Device and method for detecting thickness and concentricity of cable insulating layer

Abstract

The invention relates to a device and method for detecting the thickness and concentricity of a cable insulation layer. The detection device comprises a rack; the circular guide rail is arranged on the rack, the circular guide rail is used for clamping a cable, and the circular guide rail can rotate relative to the rack; the detection assembly comprises an X-ray machine and a light sensing plate, the X-ray machine and the light sensing plate are both fixed to the rack, and the X-ray machine and the light sensing plate are arranged on the two sides of the circular guide rail respectively; wherein an X-ray emitting point of the X-ray machine is centered with the center of the photosensitive plate, and the central axis of the circular guide rail and X-rays emitted to the photosensitive plate by the X-ray machine are located on the same horizontal plane. According to the equipment and the method for detecting the thickness and the concentricity of the cable insulation layer, the thickness, the concentricity and the eccentricity of the cable insulation layer can be detected at 360 degrees, the equipment and the method can be suitable for cables with different diameters, and the problem that the cables cannot be detected at multiple angles is solved.

Description

Technical Field

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

[0002] In the cable production process, the thickness and eccentricity of the cable insulation layer are the main indicators that determine the quality of the cable. The cable X-ray detection device currently used is mainly composed of an X-ray machine and a photosensitive plate. The fixed X-ray machine and photosensitive plate can only detect the thickness and concentricity of the cable insulation layer from one angle. If the insulation layer thickness or eccentricity of each point on the circumference is to be detected, the relative angle between the X-ray machine, the photosensitive plate and the cable must be continuously changed.

[0003] Furthermore, existing X-ray detection devices are also limited to within the factory, and are difficult to carry if they need to be used in a different location. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the difficulty that the cable X-ray detection device in the prior art cannot detect cables from multiple angles, and to provide a device and a detection method for detecting the thickness and concentricity of the cable insulation layer, which can detect the thickness and concentricity of the cable insulation layer at 360°, thereby solving the problem that the cable cannot be detected from multiple angles.

[0005] In order to solve the above technical problems, the present invention provides a device for detecting the thickness and concentricity of the insulation layer of a cable, comprising:

[0006] frame;

[0007] A circular guide rail is arranged on the frame, the circular guide rail is used to clamp the cable, and the circular guide rail can rotate relative to the frame;

[0008] The detection assembly comprises: an X-ray machine and a photosensitive plate, wherein the X-ray machine and the photosensitive plate are both fixed on the frame, and the X-ray machine and the photosensitive plate are respectively arranged on both sides of the circular guide rail;

[0009] Wherein: the X-ray emission point of the X-ray machine is arranged in alignment with the center of the photosensitive plate, and the central axis of the circular guide rail and the X-ray emitted by the X-ray machine to the photosensitive plate are in the same horizontal plane.

[0010] In one embodiment of the present invention, the frame comprises:

[0011] The first mounting part includes two parallel mounting cross bars, each of which is provided with an annular fastener at a corresponding position, the circular guide rail is embedded in the annular fastener, the circular guide rail can rotate in the annular fastener, the annular fastener is provided with a locking hole, and a locking bolt capable of abutting against the circular guide rail is passed through the locking hole;

[0012] The second mounting part includes a mounting longitudinal rod, which is arranged at one end of the two mounting transverse rods and connects the two mounting transverse rods, and the X-ray machine is arranged on the mounting longitudinal rod;

[0013] The third mounting part includes a mounting frame, which corresponds to the mounting longitudinal rod and is arranged at the other ends of the two mounting cross bars to connect the two mounting cross bars. The photosensitive plate is arranged in the mounting frame.

[0014] In one embodiment of the present invention, an annular groove is formed on the outer circumference of the circular guide rail, and the annular fastener is embedded in the annular groove.

[0015] In one embodiment of the present invention, a plurality of clamping parts are provided on the circular guide rail, and the plurality of clamping parts cooperate to clamp and fix the cable.

