High-voltage grounding wire device and accessory thereof

Abstract

The invention relates to the technical field of power equipment, in particular to a high-voltage grounding wire device and accessories thereof.The high-voltage grounding wire device comprises a U-shaped jointing clamp, the jointing clamp is provided with a first straight arm and a second straight arm, a first contact arm is hinged to the first straight arm, and a second contact arm is hinged to the second straight arm; a first torsional spring is arranged at the hinged position of the first contact arm and the first straight arm, a second torsional spring is arranged at the hinged position of the second contact arm and the second straight arm, the first torsional spring and the second torsional spring enable the first contact arm and the second contact arm to be in a splayed state, and the first contact arm is provided with a first sliding groove extending in the length direction of the first contact arm. The first contact arm is provided with a first sliding groove extending in the length direction of the first contact arm, the second contact arm is provided with a second sliding groove extending in the length direction of the second contact arm, a wire is jointly connected between the groove bottom of the first sliding groove and the groove bottom of the second sliding groove, the part, located outside the first contact arm and the second contact arm, of the wire surrounds to form a circular conductive part, the circular conductive part is used for clamping a cable, and the grounding effect can be enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and particularly to a high-voltage grounding wire device and its accessories. Background Art

[0002] When overhauling a cable line, in order to prevent operators from getting an electric shock, it is usually necessary to ground the cable. The current method of short-circuiting the grounding wire is completed by using an insulating operating rod and a connection clamp to isolate the overhaul area.

[0003] For example, the patent document CN222851674U discloses an extra-high voltage security anti-inductive current drainage grounding device, including a connection clamp. The connection clamp has a connection part and a hook part. A pressing block is arranged in the connection clamp. The bottom end of the pressing block is provided with an adjusting pressing screw that is rotatably connected to the connection clamp. Soft contact surfaces are arranged on the inner surface of the hook part and the upper surface of the pressing block. By rotating the adjusting pressing screw, the hook part and the pressing block are close to each other, so as to realize the pressing of the conductor. However, since the pressing area of the hook part and the pressing block on the conductor is small, the contact resistance increases, affecting the grounding effect. Summary of the Invention

[0004] Based on this, in view of the technical problem of the poor grounding effect of the current grounding device, it is necessary to provide a high-voltage grounding wire device and its accessories.

[0005] The above object is achieved by the following technical solutions: A high-voltage grounding wire device includes a connection clamp. The connection clamp is U-shaped and has two straight arms, namely a first straight arm and a second straight arm. A first contact arm is hinged on the first straight arm, and a second contact arm is hinged on the second straight arm. The first contact arm and the second contact arm both rotate around a horizontal axis. A first torsion spring is arranged at the hinge of the first contact arm and the first straight arm, and a second torsion spring is arranged at the hinge of the second contact arm and the second straight arm. The first torsion spring and the second torsion spring make the first contact arm and the second contact arm in a "V" shape. The first contact arm has a first chute extending along its length direction, and the second contact arm has a second chute extending along its length direction. A wire is commonly connected between the bottom of the first chute and the bottom of the second chute. The part of the wire outside the first contact arm and the second contact arm can surround to form a circular conductive part, and the circular conductive part is used for clamping the cable.

[0006] Furthermore, an adjusting component is also provided on the wiring clip. The adjusting component can automatically adjust the circumference of the circular conductive part to adapt to cables with different diameters. The adjusting component includes a first telescopic arm and a second telescopic arm. The first telescopic arm is slidably arranged in a first chute, and the second telescopic arm is slidably arranged in a second chute. Both the first telescopic arm and the second telescopic arm are sleeved outside the wire. The adjusting component further includes a first driving plate and a second driving plate. The first driving plate is hingedly arranged on the first straight arm, and the rotation of the first driving plate can adjust the length of the first telescopic arm extending out of the first chute. The second driving plate is hingedly arranged on the second straight arm, and the rotation of the second driving plate can adjust the length of the second telescopic arm extending out of the second chute.

