Cable threading device for electrical engineering

By designing cable threaders for clamping and extension sections, the relative movement of the inner and outer cylinders and the rotation of the plastic cylinders are solved, and the threading efficiency and cable stability are improved.

CN223218737UActive Publication Date: 2025-08-12SHAANXI SCI TECH UNIV
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Patent Information

Application Number
CN202422432817.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-08-12
Estimated Expiration
2034-10-09

AI Technical Summary

Technical Problem

Existing threaders are easily blocked in long tubes and multi-bend situations, difficult to thread, and the cables are not fixed firmly, resulting in cumbersome operation, time-consuming and labor-consuming, and low threading efficiency.

Method used

A cable threader including a clamping section and an extension section is designed. The clamping section consists of an outer cylinder and an inner cylinder. The inner cylinder is equipped with a guide groove. The extension section consists of a plastic cylinder and an auxiliary spring. The stable clamping and steering of the cable is achieved through the relative movement of the inner cylinder and the outer cylinder. The rotation of the plastic cylinder drives the rotation of the inner cylinder to solve the problem of bending the threader.

Benefits of technology

It improves the threading efficiency of the threader in multiple curves, ensures the stability of the cable during the threading process, simplifies the operation process, and reduces the risk of cable falling off.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a cable threading apparatus for electrical engineering, and relates to the technical field of cable wiring, the cable threading apparatus comprises a clamping section used for clamping and fixing a cable and an extension section used for extension, splicing devices are arranged between the clamping section and the extension section and between the extension sections, the clamping section comprises an outer cylinder, and the outer cylinder is provided with an inner cylinder. The inner wall of the outer cylinder is slidably connected with an inner cylinder, and two notches are formed in the outer surface of the inner cylinder. According to the cable threading device for the electrical engineering, after the extension sections are pushed to push the clamping sections into the pipeline, movement of the clamping sections is completed step by step by increasing the number of the extension sections, when a corner is encountered, the plastic soft barrel is rotated, the rotation of the plastic soft barrel drives the inner barrel to rotate, meanwhile, the rotation of the plastic soft barrel and the inner barrel continues to be pushed to drive the guide groove to rotate, and therefore the cable threading device is convenient to use. And meanwhile, under the driving of thrust, the inner cylinder completes steering by virtue of the guide groove, so that the problem that a common threading device in the prior art is relatively poor in turning effect is solved.
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Description

Technical Field

[0001] The utility model relates to a cable threader, in particular to a cable threader for electrical engineering, belonging to the technical field of cable wiring. Background Art

[0002] A wire threader, also known as a perforator, is an auxiliary tool used to pull cables in pipes. The wire threader mainly consists of a bracket and a cleaning rod. The cleaning rod is wrapped around the bracket. During construction, the cleaning rod wrapped around the bracket is pulled out through the wire pipe, and then the cable is fixed to the end of the cleaning rod. The cleaning rod is pulled to pass the cable through the wire pipe.

[0003] However, in the common construction process, when the wire pipe is long and has many bends, ordinary wire threaders are easily blocked at the bends of the wire pipe. At the same time, the extension section of the common wire threaders is mostly braided rope. Although the braided rope can provide good pulling force, it cannot provide thrust when the wire threader enters the pipe to thread the wire, making it difficult for the wire threader to pass through the other end of the wire pipe. It is necessary to use other auxiliary tools to hook out the cleaning rod at the other end of the wire pipe. The operation steps are cumbersome, time-consuming and labor-intensive, resulting in poor threading efficiency. At the same time, the common wire threaders do not fix the cable ends firmly enough, and the cable may fall off during the cable pulling process.

[0004] Therefore, a cable threader for electrical engineering is proposed. Utility Model Content

[0005] The utility model provides a cable threader for electrical engineering, which solves the problem of poor bending effect of the common threaders in the prior art, while ensuring the stability of the cable during the threading process and improving the operating efficiency of the threader.

