An assembly and detection integrated device for rubber bushings

Abstract

This invention discloses an integrated assembly and testing device for rubber bushings, relating to the field of rubber bushing technology. It aims to solve the technical problem of the relatively independent assembly and testing stages in the current rubber bushing production process, including the assembly component. This invention, through an integrated design of assembly, conveying, and testing, automates the assembly of rubber bushings, while the stiffness testing component enables simultaneous and accurate testing of multiple holes, adapting to the testing needs of workpieces of different heights. The stiffness characteristics of the rubber bushing are fed back through a sensing structure, and multi-station synchronous testing ensures uniform stress and synchronized operation of each testing structure, achieving full automation of the assembly, conveying, and testing process. This invention, through its integrated design of assembly, conveying, and testing, combines assembly and testing functions into one unit. Multi-station synchronous testing ensures testing accuracy and improves batch processing capacity, perfectly meeting the industrial assembly and testing needs of large rubber bushings in the automotive parts and mechanical equipment industries.

Description

Technical Field

[0001] This invention relates to the field of rubber bushing technology, and more specifically, to an integrated assembly and testing device for rubber bushings. Background Technology

[0002] Large rubber bushings are key vibration damping components in heavy machinery, automotive chassis, and bridge engineering, with applications spanning the automotive, construction machinery, bridge engineering, and shipbuilding industries. To achieve high load-bearing capacity while maintaining a relatively light weight, large rubber bushings are often designed with internal hollowing out. During assembly, their large size and high load-bearing capacity must be considered, while the testing phase requires servo loading tests to verify stiffness and load-bearing capacity.

[0003] However, in the existing production process of large rubber bushings, the assembly and testing stages are independent and not integrated. Furthermore, the testing stage is mostly single-station, resulting in low efficiency and poor accuracy due to uneven stress distribution, making it difficult to meet the assembly and testing requirements for the industrial-scale mass production of large rubber bushings. Therefore, we propose an integrated assembly and testing device for rubber bushings. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide an integrated assembly and testing device for rubber bushings, so as to solve the technical problem that the assembly and testing links of rubber bushings are relatively independent in the current production process.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an integrated assembly and testing device for rubber bushings, comprising an assembly component, a conveying component, and a stiffness testing component;

[0006] The assembly component is located on one side of the conveying component, and the stiffness detection component is located on the other side of the conveying component;

[0007] The assembly assembly is used to install the rubber bushing to be inspected onto the workpiece;

[0008] The conveying assembly is used to mount the workpiece and drive the workpiece to rotate and move.

[0009] The stiffness testing component includes a deformable testing structure, and a plurality of the deformable testing structures correspond one-to-one with a plurality of holes in the rubber bushing to be tested. The deformable testing structure is used to extend into the holes in the rubber bushing to be tested to perform stiffness testing on the rubber bushing installed on the workpiece.

[0010] Preferably, the assembly assembly includes a lateral drive unit, a first longitudinal drive unit, and a clamping assembly structure;

[0011] The lateral drive unit is mounted on the platform, the first longitudinal drive unit is mounted on the output end of the lateral drive unit, and the clamping assembly structure is located at the output end of the first longitudinal drive unit.

[0012] Preferably, the clamping assembly structure includes a fixed clamping frame, a movable clamping frame, a first linear drive unit, a clamping end, and a protrusion;

[0013] The fixed clamping frame is installed at the output end of the first longitudinal drive unit, and the movable clamping frame is slidably connected to the fixed clamping frame. The first linear drive unit is installed on the fixed clamping frame, and the output end of the first linear drive unit is connected to the movable clamping frame. The two clamping ends are respectively installed on the fixed clamping frame and the movable clamping frame. The two clamping ends form a clamping component adapted to the rubber bushing to be tested, and the protrusion is located in the middle of the clamping component.

[0014] Preferably, the stiffness detection component further includes a second longitudinal drive unit and a ring-shaped drive structure;

[0015] The second longitudinal drive unit is mounted on another platform, the annular drive structure is located at the output end of the second longitudinal drive unit, and several deformable test structures are respectively located at several output ends of the annular drive structure, with the several output ends arranged in an equidistant ring.

[0016] Preferably, the annular drive structure includes a ring frame, a first rotary drive unit, a drive gear, and a drive rack;

[0017] The ring frame is installed at the output end of the second longitudinal drive unit. Several first rotary drive units are installed equidistantly in a ring on the ring frame. Several drive gears are respectively installed at the output ends of several first rotary drive units. Several drive racks are respectively meshed with several drive gears, and several drive racks are all slidably connected to the ring frame. Several deformable test structures are respectively located at the ends of several drive racks.

[0018] Preferably, the deformable test structure includes a deformation driving component and a deformable end component;

[0019] The deformation driving component has an extended form and a retracted form. When the deformation driving component is in the extended form, the deformable test structure extends and adapts to the inner wall of the hole of the rubber bushing to be tested, and the deformable end component is attached to the inner wall of the hole. When the deformation driving component is in the retracted form, the deformable test structure retracts and adapts to the narrow inlet of the hole.

