A cable guiding and threading device for electrical construction

Abstract

The present invention discloses a cable guiding and threading device for electrical construction, belonging to the technical field of electrical construction, which includes a traction head housing, a traction assembly, a lateral support assembly and an elastic locking assembly. Among them, the lateral support assembly is arranged in the traction head housing. The lateral support assembly includes an unfolding drive mechanism, and the unfolding drive mechanism is connected to the traction assembly. The unfolding drive mechanism is used to drive the unfolding and folding of the lateral support assembly through the pushing and pulling of the traction assembly. The elastic locking assembly is arranged at one end of the traction head housing. The elastic locking assembly includes a locking collar, and the locking collar is connected to the traction assembly. One end of the traction assembly passes through the traction head housing and the other end is connected to the output end of the threading device. The present invention separates the cables in the pipeline by controlling the unfolding of the lateral support assembly, provides an open threading space for the traction head housing, and realizes the rapid and stable docking of the cables through the elastic locking assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical construction, and specifically refers to a cable guiding threading device for electrical construction. Background Art

[0002] When conducting line construction, usually a wire installer uses a threading device to extend from one end of a pipeline to the other end, and then winds one end of the wire to be wired around the threading device, and pulls out the threading device, so that the wire is pulled out in the reverse direction along the threading path to complete the wiring.

[0003] However, for the work of additionally inserting a cable into a pipeline that has been installed internally, inserting the traction end into the pipeline with existing cables inside, especially for cables distributed in a staggered manner, will increase the friction and obstruction of the cables inside the pipeline on the traction end, which easily causes the traction end to be difficult to penetrate the pipeline. Furthermore, it makes it difficult for the existing traction end to perform the threading work for the pipeline with existing cables inside, and the fixing effect is not good when using the method of winding and fixing on the traction end during the process of pulling the cable. It is easy for the cable to fall off under large resistance, reducing the construction efficiency of cable layout. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the present invention provides a cable guiding threading device for electrical construction. By controlling the expansion of the lateral support assembly, the cables in the pipeline are separated, providing an open threading space for the traction head housing, and realizing the rapid and stable docking of the cables through the elastic locking assembly.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a cable guiding threading device for electrical construction, including a traction head housing, a traction assembly, a lateral support assembly, and an elastic locking assembly. Among them, the lateral support assembly is arranged inside the traction head housing. The lateral support assembly includes an expansion driving mechanism, and the expansion driving mechanism is connected to the traction assembly. The expansion driving mechanism is used to drive the expansion and folding of the lateral support assembly through the pushing and pulling of the traction assembly. The elastic locking assembly is arranged at one end of the traction head housing. The elastic locking assembly includes a locking collar, and the locking collar is connected to the traction assembly. One end of the traction assembly passes through the traction head housing and the other end is connected to the output end of the threading device.

[0006] Furthermore, a traction port is opened at one end of the traction head housing. The traction assembly includes a traction cable, a connector, and a traction rod. One end of the traction cable passes through the traction port and is connected to the output end of the threading device. The other end of the traction cable is connected to one end of the traction rod through the connector. The other end of the traction rod extends into the traction head housing, and a limiting portion is arranged at the other end of the traction rod.

[0007] Furthermore, the unfolding drive mechanism is arranged on the towing bar. The unfolding drive mechanism includes: a support plate, a towing plate and a towing tooth plate. Among them, the support plate is fixedly sleeved at one end of the towing bar, the towing plate is fixedly connected to both ends of the support plate, a limiting slide bar penetrates through one end of the towing plate, the limiting slide bar is fixedly connected to one end of the towing tooth plate, a limiting spring is sleeved on the limiting slide bar, one end of the limiting spring abuts against one end of the towing tooth plate, and the other end of the limiting spring abuts against the towing plate.

[0008] Furthermore, the towing tooth plate meshes with one side of the transmission gear, and the transmission gears are symmetrically arranged on the upper and lower inner walls of the towing head housing through mounting seats.

