A rubber tensile testing device for automobile rubber bushing production

Abstract

The application discloses a rubber tensile testing device for automobile rubber bushing production and relates to the technical field of rubber testing. The device comprises a testing mechanism for rubber tensile testing, two sets of testing components for operating the rubber tensile testing, two sets of fixing components installed on the testing components for clamping and limiting during the rubber tensile testing, a chuck one for fixing the inner ring at one end during the rubber bushing tensile testing, a plurality of chuck ones arranged in a circumferential array, a chuck two for fixing the outer ring at one end during the rubber bushing tensile testing, and a plurality of chuck twos arranged in a circumferential array. The device adopts double fixing of 'inner ring expansion + outer ring clamping', the chuck one expands the bushing inner ring, the chuck two clamps the outer ring, the fixing force increases automatically with the tension during stretching, the device avoids loosening, ensures firm clamping, and ensures that the bushing does not loosen and deviate during stretching and twisting.

Description

Technical Field

[0001] This invention relates to the field of rubber testing technology, and in particular to a rubber tensile strength testing device for automobile rubber bushing production. Background Technology

[0002] In the production of automotive rubber bushings, tensile strength is a core indicator for evaluating product quality, directly affecting the service life of the bushing and the driving safety of the vehicle.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems of rubber tensile testing devices used in the production of automotive rubber bushings: First, the clamping is unreliable. During the stretching process, the rubber bushing is prone to loosening due to the increase of the inner diameter, the decrease of the outer diameter, or vibration, which affects the test accuracy. Second, the operation is cumbersome. The clamping and unlocking need to be manually adjusted step by step, which is inefficient. Third, the fixing force cannot be adaptive. Changes in the force on the bushing during stretching can easily lead to fixing failure. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing rubber tensile testing devices for automotive rubber bushing production, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to solve the problems of unreliable clamping, cumbersome operation, and adaptive fixing force.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rubber tensile testing device for automotive rubber bushing production, comprising: a testing mechanism for performing rubber tensile testing, including two sets of testing components for operating the rubber tensile testing; the testing components are equipped with two sets of fixing components for clamping and limiting the rubber during the tensile testing; and a first clamp for fixing one end of the inner ring of the rubber bushing during the tensile testing, the number of which is several and arranged in a circumferential array; a second clamp for fixing one end of the outer ring of the rubber bushing during the tensile testing, the number of which is several and arranged in a circumferential array; and a protrusion. The first component is mounted on chuck one and chuck two to enhance the fixing effect of chuck one and chuck two on the rubber bushing; the driving component is used to drive multiple chucks to fix and release the inner ring of one end of the rubber bushing, and cooperates with chuck one; the transmission component is mounted on the driving component and cooperates with the driving component, and under the action of the driving component, drives multiple chucks two to fix and release the outer ring of one end of the rubber bushing; the positioning component is mounted on the driving component and the test assembly, and cooperates with the test assembly and the driving component respectively, and is used to position and unlock the driving component; the rotating component is mounted on the test assembly and the driving component, and is used to rotate and position the driving component.

[0008] As a preferred embodiment of the rubber tensile testing device for automotive rubber bushing production described in this invention, the testing component includes two symmetrically distributed vertical plates, with guide rods fixed at the four corners between the two vertical plates, and sliding sleeves slidably fitted on the surface of the guide rods. The number of sliding sleeves is eight, divided into two groups, with a square plate fixedly fitted on each group of sliding sleeves. A hydraulic cylinder is fixed on the side of each of the two vertical plates away from the guide rods, and a tension gauge is fixed at the output end of the hydraulic cylinder. A connecting plate rotates at one end of the tension gauge, and connecting rods arranged in a circular array are fixed between the connecting plate and the fixing component.

[0009] As a preferred embodiment of the rubber tensile strength testing device for automotive rubber bushing production according to the present invention, the driving component includes two circular plates rotating on two square plates, and a cylinder is fixed on one side of each of the two circular plates. A short block is fixed on the inner wall of the cylinder, and a short column is rotatably mounted on the short block. A plate is fixedly fitted on the surface of the short column, and one end of the plate is rotatably connected to a clamp. A circular sleeve is rotatably mounted on the inner wall of the cylinder. A driving rod slides on the circular plates and the cylinder, and the circular sleeve is fitted on the surface of the driving rod. The driving rod cooperates with a transmission component. A guide groove is opened on the surface of the driving rod. A ball is embedded in the inner wall of the circular sleeve, and the ball slides in the guide groove. A ring plate is fixedly mounted on the surface of the circular sleeve, and a circular block is slidably mounted thereon. A driving block is fixed on one side of the ring plate, and a groove is opened on one side of the circular block. The driving block cooperates with the groove and the circular block respectively.

[0010] In a preferred embodiment of the rubber tensile strength testing device for automotive rubber bushing production described in this invention, the following features are provided: Guide pins arranged in a circumferential array slide on the circular block, with one end of each guide pin fixed to the inner wall of the cylinder; a spring is fitted onto the surface of one end of each guide pin, with both ends of the spring fixed to the surface of the guide pin and the surface of the circular block, respectively; a short post is fixed to one end of a plate, with a clamp rotatably fitted onto the surface of the short post; a torsion spring is fitted onto the surface of the short post, with both ends of the torsion spring fixed to the surface of the clamp and the surface of the short post, respectively; torsion springs are fitted onto both ends of the short post, with both ends of the torsion spring fixed to the surface of the short post and the surface of the plate, respectively; a stop post is fixed to one end of the plate, cooperating with the clamp; a roller rotates at the other end of the plate, cooperating with the circular block; and a spring is fixed between the inner wall of the drive rod and the inner wall of the circular sleeve.