[0007] Furthermore, a first bump is provided on the first telescopic arm. The end of the first driving plate is in a blocking fit with the first bump. Thus, when the first driving plate rotates, the end of the first driving plate can push the first bump to move, and further enable the first telescopic arm to slide along the first chute. A second bump is provided on the second telescopic arm. The end of the second driving plate is in a blocking fit with the second bump. Thus, when the second driving plate rotates, the end of the second driving plate can push the second bump to move, and further enable the second telescopic arm to slide along the second chute.

[0008] Furthermore, a first spring is provided between the end of the first telescopic arm located inside the first chute and the bottom of the first chute. The first spring has a tendency to make the first telescopic arm extend out of the first chute. A second spring is provided between the end of the second telescopic arm located inside the second chute and the bottom of the second chute. The second spring has a tendency to make the second telescopic arm extend out of the second chute.

[0009] Furthermore, the length of the second straight arm is greater than that of the first straight arm. A screw is rotatably connected to the second straight arm. A driving ring is coaxially rotatably connected to the outside of the screw. When the screw rotates by itself, the driving ring can move along the axial direction of the screw. The driving ring is fixedly connected to a driving frame through a connecting rod. The driving frame can slide along the length direction of the second straight arm and push the second contact arm and the second driving plate to rotate synchronously, so that the second telescopic arm contracts into the second chute.

[0010] Furthermore, an external thread is provided on the outer peripheral surface of the screw, and a slider is provided on the inner peripheral surface of the driving ring. The slider can slide along the external thread.

[0011] Furthermore, a first avoiding groove is provided on the first contact arm, and the first bump can slide along the first avoiding groove. A second avoiding groove is provided on the second contact arm, and the second bump can slide along the second avoiding groove.

[0012] Furthermore, the wire is a copper wire.

[0013] An accessory for a high-voltage grounding wire device, which is applied to the above high-voltage grounding wire device, includes a grounding wire, and the grounding wire is connected to a second straight arm.

[0014] Further, a locking bolt is threadedly connected to the side surface of the second straight arm, and the grounding wire is wound around the locking bolt.

[0015] The beneficial effects of the present invention are as follows: For the high-voltage grounding wire device and its accessory provided by the present invention, firstly, through the first contact arm and the second contact arm, the wire can form a circular conductive part, and the circular conductive part can wind around the cable for one week and closely adhere to the outer periphery of the cable. Compared with the prior art in which the pressure block and the hook part approach each other to contact the conductor, this can increase the conductive contact area, thereby reducing the contact resistance and enhancing the grounding effect of the high-voltage grounding wire device. And this contact method will not affect the contact area even when the wiring clip shakes, and can ensure a good grounding effect.

[0016] Secondly, an adjustment component is provided so that the circumference of the circular conductive part can be automatically adjusted, and thus it can adapt to cables with different diameters, having a certain generality. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 2 It is a first-state schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 3 It is a side view schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 4 It is Figure 3 the sectional view taken along line A-A in Figure 5 It is a second-state schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 6 It is a third-state schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 7 It is a fourth-state schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 8 It is a partial three-dimensional schematic diagram of a high-voltage grounding wire device provided by an embodiment of the present invention; Figure 9 It is Figure 8 the side view of Figure 10 It is Figure 9 the sectional view taken along line B-B in

[0018] Wherein: 101. Wiring clip; 1011. First straight arm; 1012. Second straight arm; 102. First contact arm; 103. Second contact arm; 104. Second telescopic arm; 105. First telescopic arm; 106. Conductor; 107. First drive plate; 108. Second spring; 109. Screw; 110. Connecting rod; 111. Drive ring; 112. Locking bolt; 113. Second drive plate; 114. Drive frame; 115. Second bump; 116. First bump; 117. First spring. Detailed implementation mode

