Ice-melting grounding isolation switch and power transmission tower

Abstract

The application provides a kind of ice melting grounding isolating switch and power transmission tower, including vertical switch base, switch body and power-on state switching mechanism, switch body includes ice melting mechanism, grounding mechanism and connecting mechanism, ice melting mechanism is cantilevered at the bottom of vertical switch base, grounding mechanism is cantilevered on switch base and is close to ice melting mechanism, connecting mechanism includes fixed end and connecting end, fixed end is fixedly connected to the top of vertical switch base, the top of power-on state switching mechanism is hinged on connecting end, power-on state switching mechanism has first node position and second node position. By setting such isolating switch structure on the power transmission tower, the switching between grounding state and ice melting state is realized by quickly switching the power-on state switching mechanism between the first node position and the second node position, which greatly reduces the difficulty of converting the tower ground wire to the ice melting circuit, and improves the efficiency and reliability of ice melting operation.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switch technology, and in particular to an ice-melting grounding disconnect switch and a transmission tower. Background Technology

[0002] Transmission lines are prone to icing under extreme low temperature and humid climate conditions. When icing occurs, it will have a great impact on the transmission lines. If the amount of icing exceeds the line's carrying capacity, it will cause irreversible damage to the transmission lines, leading to line breakage or tower deformation and collapse.

[0003] When ice accumulation is detected on the ground wire, promptly initiating ground wire de-icing is usually the most effective disaster prevention and mitigation measure. Existing technologies typically use DC de-icing devices for de-icing. Normally, when de-icing is not required, the ground wire of the tower is in a grounded state. When de-icing is required, the ground wire connected to the tower needs to be switched from a grounded state to an ungrounded state, and reliably and quickly connected to the de-icing current generator circuit. However, the entire process is slow and has low implementation efficiency.

[0004] Therefore, it is necessary to propose an ice-melting grounding disconnect switch and transmission tower to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide a de-icing grounding disconnect switch to solve the problem of slow switching and low implementation efficiency in the existing technology of using DC de-icing devices for de-icing operations.

[0006] To achieve the above objectives, the present invention provides an ice-melting grounding disconnect switch, comprising a vertical switch base, a switch body, and a power-on state switching mechanism. The switch body is connected to one side of the vertical switch base, and the power-on state switching mechanism is rotatably connected to the switch body; wherein,

[0007] The switch body includes an ice-melting mechanism, a grounding mechanism, and a connecting mechanism arranged sequentially from bottom to top along the height direction of the vertical switch base; wherein, the ice-melting mechanism is cantilevered at the bottom of the vertical switch base, the grounding mechanism is cantilevered on the switch base and close to the ice-melting mechanism, and the connecting mechanism includes a fixed end and a connecting end arranged opposite to each other, the fixed end is fixedly connected to the top of the vertical switch base, and the connecting end is cantilevered from the fixed end in a direction away from the vertical switch base;

[0008] The power-on state switching mechanism is located between the connecting mechanism and the grounding mechanism. The top end of the power-on state switching mechanism is hinged to the connecting end. The power-on state switching mechanism has a first node position and a second node position.

[0009] When the power-on state switching mechanism is in the first node position, the bottom end of the power-on state switching mechanism is connected to the grounding mechanism, and the disconnecting switch is in the grounding state; when the power-on state switching mechanism is in the second node position, the bottom end of the power-on state switching mechanism is connected to the de-icing mechanism, and the disconnecting switch is in the de-icing state.

[0010] Preferably, the power-on state switching mechanism includes a hook and two contact arms disposed opposite to each other on both sides of the connecting mechanism, wherein the connecting end of the connecting mechanism has a connecting hole.

[0011] The tops of the two blade arms are rotatably connected to the connecting end of the connecting mechanism via pins passing through the connecting holes. The hook is fixed between the two blade arms, and the bottom of the hook protrudes downwards.