[0011] As a preferred embodiment of the rubber tensile strength testing device for automotive rubber bushing production according to the present invention, the transmission component includes a fixed plate fixed in a circumferential array on one side of a circular plate. A short column three is rotatably mounted on one end of the fixed plate, and a plate two is fixedly mounted on the surface of the short column three. One end of the plate two is rotatably connected to a clamp two. Pull rods distributed in a circumferential array slide on the circular plate, and a stop plate and a frame one are respectively fixed at both ends of the pull rods. The frame one is slidably mounted on the surface of one end of a drive rod. A groove distributed in a circumferential array is opened on the surface of one end of the drive rod. A slider distributed in a circumferential array is fixed on the inner wall of the frame one, and the slider slides in the groove. Two of the multiple pull rods are fitted with spring three, and the two ends of the spring three are respectively fixed to the surface of the stop plate and the surface of the circular plate.

[0012] As a preferred embodiment of the rubber tensile strength testing device for automobile rubber bushing production described in this invention, wherein: a short column four is fixed at one end of the plate two, and a clamp two is rotatably sleeved on the surface of the short column four; a stop column two is fixed at one end of the plate two, and the stop column two cooperates with the clamp two; a torsion spring three is sleeved on the surface of the short column four, and the two ends of the torsion spring three are respectively fixed to the surface of the clamp two and the surface of the short column four; a torsion spring four is sleeved on both ends of the surface of the short column three, and the two ends of the torsion spring four are respectively fixed to the surface of the short column three and the surface of the plate two; a roller two is rotatably mounted at the other end of the plate two, and the roller two cooperates with the abutment plate.

[0013] As a preferred embodiment of the rubber tensile strength testing device for automotive rubber bushing production described in this invention, the positioning element includes a groove formed in a circular plate, and a positioning block slides in the groove. One end of the drive rod has a positioning groove arranged in a linear array, and the positioning block cooperates with the positioning groove. A square groove is formed in the inner wall of the groove. A square block is fixed on the surface of the positioning block and slides in the square groove. A spring piece is fixed between the surface of the square block and the inner wall of the square groove.

[0014] In a preferred embodiment of the rubber tensile strength testing device for automotive rubber bushing production described in this invention, the following features are provided: unlocking plates arranged in a circumferential array slide on the circular plate; a frame two is fixed to one end of each unlocking plate and movably sleeved on the surface of the drive rod; abutment rods arranged in a circular array slide on the connecting plate; an inclined block is fixed to the surface of the clamp; an unlocking groove is provided on the positioning block; the unlocking plate cooperates with the unlocking groove and the inclined block respectively; a limiting block is fixedly sleeved on the surface of the abutment rod and cooperates with the connecting plate; and a spring piece two is fixed between the surface of the frame two and the surface of the circular plate.

[0015] As a preferred embodiment of the rubber tensile testing device for automotive rubber bushing production described in this invention, the rotating component includes a worm gear fixedly sleeved on the surface of a circular plate, a worm rotating on one side of the circular plate via a bearing seat, the worm meshing with the worm gear, and a motor fixed on one side of the circular plate, with the motor output shaft fixed to one end of the worm.

[0016] As a preferred embodiment of the rubber tensile testing device for automotive rubber bushing production described in this invention, wherein: a stop block is fixed at one end of the drive rod, a telescopic sleeve is fixed between the circular plate and the stop plate, and a cover is detachably fixed to one side of the circular plate.

[0017] The beneficial effects of this invention are as follows: 1. By adopting the double fixation of "inner ring expansion + outer ring clamping", the first clamp expands the inner ring of the bushing and the second clamp clamps the outer ring. When stretched, the fixing force increases adaptively with the tension, avoiding loosening and ensuring firm clamping. This ensures that the bushing does not loosen or shift during stretching and torsion.

[0018] 2. The clamping is automatically completed by the fixed components approaching each other, and the clamping is automatically unlocked after the test, which facilitates quick replacement of the bushing without manual intervention and simplifies the operation process. The inclined design of the chuck and the plate body means that the greater the bushing tension during stretching, the stronger the chuck fixing force. The adaptive matching test process ensures the reliability of the fixation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A scene depicting a rubber tensile testing device used in the production of automotive rubber bushings.

[0021] Figure 2 A partial sectional perspective view of a rubber tensile testing device used in the production of automotive rubber bushings.

[0022] Figure 3 Partial cross-sectional plan view of a rubber tensile testing device used in the production of automotive rubber bushings.

[0023] Figure 4 Rubber tensile testing device for automotive rubber bushing production Figure 3 Enlarged view of region A in the middle.

[0024] Figure 5 A partial sectional perspective view of the circular plate, drive rod, and cylinder of a rubber tensile testing device for automotive rubber bushing production.

[0025] Figure 6 Rubber tensile testing device for automotive rubber bushing production Figure 5 Enlarged view of region B in the middle.

[0026] Figure 7 Partial sectional perspective view of the square and round plates of the rubber tensile testing device used in the production of automotive rubber bushings.

[0027] Figure 8 Partial sectional perspective view of the frame, circular block, and ring plate of the rubber tensile testing device for automotive rubber bushing production.

[0028] Figure 9 A three-dimensional view showing the separation of the circular block and the drive block in a rubber tensile testing device used in the production of automotive rubber bushings.

