A quick earthing device for a power line

Abstract

This invention discloses a rapid grounding device for substations. The insulating operating rod assembly includes: a detachable sleeve adapted to and connected to a first limiting assembly; an insulating operating rod body connected to the sleeve; and a spring fixing seat, a pressure spring, and a movable elastic block for pushing a threaded rod and moving a movable pressure block, all installed inside the insulating operating rod body. The spring fixing seat is fastened to the insulating operating rod body. One end of the pressure spring is fastened to the spring fixing seat, and the other end is connected to the movable elastic block. The movable elastic block has a handle extending outside the insulating operating rod body. By controlling and changing the position of the operating handle inside the insulating operating rod body, the pushing force of the movable elastic block on the threaded rod is changed accordingly. The rapid grounding device for substations implementing this invention achieves locking of the grounding hook through a small-stroke rotation; its structure is simplified, reducing the physical effort required for operation and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of power operation equipment technology, and in particular to a fast grounding device for substations. Background Technology

[0002] In practical power operations, the threaded grounding wire structure is one of the best solutions to meet the requirements of existing grounding wires, both in terms of physical fastening and current carrying capacity.

[0003] Traditional threaded grounding wires suffer from the following technical problems due to their unreasonable structural design: Disassembly and assembly require multiple rotations of the insulating operating rod to tighten or loosen the threads. This process is time-consuming, and because it involves remote operation via the insulating rod, the labor intensity is also significant. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a fast grounding device for substations, which locks the grounding hook through a small stroke of rotation; the structure is simplified, the physical strength required for operation is reduced, and the work efficiency is improved.

[0005] To address the aforementioned technical problems, this invention provides a rapid grounding device for substations, comprising: a grounding hook, the grounding hook including a grounding hook body for suspending to a conductor portion of the line and a boss connected to the grounding hook body; a sliding assembly adapted to engage with the grounding hook body, the sliding assembly including a movable pressure block and a threaded rod connected to the movable pressure block, the threaded rod passing through the boss; a first limiting assembly sleeved on the threaded rod for clamping or releasing the threaded rod; a second limiting assembly fastened to the first limiting assembly for providing relative rotational support to the first limiting assembly, the second limiting assembly being unidirectionally rotatable relative to the boss; and an insulating operating rod assembly, comprising: a detachable sleeve adapted to engage with the first limiting assembly, an insulating operating rod body connected to the sleeve, and a spring fixing seat, a pressure spring, and a spring for pushing the insulating operating rod body installed inside the insulating operating rod body. A movable elastic block moves in conjunction with a movable threaded rod and a movable pressure block; wherein: a spring fixing seat is fastened to the insulating operating rod body, one end of a pressure spring is fastened to the spring fixing seat, and the other end is connected to the movable elastic block, the movable elastic block is provided with a handle extending outside the insulating operating rod body, wherein: by controlling and changing the position of the operating handle inside the insulating operating rod body, the pushing force of the movable elastic block on the threaded rod is changed in conjunction; the first limiting component includes: a nut compartment, a nut compartment cover installed at the opening end of the nut compartment, a double movable nut installed inside the nut compartment, and a nut lever connected to the double movable nut, the nut lever having a rotating head extending outside the nut compartment, wherein: a sleeve is held in the rotating head of the nut lever, and by operating the rotating sleeve, the nut lever rotates relative to the nut compartment, and the nut lever changes the closing or opening of the double movable nuts in conjunction.

[0006] The movable elastic block retracts and is fixed, and the first limiting component's restriction on the threaded rod is released by rotating the insulating operating rod assembly, allowing the sliding component to slide freely back and forth relative to the grounding hook.

[0007] The nut lever has multiple oblong holes, and the nut pins fastened to the double movable nuts are slidably connected in the oblong holes. The nut lever rotates relative to the nut housing, and the nut pins on the double movable nuts slide along the oblong holes on the nut lever, thereby changing the relative position of the double movable nuts.

[0008] The threaded rod passes sequentially through the nut compartment, the center of the double movable nut, the nut lever, and the nut compartment cover. When the centers of the double movable nuts are closed in opposite directions, the threaded rod is held in place, fixing the relative position of the sliding assembly and the grounding hook. When the centers of the double movable nuts are open in opposite directions, the threaded rod can slide freely back and forth along the body of the insulating operating rod.

