Building electrical cable threading device

Abstract

The utility model relates to the technical field of building power cable construction, in particular to a building electrical cable threading device which comprises a threading box, a cable feeding pipe, a cable feeding block and a cable take-up mechanism, the cable take-up mechanism comprises a cable take-up shaft, a second connecting shaft and a motor, the cable take-up shaft is rotationally arranged in the threading box, one end of the cable take-up shaft is rotationally connected with the inner wall of the threading box, and the other end of the cable take-up shaft is rotationally connected with the second connecting shaft. The other end penetrates through the side wall of the threading box and is fixedly connected with a second connecting shaft, the end, away from the take-up shaft, of the second connecting shaft is connected with an output shaft of a motor, and a shell of the motor is fixed to the outer side of the threading box; the steel wire is wound on the take-up shaft, and the movable end of the steel wire is driven by the motor to sequentially penetrate through the transmission mechanism, the wire feeding pipe and the wire feeding block. The transmission mechanism and the wire feeding pipe are additionally arranged, so that a steel wire wound on the take-up mechanism sequentially penetrates through the transmission mechanism and the wire feeding pipe in the rotating process and is connected with the wire feeding block, the steel wire is effectively prevented from being too loose during loosening and take-up, the threading efficiency is improved, and a wire is easy to penetrate out.

Description

Technical Field

[0001] The utility model relates to the technical field of building power cable construction, specifically a building electrical cable threader. Background Technology

[0002] In the construction industry, workers are required to install many wires in pipes, then fix the pipes in the walls, and then cover the outside with concrete to make the interior decoration more beautiful. When passing the wires through the embedded pipes, a wire threader is needed. The wire threader is an excellent auxiliary tool that can pull the guide rope in the pipe. The wire threader has the functions of high tensile strength and strong bending performance. It can shuttle freely in narrow pipes, saving time, labor, and improving work efficiency.

[0003] CN219513675U discloses a building electrical wire threader, comprising: a base frame, a winding shaft is rotatably mounted on the top of the base frame, and circular plates are welded on both sides of the outer wall of the winding shaft, a winding cavity is formed between the two circular plates and the winding shaft, and a wire threader body is wound inside the winding cavity; the building electrical wire threader, because the wire threader body passes between the limiting wheel and the circular ring, when it moves, it moves in conjunction with the wire threader body to move forward and backward, so that when the wire threader body is rolled up, the wire threader body can be laid flat side by side on a plane of the winding cavity, and then rolled up on a plane toward the outside, so that the wire threader body is wound in the winding cavity in an orderly and uniform manner, and the wire threader body can be completely rolled up and stored in a limited space.

[0004] Existing cable threaders have the following problems in actual use: (1) When cable threaders are used to thread and reel in cables, the steel wire is often too loose when being loosened or tightened, resulting in cable threading failure. In this case, it takes more time to remove the wires and cables from the pre-buried pipe, affecting the efficiency of cable threading; (2) During the process of cable threading, the cable needs to be fixed in the cable threader, but the cable may be subjected to excessive force during the threading process, causing the cable to be damaged, affecting the use of the cable; in addition, the cable is fixed with tape during threading, and the cable may fall off during the threading process, resulting in cable threading failure. Contents of utility model

[0005] Aiming at the problem in the prior art that the wire loosening leads to the failure of wire threading, thus affecting the wire threading efficiency, the utility model provides a building electrical cable threader.

