Device for detecting breaking force of extremely-high-strength steel cord for riding tire

Abstract

The invention relates to the technical field of steel cord detection, in particular to a breaking force detection device for an extremely-high-strength steel cord for a riding tire. Comprising a rack, a hydraulic push rod is installed on the rack, and the telescopic end of the hydraulic push rod is fixedly connected with an upper fixing plate; the fixing seat is fixedly connected to the rack, a lower fixing plate is fixedly connected to the fixing seat, and the lower fixing plate is located below the upper fixing plate; the two winding columns are symmetrically distributed and fixedly connected to the upper fixing plate and the lower fixing plate respectively, a plurality of wire pressing blocks are connected to the winding columns in a sliding mode, and all the wire pressing blocks are located in the same vertical plane. The steel cord between the two wrapping posts is limited in a vertical line through the cord pressing block, so that the situation that the steel cord horizontally slides along the wrapping posts in the test process is avoided, the test process is more rigorous, and more accurate and more persuasive data are obtained in the steel cord breaking tensile test.

Description

Technical Field

[0001] The invention relates to the technical field of steel cord detection, in particular to a breaking tension detection device for extremely high-strength steel cords used in vehicle tires. Background Art

[0002] The steel cord breaking tensile test is an important test to detect the actual performance of the steel cord. This test provides important parameters for producing tires using the steel cord by accurately measuring the actual breaking force of the steel cord.

[0003] A tensile testing device is required for the breaking tensile test of steel cord. There are usually two types of clamps for clamping the steel cord in the tensile testing device. One clamp is to directly clamp the steel cord on a fixed clamp, and the other clamp is to wind the steel cord on a roller clamp by winding, and then squeeze and clamp the steel cord in the wound state by an extrusion piece. Among the above two methods of clamping the steel cord, the method of directly clamping the steel cord with a clamp is only suitable for steel cords with larger diameters, fewer wires, and weaker structures. When clamping steel cords with complex structures and more and thinner wires, the steel cords are prone to slipping in the clamps, resulting in inaccurate test data. When using a roller clamp, the steel cord is usually freely wound on the roller clamp, and the upper and lower ends of the steel cord are usually not on the same vertical line, which affects the accuracy of the data. In addition, the winding path of the steel cord is chaotic when winding, which causes the steel cord to slide horizontally on the roller clamp when subjected to force, which also affects the accuracy of the test. Summary of the invention

[0004] In order to overcome the disadvantage of the existing tension detection device that it is difficult for the clamp to accurately clamp the steel cord when performing a breaking tensile test on the steel cord, which affects the test accuracy, the present invention provides an extremely high-strength steel cord breaking tension detection device for passenger car tires.

[0005] The technical implementation scheme of the present invention is: a breaking tension detection device for extremely high-strength steel cords for passenger tires, comprising: A frame, on which a hydraulic push rod is mounted, and an upper fixing plate is fixedly connected to the telescopic end of the hydraulic push rod; A fixing seat, fixedly connected to the frame, a lower fixing plate fixedly connected to the fixing seat, and the lower fixing plate is located below the upper fixing plate; The winding posts are symmetrically distributed and fixed to the upper fixing plate and the lower fixing plate respectively. A plurality of wire pressing blocks are slidably connected to the winding posts, and all the wire pressing blocks are located in the same vertical plane. The winding mechanism is arranged on the upper fixed plate and is used for automatically winding the steel cord regularly around the two winding poles and controlling the adjacent wire pressing blocks to clamp the steel cord.

[0006] Furthermore, the wire pressing block is provided with an arcuate surface, and the winding post is provided with a plurality of arcuate grooves. The arcuate grooves on the winding post correspond one-to-one to the wire pressing block on the winding post, and the arcuate surface of the wire pressing block and the adjacent arcuate grooves jointly clamp the steel cord.

[0007] Furthermore, the curvature of the arc surface on the wire pressing block is less than π / 2.

[0008] Furthermore, the winding mechanism comprises: There are two rotating rings, which are rotatably connected to the upper fixed plate and the lower fixed plate respectively, the rotating ring is coaxial with the adjacent winding column, the upper fixed plate and the lower fixed plate are both equipped with motors, and the output shaft of the motor is driven by the adjacent rotating ring through a gear set; There are two first fixed slide rails, which are respectively fixed to the adjacent rotating rings, the first fixed slide rails are slidably connected to the first sliding blocks, and a first elastic member is installed between the two, and a quick clamp is installed on the first sliding block close to the upper fixed plate; There are two driving components, which are respectively arranged in adjacent winding posts and are used to push the wire pressing blocks on adjacent winding posts to move; A wire clamping component, disposed on the first sliding block close to the lower fixed plate, and used for winding the steel cord around the winding post of the lower fixed plate; The line-following component is arranged on the fixing seat and is used for assisting in measuring and taking out the steel cord of a fixed length.

