Pipeline threading device for electric power construction

Abstract

The invention relates to the technical field of threading devices, and discloses a pipeline threading apparatus for power construction, which comprises two side supports arranged in front-back symmetry, the lower ends of the two side supports are jointly and rotatably connected with a wheel shaft, the front and rear ends of the wheel shaft are connected with moving wheels, and the centers of the two side supports are jointly and rotatably connected with a central shaft. The front end of the center shaft is connected with a rocking handle, the outer wall of the center shaft is connected with a wire spool, the outer wall of the wire spool is connected with a traction cable, the end of the traction cable is connected with a threading assembly, and a lead shell is connected between the upper portions of the inner walls of the two side supports. The device can solve the problem that a wire is tedious to fix in traditional equipment, automatic pushing is achieved by means of a mechanical transmission system, the overall pipeline threading efficiency is effectively improved, and the device has moving convenience, structural durability and operation flexibility and can effectively meet the pipeline threading requirement of power construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of threading devices, in particular to a pipe threading device for power construction. BACKGROUND

[0002] In power engineering construction, pipe threading is a key link for laying cable, wire and other lines, and its efficiency and quality directly affect the overall construction progress. The cable is composed of several or several groups of wires, and is used for power or signal transmission. When threading the pipe, the cable end is fixed by using a traction head and then threaded through the cable pipe. At present, the traditional pipe threading operation relies on simple threading devices or manual traction methods, which has the following technical problems:

[0003] 1. Complicated cable fixing method: the connection between the traction end of the existing threading device and the cable is mostly fixed by wrapping with adhesive tape, binding with steel wire or knotting, which not only consumes time in operation, but also easily damages the cable insulation layer, and is very inconvenient to disassemble subsequently;

[0004] 2. High labor intensity of manual traction: the traditional device needs to be manually rotated to release or recover the traction cable, and for long-distance or multi-bend pipes, the traction resistance increases significantly, making single-person operation difficult, and the cable is prone to deviation and wear due to uneven force.

[0005] 3. Poor threading adaptability: the traction head of the ordinary threading device is of rigid structure, which is prone to jamming at pipe bends and is difficult to adapt to pipes of different diameters; at the same time, the traction cable is prone to breakage due to material problems when repeatedly bending or bearing weight, affecting the service life.

[0006] Therefore, it is urgent to develop a power construction pipe threading device that is convenient to operate, reliable in fixing and has strong adaptability to meet the threading needs in complex power construction environment. Therefore, we propose a pipe threading device for power construction. SUMMARY

[0007] The purpose of the present application is to provide a pipe threading device for power construction to overcome the technical problems existing in the prior art.

[0008] In order to achieve the above technical purpose and achieve the above technical effect, the present application provides the following technical scheme:

[0009] A pipe threading device for power construction, comprising two front and rear symmetrical side supports, the lower ends of the two side supports are rotatably connected with an axle, the front and rear ends of the axle are connected with moving wheels, the centers of the two side supports are rotatably connected with a center shaft, the front end of the center shaft is connected with a crank handle, the outer wall of the center shaft is connected with a winding reel, the outer wall of the winding reel is connected with a traction cable, the end of the traction cable is connected with a threading assembly, and the inner walls of the two side supports are connected with a lead shell.

[0010] Preferably, a pipe threading device for electric power construction, the threading assembly comprises a threading shell and a conical screw cap, the tip of the conical screw cap is connected with a fixing ring, the fixing ring is connected with the free end of a traction cable, the inner wall top of the conical screw cap is provided with internal threads, the top of the threading shell is provided with four wire inlet holes, the lower part of the outer wall of the threading shell is provided with assembly threads, the upper part of the side wall of the threading shell is circumferentially provided with four rectangular openings, and the rectangular openings are provided with guide wheels.

[0011] Preferably, a pipe threading device for electric power construction, the lower end of the threading shell is circumferentially connected with a plurality of flexible springs, the middle of the inner cavity of the threading shell is connected with a fixed partition, the outer side of the fixed partition is circumferentially provided with four arc openings, the bottom center of the fixed partition is connected with a rubber column, the outer wall of the rubber column is uniformly provided with wear-resistant convex points, the bottom of the rubber column is provided with a butt joint opening, the four sides of the butt joint opening are connected with separation grooves, the inner wall center of the conical screw cap is connected with a butt joint column, and the upper end of the butt joint column is connected with an extrusion block.

