A device and method for detecting thickness of cable insulation layer

Abstract

The present invention relates to the technical field of insulation layer measurement, and discloses a thickness detection device for cable insulation layer and a detection method thereof, comprising a base, wherein a first fixed block is fixedly connected to one side of the top of the base, a second fixed block is fixedly connected to a side of the base located near the middle of the first fixed block, a stretching block is installed on the side of the base located at the second fixed block away from the first fixed block, cables are placed on the first fixed block, the second fixed block and the stretching block, the exposed wire portion of the cable is located at the stretching block, and a first fixed auxiliary block is connected to one side of the first fixed block by a hinge. The present invention achieves 0.02mm-level high-precision measurement by adopting a combination of a main ruler and a sub-rule, meeting industrial standard requirements, the puncture needle and the main rod are synchronously positioned by the abutment block, and the zero scale is aligned in the initial state, ensuring consistency of the measurement reference and reducing human operation errors, and is easy to carry and can be measured at any time.

Description

Technical Field

[0001] The present invention relates to the technical field of insulation layer measurement, and more particularly to a device and method for detecting the thickness of a cable insulation layer. Background Art

[0002] The existing cable insulation thickness detection device mainly slices the cable to be tested, extracts the wires therein, or cuts and removes the wires, and then measures the insulation layer. The imaging method or other equipment required for measurement is used to obtain the thickness of the cable insulation layer. There is also a method of measuring after slicing.

[0003] Existing equipment is inconvenient to carry and has complex operation when measuring thickness. In addition, destructive testing is used during detection, and it is necessary to ensure that the tested wire is flush when cut. Therefore, the present invention provides a cable insulation thickness detection device and a detection method. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for detecting the thickness of a cable insulation layer and a detection method thereof, so as to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a device for detecting the thickness of a cable insulation layer and a detection method thereof, comprising a base, wherein one side of the top of the base is fixedly connected to a first fixed block, the base is located on a side of the first fixed block near the middle and is fixedly connected to a second fixed block, the base is located on a side of the second fixed block away from the first fixed block and a stretching block is installed, the first fixed block, the second fixed block and the stretching block are provided with a cable, the exposed wire portion of the cable is located at the stretching block, one side of the first fixed block is connected to a first fixed auxiliary block by a hinge, the top of the first fixed auxiliary block is fixedly connected to a first fixed top block, one side of the stretching block is connected to the stretching auxiliary block by a hinge, one side of the second fixed block is connected to the second fixed auxiliary block by a hinge, the top of the second fixed auxiliary block is fixedly connected to the second fixed top block, the middle part of the second fixed top block and the middle part of the second fixed block are at the same projection position, and the top of the second fixed auxiliary block is located away from the second fixed top block and is fixedly connected to a measuring block.

[0006] Furthermore, a main slot is provided on one side of the middle portion of the measuring block, and a secondary slot is provided on the other side of the measuring block. The main slot is movably connected to a main rod, and a puncture needle is movably connected in the secondary slot. The measuring block is provided with a secondary slot in the middle of the secondary slot, and return slots are provided on both sides of the secondary slot of the measuring block. The return slot is provided with a steering slot on the side away from the secondary slot. A puncture thread is provided on the side of the middle end of the puncture needle near the bottom end, and the maximum diameter of the puncture thread is larger than the diameter of the puncture needle. The secondary slot is movably connected to the puncture thread on the puncture needle, and the puncture The puncture thread of the needle is located at the auxiliary slot and clamping blocks are installed on both sides. The clamping block is provided with a half-thread groove in the middle of one side of the puncture thread. The two half-thread grooves of the clamping blocks are merged and threadedly connected to the puncture thread of the puncture needle. The clamping block is fixedly connected to the puncture auxiliary block on the side close to the return slot. The clamping block is movably connected to the return slot through the puncture auxiliary block. The outer wall of the puncture auxiliary block is movably sleeved with a return clamping spring, one end of the return clamping spring is fixedly connected to the clamping part of the puncture auxiliary block, and the other end is fixedly connected to the bottom of the groove on the side of the return slot close to the clamping block.

[0007] Furthermore, the two return clamping springs both control the puncture sub-blocks to move in the direction of the puncture thread, and the puncture needle is located on the side of the return slot away from the sub-slot and is provided with a steering groove, and a steering wheel is installed in the steering groove, and a clamping rod is movably connected to the top side of the measuring block, and the bottom end of the clamping rod is fixedly connected to a positioning clamping block, and the measuring block is located at the bottom end of the positioning clamping block and is provided with a clamping groove. When the clamping rod presses the knob, the positioning clamping block will be clamped into the clamping groove at the bottom, and when the clamping rod is lifted and the knob is turned, the positioning clamping block will be disengaged from the clamping groove at the bottom and can rotate freely. The two The outer wall of the steering wheel is provided with a tensioning rope, one end of the two tensioning ropes is fixedly connected to the middle part of one side of the nearest puncture sub-block, and the other end of the two tensioning ropes is fixedly connected to one side of the upper part of the positioning block of the clamping rod. When the clamping rod rotates, the tensioning rope will transmit the tension through the steering wheel to pull the clamping block toward the direction of the steering wheel; the puncture needle is located at the top of the measuring block and is movably connected with equidistantly arranged rings, and the equidistantly arranged rings are fixedly connected to the sub-ruler, the top of the puncture needle is fixedly connected to the puncture knob, and the bottom end of the main slot is provided with a main slot.

[0008] Furthermore, the outer wall of the bottom end of the main rod is fixedly connected to a main clamping block in the main clamping slot, the top of the main rod is fixedly connected to the outer wall of the measuring block, and the bottom end of the main rod is fixedly connected to the second fixed auxiliary block. In the initial state, after the secondary ruler is rotated at the same height, they are located on the same horizontal line as the main ruler, and the zero scale line is aligned. At this time, the middle of the bottom end of the block is at the same horizontal height as the needle tip of the puncture needle.

