surface of the bolt 975 located outside the housing 90, and the two ends thereof are respectively in contact with the head of the bolt 975 and the surface of the housing 90; The threaded connection between the bolt 975 and the housing 90 can be achieved by installing a threaded barrel on the housing 90, and installing the bolt 975 through the threaded connection between the bolt 975 and the threaded barrel; The driving gear 973 and the driven gear 970 can be connected by a transmission via an intersecting shaft gear 951 .

[0029] It can be seen from the present embodiment that, through the above-mentioned structure, it is convenient to drive the screw rod 962 by rotating the bolt 975, so as to ensure the adjustment of the first nut 963, and then it is convenient to drive the locking claw 960, and the flat key connection between the sleeve 974 and the driving shaft 972 is adopted, so that the two can be relatively displaced in the axial direction, and then the driving shaft 972 and the active gear 973 can be driven by the bolt 975, and at the same time, the threaded connection between the bolt 975 and the housing 90 can be locked, so as to avoid the locking claw 960 loosening the clamping of the adjusting ball 92 after the force is lost; and the setting of the spring 976 can further improve the connection strength between the bolt 975 and the housing 90, so as to avoid loosening of the bolt 975 after being locked, and further ensure the clamping of the adjusting ball 92 by the locking claw 960.

[0030] Embodiment 6: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the locking member 96 also includes: The elastic block 965 is filled between the surface of the locking claw 960 and the inner wall of the housing 90; The elastic block 965 may be made of rubber.

[0031] It can be seen from the present embodiment that, through the setting of the elastic block 965, the locking claw 960 can be closely attached to the adjusting ball 92, that is, friction is applied to the surface of the adjusting ball 92, thereby improving the stability when adjusting through the adjusting knob 954, and combined with the bolt 975 connection between the bolt 975 and the shell 90, it is possible to prevent the locking claw 960 from being stretched open, thereby ensuring the stabilizing effect of the locking claw 960 on the adjusting ball 92 and preventing the adjusting ball 92 from loosening.

[0032] Embodiment 7: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the positioning mechanism 7 includes: The positioning plate 70 is connected to the upper support plate 3 and has a plurality of positioning holes 71 in a matrix; The electromagnet 72 is mounted on the upper connector 4 and is used to adsorb the upper connector 4 onto the positioning plate 70; The positioning column 73 is installed on the upper connector 4 and matches with the positioning hole 71; There are multiple positioning posts 73 arranged in a rhombus shape, and at least two are provided along the X direction and the Y direction; Meanwhile, the positioning plate 70 is made of a material that can be adsorbed by the electromagnet 72, such as an iron alloy; Moreover, the spacing between two adjacent positioning holes 71 can be adaptively set according to the angles of the X-direction deflection and the Y-direction deflection. For example, the X-direction deflection can be set to 1-3° as a unit. Specifically, when the X-direction deflection is a value in the range of 1-3°, the positioning column 73 is offset by one positioning hole 71 in the X-direction. The Y-direction deflection can be set to 0.5-1°. Specifically, when the Y-direction deflection is a value in the range of 0.5-1°, the positioning column 73 is offset by one positioning hole 71 in the Y-direction. The specific spacing between the two positioning holes 71 can be calculated according to the Pythagorean theorem, which is a prior art and will not be repeated here. A sensor connected to the controller may be provided in the positioning hole 71 , specifically a pressure sensor. When the positioning column 73 is inserted into the positioning hole 71 , the controller may display the information, such as by setting a display screen for display.

[0033] It can be seen from the present embodiment that the positioning plate 70 is positioned by means of a plurality of positioning holes 71 in a matrix and by means of positioning posts 73, and then locked by means of adsorption of the electromagnet 72, thereby improving the convenience of the upper connection installation, and the positioning posts 73 are arranged in a plurality and in a diamond shape, so that at least two positioning posts 73 are included in the X direction or the Y direction, thereby effectively improving the accuracy of the upper connector 4 after installation, ensuring that the X-direction deflection assembly 10 in the upper connector 4 and the lower connector 6 is aligned with the X direction, and the Y-direction deflection assembly 9 is aligned with the Y direction, thereby improving the accuracy of the shock absorber installation and ensuring the accuracy of the test structure; By arranging a sensor in the positioning hole 71, it is convenient to display on the display screen whether the upper connector 4 is installed in place, thereby improving the installation accuracy of the upper connector 4 in the X and Y directions and ensuring the accuracy of the test.

