A dynamic mechanical testing machine for rubber dampers

Abstract

The present application relates to the technical field of mechanical testing, in particular to a kind of rubber shock absorber dynamic mechanical testing machine, including test frame component, the rear end of test frame component is connected with power unit component, one side of test frame component is connected with control instrument component, lifting mechanism is equipped on test frame component, lower pressing connecting piece is equipped on lifting mechanism, load-bearing component is installed in the upper end of test frame component, the lower end of lower pressing connecting piece is detachably connected with round pipe piece.The whole testing process is automatically controlled by control instrument component, the accuracy of loading and the repeatability of testing are ensured;Multi-dimensional, automatic determination of the mechanical properties of rubber material is realized;The positional relationship between round pipe piece and lifting disc piece can be adjusted as needed, and through this switching, the compression resistance and vibration impact resistance of rubber shock absorber can be tested as needed, improving the convenience and accuracy of detection.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing technology, and in particular to a dynamic mechanical testing machine for rubber vibration dampers. Background Technology

[0002] Rubber vibration dampers are key components in automotive suspension systems, powertrains, and rail transportation, primarily functioning to dampen vibrations, reduce noise, and isolate impacts. In actual service, dampers not only withstand static preload but also endure dynamic alternating loads with varying frequencies, complex amplitudes, and temperature variations. Therefore, accurately measuring the dynamic stiffness, loss factor (damping characteristics), and fatigue life of rubber vibration dampers is crucial for evaluating product performance and overall vehicle safety.

[0003] The multimodal mechanical testing device and method, with announcement number CN122108756A, includes a frame; a tooling table for placing the object under test; a loading mechanism for applying a load to the workpiece; a control module equipped with a controller and a motor, the controller being electrically connected to the motor to control the motor's movement, thereby driving the loading mechanism to move and apply the load; and a data acquisition module electrically connected to the controller to transmit the acquired load signals, mechanical properties, and electrical properties to the controller. According to this invention, it is possible to simulate the external forces that the object under test may experience during normal use, and to test the electrical and mechanical properties of the object under test under complex load conditions.

[0004] The above technical solution cannot achieve rapid switching between different testing methods, which is not conducive to efficiently testing different mechanical properties of the test object, so it needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dynamic mechanical testing machine for rubber vibration dampers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dynamic mechanical testing machine for rubber vibration dampers includes a test frame assembly, a power unit assembly connected to the rear end of the test frame assembly, a controller assembly connected to one side of the test frame assembly, a lifting mechanism on the test frame assembly, a pressing connector on the lifting mechanism, a bearing assembly installed in the middle of the upper end of the test frame assembly, and a round tube detachably connected to the lower end of the pressing connector. An elastic mechanism is installed inside the round tube, and a lifting plate is connected to the lower end of the elastic mechanism. A replaceable test component is detachably connected to the lower end of the lifting plate. A drive mechanism is installed inside the circular tube, and the drive mechanism is provided with multiple ball bearings. The upper end of the lifting disc is provided with multiple grooves at equal intervals, and the multiple ball bearings are respectively located in the multiple grooves. The circular tube is equipped with a positioning mechanism, which is connected to the lifting plate. The positioning mechanism is equipped with a fixing ring, which is connected to the driving mechanism.

[0007] Compared with existing technologies, the entire testing process of this invention is automatically controlled by the controller component, ensuring the accuracy of loading and the repeatability of testing; it realizes multi-dimensional and automated determination of the mechanical properties of rubber materials; and it can adjust the positional relationship between the round tube and the lifting plate as needed. Through this switching, the compressive strength and vibration impact resistance of the rubber vibration damper can be tested as needed, improving the convenience and accuracy of testing.

[0008] Preferably, the lifting mechanism includes two lifting hydraulic cylinder assemblies installed on both sides of the test frame assembly. The piston rods of the two lifting hydraulic cylinder assemblies are jointly fixed to a connecting frame assembly. Two positioning shafts are slidably installed on the connecting frame assembly, and the lower ends of the two positioning shafts are fixed to the upper end of the test frame assembly. The upper ends of the two positioning shafts are jointly fixed with a crossbeam; The load-bearing component is located between two positioning shafts.