[0006] The utility model is realized through the following technical solutions:

[0007] A building electrical cable threading device, comprising a threading box, a wire delivery pipe, a wire delivery block, a wire winding mechanism and a transmission mechanism. The wire winding mechanism and the transmission mechanism are both arranged inside the threading box. The wire winding mechanism includes a wire winding shaft, a second connecting shaft and a motor. The wire winding shaft is rotatably arranged inside the threading box. One end of the wire winding shaft is rotatably connected to the inner wall of the threading box, and the other end penetrates through the side wall of the threading box and is fixedly connected to the second connecting shaft. The end of the second connecting shaft away from the wire winding shaft is connected to the output shaft of the motor, and the housing of the motor is fixed outside the threading box; a steel wire is wound around the wire winding shaft, and the movable end of the steel wire sequentially passes through the transmission mechanism, the wire delivery pipe and the wire delivery block under the drive of the motor; the transmission mechanism is located on the wire outlet side of the wire winding mechanism, and the second connecting shaft is connected to the input end of the transmission mechanism;

[0008] A wire delivery port is opened on one side wall of the threading box, and the steel wire passes out through the wire delivery port; the wire delivery pipe is located at the wire delivery port outside the threading box, and an auxiliary unit is arranged inside the wire delivery pipe, and the auxiliary unit is used to help the steel wire pass through the wire delivery pipe;

[0009] The end of the wire delivery pipe away from the wire delivery port is connected to the wire delivery block, and a fixing mechanism is arranged on the wire delivery block, and the fixing mechanism is used to fix the steel wire.

[0010] Preferably, the transmission mechanism includes a main transmission shaft, a slave transmission shaft and a belt transmission mechanism. The main transmission shaft and the slave transmission shaft are arranged in parallel and rotate up and down, and a gap for the steel wire to pass through is left between the main transmission shaft and the slave transmission shaft; the driving end of the belt transmission mechanism is connected to the second connecting shaft, and the output end of the belt transmission mechanism is connected to the main transmission shaft.

[0011] Preferably, an outer cover is arranged outside the threading box. The second connecting shaft is rotatably arranged inside the outer cover. The housing of the motor is fixed outside the outer cover, and the output shaft of the motor penetrates through the housing of the outer cover and is fixedly connected to the first connecting shaft.

[0012] Preferably, transmission drums are coaxially and fixedly sleeved outside the main transmission shaft and the slave transmission shaft, and a gap for the steel wire to pass through is left between the two transmission drums.

[0013] Preferably, the auxiliary unit includes a plurality of ball groups, and the ball groups are arranged at intervals and in parallel along the axis of the inner wall of the wire delivery pipe; each ball group includes two oppositely arranged first balls, and a channel for the steel wire to pass through is left between the two first balls.

[0014] Preferably, the auxiliary unit includes a plurality of elastic ball groups, and the ball groups are arranged at intervals and in parallel along the axis of the inner wall of the wire delivery pipe; each elastic ball group includes a plurality of elastic members and a plurality of second balls, and the elastic members and the second balls correspond one by one. The elastic members are arranged circumferentially along the inner wall of the wire delivery pipe and expand and contract along the radial direction of the wire delivery pipe; one end of the elastic member is connected to the inner wall of the wire delivery pipe, and the other end is connected to the second ball, and a channel for the steel wire to pass through is left between the plurality of first balls.

[0015] Preferably, an inner ring is provided on the inner wall of the wire delivery pipe. A plurality of mounting grooves are formed on the inner ring. The mounting grooves correspond to the elastic members one by one. The elastic members are located in the mounting grooves, and a part of the second ball is located in the mounting groove.

[0016] Preferably, the fixing mechanism includes a concave block, a clamping block, a rotating block and a rotating rod. The concave block is fixed on the wire delivery block, and a groove is formed on the concave block; the clamping block is arranged inside the groove, the rotating block is located below the concave block, one end of the rotating rod is connected to the rotating block, and the other end penetrates through the concave block and is connected to the clamping block; the steel wire passes between the concave block and the clamping block.

[0017] Preferably, a plurality of telescopic rods are provided below the wire threading box.

[0018] Preferably, a bottom plate is provided at one end of the telescopic rod away from the wire threading box.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] By providing an additional transmission mechanism and a wire delivery pipe, the steel wire wound on the wire take-up mechanism passes through the transmission mechanism and the wire delivery pipe in sequence during rotation and is connected to the wire delivery block, so that the steel wire is effectively prevented from being too loose during relaxation and recovery, the wire threading efficiency is improved, and the wire is easily threaded out.

