Cable pay-off device for weak current engineering

Abstract

The invention relates to the technical field of pay-off, in particular to a cable pay-off device for weak current engineering, which comprises a cable full-automatic pay-off rack, a cable self-checking and repairing mechanism is arranged on one side of the cable full-automatic pay-off rack, and whether the surface of a cable is damaged or not can be automatically detected through the cable self-checking and repairing mechanism. According to the technical scheme, damage of the cable can be found and repaired in time, the cable pulled to the original position can be suspended in the air through the cable suspension anti-friction mechanism, so that the situation that the surface of the cable is damaged due to friction between the cable and a weak current project is prevented, damage of the cable can be found and repaired in time, and the service life of the cable is prolonged. The cable is protected in the weak current engineering, and the problems that whether the surface of the cable is damaged or not cannot be detected and repaired, the functionality is low, and if the cable is pulled to be too long, friction is generated between a part of the cable and the ground of the weak current engineering site are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying, in particular to a cable laying device for weak current engineering. Background Art

[0002] Weak current engineering is a classification of power application. Power application can be divided into strong current and weak current according to the strength of power transmission. The power used in buildings and building complexes generally refers to weak current below AC 220V50Hz, which mainly provides power energy to people and converts electric energy into other energy, such as air conditioning, lighting, power, etc.

[0003] In the process of constructing weak-current engineering, it is generally necessary to use a cable pay-out rack to organize and assist in the laying-out of weak-current cables. These devices usually have multiple functions, such as cable fixing, organizing, and convenient extraction. The cable pay-out rack used for laying-out operations in weak-current engineering can be called a cable laying-out device for weak-current engineering.

[0004] However, when this cable unwinding device for weak current engineering is in use, it is unable to detect and repair damaged locations on the cables. If workers directly lay broken cables, these damages may gradually expand during subsequent use, resulting in degradation of cable performance or even failure. In addition, the damaged cables are prone to short circuits, leakages, and other problems after being powered on, increasing the risk of electrical fires and equipment damage, posing a threat to personnel and property safety. If the cables on this cable unwinding device are pulled too long, part of the cables will rub against the ground at the weak current engineering site, thereby damaging their surface. Therefore, this does not meet existing needs, and we have proposed a cable unwinding device for weak current engineering. Summary of the invention

[0005] The purpose of the present invention is to provide a cable laying device for weak current engineering, so as to solve the problem that the cable laying device for weak current engineering proposed in the above background technology cannot detect the damaged position on the cable and repair it when in use. If the staff directly lays the broken cable, these damages may gradually expand during subsequent use, thereby causing the cable performance to deteriorate or even fail. In addition, the damaged cable is prone to cause short circuit, leakage and other problems after power is turned on, increasing the risk of electrical fire and equipment damage, posing a threat to the safety of personnel and property. If the cable on this cable laying device is pulled too long, part of the cable will rub against the ground of the weak current engineering site, thereby damaging its surface.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable pay-off device for weak current engineering, comprising a cable full-automatic pay-off frame, a cable self-inspection and repair mechanism is provided on one side of the cable full-automatic pay-off frame, the cable self-inspection and repair mechanism comprises a spark detector for cable detection, an insulating paint transmission tube, a rubber asphalt glue transmission tube, two metal rings, four coating rollers, two through ports and a synchronous rotation mechanism, the insulating paint transmission tube and the rubber asphalt glue transmission tube are both located behind the spark detector for cable detection;

[0007] The four coating rollers are respectively located on both sides of the two metal rings, the two through ports are respectively located in the middle of the upper end surfaces of the two metal rings, and the two through ports correspond to the positions of the insulating paint transmission pipe and the rubber asphalt glue transmission pipe, respectively, and the two metal rings can be driven to rotate synchronously through the synchronous rotation mechanism;

[0008] A cable suspension anti-friction mechanism is provided on one side of the cable self-inspection and repair mechanism, and the cable suspension anti-friction mechanism includes a base, a suspension sleeve, an adsorption head, a piston groove, a piston head, a locking lifting mechanism and two fixed brackets, the two fixed brackets are respectively fixed to the two sides of the upper end surface of the base, and the suspension sleeve is fixed between the top ends of the two fixed brackets;

[0009] The adsorption head is located in the middle of the lower end surface of the base, the piston groove is located inside the adsorption head, and the piston head is located on the lower side inside the piston groove. The locking lifting mechanism can drive the piston head to move up and down and fix it.

