Auxiliary tool for threading lead wire through secondary cable

Abstract

The utility model relates to the field of power construction, and particularly discloses an auxiliary tool for threading a lead wire through a secondary cable, which comprises a threading end assembly and a lead wire end assembly, the threading end assembly comprises a threading connector, and the lead end assembly comprises a lead connector in magnetic attraction fit with the threading connector. The threading connector or the lead connector is provided with a locking mechanism, and when the threading connector and the lead connector are in magnetic attraction contact, separation of the threading connector and the lead connector is limited by the locking mechanism. According to the utility model, the connection stability of the threading end and the traction end can be improved, the disconnection during traction can be prevented, and the smooth threading of the lead can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of electric power construction, in particular to an auxiliary tool for threading secondary cables. Background Art

[0002] Currently, in overhaul and technical renovation projects involving secondary specialties, the implementation of overhaul and technical renovation projects is usually tight and the tasks are heavy, and the efficiency of laying new cables is often an important factor affecting the progress of the project. Cables are laid underground and are not easily affected by the external environment, but this increases the difficulty of fault repair. Therefore, the quick and accurate placement of cables is conducive to the safe and stable operation of the power system. According to regulations, relay protection devices play an important role in protecting the power system, but they also have a certain service life and need to be replaced after the service life expires. Under normal circumstances, the service life of relay protection devices is about 10-15 years. Exceeding the service life will weaken their control and protection functions. Relay protection and automation devices that have met their service life need to be modified and replaced, and the process involves laying a large number of new secondary cables.

[0003] The current method of threading the secondary cables is manual threading, that is, the threading of the secondary cables requires the removal of the mud blocking at the bottom of the switch cabinet, protection screen, terminal box and other mechanisms first, and then the construction workers thread the cables into the relevant mechanisms from the cable trench; the existing method of threading the secondary cables has the problems of great difficulty in threading the secondary cables, low efficiency, easy fatigue and injury to the workers, and easy damage to the running cables during the threading process.

[0004] To address the above-mentioned issues, various threading auxiliary tools with different structures are available in the prior art. For example, the applicant / utility model creator of the present invention disclosed a secondary cable threading auxiliary device in patent publication number CN117712926A. The device comprises a threader and a tractor. The threader comprises a threading rod for connecting to a target cable and a first suction head disposed at the end of the threading rod. The tractor comprises a handle 600 for handheld operation and a second suction head disposed at the end of the handle 600. The second suction head is magnetically attracted to the first suction head, i.e., the threading end and the traction end are connected by magnetic adsorption.

[0005] However, the applicant / utility model creator of the present utility model discovered during the actual construction process that the threading end and the traction end were connected only by magnetic adsorption, and the connection stability often could not meet the traction requirements. The connection was easily disconnected during traction, which was not conducive to the smooth threading of the wire.

[0006] Therefore, in order to solve the above problems, it is necessary to improve the existing secondary cable auxiliary wire threading device. Utility Model Content

[0007] In view of this, the purpose of the present invention is to provide an auxiliary tool for secondary cable threading, which is conducive to improving the connection stability between the threading end and the traction end, preventing the connection from being disconnected during traction, and ensuring smooth threading.

[0008] To achieve the above-mentioned object, the present invention provides an auxiliary tool for secondary cable threading, comprising a threading end assembly and a lead end assembly; the threading end assembly comprises a threading connector, and the lead end assembly comprises a lead connector that is magnetically coupled to the threading connector;

[0009] The threading connector or the lead connector is provided with a locking mechanism, and when the threading connector and the lead connector are in magnetic attraction contact, the locking mechanism restricts the two from separating.

[0010] As a further improvement to the above technical solution, the threading connector includes two parallel first mounting plates, a first magnetic member is vertically provided between the two first mounting plates, and two oppositely arranged second mounting plates are vertically provided on the bottom surface of one of the first mounting plates in a direction away from the first magnetic member; a second magnetic member is provided between the bottoms of the two second mounting plates, and the axis of the first magnetic member is perpendicular to the axis of the second magnetic member;

[0011] The lead connector includes a mounting box, and a third magnetic member for cooperating with the first magnetic member and the second magnetic member is installed at the bottom of the mounting box;

[0012] The locking mechanism includes two parallel limit plates and a push claw; the two limit plates are arranged on the bottom surface of the installation box and are perpendicular to each other in the direction away from the third magnetic attraction member, and the gap between the two limit plates forms a limit groove; the push claw is rotatably connected to the bottom of one of the limit plates, and the push claw can rotate unidirectionally in the direction close to the third magnetic attraction member when subjected to force and return to its original position under the action of the reset member.