[0009] Furthermore, the lateral support assembly further includes an unfolding transmission member and a support member. Among them, the unfolding transmission member is arranged inside the towing head housing, the unfolding transmission member is movably sleeved on the towing bar, first rack portions are arranged on the upper and lower surfaces of the unfolding transmission member, the first rack portions mesh with the other side of the transmission gear, second rack portions are provided on both sides of the unfolding transmission member, the support members are symmetrically distributed on both sides of the towing head housing, and the support member includes an engaging portion, a swing rod and a roller. Among them, the engaging portion is rotatably arranged on the side opening, the engaging portion meshes with the second rack portion, the side opening is opened on both sides of the towing head housing, one end of the swing rod is fixedly connected to the engaging portion, and the roller is rotatably arranged at the other end of the swing rod.

[0010] Furthermore, the elastic locking assembly includes a cable docking port, a locking collar and a support spring. Among them, the cable docking port is fixedly connected to the other end of the towing head housing, a limiting protrusion is arranged at the end of the cable docking port, mounting openings are opened on both the upper and lower sides of the cable docking port, a clamping block is rotatably connected inside the mounting opening, a driven engaging portion is arranged at one end of the clamping block, and a gear tooth portion is arranged at the other end of the clamping block. The locking collar is movably sleeved on the cable docking port, a connecting collar, a pull rod and a locking engaging portion are arranged on the locking collar. Among them, the locking engaging portion is opened on the inner walls of both the upper and lower sides of the locking collar, the locking engaging portion meshes with the driven engaging portion, the pull rods are distributed up and down on one side of the locking collar, one end of the pull rod is fixedly connected to one side of the locking collar, the other end of the pull rod passes through the through hole and is fixedly connected to the extension portion, the extension portion is opened at both the upper and lower ends of the connecting collar, the connecting collar is movably sleeved on the other end of the towing bar and is in movable abutment with the limiting portion, and the support spring is sleeved on the cable docking port, one end of the support spring abuts against the limiting protrusion, and the other end of the support spring is connected to the locking collar.

[0011] Furthermore, a cylindrical protrusion is arranged on one side surface of the towing plate, and the cylindrical protrusion is slidably connected to the sliding groove, and the sliding groove is opened on the side walls of both sides of the towing head housing.

[0012] Furthermore, two support members are provided on each side, and the two support members are distributed front and back and are at the same swing angle.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows:

[0014] The lateral support assembly is deployed under the traction assembly to separate the cables in the pipeline and press them under the traction head housing, providing an open threading space for the cables, effectively avoiding complex and crisscrossed lines from blocking the smooth threading. When the cables are docked and pulled, the elastic locking assembly is used to achieve fast and stable docking of the cables, and the pulling and cooperation of the traction assembly further turns the elastic locking assembly into a rigid lock, so that the cables are stably pulled and the smooth threading is ensured.

[0015] The traction rod is connected with the traction cable through the adapter, and can be used as the driving part of the lateral support assembly and the elastic locking assembly. The traction cable pushes and pulls the traction rod to realize the expansion and contraction of the lateral support assembly, which can effectively realize that when the traction head shell is extended into the pipeline, the support member provided with rollers is kept expanded, and the line is pressed under the traction head shell to separate it, which provides convenience for the smooth threading of the traction head shell. When the traction head shell is connected to the cable to be threaded, after the cable is connected through the elastic locking assembly, the traction rod further pulls the locking ring through the pulling force of the traction cable, so that it is always tightly fitted to one end of the traction head shell during the threading process, so that the elastic locking becomes a hard locking, and the locking mechanism of the locking ring is prevented from loosening due to friction, thereby ensuring the stability of cable traction.

[0016] The elastically retractable limiting slide bar mechanism used between the traction plate and the traction tooth plate can allow the traction tooth plate to elastically contract on the traction plate through the limiting slide bar when the support member is unfolded and threaded and is subjected to hard collision and extrusion or pipeline corners during the unfolding process of the traction rod controlling the unfolding drive mechanism in cooperation with the lateral support assembly. This allows the support member to adaptively unfold and contract to adapt to various situations in the pipeline.