[0009] Furthermore, the lifting and lowering of the piston rod of the lifting hydraulic cylinder assembly enables the connecting frame assembly to rise and fall relative to the test frame assembly, which in turn enables the connecting frame assembly to drive the pressing connecting piece to rise and fall the round tube piece. The positioning shaft ensures the stable rising and falling of the connecting frame assembly.

[0010] Preferably, the elastic mechanism includes a telescopic rod fixed inside the circular tube, and the piston rod of the telescopic rod passes through the fixing ring and is fixed to the upper end of the lifting plate. A return spring is fitted onto the telescopic rod, and the two ends of the return spring are respectively fixed inside the telescopic rod.

[0011] Furthermore, the telescopic rod consists of a tube and a rod. The rod is slidably installed inside the tube, while the two ends of the return spring are fixed to the tube and the rod respectively. The spring can drive the lifting plate to return to its original position when the lifting plate descends relative to the round tube, so that the lifting plate can move back and forth relative to the round tube, thereby driving the replaceable test component to perform lifting and vibration.

[0012] Preferably, the driving mechanism includes a drive motor assembly installed inside a circular tube, a turntable is rotatably sleeved inside the fixing ring, and the output shaft of the drive motor assembly is fixed in the middle of the turntable. Multiple ball bearings are equidistantly fitted onto the turntable. The multiple ball bearings and multiple grooved parts are all arranged in a circular shape.

[0013] Furthermore, multiple ball bearings and multiple grooved parts are arranged in a circular pattern; the circular arrangement allows multiple ball bearings and multiple grooved parts to alternate continuously, achieving vibration between the circular tube and the lifting plate. The vibration of the lifting plate enables the replaceable test component to follow the vibration.

[0014] Preferably, the positioning mechanism includes a pressing hydraulic cylinder assembly fixed inside a circular tube, and an adaptation mechanism is installed at the end of the piston rod of the pressing hydraulic cylinder assembly. The adaptation mechanism is provided with a pressing ring and a limiting sliding member. The lower end of the limiting sliding member is equipped with a connecting ring member, and multiple I-shaped parts are fixed at equal intervals on the connecting ring member. The I-shaped parts are slidably installed on the fixing ring member. Grooves are provided at both the upper and lower ends of the fixing ring member and the upper end of the lifting plate member. Multiple positioning holes are provided at equal intervals on the circumferential sidewall of the groove. The I-shaped part has an I-shaped groove, and a disc part is rotatably sleeved at the top and bottom of the I-shaped groove. A lead screw nut part is installed on the disc part, and a lead screw part is threadedly sleeved on the two lead screw nuts. The lead screw part is slidably installed on the I-shaped part, and the upper end of the I-shaped part is slidably installed on the connecting ring part. The lead screw part is located at the lower end of the lower pressure ring part. The disc component is equipped with a plug-in mechanism.

[0015] Furthermore, the downward hydraulic cylinder assembly can extend and retract according to control, controlling the distance and position between the downward ring and the connecting ring, thereby controlling whether the distance between the round tube and the lifting plate can be adjusted. When the distance between the round tube and the lifting plate is fixed, a downward pressure test can be performed. When the distance between the round tube and the lifting plate can be changed, a reciprocating vibration test can be performed to detect the bending resistance of the component under test.

[0016] Preferably, the insertion mechanism includes multiple through holes formed at the top and bottom of the I-shaped groove, with a plug rod slidably installed in the through holes. One end of the plug rod located in the I-shaped groove is fixed with a baffle, and one end of the baffle is rotatably connected to an inclined rod. Multiple inclined rods located on the same horizontal plane are rotatably connected to a disc on the same horizontal plane.

[0017] Furthermore, when the lead screw is raised or lowered, it drives the lead screw nut to rotate. The rotation of the lead screw nut causes the disc to rotate, which in turn causes the inclined rod to push the baffle. Under the action of the insert rod and the through hole, the insert rod can move smoothly so that after the I-shaped part is lowered into place, the through hole and the positioning hole are aligned. At the same time, the insert rod can be inserted into the positioning hole to complete the connection.

[0018] Preferably, the adaptation mechanism includes two sleeve components fixed between the lower pressure ring component and the limiting sliding component, and a sliding shaft is slidably installed between the two sleeve components. A resistance spring component is sleeved on the sliding shaft, and the upper and lower ends of the resistance spring component are respectively fixed inside the two sleeve components.

