Self-adjusting grounding switch tool

Abstract

The invention discloses a self-adjusting grounding knife-switch tool which comprises a grounding assembly, the grounding assembly comprises a base, grounding columns and grounding switches are arranged on the base at equal intervals, a liquid storage cavity is additionally formed in the base, and a pressure supplying piece is slidably connected into the liquid storage cavity through a sliding rail; and the regulation and control assembly comprises a side plate fixedly connected with the side face of the base, a sliding groove is formed in the side plate, a pressed part is slidably connected into the sliding groove, and hydraulic oil circulates in the sliding groove and the liquid storage cavity. Through linkage of the components and utilization of liquid fluidity, stable clamping of the grounding knife switch in a specific state and improvement of use effects of other internal components are realized, and grounding safety is indirectly improved by stability.

Description

Technical Field

[0001] The invention relates to the field of grounding equipment, in particular to a self-adjusting grounding tool. Background Art

[0002] During the closing process of the grounding switch, closing the grounding switch with power on is a very dangerous operation. In actual operation, the accidental closing of the grounding switch due to damage to electrical components and accidental touching of operating components often occurs. However, in many cases, it is a problem of the components themselves that cannot be avoided even if the operating specifications are followed. Damage to electrical components can be solved by improving the stability of electrical connections and partitioning power distribution equipment. However, accidents caused by accidental touching or improper operation of control switches of hardware devices such as operating components, as well as wear of the components themselves, are usually solved by strengthening and protecting the workpiece. For these risk avoidance situations, other electrical components are often used or rigid equipment is added for prevention, and the potential dangers caused by hardware equipment problems cannot be directly intervened from multiple angles.

[0003] Therefore, a method is designed to directly avoid and reinforce the components related to the grounding operation through multiple angles and linkage effects, and minimize other hidden dangers of hardware equipment in the process. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the fact that in the above-mentioned prior art, there are frequent cases of incorrect engagement of grounding switches due to damage of electrical components and accidental contact of operating components during actual operation, and in many cases, there are problems with the components themselves that cannot be avoided even by operating specifications. Existing solutions are usually reflected in the strengthening and protection of the workpiece. To avoid these situations, other electrical components are often used, or rigid equipment is added for prevention. However, it is not possible to directly interfere with the potential dangers brought about by hardware equipment problems from multiple angles, and the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is to design a method that can directly avoid risks and reinforce components related to grounding operations through multiple angles and linkage effects, and minimize other hidden dangers of hardware equipment in the process.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a self-adjusting grounding tool, comprising a grounding assembly, comprising a base, on which grounding posts and grounding gates are arranged at equal intervals, and a liquid storage cavity is further provided on the base, and a pressure-applying member is slidably connected to the liquid storage cavity via a slide rail;

[0008] The regulating component comprises a side plate fixedly connected to the side of the base, a slide groove is provided on the side plate, a pressure-bearing part is slidably connected in the slide groove, and hydraulic oil flows inside the slide groove and inside the liquid storage cavity.

[0009] As a preferred solution of the self-adjusting floor cutter tooling of the present invention, a booster channel is arranged at one end of the liquid storage chamber, and the booster channel is connected to the inside of the chute through a liquid pipeline close to the side of the regulating component.

[0010] As a preferred solution of the self-adjusting floor cutter tooling of the present invention, the pressure-bearing part includes a sliding block slidably connected in the sliding groove, a micro oil inlet is fixedly provided on the side of the sliding block contacting the hydraulic oil, and an oil injection pipe is provided on the opposite side to be connected to the micro oil inlet, and a scattering nozzle is provided at one end of the opening of the oil injection pipe.

[0011] As a preferred solution of the self-adjusting floor knife tooling described in the present invention, wherein: the pressure-bearing part also includes a receiving sheet metal fixedly connected to the sliding block, the receiving sheet metal is provided with a leakage port, the receiving sheet metal is fixedly connected to an oil leakage pan at one end away from the scattering nozzle, and the oil leakage pan is fixedly connected to a connecting shaft at one end away from the scattering nozzle in the same direction.

