Tensile property detection device and method for cable processing

Abstract

The invention discloses a tensile property detection device and method for cable processing, and relates to the technical field of performance detection.The tensile property detection device comprises a tensile testing machine, two mounting seats which are distributed up and down are fixedly mounted on the tensile testing machine, wire winding frames are mounted in the mounting seats, and each wire winding frame comprises a fixed mounting seat, a winding rod and a clamping mounting seat; the fixed mounting seat is located on one side of the clamping mounting seat, the rolling rod is fixedly connected between the fixed mounting seat and the rolling rod, a fixing mechanism is mounted in the fixed mounting seat, and a clamping mechanism is mounted in the clamping mounting seat; the cable is wound on the winding rod on the winding frame by two or more layers, mutual friction limitation is achieved through the contact faces between the outer surfaces of the cable winding parts for fixing, the cable is clamped and fixed through a larger stress face, the problem that the cable is broken at the stress point position of the clamping and fixing position is solved, and the cable winding efficiency is improved. And the final tensile property detection data of the cable is more accurate.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of performance detection, in particular to a tensile property detection device and method for cable processing. BACKGROUND

[0002] The tensile property of a cable can be detected through a tensile test, and a commonly used device is a tensile testing machine, also known as a tension testing machine. When detecting the tensile property of a cable through a tensile testing machine, two parts of the cable need to be clamped and fixed first, and then the part between the clamped and fixed parts of the cable is mainly detected during stretching. Through retrieval, a tensile property detection device and method for cable processing are disclosed in Chinese Patent No. CN118464633A, and the application relates to the technical field of tensile property detection. The tensile property detection device and method for cable processing comprise a tensile testing machine group for detecting the tensile property of a cable, a control machine group electrically connected to the tensile testing machine group for displaying detection results and controlling a detection process, a clamping assembly arranged below the fixed plate for clamping a cable body, and a clamping plate fixed to one end of a fixed column for clamping the cable body, wherein a rubber sheet is fixed in the clamping plate, and one side of the rubber sheet abuts against the cable body. Through observation of the disclosed document, it is found that when clamping and fixing the cable, the rubber sheet is attached to the outer wall of the cable to realize contact between the large contact surface and the outer surface of the cable, and the pressure source of the rubber sheet is provided by air pump air in the closed clamping plate to push the rubber sheet against the cable through high-pressure air pressure. However, air itself has good compressibility, and when the tensile force of the cable is too large, the high-pressure gas in the clamping plate cannot effectively apply pressure to the rubber sheet to maintain high friction to cooperate with the clamping plate to clamp and fix the cable. Therefore, the application provides a tensile property detection device and method for cable processing to solve the above problems. SUMMARY

[0003] The application provides a tensile property detection device and method for cable processing to solve the above technical problems.

[0004] To solve the above technical problems, the application provides a tensile property detection device and method for cable processing, which comprises a tensile testing machine, wherein two installation seats are fixedly installed on the tensile testing machine in an up-down distribution, and a winding frame is installed in the installation seat. The winding frame comprises a fixed installation seat, a winding rod and a clamping installation seat, the fixed installation seat is located on one side of the clamping installation seat, and the winding rod is fixedly connected between the fixed installation seat and the winding rod. The fixed installation seat is internally provided with a fixing mechanism, and the clamping installation seat is internally provided with a clamping mechanism.

[0005] Preferably, the winding frame further comprises two connecting rods, the two connecting rods are fixedly connected to the sides of the fixed mounting seat and the clamping mounting seat away from each other respectively, and a I-shaped block is fixedly connected to the end of each connecting rod. The mounting seat is provided with a sliding groove on both sides, and the I-shaped block penetrates the sliding groove.

[0006] Preferably, a spring sleeve block one is fixedly connected to the top of the connecting rod, a spring sleeve block two is installed above the spring sleeve block one, a spring is installed between the spring sleeve block one and the spring sleeve block two, and the spring sleeve block two is fixedly connected to the inner side wall of the mounting seat.

[0007] Preferably, a cable groove is formed on the side of the top of the fixed mounting seat close to the winding rod, a cable pipe is fixedly connected in the fixed mounting seat, the cable pipe is in communication with the inside of the cable groove and the bottom of the fixed mounting seat respectively, and openings are formed on both sides of the cable pipe.