[0017] The locking engagement portion on the locking collar cooperates with the clamping block installed on the cable docking port, so that the cables can be locked by directly inserting them when docking. The clamping block with a gear portion cooperates with its structure to effectively prevent the cable from slipping and ensure the stable connection of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of a cable guiding and threading device for electrical construction proposed by the present invention;

[0019] Figure 2 This is a structural disassembly diagram of a cable guiding and threading device for electrical construction proposed by the present invention;

[0020] Figure 3 This is a structural schematic diagram of a lateral support assembly of a cable guiding and threading device for electrical construction proposed by the present invention;

[0021] Figure 4 The three-dimensional structure diagram of the traction component of a cable guiding and threading device for electrical construction proposed by the present invention;

[0022] Figure 5 The three-dimensional structure diagram of the deployment transmission member of a cable guiding and threading device for electrical construction proposed by the present invention;

[0023] Figure 6 The three-dimensional structure diagram of the support member of a cable guiding and threading device for electrical construction proposed by the present invention;

[0024] Figure 7 The three-dimensional structure diagram of the locking collar of a cable guiding and threading device for electrical construction proposed by the present invention;

[0025] Figure 8 The sectional structure schematic diagram of the locking collar of a cable guiding and threading device for electrical construction proposed by the present invention;

[0026] Figure 9 The sectional structure schematic diagram of the traction head housing of a cable guiding and threading device for electrical construction proposed by the present invention;

[0027] Figure 10 The internal structure sectional view of a cable guiding and threading device for electrical construction proposed by the present invention;

[0028] Figure 11 is Figure 10 The enlarged view of the structure at A in

[0029] Among them, 1. Traction head housing; 2. Traction component; 3. Lateral support component; 4. Deployment drive mechanism; 5. Deployment transmission member; 6. Support member; 7. Elastic locking component; 8. Traction cable; 9. Adapter; 10. Traction rod; 11. Support plate; 12. Traction plate; 13. Limit spring; 14. Limit slide rod; 15. Traction tooth plate; 16. Cylindrical protrusion; 17. Limiting part; 18. Second rack part; 19. First rack part; 20. Meshing part; 21. Swing rod; 22. Roller; 23. Locking collar; 24. Pull rod; 25. Connecting collar; 26. Locking meshing part; 27. Cable docking port; 28. Traction port; 29. Block; 30. Installation port; 31. Limiting protrusion; 32. Support spring; 33. Chute; 34. Side opening; 35. Transmission gear; 36. Mounting seat; 37. Extension part; 38. Driven meshing part; 39. Through hole; 40. Tooth part.

[0030] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0033] As Figures 1 - 11 shown, the present invention provides a cable guiding and threading device for electrical construction, including a traction head housing 1, a traction assembly 2, a lateral support assembly 3 and an elastic locking assembly 7. Among them, the lateral support assembly 3 is arranged in the traction head housing 1. The lateral support assembly 3 includes an unfolding drive mechanism 4, and the unfolding drive mechanism 4 is connected to the traction assembly 2. The unfolding drive mechanism 4 is used to drive the unfolding and folding of the lateral support assembly 3 through the pushing and pulling of the traction assembly 2. The elastic locking assembly 7 is arranged at one end of the traction head housing 1. The elastic locking assembly 7 includes a locking collar 23, and the locking collar 23 is connected to the traction assembly 2. One end of the traction assembly 2 passes through the traction head housing 1 and the other end is connected to the output end of the threading device.

[0034] In an embodiment of the present invention, a traction port 28 is opened at one end of the traction head housing 1. The traction assembly 2 includes a traction cable 8, a connector 9 and a traction rod 10. One end of the traction cable 8 passes through the traction port 28 and is connected to the output end of the threading device. The other end of the traction cable 8 is connected to one end of the traction rod 10 through the connector 9. The other end of the traction rod 10 extends into the traction head housing 1, and a limiting portion 17 is arranged at the other end of the traction rod 10.

[0035] In an embodiment of the present invention, the unfolding drive mechanism 4 is arranged on the traction rod 10. The unfolding drive mechanism 4 includes: a support plate 11, a traction plate 12 and a traction tooth plate 15. Among them, the support plate 11 is fixedly sleeved at one end of the traction rod 10. The traction plate 12 is fixedly connected to both ends of the support plate 11. One end of the traction plate 12 is provided with a limiting slide bar 14, and the limiting slide bar 14 is fixedly connected to one end of the traction tooth plate 15. A limiting spring 13 is sleeved on the limiting slide bar 14. One end of the limiting spring 13 abuts against one end of the traction tooth plate 15, and the other end of the limiting spring 13 abuts against the traction plate 12.

[0036] In an embodiment of the present invention, the traction tooth plate 15 meshes with one side of the transmission gear 35, and the transmission gear 35 is symmetrically arranged on the upper and lower inner walls of the traction head housing 1 through the mounting seat 36.

