Cable tensile strength test device and method

Abstract

The invention relates to the technical field of cable tensile strength testing, in particular to a cable tensile strength testing device and method.The cable tensile strength testing device comprises two movable frames, a fixed frame, a tension mechanism, a mounting assembly, a first motor, a driving gear, a tension spring and two tension sensors; wherein a driven gear is arranged below one lifting two-way screw, two pressing plates are symmetrically arranged on the two lifting two-way screws, the two lifting two-way screws are in linkage through a synchronous belt and a synchronous wheel, a first mounting box is arranged below the moving frame, a second mounting box is arranged below the first mounting box, and the first mounting box is connected with the second mounting box. A connecting gear is rotatably arranged in the second mounting box, and through the linkage design of two lifting bidirectional screws rotatably arranged in the two moving frames, a synchronous belt and a synchronous wheel, the two lifting bidirectional screws can rotate synchronously, and then the two pressing plates which are symmetrically arranged are driven to rapidly fix the cable at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of cable tensile strength testing, and particularly to a cable tensile strength testing device and method. Background Art

[0002] Cable tensile strength testing is a key performance test for determining the maximum tensile force that a cable can withstand when subjected to a tensile force, aiming to evaluate the mechanical strength and structural stability of the cable and ensure its safe and reliable operation in practical applications.

[0003] The prior art patent CN222299319U discloses a cable tensile strength testing device, including a bottom plate, a display, and a tensile force sensor. The display is fixedly arranged above the front of the bottom plate. A guiding groove is opened inside the right end of the bottom plate. A tensile force assembly is arranged inside the guiding groove. A first base is arranged above the tensile force assembly. A second base is arranged directly to the left of the first base. The second base is fixedly arranged above the left of the bottom plate. By manually pressing down the handle, the movable shaft is controlled to rotate. At this time, the convex column fixedly arranged on the outer wall of the left end of the movable shaft can squeeze the spiral groove, so that the movable block is pressed and drives the first base fixed on its top to move steadily to the right along the guiding groove, starting the tensile test on the cable. And through the second spring and the tensile force sensor, it is convenient to display the tensile force data on the display in real time, facilitating the observation and recording of the cable tensile strength limit data.

[0004] However, in the aforementioned prior art, since the two structures for fixing the cable are independently arranged, when fixing the cable, two operations need to be carried out sequentially to complete the fixing of the cable. This process is too time-consuming and laborious, and it is not convenient to quickly fix the cable. Summary of the Invention

[0005] The purpose of the present invention is to provide a cable tensile strength testing device and method to solve the technical problem that in the prior art, since the two structures for fixing the cable are independently arranged, when fixing the cable, two operations need to be carried out sequentially to complete the fixing of the cable. This process is too time-consuming and laborious, and it is not convenient to quickly fix the cable.

[0006] To achieve the above object, the present invention provides a cable tensile strength test device, which includes two moving frames and a fixed frame. Two lifting bidirectional screws are rotatably arranged in the moving frame, and a driven gear is arranged below one of the lifting bidirectional screws. Two pressing plates are symmetrically arranged on the two lifting bidirectional screws. A tension spring and two tension sensors are arranged between the two corresponding pressing plates between the two moving frames, and the tension spring is located at the tension transmission ends of the two tension sensors. The two lifting bidirectional screws are linked by a synchronous belt and synchronous wheels. A first installation box is arranged below the moving frame, and the synchronous belt and the synchronous wheels are both located in the first installation box. A second installation box is arranged below the first installation box, and the driven gear extends into the second installation box. A connecting gear is rotatably arranged in the second installation box, and the connecting gear meshes with the driven gear and is located on one side of the driven gear. A tension mechanism is arranged at the inner bottom of the fixed frame, and a first motor is also arranged at the inner bottom of the fixed frame through an installation component. The output end of the first motor is provided with a driving gear. The two moving frames are symmetrically arranged on the tension mechanism, and the driving gear meshes with the corresponding connecting gear and is located between the two connecting gears.

[0007] Wherein, fixed blocks are arranged at both ends of the two pressing plates. The fixed blocks have threaded grooves, and the two lifting bidirectional screws are respectively threadedly connected with the corresponding fixed blocks and are located in the threaded grooves.

[0008] Wherein, the diameter of the driven gear is the same as the diameter of the connecting gear, and the diameter of the connecting gear is larger than the diameter of the driving gear.

