Cable threading device for cable installation and cable threading method

Abstract

The invention discloses a cable penetrating device for cable installation and a cable penetrating method.The cable penetrating device comprises a penetrating rod seat, a pull-back seat is fixedly installed at the bottom of the penetrating rod seat, a gear set structure is arranged in the pull-back seat, and the gear set structure comprises a coupling shaft installed in the pull-back seat; rear driving wheels are installed at the left end and the right end of the coupling shaft, a first gear is arranged on the surface of the coupling shaft, and a second gear is arranged on one side of the first gear; the penetrating rod seat is connected with the pull-back seat, the wheels are arranged on the front portion and the rear portion of the pull-back seat, the gear set structure is installed in the pull-back seat and connected with the rear drive wheel through the coupling, and pull-back and automatic forward moving of the rear drive wheel are achieved by means of different gear ratios of the gear set structure. A set of large gears in the gear set structure are connected with the torsion spring, unpowered driving of the rear drive wheels is achieved through elastic potential energy of the torsion spring, and waste of electric power resources is avoided.

Description

Technical Field

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

[0002] Today, with the vigorous development of the electric power industry, the rapid expansion of the data communication industry, the increasing improvement of the urban rail transit industry, the continuous innovation of the automobile industry and the continued growth of the shipbuilding industry, the demand for wires and cables in these industries has shown a rapid growth trend. When producing cables in factories, cables are sometimes pulled through the pipes to be assembled through cable threading devices. If the cables are in a bent state before threading, it is difficult to pull the cables into the pipes.

[0003] A Chinese patent discloses a cable threading device for cable processing (publication number CN118701873A), which includes a frame, a movable frame, a displacement adjustment mechanism and a tensioning mechanism. The movable frame is slidably connected to the frame and is adjusted in position in the frame under the drive of the displacement adjustment mechanism. The tensioning mechanism is arranged in the movable frame and is used to tension the threaded cable. The present invention drives the driving roller to rotate through a motor, drives the cable to move, and through the compression adjustment component and the guide component of the tensioning mechanism, on the one hand, the cable to be threaded can be tensioned, and on the other hand, the cable can be limited and straightened through the limit cylinder with adjustable spacing, and can also adapt to the straightening of cables of different sizes, so as to facilitate the traction of the cable in the pipeline; the above-mentioned technical scheme adopts a tensioning mechanism and a cable straightening method when threading the cable, so as to solve the problem that the cable bends during the threading process, but the equipment provided by the above-mentioned scheme has limitations for cable threading, and multiple groups of cables need to pass through the existing pipeline, and multiple cables are concentrated in the pipeline, which makes it convenient to bury the cables and lay other paths through the pipeline. The existing threading of multiple cables adopts one by one for threading, and on the other hand, a driving device is used to complete fast and automatic threading, which has poor threading efficiency. At the same time, power threading wastes electricity resources and is prone to failure, which is not conducive to the use of cable laying on site.

[0004] Therefore, those skilled in the art provide a cable threading device and a cable threading method for cable installation to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a cable threading device and a cable threading method for cable installation, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A cable threading device for cable installation comprises a rod threading seat, a pull-back seat is fixedly mounted on the bottom of the rod threading seat, and a gear set structure is arranged inside the pull-back seat; The gear set structure includes a coupling shaft installed inside the pullback seat, rear-drive wheels are installed on both left and right ends of the coupling shaft, a first gear is arranged on the surface of the coupling shaft, a second gear is arranged on one side of the first gear, a third gear is fixedly connected to the rear wall of the second gear, a fourth gear is installed above the third gear, a fifth gear is installed on the left side of the second gear, a limiting groove is arranged on the front side of the fifth gear, a sixth gear is arranged on the left side of the fifth gear, a large gear is integrally connected to the back of the sixth gear, a fixing plate is fixedly connected to the center of the back surface of the large gear, a coil spring box is installed on the back of the large gear, and a torsion spring is installed inside the coil spring box; The outer side of the piercing rod seat is movably connected with a mounting bracket, and the top end of the mounting bracket is connected with a roller seat, an air suction chamber is installed on the outer side of the roller seat through the bracket, and the front end of the air suction chamber is connected with a cable adsorption chamber tube, and a wire hole is fixedly opened at the end of the cable adsorption chamber tube, and a negative pressure interface is provided on the outer wall of the air suction chamber, and an air suction pipe is connected to the upper end of the negative pressure interface, and a negative pressure suction machine is installed on the upper end of the air suction pipe, and the negative pressure suction machine is fixedly installed on the outer wall of the air suction chamber.