[0009] Furthermore, the second fixed top block is provided with a return groove in the middle of the second clamping slot, and the second fixed top block is provided with an extrusion groove at the bottom end of the return groove. The internal structure of the first fixed top block and the second fixed top block is the same, that is, both are provided with a return groove and an extrusion groove, the top end of the first fixed block is provided with a first clamping slot, the top end of the second fixed block is provided with a second clamping slot, a first claw groove is provided in the second clamping slot, and a clamping slot pad is fixedly connected in the second clamping slot, the clamping slot pad is affixed to the second clamping slot, and a downward pressing component is movably connected in the return groove, and the downward pressing component includes a claw block, the top end of the claw block is fixedly connected to a clamping rod, the outer wall of the clamping rod is movably sleeved with a first return spring, the bottom end of the claw block is fixedly connected to the first claw pad, and the clamping rod is movably engaged with the return groove. The cam is engaged with the first latch and the second latch is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the first and second latches, and the cam is engaged with the

[0010] The top end of the first fixing block is fixedly connected to the first fixing side block at the other side of the hinge, and the second fixing auxiliary block is fixedly connected to the second fixing side block at the other side of the hinge, the middle of the first fixing side block is movably clamped with the first fixing screw, and the middle of the second fixing side block is movably clamped with the second fixing screw, and the bottom end of the first fixing screw is provided with a first fixing thread, and the bottom end of the second fixing screw is provided with a second fixing thread. The top of the base and the bottom end of the second fixing screw are provided with a first fixing groove, and the base is provided with a second fixing groove at the bottom end of the second fixing thread, and the first fixing auxiliary block is threadedly connected to the top end of the first fixing block through the hinge and the first fixing thread at the bottom end of the first fixing screw of the first fixing side block and the first fixing groove to tightly fit with the top end of the second fixing block, and the second fixing auxiliary block is threadedly connected to the top end of the second fixing block through the hinge and the second fixing thread at the bottom end of the second fixing screw of the second fixing side block and the second fixing groove to tightly fit with the top end of the second fixing block.

[0011] Furthermore, a stretching return groove is provided in the middle of the stretching auxiliary block, a stretching pressure groove is provided at the bottom of the stretching return groove, a stretching rod is installed in the stretching return groove, the stretching rod is movably clamped with the stretching return groove, the outer wall of the stretching rod is movably sleeved with a second return spring, the bottom end of the stretching rod is fixedly connected to the top of the second return spring, the bottom end of the second return spring is fixedly connected to the bottom end of the stretching return groove, a stretching groove is provided at the top of the stretching block, a second claw groove is provided in the stretching groove, a second claw pad is installed in the stretching groove, the bottom end of the stretching rod and the outside of the stretching pressure groove are fixedly connected with a stretching claw, the claw of the stretching claw is movably connected to the second claw groove, the stretching block and the stretching auxiliary block are fixedly connected by a buckle, the bottom end of the stretching block is fixedly connected with a movable card block, and a movable thread groove is provided in the middle of the movable card block.

[0012] Furthermore, the base is provided with a pulling groove at the position of the movable card block, and the base is provided with a through groove at one end away from the first fixed groove, the through groove is connected with the pulling groove, and a rotating rod is movably connected in the through groove, and the rotating rod is provided with a tightening thread on one side of the pulling groove, and the rotating rod is fixedly connected with a handle on the outside of the base, and the tightening thread is threadedly connected to the movable thread groove of the movable card block. A battery is installed in the stretching auxiliary block, and a warning light is installed on the top of the measuring block on the side close to the second fixed screw, one end of the warning light is connected to the puncture needle, that is, the part where the puncture thread touches the secondary groove, and the other end of the warning light is connected to the battery of the stretching auxiliary block through a wire, and the battery of the stretching auxiliary block is connected to the exposed wire of the cable through the stretching claw. When the puncture needle pierces the insulation layer of the cable, a closed loop is formed, so that the warning light lights up.

[0013] A detection method for a device for detecting the thickness of a cable insulation layer, comprising the following steps:

[0014] S1. When it is necessary to test a polyvinyl chloride insulated cable, the cable is first placed in the first fixing block, the second fixing block and the stretching block, ensuring that the exposed wire portion of the cable is located at the stretching block. The first fixing top block is flipped over, and the first fixing thread of the first fixing screw is pressed into the first fixing groove. The first fixing screw is tightened so that the first return spring in the first fixing top block pulls the top end of the clamping rod back to the bottom end of the return groove, thereby causing the claw block to press the insulation layer of the cable. When the first fixing screw cannot rotate;

[0015] S2. At this time, the stretching auxiliary block of the stretching block is closed and locked with a buckle. At this time, the stretching claw compacts the wire end of the cable tightly through the second return spring, and the rotating rod starts to rotate. When the handle is rotated, the threaded connection between the thread and the movable thread groove is tightened, resulting in the stretching block being pulled in the direction of the handle when the handle is rotated, causing the wire end of the cable to be stretched, causing the cable to be straightened. Since the insulation layer of the cable has not been pulled, the insulation layer remains unchanged. If the wire of the cable is thicker, then when the handle is rotated, that is, when the stretching claw and the wire of the cable produce a friction sound, the handle is stopped at this time, indicating that the maximum stretching force has been reached. If the cable is a thinner wire, the wire at the top of the second slot of the second fixed block is observed to see if it is straightened. If it is straightened, it can also be considered that the standard has been met.