[0009] The second limiting component includes: a clamping block, with the two opposite ends of the clamping block being a first assembly end and a second assembly end, respectively; and a ratchet assembly fastened to the first assembly end to unidirectionally limit the rotation direction of the clamping block, wherein: the clamping block is sleeved on the boss, and the second assembly end is fastened to the nut compartment.

[0010] The ratchet assembly includes a ratchet and ratchet locking teeth that are adapted to the ratchet. When the ratchet locking teeth lock the ratchet, the second limiting assembly provides a fixing support force for the nut compartment.

[0011] The ratchet assembly and the clamping block are fastened together by ratchet locking screws, and the nut compartment cover and the nut compartment are fastened together by compartment cover locking screws.

[0012] The sleeve is provided with a locking groove for fitting and engaging with the rotating head outside the nut compartment. The sleeve is fitted onto the outside of the nut compartment cover, and the locking groove engages with the rotating head of the nut lever.

[0013] The insulating operating rod body is provided with a guide groove for guiding and holding the handle of the movable elastic block. The position of the handle in the guide groove is controlled from the outside of the insulating operating rod body, which in turn changes the position of the movable elastic block inside the insulating operating rod.

[0014] The fast grounding device for substations according to the present invention has the following advantages: The insulating operating rod assembly includes: a detachable sleeve adapted to and connected to a first limiting assembly, an insulating operating rod body connected to the sleeve, and a spring fixing seat, a pressure spring, and a movable elastic block for pushing the threaded rod and moving in conjunction with the movable pressure block, all installed inside the insulating operating rod body; wherein: the spring fixing seat is fastened to the insulating operating rod body, one end of the pressure spring is fastened to the spring fixing seat, and the other end is connected to the movable elastic block, and the movable elastic block is provided with a handle extending outside the insulating operating rod body; wherein: by controlling and changing the position of the operating handle inside the insulating operating rod body, the pushing force of the movable elastic block on the threaded rod is changed in conjunction, so that the sliding assembly engages with the grounding hook to suspend and lock the conductor parts such as cylindrical cables, busbars, or copper pillars, and the grounding hook is locked by a small stroke rotation; the structure is simplified, the physical strength required for operation is reduced, and the work efficiency is improved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the explosion of the grounding hook and sliding component of the fast grounding device for substations according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the explosion of the first limiting component in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram showing the closed state of the nut lever and the double movable nut according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram showing the double-piece movable nut in the open state according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the second limiting component in an embodiment of the present invention.

[0021] Figure 6 This is a front view schematic diagram of the ratchet assembly according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the explosion of the insulating operating rod assembly according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the assembly structure of a fast grounding device for substations according to an embodiment of the present invention. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-8 The image shows an embodiment of the fast grounding device for substations according to the present invention.

[0026] The fast grounding device for substations in this embodiment includes: a grounding hook 1, which includes a grounding hook body 11 for suspending to a conductor such as a cylindrical cable, busbar, or copper column of the line, and a boss 12 connected to the grounding hook body 11; and a sliding assembly 2 for mating with the grounding hook body 11, which includes a movable pressure block 21 and a threaded rod 22 connected to the movable pressure block 21, the threaded rod 22 passing through the boss 12.

[0027] A first limiting component 3 is sleeved on the threaded rod 22 to clamp or release the threaded rod 22; a second limiting component 4 is fastened to the first limiting component 3 to provide relative rotational support for the first limiting component 3. The second limiting component 4 is connected to the boss 12 and can rotate unidirectionally relative to the boss 12.

[0028] The insulating operating rod assembly 5 includes: a detachable sleeve 51 adapted to be connected to the first limiting assembly 3, an insulating operating rod body 52 connected to the sleeve 51, and a spring fixing seat 53, a pressure spring 54, and a movable elastic block 55 for pushing the threaded rod 22 and moving the movable pressure block 21 in conjunction with it.

[0029] Wherein: the spring fixing seat 53 is fastened to the insulating operating rod body 52, one end of the pressure spring 54 is fastened to the spring fixing seat 53, and the other end is connected to the movable elastic block 55. The movable elastic block 55 is provided with a handle 555 extending out of the insulating operating rod body 52.

[0030] When the quick grounding device is suspended: by controlling the change of the position of the operating handle 555 inside the insulating operating rod body 52, the pushing force of the movable elastic block 55 on the threaded rod 22 is changed in linkage.

[0031] When the quick grounding device is removed, the movable elastic block 55 retracts and is fixed. The first limiting component 3 releases the limitation on the threaded rod 22 by turning the insulating operating rod assembly 5, and the sliding component 2 can slide freely back and forth relative to the grounding hook 1.