[0019] Furthermore, the downward hydraulic cylinder assembly can push the downward pressure ring to descend. The resistance spring component can first cause the connecting ring to descend, so that the connecting ring can drive the I-shaped component to descend. When the I-shaped component descends to its position, it can squeeze the resistance spring component to make the two sleeve components abut against each other. When the two sleeve components abut against each other, the downward pressure ring component can squeeze the lead screw component. The lifting and lowering of the lead screw component can control the insertion operation between the insertion rod component and the positioning hole.

[0020] Preferably, a limiting component is installed between the connecting frame assembly and the test frame assembly.

[0021] Furthermore, the limiting component enables precise calibration of the lifting and lowering of the connecting frame assembly, ensuring accurate compression; the limiting component can adopt existing limiting positioning technology.

[0022] Preferably, the edge of the groove is arc-shaped.

[0023] Furthermore, the curved edges facilitate the entry of the ball bearings into the turntable and their rapid removal from the turntable.

[0024] Preferably, a spring is sleeved on the lead screw, and the upper and lower ends of the spring are respectively fixed to the inner wall of the I-shaped groove and the lead screw.

[0025] Furthermore, when the lead screw is squeezed by the lower pressure ring, the spring can be stretched or compressed. When the external force disappears, the lead screw can be reset. That is, when the lead screw rises and falls, the lead screw nut can rotate under the action of the lead screw to provide power for the insertion and separation of the insertion rod and the corresponding positioning hole.

[0026] The beneficial effects of this invention are: 1. The control unit is equipped with control operation components that can be pre-programmed to facilitate the operation of the components within the test fixture assembly. Simultaneously, monitoring components are installed on the test fixture assembly to fully monitor deformation, fracture, and other conditions of the components installed between the load-bearing assembly and the replaceable test assembly. Corresponding components are also installed in the power unit assembly. Dynamic mechanical testing components are installed in the control unit, test fixture assembly, and power unit assembly, and the mechanical testing of the corresponding components is achieved by controlling the distance between the pressure connector and the load-bearing assembly. 2. The drive mechanism enables the ball bearings to rotate, allowing them to continuously enter and separate from the grooved parts. It also enables the lifting plate to vibrate relative to the round tube. Simultaneously, the positioning mechanism controls the distance between the round tube and the lifting plate. 3. The downward hydraulic cylinder assembly can extend and retract according to the control, controlling the distance and position between the downward ring and the connecting ring, thereby controlling whether the distance between the round tube and the lifting plate can be adjusted. When the distance between the round tube and the lifting plate is fixed, a downward pressure test can be performed. When the distance between the round tube and the lifting plate can be changed, a reciprocating vibration test can be performed to detect the bending resistance of the component under test. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a diagram showing the internal structure of the circular tube in this invention; Figure 3 This is a diagram showing the internal structure of the tooling component in this invention. Figure 4 This is a diagram showing the connection structure between the disc component and the inclined rod component in this invention; Figure 5 Appendix to this invention Figure 2 Enlarged view of point A; Figure 6 Appendix to this invention Figure 2 Enlarged view of point B.

[0028] In the diagram: 1. Controller assembly, 2. Test frame assembly, 3. Power unit assembly, 4. Lifting hydraulic cylinder assembly, 5. Connecting frame assembly, 6. Positioning shaft assembly, 7. Horizontal frame assembly, 8. Limiting assembly, 9. Pressing connecting assembly, 10. Bearing assembly, 11. Round tube assembly, 12. Drive motor assembly, 13. Fixing ring assembly, 14. Ball bearing assembly, 15. Groove assembly, 16. Turntable assembly, 17. Pressing ring assembly, 18. Telescopic rod assembly, 19. Return spring assembly, 20. Lifting plate assembly, 21. Replaceable test assembly, 22. I-shaped part, 23. Through hole, 24. Round disc assembly, 25. I-shaped groove, 26. Lead screw assembly, 27. Lead screw nut assembly, 28. Insert rod assembly, 29. Baffle assembly, 30. Diagonal rod assembly, 31. Groove, 32. Positioning hole, 33. Pressing hydraulic cylinder assembly, 34. Resistance spring assembly, 35. Sliding shaft, 36. Sleeve assembly, 37. Limiting sliding part, 38. Connecting ring assembly, 39. Spring assembly. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figures 1-6A dynamic mechanical testing machine for rubber vibration dampers includes a test frame assembly 2, a power unit assembly 3 connected to the rear end of the test frame assembly 2, a controller assembly 1 connected to one side of the test frame assembly 2, a lifting mechanism on the test frame assembly 2, a pressing connector 9 on the lifting mechanism, a load-bearing assembly 10 installed at the upper middle of the test frame assembly 2, and a circular tube 11 detachably connected to the lower end of the pressing connector 9. The controller assembly 1 contains control operation components that can be pre-programmed to facilitate the operation of components within the test frame assembly 2. Simultaneously, corresponding monitoring components are installed on the test frame assembly 2 to fully monitor deformation, fracture, and other conditions of components installed between the load-bearing assembly 10 and the replaceable test assembly 21. Corresponding components are also installed in the power unit assembly 3. The controller assembly 1, test frame assembly 2, and power unit assembly 3 all contain corresponding dynamic mechanical testing components, and the mechanical testing of the corresponding components is achieved by controlling the distance between the pressing connector 9 and the load-bearing assembly 10.

