Wire tension testing device

Abstract

The utility model belongs to the technical field of tension testing devices, and particularly relates to an electric wire tension testing device which comprises a rack, an adjusting frame is welded on the surface of the rack, an adjusting seat is welded at the top of a movable column, a screw rod, a bearing and the movable column are all movably installed in a notch, the notch is formed in the surface of a clamp, and the clamp is connected with the screw rod. According to the utility model, the screw rod is adjusted towards the interior of the notch, the movement of the screw rod towards the interior of the notch pushes the movable column to move through the bearing, the movable column moves to drive the adjusting seat to move, and the adjusting seat moves to drive the cross rod to move, so that the indicating position of the pointer on the scale can be adjusted. When the pointer indication positions on the two clamps are the same, the two ends of the wire to be detected are respectively clamped at the pointer indication positions of the corresponding clamps. In this way, the to-be-detected wire can be vertically clamped between the two clamps, so that the detection accuracy can be improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tensile testing devices, specifically relating to a wire tensile testing device. Background Technology

[0002] Electric wires play an extremely important role in modern society. They are an indispensable basic material in various fields such as power, communication, and construction, providing reliable power transmission and signal communication for people's production and life.

[0003] In the overall performance testing of electrical wires, tensile testing is a crucial step in assessing their mechanical strength. Currently, some testing personnel still use traditional operating methods, visually fixing both ends of the wire between the two clamps of the tensile testing equipment. This method relies heavily on the subjective judgment and operational experience of the testing personnel. In actual operation, even with careful calibration, it is difficult to avoid slight tilting or displacement of the wire between the clamps due to visual errors and differences in operating techniques. When the wire is tilted, the load applied by the tensile testing equipment cannot be evenly distributed along the wire's axis. During actual stress testing, the tilted wire will generate component forces, causing some areas to experience stress far exceeding expectations, while other areas experience insufficient stress. This uneven stress distribution not only violates the standard requirements of tensile testing but also leads to significant deviations in the test data. Utility Model Content

[0004] The purpose of this invention is to provide a wire tensile testing device, aiming to solve the problem that some testers still use the traditional operating mode, fixing both ends of the wire between the two clamps of the tensile testing equipment by visual observation. This method relies heavily on the tester's subjective judgment and operating experience. In actual operation, even with careful calibration, it is difficult to avoid slight tilting or displacement of the wire between the clamps due to visual errors and differences in operating techniques. When the wire is tilted, the load applied by the tensile testing equipment cannot be evenly distributed along the wire's axis. During actual stress testing, the tilted wire will generate component forces, causing some areas to bear stress far exceeding expectations, while other areas will bear insufficient stress. This uneven force distribution not only violates the standard requirements of tensile testing but also causes significant deviations in the test data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wire tensile testing device, comprising a frame, an adjustment frame welded to the surface of the frame, a tensioner movably mounted on one side of the adjustment frame, a clamp mounted on the surface of the frame and the bottom of the tensioner, a movable plate movably mounted inside the clamp, and a screw threaded through one side of the clamp;

[0006] One end of the screw is welded to the inner ring of the bearing, and the outer ring of the bearing is fixedly fitted into the outer wall of one side of the movable column. An adjustment seat is welded to the top of the movable column. The screw, bearing and movable column are all movably installed in the recess, which is opened on the surface of the fixture.

[0007] In order to enable the movable column to drive the adjusting seat to move stably horizontally on the clamp, as a wire tensile testing device of this utility model, preferably, a guide bar is fixedly installed on the inner walls of the two sides near the top of the notch, the guide bar moves through both sides of the slide groove, the slide groove is opened on the outer walls of the two sides near the top of the movable column, the end of the movable column away from the bearing is fixedly connected to one end of the spring, and the other end of the spring is fixedly installed on the inner wall of the notch;

[0008] The distance between the two guide bars is less than the maximum diameter of the spring.

