Cable tensile resistance detection device

Abstract

The utility model relates to the technical field of cable tensile resistance detection, and discloses a cable tensile resistance detection device, which is characterized in that the top of a bottom plate is fixedly provided with a base station, the top of the base station is rotatably provided with a three-jaw chuck, and a cable body is clamped and fixed in tooth jaws of the three-jaw chuck; a vertical shell is fixedly installed at the top of the bottom plate and located behind the base table, and a servo motor is fixedly installed at the top of the vertical shell. One end of the cable is locked by adopting the three-jaw chuck, raised grains are arranged on jaw teeth of the three-jaw chuck, and the distance between the jaw teeth can be adjusted, so that one end of the cable is firmly connected; the other end of the cable is inserted into the two clamping plates, inverted tooth grooves are formed in the side faces of the clamping plates, the spring can push the clamping plates to be close to one end of the cable, the clamping plates slide along the sliding grooves in the inclined faces of the clamping heads along with pulling stress of the cable, the two clamping plates clamp the cable more and more tightly, and it is guaranteed that one end of the cable cannot fall off. Therefore, the purposes of locking two ends of the cable and keeping the cable firm are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable tensile strength testing technology, specifically a cable tensile strength testing device. Background Technology

[0002] Cables are typically rope-like cables made up of several or groups of conductors (at least two conductors per group) twisted together. Each group of conductors is insulated from the others and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer.

[0003] After cables are manufactured, they are quite long, so they cannot be tested one by one. Therefore, manufacturers usually randomly select a section of the cable for various tests, such as withstand voltage test, insulation resistance, mechanical properties before aging, DC conductor resistance, cross-sectional area and conductor type testing, etc.

[0004] Tensile strength testing is one of the cable testing methods. Conventional cable tensile strength testing uses bolts to drive clamps to hold both ends of the cable, and then drives the two clamps to expand to achieve the tensile test. However, the cable ends are not locked securely enough, which causes the ends to fall off when the cable is pulled, resulting in failure of the cable tensile strength test and low test efficiency. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a cable tensile strength testing device, which has the advantage of securely locking both ends of the cable, thus solving the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the aforementioned goal of securely locking both ends of the cable, this utility model provides the following technical solution: a cable tensile strength testing device, comprising a base plate, a platform fixedly installed on the top of the base plate, a three-jaw chuck rotatably installed on the top of the platform, a cable body clamped and fixed in the jaws of the three-jaw chuck, a vertical shell fixedly installed on the top of the base plate and behind the platform, a servo motor fixedly installed on the top of the vertical shell, a lead screw shaft fixedly installed at the output end of the servo motor, a lead screw sleeve threaded to the outer side of the lead screw shaft, the lead screw sleeve being embedded in the interior of a sliding sleeve, a support fixedly installed at the other end of the sliding sleeve, a reinforcing plate fixedly installed on the inner wall of the support, an electronic tensile tester fixedly installed on the surface of the support, a clamp movably installed at the output end of the electronic tensile tester, and the clamp being fixedly clamped and connected to the top of the cable body.

[0009] Preferably, the surface of the chuck is provided with an installation groove, the inner wall of the chuck is provided with a sliding groove, a slider is slidably installed inside the sliding groove, a clamping plate is fixedly installed on the side of the slider, the side of the clamping plate is provided with a toothed groove, a spring is fixedly installed on the top of the slider, and the other end of the spring is fixedly installed to the inner wall of the sliding groove.

[0010] Preferably, the groove is formed on the inclined surface of the mounting groove, the cross-section of the groove and the slider is T-shaped, and the clamping plate is slidably connected inside the mounting groove through the groove and the slider.

[0011] Preferably, the electronic tensile tester is a digital force measuring instrument with a display screen, and both the electronic tensile tester and the servo motor are connected to the controller signal.