[0031] In this embodiment, an elastic mechanism is installed inside the round tube 11. The lower end of the elastic mechanism is connected to a lifting plate 20. The lower end of the lifting plate 20 is detachably connected to a replaceable test component 21. The elastic mechanism enables vibration between the round tube 11 and the lifting plate 20, so that the replaceable test component 21 can be driven to vibrate through the lifting plate 20. A drive mechanism is installed inside the circular tube 11. The drive mechanism is equipped with multiple ball bearings 14. Multiple grooves 15 are evenly spaced at the upper end of the lifting plate 20, and the ball bearings 14 are located in the grooves 15 respectively. A positioning mechanism is installed inside the circular tube 11 and is connected to the lifting plate 20. A fixing ring 13 is installed on the positioning mechanism and is connected to the drive mechanism. The drive mechanism enables the ball bearings 14 to rotate so that the ball bearings 14 continuously enter and separate from the grooves 15. The lifting plate 20 vibrates relative to the circular tube 11. At the same time, the operation of the positioning mechanism controls the distance between the circular tube 11 and the lifting plate 20.

[0032] In this embodiment, the lifting mechanism includes two lifting hydraulic cylinder assemblies 4 installed on both sides of the test frame assembly 2. The piston rods of the two lifting hydraulic cylinder assemblies 4 are jointly fixed to a connecting frame assembly 5. Two positioning shafts 6 are slidably installed on the connecting frame assembly 5, and the lower ends of the two positioning shafts 6 are fixed to the upper end of the test frame assembly 2. The lifting and lowering of the piston rods of the lifting hydraulic cylinder assemblies 4 can cause the connecting frame assembly 5 to rise and fall relative to the test frame assembly 2, which can cause the connecting frame assembly 5 to drive the downward pressing connecting piece 9 to raise and lower the round tube piece 11. The positioning shafts 6 can ensure the stable lifting and lowering of the connecting frame assembly 5. The upper ends of the two positioning shafts 6 are jointly fixed with a crossbeam 7; the bearing assembly 10 is located between the two positioning shafts 6; the crossbeam 7 can ensure the stability of the positioning shafts 6 so as to ensure that the connecting frame assembly 5 can be raised and lowered smoothly relative to the positioning shafts 6.

[0033] In this embodiment, the elastic mechanism includes a telescopic rod 18 fixed inside the circular tube 11. The piston rod of the telescopic rod 18 passes through the fixing ring 13 and is fixed to the upper end of the lifting plate 20. A return spring 19 is sleeved on the telescopic rod 18, and the two ends of the return spring 19 are respectively fixed to the two ends inside the telescopic rod 18. The telescopic rod 18 is composed of a tube and a rod. The rod is slidably installed inside the tube. At the same time, the two ends of the return spring 19 are respectively fixed to the tube and the rod. The spring can drive the lifting plate 20 to return to its original position when the lifting plate 20 descends relative to the circular tube 11, so as to realize the reciprocating movement of the lifting plate 20 relative to the circular tube 11, thereby driving the replaceable test assembly 21 to perform lifting and vibration.