[0007] As an implementation manner of the present invention, the large gear is connected to each other through a fixing plate and a torsion spring, and the large gear and the sixth gear are integrally fixedly connected.

[0008] As an implementation mode of the present invention, a clamping groove is provided on the inner wall of the coil spring box, and the clamping groove and one end of the torsion spring are in contact with each other.

[0009] As an embodiment of the present invention, the lower end of the mounting bracket is rotatably connected to the rod-piercing seat, and the upper end of the mounting bracket is a rotatable structure to the roller seat.

[0010] As an embodiment of the present invention, a micro telescopic cylinder is movably connected in the middle of the surface of the roller seat, and a shock absorbing damping rod is installed on one side of the micro telescopic cylinder, and a buffer spring is arranged on the surface of the shock absorbing damping rod.

[0011] As an implementation mode of the present invention, the outer sleeve of the roller seat is provided with a rolling belt, and the roller seat is distributed in a triangular shape with respect to the symmetric center line of the rod-piercing seat.

[0012] As an implementation mode of the present invention, a front cover is fixed to the front end of the rod-piercing seat, a camera is installed inside the front cover, and a transparent protective cover is fixed to the outer side of the front cover by screws.

[0013] As an implementation mode of the present invention, a soft rubber neck is provided inside the wire hole, and one end of the wire hole is connected to an airway.

[0014] As an implementation mode of the present invention, the interior of the wire hole is connected to the interior of the air inhalation cavity through an airway, and the wire hole and the airway are arranged in a one-to-one correspondence.

[0015] A cable threading method of a cable threading device for cable installation, comprising the following steps: S1: First, multiple cables are connected to the wire holes set on the cable adsorption cavity tube in sequence, and the negative pressure suction machine sucks air into the interior of the suction cavity through the suction tube and the negative pressure interface, so that the interior of the suction cavity is in a negative pressure state. The suction cavity is connected with the wire holes inside the cable adsorption cavity tube through the airway, and the multiple cables are adsorbed inside the wire holes in sequence; S2: Secondly, the rod-piercing seat is moved by using the pull-back seat at the bottom of the rod-piercing seat to pull the rear-drive wheel backward. When pulling back, the first gear and the second gear are meshed with each other, and both forward and reverse rotations are meshed with each other. During the pulling back process, the fifth gear moves downward and meshes with the sixth gear on the large gear, and the fourth gear is separated from the large gear. S3: When pulling back to accumulate force, the large gear twists the torsion spring, causing the torsion spring to accumulate elastic potential energy. When releasing, the fifth gear moves in the opposite direction and disengages from the sixth gear on the large gear. The fourth gear approaches the large gear and engages with it. The elastic potential energy of the torsion spring is used to drive the rear-drive wheels to rotate. The pullback seat moves along the inside of the pipe under the rolling of the rear-drive wheels, bringing multiple cables into the pipe, thereby completing the cable threading.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the connection between the rod-piercing seat and the pull-back seat, the pull-back seat is provided with wheels at the front and rear, and a gear set structure is installed inside the pull-back seat. The gear set structure is connected to the rear-drive wheel through a coupling shaft, and the pull-back and automatic forward movement of the rear-drive wheel are realized by utilizing the different gear ratios of the gear set structure. A group of large gears in the gear set structure are connected to the torsion spring, and the rear-drive wheel is driven without power by utilizing the elastic potential energy of the torsion spring, thereby avoiding waste of power resources and failure and damage of the drive equipment. The movement of the pull-back seat in the pipeline is utilized to pass the cable through the pipeline and pass it out from the other end of the pipeline, thereby completing the cable threading inside the pipeline. At the same time, the arrangement of the rod-piercing seat and the pull-back seat is also conducive to the cable threading operation at the cable laying site, which has better flexibility in use and reduces the limitations of cable threading. 2. A cable adsorption cavity tube is installed on the rod insertion seat. The cable adsorption cavity tube is connected with the suction cavity, and the airway between the suction cavity and the cable adsorption cavity tube is connected. The cable is adsorbed and connected in the cable adsorption cavity tube by using negative pressure adsorption, so that it is convenient for the rod insertion seat to carry the cable through the pipeline. The negative pressure suction machine is connected with the suction cavity through the suction tube and the negative pressure interface. The cable adsorption cavity tube is connected through the suction cavity and the connected airway, so that the wire hole in the cable adsorption cavity tube is in a negative pressure state, and the negative pressure state is used to attract the cable to be installed in the wire hole. A soft rubber neck is provided at the connection between the wire hole and the airway. The soft rubber neck will protect the cable port and avoid wear of the cable port caused by negative pressure adsorption. Multiple groups of wire holes are provided on the cable adsorption cavity tube, and multiple groups of cables can be connected at the same time, so that multiple strands of cables can be brought into the pipeline through the rod insertion seat at the same time for cable threading, thereby improving the cable threading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a cable threading device and a cable threading method for cable installation.