[0012] Preferably, a pipe threading device for electric power construction, the extrusion block is provided in a cylindrical structure at the lower part and a conical structure at the upper part, the diameter of the lower part of the extrusion block is greater than the aperture diameter of the butt joint opening, and the arc opening is located directly below the wire inlet hole.

[0013] Preferably, a pipe threading device for electric power construction, the outer side wall of the lead shell is provided with a slide way at the front and rear parts, the slide way is slidably connected with a sliding block, and the left and right groups of sliding blocks are connected with a transmission shell, the center of the left side wall of the lead shell is rotationally connected with a horizontal screw rod, the outer wall of the horizontal screw rod is screw-connected with a nut seat, a traction rod is hingedly connected between the outer wall of the nut seat and the left sliding block, and the top of the lead shell is connected with a pull handle.

[0014] Preferably, a pipe threading device for electric power construction, a round through hole is formed in the right sliding block, the right part of the transmission shell is rotationally connected with a horizontal shaft, the right end of the horizontal shaft that protrudes out of the round through hole is connected with a push wheel, the left end of the horizontal shaft that protrudes into the transmission shell is connected with a bevel gear, the transmission shell is rotationally connected with a hollow tube, the outer wall of the hollow tube is connected with a bevel gear ring, the bevel gear ring is meshingly connected with the bevel gear, and the inner wall of the hollow tube is connected with a limiting strip.

[0015] Preferably, a pipe threading device for electric power construction, two bevel gear rings are symmetrically arranged front and back.

[0016] Preferably, a pipe threading device for electric power construction, the outer wall of the rear side support is connected with a storage battery, a driving motor and a control switch, the control switch is electrically connected with the driving motor and the storage battery, the output end of the driving motor is connected with a longitudinal shaft, the outer wall of the longitudinal shaft is provided with a guide groove, the longitudinal shaft penetrates through the hollow pipe and is coaxially arranged, and the limiting strip is slidingly connected with the guide groove.

[0017] Preferably, a pipe threading device for electric power construction, the outer circumferential wall of the two push wheels is uniformly provided with friction protrusions, the left end of the front push wheel and the right end of the rear push wheel are both connected with a check ring, the bottom wall of the lead shell is connected with an L-shaped seat, the transverse part of the L-shaped seat is provided with a rope passing hole, and the traction cable penetrates through the rope passing hole.

[0018] Preferably, a pipe threading device for electric power construction, the traction cable comprises a plastic cable core, a winding rope and a wrapping layer arranged in sequence from inside to outside, the plastic cable core is made of modified high-density polyethylene material as a base material, the cross section of the plastic cable core is provided in a star-shaped structure, the winding rope is a composite bundle of para-aramid fiber and galvanized steel wire and is wound on the surface of the plastic cable core at a spiral angle of 60 degrees, and the wrapping layer is made of polyurethane elastomer by injection molding.

[0019] Compared with the prior art, the pipe threading device has the following beneficial effects:

[0020] 1. The structure design of the pipe threading device is reasonable, the threading operation is convenient and fast, and the adaptability is strong. Through the combination of the side support, the moving wheel and the winding disc, the flexible movement of the whole device and the convenient winding and unwinding of the traction cable are realized. The conical structure of the threading assembly and the design of the guide wheel can smoothly pass through the pipeline, and are suitable for different diameters of the construction pipeline. The three-layer composite structure of the traction cable has high flexibility and strong tensile resistance, can adapt to repeated bending and long-term bearing, and meets the basic traction demand of pipeline threading.

[0021] 2. The pipe threading device can optimize the wire fixing mode and effectively improve the operation efficiency. The flexible spring piece, the rubber column and the extrusion block structure are added in the threading assembly. Through the thread cooperation of the conical screw cap and the threading shell, the quick clamping and fixing of the wire are realized by the deformation of the rubber column and the extrusion of the flexible spring piece. The pipe threading device can replace the traditional fixing mode of adhesive tape winding or wire knotting, not only reduces the damage of the wire, but also shortens the loading and unloading time, especially suitable for the synchronous threading of multiple wires, and significantly improves the construction convenience.

[0022] 3. The pipe threading device can realize the automatic pushing of the traction cable, and the adaptability and labor-saving property are enhanced. The friction force can be adjusted by adjusting the distance between the push wheels, the traction cable can be conveniently clamped and pushed, the hollow pipe rotates synchronously with the longitudinal shaft, the traction cable is automatically pushed in the pipeline after the push wheel rotates through the meshing transmission of the bevel gear and the bevel gear ring, and the labor intensity is reduced.