[0012] Preferably, the ice-melting mechanism includes a bracket, a contact insulator, and a current-carrying stationary contact. The bracket is cantilevered at the bottom of the vertical switch base. One end of the contact insulator is connected to the bracket. The current-carrying stationary contact is inclined at the other end of the contact insulator, and a current-carrying groove is provided at the high end of the current-carrying stationary contact for the hook to engage.

[0013] Preferably, the grounding mechanism includes a grounding stationary contact, which includes a first end and a second end. The first end of the grounding stationary contact is connected to the vertical switch base, and the second end of the grounding stationary contact is bent. The second end of the grounding stationary contact has a grounding groove for the hook to engage. The current-carrying groove, the grounding groove, and the movement path of the protrusion of the hook all have a limiting intersection point.

[0014] Preferably, the flow groove and the grounding groove are located at the same height.

[0015] Preferably, the connecting mechanism includes a knife arm insulator and a rotating support. The knife arm insulator is cantilevered on the top of the vertical switch base. The rotating support is connected to the knife arm insulator and has a connecting hole. The tops of the two contact knife arms are rotatably connected to the rotating support through the connecting hole by a pin.

[0016] Preferably, the connecting mechanism further includes a terminal block, which is connected between the knife arm insulator and the rotating support.

[0017] Preferably, both the flow groove and the grounding groove are rectangular, and the flow groove, the grounding groove, and the hook are arranged coaxially.

[0018] Preferably, the width of the flow groove and the grounding groove is 30cm to 50cm.

[0019] The present invention also provides a power transmission tower, including a tower body and a de-icing grounding disconnect switch as described above, wherein the vertical switch base of the de-icing grounding disconnect switch is fixedly connected to the tower body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides an ice-melting grounding disconnect switch and a transmission tower, comprising a vertical switch base, a switch body, and a power-on state switching mechanism. The switch body is connected to one side of the vertical switch base, and the power-on state switching mechanism is rotatably connected to the switch body. The switch body includes an ice-melting mechanism, a grounding mechanism, and a connecting mechanism arranged sequentially from bottom to top along the height direction of the vertical switch base. The ice-melting mechanism is cantilevered at the bottom of the vertical switch base, and the grounding mechanism is cantilevered on the switch base and close to the ice-melting mechanism. The connecting mechanism includes a fixed end and a connecting end arranged opposite to each other. The fixed end is fixedly connected to the top of the vertical switch base, and the connecting end is cantilevered from the fixed end in a direction away from the vertical switch base. The power-on state switching mechanism is located between the connecting mechanism and the grounding mechanism, and the top end of the power-on state switching mechanism is hinged to the connecting end. The power-on state switching mechanism has a first node position and a second node position. By installing such a disconnecting switch structure on the transmission tower, and rapidly switching its energization state between the first and second node positions to achieve the switching between grounding and de-icing states, the difficulty of converting the tower ground wire to the de-icing circuit is greatly reduced, and the efficiency and reliability of de-icing operations are improved. Attached Figure Description

[0022] 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic elevation view of an application scenario during the ice-melting state in one embodiment of the present invention;

[0024] Figure 2 This is a schematic elevation view of an application scenario in the grounding state according to one embodiment of the present invention;

[0025] Figure 3 This is a partially enlarged schematic diagram of the ice-melting state in one embodiment of the present invention;

[0026] Figure 4 This is a partially enlarged schematic diagram of the grounding state in one embodiment of the present invention;

[0027] Figure 5 This is a schematic elevation view of the overall structure in one embodiment of the present invention.

[0028] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] Explanation of icon numbers:

[0030] 10. Vertical switch base; 20. Switch body; 210. De-icing mechanism; 211. Bracket; 212. Contact insulator; 213. Current-carrying stationary contact; 2131. Current-carrying groove; 220. Grounding mechanism; 221. Grounding stationary contact; 2211. Grounding groove; 230. Connection mechanism; 231. Knife arm insulator; 232. Rotating support; 233. Terminal block; 30. Power-on state switching mechanism; 310. Hook; 320. Contact knife arm; 40. Tower body. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0032] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0035] Please see the appendix Figure 1-5 An embodiment of the present invention provides an ice-melting grounding disconnect switch, comprising a vertical switch base 10, a switch body 20, and a power-on state switching mechanism 30. The switch body 20 is connected to one side of the vertical switch base 10, and the power-on state switching mechanism 30 is rotatably connected to the switch body 20. First, it should be noted that, unlike conventional ice-melting systems that typically use DC ice-melting devices, where the tower's ground wire is usually grounded when ice-melting is not required, ice-melting requires switching the ground wire connected to the tower from a grounded state to an ungrounded state and reliably connecting it quickly to the ice-melting current generator circuit. However, this process is slow and inefficient. This application addresses these shortcomings by providing an ice-melting grounding disconnect switch. Specifically:

[0036] The switch body 20 includes an ice-melting mechanism 210, a grounding mechanism 220, and a connecting mechanism 230 arranged sequentially from bottom to top along the height direction of the vertical switch base 10. The ice-melting mechanism 210 is cantilevered at the bottom of the vertical switch base 10, the grounding mechanism 220 is cantilevered on the switch base and close to the ice-melting mechanism 210, and the connecting mechanism 230 includes a fixed end and a connecting end arranged opposite to each other. The fixed end is fixedly connected to the top of the vertical switch base 10, and the connecting end is cantilevered from the fixed end in a direction away from the vertical switch base 10.

[0037] Specifically, the de-icing grounding disconnect switch includes a vertical switch base 10, a switch body 20, and a power-on state switching mechanism 30. The vertical switch base 10 extends vertically and is used to fix it to the transmission tower, while also providing a fixed mounting point for the switch body 20. The switch body 20 includes a de-icing mechanism 210, a grounding mechanism 220, and a connecting mechanism 230, which are arranged sequentially from bottom to top along the height direction of the vertical switch base 10. The de-icing mechanism 210 is used to form a current-carrying circuit with the de-icing current generator when the disconnect switch is connected to the de-icing mechanism 210, thus entering the de-icing state. Its cantilever is located at the bottom of the vertical switch base 10. The grounding mechanism 220 is used to connect the disconnect switch to the grounding mechanism 220. At 0:00, the transmission tower maintains its grounding state during normal operation. It is located on the switch base and close to the de-icing mechanism 210. This allows for closer proximity when switching operating states via the power-on state switching mechanism 30, thus accelerating the switching speed while ensuring sufficient switching space and improving switching efficiency. The connecting mechanism 230 includes a fixed end (not shown in the figure) and a connecting end (not shown in the figure) arranged opposite to each other. Since it is used for the installation and connection of the power-on state switching mechanism 30, the fixed end is fixedly connected to the top of the vertical switch base 10, and the connecting end is cantilevered from the fixed end in a direction away from the vertical switch base 10, so that the power-on state switching mechanism 30 can be connected to the connecting end.

[0038] The power-on state switching mechanism 30 is disposed between the connecting mechanism 230 and the grounding mechanism 220. The top end of the power-on state switching mechanism 30 is hinged to the connecting end. The power-on state switching mechanism 30 has a first node position and a second node position. When the power-on state switching mechanism 30 is in the first node position, the bottom end of the power-on state switching mechanism 30 is connected to the grounding mechanism 220, and the disconnecting switch is in a grounded state. When the power-on state switching mechanism 30 is in the second node position, the bottom end of the power-on state switching mechanism 30 is connected to the de-icing mechanism 210, and the disconnecting switch is in a de-icing state.

[0039] In detail, the power-on state switching mechanism 30 is disposed between the connecting mechanism 230 and the grounding mechanism 220, and the top end of the power-on state switching mechanism 30 is hinged to the connecting end, so that the bottom end of the power-on state switching mechanism 30 can swing around the connecting end to facilitate the switching of working states. When the power-on state switching mechanism 30 is in the grounding / ice melting working state, it has different first node positions and second node positions.

