Auxiliary tool for threading lead wire through secondary cable

Abstract

The invention 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 invention, the connection stability of the threading end and the traction end is improved, the disconnection during traction is prevented, and the smooth threading of the lead is ensured.

Description

Technical Field

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

[0002] At present, in the overhaul and technical transformation projects involving secondary specialties, the implementation of overhaul and technical transformation projects is usually tight in time and heavy in tasks, and the efficiency of laying new cables is often an important factor affecting the progress of the construction period; the cables are laid underground and are not easily affected by the external environment, but it increases the difficulty of fault repair, so 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 power systems, but they also have a certain lifespan and need to be replaced after the service life; under normal circumstances, the service life of relay protection devices is about 10-15 years, and the ability to control and protect functions will be weakened if the service life is exceeded. Relay protection and automation devices that meet the working life need to be transformed and replaced, and the process involves the new laying of a large number of secondary cables.

[0003] The current secondary cable threading method uses manual threading, that is, the threading of the secondary cable 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 secondary cable threading method has the problems of great difficulty in secondary cable threading, low efficiency, easy fatigue and injury to operators, and easy damage to the running cables during the threading process.

[0004] In order to solve the above problems, there are various structures of threading auxiliary tools in the prior art. For example, the applicant / inventor of the present invention disclosed a secondary cable auxiliary threading device in the patent with publication number CN117712926A, which includes a threader and a tractor. The threader includes a threading rod for connecting with the target cable and a first suction head arranged at the end of the threading rod. The tractor includes a handle 600 for hand-held operation and a second suction head arranged at the end of the handle 600. The second suction head is magnetically attracted to the first suction head, that is, the threading end and the traction end are connected by magnetic adsorption.

[0005] However, the applicant / inventor of the present invention found during the actual construction process that the threading end and the traction end are connected only by magnetic adsorption, and the connection stability often cannot meet the traction requirements. It is easy to disconnect during traction, which is 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. Summary of the invention

[0007] In view of this, the object of the present invention is to provide an auxiliary tool for secondary cable threading, which is beneficial to improve the connection stability between the threading end and the traction end, prevent the connection from being disconnected during traction, and ensure smooth threading.

[0008] To achieve the above 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 magnetically matched with 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 of the above technical solution, the threading connector includes two first mounting plates arranged in parallel, a first magnetic member is vertically arranged between the two first mounting plates, and two second mounting plates arranged opposite to each other are vertically arranged 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 arranged 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 attraction member for cooperating with the first magnetic attraction member and the second magnetic attraction 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 the direction away from the third magnetic attraction component, 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 component when subjected to force and return to its original position under the action of the reset component.

[0013] As a further improvement to the above technical solution, the first magnetic attraction member, the second magnetic attraction member and / or the third magnetic attraction 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 luminous light strip for emitting light, a lamp holder for installing the luminous 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 spirally structured mounting groove is provided on the outer wall of the lamp holder, and the light strip is positioned along the spiral laying 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 element is a spring structure or a magnet structure.

[0019] As a further improvement to the above technical solution, the lead terminal assembly further includes a photographing device, and the installation 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 power supply; a through hole facing the limit plate is opened on the cover plate, the camera is arranged on the cover plate and its camera end passes through 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 one 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 present invention provides an auxiliary tool for secondary cable threading. When in use, an external worker extends a threading end assembly into a cable trench through an internal pipe of a cable box, and a worker inside the cable trench searches for a threading joint and achieves attraction through the lead joint. Due to the addition of a locking mechanism, the threading joint and the lead joint are magnetically attracted to each other and then restricted from separating by the locking mechanism, thereby improving the connection stability between the threading end and the traction end and preventing disconnection 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 onto 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 achieving fixation of the secondary cable.

[0024] The present invention reduces the power outage operation time and provides a guarantee for ensuring normal power supply restoration; improves operation efficiency and safety. By using a secondary cable threading tool, the cable threading time is significantly reduced, and the working time of operators in a narrow environment with poor visibility is reduced, thereby reducing work risks and improving operation safety; the workload of operators is reduced, making the cable threading process simpler and faster, reducing the physical labor intensity of operators, and meeting the needs of quickly arranging secondary cables in different environments.

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

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their description are used to explain the present invention but do not constitute a limitation of the present invention.

[0027] Figure 1 is a first stereogram of the present invention;

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

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

[0030] Figure 4 for Figure 3 Enlarged view of position B in the middle;

[0031] Figure 5 An exploded view of the threading end assembly of the present invention;

[0032] Figure 6 A three-dimensional diagram of a threading end assembly of the present invention;

[0033] Figure 7 An exploded view of the lead terminal assembly of the present invention;

[0034] Figure 8 is a three-dimensional diagram of a lead terminal assembly of the present invention;

[0035] Fig. 9 A physical diagram of the threading end assembly of the present invention;

[0036] Fig.10 This is a physical picture of the lead terminal assembly of the present invention. DETAILED DESCRIPTION

[0037] 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 in conjunction with the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] 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 magnetically cooperates with the threading connector 100.