[0020] Preferably, the deformation driving component includes a fixed frame, a movable frame, a second linear drive unit, a transmission link, and a mounting base;

[0021] The fixed frame is installed at the end of the drive rack, the movable frame is slidably connected to the fixed frame, the second linear drive unit is installed at the end of the drive rack, and the output end of the second linear drive unit is connected to the movable frame. One end of each of the four sets of transmission links is movably connected to the top and bottom ends of the fixed frame and the movable frame, respectively, and the two transmission links of each set are mirror images of each other. The four mounting seats are movably connected to the other end of each of the four sets of transmission links.

[0022] Preferably, the deformation driving component further includes a transmission gear, a follower gear, and a mounting rod;

[0023] The four transmission gears are respectively mounted on the other end of the four transmission links, and the four transmission gears are movably connected to the four mounting seats. The four follower gears are movably connected to the four mounting seats. The four mounting rods are respectively mounted on the four follower gears. The two deformable end components are respectively located at one end of the four mounting rods. When the deformation driving component is in the unfolded state, the mounting rods drive the two deformable end components to tilt and adapt to the fan-shaped structure. When the deformation driving component is in the retracted state, the mounting rods drive the two deformable end components to return to the upright position and adapt to the rectangular structure.

[0024] Preferably, the deformable end component includes a support frame, an ejector portion, and a first pressure sensor. The two support frames are respectively installed at one end of the four mounting rods, and the two ejector portions are respectively located in the middle of the two support frames. The ejector portion has an arc-shaped protrusion structure, and the two first pressure sensors are respectively installed on the two ejector portions.

[0025] Preferably, the deformable test structure further includes a puncture deformation component;

[0026] The puncture deformation component includes a deformation sleeve, a second rotary drive unit, a rotary gear, a push rod, a lifting frame, a lifting part, a puncture part, and a second pressure sensor;

[0027] Several deformable sleeves are respectively disposed on both sides of two supporting frames. Two second rotary drive units are respectively mounted on the two supporting frames. Two rotary gears are respectively mounted on the output ends of the two second rotary drive units, and the two rotary gears are respectively located inside the two supporting frames. Four push rods are respectively meshed and connected to both sides of the two rotary gears, and the two push rods on both sides of each rotary gear are arranged in opposite directions. Four lifting frames are respectively mounted on one end of the four push rods. Several lifting parts are slidably connected to the two supporting frames. Several piercing parts are slidably connected to several lifting parts, and the several piercing parts correspond one-to-one with several deformable sleeves. The piercing parts are conical structures. Several second pressure sensors are respectively disposed between several lifting parts and several piercing parts.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention integrates assembly, conveying, and testing. The assembly component automates the assembly of rubber bushings, while the central protrusion ensures centering and clamping of the bushing, preventing displacement or deformation during clamping. The bushing is then smoothly pressed into the preset position on the workpiece, completing the automated assembly. The stiffness testing component enables simultaneous and accurate testing of multiple holes, adapting to the testing needs of workpieces of varying heights. The stiffness characteristics of the rubber bushing are fed back through a sensing structure, and multi-station synchronous testing ensures uniform stress and synchronized action across all testing structures, achieving full automation of the assembly, conveying, and testing process. This invention, through its integrated design of assembly, conveying, and testing, combines assembly and testing functions into one. Multi-station synchronous testing ensures testing accuracy and improves batch processing capacity, perfectly meeting the industrial assembly and testing needs of large rubber bushings in the automotive parts and machinery equipment industries.

[0030] 2. This invention utilizes a deformable testing structure with a deformation-driven component as the driving unit to intelligently switch between contraction and expansion modes. When the deformation-driven component switches to the contraction mode, its overall radial dimension decreases, adapting to narrow inlets and enabling unobstructed insertion. When the deformation-driven component switches to the expansion mode, its radial dimension expands to fully conform to the inner wall of the hole, providing a stable contact base for stiffness testing. The contraction and expansion actions of the deformation-driven component form a complete closed-loop testing process encompassing insertion, expansion, and testing. This invention, through its deformable testing structure and the dual-mode switching of the deformation-driven component, solves the problems of difficult insertion through narrow inlets and poor inner wall conformation, achieving adaptability to multiple hole diameters and meeting the industrial testing needs of multi-specification rubber bushings in the automotive and mechanical equipment fields.

[0031] 3. This invention utilizes an optimized design of a deformable driving component with an adaptable end-head shape. This design allows for angle adjustment of the end-head component. When the deformable driving component switches to a retracted state, the deformable end-head component closes to form a rectangular structure, significantly reducing the overall radial dimension and accommodating the narrow inlet of the rubber bushing hole. When the deformable driving component switches to an unfolded state, the deformable end-head component unfolds to form a fan-shaped structure, with the surface of the end-head component completely conforming to the inner wall of the rubber bushing hole, maximizing the contact area and ensuring uniform pressure transmission and accurate data acquisition during stiffness testing. This invention solves the angle adjustment problem of the end-head component through the optimized design of the deformable driving component with an adaptable end-head shape. The fan-shaped unfolded form achieves conformity to the inner wall of the fan-shaped hole, and the rectangular retracted form facilitates smooth entry into the narrow inlet, improving the versatility of the equipment.