[0018] Figure 2 The present invention is a schematic diagram of the front end structure of a cable threading device and a cable threading method for cable installation.

[0019] Figure 3 The present invention is a front structural schematic diagram of a cable threading device and a rod threading seat in a cable threading method for cable installation.

[0020] Figure 4 The present invention is a schematic diagram of the internal structure of a retractable vehicle seat in a cable threading device and a cable threading method for cable installation.

[0021] Figure 5 The present invention is a schematic diagram of the connection structure between gear sets in a cable threading device and a cable threading method for cable installation.

[0022] Figure 6 The present invention is a schematic diagram of the structure of a cable adsorption cavity tube in a cable threading device and a cable threading method for cable installation.

[0023] Figure 7 The present invention is a schematic diagram of the internal cross-sectional structure of a cable adsorption cavity tube in a cable threading device and a cable threading method for cable installation.

[0024] In the figure: 1. rod holder; 2. pull-back seat; 201. rear drive wheel; 202. coupling; 203. first gear; 204. second gear; 205. third gear; 206. fourth gear; 207. fifth gear; 208. sixth gear; 209. large gear; 210. coil spring box; 211. limit slot; 212. fixing plate; 213. torsion spring; 214. slot; 3. mounting bracket; 4. roller seat; 5. micro telescopic cylinder; 6. shock-absorbing damping rod; 7. buffer spring; 8. rolling belt; 9. cable adsorption cavity tube; 901. wire hole; 902. negative pressure interface; 903. suction pipe; 904. negative pressure suction machine; 905. soft rubber neck; 906. airway; 907. suction cavity; 10. front cover; 11. transparent protective cover; 12. camera. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 to Figure 7 The embodiment of the present invention provides a cable threading device for cable installation, comprising a rod threading seat 1, a pull-back vehicle seat 2 is fixedly installed at the bottom of the rod threading seat 1, and a gear set structure is arranged inside the pull-back vehicle seat 2; The gear set structure includes a coupling shaft 202 installed inside the pullback seat 2, and rear-drive wheels 201 are installed at both left and right ends of the coupling shaft 202. A first gear 203 is provided on the surface of the coupling shaft 202, and a second gear 204 is provided on one side of the first gear 203. A third gear 205 is fixedly connected to the rear wall of the second gear 204, and a fourth gear 206 is installed above the third gear 205. A fifth gear 207 is installed on the left side of the second gear 204, and a limiting groove 211 is provided on the front side of the fifth gear 207. A sixth gear 208 is provided on the left side of the fifth gear 207, and a large gear 209 is integrally connected to the back of the sixth gear 208. A fixing plate 212 is fixedly connected to the center of the back surface of the large gear 209, a coil spring box 210 is installed on the back of the large gear 209, and a torsion spring 213 is installed inside the coil spring box 210. The outer side of the piercing rod seat 1 is movably connected with a mounting bracket 3, and the top of the mounting bracket 3 is connected with a roller seat 4, an air suction chamber 907 is installed on the outer side of the roller seat 4 through a bracket, and the front end of the air suction chamber 907 is connected with a cable adsorption chamber tube 9, and a wire hole 901 is fixedly opened at the end of the cable adsorption chamber tube 9, and a negative pressure interface 902 is provided on the outer wall of the air suction chamber 907, and an air suction pipe 903 is connected to the upper end of the negative pressure interface 902, and a negative pressure suction machine 904 is installed on the upper end of the air suction pipe 903, and the negative pressure suction machine 904 is fixedly installed on the outer wall of the air suction chamber 907.