[0040] Specifically, when the power-on state switching mechanism 30 is in the first node position, that is, when the bottom end of the power-on state switching mechanism 30 swings to the grounding mechanism 220 and is firmly connected to the grounding mechanism 220, the disconnect switch is in the grounding state; when the power-on state switching mechanism 30 is in the second node position, that is, when the bottom end of the power-on state switching mechanism 30 swings to the de-icing mechanism 210 and is firmly connected to the de-icing mechanism 210, the disconnect switch is in the de-icing state. This addition of the disconnect switch enables rapid switching between different states, improving the efficiency and reliability of the de-icing operation. For details, please refer to the appendix. Figure 1-2 .

[0041] In a preferred embodiment of the present invention, the power-on state switching mechanism 30 includes a hook 310 and two contact arms 320 disposed opposite to each other on both sides of the connecting mechanism 230. The connecting end of the connecting mechanism 230 is provided with a connecting hole. The tops of the two contact arms 320 are rotatably connected to the connecting end of the connecting mechanism 230 by a pin passing through the connecting hole. The hook 310 is fixed between the two contact arms 320, and the bottom of the hook 310 forms a downward protrusion.

[0042] It should be noted that the power-on state switching mechanism 30 includes a hook 310 and two contact arms 320. The two contact arms 320 are arranged opposite each other on both sides of the connecting mechanism 230 to form a space between them, so that the hook 310 can be fixed between the two contact arms 320. When the contact arms 320 swing to the grounding mechanism 220 or the ice-melting mechanism 210, the two contact arms 320 are arranged on both sides of the grounding mechanism 220 or the ice-melting mechanism 210, and the hook 310 located in the middle can be connected to the grounding mechanism 220 or the ice-melting mechanism 210. The bottom of the hook 310 forms a downward protrusion, which is used to better contact the grounding mechanism 220 or the ice-melting mechanism 210 for connection. Please refer to the appendix for details. Figure 3 .

[0043] Those skilled in the art can control the switching of the energized state by using an insulating rod inserted through the circular hole of the hook 310.

[0044] In a preferred embodiment of the present invention, the ice-melting mechanism 210 includes a bracket 211, a contact insulator 212, and a current-carrying stationary contact 213. The bracket 211 is cantilevered at the bottom of the vertical switch base 10. One end of the contact insulator 212 is connected to the bracket 211. The current-carrying stationary contact 213 is inclinedly disposed at the other end of the contact insulator 212, and a current-carrying groove 2131 for the hook ring 310 to be engaged is provided at the high end of the current-carrying stationary contact 213.

[0045] It is worth noting that the de-icing mechanism 210 includes a bracket 211, a contact insulator 212, and a current-carrying stationary contact 213. The bracket 211 is used to install the contact insulator 212 and the current-carrying stationary contact 213. The position of the current-carrying stationary contact 213 can be adjusted by adjusting the extension of the bracket 211, so that the current-carrying stationary contact 213 can more easily contact the hook 310. The contact insulator 212 is used for electrical insulation and mechanical fixation; it is a commonly used component in disconnect switches. The current-carrying stationary contact 213 serves as a connecting element in the de-icing state. The contact is typically made of copper sheet and is connected via the hook 310. When contacted, the hook 310 can undergo slight deformation, facilitating its connection with the current-carrying stationary contact 213 after pressing it against it. Since the swing trajectory of the hook 310 is arc-shaped, the current-carrying stationary contact 213 is inclinedly positioned on the contact insulator 212 for easy contact. Furthermore, to ensure a stable connection between the hook 310 and the current-carrying stationary contact 213, a current-carrying groove 2131 is provided at the high end of the current-carrying stationary contact 213 for the hook 310 to engage, allowing the protrusion of the hook 310 to engage within the current-carrying groove 2131. For details, please refer to the appendix. Figure 3 .

[0046] In a preferred embodiment of the present invention, the grounding mechanism 220 includes a grounding stationary contact 221, which includes a first end and a second end. The first end of the grounding stationary contact 221 is connected to the vertical switch base 10, and the second end of the grounding stationary contact 221 is bent. The second end of the grounding stationary contact 221 has a grounding groove 2211 for the hook ring 310 to engage. The current-passing groove 2131, the grounding groove 2211, and the movement path of the protrusion of the hook ring 310 all have a limiting intersection point.

