Wire and cable tension testing device

Abstract

The utility model provides a wire and cable tension testing device, which relates to the technical field of cable tension testing and comprises a tension testing table, a testing push seat is movably connected below the tension testing table, a testing pull wheel is rotatably connected above the testing push seat through a bearing, and the axis of the testing pull wheel is perpendicular to the upper surface of the tension testing table. A pressure detector is fixedly connected to the lower portion of the test push seat, and a spiral push cylinder is connected to the lower surface of the tension test bench through screws, continuous detection of a cable is achieved, for a long cable, the cable does not need to be clamped many times, the detection efficiency of the cable is improved, and the cable tension detection device is suitable for tension detection of the cable with a certain length; the problems that a traditional cable testing mode is only suitable for testing a short cable, for testing an overlong cable, the cable needs to be clamped and subjected to tension testing for multiple times, the testing process is too tedious, and continuous testing of the whole long cable is not facilitated are solved.

Description

Technical Field

[0001] This utility model relates to the field of cable tensile testing technology, and in particular to a device for testing the tensile strength of wires and cables. Background Technology

[0002] In engineering applications, cables need to meet various requirements, especially in terms of tensile strength, which is mainly affected by factors such as laying length and environment. To ensure that cables meet usage requirements, construction quality, and operational stability, high standards are set for their tensile performance. Therefore, tensile testing of cables is one of the key points of cable quality inspection.

[0003] In traditional cable tensile testing, the two ends of the cable are fixed and a steadily increasing tensile force is applied to the cable. The state of the cable is observed at the set tensile force value. This traditional cable testing method is only suitable for testing short cables. For testing long cables, multiple clamping and tensile tests are required, which is too cumbersome and not conducive to continuous testing of long sections of cable. Utility Model Content

[0004] This disclosure relates to a wire and cable tensile testing device to address the problem that traditional cable testing methods are only suitable for testing shorter cables, while for testing longer cables, multiple clamping and tensile tests are required, making the testing process too cumbersome and unsuitable for continuous testing of long cable segments.

[0005] In a first aspect, this disclosure provides a tensile testing device for wires and cables, specifically comprising: a tensile testing platform; a test push base movably connected below the tensile testing platform; a test pull wheel rotatably connected above the test push base via a bearing; the axis of the test pull wheel being perpendicular to the upper surface of the tensile testing platform; a pressure detector fixedly connected below the test push base; a spiral push cylinder connected to the lower surface of the tensile testing platform via screws; the outer end of the push rod of the spiral push cylinder facing the pressure detector; a pressure display fixedly connected to the front of the tensile testing platform; the pressure display being connected to the pressure detector via an electrical connection wire; a cable pushing motor fixedly connected to the lower surface of the tensile testing platform via a bracket; two test clamping wheels rotatably connected above the tensile testing platform; the shaft of the cable pushing motor fixedly connected to the lower end of the axle of the front test clamping wheel; a fastening push cylinder connected to the upper surface of the tensile testing platform via screws; a reinforcing push frame fixedly connected to the right end of the push rod of the fastening push cylinder; and the reinforcing push frame movably connected to the tensile testing platform.

[0006] In at least some embodiments, an outer sliding groove is provided at the right end of the front edge and the rear edge of the tensile testing platform, and an inner sliding groove is provided on the tensile testing platform. The inner sliding groove is slidably connected to the axle of the test pull wheel, and a wire cylinder hook is welded to the front and the rear of the tensile testing platform, respectively.

[0007] In at least some embodiments, the test clamping wheel has a clamping wheel V-groove on its surface, and the axles of the two test clamping wheels are connected by a chain drive.

[0008] In at least some embodiments, the upper surface of the test pusher is provided with two pusher guide ports, and the two pusher guide ports are slidably connected to two lower guide rods respectively.

[0009] In at least some embodiments, the test puller has a puller V-groove with a "V" shaped cross-section on its surface.

[0010] In at least some embodiments, the front and rear ends of the reinforced pusher are respectively bent inward to form a pusher guide flange, and the pusher guide flange is slidably connected to the outer slide groove.

[0011] In at least some embodiments, the lower surface of the reinforced pusher is provided with two sets of clamping wheels, each set of clamping wheels has three anti-slip clamping wheels, and the anti-slip clamping wheel surface is provided with a "V" shaped groove.