[0012] As a preferred solution of the self-adjusting ground cutter tooling of the present invention, the connecting shafts are rotationally connected by a connecting rod, and the connecting rod is transmission-connected to the ground cutter shaft, and the fixed sleeves of the grounding gates arranged equidistantly are arranged on the ground cutter shaft.

[0013] As a preferred solution of the self-adjusting grounding tooling of the present invention, wherein: the grounding switch is provided with a contact port at one end and a telescopic positioning rod at the other end;

[0014] The opening of the contact port can be embedded with the end of the grounding column;

[0015] An inclined surface and a ball bearing end are arranged on the telescopic positioning rod.

[0016] As a preferred solution of the self-adjusting floor cutter tooling of the present invention, wherein: an inclined sliding surface is provided on one side of the pressure-feeding member;

[0017] The base is provided with a tilting sheet metal, the inclined surface can contact and slide relatively with the end of the tilting sheet metal, and a positioning hole is overlapped on the tilting sheet metal and the base;

[0018] The ball end can contact and slide relatively with the inclined sliding surface.

[0019] As a preferred solution of the self-adjusting floor knife tooling of the present invention, wherein: a slide rail sealing plate is provided on the side plate, the slide rail sealing plate is placed on the opening side of the slide groove, and the closed space formed by the slider, the slide rail sealing plate and the slide groove can be filled with the hydraulic oil.

[0020] As a preferred solution of the self-adjusting floor cutter tooling of the present invention, wherein: an isolation plate is provided on the base, and the isolation plate surrounds the side plate;

[0021] The base is provided with an oil return port, and the oil return port is placed inside the isolation plate.

[0022] As a preferred solution of the self-adjusting floor cutter tooling of the present invention, wherein: the slide groove includes a longitudinal slide groove and a bending slide groove, and the connecting shaft in the longitudinal slide groove is further fixedly connected with a switch handle;

[0023] When the grounding gate is closed, the grounding gate and the grounding gate form an angle of 45° with each other.

[0024] The beneficial effects of the present invention are as follows: through the linkage of the components and the use of liquid fluidity, the specific state of the grounding knife switch is stably supported and the use effect of other internal components is improved, and the stability indirectly improves the grounding safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0026] Figure 1 A schematic diagram of the structure of a self-adjusting grounding tooling in a grounded state according to an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of a self-adjusting floor cutter tooling base and related frame components according to an embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of a pressure-bearing member of a self-adjusting floor cutter tooling according to an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of a pressure-bearing member of a self-adjusting floor cutter tooling in a slide groove according to an embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of a self-adjusting grounding tooling in a non-grounding state according to an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the related structures of a self-adjusting floor cutter tooling control assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] Reference Figures 1 to 6 The present embodiment provides a self-adjusting grounding tool, including a grounding assembly 100, which is a related component responsible for completing the entire grounding process, including a base 101, which is responsible for carrying most of the related components. Grounding posts 101a and grounding gates 101b are arranged equidistantly on the base 101, and the corresponding ends of the gates and posts are in contact to complete the grounding. The stability and safety of the grounding are achieved by the linkage of other components of the present invention. A liquid storage chamber 101c is further provided on the base 101. The liquid storage chamber 101c is a chamber for storing liquid with an opening and a sliding area, which can form a completely closed space with other components. A pressure member 102 is slidably connected to the liquid storage chamber 101c through a slide rail 101d. The pressure member 102 is in the liquid storage chamber 101c, and squeezes the liquid in the liquid storage chamber 101c by displacement to achieve the technical effect.

[0038] Furthermore, the regulating component 200, the regulating component 200 is other transmission components used to ensure the stability and safety of the entire grounding operation, including a side plate 201 fixedly connected to the side of the base 101, and a slide groove 201a is opened on the side plate 201. The slide groove 201a can be understood as two channels. A pressure-bearing part 202 is slidably connected in the slide groove 201a. The pressure-bearing part 202 slides in the channel. Hydraulic oil W flows inside the slide groove 201a and inside the liquid storage chamber 101c. In the default state, the hydraulic oil W is all stagnant in the liquid storage chamber 101c. After the pressure part 102 moves, the hydraulic oil W is squeezed and flows toward the inside of the slide groove 201a, thereby further driving the pressure-bearing part 202 to move.