[0016] S3. At this time, the second fixing auxiliary block begins to be closed. When the second fixing auxiliary block is closed, the second fixing thread of the second fixing screw is inserted into the second fixing groove by pressing. At this time, the second fixing screw is tightened, so that the first return spring in the second fixing top block pulls the top of the clamping rod back to the bottom end of the return groove, so that the claw block presses the insulation layer of the cable. At this time, the main rod is lowered. When the main rod is lowered, the block stops falling after contacting the wire. At this time, the puncture needle is also slowly lowered. As the puncture needle stops being lowered, it means that the puncture needle has contacted the insulation layer of the cable, piercing a small amount of insulation layer of the cable at the needle tip of the puncture needle or not piercing it. At this time, part of the puncture thread is located at the auxiliary clamping slot. At this time, the clamping rod is lowered After lifting up and releasing, the return clamping spring releases the deformation energy, pulling the puncture sub-block back, so that the clamping blocks merge. At this time, the puncture thread is located by slowly turning the puncture knob of the puncture needle, so that the puncture thread slowly rotates and punctures in the area where the semi-thread grooves of the clamping block merge, which will cause the needle tip of the puncture needle to slowly pierce the insulation layer of the cable until the needle tip of the puncture needle touches the top of the wire of the cable, which will form a closed circuit between the wire of the cable, the stretching claw, the prompt light, and the puncture thread and the battery of the stretching auxiliary block, causing the prompt light to light up. At this time, it means that the insulation thickness of the cable has been measured. At this time, the zero scale of the sub-scale is aligned with the main scale by rotating the sub-scale. After reading the value pointed to by the zero scale of the sub-scale, the thickness of the cable can be obtained by calculation.

[0017] S4. After the measurement is completed, it is necessary to enter the contact and fixed state. At this time, the puncture needle is rotated in the opposite direction so that the needle tip of the puncture needle leaves the second card slot. Then, the stretching auxiliary block is contacted with the buckle of the stretching block, and the second fixing screw and the first fixing screw are released. The cable can be taken out and the device can be carried for testing at any time next time.

[0018] Technical effects and advantages of the present invention:

[0019] 1. This invention utilizes a main and auxiliary ruler to achieve high-precision measurements at the 0.02mm level, meeting industry standards. The puncture needle and main rod are synchronously positioned by a stopper, and the zero scale is aligned in the initial state, ensuring consistent measurement datums and reducing human error. The device is also easy to carry, allowing measurements to be taken at any time.

[0020] 2. This invention combines claws with silicone pads. The spring-loaded claws adapt to cables of varying diameters. The silicone material provides flexible contact pressure, balancing securing force with anti-slip protection. Furthermore, the three-stage slot structure—the first, second, and tensioning blocks—coordinates to ensure precise alignment of the cable axis with the measuring component.

[0021] 3. This invention uses a puncture needle-wire contact-triggered indicator light circuit to provide instant electronic feedback of physical contact, preventing over-puncture that could damage the wire or inadequate measurement. The puncture needle, through a clamping block threaded pair, achieves micron-level feed, avoiding measurement deviations caused by impact puncture.

[0022] 4. This invention utilizes a larger diameter puncture thread than the needle body, providing both a mechanical stop to prevent over-puncture and a circuit-continuity indicator to ensure operational safety. This innovative mechanical design, combined with electromechanical integration, addresses industry challenges such as low measurement efficiency, high cost of ultrasonic testing equipment, and irreversible destructive testing through slicing. It is particularly suitable for applications such as power inspections and cable manufacturing quality inspections, demonstrating significant technological advancement and commercial application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 Open the schematic diagram for the overall structure of the present invention.

[0025] Figure 3 It is an exploded schematic diagram of the overall structure of the present invention.

[0026] Figure 4 It is an exploded schematic diagram of the downward pressing component structure of the present invention.

[0027] Figure 5 This is an exploded schematic diagram of the tensile claw structure of the present invention.

[0028] Figure 6 It is a schematic diagram of the main rod and puncture needle structure of the present invention.

[0029] Figure 7 This is a schematic structural diagram of the stretching auxiliary block of the present invention.

[0030] Figure 8 It is a schematic structural diagram of the puncture needle of the present invention.

[0031] Figure 9 For the present invention Figure 8 Schematic diagram of the structure of the clamping block.

[0032] Figure 10 It is a schematic diagram of the cross-sectional structure of the second fixed top block and the measuring block after explosion of the present invention.

[0033] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point A in the middle.

[0034] Figure 12 It is a schematic diagram of the cross-sectional structure of the second fixed top block and the measuring block of the present invention.

[0035] Figure 13 For the present invention Figure 12 Schematic diagram of the structure at point B.

[0036] Figure 14 It is a schematic diagram of the base structure of the present invention.

[0037] Figure 15 It is a schematic diagram of the cross-sectional structure of the stretching block of the present invention.

[0038] The accompanying drawings are marked as follows: 1. Base; 101. Pull groove; 1011. Through groove; 102. First fixing groove; 103. Second fixing groove; 2. First fixing block; 201. First clamping groove; 202. First fixing auxiliary block; 203. First fixed top block; 204. First fixed side block; 2041. First fixing screw; 2042. First fixing thread; 3. Second fixing block; 301. Second clamping groove; 3011. First claw groove; 30111. Clamping groove Pad; 302, second fixed auxiliary block; 303, second fixed top block; 3031, return groove; 3032, extrusion groove; 304, second fixed side block; 3041, second fixed screw; 3042, second fixed thread; 305, pressing assembly; 3051, claw block; 30511, first claw pad; 3052, clamping rod; 3053, first return spring; 4, stretching block; 401, stretching groove; 4011, second claw pad; 4012, first Second claw groove; 402, stretching auxiliary block; 4021, stretching return groove; 4022, stretching pressure groove; 403, stretching claw; 4031, stretching rod; 4032, second return spring; 404, moving clamping block; 4041, moving thread groove; 5, measuring block; 501, main groove; 5011, main clamping groove; 502, auxiliary groove; 5021, auxiliary clamping groove; 5022, return clamping groove; 5023, steering groove; 6, main rod; 601, main clamping block; 602, Main ruler; 603, stop block; 7, puncture needle; 701, ring sleeve; 702, auxiliary ruler; 703, puncture knob; 704, puncture thread; 705, clamping block; 7051, half thread groove; 7052, puncture auxiliary block; 7053, return clamping spring; 7054, steering wheel; 7055, tensioning rope; 706, clamping rod; 7061, positioning clamping block; 707, warning light; 8, rotating rod; 801, tensioning thread; 802, grip; 9, cable. DETAILED DESCRIPTION