[0032] In specific implementation, the grounding hook 1 includes a grounding hook body 11 and a boss 12. The front end of the grounding hook body 11 has an arc-shaped hook for suspending the wire to a conductor such as a cylindrical cable, busbar, or copper pillar. The boss 12 is a component used to connect the second limiting component 4, allowing the second limiting component 4 to rotate relative to the boss 12. The boss 12 can also prevent the second limiting component 4 from detaching from the grounding hook 1.

[0033] The sliding assembly 2 includes a movable pressure block 21 and a threaded rod 22 connected to the movable pressure block 21. The function of the movable pressure block 21 is to form an arc-shaped contact surface corresponding to the grounding hook body 11. After suspension, it forms a wrap around the grounding hook body 11, which not only physically increases the tightness of the conductor, but also increases the contact area and the current carrying capacity.

[0034] The threaded rod 22 passes through the first limiting component 3 and the second limiting component 4. The threaded rod 22 and the movable pressure block 21 are aligned and will not move relative to each other. Therefore, when the sliding component 2 moves to the left and right, the two move synchronously. The assembly of the sliding component 2, the first limiting component 3 and the second limiting component 4 can be detachably connected to the insulating operating rod assembly 5, thereby enabling the suspension and removal of the quick grounding device.

[0035] The function of the first limiting component 3 is to clamp or release the threaded rod 22. The first limiting component 3 includes: a nut compartment 31, a nut compartment cover 32 installed at the open end of one side of the nut compartment 31, a double-piece movable nut 33 installed inside the nut compartment 31, and a nut lever 34 connected to the double-piece movable nut 33. The nut lever 34 has a rotating head 341 extending outside the nut compartment 31. A sleeve 51 is engaged with the rotating head 341 of the nut lever 34. Rotating the sleeve 51 causes the nut lever 34 to rotate relative to the nut compartment, thus causing the double-piece movable nut to open or close in opposite directions.

[0036] The function of the nut compartment 31 is to shield the internal components and prevent them from being damaged or contaminated and causing jamming. It is also connected to the second limiting component 4. The nut compartment 31 can provide a force support point for the rotation of the double movable nut 33 and the nut lever 34.

[0037] Furthermore, the nut lever 34 has multiple oblong holes 342, and the nut pins 35 fastened to the double movable nuts 33 are slidably connected in the oblong holes 342. The nut lever 34 rotates relative to the nut housing 31, and the nut pins 35 on the double movable nuts 33 slide along the oblong holes 342 on the nut lever 34, thereby changing the relative position of the double movable nuts 33.

[0038] The threaded rod 22 passes sequentially through the nut compartment 31, the center of the double movable nut 33, the nut lever 34, and the nut compartment cover 32. When the double movable nut 33 closes towards the center of the two, it holds the threaded rod 22, fixing the relative position of the sliding assembly 2 and the grounding hook 1. When the centers of the double movable nut 33 open relative to each other, the threaded rod 22 can slide freely back and forth along the insulating operating rod body 52.

[0039] Figure 3 This is a schematic diagram showing the closed state of the nut lever and the double-piece movable nut. When the nut lever 34 rotates clockwise, the oblong hole 342 on the nut lever 34 moves the nut pin 35, thereby causing the separated double-piece movable nut 33 to close towards the center. At this time, the double-piece movable nut 33 receives the force of the nut lever 34. When the nut lever 34 is rotated counterclockwise, under the action of the second limiting component 4, the nut housing 31 will not rotate counterclockwise. At this time, only the nut lever 34 will rotate counterclockwise, thereby further opening the center of the double-piece movable nut 33. Figure 4 As shown, the threaded rod 22 is then loosened.

[0040] The nut compartment cover 32 and the nut compartment 31 are fastened together by the cover locking screw 36. The purpose of this arrangement is: first, to provide support for the other side of the nut pin 35 and enhance the stability of its double-sided fixation; second, to provide support for the force exerted on the right side of the double movable nut 33; and third, to provide protection by sealing the nut compartment 31.

[0041] Furthermore, the second limiting component 4 provides relative rotational support to the first limiting component 3, and it can rotate unidirectionally relative to the boss 12. It includes: a clamping block 41, with its two ends being a first mounting end 411 and a second mounting end 412, respectively; and a ratchet assembly 42 fastened to the first mounting end 411 to unidirectionally limit the rotation direction of the clamping block 41, wherein the clamping block 41 is sleeved on the boss 12, and the second mounting end is fastened to the nut compartment.