[0040] The threading end assembly is mainly used for threading operations, and the lead end assembly is mainly used for lead operations. Their component composition and functions can be the same as those of the prior art, for example, as shown in CN117712926A. The threading connector 100 is the head end component of the threading end assembly, and the lead connector 200 is the head end component of the lead end assembly. The two are adsorbed and contacted by magnetic attraction.

[0041] However, the magnetic attraction is not sufficient 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 the 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 in magnetic attraction contact, the locking mechanism restricts the separation of the two.

[0042] The locking mechanism is a key safety feature that ensures that the two connectors do not accidentally disengage after magnetic attraction and contact. 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.

[0043] Through the above-mentioned 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 finds 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 to each other and then restricted from separating by the locking mechanism, 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 bundles the target secondary cable onto the threading end assembly. The external staff pulls out the threading end assembly, and the threading end assembly is pulled out together with the target secondary cable with the binding belt, and finally the secondary cable is fixed.

[0044] Example 2

[0045] The auxiliary tool for secondary cable threading provided in this embodiment is a further improvement on the structure and principle shown in the first embodiment.

[0046] This embodiment mainly provides a feasible structure of the threading connector 100, the lead connector 200 and the locking mechanism.

[0047] 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 along 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.

[0048] 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, and the first magnetic member 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 member 104 can be cylindrical and coaxially arranged on the rotating shaft.

[0049] 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 vertical in space, so that the first magnetic member 102 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 supply, while the electromagnet structure is selected, and 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.

[0050] 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 the direction away from the third magnetic attraction 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 attraction component 202 when subjected to force and return to its original position under the action of the reset component 304.

[0051] 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 .

[0052] A limiting groove 303 is formed between the limiting plates 301, and the claw 302 is normally acted upon by the reset member 304 to lock or partially lock the entrance of the limiting groove 303. The claw 302 can block the first magnetic member 102 or the second magnetic member 104 (depending on the contact direction) extending into the limiting groove 303 in the limiting groove 303, 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 claw 302 during the process of extending into the limiting groove 303. The push claw 302 overcomes the force of the reset member 304 and rotates in the direction of the third magnetic member 202. After the first magnetic member 102 or the second magnetic member 104 is attracted to the third magnetic member 202, the push 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 push claw 302 (the push claw 302 rotates in one direction and will not rotate in the other direction), thereby achieving locking; of course, the push claw 302 can also be moved under the action of manpower to release the lock.

[0053] 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 claw 302 to achieve reset, in which case no physical contact is required, wear is small, and the service life is long.

[0054] Example 3

[0055] The auxiliary tool for secondary cable threading provided in this embodiment is obtained by further improving the structure and principle shown in Embodiment 1 or Embodiment 2.

[0056] This embodiment mainly provides a feasible structure of the threading end assembly, further enhancing the functionality of the threading end assembly.

[0057] 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.

[0058] The light strip 401 may be an LED light strip structure, which provides lighting to help with cable threading in low-light environments, thereby improving safety and efficiency. The light strip 401 may also be provided in different colors to facilitate distinguishing between different working states or signals.

[0059] 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 mounting groove 404 with a spiral structure, 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.

[0060] 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 has both flexibility and strength and a rubber outer layer, which is easy to thread in various positions and can avoid jamming during the threading process.

[0061] Example 4

[0062] The auxiliary tool for secondary cable threading provided in this embodiment is obtained by further improving the structure and principle shown in Embodiment 1 or Embodiment 2.

[0063] This embodiment mainly provides a feasible structure of the lead end assembly, and further enhances the functionality of the lead end assembly.

[0064] As a further improvement of 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 plate 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.

[0065] 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.

[0066] In this embodiment, the lead terminal assembly further includes a handle 600 for handheld operation, and the handle 600 is connected to the end of the installation box 201 away from the limiting plate 301; the handle 600 is a multi-layer nested long tube structure and can be retracted, so that the length of the handle 600 can be adjusted. By controlling the length of the handle 600, the lead connector 200 can be extended to different positions.

[0067] 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 to help understand the core idea of ​​the present invention. Without departing from the principles of the present invention, the present invention may also be improved and modified, 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 comprises a threading connector, and the lead end assembly comprises a lead connector magnetically matched 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 first mounting plates arranged in parallel, a first magnetic member is vertically arranged between the two first mounting plates, and two second mounting plates arranged opposite to each other are vertically arranged 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 arranged 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 attraction member for cooperating with the first magnetic attraction member and the second magnetic attraction 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 the direction away from the third magnetic attraction component, 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 component when subjected to force and return to its original position under the action of the reset component.

3. The auxiliary tool for secondary cable threading according to claim 2, characterized in that: The first magnetic attraction member, the second magnetic attraction member and / or the third magnetic attraction member 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 with the threading connector through 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 also includes a photographing device, and the installation 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 power supply; a through hole facing the limit plate is opened on the cover plate, the camera is arranged on the cover plate and its camera end passes through 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 also includes a handle 600 for handheld operation, and the handle 600 is connected to an 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.

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