[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The thickness detection device for the cable insulation layer and the detection method thereof involved in the present invention are not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] Reference Figure 1 and Figure 2The present invention provides a device for detecting the thickness of a cable insulation layer and a detection method thereof, comprising a base 1, wherein a first fixed block 2 is fixedly connected to one side of the top of the base 1, a second fixed block 3 is fixedly connected to the side of the base 1 located near the middle of the first fixed block 2, a stretching block 4 is installed on the side of the base 1 located on the second fixed block 3 away from the first fixed block 2, a cable 9 is placed on the first fixed block 2, the second fixed block 3 and the stretching block 4, the exposed wire portion of the cable 9 is located at the stretching block 4, one side of the first fixed block 2 is connected to a first fixed auxiliary block 202 by a hinge, the top of the first fixed auxiliary block 202 is fixedly connected to a first fixed top block 203, and one side of the stretching block 4 is connected to a stretching auxiliary block 40 by a hinge. 2. One side of the second fixed block 3 is connected to the second fixed auxiliary block 302 by a hinge, and the top of the second fixed auxiliary block 302 is fixedly connected to the second fixed top block 303. The middle of the second fixed top block 303 is in the same projected position as the middle of the second fixed block 3. The second fixed auxiliary block 302 is located at the top of the side away from the second fixed top block 303 and is fixedly connected to the measuring block 5. A main groove 501 is provided on one side of the middle of the measuring block 5, and a secondary groove 502 is provided on the other side of the measuring block 5. The main groove 501 is movably connected to the main rod 6, and the puncture needle 7 is movably connected in the secondary groove 502. The measuring block 5 is provided with a secondary slot 5021 in the middle of the secondary slot 502, and both sides of the secondary slot 5021 of the measuring block 5 are provided with There is a return card slot 5022, and the return card slot 5022 is located on the side away from the auxiliary card slot 5021 and is provided with a turning groove 5023. A puncture thread 704 is provided on the side near the bottom of the middle end of the puncture needle 7. The maximum diameter of the puncture thread 704 is larger than the diameter of the puncture needle 7. The auxiliary groove 502 is movably connected with the puncture thread 704 on the puncture needle 7. The puncture thread 704 of the puncture needle 7 is located at the auxiliary card slot 5021. Both sides are equipped with clamping blocks 705. The clamping blocks 705 are located in the middle of one side of the puncture thread 704 and are provided with a half-thread groove 7051. The half-thread grooves 7051 of the two clamping blocks 705 are combined and threadedly connected to the puncture thread 704 of the puncture needle 7. The clamping block 705 is located near the return card slot One side of the slot 5022 is fixedly connected to a puncture sub-block 7052, and the clamping block 705 is movably connected to the return slot 5022 through the puncture sub-block 7052. The outer wall of the puncture sub-block 7052 is movably sleeved with a return clamping spring 7053, one end of the return clamping spring 7053 is fixedly connected to the clamping portion of the puncture sub-block 7052, and the other end is fixedly connected to the bottom of the return slot 5022 close to the clamping block 705. The two return clamping springs 7053 both control the puncture sub-block 7052 to move in the direction of the puncture thread 704. The puncture needle 7 is located on the side of the return slot 5022 away from the auxiliary slot 5021 and is provided with a steering groove 5023, and a steering wheel 7054 is installed in the steering groove 5023.The top side of the measuring block 5 is movably connected with a card rod 706, and the bottom end of the card rod 706 is fixedly connected with a positioning card block 7061. The measuring block 5 is provided with a card slot at the bottom end of the positioning card block 7061. When the card rod 706 presses the knob, the positioning card block 7061 will be stuck in the card slot at the bottom. When the card rod 706 lifts the knob, the positioning card block 7061 will be disengaged from the card slot at the bottom and can rotate freely. The outer walls of the two steering wheels 7054 are provided with tensioning ropes 7055, one end of the two tensioning ropes 7055 are fixedly connected to the middle of one side of the nearest puncture sub-block 7052, and the other end of the two tensioning ropes 7055 are fixedly connected to one side of the upper part of the positioning card block 7061 of the card rod 706. When 06 rotates, the tensioning rope 7055 transmits the tension through the steering wheel 7054 to pull the clamping block 705 in the direction of the steering wheel 7054; the top of the puncture needle 7 is movably connected with the equidistantly arranged ring sleeves 701 at the top of the measuring block 5, and the equidistantly arranged ring sleeves 701 are fixedly connected to the auxiliary scale 702, and the top of the puncture needle 7 is fixedly connected with the puncture knob 703, and the bottom end of the main groove 501 is provided with a main card slot 5011, and the outer wall of the bottom end of the main rod 6 is fixedly connected with the main card block 601 in the main card slot 5011, the top of the main rod 6 is fixedly connected with the main scale 602 at the outer wall of the measuring block 5, and the bottom end of the main rod 6 is fixedly connected with the second fixed auxiliary block 302. After the secondary ruler 702 is rotated at the same height, it is located at the same horizontal line as the main ruler 602, and the zero scale line is aligned. At this time, the middle of the bottom end of the block 603 is at the same horizontal height as the needle tip of the puncture needle 7. The main ruler 602 is a high-precision centimeter ruler with a maximum measuring range of 6cm. The secondary ruler 702 is a high-precision millimeter ruler. Each scale line of the secondary ruler 702 is 0.98mm, the total measuring range is 49mm, and there are 50 scales. The maximum measuring range scale line of the secondary ruler 702 is aligned with the 49mm of the main ruler 602. The second fixed top block 303 is located in the middle of the second card slot 301 and is provided with a return slot 3031. The second fixed top block 303 is located at the bottom end of the return slot 3031 and is provided with an extrusion slot 3032. The first fixed top block 203 and the second fixed top block 303 have the same internal structure, that is, both are provided with a return groove 3031 and an extrusion groove 3032. The top of the first fixed block 2 is provided with a first card slot 201, and the top of the second fixed block 3 is provided with a second card slot 301. The second card slot 301 is provided with a first claw groove 3011. The second card slot 301 is fixedly connected with a card slot pad 30111, and the card slot pad 30111 is fitted with the second card slot 301. The return groove 3031 is movably connected with a pressing component 305, and the pressing