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the second feature "above" or "below" the second feature, or the first and second features may be indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0022] Such as Figures 1 to 10As shown in the figure, a high-voltage grounding wire device provided by an embodiment of the present invention includes a wiring clip 101. The wiring clip 101 is U-shaped and has two straight arms, namely a first straight arm 1011 and a second straight arm 1012. A first contact arm 102 is hinged on the first straight arm 1011, and a second contact arm 103 is hinged on the second straight arm 1012. The first contact arm 102 and the second contact arm 103 both rotate around a horizontal axis. A first torsion spring is provided at the hinge joint between the first contact arm 102 and the first straight arm 1011, and a second torsion spring is provided at the hinge joint between the second contact arm 103 and the second straight arm 1012. The first torsion spring and the second torsion spring make the first contact arm 102 and the second contact arm 103 in a "V" shape. The first contact arm 102 has a first chute extending along its length direction, and the second contact arm 103 has a second chute extending along its length direction. A wire 106 is commonly connected between the bottom of the first chute and the bottom of the second chute. The part of the wire 106 located outside the first contact arm 102 and the second contact arm 103 can be wound to form a circular conductive part, and the circular conductive part is used for clamping a cable. Among them, the first contact arm 102 and the second contact arm 103 are respectively hinged on the first straight arm 1011 and the second straight arm 1012 through a first hinge shaft and a second hinge shaft (not shown in the figure). The first hinge shaft and the second hinge shaft both extend in the horizontal direction and are located at the position of the U-shaped wiring clip 101 close to the opening.

[0023] The first torsion spring (not shown in the figure) is arranged on the first hinge shaft, and the second torsion spring (not shown in the figure) is arranged on the second hinge shaft. The first contact arm 102 and the second contact arm 103 being in a "V" shape helps to form a circular conductive part of the wire 106. When the cable enters between the first contact arm 102 and the second contact arm 103, the first contact arm 102 and the second contact arm 103 can move away from each other, facilitating the cable to enter the circular conductive part.

[0024] The wire 106 forms a circular conductive part through the first contact arm 102 and the second contact arm 103. The circular conductive part can wind around the cable for one week and closely adhere to the outer periphery of the cable. Compared with the prior art in which the pressing block and the hook part approach each other to contact the conductor, this can increase the conductive contact area, thereby reducing the contact resistance and enhancing the grounding effect of the high-voltage grounding wire device.

[0025] Furthermore, an adjusting assembly is also provided on the wiring clip 101. The adjusting assembly can automatically adjust the circumference of the circular conductive part to adapt to cables of different diameters. The adjusting assembly includes a first telescopic arm 105 and a second telescopic arm 104. The first telescopic arm 105 is slidably disposed in a first chute, and the second telescopic arm 104 is slidably disposed in a second chute. Both the first telescopic arm 105 and the second telescopic arm 104 are sleeved outside the wire 106. The adjusting assembly further includes a first driving plate 107 and a second driving plate 113. The first driving plate 107 is hingedly disposed on the first straight arm 1011, and the rotation of the first driving plate 107 can adjust the length of the first telescopic arm 105 extending out of the first chute. The second driving plate 113 is hingedly disposed on the second straight arm 1012, and the rotation of the second driving plate 113 can adjust the length of the second telescopic arm 104 extending out of the second chute. The first driving plate 107 is disposed on the first straight arm 1011 through a third hinge shaft, and the second driving plate 113 is disposed on the second straight arm 1012 through a fourth hinge shaft. Both the third hinge shaft and the fourth hinge shaft extend in the horizontal direction and are located at a position of the U-shaped wiring clip 101 away from the opening.

[0026] Specifically, as Figure 8 shown, the width of the first telescopic arm 105 is half of the width of the first contact arm 102, and the width of the second telescopic arm 104 is half of the width of the second contact arm 103. In this way, when the first telescopic arm 105 and the second telescopic arm 104 cross and overlap, they will not protrude beyond the first contact arm 102 and the second contact arm 103 in the width direction of the first contact arm 102 and the second contact arm 103, and such a setting makes the structure more compact.