[0023] In summary, the device can solve the pain point of complicated wire fixing in traditional equipment, realize automatic pushing with the help of mechanical transmission system, effectively improve the overall pipeline threading efficiency, and the device has the advantages of convenient mobility, durable structure and flexible operation, which can effectively meet the pipeline threading demand of power construction. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the following specific embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The overall structure of the present application Figure 1 ;

[0026] Figure 2 The overall structure of the present application Figure 2 ;

[0027] Figure 3 The external structure of the threading assembly in the present application

[0028] Figure 4 The fixing mode of the cable threading in the present application Figure 1 ;

[0029] Figure 5 The fixing mode of the cable threading in the present application Figure 2 ;

[0030] Figure 6 The cross-sectional structure of the threading shell in the present application

[0031] Figure 7 The structure of the fixed spacer in the present application

[0032] Figure 8 The structure of the rubber column in the present application

[0033] Figure 9 The structure of the tapered screw cap in the present application

[0034] Figure 10 The external structure of the lead shell in the present application

[0035] Figure 11 The top view structure of the longitudinal shaft in the present application

[0036] Figure 12 The internal structure of the transmission shell in the present application

[0037] Figure 13 Structure diagram of the pushing wheel in the application;

[0038] Figure 14 Structure diagram of the traction cable in the application.

[0039] In the figure: 1, side support; 2, wheel shaft; 3, moving wheel; 4, central shaft; 5, crank; 6, winding reel; 7, traction cable; 8, threading assembly; 9, lead shell;

[0040] 101, battery; 102, driving motor; 103, control switch; 104, longitudinal shaft; 105, guide groove;

[0041] 701, plastic cable core; 702, winding rope; 703, wrapping layer;

[0042] 801, threading shell; 802, conical screw cap; 803, fixing ring; 804, threading hole; 805, rectangular port; 806, guide wheel;

[0043] 811, flexible spring piece; 812, fixed spacer; 813, arc port; 814, rubber column; 815, wear-resistant convex point; 816, butt joint port; 817, separation groove; 821, butt joint column; 822, extrusion block;

[0044] 901, slide; 902, sliding block; 903, transmission shell; 904, horizontal screw; 905, nut seat; 906, traction rod; 907, L-shaped seat;

[0045] 921, round through hole; 922, horizontal shaft; 923, pushing wheel; 924, bevel gear; 925, friction convex point; 926, check ring;

[0046] 931, hollow pipe; 932, bevel gear ring; 933, limiting strip; 971, rope passing hole. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0048] Embodiment one

[0049] Please refer to Figures 1-14As shown, the embodiment is a pipe threading device for power construction, comprising two front and rear symmetrical side supports 1, the lower ends of the two side supports 1 are rotatably connected with an axle 2, the front and rear ends of the axle 2 are connected with moving wheels 3, the centers of the two side supports 1 are rotatably connected with a central shaft 4, the front end of the central shaft 4 is connected with a crank 5, the outer wall of the central shaft 4 is connected with a winding reel 6, the outer wall of the winding reel 6 is connected with a traction cable 7, the end of the traction cable 7 is connected with a threading assembly 8, and the upper parts of the inner walls of the two side supports 1 are connected with a lead shell 9.

[0050] The threading assembly 8 comprises a threading shell 801 and a conical screw cap 802, the tip of the conical screw cap 802 is connected with a fixing ring 803, the fixing ring 803 is connected with the free end of the traction cable 7, the inner wall of the conical screw cap 802 is provided with internal threads at the top, the top of the threading shell 801 is provided with four wire inlet holes 804, the outer wall of the threading shell 801 is provided with assembly threads at the lower part, the side wall of the threading shell 801 is circumferentially provided with four rectangular openings 805 at the upper part, and the rectangular openings 805 are installed with guide wheels 806.

[0051] The traction cable 7 comprises a plastic cable core 701, a winding rope 702 and a wrapping layer 703 arranged from inside to outside in sequence, the plastic cable core 701 is made of modified high-density polyethylene material as a base material, the cross section of the plastic cable core 701 is arranged in a star-shaped structure, the winding rope 702 is a composite bundle of para-aramid fiber and galvanized steel wire and is wound on the surface of the plastic cable core 701 at a 60-degree spiral angle, and the wrapping layer 703 is injection molded by polyurethane elastomer.