[0009] Furthermore, the driving component includes: A sliding member is slidably connected in the adjacent winding column, and a second elastic member is installed between the two. The first sliding block is fixedly connected with a squeezing column, and the squeezing column is used to squeeze the adjacent sliding member to move; There are several sliding frames, which correspond to the wire pressing blocks on the adjacent winding posts one by one, and are all fixed to the sliding member, and the sliding frames are slidably connected to the adjacent wire pressing blocks; The auxiliary extrusion component is arranged on the adjacent winding pole and is used for assisting in extruding the movement of the adjacent sliding member.

[0010] Furthermore, the auxiliary extrusion component includes: A protruding block, slidably connected to the adjacent winding post; A spring telescopic rod is fixedly connected to the adjacent protruding block, the spring telescopic rod is slidably connected to the adjacent winding column, and the telescopic end of the spring telescopic rod is fixedly connected to a first extrusion block; The second extrusion block is fixedly connected to the adjacent sliding member, and the first extrusion block is used for extruding the adjacent second extrusion block to move.

[0011] Furthermore, the first extrusion block is provided with symmetrically distributed inclined surfaces. Both of the inclined surfaces on the first extrusion block are used to extrude the adjacent second extrusion blocks. The inclination degree of the inclined surface on the first extrusion block close to the adjacent wire pressing block in the vertical direction is less than that of the other inclined surface in the vertical direction. The elastic coefficient of the spring telescopic rod is greater than that of the sliding member.

[0012] Furthermore, an electric swing block is installed on the wire winding column. The electric swing block is used to further fix the steel cord wound on the wire winding column.

[0013] Furthermore, the wire clamping component includes: A fixed hook, fixedly connected to the first sliding block close to the lower fixed plate; An extrusion claw, slidably connected to the fixed hook, and a third elastic member is installed between the two. The extrusion claw and the fixed hook are used to automatically clamp the steel cord; An electromagnet, fixedly connected to the fixed seat. The electromagnet is used to fix the extrusion claw when powered on.

[0014] Furthermore, the wire guiding component includes: A second fixed slide rail, fixedly connected to the fixed seat; A second sliding block, slidably connected to the second fixed slide rail; An electric claw, fixedly connected to the second fixed slide rail.

[0015] The present invention has the following advantages: The present invention restricts the steel cord between two wire winding columns within a vertical line through the wire pressing block, thereby avoiding the situation that the steel cord slides horizontally along the wire winding column during the test, making the test process more rigorous, and thus obtaining more accurate and persuasive data for the steel cord breaking tensile test.

[0016] The present invention automatically completes the winding and clamping of both ends of the steel cord through the cooperation of the first fixed slide rail and the adjacent first sliding block, and automatically winds the steel cord around the adjacent wire winding columns, avoiding the influence of the wound steel cord on the steel cord in the test section, and further ensuring the accuracy of the test.

[0017] The present invention cooperates with the spring telescopic rod and the first extrusion block to jointly extrude the second extrusion block and the sliding member to move. At the same time, by winding the steel cord around the outside of the convex block, the spring telescopic rod provides the force for the wire pressing block to clamp the steel cord. While effectively clamping steel cords with different diameters, it avoids hard extrusion of the steel cord resulting in plastic deformation of the steel cord, ensuring the rigor of the test. Description of the Drawings

[0018] Figure 1Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the frame, hydraulic push rod and upper fixing plate of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the hydraulic push rod, upper fixing plate and fixed seat of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of part A in Figure 5 For the present invention Figure 3 Enlarged view of part B in Figure 6 Cross-sectional view of the upper fixing plate, winding column and sliding member of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the lower fixing plate, winding column and wire pressing block of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the extrusion column and quick gripper of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the fixed seat, lower fixing plate and second fixed slide rail of the present invention; Figure 10 Cross-sectional view of the lower fixing plate, winding column and sliding member of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the fixed seat, second fixed slide rail and second sliding block of the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the first fixed slide rail, first sliding block and fixed hook of the present invention; Figure 13 Schematic diagram of the three-dimensional structure of the fixed hook and extrusion claw of the present invention.