[0021] Furthermore, by driving the belt transmission mechanism with a motor, the first pulley can drive the steel wire on the wire take-up shaft to be relaxed and transmitted, and at the same time, the second pulley can drive the transmission drum on the transmission shaft in the wire threading box to rotate, so that the steel wire passes between two mutually parallel transmission drums. The steel wire will not be slack during relaxation and recovery, and the wire threading effect is good.

[0022] Furthermore, an elastic telescopic member composed of an elastic member and a second ball is arranged in the wire threading pipe. The elastic telescopic member contacts the outer wall of the cable, preventing the cable from being damaged due to excessive force during wire threading, not affecting the use of the wire and cable, and improving safety.

[0023] Furthermore, when the cable passes through the wire threading pipe, it is fixed in the fixing mechanism. The fixing mechanism can effectively prevent the cable from falling off during the wire threading process, further improving the success rate of wire threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic side sectional view structure of the utility model;

[0025] Figure 2 It is a schematic front sectional view structure of the wire threading box and the transmission drum of the utility model;

[0026] Figure 3 It is a schematic top sectional view structure of the wire threading box of the utility model;

[0027] Figure 4 For the present utility model Figure 1 Schematic enlarged structure diagram at position A in

[0028] Figure 5 Schematic top view sectional structure diagram of the wire threading pipe of the present utility model.

[0029] In the figure, 1. wire threading box; 2. wire feeding pipe; 3. wire threading pipe; 4. first ball; 5. steel wire; 6. driving roller; 7. bottom plate; 8. telescopic rod; 9. handle; 10. wire feeding block; 11. outer cover; 12. first pulley; 13. first connecting shaft; 14. main transmission shaft; 15. motor; 16. second connecting shaft; 17. second pulley; 18. wire take-up shaft; 19. second ball; 20. elastic member; 21. installation groove; 22. concave block; 23. clamping block; 24. rotating block; 25. rotating rod. Specific embodiments

[0030] The following further describes the present utility model in detail with reference to specific embodiments, which is an explanation rather than a limitation of the present utility model.

[0031] Embodiment 1

[0032] The present utility model discloses a building electrical cable wire threading device. Referring to Figure 1 , 2 , it includes a wire threading box 1, a wire feeding pipe 2, a wire feeding block 10, a wire take-up mechanism and a transmission mechanism. The wire take-up mechanism and the transmission mechanism are both arranged inside the wire threading box 1. The wire take-up mechanism includes a wire take-up shaft 18, a second connecting shaft 16 and a motor 15. The wire take-up shaft 18 is rotatably arranged inside the wire threading box 1. One end of the wire take-up shaft 18 is rotatably connected to the inner wall of the wire threading box 1, and the other end penetrates through the side wall of the wire threading box 1 and is fixedly connected to the second connecting shaft 16. The end of the second connecting shaft 16 away from the wire take-up shaft 18 is connected to the output shaft of the motor 15, and the housing of the motor 15 is fixed outside the wire threading box 1; the steel wire 5 is wound around the wire take-up shaft 18, and the movable end of the steel wire 5 sequentially passes through the transmission mechanism, the wire feeding pipe 2 and the wire feeding block 10 under the drive of the motor 15; the transmission mechanism is located on the wire outlet side of the wire take-up mechanism, and the second connecting shaft 16 is connected to the input end of the transmission mechanism. An outer cover 11 is arranged outside the wire threading box 1. The second connecting shaft 16 is rotatably arranged inside the outer cover 11, the housing of the motor 15 is fixed outside the outer cover 11, and the output shaft of the motor 15 penetrates through the housing of the outer cover 11 and is fixedly connected to the first connecting shaft 13.