[0010] Preferably, the cable self-inspection and repair mechanism is electrically connected to the cable automatic pay-off rack, and the cable self-inspection and repair mechanism also includes a cable tube, a heat dryer is fixedly installed on one side of the upper end surface of the cable tube, and a small extraction pump B fixedly installed on the outer surface of the cable tube is provided in front of the heat dryer, the lower end surface of the small extraction pump B is connected to the rubber asphalt glue tank through a threaded structure, and the upper end surface of the small extraction pump B is fixed to the rubber asphalt glue transmission pipe.

[0011] Preferably, a small extraction pump A is provided in front of the small extraction pump B, the lower end surface of the small extraction pump A is connected to the insulating paint tank through a threaded structure, and the upper end surface of the small extraction pump A is fixed to the insulating paint transmission pipe.

[0012] Preferably, a cable positioning roller is provided at each of the four end corners inside the cable tube, the top end of the cable positioning roller is located inside the cable tube and is slidably connected to the cable tube, and a spring A is connected to one side of the outer surface of the cable positioning roller located inside the cable tube.

[0013] Preferably, the synchronous rotation mechanism includes a single-bar cylinder, the piston rod of the single-bar cylinder is connected to a tooth row, a gear A is meshed on both sides of the upper end surface of the tooth row, the axis of the gear A is connected to the gear shaft A, a bevel gear A is fixedly sleeved on one side of the outer surface of the gear shaft A, the bevel gear A is meshed with a bevel gear B, the axis of the bevel gear B is connected to the gear shaft B, and a gear B is fixedly sleeved on one side of the outer surface of the gear shaft B.

[0014] Preferably, the gear B is meshed with a gear ring, and the two gear rings are respectively fixedly sleeved on the middle positions of the outer surfaces of the two metal rings, and the through opening located at the middle position of the upper end surface of the metal ring vertically movably penetrates the gear ring.

[0015] Preferably, a square plate is provided on both sides of the metal ring, the surface of the square plate facing the nearest smear roller is fixed to the smear roller, and a spring B is connected to both sides of the surface of the square plate not facing the smear roller.

[0016] Preferably, the inner wall of the suspension sleeve is provided with a circle of protective cotton;

[0017] The locking lifting mechanism includes a circular plate, a manual operating rod is fixedly provided at the middle position of the upper end surface of the circular plate, a circle of locking heads is fixedly provided on the outer side of the lower end surface of the circular plate, a locking groove located inside the base is provided on the outer side of the locking head, a magnet is fixedly provided on the lower side inside the locking groove, and the surface of the magnet facing the locking head is in contact with the locking head.

[0018] Preferably, a square rotating shaft is fixedly provided in the middle position of the lower end surface of the circular plate, and a lifting threaded rod is provided on the outer side of the bottom end of the square rotating shaft, which is located inside the base and connected to the base through a threaded structure, and a connecting rod is fixedly provided in the middle position of the lower end surface of the lifting threaded rod, and the lower end surface of the connecting rod is fixed to the piston head.

[0019] Preferably, a square slot is provided in the middle of the upper end surface of the lifting threaded rod, and the bottom end of the square rotating shaft is located inside the square slot;

[0020] The inner wall cross-section of the square slot is in a square shape, the outer surface of the square shaft fits the inner wall of the square slot, and the square shaft is slidably connected to the square slot.