[0032] 4. This invention employs a dual-layer detection design combining fit detection and puncture testing. The deformable end component enables full-area fit detection of the inner wall of the hole, while the central ejector section utilizes an arc-shaped protrusion structure to assess the overall stiffness of the bushing. The puncture deformation component enables in-depth detection of the local deformation characteristics of the bushing. The puncture part, with its conical structure, can penetrate localized areas of the rubber bushing, achieving full-coverage puncture testing of different locations on the inner wall of the hole. This captures local stiffness differences in the bushing and allows for real-time acquisition of the bushing's local elastic modulus and puncture resistance microscopic characteristics. This dual-layer detection design, combining fit detection and puncture testing, with the combination of the arc-shaped ejector and the conical puncture part, addresses both surface and point contact detection requirements. Multi-sensor data acquisition significantly improves the accuracy and comprehensiveness of the detection. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the assembly component of the present invention.

[0035] Figure 3 This is a partial structural schematic diagram of the stiffness detection component of the present invention.

[0036] Figure 4 This is a schematic diagram of the annular driving structure of the present invention.

[0037] Figure 5 This is a schematic diagram of the drive gear in the annular drive structure of the present invention.

[0038] Figure 6 This is a schematic diagram of the deformable test structure of the present invention when unfolded.

[0039] Figure 7 For the present invention Figure 6 A magnified structural diagram of point A in the middle.

[0040] Figure 8 This is a schematic diagram of the deformable test structure of the present invention during shrinkage.

[0041] Figure 9 This is a structural schematic diagram of the deformable end component of the present invention.

[0042] Figure 10 This is a schematic diagram of the structure of the rubber bushing to be assembled and tested according to the present invention.

[0043] Explanation of the labels in the diagram:

[0044] 1. Assembly components; 2. Conveying components; 3. Stiffness testing components; 4. Deformable testing structures;

[0045] 101. Lateral drive unit; 102. First longitudinal drive unit; 103. Clamping assembly structure;

[0046] 1031. Fixed clamping frame; 1032. Movable clamping frame; 1033. First linear drive unit; 1034. Clamping end; 1035. Protrusion;

[0047] 301. Second longitudinal drive unit; 302. Ring-shaped drive structure;

[0048] 3021, Ring frame; 3022, First rotary drive unit; 3023, Drive gear; 3024, Drive rack;

[0049] 401. Deformation driving component; 402. Deformable end component; 403. Puncture deformation component;

[0050] 4011 Fixed frame; 4012 Movable frame; 4013 Second linear drive unit; 4014 Transmission link; 4015 Mounting base; 4016 Transmission gear; 4017 Follower gear; 4018 Mounting rod;

[0051] 4021. Frame opening; 4022. Ejector section; 4023. First pressure sensor;

[0052] 4031, Deformable sleeve; 4032, Second rotary drive unit; 4033, Rotary gear; 4034, Push rack; 4035, Lifting frame; 4036, Lifting part; 4037, Puncture part; 4038, Second pressure sensor. Detailed Implementation

[0053] Example 1, as Figures 1 to 5 As shown, the present invention relates to an integrated assembly and testing device for rubber bushings, comprising an assembly component 1, a conveying component 2, and a stiffness testing component 3; the assembly component 1 is located on one side of the conveying component 2, and the stiffness testing component 3 is located on the other side of the conveying component 2; the assembly component 1 is used to install the rubber bushing to be tested onto the workpiece; the conveying component 2 is used to install the workpiece and drive the workpiece to rotate and move; the stiffness testing component 3 includes deformable testing structures 4, six deformable testing structures 4 corresponding one-to-one with six holes of the rubber bushing to be tested, and the deformable testing structures 4 are used to extend into the holes of the rubber bushing to be tested to perform stiffness testing on the rubber bushing to be tested installed on the workpiece.

[0054] Assembly component 1 includes a lateral drive unit 101, a first longitudinal drive unit 102, and a clamping assembly structure 103; the lateral drive unit 101 is mounted on the platform, the first longitudinal drive unit 102 is mounted on the output end of the lateral drive unit 101, and the clamping assembly structure 103 is located at the output end of the first longitudinal drive unit 102.

[0055] The clamping assembly structure 103 includes a fixed clamping frame 1031, a movable clamping frame 1032, a first linear drive unit 1033, clamping ends 1034, and a protrusion 1035. The fixed clamping frame 1031 is installed on the output end of the first longitudinal drive unit 102, the movable clamping frame 1032 is slidably connected to the fixed clamping frame 1031, the first linear drive unit 1033 is installed on the fixed clamping frame 1031, and the output end of the first linear drive unit 1033 is connected to the movable clamping frame 1032. The two clamping ends 1034 are respectively installed on the fixed clamping frame 1031 and the movable clamping frame 1032, and the two clamping ends 1034 form a clamping component adapted to the rubber bushing to be tested, and the protrusion 1035 is located in the middle of the clamping component.

[0056] The stiffness testing component 3 also includes a second longitudinal drive unit 301 and an annular drive structure 302; the second longitudinal drive unit 301 is mounted on another platform, the annular drive structure 302 is located at the output end of the second longitudinal drive unit 301, and six deformable test structures 4 are located at the six output ends of the annular drive structure 302, with the six output ends arranged in an equidistant ring.