[0052] The specific implementation of the embodiment is as follows:

[0053] In use, the device is moved to the working area as a whole through the moving wheels 3, the threading assembly 8 is inserted into the threading pipe to be constructed, the winding reel 6 can rotate with the central shaft 4 to wind and unwind the traction cable 7, the side wall of the threading shell 801 is circumferentially provided with four rectangular openings 805 at the upper part, the rectangular openings 805 are installed with guide wheels 806, which facilitates the movement of the threading assembly 8 in the pipe, when the threading assembly 8 is extended out of the pipe, the threading shell 801 is rotated to be separated from the conical screw cap 802, the lead wire at the end of the threading cable is pushed out of the insulation layer, the lead wire end is inserted into the threading shell 801 through the wire inlet hole 804 and is wound (as shown in the figure), the threading shell 801 is reinstalled in the opening of the conical screw cap 802 by matching the assembly threads with the internal threads, the central shaft 4 is rotated through the crank 5, the traction cable 7 is wound, and the cable is threaded through the pipe with the threading assembly 8, thereby realizing the pipe threading operation. Figure 4

[0054] ​The traction cable 7 comprises, from inside to outside, a plastic cable core 701, a winding rope 702 and a wrapping layer 703. The plastic cable core 701 is made of a modified high-density polyethylene base material and designed as a star-shaped cross-section, which gives the cable core excellent flexibility and creep resistance, can adapt to repeated bending and long-term load scenarios, avoids structural failure caused by plastic deformation, and the protruding edges of the star-shaped cross-section can form mechanical engagement with the winding rope 702, greatly enhancing the friction between the two, effectively preventing relative sliding and improving the overall structural load sharing capacity. The winding rope 702 is made of a composite bundle material of para-aramid fiber and galvanized steel wire, which ensures the core load-bearing capacity of the cable, enhances the shear and wear resistance of the cable by galvanized steel wire, and prolongs the service life. The design of a 60-degree spiral angle makes the winding layer evenly share the load and avoid local stress concentration. The wrapping layer 702 made of polyurethane elastomer injection molding can tightly wrap the internal structure and form a physical protective barrier, so that the traction cable 7 as a whole has high tensile strength, good flexibility, excellent weather resistance and structural stability, and can adapt to the traction requirements of pipeline threading.

[0055] Embodiment two

[0056] On the basis of embodiment one, the lower end of the threading shell 801 is circumferentially connected with a plurality of flexible springs 811, and the inner cavity of the threading shell 801 is connected with a fixed spacer 812 in the middle. Four arc openings 813 are circumferentially arranged on the outer side of the fixed spacer 812, a rubber column 814 is connected to the bottom center of the fixed spacer 812, wear-resistant convex points 815 are uniformly distributed on the outer wall of the rubber column 814, and a butt joint 816 is arranged at the bottom of the rubber column 814. The four surrounding parts of the butt joint 816 are connected with a partition groove 817, the inner wall center of the conical screw cap 802 is connected with a butt joint column 821, and the upper end of the butt joint column 821 is connected with an extrusion block 822.

[0057] The extrusion block 822 is arranged in a cylindrical structure at the lower part and a conical structure at the upper part, the diameter of the lower part of the extrusion block 822 is larger than the hole diameter of the butt joint 816, and the arc opening 813 is located directly below the wire inlet hole 804.

[0058] The specific implementation of the embodiment is:

[0059] In this embodiment, the inside of the threading shell 801 is provided with a fixed spacer 812 and a rubber column 814. After the wire end is threaded through the wire hole 804 and the arc opening 813, it is close to the rubber column 814. The conical screw cap 802 is rotatably installed outside the threading shell 801. As the distance between the threading shell 801 and the conical screw cap 802 shortens, the pressing block 822 at the upper end of the docking column 821 is inserted into the docking hole 816. The lower part of the pressing block 822 has a diameter larger than the hole diameter of the docking hole 816. The periphery of the docking hole 816 is connected with a separation groove 817, so that the lower end of the rubber column 814 is deformed outward and supported out. The lower end of the threading shell 801 is circumferentially connected with a plurality of flexible springs 811. The flexible springs 811 are deformed by being pressed by the inner wall of the conical screw cap 802. The flexible springs 811 and the rubber column 814 fix and clamp the wire (as shown in Figure 5 Without winding and knotting the wire, it is more convenient to install and remove.