[0008] Preferably, the fixing mechanism comprises two left and right distributed rectangular frames, the cable pipe is located between the two rectangular frames, a special-shaped wheel is movably connected to the inside of the rectangular frame through a torsion spring shaft, the special-shaped wheel penetrates the opening and extends into the inside of the cable pipe, two front and rear distributed guide plates are fixedly connected in the fixed mounting seat, the cable pipe is located between the two guide plates, the guide plates penetrate the two rectangular frames, and the rectangular frame and the guide plate are in sliding connection.

[0009] Preferably, a rubber sleeve is inlaid and fixed at the outer end of the special-shaped wheel, and protruding particles are processed on the outer surface of the rubber sleeve.

[0010] Preferably, one electric push rod is fixedly connected to each side in the inside of the fixed mounting seat, a connecting plate is fixedly connected to the inside of the rectangular frame, the connecting plate is located on the side of the special-shaped wheel away from the cable pipe, a connecting block is fixedly connected to the end of the piston rod of the electric push rod, and the connecting block penetrates the connecting plate.

[0011] Preferably, one insertion slot is formed on the top and the bottom of the clamping mounting seat respectively, a gear cavity is formed in the inside of the clamping mounting seat, and the insertion slot and the gear cavity are in communication.

[0012] Preferably, the clamping mechanism comprises two upper and lower distribution pressing plates, the roll rod is located between the two pressing plates, rubber blocks are fixedly connected to the inner sides of the pressing plates, L-shaped connecting arms are inserted into one side of the pressing plates, the two L-shaped connecting arms extend into the two insertion slots respectively, the part of the L-shaped connecting arms located in the insertion slots is fixedly connected with a first gear rack on the side wall, a shaft rod is movably connected through the front side of the clamping mounting seat, two second gears are fixedly connected to the outer end of the shaft rod, the second gears are located in the gear cavity, the two first gear racks are movably connected on the left and right sides of the two second gears respectively, second gear racks are movably connected on one side of the second gears, and the two second gear racks are fixedly connected to the front and rear sides of the mounting seat.

[0013] The application also provides a detection method suitable for the tensile resistance performance detection device for cable processing. S1, one end of the cable is inserted into the cable pipe, then passes through the cable groove and is wound on the outer end of the roll rod, and the two ends of the cable are preliminarily fixed by the two; S2, the two rectangular frames are pushed to each other by the two electric push rods, and the special-shaped wheels in the rectangular frames pass through the opening and abut against the cable during the process; S3, when the tensile testing machine is started to stretch the cable, the cable wound on the roll rod is tightly wound on the roll rod by the friction between the outer walls of the cable wound and contacted with each other, and when the cable has a tendency to be pulled out of the cable pipe, the cable rotates relative to the inner side of the two special-shaped wheels by the friction between the cable and the rubber sleeve on the special-shaped wheel, and the clamping force on the cable becomes tighter and tighter with the continuous relative rotation of the two special-shaped wheels; S4, as the cable is continuously stretched, the two mounting seats move away from each other, and the cable pulls the winding frame to move a small distance in the sliding groove range during the process, and during the process, the clamping mechanism moves synchronously with the clamping mounting seat, the second gears on the shaft rod also mesh and rotate on the second gear racks, so that the shaft rod and the two first gears on the shaft rod rotate, the two L-shaped connecting arms move closer to each other by the meshing of the two first gear racks on the L-shaped connecting arms during the rotation of the two first gears, and then the two pressing plates move closer to each other, and finally the rubber blocks on the inner sides of the pressing plates press the outer end of the cable wound on the roll rod more and more tightly, further improving the friction of the cable when it is wound; S5, as the two mounting seats continuously move away from each other, the cable fixed at both ends of the two winding frames is continuously stretched and finally breaks, and the tensile performance data of the cable is finally measured.