[0057] The annular drive structure 302 includes a ring frame 3021, a first rotary drive unit 3022, a drive gear 3023, and a drive rack 3024. The ring frame 3021 is installed at the output end of the second longitudinal drive unit 301. Six first rotary drive units 3022 are equidistantly and annularly installed on the ring frame 3021. Six drive gears 3023 are respectively installed at the output ends of the six first rotary drive units 3022. Six drive racks 3024 are respectively meshed with the six drive gears 3023, and all six drive racks 3024 are slidably connected to the ring frame 3021. Six deformable test structures 4 are respectively located at the ends of the six drive racks 3024.

[0058] This invention integrates assembly, conveying, and testing into a single design. By combining precise clamping assembly, ring synchronous drive, and the synergistic operation of deformable testing structure 4, it constructs a complete equipment system for "automated assembly of rubber bushings + multi-station synchronous stiffness testing." This solves the pain points of traditional rubber bushing assembly, such as reliance on manual labor, low testing efficiency, disconnect between assembly and testing, and difficulty in synchronous testing of multiple pores. It significantly improves the automation level, testing accuracy, and production efficiency of rubber bushing assembly and testing.

[0059] Assembly component 1 achieves automated assembly of rubber bushings through "multi-dimensional drive + precise clamping": the transverse drive unit 101 and the first longitudinal drive unit 102 form a two-dimensional moving platform, driving the clamping assembly structure 103 to flexibly adjust its position to adapt to the assembly requirements of different workstations; the fixed clamping frame 1031 and the movable clamping frame 1032 of the clamping assembly structure 103 cooperate, and the first linear drive unit 1033 drives the movable clamping frame 1032 to slide, so that the two clamping ends 1034 form a clamping space that precisely matches the contour of the rubber bushing, and the protrusion 1035 in the middle is embedded in the center hole of the rubber bushing to achieve centering clamping of the bushing and avoid bushing displacement or deformation during clamping. When the conveying component 2 delivers the workpiece to the assembly station, the clamping assembly structure 103 precisely grasps the rubber bushing, and after adjusting its position through two-dimensional drive, it smoothly presses the bushing into the preset position of the workpiece, completing the automated assembly and completely replacing the inefficiency and error of manual assembly.

[0060] The conveying component 2 serves as a connecting hub to achieve precise transfer of workpieces: the component carries the workpiece and drives it to rotate and move, smoothly transporting the assembled workpiece from the assembly station to the stiffness testing station, ensuring seamless connection between the assembly and testing processes; during the conveying process, the workpiece is precisely positioned to avoid positional deviations affecting the accuracy of subsequent testing, providing stable workpiece support for simultaneous testing of multiple holes.

[0061] The stiffness testing component 3 achieves simultaneous and accurate testing of multiple holes using a "ring drive + deformable testing" approach: the second longitudinal drive unit 301 drives the ring drive structure 302 to rise and fall as a whole, adapting to the testing needs of workpieces of different heights; six first rotary drive units 3022 are evenly arranged on the ring frame 3021 of the ring drive structure 302. Through the meshing transmission of drive gears 3023 and drive racks 3024, the six drive racks 3024 are driven to extend / retract synchronously, thereby pushing the six deformable test structures 4 to precisely insert into the six holes of the rubber bushing. The deformable test structures 4 correspond one-to-one with the holes, and the stiffness characteristics of the rubber bushing are fed back through the sensing structure. The six stations are tested synchronously, greatly improving the testing efficiency; the equidistant ring layout of the ring drive structure 302 ensures that each test structure is subjected to uniform force and moves synchronously, avoiding result deviations caused by asynchronous testing.

[0062] The components form a deeply collaborative closed loop: after assembly component 1 completes the bushing assembly, conveying component 2 transfers the workpiece to the inspection station and positions it precisely; the second longitudinal drive unit 301 drives the annular drive structure 302 downward, and the six drive racks 3024 extend synchronously, while the deformable test structure 4 extends into the bushing hole for stiffness testing; after the test is completed, the drive racks 3024 retract, and conveying component 2 transfers the workpiece out of the inspection station, realizing full automation of the "assembly-conveyance-inspection" process. Meanwhile, the adaptability design of the clamping end 1034 and the customized development of the deformable test structure 4 enable the equipment to be compatible with the assembly and inspection of rubber bushings of different specifications, breaking the limitation of traditional equipment's "single specification adaptation".

[0063] This invention integrates assembly, conveying, and testing functions into one integrated design. Multi-station synchronous testing not only ensures testing accuracy but also improves batch processing capacity, perfectly meeting the industrial assembly and testing needs of large rubber bushings in the automotive parts and mechanical equipment fields.

[0064] Specifically, such as Figures 6 to 8 As shown, the deformable test structure 4 of the present invention includes a deformation driving component 401 and a deformable end component 402; the deformation driving component 401 has an unfolded state and a contracted state. When the deformation driving component 401 is in the unfolded state, the deformable test structure 4 unfolds and adapts to the inner wall of the hole of the rubber bushing to be tested, and the deformable end component 402 is attached to the inner wall of the hole; when the deformation driving component 401 is in the contracted state, the deformable test structure 4 contracts and adapts to the narrow inlet of the hole.