[0016] In one embodiment of the present invention, the clamping portion comprises:

[0017] An adjusting block is protrudingly arranged on the circular guide rail, and a threaded hole is opened in the adjusting block;

[0018] An adjusting rod, threadedly connected to the threaded hole of the adjusting block, and the length of the adjusting rod extending into the adjusting block can be adjusted by rotating the adjusting rod;

[0019] A pressing sheet, arranged at the inner end of the adjusting rod, having an arc surface matching the cable;

[0020] The rubber pad is arranged on the arc surface of the pressing sheet and can abut against the cable.

[0021] In one embodiment of the present invention, a clamp is provided on the mounting longitudinal rod, the clamp is slidably disposed on the mounting longitudinal rod along the extension direction of the mounting longitudinal rod, and the X-ray machine is installed in the clamp.

[0022] In one embodiment of the present invention, the clamp comprises: two arc pieces, a connecting shaft is arranged at one end of the two arc pieces, and a locking pin is arranged at the other end of the two arc pieces.

[0023] In one embodiment of the present invention, a plurality of fixing blocks are arranged in the installation frame, the plurality of fixing blocks are respectively arranged on the side edges of the installation frame, and the plurality of fixing blocks clamp the photosensitive plate together.

[0024] In one embodiment of the present invention, the frame is formed by splicing profile bars, and two adjacent profile bars are connected by angle pieces.

[0025] In order to solve the above technical problems, the present invention also provides a method for detecting the thickness and concentricity of the insulation layer of a cable. The above-mentioned device for detecting the thickness and concentricity of the insulation layer of a cable is used to fix the cable in a circular guide rail, and the frame is controlled to rotate relative to the circular guide rail, so that the X-ray machine and the photosensitive plate rotate 360° around the cable, and each position on the circumference of the cable is detected.

[0026] The above technical solution of the present invention has the following advantages compared with the prior art:

[0027] The present invention discloses a device for detecting the thickness and concentricity of the insulation layer of a cable. A frame and a circular guide rail are arranged to rotate relative to each other. An X-ray machine and a photosensitive plate are respectively arranged on both sides of the frame corresponding to the circular guide rail. The arrangement positions of the circular guide rail, the X-ray machine and the photosensitive plate are controlled so that the X-ray emission point of the X-ray machine is aligned with the center of the photosensitive plate, and the central axis of the circular guide rail is controlled to be in the same horizontal plane as the X-ray emitted by the X-ray machine to the photosensitive plate. In this way, during the rotation of the frame, the circular guide rail does not move, and the X-ray machine and the photosensitive plate rotate 360 ​​degrees around the circular guide rail, so that the relative positions of the circular guide rail, the X-ray machine and the photosensitive plate remain unchanged, and only the relative angle changes, thereby realizing detection of different angles under the same detection conditions.

[0028] In actual use, when the cable is fixed and cannot be rotated, the cable is passed through and fixed on the circular guide rail. The rotating frame can detect the cable insulation thickness and concentricity insulation thickness and eccentricity 360°, solving the problem that the cable cannot be detected at multiple angles.

[0029] Furthermore, the device for detecting the thickness and concentricity of the insulation layer of a cable of the present invention has a simple structure, is easy to carry, and is convenient for off-site detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 It is a schematic diagram of the overall structure of the device for detecting the thickness and concentricity of the insulation layer of a cable according to the present invention;

[0032] Figure 2 It is a structural schematic diagram of the frame of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the circular guide rail of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the clamp of the present invention.

[0035] Explanation of the reference numerals in the drawings in the specification: 1. Frame; 11. Mounting cross bar; 12. Mounting longitudinal bar; 13. Mounting frame; 14. Angle piece; 2. Circular guide rail; 21. Annular groove; 22. Clamping part; 3. X-ray machine; 4. Photosensitive plate; 5. Annular fastener; 51. Locking hole; 6. Clamp; 61. Arc piece; 62. Connecting shaft; 63. Locking pin; 7. Fixing block. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0037] Example 1