[0033] In this embodiment, the wire threading box 1 has a cuboid structure. An outer cover 11 is provided on the outer wall of the wire threading box 1. The outer cover 11 and the outer wall of the wire threading box 1 form a placement cavity. The second connecting shaft 16 is placed in the placement cavity outside the wire threading box 1. The take-up shaft 18 is horizontally placed between two symmetric side walls inside the wire threading box 1, that is, the take-up shaft 18 is horizontally placed between the left side wall and the right side wall inside the wire threading box 1. The second connecting shaft 16 and the take-up shaft 18 are located on the same axis. The left end of the take-up shaft 18 is connected to the inner wall of the wire threading box 1 through a bearing. The right end of the second connecting shaft 16 is connected to the inner wall of the outer cover 11 through a bearing. The right end of the take-up shaft 18 is connected to the left end of the second connecting shaft 16 through a bearing. The motor 15 is placed on the outer wall of the outer cover 11. The output shaft of the motor 15 is connected to the right end of the second connecting shaft 16. The motor 15 drives the second connecting shaft 16 to rotate, and then drives the take-up shaft 18 to rotate to realize wire pay-out and wire take-up.

[0034] Refer to Figure 2 、 3 , the transmission mechanism includes a main transmission shaft 14, a secondary transmission shaft and a belt transmission mechanism. The main transmission shaft 14 and the secondary transmission shaft are arranged to rotate parallel to each other up and down, and there is a gap for the steel wire 5 to pass through between the main transmission shaft 14 and the secondary transmission shaft; transmission drums 6 are coaxially and fixedly sleeved on the outer sides of the main transmission shaft 14 and the secondary transmission shaft, and there is a gap between the two transmission drums 6 for the steel wire 5 to pass through.

[0035] In order to facilitate driving the transmission mechanism to rotate synchronously during wire pay-out and wire take-up, a second pulley 17 is sleeved on the second connecting shaft 16. The second pulley 17 drives the transmission mechanism to rotate synchronously through a belt. The driving end of the belt transmission mechanism is connected to the second connecting shaft 16, and the output end of the belt transmission mechanism is connected to the main transmission shaft 14. In this embodiment, the belt transmission mechanism includes a belt, a first connecting shaft 13, a first pulley 12 and a second pulley 17. The second pulley 17 is fixed on the second transmission shaft, the first pulley 12 is fixed on the first connecting shaft 13. One end of the first connecting shaft 13 is rotationally connected to the inner wall of the outer cover 11 through a bearing, and the other end is fixedly connected to the main transmission shaft 14.

[0036] In this embodiment, the main transmission shaft 14 and the driven transmission shaft are both placed in the wire threading box 1. The axial direction of the main transmission shaft 14 is parallel to the axial direction of the wire take-up shaft 18, that is, the transmission shafts are horizontally placed between two symmetric side walls in the wire threading box 1, and the transmission shafts are horizontally placed between the left side wall and the right side wall in the wire threading box 1. The left end and the right end of the driven transmission shaft are both connected to the opposite side walls of the wire threading box 1 through bearings. The left end of the main transmission shaft 14 is connected to the left side wall of the wire threading box 1 through a bearing, and its right end is connected to the first connecting shaft 13 through a bearing. The first connecting shaft 13 is placed in the placement cavity outside the wire threading box 1. The first connecting shaft 13 and the main transmission shaft 14 are on the same axis. The right end of the first connecting shaft 13 is connected to the inner wall of the outer cover 11 through a bearing, and the right end of the main transmission shaft 14 is connected to the left end of the first connecting shaft 13 through a bearing. When the second connecting shaft 16 rotates, the second pulley 17 rotates together with the second connecting shaft 16, and then drives the first pulley 12 to drive the first connecting shaft 13 to rotate synchronously, and finally drives the main transmission shaft 14, the driven main shaft and the corresponding transmission drum 6 to rotate synchronously. In this way, when the steel wire 5 passes through the mutually parallel transmission drums 6, it can prevent the steel wire 5 from being too loose when being relaxed and recovered, affecting the wire threading effect. The motor 15 drives the second pulley 17 on the second connecting shaft 16 to rotate. The second pulley 17 drives the first pulley 12 on the first connecting shaft 13 to rotate through a belt, so that the first pulley 12 can drive the steel wire 5 on the wire take-up shaft 18 to be relaxed and conveyed. At the same time, the second pulley 17 can drive the transmission drum 6 on the transmission shaft in the wire threading box 1 to rotate, so that the steel wire 5 passes between the two mutually parallel transmission drums 6. The steel wire 5 will not be slack when being relaxed and recovered, and the wire threading effect is good.