[0039] Example 2

[0040] Reference Figures 1 to 5 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that a boosting channel 101c-1 is arranged at one end of the liquid storage chamber 101c. The boosting channel 101c-1 is composed of a plurality of small channels. For the large-cavity liquid storage chamber 101c, it is a component for enhancing the hydraulic effect. The boosting channel 101c-1 is connected to the inside of the chute 201a through the liquid pipe 101c-2 on the side close to the regulating component 200. The liquid pipe 101c-2 is further pressurized and releases the liquid. The liquid pushed by the high pressure will gradually flow into the inside of the chute 201a and lift the pressure-bearing member 202.

[0041] Furthermore, the pressure-bearing part 202 includes a slider 202a slidably connected in the slide groove 201a, and the slider 202a is attached to the inner wall of the slide groove 201a. A micro oil inlet 202a-1 is fixedly provided on the side of the slider 202a contacting the hydraulic oil W, and an oil injection pipe 202b is provided on the opposite side. The establishment of the micro oil inlet 202a-1 causes the pressure-bearing part 202 to exert pressure on the liquid surface of the hydraulic oil W in turn, and also causes a small amount of hydraulic oil W to enter the oil inlet 202a-1, while the oil injection pipe 202b allows this part of the hydraulic oil W to flow upward. A scattering nozzle 202b-1 is provided at the open end of the oil injection pipe 202b. After multiple pressurizations, the hydraulic oil W reaches the scattering nozzle 202b-1 and is dispersed and sprayed out to form a liquid-gas mist.

[0042] Furthermore, the pressure-bearing part 202 also includes a receiving sheet metal 202c fixedly connected to the slider 202a. The main function of the receiving sheet metal 202c is to further adhere to the inner wall of the slide groove 201a to ensure that the sliding speed is stable and not too fast. A leakage port 202c-1 is provided on the receiving sheet metal 202c. The leakage port 202c-1 can allow the sprayed liquid mist to not only affect the receiving sheet metal 202c itself, but also further affect the components in front. The receiving sheet metal 202c is fixedly connected to an oil leakage pan 202d at one end away from the scattering nozzle 202b-1, and the oil leakage pan 202d is fixedly connected to a connecting shaft 202e at one end away from the scattering nozzle 202b-1 in the same direction. In this way, a small amount of hydraulic oil W sprayed from the scattering nozzle 202b-1 can completely cover the entire pressure-bearing part 202, thereby preventing the components from being worn or having excessive friction.

[0043] Furthermore, the connecting shafts 202e are rotatably connected via a connecting rod 203. Since there are two slide grooves 201a, multiple connecting rods 203 are provided. In addition to connecting the connecting shaft 202e, the connecting rod 203 is also transmission-connected to a grounding knife shaft 103 at the end. The grounding gates 101b are fixedly sleeved and arranged equidistantly on the grounding knife shaft 103. Under the action of the connecting rod, the connecting shaft 202e follows the pressure-bearing member 202 to move along the direction of the slide groove 201a, causing the grounding gate 101b to rotate itself.

[0044] Example 3

[0045] Reference Figures 1 to 6 , which is the third embodiment of the present invention, and provides a self-adjusting grounding tool. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: a contact port 101b-1 is provided at one end of the grounding gate 101b, and a telescopic positioning rod 101b-2 is provided at the other end. The contact port 101b-1 is a grounding contact point, and when it touches the grounding column, grounding occurs. The telescopic positioning rod 101b-2 is used to drive other components to produce effects, and it is also a conventional telescopic sleeve structure.

[0046] In detail, the opening of the contact port 101b-1 can be embedded with the end of the grounding column 101a to form a grounding state;

[0047] In detail, the telescopic positioning rod 101b-2 is provided with an inclined surface M and a ball end S. The inclined surface S ensures that the telescopic positioning rod 101b-2 can produce a telescopic effect when contacting other components to avoid displacement obstacles. The ball end S is also used to reduce the friction generated by contacting other components.