[0019] Meanings of the reference numerals in the figure: 1: frame, 2: hydraulic push rod, 3: upper fixing plate, 4: fixed seat, 5: lower fixing plate, 6: winding column, 7: wire pressing block, 71: arc-shaped groove, 8: rotating ring, 9: motor, 10: first fixed slide rail, 11: first sliding block, 111: extrusion column, 12: quick gripper, 13: sliding member, 14: sliding frame, 15: protruding block, 16: spring telescopic rod, 17: first extrusion block, 18: second extrusion block, 19: electric swing block, 20: fixed hook, 21: extrusion claw, 22: electromagnet, 23: second fixed slide rail, 24: second sliding block, 25: electric gripper. Detailed implementation manners

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] A device for detecting the breaking tensile force of extremely high-strength steel cord for vehicle tires, as Figures 1-7 shown, includes a frame 1, a hydraulic push rod 2 is installed on the frame 1, and a upper fixing plate 3 is fixedly connected to the telescopic end of the hydraulic push rod 2; a fixed seat 4, fixedly connected to the frame 1, a lower fixing plate 5 is fixedly connected to the fixed seat 4, and the lower fixing plate 5 is located below the upper fixing plate 3; winding columns 6, there are two symmetrically distributed, respectively fixedly connected to the upper fixing plate 3 and the lower fixing plate 5, and a plurality of wire pressing blocks 7 are slidably connected to the winding columns 6, and all the wire pressing blocks 7 are located in the same vertical plane; a winding mechanism, arranged on the upper fixing plate 3, for automatically winding the steel cord regularly around the two winding columns 6 and controlling the adjacent wire pressing blocks 7 to clamp the steel cord.

[0022] Furthermore, as Figures 4-7 shown, the wire pressing block 7 is provided with an arc surface, the winding column 6 is provided with a plurality of arc grooves 71, the arc grooves 71 on the winding column 6 correspond to the wire pressing blocks 7 on the winding column 6 one by one, and the arc surface of the wire pressing block 7 and the adjacent arc grooves 71 jointly clamp the steel cord.

[0023] Furthermore, as Figures 4-7 shown, the radian of the arc surface on the wire pressing block 7 is less than π / 2.

[0024] In the above solution, it aims to solve the problem that when the existing tensile force detection device conducts a breaking tensile test on the steel cord, the fixture is difficult to accurately clamp the steel cord, resulting in the influence on the test accuracy. A control terminal is arranged on the frame 1, and the winding mechanism is electrically connected to the control terminal; by restricting all the wire pressing blocks 7 to the same vertical plane, the range of the horizontal movement of the steel cord on the winding column 6 is restricted, ensuring that the steel cord will not move in the front and back directions during the stretching process. The two winding columns 6 can be symmetrically distributed up and down or centrosymmetrically distributed. When the two winding columns 6 are centrosymmetrically distributed, the position of the upper fixing plate 3 can be adjusted left and right relative to the telescopic end of the hydraulic push rod 2 (the staff adjusts the position of the upper fixing plate 3 according to the diameter of the steel cord before the experiment), ensuring that the steel cord is always in a completely vertical state during the stretching process (as Figure 2As shown, the steel cord between the right side of the upper winding post 6 and the left side of the lower winding post 6 is in a vertical state. In this solution, the two winding posts 6 are symmetrically distributed about the center, and two wire pressing blocks 7 are arranged on one winding post 6; the arc-shaped grooves 71 and the arc-shaped surfaces of the adjacent wire pressing blocks 7 are exactly the same in size and radian. By making the radian of the arc-shaped surface on the wire pressing block 7 less than π / 2, while ensuring that the wire pressing block 7 cooperates with the arc-shaped groove 71 to effectively clamp the steel cord, it is avoided that the steel cord is excessively bent and deformed, thus affecting the test results of the steel cord. At least one wire pressing block 7 is arranged on the right side of the upper part of the upper winding post 6, and at least one wire pressing block 7 is arranged on the left side of the lower part of the lower winding post 6 to further reduce the possibility of the steel cord sliding back and forth along the winding post 6 after being stressed.

[0025] The working process is as follows: When the staff is testing the steel cord, first, the position of the upper fixing plate 3 is adjusted according to the diameter of the steel cord. After the adjustment is completed, the staff installs the upper end of the steel cord on the winding mechanism. Subsequently, the staff pulls the steel cord to make the steel cord wind clockwise around the upper winding post 6 for one circle (viewed from front to back), so that the steel cord passes through the gaps between the two wire pressing blocks 7 and the adjacent arc-shaped grooves 71 on the upper winding post 6 in sequence. The staff pulls the steel cord out from the right side of the upper winding post 6 and gradually pulls the steel cord to the left side of the lower winding post 6, and controls the steel cord to wind counterclockwise around the lower winding post 6 for one circle (viewed from front to back), and it is also necessary to ensure that the steel cord passes through the gaps between the two wire pressing blocks 7 and the adjacent arc-shaped grooves 71 on the lower winding post 6 in sequence. Finally, the staff installs the lower end of the steel cord on the winding mechanism, and then completes the step of installing the steel cord.