[0027] The large gear 209 is connected to the torsion spring 213 through the fixing plate 212. The large gear 209 and the sixth gear 208 are integrally fixedly connected. The inner wall of the coil spring box 210 is provided with a slot 214, and the slot 214 and one end of the torsion spring 213 are in contact with each other. Specifically, the gear set structure includes multiple gears with different gear ratios. By utilizing the different gear ratios, the large gear 209 rotates one circle, and the connected rear-drive wheel 201 can rotate multiple circles, thereby realizing unpowered movement, driving the rod-piercing seat 1 to move in the pipeline, and then carrying the cable through the pipeline. The large gear 209 is connected to the torsion spring 213, and the torsion spring 213 is curled and arranged in the coil spring box 210. The curled torsion spring 213 has elastic potential energy, and the elastic potential energy is used to drive the large gear 209 to rotate. In this way, there is no need to use a power drive device to drive, thereby avoiding the waste of electric power resources. When in use, the pull-back seat 2 at the bottom of the rod-piercing seat 1 is used to move the rod-piercing seat 1, wherein the first gear 203 and the second gear 204 are meshed with each other regardless of forward or reverse rotation. Then, the pull-back seat 2 is pulled back backward. When pulling back, the fifth gear 207 moves downward and meshes with the sixth gear 208 on the large gear 209. There is a The sixth gear 208 and the large gear 209 are integrated into one body. When the fifth gear 207 moves downward, the fourth gear 206 is separated from the large gear 209. When pulling back to store power, the large gear 209 rotates under the meshing cooperation of the fifth gear 207 and the sixth gear 208, and then the large gear 209 twists the torsion spring 213 through the connection of the fixing plate 212, so that the torsion spring 213 accumulates elastic potential energy, and one end of the torsion spring 213 will be separated from the coil spring box 2 one by one while twisting. 10, the limiting groove 211 on the inner wall of the pull-back seat 2 is released, the rod-threading seat 1 is released, and when the pull-back seat 2 is released, the fifth gear 207 moves in the opposite direction and disengages from the sixth gear 208 on the large gear 209. At the same time, the fourth gear 206 approaches and meshes with the large gear 209, and the elastic potential energy of the torsion spring 213 is used to drive the rear-drive wheel 201 to rotate. The pull-back seat 2 moves along the inside of the pipeline under the rolling of the rear-drive wheel 201, bringing the multiple cables into the pipeline, thereby completing the cable threading.

[0028] The lower end of the mounting bracket 3 is rotatably connected to the rod-piercing seat 1, and the upper end of the mounting bracket 3 is a rotatable structure with the roller seat 4. A micro-telescopic cylinder 5 is movably connected to the middle of the surface of the roller seat 4, and a damping rod 6 is installed on one side of the micro-telescopic cylinder 5. A buffer spring 7 is arranged on the surface of the damping rod 6. A rolling belt 8 is arranged on the outer sleeve of the roller seat 4, and the roller seat 4 is distributed in a triangular shape with respect to the symmetric center line of the rod-piercing seat 1. Specifically, roller seats 4 are provided at the upper and lower ends of the mounting bracket 3, and the roller seats 4 are combined with the rolling belts 8 provided on the outside. When the vehicle seat 2 is pulled back to drive the rod-piercing seat 1 to move in the pipeline, the rolling belts 8 and the rollers inside the roller seats 4 cooperate with each other to roll in the pipeline, and the wheels move with the rod-piercing seat 1. After the torsional elastic potential energy disappears, the rear-drive wheel 201 will move forward by inertia. The rolling belts 8 can prevent the rod-piercing seat 1 from moving too far forward by inertia, thereby preventing the rod-piercing seat 1 from being damaged. In the process of cooperating with the movement of the rear-drive wheel 201, the rolling belts 8 and the rollers inside the roller seats 4 cooperate with each other to move along the pipeline. The inner wall of the pipe moves, and at the same time, according to the space diameter inside the pipe, the micro-telescopic cylinder 5 is used to pull the mounting bracket 3 to adjust the angle, and the upper and lower ends of the mounting bracket 3 are rotatably connected with the roller seat 4 and the piercing rod seat 1 respectively. When the mounting bracket 3 is perpendicular to the piercing rod seat 1, the external structure size of the piercing rod seat 1 is enlarged, so that the piercing rod seat 1 can better adapt to the inside of pipes of different sizes. At the same time, the shock-absorbing damping rod 6 and the buffer spring 7 cooperate with each other to achieve the shock-absorbing effect on the roller seat 4 and the piercing rod seat 1, and the combination of the shock-absorbing damping rod 6 and the buffer spring 7 can consume the potential energy of the spring while improving the shock absorption effect.