[0042] The ratchet assembly 42 includes a ratchet 421 and a ratchet locking tooth 422 adapted to the ratchet 421. When the ratchet locking tooth 422 locks the ratchet 421, the second limiting assembly 4 provides a fixing support force for the nut compartment 31.

[0043] In practice, the ratchet assembly 42 and the clamping block 41 are fastened together by the ratchet locking screw 43. The clamping block 41 cannot move radially and its axial movement is also locked, thus forming a single unit with the ratchet assembly 42, the clamping block 41, and the nut and bolt compartment 31. When the left ratchet 421 rotates clockwise, the ratchet locking teeth 422 resist its rotation, thereby providing support for opening the double-piece movable nut 33 of the first limiting assembly 3. When the ratchet 421 rotates counterclockwise, it can rotate smoothly. Since its rotation mode is adapted to that of the first limiting assembly 3, rotating the ratchet in one direction can cause the double-piece movable nut 33 of the first limiting assembly 3 to rotate in the opposite direction, thereby locking the bolt.

[0044] Furthermore, the insulating operating rod assembly 5 includes: a sleeve 51, an insulating operating rod body 52, a spring fixing seat 53, a pressure spring 54, and a movable elastic block 55 for pushing the threaded rod 22 and moving the movable pressure block 21 in conjunction. The spring fixing seat 53 is fastened to the insulating operating rod body 52, one end of the pressure spring 54 is fastened to the spring fixing seat 53, and the other end is connected to the movable elastic block 55. The movable elastic block 55 is provided with a handle 555 extending outside the insulating operating rod body 52.

[0045] The sleeve 51 is provided with a locking groove 511 for fitting and engaging with the rotating head 341 outside the nut compartment 31. The sleeve 51 is fitted onto the outside of the nut compartment cover 32, and the locking groove 511 engages with the rotating head 341 of the nut lever 34.

[0046] The insulating operating rod body 52 is provided with a guide groove 521 for guiding and holding the handle 555 of the movable elastic block 55. The position of the handle 55 in the guide groove 521 is controlled from the outside of the insulating operating rod body 52, thereby changing the position of the movable elastic block 55 inside the insulating operating rod 52. The guide groove 521 also serves to limit the operation of the movable elastic block 55 and the pressure spring 54, so that the movable elastic block 55 loses its pressing state against the threaded rod 22.

[0047] In this embodiment, the fast grounding device for substations is implemented such that the movable elastic block 55 slides inside the insulating operating rod body 52, and is subjected to the action of the pressure spring 54 on its right side. The handle 555 installed on its side extends to the outside of the insulating operating rod body 52, allowing it to be operated from the outside.

[0048] The movable elastic block 55 is subjected to the pressure of the pressure spring 54, and one side acts on the threaded rod 22, which instantly springs the threaded rod 22 and the sliding component 2 to the position that is about to be locked, shortening the tedious tightening process. By controlling and changing the position of the operating handle 555 inside the insulating operating rod body 52, the pushing force of the movable elastic block 55 on the threaded rod 22 is changed in linkage, so as to achieve the effect of quick installation.

[0049] When the quick grounding device is used for dismantling, the movable elastic block 55 retracts and is fixed. The first limiting component 3 releases the limitation of the threaded rod 22 by turning the insulating operating rod assembly 5, and the sliding component 2 can slide freely back and forth relative to the grounding hook 1.

[0050] The fast grounding device for substations according to the present invention has the following advantages: The insulating operating rod assembly includes: a detachable sleeve adapted to and connected to a first limiting assembly, an insulating operating rod body connected to the sleeve, and a spring fixing seat, a pressure spring, and a movable elastic block for pushing the threaded rod and moving in conjunction with the movable pressure block, all installed inside the insulating operating rod body; wherein: the spring fixing seat is fastened to the insulating operating rod body, one end of the pressure spring is fastened to the spring fixing seat, and the other end is connected to the movable elastic block, and the movable elastic block is provided with a handle extending outside the insulating operating rod body; wherein: by controlling and changing the position of the operating handle inside the insulating operating rod body, the pushing force of the movable elastic block on the threaded rod is changed in conjunction, so that the sliding assembly engages with the grounding hook to suspend and lock the conductor parts such as cylindrical cables, busbars, or copper pillars, and the grounding hook is locked by a small stroke rotation; the structure is simplified, the physical strength required for operation is reduced, and the work efficiency is improved.