[0048] In detail, one side of the pressure piece 102 is provided with an inclined sliding surface 102a, which faces the telescopic positioning rod 101b-2; the base 101 is provided with a tilting sheet metal 104, and the positioning hole 104a on it allows the telescopic positioning rod 101b-2 to be inserted when the grounding gate 101b is in a non-grounded state, so as to avoid the occurrence of a wrong slot, resulting in touching the switch wrench and causing an accident. If you want to operate the switch wrench, you must first push back the telescopic positioning rod 101b-2 outside the device to make it leave the limit of the positioning hole 104a;

[0049] In detail, the concave part of the inclined surface of the tilting sheet metal 104 faces the position of the telescopic positioning rod 101b-2, that is, the inclined surface M is able to contact and slide relatively with the end of the tilting sheet metal 104. When the telescopic positioning rod 101b-2 rotates following the grounding gate 101b, it touches the top of the tilting sheet metal 104, so that the end is squeezed and retracted, and the ball end S can ensure that it rotates normally in the concave part of the tilting sheet metal 104. At the same time, when the inclined sliding surface 102a is in the grounded state, the grounding gate 101b needs to rotate 45° to dock with the grounding column 101a. Therefore, after the rotation, the telescopic positioning rod 101b-2 releases the restriction of the tilting sheet metal 104 on it, extends its full length, and pushes the inclined sliding surface 102a, driving the pressure piece 102 to move.

[0050] Furthermore, a slide rail sealing plate 201b is provided on the side plate 201, and the slide rail sealing plate 201b is placed on the opening side of the slide groove 201a. The closed space formed by the slider 202a, the slide rail sealing plate 201b and the slide groove 201a can be filled with hydraulic oil W. At this time, the slide rail sealing plate 201b can ensure that no matter how the pressure-bearing part 202 moves, there will be no oil leakage.

[0051] Example 4

[0052] Reference Figures 1 to 6 , which is the fourth embodiment of the present invention, and provides a self-adjusting floor cutter tooling. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: an isolation plate 101e is provided on the base 101, and the isolation plate 101e surrounds the side plate 201 to prevent a very small amount of oil droplets that may leak from the oil leakage plate 202d due to excessive negative pressure from affecting other components;

[0053] Furthermore, the base 101 is provided with an oil return port 101f, which is placed inside the isolation plate 101e. This part is for reusing the sprayed oil droplets so that they flow back to the oil return port 101f with an inclined surface under the inertia of gravity and return to the liquid storage chamber 101c.

[0054] Furthermore, the slide groove 201a includes a longitudinal slide groove 201a-1 and a bending slide groove 201a-2, and the connecting shaft 202e in the longitudinal slide groove 201a-1 is fixedly connected to a switch handle.

[0055] When grounding: push the telescopic positioning rod 101b-2 to leave the positioning hole 104a, and pull the switch handle at the same time. Before the telescopic positioning rod 101b-2 leaves the tilting sheet metal 104, the switch handle is rotated by manpower. Then, under the influence of the rotation of the grounding gate 101b, the liquid in the liquid storage chamber 101c is squeezed into the slide groove 201a by the pressure piece 102 and the telescopic positioning rod 101b-2. During the whole process, due to the high hydraulic pressure but slow filling speed, a high-pressure liquid column is generated to play the role of auxiliary support force to protect the parts that have just been positioned. Until the hydraulic oil W is filled to the top, positioning and protection are completed.

[0056] When the grounding is released: press the switch handle. Due to gravity, the force applied to press the switch downward is definitely greater, so the staff is facing the torque friction caused by the liquid surface pressure and the rotation. Although the resistance is relatively large, it can be ignored. At this time, the pressure block 202 applies a thrust downward to the hydraulic oil W. As mentioned above, with the assistance of relevant components, the hydraulic oil W can be sprayed and lubricated on the entire pressure block 202, and the amount of oil consumed is very small, which can avoid excessive friction and damage to the components during use. The consumed oil can also be reused through the oil return port 101f until the hydraulic oil W is pushed back into the liquid storage chamber 101c again, and with the assistance of other components, a stable positioning limit is completed to avoid accidental touch.

[0057] When the grounding gate 101b is closed, they are at a 45° angle to each other, which is different from the 90° angle in the prior art. This reduces the torque friction required to turn the handle and helps optimize equipment layout, reduce area, and reduce mechanical fatigue. The hydraulic oil W can be made of insulating silicone oil to minimize the impact on electrical equipment.