[0027] As Figure 2 shown, when the length of the first telescopic arm 105 extending out of the first chute is longer and the length of the second telescopic arm 104 extending out of the second chute is longer, the length of the wire 106 located outside the first contact arm 102, the first telescopic arm 105, the second contact arm 103, and the second telescopic arm 104 is shorter, and the circumference of the circular conductive part formed by winding this part of the wire 106 is small, so that it can adapt to a cable with a small diameter. As Figure 5 shown, when the length of the first telescopic arm 105 extending out of the first chute is shorter and the length of the second telescopic arm 104 extending out of the second chute is shorter, the length of the wire 106 located outside the first contact arm 102, the first telescopic arm 105, the second contact arm 103, and the second telescopic arm 104 is longer, and the circumference of the circular conductive part formed by winding this part of the wire 106 is large, so that it can adapt to a cable with a large diameter. Thus, the circumference of this circular conductive part can be automatically adjusted, and further adapt to cables of different diameters, having a certain generality.

[0028] A first bump 116 is provided on the first telescopic arm 105, and the end of the first driving plate 107 is in blocking cooperation with the first bump 116. Thus, when the first driving plate 107 rotates, the end thereof can push the first bump 116 to move, and further enable the first telescopic arm 105 to slide along the first sliding groove; a second bump 115 is provided on the second telescopic arm 104, and the end of the second driving plate 113 is in blocking cooperation with the second bump 115. Thus, when the second driving plate 113 rotates, the end thereof can push the second bump 115 to move, and further enable the second telescopic arm 104 to slide along the second sliding groove. In this way, during the contact process between the cable and the first contact arm 102 and the second contact arm 103, both the first contact arm 102 and the second contact arm 103 rotate. The first contact arm 102 drives the first driving plate 107 to rotate, and the second contact arm 103 drives the second driving plate 113 to rotate, and further enable the first telescopic arm 105 to slide along the first sliding groove and the second telescopic arm 104 to slide along the second sliding groove, realizing the contraction of the first telescopic arm 105 and the second telescopic arm 104.

[0029] A first spring 117 is provided between the end of the first telescopic arm 105 located in the first sliding groove and the bottom of the first sliding groove, and the first spring 117 has a tendency to extend the first telescopic arm 105 out of the first sliding groove; a second spring 108 is provided between the end of the second telescopic arm 104 located in the second sliding groove and the bottom of the second sliding groove, and the second spring 108 has a tendency to extend the second telescopic arm 104 out of the second sliding groove. Both the first spring 117 and the second spring 108 are compression springs, and the first spring 117 and the second spring 108 facilitate the elongation and reset of the first telescopic arm 105 and the second telescopic arm 104, thereby promoting the formation of a circular conductive part of the wire 106.

[0030] As Figure 5 shown, the length of the second straight arm 1012 is greater than that of the first straight arm 1011. A screw rod 109 is rotatably connected to the second straight arm 1012. An outer periphery of the screw rod 109 is coaxially rotatably connected with a driving ring 111. When the screw rod 109 rotates self - rotatably, the driving ring 111 can move along the axial direction of the screw rod 109. The driving ring 111 is fixedly connected with a driving frame 114 through a connecting rod 110. The driving frame 114 can slide along the length direction of the second straight arm 1012 and push the second contact arm 103 and the second driving plate 113 to rotate synchronously, so that the second telescopic arm 104 contracts into the second sliding groove.

[0031] Further, an external thread is provided on the outer peripheral surface of the screw rod 109, and a slider is provided on the inner peripheral surface of the driving ring 111. The slider can slide along the external thread, thereby realizing the movement of the driving ring 111 outside the screw rod 109. The screw rod 109 is an insulating rod, and a plug - in groove is provided at the bottom of the screw rod 109. A plurality of hand - held rods can be sequentially plugged into the plug - in groove, and the number of hand - held rods can be adjusted according to the grounding height.

[0032] Further, a first avoidance groove is provided on the first contact arm 102, and the first convex block 116 can slide along the first avoidance groove. A second avoidance groove is provided on the second contact arm 103, and the second convex block 115 can slide along the second avoidance groove. This facilitates the blocking cooperation between the end of the first convex block 116 and the first driving plate 107, and between the end of the second convex block 115 and the second driving plate 113.

[0033] The wire 106 is a copper wire. The copper wire has good electrical conductivity and is easy to bend to form a circular conductive part.