component 305 includes a claw block 3051. The top of the claw block 3051 is fixedly connected with a clamping rod 3052, and the outer wall of the clamping rod 3052 is movably sleeved with a first return spring 3053.The bottom end of the claw block 3051 is fixedly connected with the first claw pad 30511, the clamping rod 3052 is movably clamped with the return groove 3031, the top of the first return spring 3053 is fixedly connected with the clamping end of the clamping rod 3052, the bottom end of the first return spring 3053 is fixedly connected with the bottom end of the return groove 3031, the first return spring 3053 pulls the claw block 3051 toward the second clamping groove 301 to be squeezed, the claw block 3051 is fitted with the first claw pad 30511, the claw block 3051 is movably connected with the first claw groove 3011, the claw of the claw block 3051 can enter the first claw groove 3011, the structure of the first clamping groove 201 is consistent with the second clamping groove 301 The structures of the two are all identically set, and are both provided with a card slot pad 30111 and a first claw groove 3011. The first fixed top block 203 is provided with the same pressing component 305 structure as that in the second fixed top block 303, that is, the first fixed top block 203 is also provided with a claw block 3051, a connecting rod 3052, and a first return spring 3053, and the connection relationship is the same, wherein the claw block 3051 and the first claw pad 30511 of the first fixed top block 203 are mirrored with the claw block 3051 and the first claw pad 30511 of the second fixed top block 303. The top end of the first fixed auxiliary block 202 is located on the other side of the hinge and is fixedly connected to the first fixed side block 204. The second fixed auxiliary block 302 is located on the other side of the hinge and is fixedly connected There is a second fixed side block 304, the middle part of the first fixed side block 204 is movably connected to the first fixed screw 2041, the middle part of the second fixed side block 304 is movably connected to the second fixed screw 3041, the bottom end of the first fixed screw 2041 is provided with a first fixed thread 2042, the bottom end of the second fixed screw 3041 is provided with a second fixed thread 3042, the top of the base 1 and the bottom end of the second fixed screw 3041 are provided with a first fixed groove 102, the base 1 is provided with a second fixed groove 103 at the bottom end of the second fixed thread 3042, the first fixed auxiliary block 202 is connected to the first fixed screw 2041 of the first fixed side block 204 by a hinge and the first fixed thread 2042 at the bottom end of the first fixed screw The second fixing block 302 is threadedly connected to the first fixing groove 102 to fit tightly with the top of the first fixing block 2. The second fixing auxiliary block 302 is threadedly connected to the second fixing groove 103 through a hinge and the second fixing thread 3042 at the bottom of the second fixing screw 3041 of the second fixing side block 304 to fit tightly with the top of the second fixing block 3. A stretching return groove 4021 is provided in the middle of the stretching auxiliary block 402, and a stretching pressure groove 4022 is provided at the bottom of the stretching return groove 4021. A stretching rod 4031 is installed in the stretching return groove 4021. The stretching rod 4031 is movably engaged with the stretching return groove 4021. The outer wall of the stretching rod 4031 is movably sleeved with a second return spring 4032.The bottom end of the stretching rod 4031 is fixedly connected to the top of the second return spring 4032, and the bottom end of the second return spring 4032 is fixedly connected to the bottom end of the stretching return groove 4021. The top of the stretching block 4 is provided with a stretching groove 401, and a second claw groove 4012 is provided in the stretching groove 401. A second claw pad 4011 is installed in the stretching groove 401. The bottom end of the stretching rod 4031 is fixedly connected to the outside of the stretching pressure groove 4022 with a stretching claw 403, and the claw of the stretching claw 403 is movably connected to the second claw groove 4012. The stretching block 4 is fixedly connected to the stretching auxiliary block 402 by a buckle, and the bottom end of the stretching block 4 is fixedly connected to a moving card block 404. The moving card block 404 A movable thread groove 4041 is provided in the middle of the base 1, a pulling groove 101 is provided at the position of the movable card block 404, a through groove 1011 is provided at the end of the base 1 away from the first fixed groove 102, the through groove 1011 is connected with the pulling groove 101, and a rotating rod 8 is movably connected in the through groove 1011, and the rotating rod 8 is provided with a tightening thread 801 on one side of the pulling groove 101. The rotating rod 8 is located on the outside of the base 1 and is fixedly connected to a handle 802, and the tightening thread 801 is threadedly connected to the movable thread groove 4041 of the movable card block 404. A battery is installed in the stretching auxiliary block 402, and the top of the measuring block 5 is located on the side close to the second fixed screw 3041 and is equipped with a warning light 70 7. One end of the indicator light 707 is connected to the puncture needle 7, that is, the part where the puncture thread 704 touches the auxiliary groove 502, and the other end of the indicator light 707 is connected to the battery of the stretching auxiliary block 402 through a wire, and the battery of the stretching auxiliary block 402 is connected to the exposed wire of the cable 9 through the stretching claw 403. When the puncture needle 7 pierces the insulation layer of the cable 9, a closed loop is formed, so that the indicator light 707 lights up. Due to the arc-shaped structure of the first card slot 201, the second card slot 301 and the stretching groove 401, the center of the cable 9 after being straightened coincides with the center of the first card slot 201, the second card slot 301 and the stretching groove 401, and the main rod 6 and the puncture needle 7 are also located in the center, which naturally leads to accurate measurement. The second The claw pad 4011, the slot pad 30111 and the first claw pad 30511 are all made of silicone. When straightened, the insulation layer of the cable 9 is not pulled, resulting in no change in the insulation layer. It depends on the actual situation. If the wire of the cable 9 is thicker, then when the handle 802 is rotated, the wire of the cable 9 cannot be moved, that is, when the stretching claw 403 and the wire of the cable 9 produce a friction sound, then the handle 802 is stopped at this time, indicating that the maximum stretching force has been reached. If the cable 9 is a thinner wire, then by observing whether the wire at the top of the second slot 301 of the second fixing block 3 is straightened, if it is straightened, it can also be considered that the standard has been met. It should be explained that when straightening, a corresponding stretching method should be formulated according to the thickness of the cable to be measured.If the thickness of the insulation layer is more than 3mm, the stretching can be judged by directly pulling it out and making a sound.