[0026] After the staff installs the steel cord on this device, the staff controls the winding mechanism through the control terminal to continuously wind the upper end of the steel cord around the upper winding post 6. The winding mechanism makes the wire pressing block 7 on the upper winding post 6 slide into the adjacent winding post 6. The wire pressing block 7 cooperates with the adjacent arc-shaped groove 71 to clamp the steel cord. Subsequently, the control terminal controls the telescopic end of the hydraulic push rod 2 to drive the upper fixing plate 3 and the upper winding post 6 to move upward together. The lower end of the steel cord slides on the lower winding post 6 and the winding mechanism until the length of the steel cord between the two winding posts 6 reaches a certain value (this value is determined by the standard of the breaking tensile force test and is used to conveniently compare the tensile strength of different steel cords. For example: this value is set to 100 mm or 200 mm). The staff controls the hydraulic push rod 2 to stop working. At this time, the lower end of the steel cord stops moving. The staff controls the winding mechanism through the control terminal to wind the lower end of the steel cord around the lower winding post 6. The winding mechanism controls the wire pressing block 7 on the lower winding post 6 to slide into the adjacent winding post 6, so that the wire pressing block 7 cooperates with the adjacent arc-shaped groove 71 to clamp the steel cord. At this time, the steel cord is in a completely vertical state limited by the wire pressing blocks 7 on the upper and lower sides, ensuring the accuracy of the test data.

[0027] After both ends of the steel cord are clamped, the staff controls the telescopic end of the hydraulic push rod 2 to continue to move upward, and the control terminal records the magnitude of the tension applied by the telescopic end of the hydraulic push rod 2 and the distance the telescopic end of the hydraulic push rod 2 moves upward through the existing tension sensor until the steel cord is broken under the action of the tension. The staff turns off the hydraulic push rod 2 and records the data on the control terminal. Finally, the staff controls the winding mechanism to work in reverse through the control terminal, and removes the upper and lower ends of the steel cord from the two winding poles 6 respectively, and continues to test other steel cords.

[0028] Furthermore, if Figures 4-10 As shown, the winding mechanism includes: a rotating ring 8, which has two parts and is rotatably connected to the upper fixed plate 3 and the lower fixed plate 5 respectively, the rotating ring 8 is coaxial with the adjacent winding pole 6, and the upper fixed plate 3 and the lower fixed plate 5 are both equipped with a motor 9, and the output shaft of the motor 9 is transmitted to the adjacent rotating ring 8 through a gear set; a first fixed slide rail 10, which has two parts and is respectively fixed to the adjacent rotating ring 8, the first fixed slide rail 10 is slidably connected with a first sliding block 11, and a first elastic member is installed between the two, and a quick clamp 12 is installed on the first sliding block 11 close to the upper fixed plate 3; a driving component, which has two parts and is respectively arranged in the adjacent winding pole 6, for pushing the wire pressing block 7 on the adjacent winding pole 6 to move; a wire clamping component, which is arranged on the first sliding block 11 close to the lower fixed plate 5, for winding the steel cord around the winding pole 6 of the lower fixed plate 5; a wire following component, which is arranged on the fixed seat 4, for assisting in measuring and taking out a fixed length of steel cord.

[0029] In the above scheme, the motor 9, the wire clamping component and the wire following component are all electrically connected to the control terminal, the quick clamping jaw 12 and the wire clamping component are respectively used to clamp the two ends of the steel cord, and the quick clamping jaw 12 and the wire clamping component are respectively located on the rear side of the adjacent winding pole 6. By making the winding pole 6 coaxial with the rotating ring 8, when the rotating ring 8 drives the first fixed slide rail 10 and the first sliding block 11 to rotate, it is convenient for the first sliding block 11 to drive the quick clamping jaw 12 or the wire clamping component thereon to rotate, and rotate the steel cord along the adjacent winding pole 6, and then wind the steel cord around the winding pole 6. The quick clamping jaw 12 is an existing unpowered device, and the staff manually operates the quick clamping jaw 12 to clamp the upper end of the steel cord, and the wire clamping component is used to clamp the lower end of the steel cord. The first elastic member on the first sliding block 11 is a tension spring.

[0030] The working process is as follows: in the above-mentioned process of installing the steel cord, when the staff clamps the upper end of the steel cord through the winding mechanism, the staff clamps the upper end of the steel cord on the quick clamp 12 by manually operating the quick clamp 12, and when the staff clamps the lower end of the steel cord through the winding mechanism, the staff first controls the steel cord to pass through the clamping component, and then fixes the steel cord on the line-following component.