[0037] When the two transmission drums 6 are arranged, in order to ensure that the steel wire 5 can pass between two adjacent transmission drums 6, the gap between the two transmission drums 6 is slightly larger than the outer diameter of the steel wire 5, such as 1-2 μm is sufficient.

[0038] A wire feeding port is opened on one side wall of the wire threading box 1, and the steel wire 5 passes out through the wire feeding port; rubber gaskets are provided at the wire outlet of the wire threading box 1. The steel wire 5 passing between the two transmission drums 6 passes through the opening on the side wall of the wire threading box 1 and then enters the wire feeding pipe 2.

[0039] The wire feeding pipe 2 is located at the wire feeding port outside the wire threading box 1. An auxiliary unit is arranged inside the wire feeding pipe 2, and the auxiliary unit is used to help the steel wire 5 pass through the wire feeding pipe 2. Refer to Figure 1, the auxiliary unit includes a plurality of ball sets which are arranged parallel to each other at intervals along the axis of the inner wall of the wire feeding tube 2; each ball set includes two oppositely arranged first balls 4, and a channel for the steel wire 5 to pass through is left between the two first balls 4. The steel wire 5 passes through the middle of the relatively multiple first balls 4 along the axial direction of the wire feeding tube 2. In this embodiment, the wire feeding tube 2 is a cylindrical tubular structure, and its inner diameter is larger than the outer diameter of the steel wire 5. Inside the wire feeding tube 2, with the central axis of the wire feeding tube 2 as the reference, the first balls 4 are mirror-symmetrically arranged on the inner wall of the wire feeding tube 2 on the symmetric side of the central axis. The multiple first balls 4 are evenly distributed along the axial direction of the wire feeding tube 2, which is convenient for the steel wire 5 to pass through the wire threading box 1 and enter the wire feeding tube 2. At the same time, the first balls 4 on the inner wall of the wire feeding tube 2 at this time can prevent the steel wire 5 from being damaged during the transmission process, will not affect the use of the steel wire 5, and ensure the safety of the steel wire 5 during use.

[0040] One end of the wire feeding tube 2 away from the wire feeding port is connected to the wire feeding block 10, and a fixing mechanism is arranged on the wire feeding block 10 for fixing the steel wire 5. Refer to Figure 4 , the fixing mechanism includes a concave block 22, a clamping block 23, a rotating block 24 and a rotating rod 25. The concave block 22 is fixed on the wire feeding block 10, and a groove is opened on the concave block 22; the clamping block 23 is arranged inside the groove, the rotating block 24 is located below the concave block 22, one end of the rotating rod 25 is connected to the rotating block 24, and the other end penetrates through the concave block 22 and is connected to the clamping block 23; the steel wire 5 passes between the concave block 22 and the clamping block 23. In this embodiment, a bearing is arranged at the connection between the concave block 22 and the rotating rod 25, an internal thread is arranged inside the bearing, and an external thread matching the internal thread of the bearing is arranged on the surface of the rotating rod 25. The clamping block 23 is inside the concave block 22, and the rotating block 24 is placed outside the concave block 22. By screwing the rotating block 24, the clamping block 23 at the other end of the rotating rod 25 fixes the cable on the side wall of the wire feeding block 10, so as to prevent the cable fixed with tape from falling off during the wire threading process, thereby ensuring the success of wire threading.