[0014] Compared with the related art, the tensile resistance performance detection device and method for cable processing provided by the application has the following beneficial effects: 1. By winding the cable around the reel on the reel frame and winding it in two or more layers, the friction between the outer surfaces of the cable winding parts is limited and fixed through the contact surface. The cable is clamped and fixed with a larger force surface, avoiding the problem of cable breakage at the force point of the clamping and fixing, making the final tensile performance test data of the cable more accurate; 2. The cable end is clamped and fixed inside the fixed mounting seat through a fixing mechanism. As the cable stretches, the fixing mechanism can automatically increase the clamping force on the cable end, thereby ensuring that the cable end will not fall off when it is wound on the reel for fixing, further improving the cable clamping stability; 3. When the cable is fixed and operated by the reel, the reel will be pulled by the cable and move a small distance inside the mounting base. During this period, the clamping mechanism will gradually clamp the cable wound on the reel through the pressure plate and rubber block as the reel moves. The clamping mechanism will increase the clamping pressure on the cable as the force of the cable being stretched increases, further improving the firmness of the cable wound on the reel. It still serves as a large force-bearing surface, avoiding local damage to the cable and causing breakage at the damaged part, which affects the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 3 This is a schematic diagram of the internal cross-sectional structure of the mounting base of the present invention; Figure 4 It is a schematic diagram of the winding frame structure of the present invention; Figure 5 This is a schematic cross-sectional view of the fixed mounting base of the present invention; Figure 6 This is a schematic cross-sectional view of the clamping mounting seat of the present invention; Figure 7 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 8 Schematic diagram of the local structure of the fixing mechanism of the present invention Figure 1 ; Figure 9 Schematic diagram of the local structure of the fixing mechanism of the present invention Figure 2 ; Figure 10 It is a schematic structural diagram of the clamping mechanism of the present invention; Figure 11 It is a schematic diagram of the partial structure of the clamping mechanism of the present invention.

[0016] The figure label: 1, tensile testing machine, 2, mounting seat, 21, sliding slot, 3, winding frame, 31, fixed mounting seat, 311, cable slot, 312, cable tube, 313, opening, 32, winding rod, 33, clamping mounting seat, 331, slot, 332, gear cavity, 34, connecting rod, 35, I-shaped block, 36, spring sleeve block one, 37, spring, 38, spring sleeve block two, 4, fixing mechanism, 41, rectangular frame, 42, special-shaped wheel, 43, rubber sleeve, 44, connecting plate, 45, electric push rod, 46, connecting block, 47, guide plate, 5, clamping mechanism, 51, pressing plate, 52, rubber block, 53, L-shaped connecting arm, 54, rack one, 55, shaft rod, 56, gear one, 57, gear two, 58, rack two. DETAILED DESCRIPTION

[0017] Please refer to Figures 1-11 The technical scheme provided by the present application specifically includes the following embodiments: Embodiment one: a tensile property detection device for cable processing, comprising a tensile testing machine 1, two upper and lower mounting seats 2 are fixedly installed on the tensile testing machine 1, the two mounting seats 2 are respectively installed on the base of the fixed position of the tensile testing machine 1 and the cross beam for lifting the detection of tensile property, and a winding frame 3 is installed in the mounting seat 2; The winding frame 3 comprises a fixed mounting seat 31, a winding rod 32 and a clamping mounting seat 33, the fixed mounting seat 31 is located on one side of the clamping mounting seat 33, and the winding rod 32 is fixedly connected between the fixed mounting seat 31 and the winding rod 32. The fixed mounting seat 31 is internally provided with a fixing mechanism 4, and the clamping mounting seat 33 is internally provided with a clamping mechanism 5.

[0018] The winding frame 3 further comprises two connecting rods 34, the two connecting rods 34 are respectively fixedly connected to the sides away from each other of the fixed mounting seat 31 and the clamping mounting seat 33, the connecting rod 34 is fixedly connected with an I-shaped block 35 at the end, the mounting seat 2 is provided with a sliding slot 21 on both sides, the I-shaped block 35 penetrates through the sliding slot 21, when the cable is wound and fixed on the winding frame 3, the winding frame 3 moves a small distance in the mounting seat under the pulling of the cable, when the winding frame 3 moves, the moving stroke is the moving path of the I-shaped block 35 in the sliding slot 21, the I-shaped block 35 penetrates through the sliding slot 21 in the middle narrow place, when the winding frame 3 moves, the I-shaped block 35 can only slide up and down in the sliding slot 21, and the winding frame 3 cannot rotate itself, and the maximum displacement of the winding frame 3 is that the winding frame 3 moves from the bottom to the top of the sliding slot 21, which avoids the winding frame 3 from being separated from the mounting seat 2 due to excessive displacement, and also avoids the problem that the clamping force of the clamping mechanism 5 is too large, causing damage to the clamping mechanism 5 itself or crushing the cable.