[0031] After the staff installs the steel cord, when the staff needs to wind and fix the steel cord on the upper winding post 6, the staff controls the upper motor 9 to work through the control terminal. The upper motor 9 drives the rotating ring 8 to rotate through the gear set. The rotating ring 8 drives the first fixed slide rail 10, the first sliding block 11 and the quick gripper 12 to rotate. The quick gripper 12 drives the upper end of the steel cord to rotate, and the upper end of the steel cord gradually winds around the rear side of the upper winding post 6. The first sliding block 11 is gradually dragged by the steel cord and moves towards the adjacent rotating ring 8. The first elastic member on the first sliding block 11 stretches and stores energy. When the first sliding block 11 moves to a position close to the rotating ring 8, the first sliding block 11 controls the upper driving component to work. The upper driving component controls the adjacent wire pressing block 7 to retract into the upper winding post 6. The wire pressing block 7 on the upper winding post 6 clamps the steel cord. Subsequently, the upper first sliding block 11 moves to the end of the stroke, and the control terminal turns off the upper motor 9, and the steel cord is fixed on the upper winding post 6.

[0032] When the staff controls the telescopic end of the hydraulic push rod 2 to drive the upper fixing plate 3 to move upward to prepare to pull out a certain length of the steel cord, during the process of the steel cord moving upward following the upper fixing plate 3, since the steel cord is not fixed by the wire clamping component, the steel cord slides upward along the wire clamping component and the lower winding post 6, and the steel cord simultaneously pulls the wire guiding component to move upward together. During this process, the tensile force received by the steel cord will not cause it to deform. When the staff pulls out the steel cord to the specified length and needs to wind the steel cord on the lower winding post 6, the staff controls the wire clamping component to clamp the steel cord inside it through the control terminal, and controls the wire guiding component to release the fixation of the lower end of the steel cord. Subsequently, the staff controls the lower motor 9 to work through the control terminal. The lower motor 9 drives the lower rotating ring 8, the first fixed slide rail 10, the first sliding block 11 and the wire clamping component to rotate through the same principle as above until the steel cord winds and is fixed on the rear part of the lower winding post 6. The lower first sliding block 11 works by driving the lower driving component to make the wire pressing block 7 on the lower winding post 6 clamp the lower end of the steel cord to fix the lower end of the steel cord.

[0033] When the breaking tensile test is over, the staff controls the wire clamping component and the two motors 9 to work through the control terminal. The two motors 9 drive the two rotating rings 8 to rotate in the reverse direction respectively to release the winding of the steel cord on the adjacent winding posts 6. The first sliding block 11 moves back to its original position under the pulling force of the adjacent first elastic member.

[0034] Further, as Figures 4-7As shown in the figure, the driving component includes: a sliding member 13, which is slidably connected inside the adjacent wire winding column 6, and a second elastic member is installed between the two. A pressing column 111 is fixedly connected to the first sliding block 11, and the pressing column 111 is used to press the adjacent sliding member 13 to move; there are several sliding frames 14, which correspond one by one to the wire pressing blocks 7 on the adjacent wire winding columns 6, and are fixedly connected to the sliding member 13. The sliding frame 14 is slidably connected to the adjacent wire pressing block 7; an auxiliary pressing component is arranged on the adjacent wire winding column 6 and is used to assist in pressing the adjacent sliding member 13 to move.

[0035] Furthermore, as Figures 4-7 shown, the auxiliary pressing component includes: a convex block 15, which is slidably connected to the adjacent wire winding column 6; a spring telescopic rod 16, which is fixedly connected to the adjacent convex block 15. The spring telescopic rod 16 is slidably connected to the adjacent wire winding column 6, and the telescopic end of the spring telescopic rod 16 is fixedly connected to a first pressing block 17; a second pressing block 18 is fixedly connected to the adjacent sliding member 13, and the first pressing block 17 is used to press the adjacent second pressing block 18 to move.

[0036] Furthermore, as Figure 7 shown, the first pressing block 17 is provided with symmetrically distributed inclined surfaces. Both inclined surfaces on the first pressing block 17 are used to press the adjacent second pressing block 18. The inclination degree of the inclined surface on the first pressing block 17 close to the adjacent wire pressing block 7 in the vertical direction is less than that of the other inclined surface in the vertical direction. The elastic coefficient of the spring telescopic rod 16 is greater than the elastic coefficient of the sliding member 13.

[0037] Furthermore, as Figures 2-5 shown, the wire winding column 6 is equipped with an electric swing block 19, and the electric swing block 19 is used to further fix the steel cord wound on the wire winding column 6.