[0029] In the diagram: 1. Testing mechanism; 11. Testing component; 12. Fixing component; 13. Abutment; 14. Telescopic sleeve; 2. Protrusion; 1211. Right angle surface; 3. Base; 4. Box body; 5. Cover body; 121. Clamp one; 122. Clamp two; 123. Driving component; 124. Transmission component; 125. Positioning component; 126. Rotating component; 111. Vertical plate; 112. Guide rod; 113. Sliding sleeve; 114. Square plate; 115. Tensile gauge; 116. Connecting... 117. Plate; 118. Connecting rod; 1231. Hydraulic cylinder; 1232. Round plate; 1233. Round cylinder; 1234. Short block; 1235. Short column one; 1236. Plate one; 1237. Round sleeve; 1238. Drive rod; 1239. Guide groove; 12310. Ball bearing; 12310. Ring plate; 12311. Round block; 12312. Drive block; 12313. Groove; 12314. Guide bolt; 12315. Spring one; 12316. Torsion spring one; 1 2317. Torsion Spring II; 12318. Stop Column I; 12319. Roller I; 12320. Spring II; 12321. Short Column II; 1241. Fixing Plate; 1242. Short Column III; 1243. Plate II; 1244. Pull Rod; 1245. Support Plate; 1246. Frame I; 1247. Slide Rail; 1248. Slider; 1249. Spring III; 12410. Short Column IV; 12411. Stop Column II; 12412. Torsion Spring III; 12 413. Torsion spring four; 12414. Roller two; 1251. Groove; 1252. Positioning block; 1253. Positioning groove; 1254. Square groove; 1255. Square block; 1256. Spring piece one; 1257. Unlocking plate; 1258. Frame two; 1259. Support rod; 12510. Inclined block; 12511. Unlocking groove; 12512. Limiting block; 12513. Spring piece two; 1261. Worm gear; 1262. Worm; 1263. Motor. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1, referring to Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a rubber tensile testing device for automobile rubber bushing production. The rubber tensile testing device for automobile rubber bushing production includes a testing mechanism 1.

[0034] Specifically, the testing mechanism 1 is used for tensile testing of rubber and includes two sets of testing components 11 for operating the tensile testing of rubber. This is existing technology, and the working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. The testing components 11 are equipped with two sets of fixing components 12 for clamping and limiting during the tensile testing of rubber.

[0035] After the inner and outer rings at both ends of the rubber bushing are fixed by the two sets of fixing components 12, the rubber can be tested by moving one or both sets of test components 11 away from each other. After the rubber bushing is put on the two fixing components 12, the two test components 11 drive the two fixing components 12 to move closer to each other, thereby directly fixing the two ends of the rubber bushing.

[0036] Specifically, clamp 121 is used to fix the inner ring at one end of the rubber bushing during tensile testing. There are several clamps, which are arranged in a circumferential array. Clamp 122 is used to fix the outer ring at one end of the rubber bushing during tensile testing. There are several clamps, which are arranged in a circumferential array. The clamps 121 and 122 on the two sets of fixing components 12 respectively abut and fix the inner and outer rings at both ends of the rubber bushing.

[0037] Specifically, protrusion 2 is provided on chuck 121 and chuck 22 to increase the fixing effect of chuck 121 and chuck 22 on the rubber bushing. There are several protrusions 2, which can increase the supporting effect of chuck 121 and chuck 22 on the inner ring of the rubber bushing and the clamping effect on the outer ring.

[0038] Specifically, the driving component 123 is used to drive multiple clamps 121 to fix and release the inner ring at one end of the rubber bushing. It cooperates with the clamps 121. When the two fixing components 12 approach each other, the driving components 123 on them interact, thereby causing the two sets of clamps 121 distributed in a circumferential array to expand outward and tightly abut against the inner ring at both ends of the rubber bushing. At the abutment point, the inner wall of the inner ring of the rubber bushing is slightly concave due to the action of the clamps 121. After the clamps 121 support and fix the inner ring of the rubber bushing, when the clamps 121 tend to move laterally under the test tension, the driving component 123 generates a supporting force on the clamps 121. Thus, as the test strength of the rubber bushing increases, the supporting effect also gradually increases, maintaining the clamping effect and preventing the bushing from loosening due to the increase in the inner diameter of the stretching bushing.

[0039] Specifically, the transmission component 124 is mounted on the drive component 123 and cooperates with the drive component 123. Under the action of the drive component 123, it drives multiple clamps 122 to fix and release the outer ring of one end of the rubber bushing. After the clamps 121 support and fix the inner ring of the rubber bushing, as the two drive components 123 continue to approach, the transmission component 124 causes the clamps 122, which are arranged in a circumferential array on the two sets of fixing components 12, to retract inward and closely abut against the outer rings at both ends of the rubber bushing. At the abutment point, the surface of the outer ring of the rubber bushing is slightly concave due to the action of the clamps 122. After the clamps 122 support and fix the outer ring of the rubber bushing, when the clamps 122 tend to move laterally under the test tension, the transmission component 124 generates a holding force on the clamps 122. Thus, as the test strength of the rubber bushing increases, the holding force also gradually increases, maintaining the clamping effect and preventing the bushing from loosening due to the shrinkage of the outer diameter under tension.

[0040] Specifically, the positioning component 125 is installed on the driving component 123 and the test component 11, and it cooperates with the test component 11 and the driving component 123 respectively. It is used to position and unlock the driving component 123. Through the setting of the positioning component 125, after the driving component 123 drives the first chuck 121 to support and fix the inner ring of the rubber bushing, and after the transmission component 124 drives the second chuck 122 to clamp and fix the outer ring of the rubber bushing, the driving component 123 can be positioned, and then the transmission component 124 can be positioned. This allows the first chuck 121 and the second chuck 122 to maintain the fixing effect on the rubber bushing, reducing the possibility of loosening during the test. After the test is completed, when it is necessary to release the fixing of the rubber bushing, it is only necessary to move the fixing component 12 one by one towards the test component 11 to release the fixing, without the need for manual operation.

[0041] Specifically, the rotating component 126 is mounted on the test assembly 11 and the drive component 123 and is used to rotate and position the drive component 123. The rotating component 126 can play a role in applying rotational force during the torsion and tension test of the rubber bushing, and the rotating component 126 itself has a self-locking function.