[0041] See Figure 1 , a handle 9 is arranged on the top of the wire threading box 1, which is convenient to lift the wire threading box 1 through the handle 9.

[0042] A plurality of telescopic rods 8 are arranged below the wire threading box 1, and a bottom plate 7 is arranged at one end of the telescopic rod 8 away from the wire threading box 1. In this embodiment, four telescopic rods 8 are provided and are located at the four corners of the wire threading box 1. The axial direction of the telescopic rod 8 is in the vertical direction. The telescopic rod 8 is arranged against the inner wall of the wire threading box 1, and the telescopic end of the telescopic rod 8 passes through the bottom surface of the wire threading box 1 and is connected to the bottom plate 7. During implementation, the number of the bottom plates 7 and the telescopic rods 8 is the same, and they are arranged and connected in a one-to-one correspondence. When in use, the wire threading box 1 is transferred to the wire threading position through the handle 9, and then the telescopic rod 8 is started to drive the wire threading box 1 to move away from or close to the bottom plate 7, so as to adjust the height of the wire threading box 1 relative to the position of the pipe 3 to be threaded, which can prevent the problem that the worker needs to hold the wire threading box 1 by hand during the wire threading process, resulting in hand fatigue. It not only saves time and effort but also improves safety.

[0043] Embodiment 2

[0044] The difference from Embodiment 1 is that, referring to Figure 5 , the auxiliary unit includes a plurality of elastic ball groups, and the ball groups are arranged in parallel at intervals along the axis of the inner wall of the wire delivery pipe 2; each elastic ball group includes a plurality of elastic members 20 and a plurality of second balls 19, and the elastic members 20 and the second balls 19 are in one-to-one correspondence. The elastic members 20 are arranged along the circumferential direction of the inner wall of the wire delivery pipe 2, and the elastic members 20 expand and contract along the radial direction of the wire delivery pipe 2, that is, the axis of the elastic member 20 is perpendicular to the axis of the wire threading pipe 3; one end of the elastic member 20 is connected to the inner wall of the wire delivery pipe 2, and the other end is connected to the second ball 19. A passage for the steel wire 5 to pass through is left between the plurality of first balls 4.

[0045] For the convenience of setting the elastic telescopic members, installation grooves 21 are opened on the inner wall of the wire threading pipe 3; preferably, an inner ring is arranged on the inner wall of the wire delivery pipe 2, and a plurality of installation grooves 21 are opened on the inner ring. The installation grooves 21 correspond to the elastic members 20 one by one. The elastic members 20 are located in the installation grooves 21, and a part of the second balls 19 is located in the installation grooves 21. One end of the elastic member 20 is fixed in the installation groove 21, and the other end of the elastic member 20 is connected to the second ball 19. In this embodiment, one elastic member 20 and one second ball 19 form an elastic telescopic member, and the number of the elastic telescopic members is 3 to 10 or more than 10. Among them, the elastic member 20 is a spring, or it can also be a connecting member made of a rubber column or other elastic materials. More preferably, there are eight elastic telescopic members, and the eight elastic telescopic members are evenly distributed on the cross section of the wire threading pipe 3. An inner ring is provided in the wire threading pipe 3, and eight installation grooves 21 are evenly provided in the inner ring of the wire threading pipe 3. An elastic member 20 is installed in each installation groove 21, and the other ends of the elastic members 20 are all connected to the second balls 19. When the electric wire passes through the wire threading pipe 3, the elastic members 20 and the second balls 19 can prevent the electric wire from being damaged due to excessive force.

