Bending resistance test equipment for cables

Abstract

The bending resistance testing equipment applied to cables comprises: a base, a fixed block, a rotating block and a connecting seat; the two connecting seats are respectively fixedly connected to the fixed block and the rotating block; the fixed block and the rotating block are installed on the base; a flip electric push rod is arranged on the base; the output end of the flip electric push rod is fixedly connected to the rotating block to drive the rotating block to rotate; the fixed block and the rotating block are provided with a detection mechanism; the detection mechanism performs damage detection on the skin of the cables installed on the fixed block and the rotating block; the present invention arranges a detection block and a detection probe on a No. 1 arc block and a No. 2 arc block so that the detection probe contacts the skin of the cable, so when the cable is subjected to a bending test, the damage of the cable skin can be detected, thereby eliminating the need for manual monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of cable testing, and in particular to a bending resistance testing device used for cables. Background Art

[0002] The cable bending resistance test simulates the frequent bending of the cable in actual use to test its ability to withstand bending stress. The test usually uses a cable bending tester. Before the test, a cable sample of a certain length must be carefully prepared, and key parameters such as bending radius, angle, speed and number must be set according to relevant standards. During the test, one end of the cable sample is fixed, and the other end moves with the machine, repeating the bending action continuously.

[0003] The staff will closely observe whether the cable has abnormal phenomena such as sheath rupture, conductor exposure, insulation damage, etc. during the bending process; after the test, by measuring the change in outer diameter of the cable after the test, the conductor resistance and other data, and comparing them with the initial values, comprehensively judge whether the cable's anti-bending performance meets the standards;

[0004] The bending test of the cable usually takes a long time, and damage such as cable sheath and skin rupture requires visual inspection by staff, which requires staff to watch on the side, which creates limitations.

[0005] Therefore, we propose a bending resistance testing device for cables. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a bending resistance testing device for cables, which overcomes the deficiencies in the prior art and aims to solve the problems in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a bending resistance testing device for a cable, comprising:

[0008] A base, a fixed block, a rotating block and a connecting seat; the two connecting seats are respectively fixedly connected to the fixed block and the rotating block; the fixed block and the rotating block are installed on the base; a flip electric push rod is arranged on the base; the output end of the flip electric push rod is fixedly connected to the rotating block to drive the rotating block to rotate;

[0009] The fixed block and the rotating block are provided with detection mechanisms; the detection mechanisms detect damage to the skins of the cables installed on the fixed block and the rotating block.

[0010] Preferably, the detection mechanism includes a detection block, a detection pressure sensor and a detection probe; a sliding block is slidably connected to the fixed block and the rotating block, and a sliding motor is fixedly connected to the fixed block and the rotating block; a screw rod is fixedly connected to the output end of the sliding motor and is threadedly matched with the sliding block; an arc groove is provided on the sliding block; an arc block No. 1 is slidably connected in the arc groove; a surrounding motor is fixedly connected to the sliding block; an arc rack is fixedly connected to the arc block No. 1; a gear meshing with the arc rack is fixedly connected to the output end of the surrounding motor; the detection block is evenly fixedly connected to the arc block No. 1; the detection pressure sensor is fixedly connected in the detection block; the detection probe is slidably connected to the detection block; a detection spring is fixedly connected between the detection probe and the detection pressure sensor.

[0011] Preferably, a No. 2 arc block is hinged on the No. 1 arc block; the No. 2 arc block is also mounted with the detection pressure sensor, the detection probe and the detection block.

[0012] By arranging detection blocks and detection probes on the first arc block and the second arc block, the detection probes are in contact with the surface of the cable. Therefore, when the cable is subjected to a bending test, damage to the surface of the cable can be detected, thereby eliminating the need for manual monitoring.

[0013] Preferably, the first arc block and the second arc block are both slidably connected with a limiting block; the limiting block is fixed by bolts; and the front end of the limiting block is C-shaped.

[0014] Preferably, a rotating seat is rotatably connected to the base; the rotating block is rotatably connected to the rotating seat; the output end of the flip electric push rod is fixedly connected to the rotating seat; a revolving motor is fixedly connected to the rotating seat; and the output end of the revolving motor is fixedly connected to the rotating block.