[0034] In this embodiment, the driving mechanism includes a drive motor assembly 12 installed inside the circular tube 11, a turntable 16 rotatably sleeved inside the fixing ring 13, and the output shaft of the drive motor assembly 12 fixed in the middle of the turntable 16; multiple ball bearings 14 are rotatably sleeved on the turntable 16 at equal intervals; the multiple ball bearings 14 and multiple grooved parts 15 are all circularly arranged; the circular arrangement allows the multiple ball bearings 14 to continuously alternate with the multiple grooved parts 15, realizing the vibration between the circular tube 11 and the lifting plate 20, and the vibration of the lifting plate 20 enables the replaceable test component 21 to follow the vibration.

[0035] In this embodiment, the positioning mechanism includes a pressing hydraulic cylinder assembly 33 fixed inside the circular tube 11. An adaptation mechanism is installed at the end of the piston rod of the pressing hydraulic cylinder assembly 33. The adaptation mechanism is provided with a pressing ring 17 and a limiting sliding member 37. The pressing hydraulic cylinder assembly 33 can extend and retract according to control so as to control the distance between the pressing ring 17 and the connecting ring 38, thereby controlling whether the distance between the circular tube 11 and the lifting plate 20 can be adjusted. When the distance between the circular tube 11 and the lifting plate 20 is fixed, a pressing test can be performed. When the distance between the circular tube 11 and the lifting plate 20 can change, a reciprocating vibration test can be performed to detect the bending resistance of the component under test.

[0036] In this embodiment, a connecting ring 38 is installed at the lower end of the limiting sliding member 37. Multiple I-shaped members 22 are fixed at equal intervals on the connecting ring 38. The I-shaped members 22 are slidably installed on the fixing ring 13. Grooves 31 are provided at both the upper and lower ends of the fixing ring 13 and the upper end of the lifting plate 20. Multiple positioning holes 32 are provided at equal intervals on the circumferential sidewall of the groove 31. By controlling the lifting and lowering of the I-shaped members 22, the positional relationship between the I-shaped members 22 and the grooves 31 can be adjusted. When it is necessary to limit the distance between the round tube 11 and the lifting plate 20, the upper end of the I-shaped member 22 needs to be inserted into the groove 31 at the upper end of the fixing ring 13. And the fixing is achieved by controlling the positional relationship between the insert rod 28 and the positioning holes 32. When it is necessary to make the round tube 11 and the lifting plate 20 reciprocate, the lower end of the I-shaped part 22 is connected to the groove 31 at the lower end of the fixing ring 13.

[0037] In this embodiment, an I-shaped groove 25 is provided inside the I-shaped part 22, and the cross-sections of both the I-shaped groove 25 and the I-shaped part 22 are I-shaped. A disc part 24 is rotatably sleeved at the top and bottom of the I-shaped groove 25. A lead screw nut part 27 is installed on the disc part 24, and a lead screw part 26 is threadedly sleeved on the two lead screw nuts 27. The lead screw part 26 is slidably installed on the I-shaped part 22. By controlling the lifting and lowering of the lead screw part 26, the lead screw nut part 27 can drive the disc part 24 fixed thereto to rotate. The rotation of the disc part 24 can adjust the position of the insertion rod part 28, so that the insertion rod part 28 is inserted into the corresponding positioning hole 32. The upper end of the I-shaped part 22 is slidably installed on the connecting ring part 38, and the lead screw part 26 is located at the lower end of the lower pressure ring part 17. The disc part 24 is provided with an insertion mechanism. The insertion mechanism can fix the distance between the round tube part 11 and the lifting disc part 20.

[0038] In this embodiment, the insertion mechanism includes multiple through holes 23 formed at the top and bottom of the I-shaped groove 25. Insertion rods 28 are slidably installed within the through holes 23. A baffle 29 is fixed to one end of the insertion rod 28 within the I-shaped groove 25. A diagonal rod 30 is rotatably connected to one end of the baffle 29. Multiple diagonal rods 30 on the same horizontal plane are rotatably connected to a disc 24 on the same horizontal plane. When the lead screw 26 rises and falls, it drives the lead screw nut 27 to rotate. The rotation of the lead screw nut 27 causes the disc 24 to rotate, which in turn causes the diagonal rod 30 to push the baffle 29. Under the action of the insertion rod 28 and the through holes 23, the insertion rod 28 moves smoothly so that after the I-shaped part 22 descends to its position, the through holes 23 and the positioning holes 32 are aligned, allowing the insertion rod 28 to be inserted into the positioning holes 32, thus completing the connection.