[0009] Wherein, the tension mechanism includes two moving seats, a tension bidirectional screw and two supporting blocks. A threaded sleeve is arranged below the moving seat. The two moving seats are respectively fixedly connected with the corresponding moving frames and are located below the moving frames. The threaded sleeves of the two moving seats are respectively threadedly connected with the tension bidirectional screw and are symmetrically sleeved on the tension bidirectional screw. The tension bidirectional screw is rotatably connected with the corresponding supporting block through a bearing and is located between the two supporting blocks, and the tension bidirectional screw is driven by a second motor. The two supporting blocks are respectively fixedly connected with the fixed frame and are located at the inner bottom of the fixed frame.

[0010] Wherein, the tensile mechanism further includes a plurality of support sliders and two support slide seats. The plurality of support sliders are respectively fixedly connected to the corresponding moving frames, and are symmetrically arranged in pairs at both ends of the moving frame. Moreover, the plurality of support sliders are respectively slidably connected to the corresponding support slide seats and are located within the support slide seats. The two support slide seats are respectively fixedly connected to the fixed frame and are symmetrically arranged on both sides of the fixed frame.

[0011] Wherein, the mounting assembly includes a first C-shaped plate and a second C-shaped plate. The first C-shaped plate is fixedly connected to the second C-shaped plate and is located in the middle of the second C-shaped plate. Moreover, the first C-shaped plate and the second C-shaped plate are arranged in a cross-symmetrical manner, and the first motor is arranged between the first C-shaped plate and the second C-shaped plate.

[0012] The present invention also provides a method for testing the tensile strength of a cable, which is applied to the cable tensile strength testing device described above, and includes the following steps:

[0013] First, place the cable sample between the two pressing plates between the two moving frames.

[0014] Subsequently, based on the driving of the first motor, the driving gear rotates. The driving gear drives the two connecting gears respectively, and the connecting gears drive the driven gear, thereby enabling the driven gear to drive the lifting bidirectional screw to rotate.

[0015] And, based on the fact that the two lifting bidirectional screws are linked through the synchronous belt and the synchronous pulley, and the pressing plate is threadedly connected to the lifting bidirectional screw. At this time, the two pressing plates will synchronously descend to press and fix both ends of the cable sample.

[0016] Meanwhile, based on the driving of the second motor, the tensile bidirectional screw is threadedly connected to the two threaded sleeves. At this time, the two moving seats will move away from each other, so that the pressed cable sample makes a relative movement.

[0017] Finally, based on the rotation speed of the second motor and the moving distance of the two moving frames, the tensile data of the cable is calculated.

[0018] A cable tensile strength test device and method of the present invention include two moving frames and a fixed frame. Two lifting bidirectional screws are rotatably arranged in the moving frames, and a driven gear is arranged below one of the lifting bidirectional screws. Two pressing plates are symmetrically arranged on the two lifting bidirectional screws. A tension spring and two tension sensors are arranged between the two corresponding pressing plates of the two moving frames, and the tension spring is located at the tension transmission ends of the two tension sensors. The two lifting bidirectional screws are linked by a synchronous belt and synchronous wheels. A first installation box is arranged below the moving frame, and a second installation box is arranged below the first installation box. A connecting gear is rotatably arranged in the second installation box. A tension mechanism is arranged at the inner bottom of the fixed frame, and a first motor is also arranged at the inner bottom of the fixed frame through an installation component. A driving gear is arranged at the output end of the first motor. Through the linkage design of the two lifting bidirectional screws rotatably arranged in the two moving frames and the synchronous belt and the synchronous wheels, the two lifting bidirectional screws can rotate synchronously, thereby driving the two symmetrically arranged pressing plates to move synchronously, and the two ends of the cable can be fixed simultaneously without operating two independent structures sequentially, which greatly saves time and labor and realizes the rapid fixation of the cable. In this way, the technical problem that since the two structures for fixing the cable are independently arranged, it is necessary to perform two operations sequentially to complete the fixation of the cable, which is too time-consuming and laborious and not convenient for the rapid fixation of the cable is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art.

[0020] Figure 1 is the three-dimensional stereogram of the first embodiment of the present invention.

[0021] Figure 2 is the side view of the first embodiment of the present invention.

[0022] Figure 3 is of the present invention Figure 2 cross-sectional view taken along line A-A.

[0023] Figure 4 is of the present invention Figure 3 cross-sectional view taken along line B-B.

[0024] Figure 5 is the front view of the second embodiment of the present invention.

[0025] Figure 6 is of the present invention Figure 5 cross-sectional view taken along line C-C.