[0034] Further, a locking bolt 112 is also threadedly connected to the side surface of the second straight arm 1012. The locking bolt 112 is used to connect the grounding wire. There are two locking bolts 112, which can enhance the connection effect of the grounding wire.

[0035] Combined with the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows: In the initial state, the high-voltage grounding wire device is in the first state as shown in Figure 2 At this time, the first telescopic arm 105 and the second telescopic arm 104 are cross-set.

[0036] Then, the terminal clamp 101 is hung on the cable and the terminal clamp 101 is moved downward. The cable will push the first contact arm 102 and the second contact arm 103 to rotate. At this time, the high-voltage grounding wire device is in the third state as shown in Figure 6 At this time, an opening is formed between the first contact arm 102 and the second contact arm 103. The middle part of the wire 106 changes from circular to arc-shaped, so as to facilitate the entry of the cable. The rotation of the first contact arm 102 can drive the rotation of the first driving plate 107, so that the first driving plate 107 pushes the first convex block 116 to move, and the first telescopic arm 105 contracts into the first chute. The second driving plate 113 pushes the second convex block 115 to move, and the second telescopic arm 104 contracts into the second chute. In this way, when the cable approaches the wire 106, the contact area between the cable and the first telescopic arm 105 and the second telescopic arm 104 decreases, which can reduce the friction on the cable and avoid damage to the cable.

[0037] After the cable moves into the interior of the wire 106, the first contact arm 102 and the second contact arm 103 are reset under the action of the first torsion spring and the second torsion spring respectively. Under the action of the first spring 117 and the second spring 108, the first telescopic arm 105 and the second telescopic arm 104 extend and reset, so that the wire 106 re-forms a circular conductive part, and the circular conductive part wraps the cable and fits tightly. If the clamped cable has a large diameter, under the action of the first spring 117 and the second spring 108, the extended lengths of the first telescopic arm 105 and the second telescopic arm 104 are short. At this time, the high-voltage grounding wire device is Figure 5The second state shown in

[0038] If the clamped cable has a small diameter, under the action of the first spring 117 and the second spring 108, the extended lengths of the first telescopic arm 105 and the second telescopic arm 104 are longer. At this time, the high-voltage grounding wire device is Figure 2 The first state shown in . In this way, the perimeter of the circular conductive part formed by the wire 106 is reduced, so that the circular conductive part can closely adhere to the outer circumference of the small-diameter cable, ensuring the conductive contact area. In this contact method, even when the terminal clamp 101 shakes, the contact area will not be affected, and a good grounding effect can be ensured.

[0039] When it is necessary to remove the high-voltage grounding wire device from the cable, by rotating the screw 109, the driving ring 111 moves along the axial direction of the screw 109. The driving ring 111 drives the driving frame 114 to slide along the second straight arm 1012, so that the second contact arm 103 and the second driving plate 113 gradually become parallel to the second straight arm 1012. At this time, the high-voltage grounding wire device is Figure 7 The fourth state shown in . The second contact arm 103 moves away from the first contact arm 102, so that an opening is formed between the first contact arm 102 and the second contact arm 103, and the circular conductive part becomes arc-shaped. Then, by moving the screw 109 upward, the terminal clamp 101 is driven to move upward, and the cable can be separated from the terminal clamp 101 through the opening, and the disassembly of the high-voltage grounding device can be realized.

[0040] An accessory of a high-voltage grounding wire device, which is applied to the above high-voltage grounding wire device, includes a grounding wire, and the grounding wire is connected to the second straight arm.

[0041] A locking bolt 112 is threadedly connected to the side surface of the second straight arm 1012, and the grounding wire is wound around the locking bolt 112. The other end of the grounding wire away from the locking bolt 112 is provided with a grounding clamp, and the grounding clamp is used for fixedly connecting to a grounding device.