[0039] In this embodiment, the adaptation mechanism includes two sleeves 36 fixed between the pressing ring 17 and the limiting sliding member 37. A sliding shaft 35 is slidably installed between the two sleeves 36. A resistance spring 34 is sleeved on the sliding shaft 35. The upper and lower ends of the resistance spring 34 are respectively fixed inside the two sleeves 36. The pressing hydraulic cylinder assembly 33 can push the pressing ring 17 down. The resistance spring 34 can first cause the connecting ring 38 to down, so that the connecting ring 38 can drive the I-shaped member 22 to down. When the I-shaped member 22 is down in place, the two sleeves 36 can be pressed against each other by squeezing the resistance spring 34. When the two sleeves 36 are in contact, the pressing ring 17 can squeeze the lead screw 26. The lifting and lowering of the lead screw 26 can control the insertion operation between the insertion rod 28 and the positioning hole 32.

[0040] In this embodiment, a limiting component 8 is installed between the connecting frame assembly 5 and the test frame assembly 2; the limiting component 8 enables precise calibration of the lifting and lowering of the connecting frame assembly 5, ensuring accurate compression.

[0041] In this embodiment, the edge of the groove 15 is arc-shaped; the arc-shaped edge facilitates the entry of the ball bearing 14 into the turntable 16 and its rapid exit from the turntable 16, enabling rapid changes in the distance between the lifting disc 20 and the round tube 11, and allowing the vibration frequency to be adjusted by controlling the rotation speed of the drive motor assembly 12.

[0042] In this embodiment, a spring 39 is sleeved on the lead screw 26. The upper and lower ends of the spring 39 are fixed to the inner wall of the I-shaped groove 25 and the lead screw 26, respectively. The spring 39 is sleeved on the lead screw 26, and the upper and lower ends of the spring 39 can be fixed to the side wall of the I-shaped groove 25 and the lead screw 26, respectively. When the lead screw 26 is squeezed by the lower pressure ring 17, the spring 39 can be stretched or squeezed. When the external force disappears, the lead screw 26 can be driven to reset. That is, when the lead screw 26 rises and falls, the lead screw nut 27 can rotate under the action of the lead screw 26, so as to provide power for the insertion and separation of the insertion rod 28 and the corresponding positioning hole 32.