[0042] Example 2, refer to Figures 2-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0043] Specifically, the test assembly 11 includes two symmetrically distributed vertical plates 111. Guide rods 112 are fixed at the four corners between the two vertical plates 111, and sliding sleeves 113 are slidably fitted on the surface of the guide rods 112. There are eight sliding sleeves 113, which are divided into two groups. A square plate 114 is fixedly fitted on each group of sliding sleeves 113. A hydraulic cylinder 118 is fixed on the side of the two vertical plates 111 away from the guide rods 112. A tension gauge 115 is fixed at the output end of the hydraulic cylinder 118. A connecting plate 116 rotates at one end of the tension gauge 115. A connecting rod 117 arranged in a circular array is fixed between the connecting plate 116 and the fixing assembly 12.

[0044] There are several connecting rods 117, which indirectly connect the fixing components 12 and the connecting plate 116. After the two sets of fixing components 12 fix the two ends of the rubber bushing sleeved on them, the two hydraulic cylinders 118 are controlled to retract, thereby pulling the two sets of tension gauges 115, the connecting plate 116 and the fixing components 12 to move in opposite directions. The tension gauges 115 are used to test the tensile strength of the rubber bushing. The control panel is installed on the housing 4 and is electrically connected to the tension gauges 115 and the motor 1263. The test result analysis and corresponding calculation of the tension gauges 115 are all existing technologies. The working principle of this part is also existing technology and can be clearly understood by those skilled in the art. It will not be described in detail here. The tension gauges 115 are existing technologies and can be clearly understood by those skilled in the art. They will not be described in detail here. The tension gauges 115 are rotatably connected to the connecting plate 116 through a universal ball joint.

[0045] Specifically, the driving component 123 includes two circular plates 1231 that rotate on two square plates 114, and a cylinder 1232 is fixed on one side of each of the two circular plates 1231. A short block 1233 is fixed on the inner wall of the cylinder 1232, and a short column 1234 rotates on the short block 1233. A plate 1235 is fixedly sleeved on the surface of the short column 1234, and one end of the plate 1235 is rotatably connected to the clamp 121. A circular sleeve 1236 rotates on the inner wall of the cylinder 1232. A driving rod 1237 slides on the circular plates 1231 and the cylinder 1232, and the circular sleeve 1236 is sleeved on the cylinder 1232. The drive rod 1237 has a guide groove 1238 on its surface. The inner wall of the sleeve 1236 is fitted with a ball bearing 1239, which slides in the guide groove 1238. The sleeve 1236 has a ring plate 12310 fixedly fitted on its surface and a round block 12311 slidably fitted on its surface. A drive block 12312 is fixed on one side of the ring plate 12310. A groove 12313 is opened on one side of the round block 12311, and the drive block 12312 cooperates with the groove 12313 and the round block 12311 respectively.

[0046] The circular plate 1231 is rotatably connected to the square plate 114 via a bearing, and the short column 1234 is rotatably connected to the short block 1233 via a bearing. The plate 1235 is inclined. With this setting, after the clamp 121 supports and fixes the inner ring of the rubber bushing, when the clamp 121 tends to move laterally under the test tension, the plate 1235 generates a supporting force on the clamp 121. Thus, as the test strength of the rubber bushing increases, the supporting effect also gradually increases. The drive rods 1237 on the two drive members 123 are offset at one end. When they approach each other, it does not affect the contact between the drive rod 1237 on one drive member 123 and the cylinder 1232 on the other drive member 123. Then, under the continuous action of approaching each other, the clamps 121 distributed in a circumferential array expand outward and closely contact the inner rings at both ends of the rubber bushing.

[0047] The sleeve 1236 is rotatably connected to the cylinder 1232 via a bearing. The drive rod 1237 passes through the circular plate 1231 and the cylinder 1232 and is slidably connected to them. The ball bearing 1239 rotates on the inner wall of the sleeve 1236. The guide groove 1238 is divided into three parts. The first and third parts prevent the sleeve 1236 from rotating when the ball bearing 1239 moves within them. The second part allows the sleeve 1236 to rotate when the ball bearing 1239 moves within it. There are several drive blocks 12312 and grooves 12313, which are arranged in a circumferential array. The grooves 12313 and the drive block 12312 are connected in a circumferential array. Each block 12312 has an inclined surface that cooperates with each other. With this arrangement, as the drive rod 1237 moves with the fixing component 12, it abuts against the cylinder 1232 on the other side of the fixing component 12. As they continue to move closer to each other, the drive rod 1237 moves within the sleeve 1236, causing the ball 1239 to pass from the first part of the guide groove 1238 through the second part and into the third part. This causes the ring plate 12310 to rotate, causing the drive block 12312 to rotate out of the groove 12313 on the circular block 12311, thereby pushing the circular block 12311 to move.

[0048] Specifically, guide bolts 12314 arranged in a circumferential array slide on the circular block 12311, and one end of the guide bolt 12314 is fixed to the inner wall of the cylinder 1232. The guide bolt 12314 passes through the circular block 12311 and is slidably connected to it. There are several guide bolts 12314, and one end is provided with a protrusion and is integrally formed with it. The guide bolts 12314 guide and limit the circular block 12311, so that when the driving block 12312 is squeezed out from the groove 12313 on it, the circular block 12311 will not rotate, but can only move.

[0049] A spring 12315 is fitted onto one end of the guide bolt 12314, with its two ends fixed to the surfaces of the guide bolt 12314 and the circular block 12311, respectively. The spring 12315 compresses the circular block 12311 as it moves, providing force for its subsequent resetting. A short post 12321 is fixed to one end of a plate 1235, and a chuck 121 is rotatably fitted onto the surface of the short post 12321. Two short posts 12321 are provided at one end of each plate 1235, and the chuck 121 is connected to the short post 12321 via bearings. The 12321 is rotatably connected. A torsion spring 12316 is sleeved on the surface of the second short post 12321. The two ends of the torsion spring 12316 are fixed to the surface of the first chuck 121 and the surface of the second short post 12321, respectively. By setting the torsion spring 12316, the state of the first chuck 121 at one end of the plate 1235 is restricted, so that each chuck 121 distributed in the circumferential array is always in the corresponding state and will not be in a messy state due to the center of gravity, thus maintaining consistency. When the first chuck 121 rotates relative to the plate 1235, it deforms to provide force for subsequent reset.