[0015] Preferably, a telescopic slot is provided on the base; the fixed block is slidably connected in the telescopic slot; a telescopic electric push rod is fixedly connected in the telescopic slot; and the output end of the telescopic electric push rod is fixedly connected to the fixed block.

[0016] Preferably, connecting grooves are provided on both sides of the rotating block; connecting blocks are slidably connected in the connecting grooves; a snap-fitting groove is provided on the rotating seat; and the connecting block can be inserted into the snap-fitting groove for fixation.

[0017] By arranging limit blocks on the first arc block and the second arc block, the present invention can adjust the length and position of the bending part of the cable by changing the distance between the fixed block and the upper limit block of the rotating block, so that bending tests can be performed on different parts of the cable, thereby improving the use effect of the present invention.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention arranges detection blocks and detection probes on the first arc block and the second arc block so that the detection probes are in contact with the skin of the cable. Therefore, when the cable is subjected to a bending test, damage to the skin of the cable can be detected, thereby eliminating the need for manual monitoring.

[0020] The present invention sets limit blocks on the first arc block and the second arc block, so that the length and position of the bending part of the cable can be adjusted by changing the distance between the fixed block and the upper limit block of the rotating block, thereby being able to perform bending tests on different parts of the cable, thereby improving the use effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 for Figure 2 The enlarged view of point B in the middle;

[0024] Figure 4 It is a cross-sectional view of the rotating seat, the rotating block and the first arc block in the present invention;

[0025] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0026] Figure 6 It is a partial cross-sectional view of the rotating seat, the rotating block and the connecting block in the present invention.

[0027] In the figure: 1. base; 11. fixed block; 12. rotating block; 13. connecting seat; 14. flip electric push rod; 21. detection block; 22. detection pressure sensor; 23. detection probe; 24. sliding block; 25. sliding motor; 26. arc groove; 27. No. 1 arc block; 28. surround motor; 29. ​​arc rack; 3. gear; 31. detection spring; 4. No. 2 arc block; 41. limit block; 5. rotating seat; 51. turnover motor; 52. telescopic groove; 53. telescopic electric push rod; 54. connecting groove; 55. connecting block; 56. engaging groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: Refer to the attached specification Figure 1 , 2 , 3, 4 and 5, are used for testing the bending resistance of cables, including:

[0030] Base 1, fixed block 11, rotating block 12 and connecting seat 13; two connecting seats 13 are respectively fixedly connected to the fixed block 11 and the rotating block 12; the fixed block 11 and the rotating block 12 are installed on the base 1; a flip electric push rod 14 is arranged on the base 1; the output end of the flip electric push rod 14 is fixedly connected to the rotating block 12, driving the rotating block 12 to rotate;

[0031] The fixed block 11 and the rotating block 12 are provided with detection mechanisms, which detect damage to the skin of the cables installed on the fixed block 11 and the rotating block 12 .

[0032] In the present invention, the detection mechanism includes a detection block 21, a detection pressure sensor 22 and a detection probe 23; a sliding block 24 is slidably connected to the fixed block 11 and the rotating block 12, and a sliding motor 25 is fixedly connected to the fixed block 11 and the rotating block 12; a screw rod threadedly matched with the sliding block 24 is fixedly connected to the output end of the sliding motor 25; an arc groove 26 is provided on the sliding block 24; a first arc block 27 is slidably connected in the arc groove 26; a surrounding motor 28 is fixedly connected to the sliding block 24; an arc rack 29 is fixedly connected to the first arc block 27; a gear 3 meshing with the arc rack 29 is fixedly connected to the output end of the surrounding motor 28; the detection block 21 is evenly fixedly connected to the first arc block 27; the detection pressure sensor 22 is fixedly connected in the detection block 21; the detection probe 23 is slidably connected to the detection block 21; a detection spring 31 is fixedly connected between the detection probe 23 and the detection pressure sensor 22.

[0033] In the present invention, the first arc block 27 is hinged with the second arc block 4 ; the second arc block 4 is also installed with a detection pressure sensor 22 , a detection probe 23 and a detection block 21 .

