Cable detection equipment and method

Abstract

The invention discloses a cable detection device and method, and belongs to the technical field of cable detection. Cable detection equipment comprises a base, a vertical plate is fixedly connected to the base, the cable detection equipment further comprises a detector which is fixedly installed on the vertical plate, two side plates which are symmetrically arranged are transversely and slidably installed on the vertical plate, short pipes are rotatably connected to the two side plates, clamps are arranged in the two short pipes, and the clamps are connected with the detector. The output end of the detector is electrically connected with the two short pipes through wires. The reciprocating part is arranged on the vertical plate and is used for driving the two side plates to be indirectly close to or far away from each other; according to the invention, whether the resistance of the cable is stable in a reciprocating complete state can be detected, so that the detection precision of the cable is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a cable detection device and method. Background Art

[0002] Cable is an electric energy or signal transmission device, usually composed of several or several groups of twisted wires. Each group of wires is insulated from each other, and the entire cable is covered with a highly insulating covering layer. The cable has the characteristics of internal power conduction and external insulation. It is mainly used for high-voltage electric energy transmission in generation, distribution, transmission, transformation and power supply lines. It has the advantages of good conductivity, high temperature resistance and good toughness.

[0003] After the cable is produced, it is necessary to test the electrical properties of the cable. Generally, a section of the cable is cut for electrical testing. During the test, the cable needs to be fixed to the tester for testing. The tester is mainly used to detect the resistance, current and other data of the cable during use. However, the actual operating environment of the cable is more complicated, and the current testers are difficult to accurately test the cable. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult for a detector to accurately detect a cable, and to propose a cable detection device and method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cable detection device comprises a base, to which a vertical plate is fixedly connected, and also comprises: a detector fixedly mounted on the vertical plate, wherein two symmetrically arranged side plates are mounted on the vertical plate for transverse sliding, short tubes are rotatably connected to the two side plates, clamps are arranged in the two short tubes, and the output end of the detector is electrically connected to the two short tubes through a wire; a reciprocating part is arranged on the vertical plate, and the reciprocating part is used to drive the two side plates to indirectly approach and move away.

[0007] In order to allow the cable to be bent and straightened reciprocatingly, preferably, the reciprocating part includes a horizontal axis rotatably connected to the vertical plate, and a first reciprocating screw is fixedly installed at both ends of the horizontal axis, and the two side plates are respectively threadedly connected to the two first reciprocating screws, wherein a driving motor is fixedly installed on the vertical plate, and the output shaft of the driving motor is connected to the horizontal axis by two mutually meshing transmission gears.

[0008] In order to allow the bent cable to be twisted, preferably, the side plate is rotatably connected to a rotating rod via a support, a worm is fixedly mounted on the rotating rod, a worm wheel meshing with the worm is fixedly mounted on the short tube, and a rotating part for driving the worm to rotate is provided on the vertical plate.

[0009] In order to allow the short tube to rotate, the rotating part further includes a reel fixedly mounted on a rotating rod, a pull rope is fixedly wound around the outer wall of the reel, the end of the pull rope is fixedly connected to the vertical plate through a fixing seat, and a torsion spring is installed between the rotating rod and the support.

[0010] In order to facilitate fixing of both ends of the cable, preferably, the clamp comprises a slide groove arranged on the inner wall of the short tube, a clamping plate is slidably installed in the slide groove, and the clamping plate is elastically connected to the inner wall of the slide groove through an elastic member.

[0011] In order to improve the safety and convenience during the detection process, further, slide rails are fixedly installed on both sides of the vertical plate, a transparent cover is slidably installed between the two slide rails, and a telescopic airbag is fixedly installed on the side panel, wherein the elastic member is an elastic airbag, and the telescopic airbag is connected to the elastic member through a connecting tube, and when the transparent cover blocks the two side panels, the transparent cover will press the telescopic airbag.

[0012] In order to make the bending direction of the cable different each time, preferably, two symmetrically arranged protruding plates are slidably installed on the vertical plate, and the sliding direction of the protruding plates is perpendicular to the front end surface of the vertical plate. A telescopic part is provided on the vertical plate, and when the two side plates move away from each other, the telescopic part will drive the two protruding plates to slide in opposite directions.