[0043] In this invention, when testing is required, the staff can install a suitable load-bearing component 10 and a replaceable test component 21 as needed. For example, when testing tensile strength, a load-bearing component 10 with clamping ability and a replaceable test component 21 can be used to clamp both ends of the part to be tested. By extending the lifting hydraulic cylinder component 4, the connecting frame component 5 can be raised to perform tensile testing. When testing the resistance to downward pressure, the load-bearing component 10 can be a component that can be fixed at both ends, so that the lifting hydraulic cylinder component 4 drives the connecting frame component 5 and the downward pressure connecting piece 9 to descend, which allows the replaceable test component 21 to descend and apply pressure to the rubber vibration damper. At the same time, the control tool 22 and the lifting plate 20 are separated, and the turntable 16 can be driven to rotate by the drive motor assembly 12, so that the ball part 14 intermittently abuts against the groove part 15, and the lifting plate 20 can drive the replaceable test component 21 to continuously vibrate the component to test the bending ability.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dynamic mechanical testing machine for rubber vibration dampers, comprising a test frame assembly (2), characterized in that: The test frame assembly (2) is connected to a power unit assembly (3) at its rear end. A controller assembly (1) is connected to one side of the test frame assembly (2). The test frame assembly (2) is provided with a lifting mechanism. The lifting mechanism is provided with a pressing connector (9). A bearing assembly (10) is installed in the middle of the upper end of the test frame assembly (2). A round tube (11) is detachably connected to the lower end of the pressing connector (9). An elastic mechanism is installed inside the round tube (11), and the lower end of the elastic mechanism is connected to a lifting plate (20). The lower end of the lifting plate (20) is detachably connected to a replaceable test component (21). The circular tube (11) is equipped with a drive mechanism, and the drive mechanism is provided with multiple ball bearings (14). The upper end of the lifting plate (20) is provided with multiple grooves (15) at equal intervals, and the multiple ball bearings (14) are respectively located in the multiple grooves (15). The circular tube (11) is provided with a positioning mechanism, which is connected to the lifting plate (20). The positioning mechanism is provided with a fixing ring (13), which is connected to the driving mechanism. The positioning mechanism includes a pressing hydraulic cylinder assembly (33) fixed inside a circular tube (11). The piston rod end of the pressing hydraulic cylinder assembly (33) is equipped with an adaptation mechanism, which is provided with a pressing ring (17) and a limiting sliding member (37). The lower end of the limiting sliding member (37) is equipped with a connecting ring member (38). Multiple I-shaped members (22) are fixed at equal intervals on the connecting ring member (38). The I-shaped members (22) are slidably installed on the fixing ring member (13). Grooves (31) are provided at both the upper and lower ends of the fixing ring member (13) and the upper end of the lifting plate member (20). Multiple positioning holes (32) are provided at equal intervals on the circumferential sidewall of the groove (31). The I-shaped part (22) has an I-shaped groove (25) inside. The top and bottom of the I-shaped groove (25) are rotatably sleeved with a disc part (24). A lead screw nut part (27) is installed on the disc part (24). A lead screw part (26) is threadedly sleeved on the two lead screw nuts (27). The lead screw part (26) is slidably installed on the I-shaped part (22). The upper end of the I-shaped part (22) is slidably installed on the connecting ring part (38). The lead screw part (26) is located at the lower end of the lower pressure ring part (17). The disc component (24) is provided with a plug-in mechanism; The insertion mechanism includes multiple through holes (23) at the top and bottom of the I-shaped groove (25). Insert rods (28) are slidably installed in the through holes (23). A baffle (29) is fixed at one end of the insert rod (28) in the I-shaped groove (25). An inclined rod (30) is rotatably connected to one end of the baffle (29). Multiple inclined rods (30) on the same horizontal plane and a disc (24) on the same horizontal plane are rotatably connected. The lifting mechanism includes two lifting hydraulic cylinder assemblies (4) installed on both sides of the test frame assembly (2). The piston rods of the two lifting hydraulic cylinder assemblies (4) are jointly fixed to a connecting frame assembly (5). Two positioning shafts (6) are slidably installed on the connecting frame assembly (5). The lower ends of the two positioning shafts (6) are fixed to the upper end of the test frame assembly (2). The upper ends of the two positioning shafts (6) are jointly fixed with a crossbeam (7); The load-bearing component (10) is located between two positioning shafts (6); The drive mechanism includes a drive motor assembly (12) installed inside a round tube (11), a turntable (16) is rotatably sleeved inside the fixing ring (13), and the output shaft of the drive motor assembly (12) is fixed in the middle of the turntable (16). Multiple ball bearings (14) are equidistantly mounted on the turntable (16); Multiple ball bearings (14) and multiple grooved parts (15) are arranged in a circular shape; The adaptation mechanism includes two sleeves (36) fixed between the lower pressure ring (17) and the limiting sliding member (37). A sliding shaft (35) is slidably installed between the two sleeves (36). A resistance spring (34) is sleeved on the sliding shaft (35). The upper and lower ends of the resistance spring (34) are respectively fixed inside the two sleeves (36).

2. The dynamic mechanical testing machine for rubber vibration dampers according to claim 1, characterized in that, The elastic mechanism includes a telescopic rod (18) fixed inside the round tube (11), and the piston rod of the telescopic rod (18) passes through the fixed ring (13) and is fixed to the upper end of the lifting plate (20); A reset spring (19) is sleeved on the telescopic rod (18), and the two ends of the reset spring (19) are respectively fixed inside the telescopic rod (18).

3. The dynamic mechanical testing machine for rubber vibration dampers according to claim 1, characterized in that, A limiting component (8) is installed between the connecting frame assembly (5) and the test frame assembly (2).

4. The dynamic mechanical testing machine for rubber vibration dampers according to claim 1, characterized in that, The edge of the groove (15) is arc-shaped.

5. The dynamic mechanical testing machine for rubber vibration dampers according to claim 1, characterized in that, A spring (39) is sleeved on the lead screw (26), and the upper and lower ends of the spring (39) are respectively fixed to the inner wall of the I-shaped groove (25) and the lead screw (26).

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