[0060] Embodiment Three

[0061] On the basis of Embodiment Two, the front and rear parts of the outer side wall of the lead shell 9 are provided with sliding channels 901. Sliding blocks 902 are slidingly connected in the sliding channels 901. A transmission shell 903 is connected between the left and right groups of sliding blocks 902. A horizontal screw rod 904 is rotatably connected at the center of the left side wall of the lead shell 9. A nut seat 905 is screwed on the outer wall of the horizontal screw rod 904. A traction rod 906 is hingedly connected between the outer wall of the nut seat 905 and the left sliding block 902. A pull handle is connected to the top of the lead shell 9.

[0062] A round through hole 921 is formed in the right sliding block 902. A horizontal shaft 922 is rotatably connected to the right part of the transmission shell 903. A push wheel 923 is connected to the right end of the horizontal shaft 922 that extends out of the round through hole 921. A bevel gear 924 is connected to the left end of the horizontal shaft 922 that extends into the transmission shell 903. A hollow tube 931 is rotatably connected in the transmission shell 903. A bevel gear ring 932 is connected to the outer wall of the hollow tube 931. The bevel gear ring 932 is meshingly connected with the bevel gear 924. A limiting strip 933 is connected to the inner wall of the hollow tube 931. The two bevel gear rings 932 are symmetrically arranged front and back, so that the rotating directions of the two push wheels 923 are opposite.

[0063] The outer wall of the rear side support 1 is connected with a storage battery 101, a drive motor 102 and a control switch 103. The control switch 103 is electrically connected with the drive motor 102 and the storage battery 101. The output end of the drive motor 102 is connected with a longitudinal shaft 104. A guide groove 105 is formed in the outer wall of the longitudinal shaft 104. The longitudinal shaft 104 penetrates the hollow tube 931 and is coaxially arranged. The limiting strip 933 is slidingly connected with the guide groove 105.

[0064] The circumferential outer wall of the two push wheels 923 is uniformly provided with friction protrusions 925, the left end of the front push wheel 923 and the right end of the rear push wheel 923 are both connected with a check ring 926, the bottom wall of the lead line shell 9 is connected with an L-shaped seat 907, the transverse part of the L-shaped seat 907 is provided with a rope passing hole 971, and the traction cable 7 penetrates through the rope passing hole 971.

[0065] The specific implementation of the embodiment is:

[0066] In the embodiment, the traction cable 7 penetrates through the rope passing hole 971 and passes between the two push wheels 923, the horizontal screw rod 904 is rotated to make the nut seat 905 drive the traction rod 906 to deflect, the front and rear groups of sliding blocks 902 can relatively move along the slide 901, thereby adjusting the distance between the two push wheels 923, so that the friction protrusions 925 are attached to the outer wall of the traction cable 7, and the subsequent pushing effect is guaranteed, and the check ring 926 is used to prevent the traction cable 7 from being separated;

[0067] By starting the driving motor 102 through the control switch 103, the hollow pipe 931 is synchronously rotated with the longitudinal shaft 104 through the cooperation of the guide groove 105 and the limiting strip 923, thereby making the bevel gear ring 932 mesh with the bevel gear 924, and the horizontal shaft 922 drives the push wheel 923 to rotate, the two bevel gear rings 932 are symmetrically arranged in front and back, so that the rotating directions of the two push wheels 923 are opposite, the automatic pushing of the traction cable 7 can be realized, and the working efficiency of pipeline threading is improved.

[0068] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A pipe threading device for electric power construction, comprising two side supports (1) arranged symmetrically front and back, characterized in that: The lower ends of the two side supports (1) are rotatably connected with an axle (2), the front and rear ends of the axle (2) are connected with moving wheels (3), the center of the two side supports (1) is rotatably connected with a center shaft (4), the front end of the center shaft (4) is connected with a rocking handle (5), the outer wall of the center shaft (4) is connected with a winding reel (6), the outer wall of the winding reel (6) is connected with a traction cable (7), the end of the traction cable (7) is connected with a threading assembly (8), and the inner walls of the upper parts of the two side supports (1) are connected with a lead shell (9).

2. A pipe threading device for electrical construction as defined in claim 1, wherein: The threading assembly (8) comprises a threading shell (801) and a conical screw cap (802), the tip of the conical screw cap (802) is connected with a fixing ring (803), the fixing ring (803) is connected with the free end of the traction cable (7), the inner wall top of the conical screw cap (802) is provided with internal threads, the top of the threading shell (801) is provided with four wire inlet holes (804), the outer wall lower part of the threading shell (801) is provided with assembly threads, and the side wall upper part of the threading shell (801) is circumferentially provided with four rectangular openings (805), and the rectangular openings (805) are provided with guide wheels (806).