[0019] When the cable is wound on the winding rod 32, it is wound from the part close to the fixed mounting seat 31, and when it is wound to the part close to the clamping mounting seat 33, the second layer is started to be wound and wound back, and finally wound to two or more layers, so that when the cable is tensioned, the cable winding part can be fixed by the friction between the outer walls of the cable, and when the cable is tensioned, the cable winding part is gradually compacted, so that the contact area between the outer walls of the cable is further increased, and as the extrusion force between the cables increases, the cable will be wound more tightly, so that the cable can be fixed with a large force surface and more and more tightly, avoiding the problem that the small force surface causes the cable to break at the force point position and affects the accuracy of the tensile property detection data.

[0020] The connecting rod 34 is fixedly connected with a spring sleeve block one 36 at the top, a spring sleeve block two 38 is installed above the spring sleeve block one 36, and a spring 37 is installed between the spring sleeve block one 36 and the spring sleeve block two 38. The spring sleeve block two 38 is fixedly connected to the inner side wall of the mounting seat 2.

[0021] The spring sleeve block one 36 and the spring sleeve block two 38 are both machined with a groove on the side close to each other, and the two ends of the spring 37 are respectively inserted into the two grooves, so that the spring 37 between the spring sleeve block one 36 and the spring sleeve block two 38 will not fall off at will, and at the same time, this installation method is also convenient for replacement and maintenance of the spring 37. It is worth mentioning that when the cable is not stretched and tightened, the spring force of the spring 37 will always push the winding reel 3 so that it will not move, and when the cable is stretched, the winding reel 3 is moved by the pulling of the cable, and during this period, the spring 37 will be further compressed to generate a spring force. When the detection is finished, the winding reel 3 is no longer pulled, and the spring force of the spring 37 will push the winding reel 3 back to the original position.

[0022] The fixed mounting seat 31 is provided with a cable groove 311 on the side close to the winding rod 32 at the top, and a cable pipe 312 is fixedly connected inside the fixed mounting seat 31. The cable pipe 312 is in communication with the inside of the cable groove 311 and the bottom of the fixed mounting seat 31 respectively, and openings 313 are formed on both sides of the cable pipe 312. When the cable is wound on the winding rod 32, its end can pass through the cable groove 311 and extend through the cable pipe 312. When the cable wound on the winding rod 32 is tensioned and the part inserted into the cable pipe 312 has a tendency to be pulled out, the fixed mechanism 4 can clamp and fix the end of the cable through the openings 313, so as to avoid the cable from being pulled further. The small force surface clamping at this part will not cause the cable to break at this part, and the cable fixed at this part will not have excessive tension, but only to prevent the cable from loosening from the winding rod 32.

[0023] The fixing mechanism 4 comprises two left and right distributed rectangular frames 41, the cable pipe 312 is located between the two rectangular frames 41, the inside of the rectangular frame 41 is movably connected with a special-shaped wheel 42 through a torsion spring rotating shaft, the special-shaped wheel 42 penetrates through the opening 313 and extends into the inside of the cable pipe 312, the inside of the fixed mounting seat 31 is fixedly connected with two front and rear distributed guide plates 47, the cable pipe 312 is located between the two guide plates 47, the guide plate 47 penetrates through the two rectangular frames 41, and the rectangular frame 41 and the guide plate 47 are slidably connected.