[0029] A front cover 10 is fixed to the front end of the rod-piercing seat 1, and a camera 12 is installed inside the front cover 10. A transparent protective cover 11 is fixed to the outside of the front cover 10 by screws. Specifically, the front end of the camera 12 is aligned with the interior of the pipeline. The camera 12 monitors the situation inside the pipeline during the movement of the rod-threading seat 1, so as to facilitate the internal situation of the pipeline while threading the cable.

[0030] A soft rubber neck 905 is provided inside the wire hole 901, and one end of the wire hole 901 is connected to an airway 906. The inside of the wire hole 901 is connected to the inside of the air inhalation cavity 907 through the airway 906. The wire hole 901 and the airway 906 are provided in a one-to-one correspondence. Specifically, according to the actual number of cables to be threaded, the required multiple cables are connected in sequence to the wire holes 901 set on the cable adsorption cavity tube 9, and the negative pressure suction machine 904 suctions the interior of the suction cavity 907 through the suction tube 903 and the negative pressure interface 902, so that the interior of the suction cavity 907 is in a negative pressure state, and the suction cavity 907 is interconnected with the wire holes 901 inside the cable adsorption cavity tube 9 through the airway 906. When the interior of the wire hole 901 is in a negative pressure state, the cable is sucked into the deep interior of the wire hole 901, and the sucked cable port will be in the soft rubber neck 905. The size of the soft rubber neck 905 to the airway 906 is gradually reduced, so as to prevent the cable port from entering the airway 906. At the same time, the cable port can also be blocked at the open end of the airway 906 by negative pressure adsorption to prevent the negative pressure environment from being destroyed. This is conducive to tightly adsorbing the multiple cables in the wire holes 901 in sequence. In this way, the rod holder 1 is convenient for carrying multiple cables through the pipeline.

[0031] A cable threading method of a cable threading device for cable installation, comprising the following steps: S1: First, multiple cables are connected to the wire holes 901 set on the cable adsorption cavity tube 9 in sequence, and the negative pressure suction machine 904 suctions the inside of the suction cavity 907 through the suction tube 903 and the negative pressure interface 902, so that the inside of the suction cavity 907 is in a negative pressure state, and the suction cavity 907 is connected with the wire holes 901 inside the cable adsorption cavity tube 9 through the airway 906, and the multiple cables are adsorbed in the inside of the wire holes 901 in sequence; S2: Secondly, the rod-piercing seat 1 is moved by using the pull-back seat 2 at the bottom of the rod-piercing seat 1 to pull the rear-drive wheel 201 backward. When pulling back, the first gear 203 and the second gear 204 are meshed with each other, and both forward and reverse rotations are meshed with each other. During the pulling back process, the fifth gear 207 moves downward and meshes with the sixth gear 208 on the large gear 209, and the fourth gear 206 is separated from the large gear 209. S3: When pulling back to accumulate force, the large gear 209 twists the torsion spring 213, so that the torsion spring 213 accumulates elastic potential energy. When released, the fifth gear 207 moves in the opposite direction and disengages from the sixth gear 208 on the large gear 209. The fourth gear 206 approaches the large gear 209 and engages with it. The elastic potential energy of the torsion spring 213 is used to drive the rear-drive wheel 201 to rotate. The pull-back seat 2 moves along the inside of the pipeline under the rolling of the rear-drive wheel 201, bringing multiple cables into the pipeline, thereby completing the cable threading.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable threading device for cable installation, characterized in that: It comprises a rod-penetrating seat (1), a pull-back seat (2) being fixedly mounted on the bottom of the rod-penetrating seat (1), and a gear set structure being arranged inside the pull-back seat (2); The gear set structure comprises a coupling shaft (202) installed inside a pull-back seat (2), rear-drive wheels (201) are installed at both left and right ends of the coupling shaft (202), a first gear (203) is arranged on the surface of the coupling shaft (202), a second gear (204) is arranged on one side of the first gear (203), a third gear (205) is fixedly connected to the rear wall of the second gear (204), a fourth gear (206) is installed above the third gear (205), and the second gear (204) is fixedly connected to the rear wall of the second gear (204). ) is installed on the left side of the large gear (209), and a limiting groove (211) is provided on the front side of the fifth gear (207); a sixth gear (208) is installed on the left side of the fifth gear (207), and a large gear (209) is integrally connected to the back of the sixth gear (208); a fixing plate (212) is fixedly connected to the center of the back surface of the large gear (209); a coil spring box (210) is installed on the back of the large gear (209), and a torsion spring (213) is installed inside the coil spring box (210); The outer side of the rod-piercing seat (1) is movably connected to a mounting bracket (3), and the top end of the mounting bracket (3) is connected to a roller seat (4); an air suction chamber (907) is mounted on the outer side of the roller seat (4) via a bracket, and the front end of the air suction chamber (907) is connected to a cable adsorption chamber tube (9); a wire hole (901) is fixedly opened at the end of the cable adsorption chamber tube (9); a negative pressure interface (902) is provided on the outer wall of the air suction chamber (907); an air suction pipe (903) is connected to the upper end of the negative pressure interface (902); a negative pressure suction machine (904) is mounted on the upper end of the air suction pipe (903); and the negative pressure suction machine (904) is fixedly mounted on the outer wall of the air suction chamber (907).