Claims

1. A fast grounding device for substations, characterized in that, include: A grounding hook, the grounding hook including a grounding hook body for suspending to a conductor portion of a line and a boss connected to the grounding hook body; A sliding assembly for mating with the grounding hook body, the sliding assembly including a movable pressure block and a threaded rod connected to the movable pressure block, the threaded rod passing through the boss; A first limiting assembly is fitted onto the threaded rod to clamp or release the threaded rod; A second limiting component, which is fastened to the first limiting component, is used to provide relative rotational support to the first limiting component. The second limiting component can rotate unidirectionally relative to the boss. An insulating operating rod assembly includes: a detachable sleeve adapted to and connected to the first limiting assembly; an insulating operating rod body connected to the sleeve; and a spring fixing seat, a pressure spring, and a movable elastic block for pushing the threaded rod and moving the movable pressure block together, all installed inside the insulating operating rod body; wherein: The spring fixing seat is fastened to the insulating operating rod body. One end of the pressure spring is fastened to the spring fixing seat, and the other end is connected to the movable elastic block. The movable elastic block is provided with a handle that extends out of the insulating operating rod body. By controlling and changing the position of the handle inside the insulating operating rod body, the pushing force of the movable elastic block on the threaded rod is changed in a linkage manner. The first limiting assembly includes: a nut compartment, a nut compartment cover installed at the open end of one side of the nut compartment, a double-piece movable nut installed inside the nut compartment, and a nut lever connected to the double-piece movable nut, wherein the nut lever has a rotating head extending out of the nut compartment, wherein: The sleeve is held in place by the rotating head of the nut lever. Rotating the sleeve causes the nut lever to rotate relative to the nut housing, and the nut lever in turn changes the direction of the two movable nuts to close or open.

2. The fast grounding device for substations as described in claim 1, characterized in that, The movable elastic block retracts and is fixed. The first limiting component's restriction on the threaded rod is released by screwing the insulating operating rod assembly. The sliding component can slide freely back and forth relative to the grounding hook.

3. The fast grounding device for substations as described in claim 1, characterized in that, The nut lever has multiple oblong holes, and the nut pins fastened to the double movable nuts are slidably connected in the oblong holes. The nut lever rotates relative to the nut housing, and the nut pins on the double movable nuts slide along the oblong holes on the nut lever, thereby changing the relative position of the double movable nuts.

4. The fast grounding device for substations as described in claim 3, characterized in that, The threaded rod passes sequentially through the nut compartment, the center of the double-piece movable nut, the nut lever, and the nut compartment cover; When the centers of the two movable nuts are closed facing each other, the threaded rod is held in place, fixing the relative position of the sliding assembly and the grounding hook; when the centers of the two movable nuts are opened facing each other, the threaded rod can slide freely back and forth along the body of the insulating operating rod.

5. The fast grounding device for substations as described in claim 1, characterized in that, The second limiting component includes: The clamping block has a first assembly end and a second assembly end at its two opposite ends. A ratchet assembly fastened to the first mounting end for unidirectionally restricting the rotation direction of the clamping block, wherein the clamping block is sleeved on the boss, and the second mounting end is fastened to the nut compartment.

6. The fast grounding device for substations as described in claim 5, characterized in that, The ratchet assembly includes a ratchet and ratchet locking teeth adapted to the ratchet. When the ratchet locking teeth engage the ratchet, the second limiting assembly provides a fixing support force for the nut compartment.

7. The fast grounding device for substations as described in claim 5, characterized in that, The ratchet assembly and the clamping block are fastened together by ratchet locking screws, and the nut compartment cover and the nut compartment are fastened together by compartment cover locking screws.

8. The fast grounding device for substations as described in claim 1, characterized in that, The sleeve is provided with a locking groove for fitting and engaging with the rotating head outside the nut compartment, wherein: the sleeve is sleeved on the outside of the nut compartment cover, and the locking groove engages with the rotating head of the nut lever.

9. The fast grounding device for substations as described in claim 1 or 2, characterized in that, The insulating operating rod body is provided with a guide groove for guiding and holding the handle of the movable elastic block. The position of the handle in the guide groove is controlled from the outside of the insulating operating rod body, thereby changing the position of the movable elastic block inside the insulating operating rod.

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