[0034] In the present invention, an interface that can be plugged into the cable is provided on the connecting seat 13, and the interface is connected to the controller, so that the present invention can detect the resistance of the cable through the controller; the staff places the cable to be tested on the fixed block 11 and the rotating block 12, and engages the interfaces at both ends of the cable with the interfaces on the connecting seat 13, so that the cable is connected to the controller, and then the staff clamps the cable between the first arc block 27 and the second arc block 4, so that the detection probe 23 contacts the skin of the cable, and the first arc block 27 and the second arc block 4 are fixed by means of buckles or bolts, and the electric push rod 14 is turned over to push the rotating block 12 to rotate, so that the rotating block 12 turns over with the corresponding cable part, so as to perform a bending test on the cable, and at the same time, the two ends of the cable are connected to the controller, and a resistance test is performed at the same time to detect the change in resistance during the bending process;

[0035] When the rotating block 12 rotates back to its original position, the sliding motor 25 drives the sliding block 24 to move, so that the sliding block 24 moves along the cable with the arc block 27 and the arc block 4, and at the same time, the surrounding motor 28 drives the corresponding gear 3 to rotate, so that the arc block 27 and the arc block 4 rotate left and right, and rotate back and forth on the cable. Therefore, the detection probes 23 on the arc block 27 and the arc block 4 rotate around the cable skin while moving along the cable, so as to detect the cable skin. When the cable skin is damaged, the detection probe 23 will expand and contract in the detection block 21 when passing through the damaged part, so that the pressure transmitted to the detection pressure sensor 22 by the detection spring 31 changes, thereby detecting the damage of the cable skin;

[0036] The present invention arranges a detection block 21 and a detection probe 23 on the first arc block 27 and the second arc block 4 so that the detection probe 23 contacts the surface of the cable. Therefore, when the cable is subjected to a bending test, damage to the surface of the cable can be detected without the need for manual monitoring.

[0037] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 4 , 5 , and 6, in the present invention, the first arc block 27 and the second arc block 4 are both slidably connected to the limiting block 41; the limiting block 41 is fixed by bolts; the shape of the front end of the limiting block 41 is C-shaped.

[0038] In the present invention, a rotating seat 5 is rotatably connected to the base 1; a rotating block 12 is rotatably connected to the rotating seat 5; an output end of the flip electric push rod 14 is fixedly connected to the rotating seat 5; a revolving motor 51 is fixedly connected to the rotating seat 5; and an output end of the revolving motor 51 is fixedly connected to the rotating block 12.

[0039] In the present invention, a telescopic slot 52 is provided on the base 1 ; the fixed block 11 is slidably connected in the telescopic slot 52 ; a telescopic electric push rod 53 is fixedly connected in the telescopic slot 52 ; and the output end of the telescopic electric push rod 53 is fixedly connected to the fixed block 11 .

[0040] In the present invention, connecting grooves 54 are provided on both sides of the rotating block 12; connecting blocks 55 are slidably connected in the connecting grooves 54; a snap-fit ​​groove 56 is provided on the rotating seat 5; and the connecting block 55 can be inserted into the snap-fit ​​groove 56 for fixation.

[0041] In the present invention, the limiting block 41 is slidably connected at the front end of the first arc block 27 and the second arc block 4, and the position of the limiting block 41 on the first arc block 27 and the second arc block 4 is adjusted by sliding the limiting block 41. When the first arc block 27 and the second arc block 4 are closed, the front ends of the limiting blocks 41 on the first arc block 27 and the second arc block 4 are closed into a ring. When the rotating block 12 is turned over, the bending part of the cable is the part between the fixed block 11 and the upper limit block 41 of the rotating block 12. Therefore, by changing the distance between the fixed block 11 and the upper limit block 41 of the rotating block 12, the length and position of the bending part of the cable are adjusted, so that the bending test can be performed on different parts of the cable, thereby improving the use effect of the present invention.