[0021] The present invention can detect whether the surface of the cable pulled out from the cable automatic pay-off rack is damaged through the cable detection spark detector in the cable self-inspection and repair mechanism. If there is damage, a layer of insulating paint will be applied to the damaged position first. The insulating paint has good permeability and insulation performance, can penetrate into the tiny damaged part of the cable and solidify to form an insulating layer, and then a layer of rubber asphalt glue is applied on the surface of the insulating paint and dried to form a rubber protective layer on the outer surface of the insulating layer to complete the repair operation. The above technical solution can timely detect and repair the damage of the cable, thereby reducing the safety risks caused by cable failure; the present invention can also suspend the cable pulled out from the cable automatic pay-off rack in mid-air through the suspension sleeve in the cable suspension anti-friction mechanism, so as to prevent friction between it and the site of the weak current project, and the suspension sleeve can be locked and fixed at the current position, so as to prevent the suspension sleeve from collapsing due to its pulling force when the cable is pulled. The above technical solution can protect the cable at the weak current project site. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 A magnified view of the structure at center A;

[0024] Figure 3 For the present invention Figure 1 A top view of the internal structure at center A;

[0025] Figure 4 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0026] Figure 5 For the present invention Figure 3 Side view of the internal structure at B in the middle;

[0027] Figure 6 For the present invention Figure 1 The main view of the internal structure at C in the middle;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of the structure at D in the middle. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figures 1 to 7, an embodiment provided by the present invention: a cable pay-off device for weak current engineering, comprising a cable automatic pay-off rack 1, a cable self-inspection and repair mechanism is provided on one side of the cable automatic pay-off rack 1, the cable self-inspection and repair mechanism comprises a spark detector 3 for cable detection, an insulating paint transmission tube 10, a rubber asphalt glue transmission tube 11, two metal rings 22, four coating rollers 23, two through ports 27 and a synchronous rotation mechanism, the insulating paint transmission tube 10 and the rubber asphalt glue transmission tube 11 are both located behind the spark detector 3 for cable detection;

[0031] The four coating rollers 23 are respectively located on both sides of the inside of the two metal rings 22, and the two through openings 27 are respectively located in the middle position of the upper end surfaces of the two metal rings 22, and the two through openings 27 correspond to the positions of the insulating paint transmission tube 10 and the rubber asphalt glue transmission tube 11, respectively, and the two metal rings 22 can be synchronously driven to rotate through the synchronous rotation mechanism; when the equipment needs to be used, the take-up reel with the cable wound on the outer surface is placed on the cable automatic pay-off stand 1, and then one end of the cable is pulled out and inserted into the inside of the cable detection spark detector 3, and then the cable automatic pay-off stand 1 is started to drive the cable to move forward along the cable detection spark detector 3. During the movement of the cable inside the cable detection spark detector 3, the cable detection spark detector 3 is started. The cable detection spark detector 3 can apply a certain high voltage on the cable surface. When the insulation layer is defective, spark discharge will be generated, thereby detecting the damage of the insulation layer.

[0032] Specifically, the cable self-inspection and repair mechanism is electrically connected to the cable automatic pay-off rack 1, and the cable self-inspection and repair mechanism also includes a cable tube 4, a heat dryer 5 is fixedly installed on one side of the upper end surface of the cable tube 4, and a small extraction pump B7 fixedly installed on the outer surface of the cable tube 4 is provided in front of the heat dryer 5, and the lower end surface of the small extraction pump B7 is connected to the rubber asphalt glue tank 9 through a threaded structure, and the upper end surface of the small extraction pump B7 is fixed to the rubber asphalt glue transmission pipe 11; a small extraction pump A6 is provided in front of the small extraction pump B7, and the lower end surface of the small extraction pump A6 is connected to the insulating paint tank 8 through a threaded structure, and the upper end surface of the small extraction pump A6 is fixed to the insulating paint transmission pipe 10; when the outer surface of the cable is damaged and detected by the spark detector 3 for cable detection, its data will be transmitted to the cable automatic pay-off rack 1.