[0006] The utility model is realized by the following technical solutions: a cable threader for electrical engineering, comprising a clamping section for clamping and fixing the cable and an extension section for extending the cable, wherein a splicing device is provided between the clamping section and the extension section, and between the extension sections;

[0007] The clamping section includes an outer tube, the inner wall of the outer tube is slidably connected to the inner tube, the outer surface of the inner tube is provided with two notches, the outer surface of the outer tube is provided with corresponding notches, and the top of the inner tube is provided with a guide groove. The extended section includes a plastic soft tube, an auxiliary spring is provided inside the plastic soft tube, and both ends of the auxiliary spring are connected to the inner wall of the plastic soft tube.

[0008] A slide groove is provided on the outer surface of the inner cylinder, and the slide groove runs through the entire inner cylinder. A slider is fixed to the inner wall of the outer cylinder, and the slider is slidably connected to the slide groove. The sliding connection between the slider and the slide groove prevents the outer cylinder from rotating during the threading process, thereby affecting the steering of the outer cylinder.

[0009] The splicing device includes a clamping block at the bottom end of the outer tube and the bottom end of the plastic soft tube, a limiting groove is provided on the side of the clamping block, the inner wall of the limiting groove is slidably connected to the limiting block, a connecting tube is fixed to the top of the plastic soft tube, a limiting groove corresponding to the limiting block is provided on the side of the connecting tube, the limiting block is clamped with the limiting groove, and the connection between the plastic soft tube and the plastic soft tube or the plastic soft tube and the outer tube is completed by the clamping of the limiting block and the limiting groove.

[0010] A reset spring is installed on the inner side of the limit block, and the other end of the reset spring is fixed to the inner bottom wall of the limit groove. A reset telescopic rod is provided between the limit block and the limit groove, and one end of the reset telescopic rod is fixed to the limit block, and the other end of the reset telescopic rod is fixed to the limit groove.

[0011] A track groove is provided on the side of the clamping block, and a track block is slidably connected to the track groove. The other end of the track block is fixed to the limit block. The length of the track groove is smaller than the length of the limit groove. The track block slides in the track groove to limit the maximum moving distance of the limit block, thereby preventing the limit block from flying out under the elastic force of the reset spring.

[0012] When the limit block moves to the outermost side under the push of the return spring, the limit block does not exceed the side of the connecting tube, thereby preventing the limit block from protruding from the connecting tube and causing the limit block to collide with the external pipeline during the threading process.

[0013] An auxiliary groove is fixed on the inner wall of the connecting cylinder, and an auxiliary block is fixed on the outer surface of the clamping block. The auxiliary block is slidably connected to the auxiliary groove. The sliding connection between the auxiliary block and the auxiliary groove prevents relative rotation between the plastic flexible cylinder, thereby maintaining the stability of the plastic flexible cylinder.

[0014] The utility model provides a cable threader for electrical engineering, which has the following beneficial effects:

[0015] 1. This cable threader for electrical engineering pushes the clamping section into the pipe by pushing the extension section. The movement of the clamping section is gradually completed by increasing the number of extension sections. When encountering a corner, the plastic soft tube is rotated. The rotation of the plastic soft tube drives the inner tube to rotate. At the same time, the plastic soft tube is continued to be pushed. The rotation of the inner tube drives the guide groove to rotate. At the same time, driven by the thrust, the inner tube relies on the guide groove to complete the turning, which solves the problem of poor cornering effect of the common cable threader in the prior art.

[0016] 2. The cable threader for electrical engineering is provided with an inner cylinder and an outer cylinder. During the process of threading the cable through the pipe, the cable passes through the slot of the inner cylinder and then passes through the slots of the outer cylinder and the inner cylinder again from the outer side. When the outer cylinder is pulled back to move the extension section, the movement of the outer cylinder drives the movement of the inner cylinder and the cable. At the same time, the relative movement of the inner cylinder and the outer cylinder causes the cable at the slot position to be squeezed and clamped, maintaining a stable connection between the cable and the clamping section, ensuring the stability of the cable during the threading process, and improving the operating efficiency of the threader. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the clamping section of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the outer cylinder of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the extension section and the splicing device of the utility model;

[0020] Figure 4 It is a sectional view of the side view of the card block of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the splicing device of the present utility model.