[0012] This utility model provides a device for testing the tensile strength of wires and cables, which has the following advantages:

[0013] The cable testing device of this invention includes cable clamping and uniform speed conveying functions. During cable tensile testing, the cable between the two test clamping wheels and the two clamping wheel groups is clamped through the cooperation of two test clamping wheels and the clamping wheel groups, fixing both ends of the cable located above the tensile testing platform. The rotation of the test clamping wheels is limited by a chain to keep the cable spacing constant. A spiral pusher cylinder applies a thrust to the pressure detector, causing the test pusher and test pull wheel to move to the left, tightening the cable in the tested area. The tensile force value of the cable is displayed on the pressure display. When the pressure test of this section of cable is completed, the cable push motor drives the test clamping wheels to rotate. The two test clamping wheels rotate synchronously in the same direction under the action of chain drive, conveying the cable uniformly through the tensile testing platform and continuously monitoring it until the tensile test of the entire cable is completed. This achieves continuous cable testing. For longer cables, there is no need to clamp the cable multiple times, improving the cable testing efficiency. It is suitable for tensile testing of cables of a certain length. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram:

[0017] Figure 1A schematic diagram of the overall structure of this application is shown;

[0018] Figure 2 The structural diagram below this application is shown;

[0019] Figure 3 A schematic diagram of the tensile testing stand of this application is shown;

[0020] Figure 4 A schematic diagram of the anti-slip clamping wheel of this application is shown;

[0021] Figure 5 A schematic diagram of the structure of the test pusher of this application is shown;

[0022] Figure 6 A schematic diagram of the structure beneath the tensile testing platform of this application is shown.

[0023] List of reference numerals

[0024] 1. Tensile testing stand; 101. Outer slide groove; 102. Inner slide groove; 103. Lower guide rod; 104. Cable reel hook; 105. Test clamping wheel; 106. Clamping wheel V-groove; 2. Test push base; 201. Push base guide port; 3. Test pull wheel; 301. Pull wheel V-groove; 4. Pressure detector; 401. Pressure display; 5. Spiral push cylinder; 6. Cable push motor; 7. Fastening push cylinder; 8. Reinforced push frame; 801. Push frame guide flange; 802. Anti-slip clamping wheel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1: Please refer to Figures 1 to 6 :

[0027] This utility model discloses a tensile testing device for wires and cables, comprising: a tensile testing platform 1, a test pusher 2 movably connected below the tensile testing platform 1, a test pull wheel 3 rotatably connected above the test pusher 2 via a bearing, the axis of the test pull wheel 3 being perpendicular to the upper surface of the tensile testing platform 1, a pressure detector 4 fixedly connected below the test pusher 2, a spiral pusher 5 connected to the lower surface of the tensile testing platform 1 via screws, the outer end of the push rod of the spiral pusher 5 facing the pressure detector 4, a pressure display 401 fixedly connected to the front of the tensile testing platform 1, the pressure display 401 being connected to the pressure detector 4 via an electrical connection wire, a cable pushing motor 6 fixedly connected to the lower surface of the tensile testing platform 1 via a bracket, two test clamping wheels 105 rotatably connected above the tensile testing platform 1, and the shaft of the cable pushing motor 6 fixedly connected to the front end. The lower end of the axle of the test clamping wheel 105 is connected to the upper surface of the tensile test bench 1 by screws to a fastening push cylinder 7. The right end of the push rod of the fastening push cylinder 7 is fixedly connected to a reinforcing push frame 8, which is movably connected to the tensile test bench 1. Under normal conditions, the cable between the test clamping wheel 105 and the clamping wheel group is clamped by the cooperation of the two test clamping wheels 105 and the clamping wheel group, and the two ends of the cable located above the tensile test bench 1 are fixed. The pressure detector 4 is pushed to the left by the spiral push cylinder 5. The pressure detector 4 detects the pressure between the test push seat 2 and the spiral push cylinder 5, so that the pressure on the pressure detector 4 is equal to the tensile force borne by the cable. The measured tensile force value is displayed by the pressure display 401. By observing the state of the cable when the displayed pressure value of the pressure display 401 reaches the set cable tensile strength, the tensile strength of the cable can be tested.

[0028] In this embodiment, an outer groove 101 is provided at the right end of the front edge and the rear edge of the tensile testing platform 1, and an inner groove 102 is provided on the tensile testing platform 1. The inner groove 102 is slidably connected to the axle of the test pull wheel 3. A cable drum hook 104 is welded to the front and rear of the tensile testing platform 1, respectively. The cable drum can be suspended by the cable drum hook 104, which facilitates the storage and release of the cable.

[0029] In this embodiment of the present disclosure, a V-groove 106 is provided on the surface of the test clamping wheel 105, and the axles of the two test clamping wheels 105 are connected by chain drive; the V-groove 106 increases the contact area between the cable and the test clamping wheel 105, and reduces the slippage of the cable at the position of the test clamping wheel 105.

[0030] In this embodiment, the upper surface of the test pusher 2 is provided with two pusher guide ports 201, and the two pusher guide ports 201 are slidably connected to two lower guide rods 103 respectively, which play a guiding role and improve the movement stability of the test pusher 2. The test pull wheel 3 is provided with a pull wheel V groove 301 with a "V" shaped cross section on its wheel surface, so as to avoid the cable from coming off the test pull wheel 3 during the test process and causing unnecessary trouble.