[0041] Working principle of the present invention:

[0042] When it is necessary to test the polyvinyl chloride insulated cable, i.e., cable 9, first place the cable 9 in the first fixing block 2, the second fixing block 3, and the stretching block 4, ensuring that the exposed wire portion of the cable 9 is located at the stretching block 4. At this time, after the first fixing top block 203 is flipped over, the first fixing thread 2042 of the first fixing screw 2041 is passed into the first fixing groove 102 by pressing, and the first fixing screw 2041 is tightened, so that the first return spring in the first fixing top block 203 is 3053 pulls the top of the clamping rod 3052 back to the bottom of the return groove 3031, so that the claw block 3051 presses the insulation layer of the cable 9. At this time, due to the silicone material of the claw block 3051, it can fit with the insulation layer of the cable 9 to improve the tightness of the pressing. When the first fixing screw 2041 cannot be rotated, it means that the pressing component 305 of the first fixed top block 203 has fixed the cable 9 located at the first fixed block 2. At this time, the stretching auxiliary block 402 of the stretching block 4 is closed and the mounting plate is used. The buckle is locked, and at this time, the stretching claw 403 compacts the wire end of the cable 9 tightly through the second return spring 4032, and the rotating rod 8 starts to rotate. When the handle 802 is rotated, the threaded connection between the thread 801 and the movable thread groove 4041 is tightened, resulting in the handle 802 being rotated, and the stretching block 4 is pulled toward the direction of the handle 802. As the movement progresses, the wire end of the cable 9 is stretched, and as the stretching progresses, the cable 9 is straightened. At the same time, when it is straightened, The insulation layer of the cable 9 is not pulled, resulting in no change in the insulation layer. The tension is determined according to the actual situation. If the conductor of the cable 9 is relatively thick, when the handle 802 is rotated, the conductor of the cable 9 cannot be moved, that is, when the tension claw 403 and the conductor of the cable 9 produce a friction sound, then the rotation of the handle 802 is stopped, indicating that the maximum tension has been reached. If the cable 9 is relatively thin, the conductor at the top of the second slot 301 of the second fixing block 3 is observed to see if it is straightened. If so, it can also be considered that the standard has been met.

[0043] At this time, the second fixing auxiliary block 302 begins to be closed. When the second fixing auxiliary block 302 is closed, the second fixing thread 3042 of the second fixing screw 3041 is passed into the second fixing groove 103 by pressing. At this time, the second fixing screw 3041 is tightened, so that the first return spring 3053 in the second fixing top block 303 pulls the top of the clamping rod 3052 back to the bottom of the return groove 3031, so that the claw block 3051 presses the insulation layer of the cable 9. At this time, the main rod 6 is lowered. When the main rod 6 is lowered, it stops because the stop block 603 contacts the wire. When the puncture needle 7 stops lowering, it means that the puncture needle 7 has touched the insulation layer of the cable 9 and punctured a small amount of insulation layer of the cable 9 at the needle tip of the puncture needle 7, or has not punctured it. At this time, part of the puncture thread 704 is located at the auxiliary card slot 5021. At this time, after the card rod 706 is lifted and released, the return clamping spring 7053 releases the deformation energy, and the puncture auxiliary block 7052 is pulled back, so that the clamping block 705 is merged. At this time, the puncture thread 704 is located at the auxiliary card slot 5021. The puncture knob 703 of 7 causes the puncture thread 704 to slowly rotate and puncture in the area where the half-thread groove 7051 of the clamping block 705 merges, which causes the needle tip of the puncture needle 7 to slowly puncture the insulation layer of the cable 9 until the needle tip of the puncture needle 7 contacts the top of the wire of the cable 9, which forms a closed circuit between the wire of the cable 9, the stretching claw 403, the prompt light 707, the puncture thread 704 and the battery of the stretching auxiliary block 402, thereby causing the prompt light 707 to light up, indicating that the insulation thickness of the cable 9 has been measured. At this time, by rotating the secondary ruler 702 to The zero scale obtained is aligned with the main scale 602. First, read the value pointed to by the zero scale of the secondary scale 702, and then read the scale line on the secondary scale 702 that is aligned with the scale line on the main scale 602. a+b×0.02=h, where a is the value pointed to by the zero scale of the secondary scale 702 on the main scale 602, and b is the number of scale lines between the scale line aligned with the main scale 602 and the zero scale line of the secondary scale 702. 0.02mm means that each scale line on the secondary scale 702 represents 0.02mm on the main scale 602. The thickness h of the cable 9 can be obtained by calculation.