[0022] Description of Reference Numerals

[0023] 1. Clamping section; 2. Extension section; 3. Splicing device;

[0024] 101, outer cylinder; 102, inner cylinder; 103, guide groove; 104, slider;

[0025] 201. Plastic cylinder; 202. Auxiliary spring;

[0026] 301. Clamping block; 302. Limiting block; 303. Connecting tube; 304. Return spring; 305. Return telescopic rod; 306. Track block; 307. Auxiliary slot; 308. Auxiliary block. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 5An embodiment of the utility model provides a cable threader for electrical engineering, including a clamping section 1 for clamping and fixing the cable and an extension section 2 for extending the cable. A splicing device 3 is provided between the clamping section 1 and the extension section 2 and between the extension sections 2.

[0029] The clamping section 1 includes an outer cylinder 101, the inner wall of the outer cylinder 101 is slidably connected to the inner cylinder 102, the outer surface of the inner cylinder 102 is provided with two notches, the outer surface of the outer cylinder 101 is provided with corresponding notches, and the top of the inner cylinder 102 is provided with a guide groove 103. The extension section 2 includes a plastic soft cylinder 201, and an auxiliary spring 202 is provided inside the plastic soft cylinder 201. The two ends of the auxiliary spring 202 are connected to the inner wall of the plastic soft cylinder 201.

[0030] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 The outer surface of the inner cylinder 102 is provided with a slide groove, which runs through the entire inner cylinder 102, and the inner wall of the outer cylinder 101 is fixed with a slider 104, which is slidably connected to the slide groove. The sliding connection between the slider 104 and the slide groove prevents the inner cylinder 102 and the outer cylinder 101 from rotating during the threading process, thereby affecting the steering of the outer cylinder 101. The splicing device 3 includes a clamping block 301 at the bottom end of the outer cylinder 101 and the bottom end of the plastic soft cylinder 201. The side of the clamping block 301 is provided with a limiting groove, and the inner wall of the limiting groove is slidably connected to the limiting block 302. The top of the plastic soft cylinder 201 is fixed with a connecting cylinder 303, and the side of the connecting cylinder 303 is provided with a limiting groove corresponding to the limiting block 302. The limiting block 302 is clamped with the limiting groove, and the connection between the plastic soft cylinder 201 and the plastic soft cylinder 201 or the plastic soft cylinder 201 and the outer cylinder 101 is completed by clamping the limiting block 302 with the limiting groove.

[0031] Please refer to Figure 3 、 Figure 4 and Figure 5 The inner side of the limit block 302 is equipped with a return spring 304, and the other end of the return spring 304 is fixed to the inner bottom wall of the limit groove. A return telescopic rod 305 is provided between the limit block 302 and the limit groove. One end of the return telescopic rod 305 is fixed to the limit block 302, and the other end of the return telescopic rod 305 is fixed to the limit groove. A track groove is provided on the side of the clamping block 301, and a track block 306 is slidably connected in the track groove. The other end of the track block 306 is fixed to the limit block 302. The length of the track groove is less than the length of the limit groove. The track block 306 slides in the track groove to limit the maximum moving distance of the limit block 302, preventing the limit block 302 from flying out under the elastic force of the return spring 304.

[0032] Please refer to Figure 3 、 Figure 4and Figure 5 When the limit block 302 moves to the outermost side under the push of the return spring 304, the limit block 302 does not exceed the side of the connecting tube 303, thereby preventing the limit block 302 from protruding from the connecting tube 303 and causing the limit block 302 to collide with the external pipe during the threading process. The inner wall of the connecting tube 303 is fixed with an auxiliary groove 307, and the outer surface of the clamping block 301 is fixed with an auxiliary block 308. The auxiliary block 308 is slidably connected to the auxiliary groove 307. The sliding connection between the auxiliary block 308 and the auxiliary groove 307 prevents relative rotation between the plastic soft tube 201, thereby maintaining the stability of the plastic soft tube 201.

[0033] When the utility model is in use: after pushing the extension section 2 to push the clamping section 1 into the pipe, the movement of the clamping section 1 is gradually completed by increasing the number of extension sections 2. When encountering a corner, the plastic soft cylinder 201 is rotated, and the rotation of the plastic soft cylinder 201 drives the inner cylinder 102 to rotate. At the same time, the plastic soft cylinder 201 is continued to be pushed, and the rotation of the inner cylinder 102 drives the guide groove 103 to rotate. At the same time, driven by the thrust, the inner cylinder 102 relies on the guide groove 103 to complete the turning, which solves the problem of poor cornering effect of the threader commonly used in the prior art.