[0037] In an embodiment of the present invention, the lateral support assembly 3 further includes an unfolding transmission member 5 and a support member 6. Among them, the unfolding transmission member 5 is arranged inside the traction head housing 1, the unfolding transmission member 5 is movably sleeved on the traction rod 10, the upper and lower surfaces of the unfolding transmission member 5 are provided with a first rack portion 19, the first rack portion 19 meshes with the other side of the transmission gear 35, the two sides of the unfolding transmission member 5 are provided with a second rack portion 18, the support members 6 are symmetrically distributed on both sides of the traction head housing 1, and the support member 6 includes an engaging portion 20, a swing rod 21 and a roller 22. Among them, the engaging portion 20 is rotatably arranged on the side opening 34, the engaging portion 20 meshes with the second rack portion 18, the side opening 34 is opened on both sides of the traction head housing 1, one end of the swing rod 21 is fixedly connected to the engaging portion 20, and the roller 22 is rotatably arranged at the other end of the swing rod 21.

[0038] In an embodiment of the present invention, the elastic locking assembly 7 includes a cable docking port 27, a locking collar 23 and a support spring 32. Among them, the cable docking port 27 is fixedly connected to the other end of the traction head housing 1, a limiting protrusion 31 is arranged at the end of the cable docking port 27, mounting ports 30 are opened on the upper and lower sides of the cable docking port 27, a clamping block 29 is rotatably connected in the mounting port 30, a driven engaging portion 38 is arranged at one end of the clamping block 29, and a tooth portion 40 is arranged at the other end of the clamping block 29. The locking collar 23 is movably sleeved on the cable docking port 27, and a connecting collar 25, a pull rod 24 and a locking engaging portion 26 are arranged on the locking collar 23. Among them, the locking engaging portion 26 is opened on the upper and lower inner walls of the locking collar 23, the locking engaging portion 26 meshes with the driven engaging portion 38, the pull rods 24 are distributed up and down on one side of the locking collar 23, one end of the pull rod 24 is fixedly connected to one side of the locking collar 23, the other end of the pull rod 24 passes through the through hole 39 and is fixedly connected to the extension portion 37, the extension portion 37 is opened at the upper and lower ends of the connecting collar 25, the connecting collar 25 is movably sleeved on the other end of the traction rod 10 and is in movable abutment with the limiting portion 17, the support spring 32 is sleeved on the cable docking port 27, one end of the support spring 32 abuts against the limiting protrusion 31, and the other end of the support spring 32 is connected to the locking collar 23.

[0039] In an embodiment of the present invention, a cylindrical protrusion 16 is arranged on one side surface of the traction plate 12, and the cylindrical protrusion 16 is slidably connected to the chute 33, and the chute 33 is opened on the side walls of both sides of the traction head housing 1.

[0040] In an embodiment of the present invention, two support members 6 are provided on each side, and the two support members 6 are distributed front and back and are at the same swing angle.

[0041] Working principle: When threading the cable to be threaded, first, the relevant personnel connect the traction head housing 1 to the threading equipment (such as an electric threading machine) through the traction cable 8. Then, the traction head housing 1 is inserted into one end opening of the pipeline. Next, the relevant personnel manually push the traction cable 8 into the traction head housing 1 to deploy the lateral support assembly 3, so that the support members 6 on both sides are deployed and abutted against the inner walls on both sides of the pipeline, pressing the line in the pipeline against the bottom of the traction head housing 1 and separating it through the support members 6 on both sides. Then, the relevant personnel use the threading equipment to push the traction cable 8, thereby pushing the traction head housing 1 to be pushed towards the end where the cable is to be threaded in the pipeline. During this process, as the threading equipment continuously pushes the traction cable 8, the traction rod 10 continuously provides a thrust to the deployment drive mechanism 4, and the traction plate 12 cooperates with the limit slide rod 14 and the limit spring 13 to provide elastic support for the traction tooth plate 15. As a result, the traction tooth plate 15 drives the first rack portion 19 to drive the deployment transmission member 5 to move towards the traction port 28 side through the rolling engagement with the transmission gear 35. Thus, the second rack portions 18 provided on both sides of the deployment transmission member 5 provide elastic support for the swing rod 21 to drive the expansion of the roller 22 through the rolling engagement with the engagement portion 20, so that the roller 22 continuously adheres to the inner wall of the pipeline, ensuring that the line in the pipeline is continuously pressed against the bottom of the traction head housing 1 until the traction head housing 1 is pushed to the other end of the pipeline. Then, the cable to be threaded can be docked with the cable docking port 27 at the other end of the traction head housing 1 for pulling back and wiring.