[0026] Figure 7 is the Figure 6 cross-sectional view of the D-D line in the present invention.

[0027] Figure 8 is the three-dimensional perspective view of the third embodiment of the present invention.

[0028] Figure 9 is the side view of the third embodiment of the present invention.

[0029] Figure 10 is the Figure 9 cross-sectional view of the E-E line in the present invention.

[0030] Figure 11 is the step flow chart of a method for testing the tensile strength of a cable in the present invention.

[0031] 101 - moving frame, 102 - fixed frame, 103 - lifting bidirectional screw, 104 - driven gear, 105 - pressing plate, 106 - synchronous belt, 107 - synchronous pulley, 108 - first mounting box, 109 - second mounting box, 110 - connecting gear, 111 - tension mechanism, 112 - mounting assembly, 113 - first motor, 114 - driving gear, 115 - fixed block, 116 - threaded groove, 117 - tension spring, 118 - tension sensor, 201 - moving seat, 202 - tension bidirectional screw, 203 - support block, 204 - threaded sleeve, 205 - support slider, 206 - support sliding seat, 207 - first C-shaped plate, 208 - second C-shaped plate, 209 - second motor, 301 - bending roller, 302 - electric push rod, 303 - mounting block, 304 - side plate, 305 - moving block, 306 - adjustment groove, 307 - through hole, 308 - locking block, 309 - locking groove. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0033] First embodiment:

[0034] Please refer to Figures 1 to 4 , wherein Figure 1 is the three-dimensional perspective view of the first embodiment of the present invention, Figure 2 is the side view of the first embodiment of the present invention, Figure 3 is the Figure 2 cross-sectional view of the A-A line in the present invention, Figure 4 is the Figure 3 cross-sectional view of the B-B line in the present invention.

[0035] The present invention provides a cable tensile strength test device, which includes two moving frames 101 and a fixed frame 102. Two lifting bidirectional screws 103 are rotatably arranged in the moving frame 101, and a driven gear 104 is arranged below one of the lifting bidirectional screws 103. Two pressing plates 105 are symmetrically arranged on the two lifting bidirectional screws 103. A tension spring 117 and two tension sensors 118 are arranged between the two corresponding pressing plates 105 between the two moving frames 101, and the tension spring 117 is located at the tension transmission ends of the two tension sensors 118. The two lifting bidirectional screws 103 are linked by a synchronous belt 106 and synchronous pulleys 107. A first installation box 108 is arranged below the moving frame 101, and the synchronous belt 106 and the synchronous pulleys 107 are both located in the first installation box 108. A second installation box 109 is arranged below the first installation box 108, and the driven gear 104 extends into the second installation box 109. A connecting gear 110 is rotatably arranged in the second installation box 109, and the connecting gear 110 meshes with the driven gear 104 and is located on one side of the driven gear 104. A tension mechanism 111 is arranged at the inner bottom of the fixed frame 102. A first motor 113 is also arranged at the inner bottom of the fixed frame 102 through a mounting assembly 112. The output end of the first motor 113 is provided with a driving gear 114. The two moving frames 101 are symmetrically arranged on the tension mechanism 111, and the driving gear 114 meshes with the corresponding connecting gear 110 and is located between the two connecting gears 110. Through the linkage design of the two lifting bidirectional screws 103 rotatably arranged in the two moving frames 101, the synchronous belt 106 and the synchronous pulleys 107, the synchronous movement of the two pressing plates 105 is realized. This design enables the pressing operation to be carried out on both ends of the cable simultaneously when the cable is fixed, avoiding the cumbersome process of the traditional independent fixed structure that requires two operations in sequence, greatly improving the efficiency of cable fixing, saving time and labor, and contributing to the rapid development of the cable tensile strength test. At the same time, the cooperation of the driven gear 104, the connecting gear 110, the driving gear 114 and the first motor 113 realizes the power transmission and precise control of the rotation of the lifting bidirectional screw 103, making the entire fixing process more automated and precise.

[0036] Among them, fixed blocks 115 are provided at both ends of the two pressing plates 105. Thread grooves 116 are provided in the fixed blocks 115, and the two lifting bidirectional screws 103 are respectively threadedly connected to the corresponding fixed blocks 115 and are located in the thread grooves 116. Through this design, the connection stability and reliability between the pressing plate 105 and the lifting bidirectional screw 103 are enhanced. The threaded connection method enables the pressing plate 105 to move smoothly and accurately under the drive of the lifting bidirectional screw 103, ensuring that when fixing the cable, the pressing plate 105 can apply uniform and stable pressure, thereby more effectively fixing the cable and avoiding the situation that the cable loosens or shifts during the test due to insecure connection, improving the accuracy and reliability of the test results.