[0065] The deformation drive component 401 includes a fixed frame 4011, a movable frame 4012, a second linear drive unit 4013, transmission links 4014, and mounting bases 4015. The fixed frame 4011 is installed at the end of the drive rack 3024, the movable frame 4012 is slidably connected to the fixed frame 4011, the second linear drive unit 4013 is installed at the end of the drive rack 3024, and the output end of the second linear drive unit 4013 is connected to the movable frame 4012. One end of each of the four sets of transmission links 4014 is movably connected to the top and bottom ends of the fixed frame 4011 and the movable frame 4012, and the two transmission links 4014 in each set are mirror images of each other. The four mounting bases 4015 are movably connected to the other ends of the four sets of transmission links 4014.

[0066] This invention upgrades the rubber bushing stiffness detection system through the design of a deformable test structure 4, and constructs an integrated test process of "shrinkage introduction - unfolding and bonding - deformation detection". It solves the pain points of the test structure being unable to adapt to narrow inlets, poor bonding with the inner wall, low detection accuracy, and limited compatibility with a single specification, and greatly improves the accuracy and versatility of synchronous stiffness detection of multi-hole rubber bushings.

[0067] The deformable test structure 4 uses the deformation driving component 401 as the core driving unit to realize intelligent switching of "contraction-expansion" form: the fixed frame 4011 of the deformation driving component 401 is installed at the end of the driving rack 3024, the movable frame 4012 is slidably connected to the fixed frame 4011, and the second linear driving unit 4013 provides power for the sliding of the movable frame 4012; four sets of transmission links 4014 are respectively hinged to the top and bottom of the fixed frame 4011 and the movable frame 4012, with two of each set arranged in a mirror image, and are linked with four mounting seats 4015 to form a symmetrical linkage transmission mechanism. When the test structure needs to be inserted into the rubber bushing hole, the second linear drive unit 4013 pulls the movable frame 4012 away from the fixed frame 4011. Through the folding of the transmission link 4014, the mounting base 4015 is driven to retract inward, so that the deformation drive component 401 switches to the contracted form—the overall radial dimension is reduced, which precisely fits the narrow inlet of the hole, realizing unobstructed insertion and avoiding scratching the inner wall of the hole or getting stuck when the traditional rigid structure is inserted. After being inserted into place, the second linear drive unit 4013 pushes the movable frame 4012 closer to the fixed frame 4011, the transmission link 4014 unfolds and drives the mounting base 4015 to push outward, and the deformation drive component 401 switches to the unfolded form, with the radial dimension expanding to completely fit the inner wall of the hole, providing a stable contact base for stiffness testing.

[0068] The deformable end component 402 is fixedly connected to the mounting base 4015 of the deformation drive component 401. In its unfolded state, it fits tightly against the inner wall of the hole, becoming the core sensing unit for stiffness detection. The end component is made of elastic sensing material, which can not only adapt to different hole diameters by synchronously extending and retracting with the mounting base 4015, but also provide feedback on the stiffness characteristics of the rubber bushing through its own deformation after contacting the inner wall. The six deformable test structures 4 correspond one-to-one with the six holes of the rubber bushing. Under the synchronous control of the annular drive structure 302, multiple holes can be unfolded and detected simultaneously, ensuring that the detection conditions of each hole are consistent and avoiding the result deviation caused by batch detection.

[0069] This structure works in close coordination with other components of the stiffness testing assembly 3: the drive rack 3024 of the annular drive structure 302 drives the overall extension and retraction of the deformable test structure 4, enabling the switching of testing positions; the second longitudinal drive unit 301 adjusts the height of the test structure to fit rubber bushings at different installation positions; the first rotary drive unit 3022 ensures the synchronous advance and retreat of the six test structures through gear-rack transmission, guaranteeing the synchronicity of multi-hole testing. The "contraction-expansion" action of the deformation drive component 401, in precise coordination with the extension and retraction of the drive rack 3024 and the lifting and lowering of the second longitudinal drive unit 301, forms a complete closed-loop testing process of "positioning-introduction-expansion-testing-contraction-exit".

[0070] This invention solves the problems of difficult narrow inlet insertion and poor inner wall fit by designing a deformable test structure 4 and dual-mode switching of the deformation drive component 401, thereby achieving the ability to adapt to multiple aperture specifications and meeting the industrial testing needs of multiple specifications of rubber bushings in the automotive and mechanical equipment fields.

[0071] It is worth noting that, such as Figures 7 to 10 As shown, the deformable driving component 401 of the present invention further includes transmission gears 4016, follower gears 4017, and mounting rods 4018; the four transmission gears 4016 are respectively mounted on the other end of the four transmission connecting rods 4014, and the four transmission gears 4016 are respectively movably connected to the four mounting seats 4015, the four follower gears 4017 are respectively movably connected to the four mounting seats 4015, the four mounting rods 4018 are respectively mounted on the four follower gears 4017, and the two deformable end components 402 are respectively located at one end of the four mounting rods 4018; when the deformable driving component 401 is in the unfolded state, the mounting rods 4018 drive the two deformable end components 402 to tilt and adapt to the fan-shaped structure; when the deformable driving component 401 is in the retracted state, the mounting rods 4018 drive the two deformable end components 402 to return to the upright position and adapt to the rectangular structure.