3. A pipe threading device for electrical construction as defined in claim 2, wherein: The lower end of the threading shell (801) is circumferentially connected with a plurality of flexible springs (811), the middle part of the inner cavity of the threading shell (801) is connected with a fixed partition plate (812), the outer side of the fixed partition plate (812) is circumferentially provided with four arc openings (813), the bottom center of the fixed partition plate (812) is connected with a rubber column (814), the outer wall of the rubber column (814) is uniformly provided with wear-resistant convex points (815), the bottom of the rubber column (814) is provided with a butt joint opening (816), the four around of the butt joint opening (816) are communicated with separation grooves (817), the inner wall center of the conical screw cap (802) is connected with a butt joint column (821), and the upper end of the butt joint column (821) is connected with an extrusion block (822).

4. A pipe threading device for electrical construction as defined in claim 3, wherein: The extrusion block (822) is provided in a cylindrical structure at the lower part and a conical structure at the upper part, the diameter of the lower part of the extrusion block (822) is larger than the hole diameter of the butt joint opening (816), and the arc opening (813) is located directly below the wire inlet hole (804).

5. A pipe threading device for electrical construction as defined in claim 1, wherein: The outer side walls of the lead shell (9) are provided with sliding grooves (901) at the front and rear parts, the sliding grooves (901) are slidably connected with sliding blocks (902), the left and right groups of sliding blocks (902) are connected with a transmission shell (903), the left side wall center of the lead shell (9) is rotatably connected with a horizontal screw rod (904), the outer wall of the horizontal screw rod (904) is screwed with a nut seat (905), the outer wall of the nut seat (905) and the left sliding block (902) are hingedly connected with a traction rod (906), and the top of the lead shell (9) is connected with a lifting handle.

6. A pipe threading device for electrical construction as defined in claim 5, wherein: The right slider (902) is provided with a round through hole (921), the right part of the transmission shell (903) is rotationally connected with a horizontal shaft (922), the right end of the horizontal shaft (922) extending out of the round through hole (921) is connected with a pushing wheel (923), the left end of the horizontal shaft (922) extending into the transmission shell (903) is connected with a bevel gear (924), the transmission shell (903) is rotationally connected with a hollow tube (931), the outer wall of the hollow tube (931) is connected with a bevel gear ring (932), the bevel gear ring (932) is meshingly connected with the bevel gear (924), and the inner wall of the hollow tube (931) is connected with a limiting strip (933).

7. A pipe threading device for electrical construction as defined in claim 6, wherein: The two bevel gear rings (932) are symmetrically arranged front and back.

8. A pipe threading device for electrical construction as defined in claim 6, wherein: The outer wall of the rear side support (1) is connected with a storage battery (101), a driving motor (102) and a control switch (103), the control switch (103) is electrically connected with the driving motor (102) and the storage battery (101), the output end of the driving motor (102) is connected with a longitudinal shaft (104), the outer wall of the longitudinal shaft (104) is provided with a guide groove (105), the longitudinal shaft (104) penetrates through the hollow tube (931) and is coaxially arranged, and the limiting strip (933) is slidingly connected with the guide groove (105).

9. A pipe threading device for electrical construction as defined in claim 6, wherein: The circumferential outer wall of the two pushing wheels (923) is uniformly provided with friction convex points (925), the left end of the front pushing wheel (923) and the right end of the rear pushing wheel (923) are connected with a check ring (926), the bottom wall of the lead shell (9) is connected with an L-shaped seat (907), the horizontal part of the L-shaped seat (907) is provided with a rope passing hole (971), and the traction cable (7) penetrates through the rope passing hole (971).

10. A pipe threading device for electrical construction as defined in claim 1, wherein: The traction cable (7) comprises a plastic cable core (701), a winding rope (702) and a wrapping layer (703) arranged in sequence from inside to outside, the plastic cable core (701) is made of modified high-density polyethylene material as a base material, the cross section of the plastic cable core (701) is provided in a star-shaped structure, the winding rope (702) is a composite bundle of para-aramid fiber and galvanized steel wire and is wound on the surface of the plastic cable core (701) at a spiral angle of 60 degrees, and the wrapping layer (703) is injection molded by polyurethane elastomer.

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