[0037] Secondly, the diameter of the driven gear 104 is the same as that of the connecting gear 110, and the diameter of the connecting gear 110 is larger than that of the driving gear 114. Through this design, a certain deceleration and torque increase effect can be generated, making the power transmitted to the driven gear 104 and the lifting bidirectional screw 103 smoother and more powerful.

[0038] When using a cable tensile strength test device according to this embodiment, first place the cable between the two pressing plates 105 of the two moving frames 101, start the first motor 113, and the driving gear 114 at the output end of the first motor 113 rotates. Since the driving gear 114 meshes with the two connecting gears 110, and the two connecting gears 110 are respectively located on both sides of the driving gear 114, the driving gear 114 drives the two connecting gears 110 to rotate synchronously. The connecting gear 110 meshes with the driven gear 104, and the driven gear 104 rotates with the connecting gear 110, thereby driving one of the lifting bidirectional screws 103 connected thereto to rotate. The other lifting bidirectional screw 103 is linked through the synchronous belt 106 and the synchronous pulley 107, so that the two lifting bidirectional screws 103 rotate synchronously. The pressing plate 105 on the lifting bidirectional screw 103 moves along the lifting bidirectional screw 103 because it is threadedly connected to the fixed block 115. When the lifting bidirectional screw 103 rotates, the two pressing plates 105 move relatively closer to clamp and fix both ends of the cable. After that, the tension mechanism 111 at the bottom of the fixed frame 102 starts to work, applies a tension to the two moving frames 101, thereby stretching the cable fixed on the moving frame 101, and the tension spring 117 is pulled open between the two tension sensors 118. Finally, based on the tension parameters of the two tension sensors 118, the ultimate data of the cable tensile strength can be calculated. It should be noted that when the two moving frames 1 move relatively, the two connecting gears 110 will be separated from the driving gear 114, but after the test on the cable is completed, the two moving frames 101 need to be reset so that the two connecting gears 110 form a meshing state with the driving gear 114 for the next test.

[0039] Second Embodiment:

[0040] On the basis of the first embodiment, please refer to Figures 5 to 7 , where Figure 5 is the front view of the second embodiment of the present invention, Figure 6 is of the present invention Figure 5 Cross-sectional view taken along line C-C in Figure 7 is of the present invention Figure 6 Cross-sectional view taken along line D-D in

[0041] The present invention provides a cable tensile strength test device. The tensile mechanism 111 includes two moving seats 201, a tensile bidirectional screw 202, and two support blocks 203. A threaded sleeve 204 is provided below the moving seat 201. The two moving seats 201 are respectively fixedly connected to the corresponding moving frames 101 and are located below the moving frames 101. The threaded sleeves 204 of the two moving seats 201 are respectively threadedly connected to the tensile bidirectional screw 202 and symmetrically sleeved on the tensile bidirectional screw 202. The tensile bidirectional screw 202 is rotatably connected to the corresponding support block 203 through a bearing and is located between the two support blocks 203. Moreover, the tensile bidirectional screw 202 is driven by a second motor 209. The two support blocks 203 are respectively fixedly connected to the fixed frame 102 and are located at the inner bottom of the fixed frame 102. Through this design, the two moving frames 101 can move relatively or towards each other under the rotation of the tensile bidirectional screw 202, so that different directions and magnitudes of tensile forces can be applied to the cable fixed on the moving frame 101, meeting the requirements for tensile force adjustment in the cable tensile strength test. By precisely controlling the rotation of the tensile bidirectional screw 202 through the second motor 209, precise control of the tensile force can be achieved, ensuring the stability and accuracy of the tensile force during the test and helping to obtain more reliable test data.

[0042] Among them, the tensile mechanism 111 further includes a plurality of support sliders 205 and two support sliding seats 206. The plurality of support sliders 205 are respectively fixedly connected to the corresponding moving frames 101, are symmetrically arranged in pairs at both ends of the moving frames 101, and the plurality of support sliders 205 are also respectively slidably connected to the corresponding support sliding seats 206 and are located inside the support sliding seats 206. The two support sliding seats 206 are respectively fixedly connected to the fixed frame 102 and are symmetrically arranged on both sides of the fixed frame 102. Through this design, a stable support and guiding effect is provided for the moving frame 101, enabling the moving frame 101 to move smoothly under the drive of the tensile bidirectional screw 202 and avoiding the situation of shaking or deviation during the moving process.