[0031] In Example 2, based on Example 1, the front and rear ends of the reinforced push frame 8 are respectively bent inward to form a push frame guide flange 801, which is slidably connected to the outer slide groove 101. The lower surface of the reinforced push frame 8 is provided with two sets of clamping wheel groups, each set of clamping wheel groups has three anti-slip clamping wheels 802, and the anti-slip clamping wheels 802 have "V" shaped grooves on their surfaces. Under normal conditions, the reinforced push frame 8 is pulled to the left by the fastening push cylinder 7, so that the anti-slip clamping wheels 802 under the reinforced push frame 8 cooperate with the test clamping wheel 105 to clamp the cable, preventing the cable from slipping during the test. The anti-slip clamping wheels 802 are arranged in an arc shape, which can better fit with the cable in the test clamping wheel 105 and improve the positioning stability of the cable.

[0032] The working principle of this embodiment is as follows: First, the cable to be tested is installed. The fastening push cylinder 7 is extended, and the reinforcing push frame 8 is pushed to the right, causing the cable to pass around the two test clamping rollers 105 and the test pull roller 3. The fastening push cylinder 7 is then reset, and the reinforcing push frame 8 is pulled to the left to reset. The anti-slip clamping roller 802 under the reinforcing push frame 8 cooperates with the test clamping roller 105 to clamp the cable, preventing the cable from slipping during the test. The pressure detector 4 is pushed to the left by the spiral push cylinder 5. The pressure detector 4 detects the pressure between the test push base 2 and the spiral push cylinder 5, thus enabling pressure detection. The pressure on device 4 is equal to the tension on the cable. The measured tension value is displayed on pressure display 401. By observing the state of the cable when the pressure value displayed on pressure display 401 reaches the set cable tensile strength, the tensile strength of the cable can be tested. After testing a section of cable, the cable push motor 6 drives the two test clamping wheels 105 to rotate. Under the action of friction, the cable continuously flows through the tensile test bench 1 to participate in the test. After the test is completed, the fastening push cylinder 7 is extended, and the reinforcing push frame 8 is pushed to the right to remove the cable, thus completing the tensile test of the cable.

[0033] The following points should be noted in this article:

[0034] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0035] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A tensile testing device for electric wires and cables, comprising: A tensile testing stand (1) is characterized in that a test pusher (2) is movably connected below the tensile testing stand (1), a test puller (3) is rotatably connected above the test pusher (2) via a bearing, the axis of the test puller (3) is perpendicular to the upper surface of the tensile testing stand (1), a pressure detector (4) is fixedly connected below the test pusher (2), a spiral pusher (5) is connected to the lower surface of the tensile testing stand (1) via screws, the outer end of the push rod of the spiral pusher (5) faces the pressure detector (4), and a pressure display (401) is fixedly connected to the front of the tensile testing stand (1). The force display (401) is connected to the pressure detector (4) via an electrical connection cable. The lower surface of the tensile test bench (1) is fixedly connected to a cable push motor (6) via a bracket. Two test clamping wheels (105) are rotatably connected to the upper surface of the tensile test bench (1). The shaft of the cable push motor (6) is fixedly connected to the lower end of the wheel axle of the front test clamping wheel (105). The upper surface of the tensile test bench (1) is connected to a fastening push cylinder (7) via screws. The right end of the push rod of the fastening push cylinder (7) is fixedly connected to a reinforcing push frame (8). The reinforcing push frame (8) is movably connected to the tensile test bench (1).

2. The wire and cable tensile testing device according to claim 1, characterized in that, The tensile test stand (1) has an outer groove (101) at the right end of the front edge and the rear edge, and an inner groove (102) on the tensile test stand (1). The inner groove (102) is slidably connected to the axle of the test pull wheel (3). A wire canister hook (104) is welded to the front and rear of the tensile test stand (1).

3. The wire and cable tensile testing device according to claim 1, characterized in that, The test clamping wheel (105) has a clamping wheel V-groove (106) on its surface, and the axles of the two test clamping wheels (105) are connected by chain drive.

4. The wire and cable tensile testing device according to claim 1, characterized in that, The upper surface of the test pusher (2) is provided with two pusher guide ports (201), and the two pusher guide ports (201) are slidably connected to two lower guide rods (103).

5. The wire and cable tensile testing device according to claim 1, characterized in that, The test pull wheel (3) has a pull wheel V groove (301) with a "V" shaped cross section on its wheel surface.

6. The wire and cable tensile testing device according to claim 2, characterized in that, The front and rear ends of the reinforced pusher (8) are respectively bent inward to form a pusher guide flange (801), and the pusher guide flange (801) is slidably connected to the outer slide groove (101).

7. The wire and cable tensile testing device according to claim 6, characterized in that, The lower surface of the reinforced pusher (8) is provided with two sets of clamping wheel sets, each set of clamping wheel sets has three anti-slip clamping wheels (802), and the anti-slip clamping wheels (802) have "V" shaped grooves on their surfaces.

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