[0013] In order to make the two convex plates extend out of the vertical plate in turn, the telescopic part further includes two second reciprocating screws rotatably connected to the vertical plate, the two second reciprocating screws are threadedly connected with push plates, the two convex plates are respectively fixedly connected to the two push plates, the two second reciprocating screws are connected by a chain drive, and one of the side plates is provided with a linkage part for driving the second reciprocating screw to rotate.

[0014] In order to enable the second reciprocating screw to rotate automatically, the linkage part further includes a cross bar fixedly connected to one of the side panels, the vertical plate is provided with a strip groove matching the cross bar, a rack is fixedly installed at the end of the cross bar, and a passive gear is installed on one of the second reciprocating screws through a one-way bearing, and when the two side panels are about to move away from the extreme position, the rack will engage with the passive gear.

[0015] A cable detection method, the operation steps are as follows:

[0016] Step 1: Fix both ends of the cable into two short tubes respectively;

[0017] Step 2: bend and straighten the cable back and forth;

[0018] Step 3: Twist the cable during the bending process;

[0019] Step 4: Make the cable bend in a different direction each time;

[0020] Step 5: Detect the resistance of the cable through a tester.

[0021] Compared with the prior art, the present invention provides a cable detection device, which has the following beneficial effects:

[0022] 1. The cable detection equipment will bend and straighten the cable back and forth through a short tube that moves back and forth to simulate the bending of the cable in actual use. During this period, the detector can detect whether the resistance of the cable is stable in the reciprocating state to improve the detection accuracy of the cable.

[0023] 2. The cable detection equipment drives the worm to rotate through the rotating rod, and the worm drives the short tube to rotate through the worm gear, and the short tube drives the end of the cable to rotate. Therefore, the cable will produce a twisting motion while bending, so that the cable can simulate a more complex usage state, thereby making the detection result of the detector more accurate.

[0024] 3. The cable detection equipment can realize the bending action of the cable in different directions through the reciprocating convex plate, so as to avoid the cable bending only to one side which is inconsistent with the actual situation, so as to significantly improve the detection accuracy of the detector for the cable.

[0025] 4. The cable detection device pushes the transparent cover upwards, inserts the two ends of the cable into two short tubes respectively, and then pushes the transparent cover downwards to reset it. Therefore, during the cable detection process, the transparent cover can isolate and protect the cable well, reducing the danger during the detection process.

[0026] 5. The cable detection equipment presses the telescopic airbag through the transparent cover, and the elastic part will expand and press the clamping plate. The clamping plate can automatically clamp the cable in the short tube, and the cable can be automatically fixed, so as to facilitate the cable detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the axonometric structure of a cable detection device proposed by the present invention;

[0028] Figure 2 A schematic diagram of the partial axonometric structure of a cable detection device proposed by the present invention Figure 1 ;

[0029] Figure 3 A schematic diagram of the partial axonometric structure of a cable detection device proposed by the present invention Figure 2 ;

[0030] Figure 4 A schematic diagram of the horizontal axis isometric structure of a cable detection device proposed by the present invention;

[0031] Figure 5 A schematic diagram of the axonometric structure of a side panel of a cable detection device proposed by the present invention Figure 1 ;

[0032] Figure 6 A schematic diagram of the axonometric structure of a side panel of a cable detection device proposed by the present invention Figure 2 ;

[0033] Figure 7 A schematic diagram of the short tube axonometric structure of a cable detection device proposed by the present invention;

[0034] Figure 8 This is a schematic diagram of the axonometric structure of a convex plate of a cable detection device proposed by the present invention.

[0035] In the figure: 1. base; 2. vertical plate; 3. detector; 4. side plate; 5. short tube; 6. wire; 7. horizontal axis; 8. first reciprocating screw; 9. driving motor; 10. transmission gear; 11. rotating rod; 12. worm gear; 13. worm; 14. reel; 15. pull rope; 16. fixed seat; 17. slide groove; 18. splint; 19. elastic member; 20. handle; 21. connecting pipe; 22. transparent cover; 23. slide rail; 24. telescopic airbag; 25. convex plate; 26. second reciprocating screw; 27. push plate; 28. chain drive; 29. ​​passive gear; 30. cross bar; 31. rack; 32. strip groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Embodiment 1:

[0039] Reference Figure 1-Figure 8A cable detection device includes a base 1, to which a vertical plate 2 is fixedly connected, and also includes: a detector 3 for detecting the resistance on the cable, which is fixedly installed on the vertical plate 2, and the detector 3 can be a multimeter, wherein two symmetrically arranged side plates 4 are installed on the vertical plate 2 for transverse sliding, and short tubes 5 are rotatably connected to the two side plates 4, and clamps are arranged in the two short tubes 5, and the output end of the detector 3 is electrically connected to the two short tubes 5 through a wire 6; a reciprocating part is arranged on the vertical plate 2, and the reciprocating part is used to drive the two side plates 4 to indirectly approach and move away.