[0033] In one embodiment of the present invention, a cable positioning roller 26 is provided at each of the four end corners inside the cable tube 4, the top end of the cable positioning roller 26 is located inside the cable tube 4 and is slidably connected to the cable tube 4, and a spring A12 is connected to one side of the outer surface of the cable positioning roller 26 located inside the cable tube 4; when the cable passes through the spark detector 3 for cable detection, it will contact the cable positioning roller 26 located inside the cable tube 4, and push the cable positioning roller 26 outward and squeeze the spring A12, so that the cable entering the cable tube 4 can be positioned at the middle position inside the cable tube 4 through the four cable positioning rollers 26 located inside the cable tube 4, and when the damaged position on the cable moves to the position where the insulating paint transmission tube 10 is connected to the cable tube 4, the cable automatic pay-off rack 1 will stop running, thereby temporarily stopping the transmission of the cable;

[0034] When the transmission of the cable stops, the small extraction pump A6 will be started. The small extraction pump A6 can extract the insulating paint inside the insulating paint tank 8 and discharge it from the insulating paint transmission pipe 10. The insulating paint discharged from the insulating paint transmission pipe 10 will drip onto the cable through the corresponding opening 27.

[0035] In another embodiment of the present invention, the synchronous rotation mechanism includes a horizontal rod cylinder 13, the piston rod of the horizontal rod cylinder 13 is connected to a gear row 14, both sides of the upper end surface of the gear row 14 are meshed with a gear A15, the axis of the gear A15 is connected to a gear shaft A16, one side of the outer surface of the gear shaft A16 is fixedly sleeved with a bevel gear A17, the bevel gear A17 is meshed with a bevel gear B18, the axis of the bevel gear B18 is connected to a gear shaft B19, and one side of the outer surface of the gear shaft B19 is fixedly sleeved with a gear B20; when insulating paint drips onto the cable, the horizontal rod cylinder 13 will It starts automatically. At this time, the horizontal cylinder 13 pushes the gear row 14 connected to it forward. During the movement of the gear row 14, the gear A15 meshing with it and the gear shaft A16 connected to the axis of the gear A15 will rotate accordingly. The rotating gear shaft A16 can drive the bevel gear A17 fixed on the outer surface of the gear shaft A16 and the bevel gear B18 meshing with it to rotate. When the bevel gear B18 rotates, the gear shaft B19 connected to the axis of the bevel gear B18 and the gear B20 fixed on the outer surface of the gear shaft B19 will rotate synchronously.

[0036] In another embodiment of the present invention, the gear B20 is meshed with a gear ring 21, and the two gear rings 21 are fixedly sleeved on the middle positions of the outer surfaces of the two metal rings 22, and the through opening 27 located in the middle position of the upper end surface of the metal ring 22 vertically penetrates the gear ring 21; the rotating gear B20 can drive the gear ring 21 meshed with it and the metal ring 22 fixed between the gear ring 21 to rotate.

[0037] In another embodiment of the present invention, a square plate 24 is provided on both sides of the metal ring 22, and the surface of the square plate 24 facing the nearest coating roller 23 is fixed to the coating roller 23, and a spring B25 is connected to both sides of the surface of the square plate 24 not facing the coating roller 23; when the cable passes through the metal ring 22 located inside the cable tube 4, it will contact the two coating rollers 23 located inside the metal ring 22 and push it outward, and when the metal ring 22 rotates, the coating roller 23 fixed between the square plate 24 located inside it will rotate along the outer surface of the cable, and the insulating paint dripping onto the surface of the cable can be evenly applied by the rotating coating roller 23. In this process, the insulating paint will penetrate into the damaged part of the cable and solidify to form an insulating layer, and when the tooth row 14 can no longer be pushed forward by the single-bar cylinder 13, the tooth row 14 is pulled back, and when the tooth row 14 is pulled back to its original position, the through hole 27 on the metal ring 22 will also return to its original position;