[0072] This invention optimizes the design of the deformation drive component 401 with end shape adaptation, upgrades the shape switching and fitting capability of the deformable test structure 4, and constructs an integrated testing system of "precise shrinkage introduction - fan-shaped expansion fitting - intelligent stiffness detection". It solves the pain points of mismatched end fitting of the test structure, small contact area of ​​the inner wall of the hole, distorted test data, and single adaptability, and greatly improves the accuracy and versatility of rubber bushing hole stiffness detection.

[0073] The deformable drive component 401 incorporates a gear-link linkage mechanism on the basis of the original linkage transmission to achieve intelligent control of the angle and shape of the end component: four transmission gears 4016 are respectively hinged to the ends of four sets of transmission linkages 4014 and are movably connected to the mounting base 4015. The follower gear 4017 meshes with the transmission gear 4016. The mounting rod 4018 is fixed on the follower gear 4017. Two deformable end components 402 are respectively assembled on the ends of the four sets of mounting rods 4018. When the deformation drive component 401 switches to the retracted form, the second linear drive unit 4013 pulls the movable frame 4012 closer to the fixed frame 4011. The transmission link 4014 folds and drives the transmission gear 4016 to rotate. Through the meshing relationship, it drives the follower gear 4017 to rotate synchronously, so that the mounting rod 4018 returns to the vertical position. The deformable end component 402 then closes to form a rectangular structure. The overall radial dimension is greatly reduced, which can accurately fit the narrow inlet of the rubber bushing hole, so as to achieve smooth introduction without obstruction or scratches, and solve the problem of jamming or damage to the inner wall of the hole when introducing traditional structures.

[0074] When the deformation drive component 401 switches to the unfolded form, the second linear drive unit 4013 pushes the movable frame 4012 away from the fixed frame 4011. The transmission linkage 4014 unfolds, driving the transmission gear 4016 to rotate in the opposite direction. The follower gear 4017, in conjunction with this, causes the mounting rod 4018 to tilt and open. The deformable end component 402 adjusts its angle with the mounting rod 4018 to form a fan-shaped structure. The arc-shaped surface of the end component completely fits the inner wall of the rubber bushing hole, maximizing the contact area and avoiding the uneven distribution of detection force caused by traditional point or line contact. This ensures uniform pressure transmission and accurate data acquisition during stiffness testing. The adaptability design of the fan-shaped structure allows for the adjustment of the tilt angle of the mounting rod 4018 to accommodate the detection needs of holes with different diameters, breaking the limitation of the traditional detection structure's "single-form adaptation".

[0075] This optimized structure forms a closed-loop synergy with other components of the stiffness testing assembly 3: the drive rack 3024 of the annular drive structure 302 drives the deformation drive component 401 to extend and retract as a whole, realizing the switching of the testing station; the second longitudinal drive unit 301 adjusts the height of the testing structure to adapt to the rubber bushings at different installation positions; the first rotary drive unit 3022 ensures that the six test structures move forward and backward synchronously through gear-rack transmission. The "contraction-expansion" action of the deformation drive component 401, the angle adjustment of the gear-rack system, and the shape switching of the end component are precisely coordinated to form a complete testing process of "positioning-introduction-expansion fitting-testing-contraction withdrawal", which is fully automated and requires no manual intervention.

[0076] This invention solves the angle control problem of the end component by optimizing the design of the deformation drive component 401 with end shape adaptation. The fan-shaped unfolding shape realizes the fit of the inner wall of the fan-shaped hole, and the rectangular shrinking shape adapts to the smooth introduction of the narrow inlet, thus improving the versatility of the equipment.

[0077] Furthermore, such as Figures 8 to 10 As shown, the deformable end component 402 of the present invention includes a support frame 4021, an ejector portion 4022, and a first pressure sensor 4023. The two support frames 4021 are respectively installed at one end of four mounting rods 4018, and the two ejector portions 4022 are respectively located in the middle of the two support frames 4021. The ejector portion 4022 has an arc-shaped protrusion structure, and the two first pressure sensors 4023 are respectively installed on the two ejector portions 4022.

[0078] The deformable test structure 4 also includes a puncture deformation component 403; the puncture deformation component 403 includes a deformable sleeve 4031, a second rotary drive unit 4032, a rotary gear 4033, a pusher rack 4034, a lifting frame 4035, a lifting part 4036, a puncture part 4037, and a second pressure sensor 4038; twenty-four deformable sleeves 4031 are respectively disposed on both sides of two supporting frames 4021, two second rotary drive units 4032 are respectively mounted on two supporting frames 4021, two rotary gears 4033 are respectively mounted on the output ends of two second rotary drive units 4032, and the two rotary gears 4033 are respectively located inside the two supporting frames 4021, and four pusher racks 4034 are also present. Rods 4034 are respectively meshed and connected to both sides of two rotating gears 4033, and the two push rods 4034 on both sides of each rotating gear 4033 are arranged in opposite directions. Four lifting frames 4035 are respectively installed at one end of the four push rods 4034. Twenty-four lifting parts 4036 are respectively slidably connected to two spreading frames 4021. Twenty-four piercing parts 4037 are respectively slidably connected to the twenty-four lifting parts 4036, and the twenty-four piercing parts 4037 correspond one-to-one with the twenty-four deformable sleeves 4031. The piercing parts 4037 have a conical structure. Twenty-four second pressure sensors 4038 are respectively located between the twenty-four lifting parts 4036 and the twenty-four piercing parts 4037.