[0043] Secondly, the mounting assembly 112 includes a first C-shaped plate 207 and a second C-shaped plate 208. The first C-shaped plate 207 is fixedly connected to the second C-shaped plate 208 and is located in the middle of the second C-shaped plate 208. The first C-shaped plate 207 and the second C-shaped plate 208 are arranged in a cross-symmetrical manner. The first motor 113 is disposed between the first C-shaped plate 207 and the second C-shaped plate 208. This design makes the installation of the first motor 113 more stable, capable of withstanding the vibration and torque generated during power transmission. The cross-symmetrical structure helps to evenly disperse stress, improving the overall strength and stability of the mounting assembly 112 and ensuring the reliability and stability of the first motor 113 during operation.

[0044] Third Embodiment:

[0045] Based on the second embodiment, please refer to Figures 8 to 10 , wherein Figure 8 is the three-dimensional perspective view of the third embodiment of the present invention, Figure 9 is the side view of the third embodiment of the present invention, Figure 10 is of the present invention Figure 9 the cross-sectional view taken along line E-E in

[0046] The present invention provides a cable tensile strength test device, which further includes two cable bending mechanisms. Each cable bending mechanism includes two cable bending components. The two cable bending components are respectively fixedly connected to the corresponding moving frame 101 and are arranged oppositely on the two outer sides of the moving frame 101 and extend between the two pressing plates 105.

[0047] Wherein, each cable bending component includes a bending roller 301, an electric push rod 302, a mounting block 303 and a side plate 304. A moving block 305 is disposed above the bending roller 301. The upper end face of the side plate 304 has an adjustment groove 306. The end face of the pressing plate 105 has two through holes 307. The moving block 305 is fixedly connected to the electric push rod 302 and is located at the output end of the electric push rod 302. The bending roller 301 extends into the adjustment groove 306 between the two pressing plates 105. The electric push rod 302 is fixedly connected to the mounting block 303 and is located on the mounting block 303. The side plate 304 is fixedly connected to the corresponding moving frame 101 and is located on one outer side of the moving frame 101. The electric push rod 302 facilitates the pushing of the bending roller 301, thereby bending the cable sample and increasing the contact area with the two pressing plates 105.

[0048] Secondly, the cable bending assembly further includes two locking blocks 308. The lower end surface of the pressing plate 105 above the moving frame 101 has two locking grooves 309, and the locking grooves 309 are adapted to the locking blocks 308. The two locking blocks 308 are respectively fixedly connected to the corresponding pressing plates 105 and are located on the pressing plates 105 below the moving frame 101. Through the locking blocks 308, it is convenient to lock the cable, and then form an S shape under the action of the two bending rollers 301.

[0049] In the present invention, by placing the cable sample between the two locking blocks 308 and also between the bending rollers 301 of the two cable bending assemblies, then controlling one of the cable bending assemblies, the electric push rod 302 is used to push the moving block 305 towards the other end of the adjustment groove 306, and the bending roller 301 is used to push the cable sample, causing the cable sample to bend. Then, controlling the other cable bending assembly makes the cable in an S shape, thereby increasing the contact area after being pressed by the two pressing plates 105, and further providing a fixing effect during pressing.

[0050] On the basis of the third embodiment, please refer to Figure 11 , where Figure 11 is a step flowchart of a method for testing the tensile strength of a cable according to the present invention.

[0051] The present invention also provides a method for testing the tensile strength of a cable, which is applied to the cable tensile strength testing device described above, and includes the following steps:

[0052] S1: First, place the cable sample between the two pressing plates 105 between the two moving frames 101;

[0053] S2: Subsequently, based on the first motor 113 driving the driving gear 114 to rotate, the driving gear 114 respectively drives the two connecting gears 110, and the connecting gears 110 drive the driven gear 104, so that the driven gear 104 drives the lifting bidirectional screw 103 to rotate;

[0054] S3: And, based on the two lifting bidirectional screws 103 being linked through the synchronous belt 106 and the synchronous pulley 107, and the pressing plate 105 being threadedly connected to the lifting bidirectional screw 103, at this time, the two pressing plates 105 will synchronously descend to press and fix the two ends of the cable sample;

[0055] S4: Meanwhile, based on the driving of the second motor 209, the tensile bidirectional screw 202 is threadedly connected to the two thread sleeves 204. At this time, the two moving seats 201 will move away from each other, so that the compressed cable sample makes a relative movement, and the tensile spring 117 will be stretched between the two tensile sensors 118;

[0056] S5: Finally, based on the tensile parameters of the two tensile sensors 118, the ultimate data of the cable tensile strength can be calculated.