[0042] In the present invention, the rotating block 12 is rotatably connected to the rotating seat 5, so that when the rotating block 12 is flipped, the rotary motor 51 drives the rotating block 12 to rotate, thereby being able to test the bending resistance of the cable in different bending states, thereby improving the use effect of the present invention;

[0043] In the present invention, the fixed block 11 is slidably connected to the base 1, and the position is adjusted by the telescopic electric push rod 53, so that it can be close to the rotating block 12 when the rotating block 12 rotates, so that more parts of the cable are wound. When the rotating block 12 rotates in the opposite direction, the fixed block 11 returns to its original position;

[0044] In the present invention, the rotating block 12 and the rotating seat 5 can be fixed by inserting the connecting block 55, so that when the rotating block 12 is turned over alone to test the bending resistance of the cable, the rotating block 12 is prevented from rotating on its own and affecting the test results;

[0045] The present invention sets a limit block 41 on the first arc block 27 and the second arc block 4, so that the present invention can adjust the length and position of the bending part of the cable by changing the distance between the fixed block 11 and the upper limit block 41 of the rotating block 12, thereby being able to perform bending tests on different parts of the cable, thereby improving the use effect of the present invention.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected; the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. The bending resistance test equipment used for cables is characterized by: include A base (1), a fixed block (11), a rotating block (12) and a connecting seat (13); the two connecting seats (13) are respectively fixedly connected to the fixed block (11) and the rotating block (12); the fixed block (11) and the rotating block (12) are mounted on the base (1); a flip electric push rod (14) is provided on the base (1); the output end of the flip electric push rod (14) is fixedly connected to the rotating block (12) to drive the rotating block (12) to rotate; The fixed block (11) and the rotating block (12) are provided with a detection mechanism; the detection mechanism performs damage detection on the surface of the cable installed on the fixed block (11) and the rotating block (12); The detection mechanism comprises a detection block (21), a detection pressure sensor (22) and a detection probe (23); a sliding block (24) is slidably connected to the fixed block (11) and the rotating block (12); a sliding motor (25) is fixedly connected to the fixed block (11) and the rotating block (12); a screw rod threadedly matched with the sliding block (24) is fixedly connected to the output end of the sliding motor (25); an arc groove (26) is provided on the sliding block (24); a first arc block (27) is slidably connected in the arc groove (26); a first arc block (27) is provided on the sliding block (24); A surrounding motor (28) is fixedly connected; an arc-shaped rack (29) is fixedly connected to the first arc-shaped block (27); a gear (3) meshing with the arc-shaped rack (29) is fixedly connected to the output end of the surrounding motor (28); the detection block (21) is evenly fixedly connected to the first arc-shaped block (27); the detection pressure sensor (22) is fixedly connected in the detection block (21); the detection probe (23) is slidably connected to the detection block (21); a detection spring (31) is fixedly connected between the detection probe (23) and the detection pressure sensor (22); The first arc block (27) is hingedly connected to the second arc block (4); the second arc block (4) is also mounted with the detection pressure sensor (22), the detection probe (23) and the detection block (21).

2. The bending resistance testing device for cables according to claim 1 is characterized in that: The first arc block (27) and the second arc block (4) are both slidably connected to a limit block (41); the limit block (41) is fixed by bolts; and the front end of the limit block (41) is C-shaped.

3. The bending resistance testing device for cables according to claim 2 is characterized in that: The base (1) is rotatably connected to a rotating seat (5); the rotating block (12) is rotatably connected to the rotating seat (5); the output end of the flip electric push rod (14) is fixedly connected to the rotating seat (5); a revolving motor (51) is fixedly connected to the rotating seat (5); and the output end of the revolving motor (51) is fixedly connected to the rotating block (12).

4. The bending resistance testing device for cables according to claim 3 is characterized in that: The base (1) is provided with a telescopic slot (52); the fixed block (11) is slidably connected in the telescopic slot (52); a telescopic electric push rod (53) is fixedly connected in the telescopic slot (52); and the output end of the telescopic electric push rod (53) is fixedly connected to the fixed block (11).

5. The bending resistance testing device for cables according to claim 4 is characterized in that: The rotating block (12) is provided with connecting grooves (54) on both sides; a connecting block (55) is slidably connected in the connecting groove (54); a snap-fitting groove (56) is provided on the rotating seat (5); and the connecting block (55) can be inserted into the snap-fitting groove (56) for fixation.

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