Ultra-high voltage anti-overturning grounding clamp

Abstract

The invention provides an ultra-high voltage anti-overturning grounding clamp, and relates to the technical field of power transmission line maintenance equipment, the ultra-high voltage anti-overturning grounding clamp comprises two clamping plates, the clamping plates are bent plates, the middle parts of the two clamping plates are rotatably connected, and the inner sides of the two clamping plates are provided with oppositely arranged contact surfaces; the driving ropes are respectively connected with the upper ends of the two clamping plates; the telescopic rod is connected to the lower end of one clamping plate; and the balancing weight is connected to the lower end of the telescopic rod. The grounding wire clamp has the beneficial effects that the interference of external force is resisted by using the torque generated by the gravity of the balancing weight, so that the wire clamp does not turn over when being influenced by the external force such as natural wind power and the gravity of the grounding wire in the working process of clamping the grounding wire, and can be always kept in a vertical state; the safety and reliability of the automatic grounding work of the ultra-high voltage transmission line are improved, and the risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line maintenance equipment, and in particular to an ultra-high voltage anti-flip grounding clamp. Background Art

[0002] When the UHV transmission line is shut down for maintenance or other work, it is necessary to use a grounding clamp to ground the UHV transmission line to prevent the equipment from suddenly receiving power and the induced voltage generated by the adjacent high-voltage live equipment from harming the human body, and at the same time discharge the residual charge of the power-off equipment. Traditional grounding clamps are mostly manual throwing and hanging tongue clamps, which use internally installed torsion springs to provide the necessary clamping force, and have exposed serious technical defects in actual application. The most prominent problem is that the grounding clamp is easily affected by external environmental factors and changes its position when it is working. Especially in harsh outdoor working environments, under the combined influence of various external forces such as the continuous action of natural wind, vibration caused by weather changes, and the tension generated by the deadweight of the grounding copper wire, the manual throwing and hanging tongue clamp installed on the conductor often rotates and flips to varying degrees. This flipping phenomenon not only affects the normal operation of the wire clamp, but more seriously, it makes subsequent maintenance work difficult. With the modernization and intelligence of power system maintenance methods, more and more operations have begun to use automated tools such as robots and drones. However, these advanced equipment are often powerless when faced with flipped wire clamps and are unable to accurately identify and safely remove them. This seriously restricts the development of intelligent operation and maintenance, increases operational risks, reduces work efficiency, and affects the safe and reliable operation of the power system. Summary of the invention

[0003] In view of this, in order to solve the above-mentioned problems existing in the grounding operation of the ultra-high voltage transmission line by the grounding clamp, an embodiment of the present invention provides an ultra-high voltage anti-flip grounding clamp.

[0004] An embodiment of the present invention provides an ultra-high voltage anti-flip grounding clamp, comprising:

[0005] Two clamping plates, the clamping plates are bent plates, the middle parts of the two clamping plates are rotatably connected, and the inner sides of the two clamping plates are provided with contact surfaces arranged opposite to each other;

[0006] A driving rope, which is respectively connected to the upper ends of the two clamping plates;

[0007] A telescopic rod connected to a lower end of the clamping plate;

[0008] and a counterweight block connected to the lower end of the telescopic rod.

[0009] Furthermore, the telescopic rod is a multi-section self-locking slide rail with adjustable length.

[0010] Furthermore, the counterweight block is detachably connected to the lower end of the telescopic rod.

[0011] Furthermore, a connecting hole is provided at the lower end of the telescopic rod, and a fixing hole is provided at the counterweight block, and the connecting hole is aligned with the fixing hole and connected by bolts.

[0012] Furthermore, the counterweight block is a cylinder, and the fixing hole is coaxially arranged with the counterweight block.

[0013] Furthermore, a rope hole is provided at the upper end of the clamping plate, and one end of the driving rope is connected to the rope hole.

[0014] Furthermore, a rotating shaft is provided at the upper end of the clamping plate, the rotating shaft passes through the upper end of the rope hole, and one end of the driving rope is connected to the rotating shaft.

[0015] Furthermore, the contact surface is an arc-shaped concave surface.

[0016] Furthermore, both side surfaces of each of the clamping plates are provided with connecting ears extending toward the other clamping plate, and the two connecting ears of one clamping plate are inserted into the two connecting ears of the other clamping plate and are rotatably connected via a pin shaft.