[0009] In order to enable the crossbar to accurately clamp the wire to be tested onto the fixture, as a wire tensile testing device of this utility model, preferably, the crossbar is threaded through one side of the adjusting seat, an installation sleeve is sleeved on one end of the crossbar, a pointer is glued to the lower vertical end of the installation sleeve, and a scale is embedded on the surface of the movable plate.

[0010] The bottom of the pointer is positioned vertically above the scale.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] When the wire to be tested needs to be vertically clamped between two clamps, adjust the horizontal bars on both clamps in sequence until the pointers on the horizontal bars point to the same number on the scale. The specific operation is as follows:

[0013] First, adjust the screw inwards towards the notch. This movement of the screw, via the bearing, pushes the movable column, which in turn moves the adjusting seat. The adjusting seat then moves the crossbar, thus adjusting the pointer's position on the scale. When the pointers on both clamps are at the same position, clamp both ends of the wire to be tested at the corresponding pointer positions on the clamps. This vertically clamps the wire between the two clamps, improving testing accuracy. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1This is a schematic diagram of the main view structure provided for an embodiment of this application.

[0016] Figure 2 This is a side view of the fixture structure provided in an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the fixture provided in an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of the mounting structure of the mounting sleeve provided in an embodiment of this application.

[0019] In the diagram: 1. Frame; 2. Adjusting frame; 3. Tensioner; 4. Clamp; 41. Notch; 42. Guide bar; 43. Slide groove; 5. Movable plate; 51. Scale; 6. Screw; 7. Bearing; 8. Movable column; 81. Spring; 9. Adjusting seat; 91. Crossbar; 92. Mounting sleeve; 93. Pointer. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 The present invention provides the following technical solution: a wire tensile strength testing device, including a frame 1, an adjustment frame 2 welded on the surface of the frame 1, a tensioner 3 movably installed on one side of the adjustment frame 2, a clamp 4 installed on the surface of the frame 1 and the bottom of the tensioner 3, a movable plate 5 movably installed inside the clamp 4, and a screw 6 threaded through one side of the clamp 4.

[0022] When in use, the wire to be tested is clamped between two clamps 4, and then the control switch on the frame 1 is turned on. The tensioner 3 will then drive the corresponding clamp 4 to move upward on the adjustment frame 2. When the wire to be tested is broken, the tensioner 3 will record the tension at the time of breakage, thereby measuring the maximum tension value of the wire to be tested.

[0023] One end of the screw 6 is welded to the bearing 7 in the inner ring of the bearing 7. The outer ring of the bearing 7 is fixedly fitted into the outer wall of the movable column 8. An adjusting seat 9 is welded to the top of the movable column 8. The screw 6, bearing 7 and movable column 8 are all movably installed in the recess 41, which is opened on the surface of the clamp 4.

[0024] Preferably, a guide bar 42 is fixedly installed on the inner walls of the two sides near the top of the recess 41. The guide bar 42 moves through both sides of the slide groove 43. The slide groove 43 is opened on the outer walls of the two sides near the top of the movable column 8. The end of the movable column 8 away from the bearing 7 is fixedly connected to one end of the spring 81. The other end of the spring 81 is fixedly installed on the inner wall of the recess 41.

[0025] The distance between the two guide bars 42 is less than the maximum diameter of the spring 81.

[0026] In practical use, when the screw 6 moves outward from the inside of the clamp 4 through the threaded structure between it and the clamp 4, the squeezing force of the movable column 8 on the spring 81 gradually decreases, and the spring 81 will then reset in time. When the spring 81 resets, it pushes the movable column 8 outward, making the backward movement of the movable column 8 easier.

[0027] When the movable column 8 moves, it will drive the sliding grooves 43 on both sides to move along the trajectory of the corresponding guide bar 42, thereby making the movement trajectory of the movable column 8 more stable.

[0028] The two guide bars 42 prevent the spring 81 from bending excessively upward when it contracts, so as to ensure that the spring 81 can stably provide lateral horizontal thrust;

[0029] Preferably: A crossbar 91 is threaded through one side of the adjusting seat 9, a mounting sleeve 92 is sleeved on one end of the crossbar 91, a pointer 93 is glued to the lower vertical end of the mounting sleeve 92, and a scale 51 is embedded on the surface of the movable plate 5.