[0013] As a further improvement to the above technical solution, the first magnetic member, the second magnetic member and / or the third magnetic member are permanent magnet structures or electromagnet structures.

[0014] As a further improvement of the above technical solution, the threading end assembly also includes a light strip for emitting light, a lamp holder for installing the light strip, and a threader for controlling the movement of the threading connector. One end of the lamp holder is connected to the threader and the other end is connected to the threading connector.

[0015] As a further improvement to the above technical solution, a spiral mounting groove is provided on the outer wall of the lamp holder, and the light strip is positioned along the spiral arrangement of the mounting groove.

[0016] As a further improvement to the above technical solution, the lamp holder is connected to the threading connector via a universal joint.

[0017] As a further improvement to the above technical solution, the first mounting plate and the second mounting plate are integrally formed, and the mounting box and the limiting plate are integrally formed.

[0018] As a further improvement to the above technical solution, the reset member is a spring structure or a magnet structure.

[0019] As a further improvement to the above technical solution, the lead end assembly further includes a photographing device, and the mounting box is provided with a storage slot and a cover plate for closing the storage slot;

[0020] The shooting device includes a camera for acquiring image information, a control board electrically connected to the camera, and a battery for powering the battery; a through hole facing the limit plate is provided on the cover plate, the camera is arranged on the cover plate and its camera end is inserted into the through hole; the control board and the battery are both installed in the storage slot.

[0021] As a further improvement to the above technical solution, the lead end assembly also includes a handle 600 for handheld operation, and the handle 600 is connected to the end of the installation box away from the limiting plate; the handle 600 is a multi-layer nested long tube structure and can be retracted.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The utility model provides an auxiliary tool for threading secondary cables. When in use, an external worker extends the threading end assembly into the cable trench through the internal pipe of the cable box. The person inside the cable trench looks for the threading joint and attracts it through the lead joint. Due to the addition of a locking mechanism, the threading joint and the lead joint are magnetically attracted and contacted, and then the locking mechanism restricts the separation of the two, thereby improving the connection stability between the threading end and the traction end, and preventing the connection from being disconnected during traction. At this time, the internal worker pulls the threading end assembly to his side through the lead end assembly and then bundles the target secondary cable on the threading end assembly. The external worker pulls out the threading end assembly, and the threading end assembly is pulled out together with the bundled target secondary cable, thereby finally achieving the fixation of the secondary cable.

[0024] The utility model reduces the power outage operation time and provides a guarantee for ensuring normal power supply restoration; improves operation efficiency and safety, and through the use of secondary cable threading tools, significantly reduces the cable threading time, reduces the working time of operators in narrow and poor visibility environments, reduces work risks, and improves operation safety; reduces the workload of operators, makes the cable threading process simpler and faster, reduces the physical labor intensity of operators, and can meet the needs of quickly arranging secondary cables in different environments.

[0025] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 This is the first stereogram of the present utility model;

[0028] Figure 2 for Figure 1 A magnified view of position A in the middle;

[0029] Figure 3 This is the second stereogram of the present invention;

[0030] Figure 4 for Figure 2 Enlarged view of position B in the middle;

[0031] Figure 5 This is an exploded view of the threading end assembly of the present invention;

[0032] Figure 6 It is a three-dimensional diagram of the threading end assembly of the present utility model;

[0033] Figure 7 This is an exploded view of the lead terminal assembly of the present invention;

[0034] Figure 8 It is a three-dimensional diagram of the lead terminal assembly of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figures 1 to 8 As shown: This embodiment provides an auxiliary tool for secondary cable threading, including a threading end assembly and a lead end assembly; the threading end assembly includes a threading connector 100, and the lead end assembly includes a lead connector 200 that is magnetically coupled with the threading connector 100.