[0079] This invention upgrades the stiffness detection capability of the deformable test structure 4 through a dual-layer detection design of fit detection and puncture test, and constructs an integrated detection system of "surface contact stiffness feedback + point contact deformation perception". This solves the pain points of the detection structure that can only measure the overall stiffness, cannot capture local deformation characteristics, and has a single detection dimension, and greatly improves the comprehensiveness and accuracy of rubber bushing stiffness detection.

[0080] The deformable end component 402 achieves full-area contact detection of the inner wall of the hole using a combination of "expansion frame 4021 + arc-shaped ejector part 4022": two expansion frames 4021 are fixed to the ends of the mounting rod 4018, and the ejector part 4022 in the middle adopts an arc-shaped protrusion structure that precisely matches the curved surface of the inner wall of the rubber bushing hole; the first pressure sensor 4023 embedded in the ejector part 4022 can collect pressure data in real time under surface contact conditions, providing feedback on the overall deformation stiffness of the rubber bushing. When the deformation drive component 401 switches to the unfolded form, the expansion frame 4021 tilts with the mounting rod 4018 to form a fan-shaped structure, and the ejector part 4022 fits tightly against the inner wall of the hole. Through full-area pressure monitoring by the first pressure sensor 4023, an accurate assessment of the overall stiffness of the bushing is achieved, avoiding the one-sidedness of detection results caused by traditional local contact.

[0081] The puncture deformation component 403 achieves in-depth detection of the local deformation characteristics of the bushing through "gear transmission + precise puncture": Twenty-four deformable sleeves 4031 are arranged on both sides of the supporting frame 4021. The second rotary drive unit 4032 drives the rotating gear 4033 to rotate, which drives the lifting frame 4035 to translate through the meshing push rod 4034, thereby pushing the lifting part 4036 and the puncture part 4037 to move synchronously. The puncture part 4037 adopts a conical structure, which can accurately puncture local areas of the rubber bushing. The second pressure sensor 4038 between the lifting part 4036 and the puncture part 4037 collects the resistance changes in real time during the puncture process and provides feedback on the local elastic modulus, puncture resistance and other microscopic characteristics of the bushing. The twenty-four puncture parts 4037 are distributed on both sides of the supporting frame 4021 to achieve full coverage puncture test of different positions on the inner wall of the hole, capture the local stiffness difference of the bushing, and solve the defect of traditional detection that "emphasizes the whole and neglects the local".

[0082] The dual-layer detection structure forms a synergistic and complementary detection logic: when the deformable test structure 4 is inserted into the hole and unfolded, it first achieves surface contact through the ejector part 4022 of the deformable end component 402, and the first pressure sensor 4023 collects the overall stiffness data; then the puncture deformation component 403 is activated, and twenty-four puncture parts 4037 are simultaneously ejected and punctured into the inner wall of the bushing, and the second pressure sensor 4038 collects the local deformation data; the overall and local data corroborate each other, comprehensively reflecting the stiffness characteristics of the rubber bushing.

[0083] This invention employs a dual-layer detection design combining adhesion detection and puncture testing. The combination of the arc-shaped protruding part 4022 and the conical puncture part 4037 addresses both surface contact and point contact detection requirements, while multi-sensor data acquisition significantly improves the accuracy and comprehensiveness of the detection.

[0084] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An integrated assembly and testing device for rubber bushings, characterized in that, It includes an assembly component (1), a conveying component (2), and a stiffness testing component (3); The assembly component (1) is located on one side of the conveying component (2), and the stiffness detection component (3) is located on the other side of the conveying component (2); The assembly component (1) is used to install the rubber bushing to be inspected onto the workpiece; The conveying assembly (2) is used to install the workpiece and drive the workpiece to rotate and move. The stiffness testing component (3) includes a deformable test structure (4), and a plurality of the deformable test structures (4) correspond one-to-one with a plurality of holes in the rubber bushing to be tested. The deformable test structure (4) is used to extend into the holes in the rubber bushing to be tested to perform stiffness testing on the rubber bushing to be tested installed on the workpiece. The stiffness detection component (3) also includes a second longitudinal drive unit (301) and an annular drive structure (302). The second longitudinal drive unit (301) is mounted on another platform, the annular drive structure (302) is located at the output end of the second longitudinal drive unit (301), and a plurality of deformable test structures (4) are respectively located at a plurality of output ends of the annular drive structure (302), and the plurality of output ends are arranged in an equidistant ring. The annular drive structure (302) includes a ring frame (3021), a first rotary drive unit (3022), a drive gear (3023), and a drive rack (3024). The ring frame (3021) is installed at the output end of the second longitudinal drive unit (301), and a plurality of first rotary drive units (3022) are installed in a ring at equal intervals on the ring frame (3021). A plurality of drive gears (3023) are respectively installed at the output ends of the plurality of first rotary drive units (3022), and a plurality of drive racks (3024) are respectively meshed with the plurality of drive gears (3023), and the plurality of drive racks (3024) are all slidably connected to the ring frame (3021). A plurality of deformable test structures (4) are respectively located at the ends of the plurality of drive racks (3024). The deformable test structure (4) includes a deformation driving component (401) and a deformable end component (402). The deformation drive component (401) includes a fixed frame (4011), a movable frame (4012), a second linear drive unit (4013), a transmission link (4014), and a mounting base (4015). The fixed frame (4011) is installed at the end of the drive rack (3024), the movable frame (4012) is slidably connected to the fixed frame (4011), the second linear drive unit (4013) is installed at the end of the drive rack (3024), and the output end of the second linear drive unit (4013) is connected to the movable frame (4012). One end of the four sets of transmission links (4014) is movably connected to the top and bottom ends of the fixed frame (4011) and the movable frame (4012), respectively, and the two transmission links (4014) of each set are mirror images of each other. The four mounting seats (4015) are movably connected to the other end of the four sets of transmission links (4014). The deformation drive component (401) also includes a transmission gear (4016), a follower gear (4017), and a mounting rod (4018). The four transmission gears (4016) are respectively installed on the other end of the four transmission connecting rods (4014), and the four transmission gears (4016) are respectively movably connected to the four mounting seats (4015). The four follower gears (4017) are respectively movably connected to the four mounting seats (4015). The four mounting rods (4018) are respectively installed on the four follower gears (4017). The two deformable end parts (402) are respectively located at one end of the four mounting rods (4018). When the deformation driving component (401) is in the unfolded state, the mounting rods (4018) drive the two deformable end parts (402) to tilt and adapt to the fan-shaped structure. When the deformation driving component (401) is in the retracted state, the mounting rods (4018) drive the two deformable end parts (402) to return to the upright position and adapt to the rectangular structure.