[0058] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0059] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0060] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A self-adjusting ground cutter tool, characterized in that: include, A grounding assembly (100) comprises a base (101), on which grounding posts (101a) and grounding gates (101b) are arranged at equal intervals, and a liquid storage chamber (101c) is further provided on the base (101), wherein a pressure-applying member (102) is slidably connected to the liquid storage chamber (101c) via a slide rail (101d); The regulating component (200) comprises a side plate (201) fixedly connected to the side of the base (101), a slide groove (201a) is provided on the side plate (201), a pressure-bearing member (202) is slidably connected in the slide groove (201a), and hydraulic oil (W) flows in the interior of the slide groove (201a) and the interior of the liquid storage chamber (101c).

2. The self-adjusting floor cutter tooling according to claim 1, characterized in that: A boosting channel (101c-1) is disposed at one end of the liquid storage chamber (101c), and the boosting channel (101c-1) is connected to the interior of the slide groove (201a) via a liquid delivery pipe (101c-2) on a side close to the regulating component (200).

3. The self-adjusting floor cutter tooling according to claim 2, characterized in that: The pressure-bearing member (202) comprises a sliding block (202a) slidably connected in the sliding groove (201a); a micro oil inlet (202a-1) is fixedly provided on one side of the sliding block (202a) contacting the hydraulic oil (W); an oil injection pipe (202b) is provided on the opposite side and communicates with the micro oil inlet (202a-1); a scattering nozzle (202b-1) is provided at one open end of the oil injection pipe (202b).

4. The self-adjusting floor cutter tooling according to claim 3, characterized in that: The pressure-bearing member (202) further comprises a receiving sheet metal (202c) fixedly connected to the sliding block (202a), a leakage port (202c-1) being provided on the receiving sheet metal (202c), an oil leakage plate (202d) being fixedly connected to one end of the receiving sheet metal (202c) away from the scattering nozzle (202b-1), and a connecting shaft (202e) being fixedly connected to one end of the oil leakage plate (202d) away from the scattering nozzle (202b-1) in the same direction.

5. The self-adjusting floor cutter tooling according to claim 4, characterized in that: The connecting shafts (202e) are rotatably connected to each other via a connecting rod (203), and the connecting rod (203) is transmission-connected to a grounding knife shaft (103), and the grounding gates (101b) are fixedly sleeved and arranged equidistantly on the grounding knife shaft (103).

6. The self-adjusting floor cutter tool according to claim 5, characterized in that: The grounding gate (101b) is provided with a contact port (101b-1) at one end and a telescopic positioning rod (101b-2) at the other end; The opening of the contact port (101b-1) is capable of embedding the end of the grounding column (101a); The telescopic positioning rod (101b-2) is provided with an inclined surface (M) and a ball end (S).

7. The self-adjusting floor cutter tooling according to claim 6, characterized in that: One side of the pressure-feeding member (102) is provided with an inclined sliding surface (102a); The base (101) is provided with a tilting sheet metal (104), the inclined surface (M) is capable of contacting and sliding relatively with the end of the tilting sheet metal (104), and a positioning hole (104a) is provided on the tilting sheet metal (104) and overlapped with the base (101); The ball end (S) is capable of contacting and sliding relatively with the inclined sliding surface (102a).

8. The self-adjusting floor cutter tool according to claim 7, characterized in that: The side plate (201) is provided with a slide rail sealing plate (201b), and the slide rail sealing plate (201b) is placed on the opening side of the slide groove (201a). The hydraulic oil (W) can be filled in the closed space formed by the slider (202a), the slide rail sealing plate (201b) and the slide groove (201a).

9. The self-adjusting floor cutter tooling according to claim 8, characterized in that: An isolation plate (101e) is provided on the base (101), and the isolation plate (101e) surrounds the side plate (201); The base (101) is provided with an oil return port (101f), and the oil return port (101f) is placed inside the isolation plate (101e).

10. The self-adjusting floor cutter tooling according to claim 9, characterized in that: The slide groove (201a) comprises a longitudinal slide groove (201a-1) and a bent slide groove (201a-2), and the connecting shaft (202e) in the longitudinal slide groove (201a-1) is further fixedly connected to a switch handle; When the grounding gate (101b) and the grounding gate (101b) are closed, they form an angle of 45° with each other.

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