[0034] By providing the inner cylinder 102 and the outer cylinder 101, during the process of threading the cable through the pipe, the cable passes through the slot of the inner cylinder 102 and then passes through the slots of the outer cylinder 101 and the inner cylinder 102 from the outer side. When the extension section 2 is pulled back to cause the outer cylinder 101 to move, the movement of the outer cylinder 101 drives the inner cylinder 102 to move and drives the cable to move. At the same time, the relative movement of the inner cylinder 102 and the outer cylinder 101 causes the cable at the slot position to be squeezed and clamped, maintaining a stable connection between the cable and the clamping section 1, ensuring the stability of the cable during the threading process, and improving the operating efficiency of the threader.

[0035] When the length of the extension section 2 is not enough, a new extension section 2 is taken out based on the original extension section 2, and the connecting tube 303 is engaged with the clamping block 301. The limit block 302 is engaged with the limit block 302 under the push of the return spring 304. The length of the track groove is less than the length of the limit groove. The track block 306 slides in the track groove to limit the farthest moving distance of the limit block 302, preventing the limit block 302 from flying out under the elastic force of the return spring 304. At the same time, the limit block 302 does not exceed the side of the connecting tube 303, preventing the limit block 302 from protruding from the connecting tube 303, causing the limit block 302 to collide with the external pipeline during the threading process.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A cable threader for electrical engineering, comprising a clamping section (1) for clamping and fixing a cable and an extension section (2) for extending the cable, characterized in that: A splicing device (3) is provided between the clamping section (1) and the extension section (2), and between the extension sections (2). The clamping section (1) comprises an outer cylinder (101), the inner wall of the outer cylinder (101) is slidably connected to the inner cylinder (102), the outer surface of the inner cylinder (102) is provided with two notches, the outer surface of the outer cylinder (101) is provided with corresponding notches, and the top of the inner cylinder (102) is provided with a guide groove (103), and the extension section (2) comprises a plastic soft cylinder (201), an auxiliary spring (202) is provided inside the plastic soft cylinder (201), and both ends of the auxiliary spring (202) are connected to the inner wall of the plastic soft cylinder (201).

2. The cable threader for electrical engineering according to claim 1, characterized in that: The outer surface of the inner cylinder (102) is provided with a slide groove which runs through the entire inner cylinder (102); a slider (104) is fixed to the inner wall of the outer cylinder (101); and the slider (104) is slidably connected to the slide groove.

3. The cable threader for electrical engineering according to claim 1, characterized in that: The splicing device (3) comprises a clamping block (301) at the bottom end of the outer cylinder (101) and the bottom end of the plastic soft cylinder (201); a limiting groove is provided on the side of the clamping block (301); the inner wall of the limiting groove is slidably connected to the limiting block (302); a connecting cylinder (303) is fixed to the top end of the plastic soft cylinder (201); a limiting groove corresponding to the limiting block (302) is provided on the side of the connecting cylinder (303); and the limiting block (302) is clamped with the limiting groove.

4. The cable threader for electrical engineering according to claim 3, characterized in that: A return spring (304) is installed on the inner side surface of the limit block (302), and the other end of the return spring (304) is fixed to the inner bottom wall of the limit groove. A return telescopic rod (305) is provided between the limit block (302) and the limit groove, and one end of the return telescopic rod (305) is fixed to the limit block (302), and the other end of the return telescopic rod (305) is fixed to the limit groove.

5. The cable threader for electrical engineering according to claim 3, characterized in that: A track groove is provided on the side of the clamping block (301), and a track block (306) is slidably connected in the track groove. The other end of the track block (306) is fixed to the limit block (302), and the length of the track groove is smaller than that of the limit groove.

6. The cable threader for electrical engineering according to claim 4, characterized in that: When the limiting block (302) moves to the outermost side under the push of the return spring (304), the limiting block (302) does not exceed the side surface of the connecting tube (303).

7. The cable threader for electrical engineering according to claim 6, characterized in that: An auxiliary groove (307) is fixed on the inner wall of the connecting cylinder (303), and an auxiliary block (308) is fixed on the outer surface of the clamping block (301). The auxiliary block (308) is slidably connected to the auxiliary groove (307).