[0046] During use, the worker lifts the wire threading box 1 to the wire threading position, then starts the telescopic rod 8 to drive the bottom plate 7 to move, jacking up the wire threading box 1 to the wire threading height, preventing the worker from holding the wire threading box 1 by hand for a long time, which may cause hand fatigue; then put the wire feeding block 10 and the wire threading pipe 3 into the left end of the embedded pipe, start the motor 15 to drive the second connecting shaft 16 and the second pulley 17 to rotate, and the second pulley 17 drives the first pulley 12 on the first connecting shaft 13 to rotate through the belt, which can make the second pulley 17 drive the steel wire 5 on the wire winding shaft 18 to be released and transmitted. At the same time, the first pulley 12 can drive the transmission roller 6 on the transmission shaft 14 in the wire threading box 1 to rotate, so that the steel wire 5 passes through between the mutually parallel transmission rollers 6, preventing the steel wire 5 from being too loose during relaxation and recovery, which may affect the wire threading effect; when the steel wire 5 moves in the wire feeding pipe 2, under the action of the first ball 4, the steel wire 5 will not be worn during transmission. Finally, the steel wire 5 drives the wire feeding block 10 and the wire threading pipe 3 to emerge from the right end of the embedded pipe together, and then turn off the motor 15;

[0047] Then pass the cable to be wired through the wire threading pipe 3. Under the action of the spring 20 and the second ball 19, it can prevent the cable from being damaged due to excessive force. The cable starts from the right end of the wire threading pipe 3, then passes through the left end of the wire threading pipe 3, and then is stuck in the concave block 22 on the wire feeding block 10. At the same time, tie the cable to the wire threading pipe 3 with tape. Finally, turn the rotating block 24 to drive the clamping block 23 at the other end of the rotating rod 25 to fix the cable on the side wall of the wire feeding block 10, preventing the cable from falling off during the wire threading process; then reverse the motor 15 again to drive the wire winding shaft 18 to reverse and recover the steel wire 5. The recovery of the steel wire 5 drives the wire feeding block 10 to also move to the left end of the embedded pipe. Since the cable is connected to the wire feeding block 10 and the wire threading pipe 3 as a whole, the cable moves from the right end of the embedded pipe to the left end of the embedded pipe and finally passes through the left end of the embedded pipe, making the cable successfully pass through the embedded pipe. After the wire threading is completed, take out the wire feeding block 10 and the wire threading pipe 3 from the wire.

[0048] The above is only the preferred embodiment of the present invention, and it is not used to limit the technical solution of the present invention. Those skilled in the art should understand that without departing from the spirit and principle of the present invention, the technical solution can be modified and replaced simply. These modifications and replacements also fall within the protection scope covered by the claims.

Claims

1. A building electrical cable threader, characterized in that: The invention comprises a wire threading box (1), a wire feeding tube (2), a wire feeding block (10), a wire taking-up mechanism and a transmission mechanism. The wire taking-up mechanism and the transmission mechanism are both arranged in the wire threading box (1). The wire taking-up mechanism comprises a wire taking-up shaft (18), a second connecting shaft (16) and a motor (15). The wire taking-up shaft (18) is rotatably arranged in the wire threading box (1). One end of the wire taking-up shaft (18) is rotatably connected to the inner wall of the wire threading box (1), and the other end passes through the side wall of the wire threading box (1) and is fixedly connected to the second connecting shaft (16). The second connecting shaft (16) is connected to the output shaft of the motor (15) at one end away from the wire taking-up shaft (18), and the housing of the motor (15) is fixed to the outside of the wire threading box (1); the steel wire (5) is wound on the wire taking-up shaft (18), and the movable end of the steel wire (5) passes through the transmission mechanism, the wire feeding tube (2) and the wire feeding block (10) in sequence under the drive of the motor (15); the transmission mechanism is located at the wire outlet side of the wire taking-up mechanism, and the second connecting shaft (16) is connected to the input end of the transmission mechanism; A wire feeding port is provided on one side wall of the wire threading box (1), and the steel wire (5) passes through the wire feeding port; a wire feeding tube (2) is located at the wire feeding port outside the wire threading box (1), and an auxiliary unit is provided inside the wire feeding tube (2), and the auxiliary unit is used to help the steel wire (5) pass through the wire feeding tube (2); One end of the wire feeding pipe (2) away from the wire feeding port is connected to the wire feeding block (10), and a fixing mechanism is arranged on the wire feeding block (10), and the fixing mechanism is used to fix the steel wire (5).