[0034] Embodiment 8: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The load-bearing mechanism 8 includes: The box body 80 is mounted on the upper support plate 3 and has a chamber 81 formed therein and is centrally disposed on the upper support plate 3; The weight 82 is installed in the chamber 81 and is in the shape of a strip; The elastic band 83 is installed in the chamber 81 and has a plurality of insertion openings 84, and is used to fix the weight 82 after passing through the plurality of insertion openings 84; The elastic band 83 is multi-layered, and the insertion opening 84 is in the shape of a regular hexagon; At the same time, the weight 82 can be inserted into the insertion hole 84 in the elastic band 83 during installation by using a flat needle for sewing, which is a prior art and will not be described in detail here.

[0035] It can be seen from this embodiment that by arranging the box 80 in the center, the stability of the load placement is improved, and the stability of the shock absorber during the test is improved. In addition, by arranging the weight 82 in a strip shape and fixing the weight 82 with an elastic band 83, the stability of the placement of the weight 82 can be ensured when the upper connecting member is lifted and slid, thereby ensuring the stability of the load. At the same time, the elastic band 83 is provided with a plurality of regular hexagonal insertion openings 84, thereby further improving the fixing effect of the weights 82, and can be arranged in multiple layers, thereby facilitating the multi-layer arrangement of the weights 82, on the one hand ensuring the concentration of the center of gravity, and on the other hand improving the stability of the placement of most weights 82, and at the same time, the regular hexagonal insertion openings 84 facilitate the insertion of the weights 82, thereby ensuring the fixing effect of the multi-layer weights 82; Furthermore, by adopting the interlacing method of a flat needle such as sewing, two adjacent regular hexagonal sides can clamp the weight 82 , thereby improving the fixing effect of the elastic band 83 on the weight 82 .

[0036] Embodiment 9: This embodiment provides a shock absorber fatigue test device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including: The guide column 11 is installed in the bracket 2, and the upper support plate 3 and the lower support plate 5 are both provided with a circular hole adapted to the guide column 11, and are slidably connected to the guide column 11 through a guide sleeve; A threaded rod 12, one end of which is connected to the upper connecting piece, and the other end of which passes through the top surface of the bracket 2 and is threadedly connected to a second nut 13; The threaded rod 12 may be fixedly connected to the box body 80 .

[0037] It can be seen from the present embodiment that the guide column 11 can improve the stability of the upper support plate 3 and the lower support plate 5 during lifting and lowering, thereby ensuring the accuracy of the shock absorber performance and durability test, and the setting of the threaded rod 12 and the second nut 13 can provide auxiliary support when the shock absorber is connected to the upper connecting head 4 and the lower connecting head 6, thereby improving convenience.

[0038] Embodiment 10: This embodiment provides a testing method for a shock absorber fatigue testing device, which is characterized by comprising the following steps: S1: By simulating the installation inclination angle of the shock absorber in the two-wheeled vehicle, a suitable X-direction deflection angle is selected, and the X-direction deflection angle of the shock absorber during the driving of the two-wheeled vehicle is simulated, and a suitable Y-direction deflection angle is selected; S2: After the upper connector 4 is moved to the corresponding position by the X-direction deflection angle and the Y-direction deflection angle, the guide column 11 is inserted into the circular hole; S3: energize the electromagnet 72 to adsorb the upper connector 4 onto the positioning plate 70; S4: Temporarily fix the upper connecting member by adjusting the height of the second nut 13; S5: Connect the two ends of the shock absorber to the upper connecting piece and the lower connecting piece respectively; S6: Fine-tune by adjusting the knob 954 and the scale 955, rotate the adjusting balls 92 of the upper connector 4 and the lower connector 6 to the same angle, and drive the locking claw 960 to clamp and lock the adjusting balls 92 by rotating the bolt 975; S7: placing weights 82 of appropriate weight in the box 80, and placing the weights 82 through the plurality of insertion openings 84, and arranging the weights 82 in a multi-layer overlapping manner; S8: Loosen the second nut 13 so that the upper connecting member is pressed down naturally; S9: Start the reciprocating drive mechanism to repeatedly lift the lower connecting piece to perform fatigue test on the shock absorber.