[0038] When the insulating layer is applied, the cable is pushed forward again by the cable automatic pay-off stand 1. When the position where the insulating layer is applied on the cable moves to the position corresponding to the rubber asphalt glue transmission pipe 11, the rubber asphalt glue inside the rubber asphalt glue tank 9 is extracted by the small extraction pump B7 and discharged through the rubber asphalt glue transmission pipe 11. The rubber asphalt glue discharged from the rubber asphalt glue transmission pipe 11 will drip onto the insulating layer of the cable through the corresponding opening 27. Then, the metal ring 22 is driven to rotate by the above-mentioned technical scheme to evenly apply the rubber asphalt glue to the outside of the insulating layer. When the rubber asphalt glue is applied, the cable is driven to move again by the cable automatic pay-off stand 1. When the rubber asphalt glue layer applied on the surface of the cable moves to the position of the hot dryer 5, it can be dried by the hot dryer 5. The above-mentioned technical scheme can timely detect and repair cable damage, thereby reducing the safety risks caused by cable failure.

[0039] Please continue reading Figures 1 to 7 , a cable suspension anti-friction mechanism 2 is provided on one side of the cable self-inspection and repair mechanism provided by the present invention, and the cable suspension anti-friction mechanism 2 includes a base 201, a suspension sleeve 203, an adsorption head 204, a piston groove 205, a piston head 206, a locking lifting mechanism and two fixed brackets 202, the two fixed brackets 202 are respectively fixed to the two sides of the upper end surface of the base 201, and the suspension sleeve 203 is fixed between the top ends of the two fixed brackets 202;

[0040] The suction head 204 is located in the middle of the lower end surface of the base 201, the piston groove 205 is located inside the suction head 204, and the piston head 206 is located at the lower side of the piston groove 205. The locking lifting mechanism can drive the piston head 206 to move up and down and fix it; the inner wall of the suspension sleeve 203 is provided with a circle of protective cotton;

[0041] The locking lifting mechanism includes a circular plate 208, a manual operating lever is fixedly provided at the middle position of the upper end surface of the circular plate 208, a circle of locking heads 209 are fixedly provided on the outer side of the lower end surface of the circular plate 208, a locking groove 214 located inside the base 201 is provided on the outer side of the locking head 209, a magnet 210 is fixedly provided on the lower side inside the locking groove 214, and the surface of the magnet 210 facing the locking head 209 is in contact with the locking head 209; when the cable is pulled too long and friction occurs between its outer surface and the weak current engineering site, the cable is lifted up and suspended in the air to prevent friction Mechanism 2, passes the cable head through the suspension sleeve 203 in the cable suspension anti-friction mechanism 2, and places the base 201 on the ground, so that the cable drawn from the cable automatic pay-off rack 1 can be suspended in the air through the suspension sleeve 203 to prevent it from rubbing against the weak current engineering site. The above technical solution can protect the cable at the weak current engineering site, and the protective cotton located on the inner wall of the suspension sleeve 203 can prevent the cable from rubbing against the suspension sleeve 203 violently, thereby causing damage to the cable.

[0042] When the base 201 is placed on the ground, the adsorption head 204 located in the middle of its lower end surface will contact the ground, and then the circular plate 208 is pulled upward by a manual operating rod. The circular plate 208 can only be rotated when the locking head 209 fixed to the lower end surface of the circular plate 208 is pulled out from the locking groove 214.