[0017] Furthermore, a first mounting hole is provided at the lower end of one of the clamping plates, and a second mounting hole is provided at the lower end of the other clamping plate, the first mounting hole is connected to the upper end of the telescopic rod, and the second mounting hole is used to connect a ground wire.

[0018] The beneficial effects brought about by the technical solution provided by the embodiments of the present invention are as follows: an ultra-high voltage anti-flip grounding clamp of the present invention is an adjustable wire clamp composed of two clamping plates. The two clamping plates are driven together by a driving rope to clamp the transmission line, and a telescopic rod and a counterweight block are provided at the bottom of the clamping plate. The torque generated by the gravity of the counterweight block is used to resist the interference of external forces, so that when the wire clamp is affected by external forces such as natural wind force and the gravity of the grounding wire during the working process of clamping the grounding wire, it will not flip over and can always maintain a vertical state, thereby improving the safety and reliability of the automatic grounding work of the ultra-high voltage transmission line and reducing the risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an ultra-high voltage anti-flip grounding clamp of the present invention;

[0020] Figure 2 This is a connection diagram of two wire clamps.

[0021] In the figure: 1, splint; 2, telescopic rod; 3, counterweight; 4, fixing hole; 5, connecting ear; 6, contact surface; 7, rope hole; 8, rotating shaft; 9, first mounting hole; 10, second mounting hole; 100, transmission line. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. The following is a preferred embodiment of the present invention, which is intended to provide a basic understanding of the present invention, but is not intended to confirm the key or decisive elements of the present invention or to limit the scope of protection.

[0023] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0024] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0026] It should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figure 1 and 2 An embodiment of the present invention provides an ultra-high voltage anti-flip grounding clamp, which mainly includes two clamping plates 1, a driving rope (not shown in the figure), a telescopic rod 2 and a counterweight block 3.

[0028] The two clamping plates 1 are used to clamp the power transmission line 100. Specifically, the clamping plates 1 are bent plates, the middle parts of the two clamping plates 1 are rotatably connected, and the inner sides of the two clamping plates 1 are provided with contact surfaces 6 arranged opposite to each other.

[0029] Among them, the bending plate is an obtuse-angle bending plate, and the two side surfaces of each of the splints 1 are provided with connecting ears 5 extending toward the other splint 1, and the two connecting ears 5 of one splint 1 are inserted into the two connecting ears 5 of the other splint 1 and are rotatably connected through a pin shaft.

[0030] The contact surface 6 is used to contact the power transmission line 100 when the power transmission line 100 is clamped.

[0031] The contact surface 6 is an arc-shaped concave surface. When the upper parts of the two clamping plates 1 are closed, the two contact surfaces 6 can clamp the power transmission line 100.

[0032] The driving rope is connected to the upper ends of the two clamps 1 respectively, and the driving rope can pull the upper parts of the two clamps 1 to open relatively and the lower parts to close relatively, so as to clamp the power transmission line 100. Specifically, a rope hole 7 is provided at the upper end of the clamp 1, and one end of the driving rope is connected to the rope hole 7.

[0033] Generally, the driving rope is driven by a motor and a reel, with the two ends of the driving rope being led outward from the rope hole 7 respectively and the middle part passing around the reel, and the motor drives the reel to rotate, driving the driving rope to pull the two splints 1 at the same time, so that the upper parts of the two splints 1 are relatively opened.

[0034] In some embodiments, a rotating shaft 8 is provided at the upper end of the clamping plate 1, and the rotating shaft 8 passes through the upper end of the rope hole 7, and one end of the driving rope is connected to the rotating shaft 8. In actual use, both ends of the rotating shaft 8 are slidably mounted on the slide rail, so that the rotating shaft 8 moves along a predetermined direction, so that the upper ends of the two clamping plates 1 are stably relatively close.

[0035] The upper end of the telescopic rod 2 is connected to the lower end of a clamping plate 1. In this embodiment, a lower end of a clamping plate 1 is provided with a first mounting hole 9, and the first mounting hole 9 is connected to the upper end of the telescopic rod 2, which can be connected by bolts.