[0040] Specifically, when in use, the two ends of the cable are respectively fixed in the two short tubes 5. At this time, the detector 3 can detect the resistance value of the cable through the two wires 6. During the detection, the reciprocating part can drive the two short tubes 5 to indirectly approach and move away. When the two short tubes 5 approach each other, the cable between the two short tubes 5 will bend. When the two short tubes 5 move away from each other, the cable between the two will be straightened and reset. Therefore, the short tubes 5 that reciprocate approaching and moving away will cause the cable to bend and straighten reciprocatingly to simulate the bending of the cable in actual use. During this period, the detector 3 can detect whether the resistance of the cable is stable in the reciprocating state to improve the detection accuracy.

[0041] In practice, when the tested cable is made of copper, the cross-sectional area of ​​the cable is 1 square millimeter, and the length of the cable is 1 meter, its resistance value is 0.01724 ohms. During the testing process, when the detected cable resistance value is much larger than 0.01724 ohms, the cable performance is judged to be poor. The larger the value, the worse it is, and the smaller the value, the better it is.

[0042] Embodiment 2:

[0043] Reference Figure 1 , Figure 2 as well as Figure 4 , which is basically the same as Example 1, and further discloses a specific implementation scheme of the reciprocating part.

[0044] The above-mentioned reciprocating part includes a horizontal axis 7 rotatably connected to the vertical plate 2, and first reciprocating screws 8 are fixedly installed at both ends of the horizontal axis 7. The two side plates 4 are respectively threadedly connected to the two first reciprocating screws 8, wherein a driving motor 9 is fixedly installed on the vertical plate 2, and the output shaft of the driving motor 9 is connected to the horizontal axis 7 through two mutually meshing transmission gears 10.

[0045] Specifically, during the detection period, the drive motor 9 is started, and the drive motor 9 will drive the horizontal axis 7 to rotate through two mutually meshing transmission gears 10, and the horizontal axis 7 will drive the first reciprocating screws 8 at both ends to rotate, and the two first reciprocating screws 8 will drive the two side plates 4 to indirectly approach and move away, and drive the two short tubes 5 to indirectly approach and move away. When the two short tubes 5 approach each other, the cable between the two short tubes 5 will bend, and when the two short tubes 5 move away from each other, the cable between the two short tubes 5 will be straightened and reset. Therefore, the short tubes 5 that reciprocate towards and away from each other will cause the cable to bend and straighten reciprocatingly to simulate the bending of the cable in actual use. During this period, the detector 3 can detect whether the resistance of the cable is stable in the reciprocating complete state to improve the detection accuracy.

[0046] Embodiment three:

[0047] Reference Figure 2 as well as Figure 4-Figure 6 , which is basically the same as the second embodiment, and further, a specific implementation scheme for rotating the upper short tube 5 is specifically added.

[0048] The side plate 4 is rotatably connected with a rotating rod 11 through a support, a worm 13 is fixedly mounted on the rotating rod 11, a worm wheel 12 meshing with the worm 13 is fixedly mounted on the short tube 5, and a rotating part for driving the worm 13 to rotate is provided on the vertical plate 2, the rotating part includes a drum 14 fixedly mounted on the rotating rod 11, a pull rope 15 is fixedly wound on the outer wall of the drum 14, and the end of the pull rope 15 is fixedly connected to the vertical plate 2 through a fixing seat 16, and a torsion spring is installed between the rotating rod 11 and the support.

[0049] Specifically, when the two short tubes 5 approach each other, the end of the pull rope 15 will be pulled by the fixed seat 16, and the pull rope 15 wound on the drum 14 will be gradually unloaded, and the drum 14 will rotate, and drive the worm 13 to rotate through the rotating rod 11, and the worm 13 will drive the short tube 5 to rotate through the worm gear 12, and the short tube 5 will drive the end of the cable to rotate, so that the cable will produce a twisting motion while bending, so that the cable can simulate a more complex usage state, thereby making the detection result of the detector 3 more accurate. When the two short tubes 5 move away from each other and reset, since a torsion spring is installed between the rotating rod 11 and the support, the rotating rod 11 will drive the worm 13 and the drum 14 to reverse and reset, and wind the pull rope 15 again.