[0042] When docking and fixing the cable to be threaded, the relevant personnel can directly insert one end of the cable into the cable docking port 27. Under the push of the cable, the symmetrically arranged clamping blocks 29 rotate to one side and are squeezed by the cable. When the cable generates a pulling-back force, under the friction between the tooth portion 40 on the clamping block 29 and the surface of the cable, the clamping block 29 rotates in the reverse direction to reset. Thus, under the drive of the tooth portion 40 of the arc-shaped structure of the clamping block 29, the cable applying the pulling-back force is clamped and fixed. The greater the pulling-back force of the cable, the greater the opposite clamping force of the clamping block 29. During this process, the support spring 32 sleeved on the cable docking port 27 provides elastic support for the locking collar 23 to keep it clamping the cable. After the cable is installed, the traction cable 8 can be pulled back through the threading equipment to thread the cable.

[0043] At this time, as the traction cable 8 is pulled back, the traction rod 10 drives the lateral support assembly 3 to retract, causing the support members 6 on both sides to fold, reducing the friction with the pipeline, making the cable pull-back faster. At the same time, the traction rod 10 pulls the connecting collar 25 through the limiting portion 17. The continuous pulling causes the connecting collar 25 to pull the pull rod 24 through the extension portion 37, and then the pull rod 24 pulls back the locking collar 23 through the through hole 39 and keeps it tightly attached to the traction head housing 1. Thus, during the process of the traction head housing 1 driving the cable docked with it to pull back and thread, the locking collar 23 that elastically locks the cable is transformed into a continuous rigid lock on the cable under the continuous pulling force. Therefore, during the process of pulling back the thread, the friction of the internal line of the pipeline on the locking collar 23 will not cause it to move and loosen the lock on the cable, thereby ensuring the stability of the cable connection. Until the cable is threaded and comes out from one end opening of the pipeline, the threading device stops applying the pulling force, and relevant personnel can manually pull the locking collar 23 in the direction of the limiting protrusion 31. Then, after controlling the block 29 to cancel the lock on the cable, the cable can be taken out, and then the locking collar 23 can be released. It resets under the elastic support of the support spring 32, facilitating the quick docking of the next cable.