[0044] After the measurement is completed, it is necessary to enter the contact and fixed state. At this time, the puncture needle 7 is rotated in the opposite direction so that the needle tip of the puncture needle 7 leaves the second slot 301. Then, the stretching auxiliary block 402 is contacted with the buckle of the stretching block 4, and the second fixing screw 3041 and the first fixing screw 2041 are released. The cable 9 can be taken out and the device can be carried for testing at any time next time.

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for detecting the thickness of a cable insulation layer, characterized in that: The cam is secured to a position 56° to the left of the base and secured to a location where the cam is secured. The top of the measuring block is movably connected with equidistantly arranged rings, and the equidistantly arranged rings are fixedly connected to the secondary ruler. The outer wall of the bottom end of the main rod is fixedly connected to the main clamping block in the main clamping groove. The top of the main rod is fixedly connected to the outer wall of the measuring block. The bottom end of the main rod is fixedly connected to the second fixed auxiliary block. In the initial state, after the secondary ruler rotates at the same height, they are on the same horizontal line with the main ruler, and the zero scale line is aligned. At this time, the middle of the bottom end of the block is at the same horizontal height as the needle tip of the puncture needle, and the bottom of the stretching block is fixedly connected to the main ruler. The end is fixedly connected to a mobile card block, the middle of the mobile card block is provided with a mobile thread groove, a battery is installed in the stretching auxiliary block, the top of the measuring block is located on the side close to the second fixed screw and an indicator light is installed, one end of the indicator light is connected to the puncture needle, that is, the part where the puncture thread touches the auxiliary groove, the other end of the indicator light is connected to the battery of the stretching auxiliary block through a wire, and the battery of the stretching auxiliary block is connected to the exposed wire of the cable through the stretching claw. When the puncture needle pierces the insulation layer of the cable, a closed circuit is formed, so that the indicator light lights up.

2. The device for detecting the thickness of a cable insulation layer according to claim 1, wherein: The measuring block is provided with a secondary slot in the middle of the secondary slot, and return slots are provided on both sides of the secondary slot of the measuring block. The return slot is provided with a turning slot on the side away from the secondary slot. A puncture thread is provided on the side of the middle end of the puncture needle near the bottom end. The maximum diameter of the puncture thread is larger than the diameter of the puncture needle. The secondary slot is movably connected with the puncture thread on the puncture needle. Clamping blocks are installed on both sides of the puncture thread of the puncture needle at the secondary slot. The clamping block is located on the puncture screw. A half-thread groove is provided in the middle part of one side of the pattern, and the half-thread grooves of the two clamping blocks are merged and threadedly connected to the puncture thread of the puncture needle. The clamping block is fixedly connected to the puncture sub-block on the side close to the return card slot, and the clamping block is movably clamped with the return card slot through the puncture sub-block. The outer wall of the puncture sub-block is movably sleeved with a return clamping spring, one end of the return clamping spring is fixedly connected to the clamping part of the puncture sub-block, and the other end is fixedly connected to the bottom of the groove on the side of the return card slot close to the clamping block.

3. The device for detecting the thickness of a cable insulation layer according to claim 2, characterized in that: The two return clamping springs both control the puncture auxiliary block to move in the direction of the puncture thread, and the puncture needle is located on the side of the return slot away from the auxiliary slot and is provided with a steering groove, and a steering wheel is installed in the steering groove, and a card rod is movably connected to the top side of the measuring block, and the bottom end of the card rod is fixedly connected to a positioning card block, and the measuring block is provided with a card slot at the bottom end of the positioning card block, and when the card rod presses the knob, the positioning card block will be stuck in the card slot at the bottom end, and when the card rod lifts the knob, the positioning card block will be The clamping block is separated from the bottom slot and can rotate freely. The outer walls of the two steering wheels are provided with tensioning ropes, one end of the two tensioning ropes is fixedly connected to the middle part of one side of the nearest puncture sub-block, and the other end of the two tensioning ropes is fixedly connected to one side of the upper part of the positioning block of the clamping rod. When the clamping rod rotates, the tensioning rope will transmit the tension through the steering wheel to pull the clamping block toward the direction of the steering wheel. The top end of the puncture needle is fixedly connected to the puncture knob, and the bottom end of the main slot is provided with a main slot.

4. The device for detecting the thickness of a cable insulation layer according to claim 3, characterized in that: The second fixed top block is located in the middle of the second clamping slot and has a return slot, and the second fixed top block is located at the bottom end of the return slot and has an extrusion slot. The internal structure of the first fixed top block and the second fixed top block is the same, that is, both are provided with a return slot and an extrusion slot, the top end of the first fixed block is provided with a first clamping slot, the top end of the second fixed block is provided with a second clamping slot, a first claw slot is provided in the second clamping slot, and a clamping slot pad is fixedly connected in the second clamping slot, the clamping slot pad is affixed to the second clamping slot, and a pressing assembly is movably connected in the return slot, and the pressing assembly includes a claw block, the top end of the claw block is fixedly connected to a clamping rod, the outer wall of the clamping rod is movably sleeved with a first return spring, the bottom end of the claw block is fixedly connected to the first claw pad, and the clamping rod is movably clamped with the return slot The top end of the first return spring is fixedly connected to the clamping end of the clamping rod, and the bottom end of the first return spring is fixedly connected to the bottom end of the return groove, and the first return spring pulls the claw block to be squeezed in the direction of the second clamping slot, and the claw block is fitted with the first claw pad, and the claw block is movably connected to the first claw slot, and the claw of the claw block can enter the first claw slot, and the structure of the first clamping slot and the structure of the second clamping slot are the same. Both are provided with a clamping slot pad and a first claw slot, and the first fixed top block is provided with the same downward pressing component structure as the second fixed top block, that is, the first fixed top block is also provided with a claw block, a clamping rod, and a first return spring, and the connection relationship is the same, wherein the claw block and the first claw pad of the first fixed top block and the claw block and the first claw pad of the second fixed top block are mirror images.