[0050] Embodiment 4:

[0051] Reference Figure 1 as well as Figure 5-Figure 7 , which is basically the same as Example 3, and furthermore, specifically discloses a specific implementation scheme of the clamp.

[0052] The above-mentioned clamp includes a slide groove 17 arranged on the inner wall of the short tube 5, and a clamp 18 is slidably installed in the slide groove 17. The material of the clamp 18 and the short tube 5 is conductive material, such as copper. The clamp 18 is elastically connected to the inner wall of the slide groove 17 through an elastic member 19. Slide rails 23 are fixedly installed on both sides of the vertical plate 2, and a transparent cover 22 is slidably installed between the two slide rails 23. The material of the transparent cover 22 is acrylic plate or explosion-proof glass, and a handle 20 is installed on the transparent cover 22. A telescopic airbag 24 is fixedly installed on the side panel 4, wherein the elastic member 19 is an elastic airbag, and the telescopic airbag 24 is connected to the elastic member 19 through a connecting tube 21. When the transparent cover 22 blocks the two side panels 4, the transparent cover 22 will press the telescopic airbag 24.

[0053] Specifically, when the cable needs to be fixed, first push the transparent cover 22 upward, then insert the two ends of the cable into the two short tubes 5 respectively, and then push the transparent cover 22 downward to reset it. Therefore, during the cable detection process, the transparent cover 22 can isolate and protect the cable well, reducing the danger during the detection process. After the transparent cover 22 is pushed downward, the transparent cover 22 will press the telescopic airbag 24, and the telescopic airbag 24 will transport the internal air to the elastic member 19 through the connecting tube 21. The elastic member 19 will expand and press the clamping plate 18, and the clamping plate 18 can automatically clamp the cable in the short tube 5, and the cable can be automatically fixed, thereby facilitating the completion of the cable detection work.

[0054] Embodiment five:

[0055] Reference Figure 2 , Figure 3 as well as Figure 8 , which is basically the same as the fourth embodiment, and further, a specific implementation scheme for bending the cable in different directions is specifically added.

[0056] Two symmetrically arranged convex plates 25 are slidably mounted on the vertical plate 2. The shape of the convex plates 25 is semicircular. The sliding direction of the convex plates 25 is perpendicular to the front end surface of the vertical plate 2. A telescopic portion is provided on the vertical plate 2. When the two side plates 4 move away from each other, the telescopic portion drives the two convex plates 25 to slide in opposite directions. The telescopic portion includes two second reciprocating screws 26 rotatably connected to the vertical plate 2. The two second reciprocating screws 26 are both threadedly connected with push plates 27. The two convex plates 25 are fixedly connected to the two push plates 27 respectively. The second reciprocating screws 26 are connected by a chain drive 28, and a linkage part for driving the second reciprocating screw 26 to rotate is provided on one of the side plates 4, and the linkage part includes a cross bar 30 fixedly connected to one of the side plates 4, and a strip groove 32 cooperating with the cross bar 30 is provided on the vertical plate 2, and a rack 31 is fixedly installed at the end of the cross bar 30, and a passive gear 29 is installed on one of the second reciprocating screws 26 through a one-way bearing. When the two side plates 4 are about to move away from the extreme position, the rack 31 will mesh with the passive gear 29.

[0057] Specifically, when the cable is bent, one of the convex plates 25 will extend out of the front end surface of the vertical plate 2, so that the cable will be affected by the convex plate 25 and bend in the direction away from the convex plate 25. For example, when the upper convex plate 25 is extended, the cable will bend downward, and when the lower convex plate 25 is extended, the cable will bend upward. When the two side plates 4 move away from each other, the side plates 4 will drive the rack 31 to translate through the cross bar 30. When the two side plates 4 are about to move away from the extreme position, the cable will be completely straightened, and the rack 31 will begin to engage with the passive gear 29, and drive one of the second reciprocating screws 26 to rotate, and under the action of the chain drive 28, drive the two second reciprocating screws 26 to rotate synchronously, and the push plates on the two second reciprocating screws 26 27 will slide from one end to the other end, thereby driving the two convex plates 25 to slide synchronously, so that the other convex plate 25 will extend out of the front end surface of the vertical plate 2. When the cable bends again, the cable will be limited by the other convex plate 25 and bend to the other side, thereby realizing the bending action of the cable in different directions, avoiding the cable bending to only one side which is inconsistent with the actual situation, so as to significantly improve the detection accuracy of the detector 3 for the cable. Since the passive gear 29 is installed on the second reciprocating screw 26 through a one-way bearing, when the rack 31 pushes the passive gear 29 to rotate in the reverse direction, the passive gear 29 will not drive the second reciprocating screw 26 to reverse, and when the passive gear 29 rotates forward again, the push plate 27 will slide from one end of the second reciprocating screw 26 to the other end.