[0043] Please continue reading Figures 1 to 7 A square rotating shaft 211 is fixedly provided at the middle position of the lower end surface of the circular plate 208 provided by the present invention, and a lifting threaded rod 212 is provided on the outer side of the bottom end of the square rotating shaft 211, which is located inside the base 201 and connected to the base 201 through a threaded structure; a connecting rod 207 is fixedly provided at the middle position of the lower end surface of the lifting threaded rod 212, and the lower end surface of the connecting rod 207 is fixed to the piston head 206; a square slot 213 is provided at the middle position of the upper end surface of the lifting threaded rod 212, and the bottom end of the square rotating shaft 211 is located inside the square slot 213;

[0044] The inner wall cross-section of the square slot 213 is square, the outer surface of the square shaft 211 fits with the inner wall of the square slot 213, and the square shaft 211 and the square slot 213 are slidably connected; when the locking head 209 completely leaves the locking groove 214, the circular plate 208 is manually rotated, and when the circular plate 208 rotates, the square shaft 211 fixed to its lower end surface will rotate together with it. Since the outer surface of the square shaft 211 fits with the inner wall of the square slot 213 located on the upper end surface of the lifting threaded rod 212, when the square shaft 211 rotates, the lifting threaded rod 212 will rotate together with it. Through the transmission of the threaded structure, the rotating lifting threaded rod 212 will move up and down accordingly. At this time, the lifting threaded rod 212 moves upward, and the piston head 206 connected to the lifting threaded rod 212 through the connecting rod 207 during the upward movement will move upward together with it. , by moving the piston head 206 upward, the air located on the lower side of the adsorption head 204 can be extracted into the piston groove 205, so as to fix the adsorption head 204 and the base 201 at the current position. When the base 201 is fixed, the angle of the circular plate 208 is adjusted, and the locking head 209 on the lower end surface of the circular plate 208 is aligned with the locking groove 214, and then the circular plate 208 is pushed downward. When the locking head 209 enters the locking groove 214 again, the circular plate 208 will be fixed and cannot rotate. When the circular plate 208 is fixed and cannot rotate, the piston head 206 will be fixed at the current position, and the base 201 and the suspension sleeve 203 indirectly connected to the base 201 will be locked in the current position. The above technical solution can lock the suspension sleeve 203, so as to prevent the suspension sleeve 203 from collapsing due to the pulling force when the cable is pulled;

[0045] The locking head 209 that has entered the locking groove 214 will contact the magnet 210. The magnetic force of the magnet 210 can prevent the locking head 209 from moving upward without authorization, thereby causing the fixing to become loose.

[0046] When the base 201 needs to be released from fixation, the circular plate 208 is pulled upward again, and when the locking head 209 leaves the locking groove 214, the circular plate 208 is rotated in the reverse direction.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A cable pay-off device for weak current engineering, including a fully automatic cable pay-off rack, characterized in that: A cable self-inspection and repair mechanism is provided on one side of the cable automatic pay-off stand, and the cable self-inspection and repair mechanism includes a spark detector for cable detection, an insulating paint transmission tube, a rubber asphalt glue transmission tube, two metal rings, four coating rollers, two through ports and a synchronous rotation mechanism, and the insulating paint transmission tube and the rubber asphalt glue transmission tube are both located behind the spark detector for cable detection; The four coating rollers are respectively located on both sides of the two metal rings, the two through ports are respectively located in the middle of the upper end surfaces of the two metal rings, and the two through ports correspond to the positions of the insulating paint transmission pipe and the rubber asphalt glue transmission pipe, respectively, and the two metal rings can be driven to rotate synchronously through the synchronous rotation mechanism; A cable suspension anti-friction mechanism is provided on one side of the cable self-inspection and repair mechanism, and the cable suspension anti-friction mechanism includes a base, a suspension sleeve, an adsorption head, a piston groove, a piston head, a locking lifting mechanism and two fixed brackets, the two fixed brackets are respectively fixed to the two sides of the upper end surface of the base, and the suspension sleeve is fixed between the top ends of the two fixed brackets; The adsorption head is located in the middle of the lower end surface of the base, the piston groove is located inside the adsorption head, and the piston head is located on the lower side inside the piston groove. The locking lifting mechanism can drive the piston head to move up and down and fix it.