[0044] To sum up, the present invention is a cable guiding and threading equipment for electrical construction: the traction assembly controls the deployment of the lateral support assembly to separate the cables in the pipeline and press them under the traction head housing to provide an open threading space for them, effectively avoiding the criss-crossing and complex lines blocking the smooth threading. When the cables are docked and pulled, the elastic locking assembly is used to achieve rapid and stable docking of the cables, and the pulling and cooperation of the traction assembly makes the elastic locking assembly further become a rigid lock, so that the cables can be stably pulled, ensuring the smooth threading. The traction rod is connected with the traction cable through the adapter, and can be used as the driving part of the lateral support assembly and the elastic locking assembly. The traction cable pushes and pulls the traction rod to realize the expansion and contraction of the lateral support assembly, which can effectively realize that when the traction head shell is extended into the pipeline, the support member provided with rollers is kept expanded, and the line is pressed under the traction head shell to separate it, which provides convenience for the smooth threading of the traction head shell. When the traction head shell is connected to the cable to be threaded, after the cable is connected through the elastic locking assembly, the traction rod further pulls the locking ring through the pulling force of the traction cable, so that it is always tightly fitted to one end of the traction head shell during the threading process, so that the elastic locking becomes a hard locking, and the locking mechanism of the locking ring is prevented from loosening due to friction, thereby ensuring the stability of cable traction. The elastically retractable limit slide bar mechanism used between the traction plate and the traction tooth plate can make the traction tooth plate elastically contract on the traction plate through the limit slide bar when the support is unfolded and threaded and is subjected to hard collision and extrusion or pipeline corners during the unfolding process of the traction rod controlling the unfolding drive mechanism and cooperating with the lateral support assembly, so that the support can be adaptively unfolded and retracted to adapt to various situations in the pipeline. The locking meshing part on the locking collar cooperates with the card block installed on the cable docking port, so that the cable can be directly inserted to achieve locking when docking. The card block with the gear part cooperates with its structure to effectively prevent the cable from slipping off and ensure the stable connection of the cable.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0047] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention creation, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A cable guiding and threading device for electrical construction, characterized in that: The traction head housing (1) comprises a traction assembly (2), a lateral support assembly (3) and an elastic locking assembly (7). The traction head housing (1) has a traction opening (28) at one end and an elastic locking assembly (7) at the other end. Side openings (34) are provided on both sides of the traction head housing. Transmission gears (35) are symmetrically arranged on the upper and lower inner walls of the traction head housing (1) via a mounting seat (36). The traction assembly (2) comprises a traction cable (8), an adapter (9) and a traction rod (10); the traction rod (10) is located in the traction head housing (1); one end of the traction rod is connected to the traction cable (8) via the adapter (9); the other end is provided with a limiting portion (17); the traction cable (8) passes through the traction port (28) and is connected to the output end of the threading device; The lateral support assembly (3) comprises an unfolding transmission mechanism, an unfolding transmission member (5) and a support member (6); The unfolding transmission mechanism comprises a support plate (11), a traction plate (12) and a traction tooth plate (15); the support plate (11) is fixedly sleeved on one end of the traction rod (10); the traction plate (12) is fixedly connected to both ends of the support plate (11); a limiting slide bar (14) is passed through one end of the traction plate (12); the limiting slide bar (14) is fixedly connected to one end of the traction tooth plate (15); a limiting spring (13) is sleeved on the limiting slide bar (14); one end of the limiting spring (13) abuts against one end of the traction tooth plate (15); the other end of the limiting spring (13) abuts against the traction plate (12); and the traction tooth plate (15) meshes with one side of the transmission gear (35); The unfolding transmission member (5) is movably sleeved on the traction rod (10), and the upper and lower surfaces of the unfolding transmission member (5) are provided with a first rack portion (19) meshing with the other side of the transmission gear (35), and the two sides of the unfolding transmission member (5) are provided with a second rack portion (18); The support member (6) is symmetrically distributed on both sides of the traction head housing (1), and the support member (6) comprises a swing rod (21), one end of the swing rod (21) is fixedly connected to a meshing portion (20) meshing with the second rack portion (18), and the other end is rotatably provided with a roller (22), and the meshing portion (20) is rotatably provided on the side opening (34).

2. The cable guiding and threading device for electrical construction according to claim 1, characterized in that: The elastic locking assembly (7) comprises a cable docking port (27), a locking collar (23) and a support spring (32), wherein: The cable docking port (27) is fixedly connected to the other end of the traction head housing (1); a limiting protrusion (31) is provided at the end of the cable docking port (27); installation ports (30) are provided at the upper and lower sides of the cable docking port (27); a clamping block (29) is rotatably connected in the installation port (30); a driven meshing portion (38) is provided at one end of the clamping block (29); and a gear portion (40) is provided at the other end of the clamping block (29); The locking collar (23) is movably sleeved on the cable docking port (27); the locking collar (23) is provided with a connecting collar (25), a pull rod (24) and a locking meshing portion (26); wherein the locking meshing portion (26) is provided on the upper and lower inner walls of the locking collar (23); the locking meshing portion (26) is meshed with the driven meshing portion (38); the pull rod (24) is distributed on one side of the locking collar (23) from top to bottom; one end of the pull rod (24) is fixedly connected to one side of the locking collar (23); the other end of the pull rod (24) passes through the through hole (39) and is fixedly connected to the extension portion (37); the extension portion (37) is provided on the upper and lower ends of the connecting collar (25); the connecting collar (25) is movably sleeved on the other end of the traction rod (10) and movably abuts against the limiting portion (17); The support spring (32) is sleeved on the cable docking port (27), one end of the support spring (32) abuts against the limiting protrusion (31), and the other end of the support spring (32) is connected to the locking collar (23).

3. The cable guiding and threading device for electrical construction according to claim 2, characterized in that: A cylindrical protrusion (16) is provided on one side surface of the traction plate (12), and the cylindrical protrusion (16) is slidably connected to a slide groove (33), and the slide groove (33) is provided on both side walls of the traction head housing (1).

4. The cable guiding and threading device for electrical construction according to claim 3, characterized in that: A total of two support members (6) are provided on each side, and the two support members (6) are distributed front and back and are at the same swing angle.

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