[0039] It can be seen from this embodiment that after selecting the appropriate deflection angles in the X-direction and the Y-direction, the position of the upper connector 4 is first positioned and fixed, and then the two ends of the shock absorber are connected to improve the convenience of assembly, and by adjusting the knob 954 and the scale 955, the rotation stability and accuracy of the adjusting ball 92 can be ensured, and the locking claw 960 is locked by the bolt 975. The locking of the adjusting ball 92 can effectively improve the stability, avoid loosening during the fatigue test, and improve the accuracy of the performance and durability test of the shock absorber; The weights 82 are used to adjust the amount of weight, which improves convenience. The elastic band 83 is provided with insertion openings 84, which facilitates effective fixation of the multi-layer weights 82 and improves stability.

[0040] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A shock absorber fatigue testing device, characterized in that: include: A frame, comprising a base (1) and a bracket (2), wherein a test area is provided between the base (1) and the bracket (2), and a reciprocating drive mechanism is installed in the base (1); An upper connecting member, comprising an upper supporting plate (3) slidably connected to the bracket (2) and an upper connecting head (4) mounted on the upper supporting plate (3); A lower connecting member, comprising a lower supporting plate (5) connected to the output end of the reciprocating drive mechanism and a lower connecting head (6) mounted on the lower supporting plate (5); A positioning mechanism (7) is installed between the upper support plate (3) and the upper connecting head (4), and is used for connecting the upper connecting head (4) to the upper support plate (3) and adjusting and positioning the position of the upper connecting head (4) in a horizontal direction; A load-bearing mechanism (8) is mounted on the upper support plate (3) and is used to apply a load to the upper connecting head (4); Wherein, the upper connector (4) and the lower connector (6) both comprise an X-direction deflection assembly (10) and a Y-direction deflection assembly (9).

2. The shock absorber fatigue testing device according to claim 1, characterized in that: The Y-direction deflection assembly (9) comprises: A housing (90) is connected to the positioning mechanism (7) and has an opening (91) on a side away from the positioning mechanism (7); An adjusting ball (92) is installed in the housing (90) and is provided with a through hole (93) along the X direction; A support rod (94) is installed in the through hole (93), and both ends are respectively connected to the housing (90); An adjusting member (95) is installed in the housing (90) and is used to drive the adjusting ball (92) to deflect in the Y direction; A locking member (96) is installed in the housing (90) and is used to adjust the locking of the ball (92) after it is deflected in the Y direction; The X-direction deflection assembly (10) is connected to a side of the adjusting ball (92) located at the opening (91).

3. The shock absorber fatigue testing device according to claim 2, characterized in that: The adjusting member (95) comprises: The teeth (950) are mounted on the surface of the adjusting ball (92) away from the opening (91); A gear (951) is installed in the housing (90) and meshes with the teeth (950); A support seat (952) is installed in the housing (90) and is axially provided with a connecting shaft (953) for driving the gear (951) to rotate, and the connecting shaft (953) extends out of the housing (90) and is provided with an adjusting knob (954); A scale (955) is mounted on the surface of the housing (90) and is arranged corresponding to the adjustment knob (954) and is used to indicate the angle of the Y-direction deflection of the adjustment ball (92); Wherein, a pointer (956) is installed on the adjusting knob (954).

4. The shock absorber fatigue testing device according to claim 2, characterized in that: The locking member (96) comprises: A locking claw (960) is installed in the housing (90) and has one end wrapped around the surface of the adjusting ball (92); A support shaft (961) is connected to a surface of the locking claw (960) at one end away from the adjusting ball (92) and is rotatably connected to an inner wall of the housing (90); A screw rod (962) is installed in the housing (90), and two ends of the screw rod are respectively connected to the support seat (952) and the bearing of the housing (90); A first nut (963) is sleeved on the screw rod (962) and is transmission-connected to the screw rod (962), and is provided with a connecting rod (964) connected to the locking claw (960); A driving member (97) is mounted on the housing (90) and is used to drive the screw rod (962) to rotate so as to cause the locking claw (960) to clamp the adjusting ball (92); Wherein, both ends of the connecting rod (964) are hingedly connected to the locking claw (960) and the first nut (963) respectively.