2. A cable pay-out device for weak current engineering according to claim 1, characterized in that: The cable self-inspection and repair mechanism is electrically connected to the cable automatic pay-off rack, and also includes a cable tube, a heat dryer is fixedly installed on one side of the upper end surface of the cable tube, a small extraction pump B fixedly installed on the outer surface of the cable tube is provided in front of the heat dryer, the lower end surface of the small extraction pump B is connected to a rubber asphalt tank via a threaded structure, and the upper end surface of the small extraction pump B is fixed to the rubber asphalt transmission pipe.

3. A cable pay-out device for weak current engineering according to claim 2, characterized in that: A small extraction pump A is provided in front of the small extraction pump B. The lower end surface of the small extraction pump A is connected to an insulating paint tank through a threaded structure, and the upper end surface of the small extraction pump A is fixed to the insulating paint transmission pipe.

4. The cable pay-out device for weak current engineering according to claim 2, characterized in that: A cable positioning roller is provided at each of the four end corners inside the cable tube. The top end of the cable positioning roller is located inside the cable tube and is slidably connected to the cable tube. A spring A is connected to one side of the outer surface of the cable positioning roller inside the cable tube.

5. The cable pay-out device for weak current engineering according to claim 1, characterized in that: The synchronous rotation mechanism includes a horizontal rod cylinder, the piston rod of the horizontal rod cylinder is connected to a tooth row, a gear A is meshed on both sides of the upper end surface of the tooth row, the axis of the gear A is connected to a gear shaft A, a bevel gear A is fixedly sleeved on one side of the outer surface of the gear shaft A, the bevel gear A is meshed with a bevel gear B, the axis of the bevel gear B is connected to the gear shaft B, and a gear B is fixedly sleeved on one side of the outer surface of the gear shaft B.

6. A cable pay-out device for weak current engineering according to claim 5, characterized in that: The gear B is meshed with a gear ring, and the two gear rings are respectively fixedly sleeved on the middle positions of the outer surfaces of the two metal rings, and the through opening located at the middle position of the upper end surface of the metal ring vertically movably penetrates the gear ring.

7. A cable pay-out device for weak current engineering according to claim 6, characterized in that: A square plate is provided on both sides of the metal ring. The surface of the square plate facing the nearest smear roller is fixed to the smear roller. A spring B is connected to both sides of the surface of the square plate not facing the smear roller.

8. The cable pay-out device for weak current engineering according to claim 1, characterized in that: The inner wall of the suspended sleeve is provided with a circle of protective cotton; The locking lifting mechanism includes a circular plate, a manual operating rod is fixedly provided at the middle position of the upper end surface of the circular plate, a circle of locking heads is fixedly provided on the outer side of the lower end surface of the circular plate, a locking groove located inside the base is provided on the outer side of the locking head, a magnet is fixedly provided on the lower side inside the locking groove, and the surface of the magnet facing the locking head is in contact with the locking head.

9. A cable pay-out device for weak current engineering according to claim 8, characterized in that: A square rotating shaft is fixedly provided in the middle position of the lower end surface of the circular plate, and a lifting threaded rod is provided on the outer side of the bottom end of the square rotating shaft, which is located inside the base and connected to the base through a threaded structure. A connecting rod is fixedly provided in the middle position of the lower end surface of the lifting threaded rod, and the lower end surface of the connecting rod is fixed to the piston head.

10. A cable pay-out device for weak current engineering according to claim 9, characterized in that: A square slot is provided in the middle of the upper end surface of the lifting threaded rod, and the bottom end of the square rotating shaft is located inside the square slot; The inner wall cross-section of the square slot is in a square shape, the outer surface of the square shaft fits the inner wall of the square slot, and the square shaft is slidably connected to the square slot.

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