[0038] The threading end assembly is primarily used for threading, while the lead end assembly is primarily used for lead removal. Their component composition and functions are the same as those of the prior art, such as those described in CN117712926A. The threading connector 100 is the tip of the threading end assembly, while the lead end connector 200 is the tip of the lead end assembly. The two components are held in contact by magnetic attraction.

[0039] However, the magnetic attraction effect is insufficient in terms of connection strength. Therefore, in order to prevent the threading connector 100 and the lead connector 200 from being separated due to a large external force after magnetic attraction contact, in this embodiment, the threading connector 100 or the lead connector 200 is specially provided with a locking mechanism. When the threading connector 100 and the lead connector 200 are magnetically attracted to each other, the locking mechanism restricts the separation of the two.

[0040] The locking mechanism is a key safety feature that ensures that two connectors do not accidentally disengage after magnetic attraction. Generally speaking, the locking mechanism can take a variety of structural forms, such as a lock, a sliding switch, a rotary lock, etc., as long as it can achieve its function.

[0041] Through the above improvements, when in use, the external staff extends the threading end assembly into the cable trench through the internal pipe of the cable box, and the staff inside the cable trench looks for the threading connector 100 and attracts it through the lead connector 200. Due to the addition of a locking mechanism, the threading connector 100 and the lead connector 200 are magnetically attracted and contacted, and the locking mechanism restricts the separation of the two, thereby improving the connection stability between the threading end and the traction end, and preventing the connection from being disconnected during traction. At this time, the internal staff pulls the threading end assembly to their side through the lead end assembly and then ties the target secondary cable to the threading end assembly. The external staff pulls out the threading end assembly, and the threading end assembly is pulled out together with the binding belt and the target secondary cable, and finally the secondary cable is fixed.

[0042] Example 2

[0043] The auxiliary tool for secondary cable threading provided in this embodiment is a further improvement on the structure and principle shown in Example 1.

[0044] This embodiment mainly provides a feasible structure of the threading connector 100, the lead connector 200 and the locking mechanism.

[0045] In this embodiment, the threading connector 100 includes two parallel first mounting plates 101, a first magnetic component 102 is vertically provided between the two first mounting plates 101, and two oppositely arranged second mounting plates 103 are vertically provided on the bottom surface of one of the first mounting plates 101 in a direction away from the first magnetic component 102; a second magnetic component 104 is provided between the bottoms of the two second mounting plates 103, and the axis of the first magnetic component 102 is perpendicular to the axis of the second magnetic component 104.

[0046] The first mounting plate 101 can be a circular plate structure, and the two first mounting plates 101 can be connected by a vertical connecting column. The first magnetic component 102 can be cylindrical and coaxially sleeved on the connecting column; the first mounting plate 101 and the second mounting plate 103 can be integrally formed, for example, processed and manufactured by 3D printing; the second mounting plate 103 can be a straight plate structure, and a rotating shaft can be set at the bottom of the two second mounting plates 103, and the second magnetic component 104 can be cylindrical and coaxially arranged on the rotating shaft.

[0047] The lead connector 200 includes a mounting box 201, and a third magnetic member 202 for cooperating with the first magnetic member 102 and the second magnetic member 104 is mounted at the bottom of the mounting box 201; the first magnetic member 102 and the second magnetic member 104 are perpendicular in space, so that they can cooperate with the third magnetic member 202 in different directions (such as Figure 1 and Figure 3 As shown), the magnetic attraction efficiency is improved. According to the use requirements, the first magnetic member 102, the second magnetic member 104 and / or the third magnetic member 202 are permanent magnet structures or electromagnet structures; the permanent magnet structure is selected to ensure that the connector can maintain stable magnetic attraction even without power, while the electromagnet structure is selected, it can be designed to turn on or off the magnetic attraction by remote control, thereby achieving more flexible control. The installation box 201 is provided with a mounting hole specifically for installing the third magnetic member 202, and the third magnetic member 202 can extend from the bottom surface of the installation box 201.

[0048] The locking mechanism includes two parallel limit plates 301 and a push claw 302; the two limit plates 301 are arranged on the bottom surface of the installation box 201 and are perpendicular to each other in the direction away from the third magnetic component 202, and the gap between the two limit plates 301 forms a limit groove 303; the push claw 302 is rotatably connected to the bottom of one of the limit plates 301, and the push claw 302 can rotate unidirectionally in the direction close to the third magnetic component 202 when subjected to force and return to its original position under the action of the reset member 304.