[0057] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A cable tensile strength test device, characterized in that it includes two moving frames and a fixed frame. Two lifting bidirectional screws are rotatably arranged in the moving frame, and a driven gear is arranged below one of the lifting bidirectional screws. Two pressing plates are symmetrically arranged on the two lifting bidirectional screws. A tension spring and two tension sensors are arranged between the two corresponding pressing plates between the two moving frames, and the tension spring is located at the tension transmission ends of the two tension sensors. The two lifting bidirectional screws are linked by a synchronous belt and synchronous pulleys. A first installation box is arranged below the moving frame, and the synchronous belt and the synchronous pulleys are both located in the first installation box. A second installation box is arranged below the first installation box, and the driven gear extends into the second installation box. A connecting gear is rotatably arranged in the second installation box, and the connecting gear meshes with the driven gear and is located on one side of the driven gear. A tension mechanism is arranged at the inner bottom of the fixed frame, and a first motor is also arranged at the inner bottom of the fixed frame through an installation component. The output end of the first motor is provided with a driving gear. The two moving frames are symmetrically arranged on the tension mechanism, and the driving gear meshes with the corresponding connecting gear and is located between the two connecting gears.

2. The cable tensile strength test device according to claim 1, characterized in that fixed blocks are arranged at both ends of the two pressing plates. Threaded grooves are provided in the fixed blocks, and the two lifting bidirectional screws are respectively threadedly connected with the corresponding fixed blocks and are located in the threaded grooves.

3. The cable tensile strength test device according to claim 2, characterized in that the diameter of the driven gear is the same as the diameter of the connecting gear, and the diameter of the connecting gear is larger than the diameter of the driving gear.

4. The cable tensile strength test device according to claim 3, characterized in that the tension mechanism includes two moving seats, a tension bidirectional screw and two support blocks. A threaded sleeve is arranged below the moving seat. The two moving seats are respectively fixedly connected with the corresponding moving frames and are located below the moving frames. The threaded sleeves of the two moving seats are respectively threadedly connected with the tension bidirectional screw and are symmetrically sleeved on the tension bidirectional screw. The tension bidirectional screw is rotatably connected with the corresponding support block through a bearing and is located between the two support blocks, and the tension bidirectional screw is driven by a second motor. The two support blocks are respectively fixedly connected with the fixed frame and are located at the inner bottom of the fixed frame.

5. The cable tensile strength test device according to claim 4, characterized in that the tension mechanism further includes a plurality of support sliders and two support sliding seats. The plurality of support sliders are respectively fixedly connected with the corresponding moving frames and are symmetrically arranged in pairs at both ends of the moving frames. The plurality of support sliders are also respectively slidably connected with the corresponding support sliding seats and are located in the support sliding seats. The two support sliding seats are respectively fixedly connected with the fixed frame and are symmetrically arranged on both sides of the fixed frame.

6. The cable tensile strength test device according to claim 5, wherein the installation assembly includes a first C-shaped plate and a second C-shaped plate. The first C-shaped plate is fixedly connected to the second C-shaped plate, is located in the middle of the second C-shaped plate, and the first C-shaped plate and the second C-shaped plate are arranged in a cross-symmetrical manner. The first motor is disposed between the first C-shaped plate and the second C-shaped plate.

7. A method for testing the tensile strength of a cable, applied to the cable tensile strength test device as claimed in claim 6, characterized in that, It includes the following steps: First, place the cable sample between the two pressing plates between the two moving frames; Subsequently, based on the driving of the first motor, the driving gear rotates. The driving gear drives the two connecting gears respectively, and the connecting gears drive the driven gears, so that the driven gears drive the lifting bidirectional screw to rotate; Moreover, based on the fact that the two lifting bidirectional screws are linked through the synchronous belt and the synchronous wheels, and the pressing plates are threadedly connected to the lifting bidirectional screws. At this time, the two pressing plates will synchronously descend to press and fix the two ends of the cable sample; Meanwhile, based on the driving of the second motor, the tensile bidirectional screw is threadedly connected to the two threaded sleeves. At this time, the two moving seats will move away from each other, so that the pressed cable sample makes a relative movement, and the tension spring will be pulled open between the two tension sensors; Finally, based on the tension parameters of the two tension sensors, the cable tensile strength limit data can be calculated.

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