[0038] Reference Figure 1 As shown, the present invention discloses a device for detecting the thickness and concentricity of the insulation layer of a cable, comprising: a frame 1 and a circular guide rail 2, wherein: the circular guide rail 2 is arranged on the frame 1, the circular guide rail 2 is used to clamp the cable, the circular guide rail 2 can rotate relative to the frame 1, and a detection component is arranged on the frame 1. When detecting the thickness and eccentricity of the insulation layer of the cable, an X-ray machine 3 and a photosensitive plate 4 are mainly used. The X-ray machine 3 is used to irradiate the cable from a fixed angle. The X-ray machine 3 uses the penetration ability of X-rays to detect the thickness and concentricity of the insulation layer inside the cable insulation layer, and the photosensitive plate 4 is used to capture the X-rays that penetrate the cable to form an image for analysis;

[0039] In the embodiment, the X-ray machine 3 and the photosensitive plate 4 are both fixed on the frame 1, and the X-ray machine 3 and the photosensitive plate 4 are respectively arranged on both sides of the circular guide rail 2. When the circular guide rail 2, the X-ray machine 3 and the photosensitive plate 4 are arranged, the X-ray emission point of the X-ray machine 3 is aligned with the center of the photosensitive plate 4, and the central axis of the circular guide rail 2 is controlled to be in the same horizontal plane as the X-ray emitted by the X-ray machine 3 to the photosensitive plate 4. During the rotation of the frame 1, the circular guide rail 2 does not move, and the X-ray machine 3 and the photosensitive plate 4 rotate 360° around the circular guide rail 2, so that the relative positions of the circular guide rail 2, the X-ray machine 3 and the photosensitive plate 4 remain unchanged, and only the relative angle changes, thereby realizing detection of different angles under the same detection conditions.

[0040] Reference Figure 2 As shown, the frame 1 includes: a first mounting portion, a second mounting portion and a third mounting portion, and the first mounting portion, the second mounting portion and the third mounting portion are used to install the circular guide rail 2, the X-ray machine 3 and the photosensitive plate 4 respectively.

[0041] The first mounting portion includes two parallel mounting cross bars 11, and an annular fastener 5 is provided at a corresponding position of each mounting cross bar 11, the circular guide rail 2 is embedded in the annular fastener 5, the annular fastener 5 supports the circular guide rail 2, and the circular guide rail 2 can rotate in the annular fastener 5;

[0042] Specifically, a locking hole 51 is provided on the annular fastener 5. During the detection process, when determining the insulation thickness and eccentricity of the cable at a certain angle or position, a locking bolt that can abut against the circular guide rail 2 is passed through the locking hole 51. When the locking bolt abuts against the circular guide rail, the relative position of the circular guide rail 2 and the annular fastener 5 can be fixed, so that stable detection at this angle or position can be achieved.

[0043] Specifically, the annular fastener 5 is formed by splicing two annular sheets, and both ends of the two annular sheets are detachably connected to the mounting cross bar 11. When assembling the circular guide rail 2 in the annular fastener 5, one annular sheet can be first connected to the mounting cross bar 11, and the circular guide rail 2 can be placed on the annular sheet. Then, the other annular sheet can be fastened, and the circular guide rail 2 can be embedded in the interior of the annular fastener 5.

[0044] The second mounting portion includes a mounting longitudinal rod 12, which is disposed at one end of the two mounting transverse rods 11 and connects the two mounting transverse rods 11, and the X-ray machine 3 is disposed on the mounting longitudinal rod 12;

[0045] Specifically, in order to install the X-ray machine 3 on the second mounting part, a clamp 6 is provided on the mounting longitudinal rod 12. In the present embodiment, two clamps 6 are used to clamp and fix the X-ray machine 3. During actual operation, the clamp 6 is slidably provided on the mounting longitudinal rod 12 along the extension direction of the mounting longitudinal rod 12 so as to adjust the center position of the X-ray machine 3 according to different models, so that the X-ray emission point of the X-ray machine 3 is aligned with the center of the photosensitive plate 4.