[0024] It is worth mentioning that the torsion spring rotating shaft for installing the special-shaped wheel 42 can make the special-shaped wheel 42 always keep a posture of tilting downward to the cable pipe 312 in a natural state, and the torsion spring rotating shaft is not at the center of the special-shaped wheel 42 but at a position above the center, so that the special-shaped wheel 42 can be in a posture that is easier to be rotated when resisting the cable outer wall, that is, when the cable has a tendency to be pulled out upward, the special-shaped wheel 42 is easier to be rotated upward, and the torsion spring rotating shaft is also at a position above the center in the rectangular frame 41, so that when the special-shaped wheel 42 is stressed, the force transmission of the position of the torsion spring rotating shaft can make the rectangular frame 41 have a tendency to move away from the cable pipe 312, and the stress on the upper part of the rectangular frame 41 is greater than that on the lower part, so that the rectangular frame 41 has a tilting tendency, and the connection between the rectangular frame 41 and the guide plate 47 is a rectangular port matched with the shape of the guide plate 47, when the rectangular frame 41 has a tendency to tilt away from the cable pipe 312, the rectangular frame 41 will be limited by the guide plate 47 and will not directly slide, but will appear a phenomenon that a large friction force between the rectangular frame 41 and the guide plate 47 prevents the rectangular frame 41 from moving, that is, interference occurs between the rectangular frame 41 and the guide plate 47, to ensure that the special-shaped wheel 42 can keep its position stable when limiting the cable from being pulled out, and then realize the function that the clamping force of the two special-shaped wheels 42 on the cable gradually increases as the cable is pulled out.

[0025] The outer end of the special-shaped wheel 42 is embedded with a rubber sleeve 43, and the outer surface of the rubber sleeve 43 is processed with protruding particles, and the rubber sleeve 43 and the protruding particles are both used to increase the friction force of the special-shaped wheel 42 on the cable outer wall, to avoid the problem that the special-shaped wheel 42 cannot be rotated when the cable is pulled out.

[0026] The inside of the fixed mounting seat 31 is fixedly connected with an electric push rod 45 on both sides, the inside of the rectangular frame 41 is fixedly connected with a connecting plate 44, the connecting plate 44 is located on the side of the special-shaped wheel 42 away from the cable pipe 312, the piston rod end of the electric push rod 45 is fixedly connected with a connecting block 46, and the connecting block 46 penetrates through the connecting plate 44.

[0027] There is a circular hole at the connection between the connecting plate 44 and the connecting block 46, and the connecting block 46 passes through the circular hole. The connecting block 46 is composed of a small cylindrical block and two circular plates with a diameter larger than the diameter of the small cylindrical block. The small cylindrical block is integrally formed and located between the two circular plates. The diameter of the circular hole is larger than the diameter of the small cylindrical block, but smaller than the diameter of the circular plates. At the same time, the axial length of the small cylindrical block is larger than the axial length of the circular hole. Therefore, there is a certain clearance in the connection between the connecting block 46 and the connecting plate 44. When the connecting plate 44 and the rectangular frame 41 tend to tilt and move together, there will be no interference between the connecting plate 44 and the connecting block 46 to cause the connection to break, or damage to one of the connecting plate 44 and the connecting block 46, and it will not cause the electric push rod 45 to be damaged by force. When the electric push rod 45 pushes or pulls the connecting plate 44, it can move the rectangular frame 41, thereby realizing the fixing or release of the cable by the fixing mechanism 4.

[0028] Embodiment 2: A slot 331 is respectively provided at the top and the bottom of the clamping mount 33 , a gear cavity 332 is provided inside the clamping mount 33 , and the slot 331 and the gear cavity 332 are communicated with each other.

[0029] The slot 331 is used for inserting and moving the L-shaped connecting arm 53, and the L-shaped connecting arm 53 is slidably connected inside the slot 331. The gear cavity 332 is used to install two gears 56 on the shaft 55. The two gears 56 are respectively engaged with the racks 54 on the two L-shaped connecting arms 53 inside the gear cavity 332.

[0030] The clamping mechanism 5 includes two pressure plates 51 distributed up and down, the rolling rod 32 is located between the two pressure plates 51, and a rubber block 52 is fixedly connected to the inner side of the pressure plate 51. An L-shaped connecting arm 53 is inserted on one side of the pressure plate 51, and the ends of the two L-shaped connecting arms 53 extend to the inside of the two slots 331 respectively. The L-shaped connecting arm 53 is fixedly connected to a rack 1 54 on the side wall inside the slot 331. A shaft 55 is movably connected through the front side of the clamping mounting seat 33. The outer end of the shaft 55 is fixedly connected to two gears 1 56. The gear 1 56 is located inside the gear cavity 332. The two racks 1 54 are respectively meshed and connected to the left and right sides of the two gears 1 56. Both ends of the shaft 55 are fixedly connected to gear 2 57. The two gears 2 57 are respectively located on the front and rear sides of the clamping mounting seat 33. One side of the gear 2 57 is meshed and connected to rack 2 58. The two racks 2 58 are respectively fixedly connected to the front and rear sides of the mounting seat 2.