[0012] Preferably, the cross-section of the tooth groove is an isosceles right triangle, and the side of the clamping plate is provided with a tangent parallel to the inclined surface of the mounting groove.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a cable tensile strength testing device, which has the following beneficial effects:

[0015] This cable tensile strength testing device uses a three-jaw chuck to lock one end of the cable. The chuck's teeth have a wavy pattern and the spacing between the teeth can be adjusted to ensure a secure connection at one end of the cable. The other end of the cable is inserted between two clamps with inverted toothed grooves on their sides. Springs push the clamps closer to the cable end. As the cable is pulled and subjected to force, the clamps slide along the grooves on the inclined surfaces of the clamps. The two clamps tighten the cable more and more, ensuring that one end of the cable will not fall off, thus achieving the purpose of locking both ends of the cable and keeping them secure. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the electric tensile tester, the three-jaw chuck, and the cable body of this utility model;

[0019] Figure 4 This is an exploded view of the chuck of this utility model.

[0020] In the diagram: 1. Base plate; 2. Base platform; 3. Three-jaw chuck; 4. Cable body; 5. Vertical shell; 6. Servo motor; 7. Lead screw shaft; 8. Lead screw sleeve; 9. Sliding sleeve; 10. Support; 11. Reinforcing plate; 12. Electronic tensile tester; 13. Chuck; 131. Mounting groove; 132. Sliding groove; 133. Slider; 134. Clamping plate; 135. Tooth groove; 136. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-2 A cable tensile strength testing device includes a base plate 1, a base platform 2 fixedly installed on the top of the base plate 1, and a three-jaw chuck 3 rotatably installed on the top of the base platform 2. The three-jaw chuck 3 is an existing mature product that can be directly purchased and used by those skilled in the art. A cable body 4 is clamped and fixed in the teeth of the three-jaw chuck 3.

[0023] Please see Figure 1-2 A vertical shell 5 is fixedly installed on the top of the base plate 1 and behind the base platform 2. A servo motor 6 is fixedly installed on the top of the vertical shell 5. A lead screw shaft 7 is fixedly installed at the output end of the servo motor 6. A lead screw sleeve 8 is threadedly connected to the outside of the lead screw shaft 7. The lead screw sleeve 8 is embedded in the inside of the sliding sleeve 9. A strip hole corresponding to the sliding sleeve 9 is opened on the surface of the vertical shell 5. A support 10 is fixedly installed at the other end of the sliding sleeve 9. The lead screw shaft 7 is driven to rotate by the servo motor 6. Then the lead screw sleeve 8, the sliding sleeve 9 and the support 10 will extend vertically to move up or down.

[0024] Please see Figure 1-2 A reinforcing plate 11 is fixedly installed on the inner wall of the support 10, and an electronic tensile tester 12 is fixedly installed on the surface of the support 10. The electronic tensile tester 12 is a digital force measuring instrument with a display screen, specifically an Adeberg HP-1000N digital display force measuring counter push-pull force gauge. Both the electronic tensile tester 12 and the servo motor 6 are connected to the controller signal. A clamp 13 is movably installed at the output end of the electronic tensile tester 12, and the clamp 13 is fixedly clamped and connected to the top of the cable body 4.

[0025] Please see Figure 3-4The chuck 13 has a mounting groove 131 on its surface and a sliding groove 132 on its inner wall. There are two sets of sliding grooves 132, with two in each set. The sliding grooves 132 are formed on the inclined surface of the mounting groove 131. The side of the clamping plate 134 has a cross-section parallel to the inclined surface of the mounting groove 131. A slider 133 is slidably mounted inside the sliding groove 132. The cross-sections of the sliding groove 132 and the slider 133 are T-shaped. The clamping plate 134 is fixedly mounted on the side of the slider 133. The clamping plate 134 is slidably connected inside the mounting groove 131 through the sliding groove 132 and the slider 133.