5. The device for detecting the thickness of the cable insulation layer according to claim 4, characterized in that: The top end of the first fixing auxiliary block is located at the other end of the hinge and is fixedly connected to the first fixing side block, and the second fixing auxiliary block is located at the other end of the hinge and is fixedly connected to the second fixing side block. The middle of the first fixing side block is movably clamped with the first fixing screw, and the middle of the second fixing side block is movably clamped with the second fixing screw. The first fixing screw has a first fixing thread at the bottom end, and the second fixing screw has a second fixing thread at the bottom end of the second fixing screw. The top of the base is provided with a first fixing groove and the base is provided with a second fixing groove at the bottom end of the second fixing thread. The first fixing auxiliary block is threadedly connected to the top end of the first fixing block by the hinge and the first fixing thread at the bottom end of the first fixing screw of the first fixing side block, and the second fixing auxiliary block is threadedly connected to the second fixing groove by the hinge and the second fixing thread at the bottom end of the second fixing screw of the second fixing side block to tightly fit with the top end of the second fixing block.

6. The device for detecting the thickness of the cable insulation layer according to claim 5, characterized in that: A stretching return groove is provided in the middle of the stretching auxiliary block, a stretching pressure groove is provided at the bottom end of the stretching return groove, a stretching rod is installed in the stretching return groove, the stretching rod is movably clamped with the stretching return groove, a second return spring is movably sleeved on the outer wall of the stretching rod, the bottom end of the stretching rod is fixedly connected to the top of the second return spring, the bottom end of the second return spring is fixedly connected to the bottom end of the stretching return groove, a stretching groove is provided at the top of the stretching block, a second claw groove is provided in the stretching groove, a second claw pad is installed in the stretching groove, a stretching claw is fixedly connected to the bottom end of the stretching rod and located on the outside of the stretching pressure groove, the claw of the stretching claw is movably connected to the second claw groove, and the stretching block and the stretching auxiliary block are fixedly connected by a buckle.

7. The device for detecting the thickness of a cable insulation layer according to claim 6, characterized in that: The base is provided with a pulling groove at the position of the movable block, and the base is provided with a through groove at the end away from the first fixed groove. The through groove is connected with the pulling groove, and a rotating rod is movably connected in the through groove. The rotating rod is provided with a tightening thread on one side of the pulling groove, and the rotating rod is fixedly connected to a handle on the outside of the base, and the tightening thread is threadedly connected to the movable thread groove of the movable block.

8. A detection method for a thickness detection device for a cable insulation layer, implemented in a thickness detection device for a cable insulation layer according to claim 7, characterized in that: Includes the following: S1. When it is necessary to test the polyvinyl chloride insulated cable, the cable is first placed in the first fixing block, the second fixing block and the stretching block, ensuring that the exposed wire portion of the cable is located at the stretching block. At this time, the first fixing top block is flipped over, and the first fixing thread of the first fixing screw is passed into the first fixing groove by pressing. The first fixing screw is tightened at this time, so that the first return spring in the first fixing top block pulls the top end of the clamping rod back to the bottom end of the return groove, thereby causing the claw block to press the insulation layer of the cable. When the first fixing screw cannot rotate; S2. At this time, the stretching auxiliary block of the stretching block is closed and locked with a buckle. At this time, the stretching claw presses the wire end of the cable tightly through the second return spring. At this time, the rotating rod starts to rotate. When the handle is rotated, the threaded connection between the thread and the movable thread groove is tightened. As a result, when the handle is rotated, the stretching block is pulled in the direction of the handle, causing the wire end of the cable to be stretched and the cable to be straightened. Since the insulation layer of the cable has not been pulled, the insulation layer remains unchanged. S3. At this time, the second fixing auxiliary block begins to be closed. When the second fixing auxiliary block is closed, the second fixing thread of the second fixing screw is inserted into the second fixing groove by pressing. At this time, the second fixing screw is tightened, so that the first return spring in the second fixing top block pulls the top of the clamping rod back to the bottom end of the return groove, so that the claw block presses the insulation layer of the cable. At this time, the main rod is lowered. When the main rod is lowered, the block stops falling after contacting the wire. At this time, the puncture needle is also slowly lowered. As the puncture needle stops being lowered, it means that the puncture needle has contacted the insulation layer of the cable, piercing a small amount of insulation layer of the cable at the needle tip of the puncture needle or not piercing it. At this time, part of the puncture thread is located at the auxiliary clamping slot. At this time, the clamping rod is moved in After the line is lifted up and released, the return clamping spring releases the deformation energy, pulling the puncture sub-block back, so that the clamping blocks are merged. At this time, the puncture thread slowly rotates the puncture knob of the puncture needle, so that the puncture thread slowly rotates and punctures in the area where the semi-thread grooves of the clamping block are merged, which will cause the needle tip of the puncture needle to slowly pierce the insulation layer of the cable until the needle tip of the puncture needle touches the top of the wire of the cable, which will form a closed circuit between the wire of the cable, the stretching claw, the prompt light, and the puncture thread and the battery of the stretching auxiliary block, causing the prompt light to light up. At this time, it means that the insulation thickness of the cable has been measured. At this time, the zero scale of the sub-scale is aligned with the main scale by rotating the sub-scale. After reading the value pointed to by the zero scale of the sub-scale, the thickness of the cable can be obtained by calculation. S4. After the measurement is completed, it is necessary to enter the contact and fixed state. At this time, the puncture needle is rotated in the opposite direction so that the needle tip of the puncture needle leaves the second card slot. Then, the stretching auxiliary block is contacted with the buckle of the stretching block, and the second fixing screw and the first fixing screw are released. The cable can be taken out and the device can be carried for testing at any time next time.

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