[0049] The two limiting plates 301 can be integrally formed with the installation box 201 , for example, manufactured by 3D printing; the third magnetic component 202 can be located in the middle position of the two limiting plates 301 , and at this time, part of the third magnetic component 202 is located in the limiting groove 303 .

[0050] A limiting groove 303 is formed between the limiting plates 301, and the pusher claw 302 is normally affected by the reset member 304 to lock or partially lock the entrance of the limiting groove 303. The first magnetic member 102 or the second magnetic member 104 (depending on the contact direction) that extends into the limiting groove 303 can be blocked in the limiting groove 303 by the pusher claw 302, thereby preventing the first magnetic member 102 or the second magnetic member 104 from detaching. Specifically, whether it is the first magnetic member 102 or the second magnetic member 104, it pushes the pusher claw 302 during the process of extending into the limiting groove 303. The pusher claw 302 overcomes the force of the reset member 304 and rotates toward the direction of the third magnetic member 202. When the first magnetic member 102 or the second magnetic member 104 is attracted to the third magnetic member 202, the pusher claw 302 returns to its original position under the action of the reset member 304. At this time, the two first mounting plates 101 or the two second mounting plates 103 are stuck between the two limit plates 301, and cannot escape due to the restriction of the pusher claw 302 (the pusher claw 302 rotates in one direction and will not rotate in the other direction), thereby achieving locking; of course, the pusher claw 302 can also be moved under human power to release the lock.

[0051] The reset member 304 can be a spring structure, such as a torsion spring, which uses elastic force to reset; the reset member 304 can also be a magnet structure, which uses the specific attraction of magnetic force to the finger 302 to achieve reset. In this case, no physical contact is required, wear is small, and service life is long.

[0052] Example 3

[0053] The auxiliary tool for secondary cable threading provided in this embodiment is a further improvement on the structure and principle shown in Example 1 or Example 2.

[0054] This embodiment mainly provides a feasible structure of the threading end assembly, further enhancing the functionality of the threading end assembly.

[0055] In this embodiment, the threading end assembly also includes a light strip 401 for emitting light, a lamp holder 402 for installing the light strip 401, and a threader 403 for controlling the movement of the threading connector 100. One end of the lamp holder 402 is connected to the threader 403, and the other end is connected to the threading connector 100.

[0056] The light strip 401 can be an LED light strip structure, which provides lighting to help cable routing operations in low-light environments, improving safety and efficiency; the light strip 401 can also be selected in different colors to facilitate distinguishing different working states or signals.

[0057] The lamp holder 402 is used to fix the light strip 401 to ensure that it is stable during use and not easy to fall off. Preferably, the outer wall of the lamp holder 402 is provided with a spiral mounting groove 404, and the light strip 401 is positioned along the spiral laying of the mounting groove 404; this structure can ensure that the light strip is stably fixed on the lamp holder 402, reduce the displacement caused by vibration or accidental collision, and can also increase the visible length of the light strip to a certain extent, thereby improving the lighting effect. The light strip 401 can be powered by a battery provided in the lamp holder 402. In addition, the lamp holder 402 can be connected to the threading connector 100 through a universal joint 404, so that it can provide multi-directional rotation and movement, thereby increasing the flexibility of operation; the structure of the universal joint 404 can be the same as that of the prior art and will not be repeated here.

[0058] The threader 403 is used to control the movement of the threading connector 100 to ensure flexible operation during the threading process; the threader 403 can be made of a steel wire material that is both flexible and strong and has a rubber outer layer, which is easy to thread in various positions and can avoid jamming during the threading process.

[0059] Example 4

[0060] The auxiliary tool for secondary cable threading provided in this embodiment is a further improvement on the structure and principle shown in Example 1 or Example 2.

[0061] This embodiment mainly provides a feasible structure of the lead end assembly, further enhancing the functionality of the lead end assembly.

[0062] As a further improvement to the above technical solution, the lead end assembly also includes a photographing device, and the installation box 201 is provided with a storage slot 203 and a cover 204 for closing the storage slot 203; the photographing device can be used to record the threading process, monitor the working environment or for remote guidance and teaching.