[0031] With the cable being continuously stretched, the two mounting bases 2 move away from each other, during which the winding frame 3 is pulled by the cable and is slightly displaced within the sliding groove 21, and during the process, the clamping mechanism 5 moves synchronously with the clamping mounting base 33, and the second gear 57 on the shaft 55 also meshes and rotates on the second rack 58, so that the shaft 55 and the two first gears 56 on the shaft 55 rotate, and when the two first gears 56 rotate, they move the two L-shaped connecting arms 53 closer to each other through the meshing with the first rack 54 on the two L-shaped connecting arms 53, and then move the two pressing plates 51 closer to each other, and finally the rubber blocks 52 on the inner side of the pressing plates 51 are pressed more and more tightly on the outer end of the cable wound on the winding rod 32, further improving the friction force of the cable when winding itself, and it is worth mentioning that the pressing plate 51 and the L-shaped connecting arm 53 are connected by inserting, and the L-shaped connecting arm 53 is not inserted into the pressing plate 51, but only a part of it is inserted, so that when winding the cable on the winding rod 32 or detaching the detected cable from the winding rod 32, the pressing plate 51 can be directly pulled off the L-shaped connecting arm 53, and at this time the two pressing plates 51 no longer clamp the winding rod 32 in the middle, so as to facilitate winding or detaching the cable, and when the cable is detected and detached, since the winding frame 3 is no longer pulled and has been pushed back to the original position by the spring 37, the clamping mechanism 5 is also in a relaxed state, that is, the two pressing plates 51 no longer move closer to each other and press on the cable, at this time the pressing plate 51 can be more easily removed from the L-shaped connecting arm 53, otherwise the pressing plate 51 is in a pressed state, the connection between the pressing plate 51 and the L-shaped connecting arm 53 is tight, and the pressing plate 51 cannot be removed.

[0032] The embodiment of the application also provides a detection method suitable for the tensile resistance detection device for cable processing. S1, one end of the cable is inserted into the cable pipe 312, then passes through the cable groove 311 and is wound on the outer end of the winding rod 32, and the two 3 are used to realize the preliminary fixation of the two ends of the cable; S2, the two rectangular frames 41 are pushed closer to each other by the two electric push rods 45, and during the process, the special-shaped wheels 42 in the rectangular frames 41 pass through the opening 313 and abut on the cable; S3, when the tensile testing machine 1 is started to stretch the cable, the cable wound on the winding rod 32 is tightly wound on the winding rod 32 through the friction between the outer walls of the cable wound and contacted with each other, and at the same time, when the cable has a tendency to be pulled out of the cable pipe 312, the cable rotates relative to the inner side with the two special-shaped wheels 42 through the friction between the cable and the rubber sleeve 43 on the special-shaped wheel 42, and the clamping force on the cable becomes tighter and tighter with the continuous relative rotation of the two special-shaped wheels 42; S4, as the cable is continuously stretched, the two mounting seats 2 are away from each other, during which the cable is pulled and the winding frame 3 is displaced in the sliding groove 21, during which the clamping mechanism 5 moves synchronously with the clamping mounting seat 33, the gear two 57 on the shaft 55 also meshes and rotates on the rack two 58, so that the shaft 55 and the two gear one 56 on the shaft 55 rotate, the two gear one 56 rotates and moves the two L-shaped connecting arms 53 closer to each other through the engagement of the two L-shaped connecting arms 53 on the rack one 54, and then the two pressing plates 51 are closer to each other, and finally the rubber block 52 inside the pressing plate 51 is pressed on the outer end of the cable wound on the winding rod 32, further improving the friction of the cable itself when winding; S5, as the two mounting seats 2 are continuously away from each other, the cable fixed at both ends of the two winding frames 3 is continuously stretched and eventually broken, and the tensile property data of the cable is finally measured; Working principle: When the tensile property of the cable is detected by the tensile testing machine 1, the two ends of the cable are wound and fixed on the winding frame 3 in the two mounting seats 2, then the tensile testing machine 1 is started to make the two mounting seats 2 away from each other, and then the cable is gradually stretched, and when the cable is stretched and the cable end has a tendency to be pulled out from the inside of the cable tube 312, the left and right two special-shaped wheels 42 are on the outer wall of the cable and are relatively rotated with the inside, and the two special-shaped wheels 42 are relatively rotated with the inside, and the clamping force on the cable is gradually increased, so that the cable cannot be pulled out, and the cable wound on the winding rod 32 is wound in two layers or more, so that when the cable is stretched, the friction between the outer walls in contact with each other during winding gradually increases, and the contact area of the cable winding also gradually increases, so that the cable can be fixed relying on the friction of its own winding; As the cable is continuously stretched, the two mounting seats 2 are away from each other, during which the cable is pulled and the winding frame 3 is displaced in the sliding groove 21, during which the clamping mechanism 5 moves synchronously with the clamping mounting seat 33, the gear two 57 on the shaft 55 also meshes and rotates on the rack two 58, so that the shaft 55 and the two gear one 56 on the shaft 55 rotate, the two gear one 56 rotates and moves the two L-shaped connecting arms 53 closer to each other through the engagement of the two L-shaped connecting arms 53 on the rack one 54, and then the two pressing plates 51 are closer to each other, and finally the rubber block 52 inside the pressing plate 51 is pressed on the outer end of the cable wound on the winding rod 32, further improving the friction of the cable itself when winding, so that the cable can be fixed more and more tightly to measure more accurate tensile property data.