[0042] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0043] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A high-voltage grounding wire device, characterized in that, The utility model comprises a wiring clamp, which is U-shaped and has two straight arms, namely a first straight arm and a second straight arm. A first contact arm is hinged on the first straight arm, and a second contact arm is hinged on the second straight arm. Both the first contact arm and the second contact arm rotate around a horizontal axis. A first torsion spring is provided at a hinge between the first contact arm and the first straight arm, and a second torsion spring is provided at a hinge between the second contact arm and the second straight arm. The first torsion spring and the second torsion spring make the first contact arm and the second contact arm present an "eight" shape. The first contact arm has a first slide groove extending along its length direction, and the second contact arm has a second slide groove extending along its length direction. A wire is commonly connected between the bottom of the first slide groove and the bottom of the second slide groove. The part of the wire located outside the first contact arm and the second contact arm can surround to form a circular conductive part, and the circular conductive part is used to clamp the cable.

2. The high-voltage grounding wire device according to claim 1, wherein, The wiring clamp is also provided with an adjustment component, which can automatically adjust the circumference of the circular conductive part to adapt to cables of different diameters. The adjustment component includes a first telescopic arm and a second telescopic arm, the first telescopic arm is slidably arranged in a first slide groove, and the second telescopic arm is slidably arranged in a second slide groove, and the first telescopic arm and the second telescopic arm are both sleeved on the outside of the wire. The adjustment component also includes a first driving plate and a second driving plate, the first driving plate is hingedly arranged on the first straight arm, and the rotation of the first driving plate can adjust the length of the first telescopic arm extending from the first slide groove, the second driving plate is hingedly arranged on the second straight arm, and the rotation of the second driving plate can adjust the length of the second telescopic arm extending from the second slide groove.

3. The high-voltage grounding wire device according to claim 2, characterized in that, The first telescopic arm is provided with a first protrusion, and the end of the first driving plate cooperates with the first protrusion so that when the first driving plate rotates, the end of the first driving plate can drive the first protrusion to move, thereby causing the first telescopic arm to slide along the first sliding groove; the second telescopic arm is provided with a second protrusion, and the end of the second driving plate cooperates with the second protrusion so that when the second driving plate rotates, the end of the second driving plate can drive the second protrusion to move, thereby causing the second telescopic arm to slide along the second sliding groove.

4. The high-voltage grounding wire device according to claim 3, characterized in that, A first spring is provided between the end of the first telescopic arm located in the first slide groove and the bottom of the first slide groove, and the first spring has a tendency to cause the first telescopic arm to extend from the first slide groove; a second spring is provided between the end of the second telescopic arm located in the second slide groove and the bottom of the second slide groove, and the second spring has a tendency to cause the second telescopic arm to extend from the second slide groove.

5. The high-voltage grounding wire device according to claim 4, characterized in that, The length of the second straight arm is greater than that of the first straight arm. A screw is rotatably connected to the second straight arm. The outside of the screw is coaxially rotatably connected to a driving ring. When the screw rotates, the driving ring can move along the axial direction of the screw. The driving ring is fixedly connected to a driving frame through a connecting rod. The driving frame can slide along the length direction of the second straight arm and push the second contact arm and the second driving plate to rotate synchronously, so that the second telescopic arm can be retracted into the second sliding groove.

6. The high-voltage grounding wire device according to claim 5, characterized in that, The outer circumferential surface of the screw rod is provided with an external thread, and the inner circumferential surface of the drive ring is provided with a sliding block, and the sliding block can slide along the external thread.

7. The high-voltage grounding wire device according to claim 2, characterized in that, A first avoidance groove is provided on the first contact arm, and the first bump can slide along the first avoidance groove. A second avoidance groove is provided on the second contact arm, and the second bump can slide along the second avoidance groove.

8. The high-voltage grounding wire device according to claim 1, characterized in that, The wire is a copper wire.

9. An accessory for a high-voltage grounding wire device, applied to the high-voltage grounding wire device according to any one of the above claims 1-8, characterized in that, It includes a ground wire, and the ground wire is connected to the second straight arm.

10. The accessory of the high-voltage grounding wire device according to claim 9, characterized in that, A locking bolt is threadedly connected to the side surface of the second straight arm, and the ground wire is wound around the locking bolt.

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