2. A cable threading device for cable installation according to claim 1, characterized in that: The large gear (209) is connected to each other via a fixing plate (212) and a torsion spring (213), and the large gear (209) and the sixth gear (208) are integrally fixedly connected.

3. A cable threading device for cable installation according to claim 1, characterized in that: The inner wall of the coil spring box (210) is provided with a clamping groove (214), and the clamping groove (214) and one end of the torsion spring (213) are in contact with each other.

4. A cable threading device for cable installation according to claim 1, characterized in that: The lower end of the mounting bracket (3) is rotatably connected to the rod-piercing seat (1), and the upper end of the mounting bracket (3) and the roller seat (4) are rotatably connected.

5. A cable threading device for cable installation according to claim 1, characterized in that: A micro telescopic cylinder (5) is movably connected in the middle of the surface of the roller seat (4), and a shock absorbing damping rod (6) is installed on one side of the micro telescopic cylinder (5), and a buffer spring (7) is arranged on the surface of the shock absorbing damping rod (6).

6. A cable threading device for cable installation according to claim 1, characterized in that: The outer sleeve of the roller seat (4) is provided with a rolling belt (8), and the roller seat (4) is distributed in a triangular shape with respect to the symmetric center line of the rod-piercing seat (1).

7. A cable threading device for cable installation according to claim 1, characterized in that: A front cover (10) is fixed to the front end of the rod-piercing seat (1), and a camera (12) is installed inside the front cover (10). A transparent protective cover (11) is fixed to the outside of the front cover (10) by screws.

8. A cable threading device for cable installation according to claim 1, characterized in that: A soft rubber neck opening (905) is provided inside the wire hole (901), and one end of the wire hole (901) is connected to an airway (906).

9. A cable threading device for cable installation according to claim 1, characterized in that: The interior of the wire hole (901) is connected to the interior of the air inhalation cavity (907) via the airway (906), and the wire hole (901) and the airway (906) are arranged in a one-to-one correspondence.

10. A cable threading method using a cable threading device for cable installation according to claim 1, characterized in that: The following steps are involved: S1: First, multiple cables are connected in sequence to the wire holes (901) provided on the cable adsorption cavity tube (9), and the negative pressure suction machine (904) suctions the interior of the suction cavity (907) through the suction tube (903) and the negative pressure interface (902), so that the interior of the suction cavity (907) is in a negative pressure state, and the suction cavity (907) is connected to the wire holes (901) inside the cable adsorption cavity tube (9) through the airway (906), and the multiple cables are adsorbed in sequence inside the wire holes (901); S2: Secondly, the rod-piercing seat (1) is moved by using the retracting seat (2) at the bottom of the rod-piercing seat (1) to pull the rear-drive wheel (201) backwards. When pulling back, the first gear (203) and the second gear (204) are meshed with each other, and both forward and reverse rotations are meshed with each other. During the pulling back process, the fifth gear (207) moves downward and meshes with the sixth gear (208) on the large gear (209), and the fourth gear (206) is disengaged from the large gear (209). S3: When pulling back to store force, the large gear (209) twists the torsion spring (213), so that the torsion spring (213) accumulates elastic potential energy. When releasing, the fifth gear (207) moves in the opposite direction and disengages from the sixth gear (208) on the large gear (209). The fourth gear (206) approaches the large gear (209) to engage with the large gear (209). The elastic potential energy of the torsion spring (213) is used to drive the rear drive wheel (201) to rotate. The pull-back seat (2) moves along the inside of the pipeline under the rolling of the rear drive wheel (201), bringing the multiple cables into the pipeline, thereby completing the cable threading.

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