[0046] The third mounting portion includes a mounting frame, corresponding to the mounting longitudinal rod 12, and arranged at the other ends of the two mounting cross bars 11 to connect the two mounting cross bars 11. The photosensitive plate 4 is arranged in the mounting frame 13. In order to control the central axis of the circular guide rail 2 and the X-ray emitted by the X-ray machine 3 to the photosensitive plate 4 to be in the same horizontal plane, when the mounting frame 13 is arranged, the mounting cross bar 11 is connected to the side of the mounting frame 13 at the center position, and the mounting cross bar 11 is arranged to be perpendicular to the plane where the mounting frame 13 is located;

[0047] Specifically, in order to install the photosensitive plate 4 on the third mounting portion, a plurality of fixing blocks 7 are arranged in the mounting frame 13. The plurality of fixing blocks 7 are respectively arranged on the sides of the mounting frame 13. The plurality of fixing blocks 7 jointly clamp the photosensitive plate 4 to ensure the installation stability of the photosensitive plate 4 during rotation.

[0048] During the detection process, because the annular fastener 5 is connected to the mounting cross bar 11, that is, when the annular fastener 5 rotates relative to the circular guide rail 2, it can drive the entire frame 1 to rotate. When the circular guide rail 2 is used to clamp and fix the cable, the rotation of the frame 1 can drive the X-ray machine 3 and the photosensitive plate 4 to synchronously make circular motion around the outside of the cable.

[0049] Reference Figure 3 As shown, an annular groove 21 is provided on the outer periphery of the circular guide rail 2, and the annular fastener 5 is embedded in the annular groove 21. Through the limiting connection between the annular groove 21 and the annular fastener 5, it can be ensured that the annular groove 21 and the annular fastener 5 can rotate relative to each other and will not separate.

[0050] Specifically, the circular guide rail 2 is provided with a plurality of clamping parts 22, and the plurality of clamping parts 22 cooperate to clamp and fix the cable together. The clamping parts 22 are provided to adjust the clamping spacing, so as to meet the detection of cables of different types. For example, when the clamping parts 22 are actually provided, the clamping parts 22 can be provided to include: an adjusting block, an adjusting rod, a pressing piece and a rubber pad, wherein the adjusting block is protrudingly provided on the circular guide rail 2, a threaded hole is provided in the adjusting block, the adjusting rod is threadedly connected to the threaded hole of the adjusting block, and the adjusting rod is rotated to adjust the length of the adjusting rod extending into the adjusting block, the pressing piece is provided at the inner end of the adjusting rod, and the pressing piece is provided with an arc surface matching the cable, and the distance between the arc surface and the cable can be adjusted by the adjusting rod, so as to be suitable for fixing cables of different diameters, and the rubber pad is provided on the arc surface of the pressing piece, and the rubber pad can abut against the cable, and the elastic connection between the pressing piece and the cable is realized by the rubber pad, so as to reduce the extrusion damage to the cable caused by the pressing piece.

[0051] Reference Figure 4 As shown, the clamp 6 includes: two arc pieces 61, a connecting shaft 62 is provided at one end of the two arc pieces 61, and a locking pin 63 is provided at the other end of the two arc pieces 61. When installing the X-ray machine 3, the two arc pieces 61 are first opened, the X-ray machine 3 is placed on one of the arc pieces 61, and then the two arc pieces 61 are buckled around the connecting shaft 62, and locked and fixed by the locking pin 63, so as to achieve clamping and fixing of the X-ray machine 3.

[0052] Specifically, the rack 1 is formed by splicing profile rods, and two adjacent profile rods are connected by an angle piece 14. For example, the mounting cross bar 11 is formed by splicing two profile rods, and a ring fastener 5 is arranged between the two profile rods to connect the two profile rods. The mounting frame 13 is composed of four profile rods spliced ​​end to end. In this way, the entire rack 1 can be disassembled and spliced, with a simple structure, easy to carry, and convenient for off-site detection.