[0038] In the above solution, the electric swing block 19 is electrically connected to the control terminal. An inclined groove is provided on the sliding frame 14. The inclined groove on the sliding frame 14 gradually inclines away from the axis of the adjacent wire winding column 6 from the back to the front. When the pressing column 111 presses the sliding member 13, the sliding member 13 is pressed by the pressing column 111 and moves forward. At this time, during the forward movement of the sliding member 13 following the sliding member 13, the adjacent wire pressing block 7 is driven to move toward the side close to the wire winding column 6. The initial positions of the wire pressing block 7 and the sliding member 13 are as Figure 4 and Figure 5As shown in the figure; the second elastic member on the sliding member 13 is a spring. The two inclined surfaces on the first extrusion block 17 are respectively located on its front and rear sides. The second extrusion block 18 passes through the first extrusion block 17 by extruding the inclined surface on the rear side of the first extrusion block 17. The inclined surface on the front side of the first extrusion block 17 is used to extrude the adjacent second extrusion block 18 to move forward. The inclination degree of the inclined surface on the front side of the first extrusion block 17 in the vertical direction is less than that of the inclined surface on the rear side of the first extrusion block 17 in the vertical direction. When the second extrusion block 18 is located on the front side of the first extrusion block 17, the inclined surface on the front side of the first extrusion block 17 extrudes the second extrusion block 18 to move forward. The first extrusion block 17 provides a forward extrusion force to the sliding member 13, so that the sliding member 13 drives the sliding frame 14 and the wire pressing block 7 to clamp the steel cord, ensuring that the wire pressing block 7 can effectively clamp steel cords of any diameter. The electric swing block 19 is a clamp controlled by an electric rotating shaft. The electric rotating shaft drives the clamp to rotate towards the adjacent winding column 6, so as to clamp the steel cord wound outside the winding column 6; the elastic force of the spring telescopic rod 16 is greater than the elastic force of the second elastic member on the sliding member 13.

[0039] The working process is as follows: When the staff controls the motor 9 to work through the control terminal, and the motor 9 drives the adjacent rotating ring 8 to rotate through the gear set. Taking the upper winding column 6 and its adjacent parts as an example, when the first sliding block 11 approaches the rotating ring 8, the extrusion column 111 on the first sliding block 11 gradually contacts the sliding member 13. Subsequently, the extrusion column 111 extrudes the sliding member 13 to move forward during the movement, and the second elastic member on the sliding member 13 is compressed to store energy. During the movement of the sliding member 13, it drives the adjacent wire pressing block 7 to move together through the sliding frame 14 on it. The wire pressing block 7 moves towards the axis of the winding column 6, and the wire pressing block 7 cooperates with the arc-shaped groove 71 to gradually clamp the steel cord. During the movement of the sliding member 13, it drives the second extrusion block 18 to extrude the first extrusion block 17, and the first extrusion block 17 extrudes the convex block 15 upward through the spring telescopic rod 16. At this time, the rotating ring 8 drives the first fixed slide rail 10 and the first sliding block 11 to rotate, so that the steel cord is gradually wound around the rear part of the adjacent winding column 6 (i.e., the outside of the convex block 15). The convex block 15 is limited by the steel cord and cannot move upward. At this time, the spring telescopic rod 16 is compressed to store energy. When the second extrusion block 18 moves to the rear side of the first extrusion block 17, the first extrusion block 17 returns downward under the elastic force of the spring telescopic rod 16. The first extrusion block 17 extrudes the adjacent sliding member 13 to move forward through the inclined surface on its front side. The sliding member 13 is separated from the extrusion column 111, and the sliding member 13 completely clamps the steel cord through the sliding frame 14 and the adjacent wire pressing block 7. At this time, the spring telescopic rod 16 is not fully extended, and the elastic force on the spring telescopic rod 16 is not fully released. The sliding member 13 stops moving forward. After the first sliding block 11 winds the steel cord tightly, the first sliding block 11 and the extrusion column 111 stop rotating together. The control terminal turns off the motor 9 and controls the electric swing block 19 to work. The electric swing block 19 extrudes and fixes the steel cord on the adjacent winding column 6.

[0040] When the test is over and the staff needs to loosen the steel cord, the staff first opens the electric pendulum block 19 through the control terminal to release the fixation of the steel cord by the electric pendulum block 19. The staff then controls the motor 9 through the control terminal to drive the rotating ring 8 to reverse, and gradually releases the state of the steel cord being wound on the winding pole 6. At this time, the steel cord releases the limit on the protruding block 15, and the protruding block 15 pops up upward under the elastic force of the spring telescopic rod 16. At this time, the elastic force of the spring telescopic rod 16 is completely released, so the sliding member 13 moves backward and resets under the elastic force of the second elastic member thereon. During the resetting process of the sliding member 13, the sliding member 13 squeezes the first extrusion block 17, the spring telescopic rod 16 and the protruding block 15 upward through the second extrusion block 18, and then the second extrusion block 18 moves back to the rear side of the first extrusion block 17. When the sliding member 13 is reset, it drives the adjacent wire pressing block 7 to move and reset through the sliding frame 14.