[0050] Both ends of the short column 1234 are fitted with torsion springs 12317, and the two ends of the torsion springs 12317 are fixed to the surface of the short column 1234 and the surface of the plate 1235, respectively. The torsion springs 12317 limit the position of the plate 1235, ensuring that each plate 1235 in the circular array remains in its corresponding state and does not become disordered due to the center of gravity, maintaining consistency. Furthermore, the plate 1235 deforms when it rotates, providing force for subsequent resetting. One end of the plate 1235 is fixed with a stop post 1231. 8. The stop post 12318 cooperates with the chuck 121. The other end of the plate 1235 has a rotating roller 12319, which cooperates with the round block 12311. A spring 12320 is fixed between the inner wall of the drive rod 1237 and the inner wall of the round sleeve 1236. With the setting of the spring 12320, when the drive rod 1237 undergoes relative displacement on the cylinder 1232, the spring 12320 is stretched, and the generated elastic force provides a force for the reset between the drive rod 1237 and the cylinder 1232.

[0051] By setting the stop post 12318, after the chuck 121 supports and fixes the rubber bushing, the stop post 12318 acts as a limit when the chuck 121 contacts the stop post 12318. As the test tension increases, when the chuck 121 tends to move laterally, the plate 1235 generates a supporting force on the chuck 121, preventing the chuck 121 from rotating on the plate 1235. Therefore, as the test strength of the rubber bushing increases, the supporting effect gradually increases. The roller 12319 is rotatably connected to the plate 1235 via a bearing, reducing the impact of the circular block 12311 moving and pushing the plate 1235 to rotate. The friction between the circular block 12311 and the rollers 12319 on one end of the multiple plates 1235 come into contact and press when the circular block 12311 moves, causing the multiple plates 1235 to rotate and bring the multiple clamps 121 close to the rubber bushing fitted on the cylinder 1232. The clamps 121 are in close contact with the inner ring of the rubber bushing for clamping and fixing. After the clamps 121 support and fix the inner ring of the rubber bushing, when the clamps 121 tend to move laterally due to the effect of the test stretch on the clamps 121, the plates 1235 will generate a holding force with the help of the clamps 121. The circular block 12311 will not hinder the slight deflection of the plates 1235.

[0052] Example 3, referring to Figures 2-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0053] Specifically, the transmission component 124 includes a fixed plate 1241 fixed in a circumferential array to one side of the circular plate 1231. A short column 1242 is rotatably attached to one end of the fixed plate 1241, and a plate 1243 is fixedly sleeved on the surface of the short column 1242. The short column 1242 is rotatably connected to the fixed plate 1241 via a bearing. One end of the plate 1243 is rotatably connected to a clamp 122. Pull rods 1244, arranged in a circumferential array, slide on the circular plate 1231. A stop plate 1245 and a frame 1246 are respectively fixed to both ends of the pull rods 1244. There are several pull rods 1244, and each pull rod 1244 passes through and slidably connects to the circular plate 1231. The frame 1246... 246 is slidably sleeved on one end surface of the drive rod 1237. One end surface of the drive rod 1237 has a groove 1247 arranged in a circumferential array. The inner wall of the frame 1246 is fixed with a slider 1248 arranged in a circumferential array, and the slider 1248 slides in the groove 1247. Two of the multiple pull rods 1244 are sleeved with spring three 1249, and the two ends of the spring three 1249 are respectively fixed to the surface of the abutment plate 1245 and the surface of the circular plate 1231. Through the setting of the spring three 1249, the abutment plate 1245 is compressed when it moves with the pull rod 1244, providing a force for the subsequent reset of the abutment plate 1245, the pull rod 1244 and the frame 1246.

[0054] There are two slides 1247 and two sliders 1248. With the slides 1247 and sliders 1248 configured, when the drive rod 1237 drives the sleeve 1236 to rotate, the ball 1239 moves from the first part of the guide groove 1238 through the second part to the third part. At this time, the slider 1248 moves within the slide 1247. After the chuck 121 supports and fixes the inner ring of the rubber bushing, the drive rod 1237 continues to move on the cylinder 1232 and the sleeve 1236. The ball 1239 moves in the third part of the guide groove 1238. At this point, the slider 1248 can no longer move within the slide 1247. Therefore, the drive rod 1237 pushes the slider 1248 and the frame 1248 together. 246 moves, thereby pulling the lever 1244 and the abutment 1245 to move. When the abutment 1245 moves, it contacts and presses against the rollers 12414 on one end of the multiple plates 1243. This causes the multiple plates 1243 to rotate and bring the multiple clamps 122 close to the rubber bushing fitted on the cylinder 1232. The clamps 122 are in close contact with the outer ring of the rubber bushing for clamping and fixing. The plates 1243 are set at an angle. The setting of the plates 1243 has the same effect on the clamps 122 as the plates 1235 have on the clamps 121. As the rubber bushing is stretched during the test, the clamping effect on the clamps 122 gradually increases as the test strength increases, maintaining the clamping effect.

[0055] Specifically, one end of plate 2 1243 is fixed with short post 4 12410, and clamp 2 122 is rotatably sleeved on the surface of short post 4 12410. One end of plate 2 1243 is fixed with stop post 2 12411, and stop post 2 12411 cooperates with clamp 2 122. A torsion spring 3 12412 is sleeved on the surface of short post 4 12410, and the two ends of torsion spring 3 12412 are respectively fixed to the surface of clamp 2 122 and the surface of short post 4 12410. Both ends of short post 3 1242 are sleeved with torsion spring 4 12413, and the two ends of torsion spring 4 12413 are respectively fixed to the surface of short post 3 1242 and the surface of plate 2 1243. The other end of plate 2 1243 has a rotatable roller 2 12414, and roller 2 12414 cooperates with abutment plate 1245.