[0058] A cable detection method, the operation steps are as follows:

[0059] Step 1: Fix the two ends of the cable into two short tubes 5 respectively;

[0060] Step 2: bend and straighten the cable back and forth;

[0061] Step 3: Twist the cable during the bending process;

[0062] Step 4: Make the cable bend in a different direction each time;

[0063] Step 5: Detect the resistance of the cable through the detector 3.

[0064] When the present cable detection equipment is in use, the two ends of the cable are fixed to the two short tubes 5 respectively. At this time, the detector 3 can detect the resistance value of the cable through the two conducting wires 6. During the detection, the driving motor 9 is started. The driving motor 9 will drive the horizontal axis 7 to rotate through the two mutually meshing transmission gears 10. The horizontal axis 7 will drive the first reciprocating screws 8 at the two ends to rotate. The two first reciprocating screws 8 will drive the two side plates 4 to approach and move away indirectly, and drive the two short tubes 5 to approach and move away indirectly. When the two short tubes 5 approach each other, the cable between the two short tubes 5 will bend. When the two short tubes 5 move away from each other, the cable between the two short tubes 5 will be straightened and reset. Therefore, the reciprocating short tubes 5 that approach and move away will cause the cable to bend and straighten reciprocatingly to simulate the bending of the cable in actual use. During this period, the detector 3 can detect whether the resistance of the cable is stable in the reciprocating complete state to improve the detection accuracy.

[0065] When the two short tubes 5 approach each other, the end of the pull rope 15 will be pulled by the fixed seat 16, and the pull rope 15 wound on the drum 14 will be gradually unloaded, and the drum 14 will rotate, and drive the worm 13 to rotate through the rotating rod 11, and the worm 13 will drive the short tube 5 to rotate through the worm gear 12, and the short tube 5 will drive the end of the cable to rotate, so that the cable will produce a twisting motion while bending, so that the cable can simulate a more complex usage state, thereby making the detection result of the detector 3 more accurate. When the two short tubes 5 move away from each other and reset, since a torsion spring is installed between the rotating rod 11 and the support, the rotating rod 11 will drive the worm 13 and the drum 14 to reverse and reset, and wind the pull rope 15 again.

[0066] When the cable is bent, one of the convex plates 25 will extend out of the front end surface of the vertical plate 2, so that the cable will be affected by the convex plate 25 and bend in the direction away from the convex plate 25. For example, when the upper convex plate 25 is extended, the cable will bend downward, and when the lower convex plate 25 is extended, the cable will bend upward. When the two side plates 4 move away from each other, the side plates 4 will drive the rack 31 to translate through the cross bar 30. When the two side plates 4 are about to move away from the extreme position, the cable will be completely straightened, and the rack 31 will begin to mesh with the passive gear 29, and drive one of the second reciprocating screws 26 to rotate, and drive the two second reciprocating screws 26 to rotate synchronously under the action of the chain drive 28, and the push plates 27 on the two second reciprocating screws 26. It will slide from one end to the other end, thereby driving the two convex plates 25 to slide synchronously, so that the other convex plate 25 will extend out of the front end surface of the vertical plate 2. When the cable bends again, the cable will be limited by the other convex plate 25 and bend to the other side, thereby realizing the bending action of the cable in different directions, avoiding the cable bending to only one side which is inconsistent with the actual situation, so as to significantly improve the detection accuracy of the detector 3 for the cable. Since the passive gear 29 is installed on the second reciprocating screw 26 through a one-way bearing, when the rack 31 pushes the passive gear 29 to rotate in the reverse direction, the passive gear 29 will not drive the second reciprocating screw 26 to reverse, and when the passive gear 29 rotates forward again, the push plate 27 will slide from one end of the second reciprocating screw 26 to the other end.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable detection device, comprising a base (1), to which a vertical plate (2) is fixedly connected, characterized in that: Also includes: A detector (3) is fixedly mounted on the vertical plate (2). Wherein, two symmetrically arranged side plates (4) are installed on the vertical plate (2) for transverse sliding, and short tubes (5) are rotatably connected to the two side plates (4), and clamps are arranged inside the two short tubes (5), and the output end of the detector (3) is electrically connected to the two short tubes (5) through a wire (6); A reciprocating portion is arranged on the vertical plate (2), and is used to drive the two side plates (4) to indirectly move closer to and farther from each other.