[0047] It is worth noting that the grounding mechanism 220 includes a grounding stationary contact 221, which serves as a connecting element in the grounded state. The grounding stationary contact 221 includes a first end and a second end. The first end of the grounding stationary contact 221 is used to connect with the vertical switch base 10, and the second end of the grounding stationary contact 221 is used to connect with the hook 310 in the grounded state. Similar to the current-carrying stationary contact 213, the second end of the grounding stationary contact 221 is bent to form an inclined shape, so that the grounding stationary contact 221 can connect with the hook 310. When the ring 310 contacts, the movement paths of the flow groove 2131, the grounding groove 2211, and the protrusion of the hook ring 310 all have a limiting intersection point. This means that after swinging, the protrusion of the hook ring 310 can be engaged in the flow groove 2131 and the grounding groove 2211. Furthermore, the second end of the grounding stationary contact 221 also has a grounding groove 2211 for the hook ring 310 to engage, so that the protrusion of the hook ring 310 can be engaged in the grounding groove 2211. Please refer to the appendix for details. Figure 4 .

[0048] In a preferred embodiment of the present invention, the flow-through groove 2131 and the grounding groove 2211 are located at the same height. It should be noted that when the hook 310 is positioned between the flow-through groove 2131 and the grounding groove 2211 at the same height, it swings until the distances between the flow-through groove 2131 and the grounding groove 2211 are equal, thus maintaining sufficient switching space and equal switching efficiency.

[0049] Furthermore, the connecting mechanism 230 includes a knife arm insulator 231 and a rotating support 232. The knife arm insulator 231 is cantilevered on the top of the vertical switch base 10. The rotating support 232 is connected to the knife arm insulator 231. The rotating support 232 has a connecting hole. The tops of the two contact knife arms 320 are rotatably connected to the rotating support 232 through the connecting hole via pins.

[0050] It should be noted that the connecting mechanism 230 includes a knife arm insulator 231 and a rotating support 232. The knife arm insulator 231 serves as electrical insulation and mechanical fixation for one end of the contact knife arm 320. Its cantilever is set on the top of the vertical switch base 10 for the rotating support 232 to be installed and fixed. The rotating support 232 is used to rotatably install the contact knife arm 320 as a hinge support for the contact knife arm 320. Thus, the tops of the two contact knife arms 320 are rotatably connected to the rotating support 232 through the connecting hole via pins. Those skilled in the art can drive the hook ring 310 by manipulating the insulating rod to switch the contact knife arm 320 between the first node position and the second node position.

[0051] Furthermore, the connecting mechanism 230 also includes a terminal block 233, which is connected between the blade arm insulator 231 and the rotating support 232. It should be understood that the terminal block 233 is used to connect wires and is a commonly used component in disconnecting switches; therefore, it will not be described in detail here. The terminal block 233 extends vertically and connects between the blade arm insulator 231 and the rotating support 232.

[0052] Furthermore, both the flow-through groove 2131 and the grounding groove 2211 are rectangular, and they are coaxially aligned with the hook ring 310. It is worth noting that, since the hook ring 310 has a certain thickness, to ensure a more stable engagement between the hook ring 310 and the groove, the flow-through groove 2131 and the grounding groove 2211 are rectangular. The coaxial alignment of the flow-through groove 2131, the grounding groove 2211, and the hook ring 310 allows the hook ring 310 to be centrally engaged within the flow-through groove 2131 and the grounding groove 2211, preventing misalignment and ensuring proper engagement.

[0053] Furthermore, the width of the flow-through groove 2131 and the grounding groove 2211 is 30cm to 50cm. It can be understood that the width of the flow-through groove 2131 and the grounding groove 2211 can be determined according to the thickness of the hook 310, so that the hook 310 can fall into the groove. Preferably, the width can be set to 30cm to 50cm.

[0054] The present invention also provides a power transmission tower, including a tower body 40 and a de-icing grounding disconnect switch as described above. The vertical switch base 10 of the de-icing grounding disconnect switch is fixedly connected to the tower body 40. It is worth noting that the vertical switch base 10 is used to fix the de-icing grounding disconnect switch to the side wall of the tower body 40, thereby serving as a switch for switching between grounding and de-icing states. Please refer to the appendix for details. Figure 5 .