[0063] The shooting device includes a camera 501 for acquiring image information, a control board electrically connected to the camera 501 (for processing the signal acquired by the camera 501) and a battery for power supply; the cover plate 204 is provided with a through hole facing the limit plate 301, the camera 501 is arranged on the cover plate 204 and its camera end is inserted into the through hole, so that the camera 501 can shoot in the direction of the limit plate 301; the control board and the battery are both installed in the storage slot 203.

[0064] In this embodiment, the lead terminal assembly further includes a handle 600 for handheld operation. The handle 600 is connected to the end of the mounting box 201 away from the stop plate 301. The handle 600 is a multi-layered, nested, and retractable long tube structure, allowing the length of the handle 600 to be adjusted. By controlling the length of the handle 600, the lead terminal 200 can be extended to different positions.

[0065] Finally, it should be noted that this article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. Without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. An auxiliary tool for secondary cable threading, comprising a threading end assembly and a lead end assembly; the threading end assembly includes a threading connector, and the lead end assembly includes a lead connector that magnetically engages with the threading connector, characterized in that: The threading connector or the lead connector is provided with a locking mechanism, and when the threading connector and the lead connector are in magnetic attraction contact, the locking mechanism restricts the two from separating.

2. The auxiliary tool for secondary cable threading according to claim 1, characterized in that: The threading connector includes two parallel first mounting plates, a first magnetic member is vertically provided between the two first mounting plates, and two oppositely arranged second mounting plates are vertically provided on the bottom surface of one of the first mounting plates in a direction away from the first magnetic member; a second magnetic member is provided between the bottoms of the two second mounting plates, and the axis of the first magnetic member is perpendicular to the axis of the second magnetic member; The lead connector includes a mounting box, and a third magnetic member for cooperating with the first magnetic member and the second magnetic member is installed at the bottom of the mounting box; The locking mechanism includes two parallel limit plates and a push claw; the two limit plates are arranged on the bottom surface of the installation box and are perpendicular to each other in the direction away from the third magnetic attraction member, and the gap between the two limit plates forms a limit groove; the push claw is rotatably connected to the bottom of one of the limit plates, and the push claw can rotate unidirectionally in the direction close to the third magnetic attraction member when subjected to force and return to its original position under the action of the reset member.

3. The auxiliary tool for secondary cable threading according to claim 2, characterized in that: The first magnetic attraction component, the second magnetic attraction component and / or the third magnetic attraction component are permanent magnet structures or electromagnet structures.

4. The auxiliary tool for secondary cable threading according to claim 2, characterized in that: The threading end assembly also includes a light strip for emitting light, a lamp holder for installing the light strip, and a threader for controlling the movement of the threading connector. One end of the lamp holder is connected to the threader, and the other end is connected to the threading connector.

5. The auxiliary tool for secondary cable threading according to claim 4, characterized in that: The outer wall of the lamp holder is provided with a mounting groove with a spiral structure, and the light strip is positioned along the spiral laying of the mounting groove.

6. The auxiliary tool for secondary cable threading according to claim 4, characterized in that: The lamp holder is connected to the threading connector via a universal joint.

7. An auxiliary tool for secondary cable threading according to any one of claims 2 to 6, characterized in that: The first mounting plate and the second mounting plate are integrally formed, and the mounting box and the limiting plate are integrally formed.

8. An auxiliary tool for secondary cable threading according to any one of claims 2 to 6, characterized in that: The reset element is a spring structure or a magnet structure.

9. An auxiliary tool for secondary cable threading according to any one of claims 2 to 6, characterized in that: The lead terminal assembly further includes a photographing device, and the mounting box is provided with a storage slot and a cover plate for closing the storage slot; The shooting device includes a camera for acquiring image information, a control board electrically connected to the camera, and a battery for powering the battery; a through hole facing the limit plate is provided on the cover plate, the camera is arranged on the cover plate and its camera end is inserted into the through hole; the control board and the battery are both installed in the storage slot.

10. An auxiliary tool for secondary cable threading according to any one of claims 2 to 6, characterized in that: The lead terminal assembly further includes a handle 600 for handheld operation, the handle 600 being connected to an end of the mounting box away from the limiting plate; the handle 600 is a multi-layer nested long tube structure and is retractable.

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