[0041] Furthermore, if Figure 9 and Figures 11-13 As shown, the wire clamping component includes: a fixed hook 20, fixedly connected to the first sliding block 11 close to the lower fixed plate 5; a squeezing claw 21, slidably connected to the fixed hook 20, and a third elastic member is installed between the two, and the squeezing claw 21 and the fixed hook 20 are used to automatically clamp the steel cord; an electromagnet 22, fixedly connected to the fixing seat 4, and the electromagnet 22 is used to fix the squeezing claw 21 when power is turned on.

[0042] Furthermore, if Figure 9 and Figure 11 As shown, the linear components include: a second fixed slide rail 23 fixed to the fixed seat 4; a second sliding block 24 slidably connected to the second fixed slide rail 23; and an electric clamp 25 fixed to the second fixed slide rail 23.

[0043] In the above scheme, the opening direction of the fixing hook 20 is located at the side away from the electric clamp 25, so that when the steel cord slides on the fixing hook 20, the steel cord will not be out of contact with the fixing hook 20. The third elastic member on the fixing hook 20 is a spring. The initial state of the third elastic member on the fixing hook 20 is as follows: Figure 11 and Figure 12 As shown, it is in a compressed force storage state, and the elastic force of the third elastic member on the fixed hook 20 is smaller than the magnetic attraction between the electromagnet 22 and the extrusion claw 21, the electric clamp 25 is an existing device, the electromagnet 22 and the electric clamp 25 are both electrically connected to the control terminal, and the initial position of the second sliding block 24 is located at the lower side of the second fixed slide rail 23.

[0044] The working process is as follows: When the staff winds the steel cord around the rear side of the lower winding post 6 during the initial installation of the steel cord, the electromagnet 22 is first started through the control terminal. The staff passes the steel cord through the fixed hook 20, and then clamps the steel cord on the electric gripper 25. The staff controls the electric gripper 25 to clamp the end of the steel cord through the control terminal, completing the fixation of the lower end of the steel cord. Subsequently, the staff drags the steel cord upward until the length of the steel cord reaches the length required for the experiment. During the upward movement of the steel cord, the steel cord is not clamped by the fixed hook 20 and the pressing claw 21 and slides upward relative to the fixed hook 20. The steel cord simultaneously drags the electric gripper 25 and the second sliding block 24 to slide upward along the second fixed slide rail 23. The electric gripper 25 and the second sliding block 24 ensure that the steel cord always remains in a straightened state by their own weights. When the staff measures the length of the steel cord and is ready to fix the lower end of the steel cord, the staff first turns off the electromagnet 22 through the control terminal. The magnetic force of the electromagnet 22 disappears, and the pressing claw 21 moves leftward under the elastic force of its third elastic member and cooperates with the fixed hook 20 to clamp the steel cord therein. Subsequently, the staff controls the electric gripper 25 to open through the control terminal. The electric gripper 25 and the second sliding block 24 reset downward under the action of gravity. The staff starts the lower motor 9 through the control terminal. The lower motor 9 drives the lower first sliding block 11, the fixed hook 20, and the pressing claw 21 to rotate through the above principle, so that the steel cord is wound and fixed on the rear part of the lower winding post 6. Through the cooperation of the fixed hook 20 and the electric gripper 25, the steel cord is automatically dragged to the required length, thereby maintaining the accuracy of the experiment and reducing the operation burden of the staff.

[0045] When the staff needs to loosen the steel cord, the motor 9 is first controlled through the control terminal to drive the first sliding block 11, the fixed hook 20, and the pressing claw 21 to reverse, so that the steel cord is no longer wound around the rear part of the lower winding post 6. The lower first sliding block 11 resets under the elastic force of its first elastic member. Subsequently, the control terminal controls the lower motor 9 to work through the control terminal. The lower motor 9 drives the lower first fixed slide rail 10 to rotate and reset to the upper side of the electromagnet 22. The control terminal magnetizes the electromagnet 22, and the electromagnet 22 attracts the pressing claw 21 to move rightward again through magnetic force. The pressing claw 21 moves and resets and recompresses its third elastic member. At this time, the staff removes the steel cord from the fixed hook 20.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A device for detecting the breaking force of an extremely high-strength steel cord for a passenger car tire, characterized in that it comprises: A frame (1), wherein a hydraulic push rod (2) is mounted on the frame (1), and an upper fixing plate (3) is fixedly connected to the telescopic end of the hydraulic push rod (2); A fixing seat (4) is fixedly connected to the frame (1), a lower fixing plate (5) is fixedly connected to the fixing seat (4), and the lower fixing plate (5) is located below the upper fixing plate (3); The winding posts (6) have two symmetrically distributed ones, which are respectively fixed to the upper fixing plate (3) and the lower fixing plate (5); a plurality of wire pressing blocks (7) are slidably connected to the winding posts (6); and all the wire pressing blocks (7) are located in the same vertical plane; The winding mechanism is arranged on the upper fixing plate (3) and is used for automatically winding the steel cord regularly around the two winding poles (6) and controlling the adjacent wire pressing blocks (7) to clamp the steel cord.