[0056] Two short posts 12410 are provided at one end of plate 2 1243. Clamp 2 122 is rotatably connected to short posts 12410 via bearings. The function of torsion spring 3 12412 on clamp 1 121 is the same as that of torsion spring 1 12316 on clamp 1 121. The function of torsion spring 4 12413 on plate 2 1243 is the same as that of torsion spring 2 12317 on plate 1 1235. Roller 2 12414 is rotatably connected to plate 2 1243 via bearings. The working principle of roller 2 12414 is the same as that of roller 1 12319, except that its function is to abut against plate 1245 and plate 2 1243.

[0057] Specifically, the positioning component 125 includes a groove 1251 formed in the circular plate 1231, and a positioning block 1252 sliding in the groove 1251. One end of the drive rod 1237 has positioning grooves 1253 arranged in a linear array, and the positioning block 1252 cooperates with the positioning groove 1253. A square groove 1254 is formed in the inner wall of the groove 1251. A square block 1255 is fixed on the surface of the positioning block 1252, and the square block 1255 slides in the square groove 1254. The square groove 1254 and the square block 1255 guide and limit the positioning block 1252. A spring piece 1256 is fixed between the surface of the square block 1255 and the inner wall of the square groove 1254. The spring piece 1256 deforms when the positioning block 1252 moves the square block 1255, providing a force for the subsequent reset of the positioning block 1252 and the square block 1255.

[0058] There are two grooves 1251 and several positioning grooves 1253. The end of the positioning groove 1253 that cooperates with the positioning block 1252 is provided with an inclined surface. With this setting, when the drive rod 1237 moves on the circular plate 1231, after one end of the positioning block 1252 is inserted into the positioning groove 1253, as the drive rod 1237 continues to move, it can squeeze the positioning block 1252 to move away from the original positioning groove 1253. Then, after the first chuck 121 and the second chuck 122 fix the rubber bushing, the drive rod 1237 no longer moves. The positioning block 1252 is inserted into the positioning groove 1253. When the two fixing components 12 move away in opposite directions, when the second spring 12320 provides the return force of the drive rod 1237, the positioning block 1252 positions the drive rod 1237 and prevents it from moving back, thereby limiting the first chuck 121 and the second chuck 122.

[0059] Unlocking plates 1257 arranged in a circular array slide on the circular plate 1231. The unlocking plates 1257 pass through the circular plate 1231 and are slidably connected to it. A frame 1258 is fixed to one end of the unlocking plate 1257 and is movably sleeved on the surface of the drive rod 1237. A stop rod 1259 arranged in a circular array slides on the connecting plate 116. An inclined block 12510 is fixed to the surface of the clamp 121. An unlocking groove 12511 is opened on the positioning block 1252. The unlocking plates 1257 cooperate with the unlocking groove 12511 and the inclined block 12510 respectively. A limiting block 12512 is fixedly sleeved on the surface of the stop rod 1259 and cooperates with the connecting plate 116. A spring piece 12513 is fixed between the surface of the frame 1258 and the surface of the circular plate 1231.

[0060] The circular plate 1231 and the cylindrical tube 1232 are provided with through grooves that cooperate with the movement of the unlocking plate 1257. Both one end of the unlocking plate 1257 and the unlocking groove 12511 are provided with inclined surfaces. With this arrangement, after the fixing component 12 fixes the rubber bushing, and the tensile strength test of the rubber bushing is completed using the testing component 11, the extension of one side's hydraulic cylinder 118 and the retraction of the other side's hydraulic cylinder 118 are controlled. The retraction of one side's hydraulic cylinder 118 drives the connecting plate 116 and the abutment rod 1259 on one side of the fixing component 12 to move towards the vertical plate 111. After the abutment rod 1259 abuts against the vertical plate 111, as the square plate 114 and the round plate 1231 move, the unlocking plate 1257 inserts into the unlocking groove 12511 and presses the positioning block 1252 to move, causing the positioning block 1252 to disengage from the positioning groove 1253 and release the positioning of the drive rod 1237. Under the action of the spring 12320, the drive rod 1237 is reset, thereby releasing the fixation of the rubber of the first clamp 121 and the second clamp 122. Then, the retraction of the hydraulic cylinder 118 on the other side is controlled to release the fixation of the other end of the rubber in the same way as above.

[0061] By setting the inclined block 12510, after the unlocking plate 1257 is inserted into the unlocking groove 12511 and passes through it, it can press the clamp 121 that has not been separated from the rubber after contacting and pressing with the inclined block 12510, thereby causing the clamp 121 to rotate and tilt, so that it is separated from the concave position formed between it and the rubber, which facilitates unlocking and separation. By setting the spring piece 12513, it deforms when the unlocking plate 1257 and the frame 1258 move, providing force for subsequent reset. The limiting block 12512 limits the stop rod 1259 and the unlocking plate 1257 to prevent the unlocking plate 1257 from separating from the circular plate 1231.

[0062] Example 4, refer to Figures 1-9 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0063] Specifically, the rotating component 126 includes a worm gear 1261 fixedly sleeved on the surface of the circular plate 1231, a worm 1262 rotating on one side of the circular plate 1231 through a bearing seat, and the worm 1262 meshing with the worm gear 1261. A motor 1263 is fixed on one side of the circular plate 1231, and the output shaft of the motor 1263 is fixed to one end of the worm 1262.