2. A cable detection device according to claim 1, characterized in that: The reciprocating part comprises a transverse shaft (7) rotatably connected to the vertical plate (2), first reciprocating screws (8) are fixedly mounted on both ends of the transverse shaft (7), and the two side plates (4) are respectively threadedly connected to the two first reciprocating screws (8). Wherein, a driving motor (9) is fixedly mounted on the vertical plate (2), and the output shaft of the driving motor (9) is connected to the horizontal shaft (7) via two mutually meshing transmission gears (10).

3. A cable detection device according to claim 1, characterized in that: The side plate (4) is rotatably connected to a rotating rod (11) via a support, a worm (13) is fixedly mounted on the rotating rod (11), a worm wheel (12) meshing with the worm (13) is fixedly mounted on the short tube (5), and a rotating part for driving the worm (13) to rotate is provided on the vertical plate (2).

4. A cable detection device according to claim 3, characterized in that: The rotating part comprises a drum (14) fixedly mounted on a rotating rod (11), a pull rope (15) fixedly wound around the outer wall of the drum (14), an end of the pull rope (15) fixedly connected to the vertical plate (2) via a fixing seat (16), and a torsion spring installed between the rotating rod (11) and the support.

5. A cable detection device according to claim 1, characterized in that: The clamp comprises a slide groove (17) arranged on the inner wall of the short tube (5), a clamping plate (18) is slidably installed in the slide groove (17), and the clamping plate (18) is elastically connected to the inner wall of the slide groove (17) via an elastic member (19).

6. A cable detection device according to claim 5, characterized in that: Slide rails (23) are fixedly installed on both sides of the vertical plate (2), a transparent cover (22) is slidably installed between the two slide rails (23), and a telescopic airbag (24) is fixedly installed on the side plate (4). The elastic member (19) is an elastic airbag, the telescopic airbag (24) is connected to the elastic member (19) via a connecting tube (21), and when the transparent cover (22) covers the two side panels (4), the transparent cover (22) presses the telescopic airbag (24).

7. A cable detection device according to claim 1, characterized in that: Two symmetrically arranged protruding plates (25) are slidably mounted on the vertical plate (2), the sliding direction of the protruding plates (25) being perpendicular to the front end surface of the vertical plate (2), and a telescopic portion is provided on the vertical plate (2), and when the two side plates (4) move away from each other, the telescopic portion drives the two protruding plates (25) to slide in opposite directions.

8. A cable detection device according to claim 7, characterized in that: The telescopic part comprises two second reciprocating screws (26) rotatably connected to the vertical plate (2), the two second reciprocating screws (26) are both threadedly connected with push plates (27), the two convex plates (25) are respectively fixedly connected to the two push plates (27), the two second reciprocating screws (26) are connected via a chain drive (28), and one of the side plates (4) is provided with a linkage part for driving the second reciprocating screw (26) to rotate.

9. A cable detection device according to claim 8, characterized in that: The linkage part comprises a cross bar (30) fixedly connected to one of the side plates (4); a strip groove (32) cooperating with the cross bar (30) is provided on the vertical plate (2); a rack (31) is fixedly mounted on the end of the cross bar (30); a passive gear (29) is mounted on one of the second reciprocating screws (26) via a one-way bearing; when the two side plates (4) are about to move away from the extreme position, the rack (31) will mesh with the passive gear (29).

10. A cable detection method, comprising a cable detection device according to any one of claims 1 to 9, characterized in that: The steps are as follows: Step 1: Fix the two ends of the cable into two short tubes (5) respectively; Step 2: bend and straighten the cable back and forth; Step 3: Twist the cable during the bending process; Step 4: Make the cable bend in a different direction each time; Step 5: Detect the resistance of the cable using the detector (3).

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