[0026] Please see Figure 3-4 The clamping plate 134 has a toothed groove 135 on its side. The cross-section of the toothed groove 135 is an isosceles right triangle. A spring 136 is fixedly installed on the top of the slider 133, and the other end of the spring 136 is fixedly installed on the inner wall of the slide groove 132. The spring 136 pushes the slider 133 to slide in the slide groove 132, and then the clamping plates 134 on both sides will approach the cable body 4. The clamping plates 134 use the toothed groove 135 to engage with the cable body 4.

[0027] Working principle: During use, one end of the cable is locked by a three-jaw chuck 3. The teeth of the three-jaw chuck 3 have a wavy pattern and the spacing between the teeth can be adjusted to ensure a firm connection at one end of the cable. The other end of the cable is inserted between two clamps 134. The clamps 134 have inverted toothed grooves 135 on their sides. A spring 136 pushes the clamps 134 close to one end of the cable. As the cable is pulled and subjected to force, the clamps 134 slide along the grooves 132 on the inclined surface of the clamp 13. The two clamps 134 clamp the cable tighter and tighter to ensure that one end of the cable will not fall off, thereby achieving the purpose of locking both ends of the cable and keeping them firmly in place.

[0028] Then, the servo motor 6 drives the lead screw shaft 7 to rotate, and the lead screw sleeve 8, sliding sleeve 9 and support 10 will extend vertically and move upward. As the support 10 moves upward, the clamp 13 is subjected to tension from the cable, and the cable becomes tighter and tighter. At the same time, the output end of the electronic tensile tester 12 will also be stretched out. As the cable is continuously pulled, the display screen on the surface of the electronic tensile tester 12 will also display the corresponding tensile force value, which is convenient for users to view directly.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable tensile strength testing device, comprising a base plate (1), a base platform (2) fixedly mounted on the top of the base plate (1), a three-jaw chuck (3) rotatably mounted on the top of the base platform (2), and a cable body (4) clamped and fixed in the jaws of the three-jaw chuck (3), characterized in that: A vertical shell (5) is fixedly installed on the top of the base plate (1) and behind the base (2). A servo motor (6) is fixedly installed on the top of the vertical shell (5). A lead screw shaft (7) is fixedly installed at the output end of the servo motor (6). A lead screw sleeve (8) is threadedly connected to the outside of the lead screw shaft (7). The lead screw sleeve (8) is embedded in the inside of the sliding sleeve (9). A support (10) is fixedly installed at the other end of the sliding sleeve (9). A reinforcing plate (11) is fixedly installed on the inner wall of the support (10). An electronic tensile tester (12) is fixedly installed on the surface of the support (10). A clamp (13) is movably installed at the output end of the electronic tensile tester (12). The clamp (13) is fixedly clamped and connected to the top of the cable body (4).

2. The cable tensile strength testing device according to claim 1, characterized in that: The chuck (13) has an installation groove (131) on its surface and a sliding groove (132) on its inner wall. A slider (133) is slidably installed inside the sliding groove (132). A clamping plate (134) is fixedly installed on the side of the slider (133). A toothed groove (135) is opened on the side of the clamping plate (134). A spring (136) is fixedly installed on the top of the slider (133). The other end of the spring (136) is fixedly installed to the inner wall of the sliding groove (132).

3. The cable tensile strength testing device according to claim 2, characterized in that: The groove (132) is formed on the inclined surface of the mounting groove (131). The cross-section of the groove (132) and the slider (133) is T-shaped. The clamp (134) slides and connects inside the mounting groove (131) through the groove (132) and the slider (133).

4. The cable tensile strength testing device according to claim 1, characterized in that: The electronic tensile tester (12) is a digital force measuring instrument with a display screen. Both the electronic tensile tester (12) and the servo motor (6) are connected to the controller signal.

5. The cable tensile strength testing device according to claim 2, characterized in that: The cross-section of the tooth groove (135) is set in an isosceles right triangle shape, and the side of the clamping plate (134) is provided with a tangent that is parallel to the inclined surface of the mounting groove (131).

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