[0036] The counterweight block 3 is connected to the lower end of the telescopic rod 2. The gravity of the counterweight block 3 can generate torque on the two clamping plates 1, and the torque is used to resist the interference of external forces to prevent the two clamping plates 1 from turning over. The shape of the counterweight block 3 can be flexibly set according to the actual application scenario. For example, in this embodiment, the counterweight block 3 is cylindrical.

[0037] The counterweight block 3 is generally detachably connected to the lower end of the telescopic rod 2, so that the counterweight blocks 3 of different weights can be replaced. In this embodiment, the lower end of the telescopic rod 2 is provided with a connecting hole, and the counterweight block 3 is provided with a fixing hole 4, which is coaxially arranged with the counterweight block 3, and the fixing hole 4 is aligned with the axial center hole and is fastened and connected by bolts.

[0038] The length of the telescopic rod 2 serves as the lever arm of the torque generated by the gravity of the counterweight 3. The length of the telescopic rod 2 can be freely adjusted, so that the magnitude of the torque generated by the gravity of the counterweight 3 can be adjusted according to actual needs. As in this embodiment, the telescopic rod 2 selects a multi-section self-locking slide rail with adjustable length. The multi-section self-locking slide rail has a self-locking function and can be self-locked after being adjusted to any length as a whole.

[0039] It should be noted that the maximum torque M that the counterweight block 3 can provide is:

[0040] M=mgsinθ*L*n

[0041] Where: m——mass of counterweight;

[0042] g——acceleration due to gravity;

[0043] θ——Angle between the multi-section slide rail and the vertical direction;

[0044] L——single slide rail length;

[0045] n——Number of slide rail sections.

[0046] In actual operation, the grounding wire is generally installed on the other clamping plate 1. As in this embodiment, the lower end of the other clamping plate 1 is provided with a second mounting hole 10, and the second mounting hole 10 is used to connect the grounding wire. One end of the grounding wire is installed in the second mounting hole 10. Then, by selecting a suitable mass counterweight block 3 and the number of slide rail sections, it can effectively prevent the grounding wire from swinging and causing the two clamping plates 1 to flip due to wind or other external forces when the two clamping plates 1 are working.

[0047] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0048] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultra-high voltage anti-flip grounding clamp, characterized in that: include: Two clamping plates, the clamping plates are bent plates, the middle parts of the two clamping plates are rotatably connected, and the inner sides of the two clamping plates are provided with contact surfaces arranged opposite to each other; A driving rope, which is respectively connected to the upper ends of the two clamping plates; A telescopic rod connected to a lower end of the clamping plate; and a counterweight block connected to the lower end of the telescopic rod.

2. The UHV anti-flip grounding clamp according to claim 1, characterized in that: The telescopic rod is a multi-section self-locking slide rail with adjustable length.

3. The UHV anti-flip grounding clamp according to claim 1, characterized in that: The counterweight block is detachably connected to the lower end of the telescopic rod.

4. The UHV anti-flip grounding clamp according to claim 3, characterized in that: The lower end of the telescopic rod is provided with a connecting hole, and the counterweight block is provided with a fixing hole. The connecting hole is aligned with the fixing hole and is connected by bolts.

5. The UHV anti-flip grounding clamp according to claim 4, characterized in that: The counterweight block is a cylinder, and the fixing hole is coaxially arranged with the counterweight block.

6. The UHV anti-flip grounding clamp according to claim 1, characterized in that: A rope hole is provided at the upper end of the clamping plate, and one end of the driving rope is connected to the rope hole.

7. The UHV anti-flip grounding clamp according to claim 6, characterized in that: A rotating shaft is arranged at the upper end of the clamping plate, the rotating shaft passes through the upper end of the rope hole, and one end of the driving rope is connected to the rotating shaft.

8. The UHV anti-flip grounding clamp according to claim 1, characterized in that: The contact surface is an arc-shaped concave surface.

9. The UHV anti-flip grounding clamp according to claim 1, characterized in that: Both sides of each clamping plate are provided with connecting ears extending toward the other clamping plate, and the two connecting ears of one clamping plate are inserted into the two connecting ears of the other clamping plate and are rotatably connected through a pin shaft.

10. The UHV anti-flip grounding clamp according to claim 1, characterized in that: A first mounting hole is provided at the lower end of one of the clamping plates, and a second mounting hole is provided at the lower end of the other clamping plate. The first mounting hole is connected to the upper end of the telescopic rod, and the second mounting hole is used to connect the grounding wire.

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