[0030] The bottom of pointer 93 is vertically positioned above scale 51.

[0031] The mounting sleeve 92 is made of rubber and is fitted onto the crossbar 91 with an interference fit. The maximum stroke of the crossbar 91 is greater than the maximum travel of the movable plate 5.

[0032] During use, the pointer 93 on the mounting sleeve 92 can be adjusted to point to the scale 51 through later adjustments.

[0033] In practical use, when performing wire testing, to ensure the accuracy of the test results, the wire to be tested must be vertically clamped between the two clamps 4. The specific adjustment steps and principles are as follows:

[0034] First, slowly rotate the screw 6 clockwise to move it into the recess 41. As the screw 6 moves into the recess 41, the bearing 7 cooperates with the movable column 8. The bearing 7 reduces friction and ensures transmission stability, thereby pushing the movable column 8 to move smoothly along the preset track.

[0035] When the movable column 8 moves, it drives the adjusting seat 9 to move synchronously. The crossbar 91 mounted on the adjusting seat 9 is connected to the adjusting seat 9. When the adjusting seat 9 moves, the crossbar 91 also moves parallel to it, thereby changing the position of the pointer 93 on the scale 51. During this process, it is necessary to carefully observe the relative position of the pointer 93 and the scale 51. The pointer 93 can be made to point to the target scale as accurately as possible by adjusting the rotation angle of the screw 6. Repeat the above operation to make the same adjustment to the other clamp 4.

[0036] When the pointers 93 on both clamps 4 stably indicate the same numerical mark on the same scale 51, it indicates that the two clamps 4 have achieved precise vertical alignment. At this point, place both ends of the wire to be tested at the positions indicated by the pointers 93 on the corresponding clamps 4, and securely clamp the wire using the clamps 4. This adjustment method ensures that the wire to be tested is precisely and vertically clamped between the two clamps 4, providing a reliable foundation for subsequent testing and effectively improving the accuracy and reliability of the test results.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wire tensile testing device, comprising a frame (1), wherein an adjusting frame (2) is welded to the surface of the frame (1), a tensioner (3) is movably mounted on one side of the adjusting frame (2), and a clamp (4) is mounted on both the surface of the frame (1) and the bottom of the tensioner (3), wherein a movable plate (5) is movably mounted inside the clamp (4), characterized in that, A screw (6) is threaded through one side of the clamp (4); One end of the screw (6) is welded to the bearing (7) in the inner ring of the bearing (7). The outer ring of the bearing (7) is fixedly fitted into the outer wall of the movable column (8). An adjustment seat (9) is welded to the top of the movable column (8). The screw (6), bearing (7) and movable column (8) are all movably installed in the recess (41). The recess (41) is opened on the surface of the clamp (4).

2. The wire tensile strength testing device according to claim 1, characterized in that: A guide bar (42) is fixedly installed on the inner walls of the two sides near the top of the notch (41). The guide bar (42) moves through both sides of the slide groove (43). The slide groove (43) is opened on the outer walls of the two sides near the top of the movable column (8).

3. The wire tensile strength testing device according to claim 1, characterized in that: The end of the movable column (8) away from the bearing (7) is fixedly connected to one end of the spring (81), and the other end of the spring (81) is fixedly installed on the inner wall of the recess (41).

4. The wire tensile strength testing device according to claim 2, characterized in that: The distance between the two guide bars (42) is less than the maximum diameter of the spring (81).

5. The wire tensile strength testing device according to claim 1, characterized in that: A crossbar (91) is threaded through one side of the adjusting seat (9), and an mounting sleeve (92) is sleeved on one end of the crossbar (91). A pointer (93) is glued to the lower vertical end of the mounting sleeve (92).

6. The wire tensile strength testing device according to claim 1, characterized in that: A ruler (51) is fitted onto the surface of the movable plate (5).

7. The wire tensile strength testing device according to claim 5, characterized in that: The bottom of the pointer (93) is vertically positioned above the scale (51).

Images