[0053] Example 2

[0054] On the basis of the above-mentioned embodiment 1, when the detection equipment of the present invention is actually used, generally, the cables are prepared in rolls and are also connected to the fixing parts when the cables are used. Therefore, the cables themselves are difficult to rotate. The detection equipment of the present invention is used to fix the cables in the circular guide rail 2, and the frame 1 is controlled to rotate relative to the circular guide rail 2, so that the X-ray machine 3 and the photosensitive plate 4 rotate 360° around the cable, and each position on the circumference of the cable is detected, so that the full-circle detection of the cable at a fixed angle can be achieved.

[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A device for detecting the thickness and concentricity of the insulation layer of a cable, characterized in that: include: frame; A circular guide rail is arranged on the frame, the circular guide rail is used to clamp the cable, and the circular guide rail can rotate relative to the frame; The detection assembly comprises: an X-ray machine and a photosensitive plate, wherein the X-ray machine and the photosensitive plate are both fixed on the frame, and the X-ray machine and the photosensitive plate are respectively arranged on both sides of the circular guide rail; Wherein: the X-ray emission point of the X-ray machine is arranged in alignment with the center of the photosensitive plate, and the central axis of the circular guide rail and the X-ray emitted by the X-ray machine to the photosensitive plate are in the same horizontal plane.

2. The device for detecting the thickness and concentricity of the cable insulation layer according to claim 1, characterized in that: The frame comprises: The first mounting part includes two parallel mounting cross bars, each of which is provided with an annular fastener at a corresponding position, the circular guide rail is embedded in the annular fastener, the circular guide rail can rotate in the annular fastener, the annular fastener is provided with a locking hole, and a locking bolt capable of abutting against the circular guide rail is passed through the locking hole; The second mounting part includes a mounting longitudinal rod, which is arranged at one end of the two mounting transverse rods and connects the two mounting transverse rods, and the X-ray machine is arranged on the mounting longitudinal rod; The third mounting part includes a mounting frame, which corresponds to the mounting longitudinal rod and is arranged at the other ends of the two mounting cross bars to connect the two mounting cross bars. The photosensitive plate is arranged in the mounting frame.

3. The device for detecting the thickness and concentricity of the cable insulation layer according to claim 2, characterized in that: An annular groove is formed on the outer circumference of the circular guide rail, and the annular fastener is embedded in the annular groove.

4. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 2, characterized in that: A plurality of clamping parts are arranged on the circular guide rail, and the plurality of clamping parts cooperate to clamp and fix the cable.

5. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 4, characterized in that: The clamping portion comprises: An adjusting block is protrudingly arranged on the circular guide rail, and a threaded hole is opened in the adjusting block; An adjusting rod, threadedly connected to the threaded hole of the adjusting block, and the length of the adjusting rod extending into the adjusting block can be adjusted by rotating the adjusting rod; A pressing sheet, arranged at the inner end of the adjusting rod, having an arc surface matching the cable; The rubber pad is arranged on the arc surface of the pressing sheet and can abut against the cable.

6. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 2, characterized in that: The mounting longitudinal rod is provided with a clamp, the clamp is slidably arranged on the mounting longitudinal rod along the extension direction of the mounting longitudinal rod, and the X-ray machine is installed in the clamp.

7. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 6, characterized in that: The clamp comprises: two arc pieces, a connecting shaft is arranged at one end of the two arc pieces, and a locking pin is arranged at the other end of the two arc pieces.

8. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 2, characterized in that: A plurality of fixing blocks are arranged in the installation frame, and the plurality of fixing blocks are respectively arranged on the side edges of the installation frame, and the plurality of fixing blocks clamp the photosensitive plate together.

9. The device for detecting the thickness and concentricity of the insulation layer of a cable according to claim 1, characterized in that: The frame is formed by splicing profile rods, and two adjacent profile rods are connected by angle pieces.

10. A method for detecting the thickness and concentricity of the insulation layer of a cable, characterized in that: Using the device for detecting the thickness and concentricity of the insulation layer of a cable as described in any one of claims 1 to 9 above, the cable is fixed in a circular guide rail, and the frame is controlled to rotate relative to the circular guide rail, so that the X-ray machine and the photosensitive plate rotate 360° around the cable to detect every position on the circumference of the cable.

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