2. The integrated assembly and testing equipment for rubber bushings according to claim 1, characterized in that, The assembly assembly (1) includes a transverse drive unit (101), a first longitudinal drive unit (102), and a clamping assembly structure (103). The lateral drive unit (101) is mounted on the platform, the first longitudinal drive unit (102) is mounted on the output end of the lateral drive unit (101), and the clamping assembly structure (103) is located at the output end of the first longitudinal drive unit (102).

3. The integrated assembly and testing equipment for rubber bushings according to claim 2, characterized in that, The clamping assembly structure (103) includes a fixed clamping frame (1031), a movable clamping frame (1032), a first linear drive unit (1033), a clamping end (1034), and a protrusion (1035). The fixed clamping frame (1031) is installed at the output end of the first longitudinal drive unit (102), and the movable clamping frame (1032) is slidably connected to the fixed clamping frame (1031). The first linear drive unit (1033) is installed on the fixed clamping frame (1031), and the output end of the first linear drive unit (1033) is connected to the movable clamping frame (1032). The two clamping ends (1034) are respectively installed on the fixed clamping frame (1031) and the movable clamping frame (1032). The two clamping ends (1034) form a clamping component adapted to the rubber bushing to be tested, and the protrusion (1035) is provided in the middle of the clamping component.

4. The integrated assembly and testing equipment for rubber bushings according to claim 1, characterized in that, The deformation driving component (401) has an unfolded form and a contracted form. When the deformation driving component (401) is in the unfolded form, the deformable test structure (4) unfolds and adapts to the inner wall of the hole of the rubber bushing to be tested, and the deformable end component (402) is attached to the inner wall of the hole. When the deformation driving component (401) is in the contracted form, the deformable test structure (4) contracts and adapts to the narrow inlet of the hole.

5. The integrated assembly and testing equipment for rubber bushings according to claim 1, characterized in that, The deformable end component (402) includes a support frame (4021), an ejector part (4022), and a first pressure sensor (4023). The two support frames (4021) are respectively installed at one end of the four mounting rods (4018). The two ejector parts (4022) are respectively located in the middle of the two support frames (4021). The ejector part (4022) is an arc-shaped protrusion structure. The two first pressure sensors (4023) are respectively installed on the two ejector parts (4022).

6. The integrated assembly and testing equipment for rubber bushings according to claim 5, characterized in that, The deformable test structure (4) also includes a puncture deformation component (403). The puncture deformation component (403) includes a deformation sleeve (4031), a second rotary drive unit (4032), a rotary gear (4033), a push rack (4034), a lifting frame (4035), a lifting part (4036), a puncture part (4037), and a second pressure sensor (4038). Several deformable sleeves (4031) are respectively disposed on both sides of two supporting frames (4021). Two second rotary drive units (4032) are respectively mounted on the two supporting frames (4021). Two rotary gears (4033) are respectively mounted on the output ends of the two second rotary drive units (4032), and the two rotary gears (4033) are respectively located inside the two supporting frames (4021). Four push racks (4034) are respectively meshed and connected to both sides of the two rotary gears (4033), and the two push racks (4034) on both sides of each rotary gear (4033) are connected to each other. 4) Reverse configuration: four lifting frames (4035) are respectively installed at one end of four push rods (4034), several lifting parts (4036) are respectively slidably connected in two spreading frames (4021), several piercing parts (4037) are respectively slidably connected on several lifting parts (4036), and several piercing parts (4037) correspond one-to-one with several deformable sleeves (4031). The piercing part (4037) is a conical structure, and several second pressure sensors (4038) are respectively located between several lifting parts (4036) and several piercing parts (4037).

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