5. The shock absorber fatigue testing device according to claim 4, characterized in that: The driving member (97) comprises: A driven gear (970) is sleeved on the screw rod (962), is key-connected to the screw rod (962), and is located on a side of the screw rod (962) away from the support seat (952); A bearing seat (971) is installed in the housing (90) and is connected to a driving shaft (972) through a bearing, and a driving gear (973) is installed at one end of the driving shaft (972) to mesh with a driven gear (970); A sleeve (974) is sleeved on an end of the driving shaft (972) away from the driving gear (973) and is key-connected to the driving shaft (972) and can drive the shaft (972) to slide axially; A bolt (975) is axially mounted on an end of the sleeve (974) away from the drive shaft (972) and is threadedly connected to the housing (90), with the head of the bolt (975) being located outside the housing (90); The spring (976) is sleeved on the surface of the bolt (975) located outside the housing (90), and two ends thereof are respectively in contact with the head of the bolt (975) and the surface of the housing (90).

6. The shock absorber fatigue testing device according to claim 4, characterized in that: The locking member (96) further comprises: The elastic block (965) is filled between the surface of the locking claw (960) and the inner wall of the housing (90).

7. The shock absorber fatigue testing device according to claim 1, characterized in that: The positioning mechanism (7) comprises: A positioning plate (70) connected to the upper support plate (3) and having a plurality of positioning holes (71) formed in a matrix; An electromagnet (72) is mounted on the upper connector (4) and is used to adsorb the upper connector (4) onto the positioning plate (70); A positioning column (73) is mounted on the upper connector (4) and is adapted to fit the positioning hole (71); There are multiple positioning posts (73) arranged in a diamond shape, and at least two are provided along the X direction and the Y direction.

8. The shock absorber fatigue testing device according to claim 1, characterized in that: The load-bearing mechanism (8) comprises: The box body (80) is mounted on the upper support plate (3), has a chamber (81) formed inside, and is centrally arranged on the upper support plate (3); A weight (82) is installed in the chamber (81) and is in the shape of a strip; An elastic band (83) is installed in the chamber (81) and has a plurality of insertion openings (84) and is used to pass the weight (82) through the plurality of insertion openings (84) for fixing; The elastic band (83) is multi-layered, and the insertion opening (84) is in the shape of a regular hexagon.

9. The shock absorber fatigue testing device according to claim 1, characterized in that: Also includes: A guide column (11) is installed in the bracket (2), and the upper support plate (3) and the lower support plate (5) are both provided with a circular hole adapted to the guide column (11), and are slidably connected to the guide column (11) via a guide sleeve; A threaded rod (12) has one end connected to the upper connecting piece and the other end passing through the top surface of the bracket (2) and being threadedly connected to a second nut (13).

10. A testing method for a shock absorber fatigue testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: By simulating the installation inclination angle of the shock absorber in the two-wheeled vehicle, a suitable X-direction deflection angle is selected, and the X-direction deflection angle of the shock absorber during the driving of the two-wheeled vehicle is simulated, and a suitable Y-direction deflection angle is selected; S2: After the upper connector (4) is moved to a corresponding position by means of an X-direction deflection angle and a Y-direction deflection angle, the guide column (11) is inserted into the circular hole; S3: energizing the electromagnet (72) to adsorb the upper connector (4) onto the positioning plate (70); S4: temporarily fixing the upper connecting member by adjusting the height of the second nut (13); S5: Connect the two ends of the shock absorber to the upper connecting piece and the lower connecting piece respectively; S6: Fine adjustment is performed by adjusting the knob (954) and the scale (955), the adjusting balls (92) of the upper connector (4) and the lower connector (6) are rotated to the same angle, and the locking claws are driven by rotating the bolt (975) to clamp and lock the adjusting balls (92); S7: placing weights (82) of appropriate weight in the box (80), and placing the weights (82) through the plurality of insertion openings (84) in a plurality of overlapping layers; S8: Loosen the second nut (13) so that the upper connecting member is pressed downward naturally; S9: Start the reciprocating drive mechanism to repeatedly lift the lower connecting piece to perform fatigue test on the shock absorber.

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