2. The ultra-high strength steel cord breaking force detection device for passenger car tires according to claim 1, characterized in that: The wire pressing block (7) is provided with an arcuate surface, and the winding post (6) is provided with a plurality of arcuate grooves (71). The arcuate grooves (71) on the winding post (6) correspond one to one with the wire pressing block (7) on the winding post (6), and the arcuate surface of the wire pressing block (7) and the adjacent arcuate grooves (71) jointly clamp the steel cord.

3. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 2, characterized in that: The curvature of the arc-shaped surface on the wire pressing block (7) is less than π / 2.

4. The ultra-high strength steel cord breaking force detection device for passenger car tires according to claim 2, characterized in that: The winding mechanism comprises: There are two rotating rings (8), which are rotatably connected to the upper fixed plate (3) and the lower fixed plate (5), respectively. The rotating ring (8) is coaxial with the adjacent winding pole (6). The upper fixed plate (3) and the lower fixed plate (5) are both equipped with a motor (9). The output shaft of the motor (9) is driven by the adjacent rotating ring (8) through a gear set. The first fixed slide rails (10) have two parts, each of which is fixedly connected to the adjacent rotating rings (8); the first fixed slide rails (10) are slidably connected to a first sliding block (11), and a first elastic member is installed between the first fixed slide rails (10); a quick clamp (12) is installed on the first sliding block (11) close to the upper fixed plate (3); Two driving components are provided, respectively disposed in adjacent winding posts (6), and used for pushing the wire pressing blocks (7) on adjacent winding posts (6) to move; a wire clamping component, arranged on the first sliding block (11) close to the lower fixing plate (5), and used for winding the steel cord around the winding post (6) of the lower fixing plate (5); The wire following component is arranged on the fixing seat (4) and is used to assist in measuring and taking out a steel cord of a fixed length.

5. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 4, characterized in that: The driving component comprises: The sliding member (13) is slidably connected in the adjacent winding pole (6), and a second elastic member is installed between the two. The first sliding block (11) is fixedly connected to a squeezing column (111), and the squeezing column (111) is used to squeeze the adjacent sliding member (13) to move; A plurality of sliding frames (14) corresponding one to one with the wire pressing blocks (7) on the adjacent winding posts (6), all of which are fixed to the sliding member (13), and the sliding frames (14) are slidably connected to the adjacent wire pressing blocks (7); An auxiliary extrusion component is arranged on an adjacent winding post (6) and is used to assist in extruding the adjacent sliding member (13) to move.

6. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 5, characterized in that: The auxiliary extrusion component comprises: A protruding block (15) slidably connected to an adjacent winding post (6); A spring telescopic rod (16) is fixedly connected to the adjacent protruding block (15), the spring telescopic rod (16) is slidably connected to the adjacent winding column (6), and the telescopic end of the spring telescopic rod (16) is fixedly connected to a first extrusion block (17); The second extrusion block (18) is fixedly connected to the adjacent sliding member (13), and the first extrusion block (17) is used to squeeze the adjacent second extrusion block (18) to move.

7. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 6, wherein: The first extrusion block (17) is provided with symmetrically distributed inclined surfaces, the two inclined surfaces on the first extrusion block (17) are both used to extrude the adjacent second extrusion block (18), the degree of inclination of the inclined surface on the first extrusion block (17) close to the adjacent wire pressing block (7) in the vertical direction is smaller than the degree of inclination of the other inclined surface in the vertical direction, and the elastic coefficient of the spring telescopic rod (16) is greater than the elastic coefficient of the sliding member (13).

8. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 6, wherein: The winding pole (6) is equipped with an electric swing block (19), and the electric swing block (19) is used to further fix the steel cord wound on the winding pole (6).

9. The device for detecting the breaking force of an ultra-high strength steel cord for a vehicle tire according to claim 4, wherein: The clamping component comprises: A fixing hook (20) fixedly connected to the first sliding block (11) close to the lower fixing plate (5); A squeezing claw (21) is slidably connected to the fixing hook (20), and a third elastic member is installed between the two, and the squeezing claw (21) and the fixing hook (20) are used to automatically clamp the steel cord; An electromagnet (22) is fixedly connected to the fixing seat (4), and the electromagnet (22) is used to fix the squeezing claw (21) when power is supplied.

10. The device for detecting the breaking force of an ultra-high strength steel cord for a passenger vehicle tire according to claim 9, wherein: The in-line components include: A second fixed slide rail (23) fixedly connected to the fixed seat (4); A second sliding block (24) slidably connected to the second fixed sliding rail (23); The electric clamp (25) is fixedly connected to the second fixed slide rail (23).

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