Claims

1. A tensile performance testing device for cable processing, comprising a tensile testing machine (1), characterized in that: Two mounting seats (2) distributed vertically are fixedly mounted on the tensile testing machine (1), and a winding rack (3) is installed inside the mounting seats (2); The winding frame (3) comprises a fixed mounting seat (31), a winding rod (32) and a clamping mounting seat (33), wherein the fixed mounting seat (31) is located on one side of the clamping mounting seat (33), and the winding rod (32) is fixedly connected between the fixed mounting seat (31) and the winding rod (32); A fixing mechanism (4) is installed inside the fixed mounting seat (31), and a clamping mechanism (5) is installed inside the clamping mounting seat (33).

2. A tensile strength testing device for cable processing according to claim 1, characterized in that: The winding frame (3) further comprises two connecting rods (34), wherein the two connecting rods (34) are respectively fixedly connected to the fixed mounting seat (31) and the clamping mounting seat (33) on a side away from each other, and an I-shaped block (35) is fixedly connected to the end of the connecting rod (34); Slide grooves (21) are provided on both sides of the mounting seat (2), and the I-shaped block (35) passes through the slide grooves (21).

3. The tensile strength testing device for cable processing according to claim 2, characterized in that: The top of the connecting rod (34) is fixedly connected to a spring sleeve block 1 (36), a spring sleeve block 2 (38) is installed above the spring sleeve block 1 (36), a spring (37) is installed between the spring sleeve block 1 (36) and the spring sleeve block 2 (38), and the spring sleeve block 2 (38) is fixedly connected to the inner wall of the mounting seat (2).

4. The tensile strength testing device for cable processing according to claim 1, characterized in that: A cable trough (311) is provided on one side of the top of the fixed mounting seat (31) close to the rolling rod (32), a cable tube (312) is fixedly connected to the interior of the fixed mounting seat (31), the cable tube (312) being connected to the interior of the cable trough (311) and the bottom of the fixed mounting seat (31), respectively, and openings (313) are provided on both sides of the cable tube (312).

5. The tensile strength testing device for cable processing according to claim 4, characterized in that: The fixing mechanism (4) comprises two rectangular frames (41) distributed left and right, the cable tube (312) is located between the two rectangular frames (41), a special-shaped wheel (42) is movably connected to the interior of the rectangular frame (41) via a torsion spring shaft, the special-shaped wheel (42) passes through the opening (313) and extends into the interior of the cable tube (312), the interior of the fixed mounting seat (31) is fixedly connected to two guide plates (47) distributed front and back, the cable tube (312) is located between the two guide plates (47), the guide plates (47) pass through the two rectangular frames (41), and the rectangular frame (41) and the guide plates (47) are slidably connected.