[0064] Motor 1263 is a servo motor, which can precisely control the rotation of worm 1262. When it is necessary to test the recovery of the rubber bushing to a certain extent after torsion, the operation of motor 1263 is controlled to make worm 1262 rotate, which in turn makes worm wheel 1261 and fixed component 12 rotate. The two fixed components 12 rotate in opposite directions. After the torsion is completed, the fixed component 12 releases the fixation on the rubber bushing. Since the rubber bushing is fitted on the cylinder 1232, the rubber bushing will not jump around during recovery after the fixation is released, which plays a protective role. The same principle applies during tensile testing, which plays a protective role during the recovery process.

[0065] Specifically, a stop block 13 is fixed to one end of the drive rod 1237, and a telescopic sleeve 14 is fixed between the circular plate 1231 and the stop plate 1245. A cover 5 is detachably fixed to one side of the circular plate 1231. The stop block 13 increases the contact area between the drive rod 1237 on one side and the cylindrical tube 1232 on the other side. The telescopic sleeve 14 protects the internal structure without affecting the movement of the stop plate 1245.

[0066] Specifically, both chuck 121 and chuck 22 are provided with right angle surfaces 1211. The bottom of the vertical plate 111 is fixed with a base 3, and the top of the base 3 is fixed with a box body 4 with a foldable and openable door. By setting the right angle surfaces 1211, the effect between the concave areas formed by the clamping and fixing of the rubber bushing by chuck 121 and chuck 222 is increased. Therefore, when the tensile rubber bushing tends to move laterally on chuck 121 and chuck 222 during the tensile test, the right angle surfaces 1211 can provide better resistance.

[0067] It should be noted that the two fixing components 12 are separate between tests. The rubber bushing is placed on the cylinder 1232 of the two fixing components 12. As the two fixing components 12 approach each other, the two ends of the rubber bushing contact the circular plates 1231 on both sides respectively. Then, as the fixing components 12 approach each other, the clamps 121 and 122 fix the rubber bushing.

[0068] During use, the bushing is installed and initially positioned as follows: the rubber bushing is placed on the cylinder 1232 of the two sets of fixing components 12, and the control test component 11 drives the two sets of fixing components 12 to move closer to each other. The two ends of the bushing contact the circular plate 1231, and the initial positioning is completed.

[0069] Double fixation: As the fixing component 12 continues to approach, the driving component 123 interacts with each other, pushing the circular block 12311 to move, causing the first plate 1235 to rotate, so that the first clamp 121 expands the inner ring of the bushing and abuts tightly; then the transmission component 124 is linked, pulling the abutment plate 1245 to move, driving the second plate 1243 to rotate, and the second clamp 122 clamps the outer ring of the bushing. The protrusion 2 and the right angle surface 1211 enhance the fixing effect, forming double fixation.

[0070] Tensile test: Hydraulic cylinder 118 drives two sets of fixed components 12 to move in opposite directions, and tensile gauge 115 monitors the tensile force in real time to test the tensile strength of the bushing; positioning component 125 locks the driving component 123 to ensure that the fixed components 12 do not loosen during the tensile process and to ensure test accuracy.

[0071] Torsional recovery test: Motor 1263 drives worm gear 1262 and worm wheel 1261 to rotate fixed component 12 and apply torsional force to bushing; after the fixation is released, observe the torsional recovery of bushing and complete multi-dimensional test; after the test, fixed component 12 moves in the opposite direction, automatically unlocks chuck one 121 and chuck two 122, and removes bushing.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rubber tensile strength testing device for automotive rubber bushing production, characterized in that: include, The testing mechanism (1), used for tensile testing of rubber, includes two sets of testing components (11) for operating the tensile testing of rubber, wherein the testing components (11) are equipped with two sets of fixing components (12) for clamping and limiting the rubber during the tensile testing; and, Clamp 1 (121) is used to fix the inner ring at one end of the rubber bushing during tensile testing. There are several clamps, which are distributed in a circumferential array. Clamp 2 (122) is used to fix one end of the outer ring during the tensile test of the rubber bushing. There are several clamps, which are distributed in a circular array. The protrusion (2) is provided on the first chuck (121) and the second chuck (122) to increase the fixing effect of the first chuck (121) and the second chuck (122) on the rubber bushing; The driving component (123) is used to drive multiple chucks (121) to fix and release the inner ring of one end of the rubber bushing, and cooperates with the chucks (121); The transmission component (124) is installed on the drive component (123) and cooperates with the drive component (123). Under the action of the drive component (123), it drives multiple clamps (122) to fix and release the outer ring of one end of the rubber bushing. The positioning component (125) is installed on the driving component (123) and the test component (11), and it cooperates with the test component (11) and the driving component (123) respectively to position and unlock the driving component (123); A rotating component (126) is mounted on the test assembly (11) and the drive component (123) for rotating and positioning the drive component (123).

2. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 1, characterized in that: The test assembly (11) includes two vertical plates (111) symmetrically distributed. Guide rods (112) are fixed at the four corners between the two vertical plates (111). Sliding sleeves (113) are slidably fitted on the surface of the guide rods (112). There are eight sliding sleeves (113) in total, divided into two groups. A square plate (114) is fixedly fitted on each group of sliding sleeves (113). A hydraulic cylinder (118) is fixed on the side of the two vertical plates (111) away from the guide rods (112). A tension gauge (115) is fixed at the output end of the hydraulic cylinder (118). A connecting plate (116) rotates at one end of the tension gauge (115). A connecting rod (117) arranged in a circular array is fixed between the connecting plate (116) and the fixing assembly (12).

3. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 2, characterized in that: The driving component (123) includes two circular plates (1231) rotating on two square plates (114), and a cylinder (1232) is fixed on one side of each of the two circular plates (1231). A short block (1233) is fixed on the inner wall of the cylinder (1232), and a short column (1234) rotates on the short block (1233). A plate (1235) is fixedly sleeved on the surface of the short column (1234), and one end of the plate (1235) is rotatably connected to a clamp (121). A circular sleeve (1236) rotates on the inner wall of the cylinder (1232). A driving rod (1237) slides on the circular plates (1231) and the cylinder (1232), and the circular sleeve (1236) is sleeved on the driving component. On the surface of the rod (1237), the driving rod (1237) cooperates with the transmission component (124). The surface of the driving rod (1237) is provided with a guide groove (1238). The inner wall of the sleeve (1236) is provided with a ball (1239), and the ball (1239) slides in the guide groove (1238). The surface of the sleeve (1236) is fixedly fitted with a ring plate (12310) and slidably fitted with a round block (12311). A driving block (12312) is fixed on one side of the ring plate (12310). A groove (12313) is provided on one side of the round block (12311), and the driving block (12312) cooperates with the groove (12313) and the round block (12311) respectively.

4. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 3, characterized in that: The circular block (12311) has guide pins (12314) arranged in a circular array that slide on it. One end of each guide pin (12314) is fixed to the inner wall of the cylinder (1232). A spring (12315) is fitted on the surface of one end of each guide pin (12314), and the two ends of the spring (12315) are fixed to the surface of the guide pin (12314) and the surface of the circular block (12311), respectively. A short post (12321) is fixed to one end of the plate (1235), and a clamp (121) is rotatably fitted onto the surface of the short post (12321). A torsion spring (12316) is fitted on the surface of the short post (12321), and the two ends of the torsion spring (12316) are fixed to the clamp (12311), respectively. (121) Surface and short post two (12321) Surface, both ends of short post one (1234) are fitted with torsion spring two (12317), and the two ends of torsion spring two (12317) are respectively fixed to the surface of short post one (1234) and the surface of plate one (1235). One end of plate one (1235) is fixed with a stop post one (12318), and the stop post one (12318) cooperates with the clamp one (121). The other end of plate one (1235) is rotated with a roller one (12319), and the roller one (12319) cooperates with the round block (12311). Spring two (12320) is fixed between the inner wall of the drive rod (1237) and the inner wall of the round sleeve (1236).

5. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 4, characterized in that: The transmission component (124) includes a fixed plate (1241) fixed in a circumferential array on one side of a circular plate (1231). One end of the fixed plate (1241) has a short column three (1242) that rotates, and a plate two (1243) is fixedly sleeved on the surface of the short column three (1242). One end of the plate two (1243) is rotatably connected to the clamp two (122). Pull rods (1244) distributed in a circumferential array slide on the circular plate (1231), and the two ends of the pull rods (1244) are respectively fixed with a stop plate (1245) and a frame one (1246). The frame (1246) is slidably sleeved on one end surface of the drive rod (1237). The drive rod (1237) has a groove (1247) arranged in a circular array on one end surface. The inner wall of the frame (1246) is fixed with a slider (1248) arranged in a circular array, and the slider (1248) slides in the groove (1247). Two of the multiple pull rods (1244) are sleeved with spring three (1249), and the two ends of the spring three (1249) are respectively fixed to the surface of the abutment plate (1245) and the surface of the circular plate (1231).

6. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 5, characterized in that: One end of the second plate (1243) is fixed with a short post four (12410), and the clamp two (122) is rotatably sleeved on the surface of the short post four (12410). One end of the second plate (1243) is fixed with a stop post two (12411), and the stop post two (12411) cooperates with the clamp two (122). A torsion spring three (12412) is sleeved on the surface of the short post four (12410), and the two ends of the torsion spring three (12412) are respectively fixed. The short column three (12410) is fixed on the surface of the clamp two (122) and the surface of the short column three (1242). Both ends of the short column three (1242) are fitted with torsion spring four (12413), and the two ends of the torsion spring four (12413) are fixed to the surface of the short column three (1242) and the surface of the plate two (1243) respectively. The other end of the plate two (1243) has a roller two (12414) that rotates, and the roller two (12414) cooperates with the abutment plate (1245).

7. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 3, characterized in that: The positioning component (125) includes a groove (1251) opened in a circular plate (1231), and a positioning block (1252) slides in the groove (1251). The surface of one end of the drive rod (1237) is provided with positioning grooves (1253) arranged in a linear array, and the positioning block (1252) cooperates with the positioning groove (1253). The inner wall of the groove (1251) is provided with a square groove (1254). A square block (1255) is fixed on the surface of the positioning block (1252), and the square block (1255) slides in the square groove (1254). A spring piece (1256) is fixed between the surface of the square block (1255) and the inner wall of the square groove (1254).

8. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 7, characterized in that: Unlocking plates (1257) arranged in a circular array slide on the circular plate (1231). A frame (1258) is fixed to one end of each unlocking plate (1257), and the frame (1258) is movably fitted onto the surface of the drive rod (1237). A stop rod (1259) arranged in a circular array slides on the connecting plate (116). An inclined block (12510) is fixed to the surface of the clamp (121). The positioning block (12... 52) An unlocking groove (12511) is provided on the upper part. The unlocking plate (1257) cooperates with the unlocking groove (12511) and the inclined block (12510) respectively. The surface of the abutment (1259) is fixedly fitted with a limiting block (12512), and the limiting block (12512) cooperates with the connecting plate (116). A spring piece (12513) is fixed between the surface of the frame (1258) and the surface of the round plate (1231).

9. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 2, characterized in that: The rotating component (126) includes a worm gear (1261) fixedly sleeved on the surface of a circular plate (1231). A worm (1262) is rotatably mounted on one side of the circular plate (1231) via a bearing seat, and the worm (1262) meshes with the worm gear (1261). A motor (1263) is fixed on one side of the circular plate (1231), and the output shaft of the motor (1263) is fixed to one end of the worm (1262).

10. The rubber tensile strength testing device for automotive rubber bushing production as described in claim 5, characterized in that: One end of the drive rod (1237) is fixed with a stop block (13), and a telescopic sleeve (14) is fixed between the circular plate (1231) and the stop plate (1245). A cover (5) is detachably fixed on one side of the circular plate (1231).

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