2. The building electrical cable threader according to claim 1, characterized in that: The transmission mechanism comprises a main transmission shaft (14), a slave transmission shaft and a belt transmission mechanism. The main transmission shaft (14) and the slave transmission shaft are arranged to rotate up and down in parallel, and a gap is left between the main transmission shaft (14) and the slave transmission shaft for the steel wire (5) to pass through. The driving end of the belt transmission mechanism is connected to the second connecting shaft (16), and the output end of the belt transmission mechanism is connected to the main transmission shaft (14).

3. The building electrical cable threader according to claim 2, characterized in that: An outer cover (11) is arranged on the outside of the threading box (1), a second connecting shaft (16) is rotatably arranged inside the outer cover (11), a housing of a motor (15) is fixed on the outside of the outer cover (11), and an output shaft of the motor (15) passes through the housing of the outer cover (11) and is fixedly connected to the first connecting shaft (13).

4. The building electrical cable threader according to claim 2, characterized in that: The main transmission shaft (14) and the secondary transmission shaft are both coaxially and fixedly sleeved with transmission rollers (6), and a gap is left between the two transmission rollers (6) for the steel wire (5) to pass through.

5. The building electrical cable threader according to claim 1, characterized in that: The auxiliary unit comprises a plurality of ball groups, which are arranged in parallel and at intervals along the inner wall axis of the wire feeding tube (2); the ball group comprises two first balls (4) arranged opposite to each other, and a channel for the steel wire (5) to pass through is left between the two first balls (4).

6. The building electrical cable threader according to claim 1, characterized in that: The auxiliary unit comprises a plurality of elastic ball groups, which are arranged in parallel and at intervals along the axis of the inner wall of the wire feeding tube (2); the elastic ball group comprises a plurality of elastic members (20) and a plurality of second balls (19), the elastic members (20) and the second balls (19) correspond to each other one by one, the elastic members (20) are arranged circumferentially along the inner wall of the wire feeding tube (2), and the elastic members (20) are extended and retracted along the radial direction of the wire feeding tube (2); one end of the elastic member (20) is connected to the inner wall of the wire feeding tube (2), and the other end is connected to the second ball (19), and a channel for the steel wire (5) to pass through is reserved between the plurality of first balls (4).

7. The building electrical cable threader according to claim 6, characterized in that: An inner ring is arranged on the inner wall of the wire feeding tube (2), and a plurality of mounting grooves (21) are provided on the inner ring. The mounting grooves (21) correspond to the elastic members (20) one by one, the elastic members (20) are located in the mounting grooves (21), and a portion of the second ball bearing (19) is located in the mounting grooves (21).

8. The building electrical cable threader according to claim 1, characterized in that: The fixing mechanism comprises a concave block (22), a clamping block (23), a rotating block (24) and a rotating rod (25); the concave block (22) is fixed on the wire feeding block (10); a groove is provided on the concave block (22); the clamping block (23) is arranged inside the groove; the rotating block (24) is located below the concave block (22); one end of the rotating rod (25) is connected to the rotating block (24); the other end passes through the concave block (22) and is connected to the clamping block (23); the steel wire (5) passes between the concave block (22) and the clamping block (23).

9. The building electrical cable threader according to claim 1, characterized in that: A plurality of telescopic rods (8) are arranged below the wire threading box (1).

10. The building electrical cable threader according to claim 9, characterized in that: A bottom plate (7) is provided at one end of the telescopic rod (8) away from the wire threading box (1).

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