6. The tensile strength testing device for cable processing according to claim 5, characterized in that: A rubber sleeve (43) is embedded and fixed on the outer end of the special-shaped wheel (42), and the outer surface of the rubber sleeve (43) is processed with raised particles.

7. The tensile strength testing device for cable processing according to claim 5, characterized in that: An electric push rod (45) is fixedly connected to both sides of the interior of the fixed mounting seat (31), and a connecting plate (44) is fixedly connected to the inside of the rectangular frame (41). The connecting plate (44) is located on the side of the special-shaped wheel (42) away from the cable tube (312). The piston rod end of the electric push rod (45) is fixedly connected to a connecting block (46), and the connecting block (46) passes through the connecting plate (44).

8. The tensile strength testing device for cable processing according to claim 1, characterized in that: A slot (331) is respectively provided at the top and bottom of the clamping mounting seat (33), a gear cavity (332) is provided inside the clamping mounting seat (33), and the slot (331) and the gear cavity (332) are communicated with each other.

9. The tensile strength testing device for cable processing according to claim 8, characterized in that: The clamping mechanism (5) includes two upper and lower pressure plates (51), the rolling rod (32) is located between the two pressure plates (51), the inner side of the pressure plate (51) is fixedly connected to a rubber block (52), one side of the pressure plate (51) is plugged with an L-shaped connecting arm (53), the ends of the two L-shaped connecting arms (53) extend into the inside of two slots (331) respectively, the side wall of the L-shaped connecting arm (53) located inside the slot (331) is fixedly connected to a rack (54), the front side of the clamping mounting seat (33) is penetrated by a shaft (54) that is movably connected. 5), the outer end of the shaft (55) is fixedly connected to two gears (56), the gear (56) is located inside the gear cavity (332), the two racks (54) are respectively meshed and connected to the left and right sides of the two gears (56), both ends of the shaft (55) are fixedly connected to gears (57), the two gears (57) are respectively located on the front and back sides of the clamping mounting seat (33), one side of the gear (57) is meshed and connected to racks (58), and the two racks (58) are respectively fixedly connected to the front and back sides of the mounting seat (2).

10. A detection method for a tensile strength detection device for cable processing according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Insert one end of the cable into the cable tube (312), then pass it through the cable groove (311) and wrap it around the outer end of the winding rod (32), and use two (3) to achieve preliminary fixation of both ends of the cable; S2, pushing the two rectangular frames (41) closer to each other by two electric push rods (45), during which the special-shaped wheels (42) inside the rectangular frames (41) pass through the opening (313) and press against the cable; S3. When the tensile testing machine (1) is started to stretch the cable, the cable wound on the winding rod (32) is tightly wound on the winding rod (32) by the friction between the outer walls of the cable wound and in contact with each other. At the same time, when the cable tends to be drawn out of the cable tube (312), the cable rotates relative to the inside of the two shaped wheels (42) due to the friction between the cable and the rubber sleeve (43) on the shaped wheel (42). As the two shaped wheels (42) continue to rotate relative to the inside, the clamping force on the cable becomes tighter and tighter. S4. As the cable is continuously stretched, the two mounting seats (2) move away from each other. During this period, the reel (3) is pulled by the cable and displaced a small distance within the range of the slide groove (21). During this process, the clamping mechanism (5) moves synchronously with the clamping mounting seat (33). The gear 2 (57) on the shaft (55) also meshes and rotates on the rack 2 (58), thereby causing the shaft (55) and the two gears 1 (56) on the shaft (55) to rotate. When the two gears 1 (56) rotate, they mesh with the racks 1 (54) on the two L-shaped connecting arms (53), causing the two L-shaped connecting arms (53) to move closer to each other, thereby causing the two pressure plates (51) to move closer to each other. Finally, the rubber block (52) on the inner side of the pressure plate (51) will press more and more tightly on the outer end of the cable wound on the reel (32), further increasing the friction force of the cable itself when it is wound; S5. As the two mounting bases (2) continue to move away from each other, the cable fixed at both ends on the two winding racks (3) will continue to stretch until it breaks, and the tensile performance data of the cable is finally measured.

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