[0055] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A de-icing grounding disconnect switch, characterized in that, The device includes a vertical switch base, a switch body, and a power-on state switching mechanism. The switch body is connected to one side of the vertical switch base, and the power-on state switching mechanism is rotatably connected to the switch body. The switch body includes an ice-melting mechanism, a grounding mechanism, and a connecting mechanism arranged sequentially from bottom to top along the height direction of the vertical switch base; wherein, the ice-melting mechanism is cantilevered at the bottom of the vertical switch base, the grounding mechanism is cantilevered on the switch base and close to the ice-melting mechanism, and the connecting mechanism includes a fixed end and a connecting end arranged opposite to each other, the fixed end is fixedly connected to the top of the vertical switch base, and the connecting end is cantilevered from the fixed end in a direction away from the vertical switch base; The power-on state switching mechanism is located between the connecting mechanism and the grounding mechanism. The top end of the power-on state switching mechanism is hinged to the connecting end. The power-on state switching mechanism has a first node position and a second node position. When the power-on state switching mechanism is in the first node position, the bottom end of the power-on state switching mechanism is connected to the grounding mechanism, and the disconnecting switch is in the grounding state; when the power-on state switching mechanism is in the second node position, the bottom end of the power-on state switching mechanism is connected to the de-icing mechanism, and the disconnecting switch is in the de-icing state.

2. The de-icing grounding disconnect switch according to claim 1, characterized in that, The power-on state switching mechanism includes a hook and two contact arms oppositely disposed on both sides of the connecting mechanism. The connecting end of the connecting mechanism has a connecting hole. The tops of the two blade arms are rotatably connected to the connecting end of the connecting mechanism via pins passing through the connecting holes. The hook is fixed between the two blade arms, and the bottom of the hook protrudes downwards.

3. The de-icing grounding disconnect switch according to claim 2, characterized in that, The ice-melting mechanism includes a bracket, a contact insulator, and a current-carrying stationary contact. The bracket is cantilevered at the bottom of the vertical switch base. One end of the contact insulator is connected to the bracket. The current-carrying stationary contact is inclined at the other end of the contact insulator, and a current-carrying groove is provided at the high end of the current-carrying stationary contact for the hook to engage.

4. The de-icing grounding disconnect switch according to claim 3, characterized in that, The grounding mechanism includes a grounding stationary contact, which has a first end and a second end. The first end of the grounding stationary contact is connected to the vertical switch base. The second end of the grounding stationary contact is bent and has a grounding groove for the hook to engage. The current-carrying groove, the grounding groove, and the movement path of the protrusion of the hook all have a limiting intersection point.

5. The de-icing grounding disconnect switch according to claim 4, characterized in that, The flow groove and the grounding groove are located at the same height.

6. The de-icing grounding disconnect switch according to claim 2, characterized in that, The connecting mechanism includes a knife arm insulator and a rotating support. The knife arm insulator is cantilevered on the top of the vertical switch base. The rotating support is connected to the knife arm insulator and has a connecting hole. The tops of the two knife arms are rotatably connected to the rotating support through the connecting hole by a pin.

7. The de-icing grounding disconnect switch according to claim 6, characterized in that, The connection mechanism also includes a terminal block, which is connected between the knife arm insulator and the rotating support.

8. The de-icing grounding disconnect switch according to claim 4, characterized in that, Both the flow-through groove and the grounding groove are rectangular, and the flow-through groove, the grounding groove, and the hook are arranged coaxially.

9. The de-icing grounding disconnect switch according to claim 8, characterized in that, The width of the flow groove and the grounding groove is 30cm to 50cm.

10. A power transmission tower, comprising a tower body, characterized in that, It also includes the de-icing grounding disconnect switch as described in any one of claims 1-9, wherein the vertical switch base of the de-icing grounding disconnect switch is fixedly connected to the tower body.

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