Screwing assembly and grounding device

Abstract

The invention provides a screwing assembly and a grounding device, and the screwing assembly comprises a clamping structure which comprises a first base, a first clamping piece, a second clamping piece and a driving part, the first clamping piece and the second clamping piece are arranged on the first base, the first clamping piece is movably arranged in the transverse direction relative to the second clamping piece, and the driving part is arranged on the first base; the first clamping piece is provided with a clamping position and a releasing position, when the first clamping piece is located at the clamping position, the first clamping piece and the second clamping piece clamp the insulating rod, and when the first clamping piece is located at the releasing position, the first clamping piece and the second clamping piece release the insulating rod. The driving part is connected with the first clamping piece and can drive the first clamping piece to move so that the first clamping piece can be switched between the clamping position and the releasing position. And the rotating structure is connected with the clamping structure, and the rotating structure can drive the clamping structure to rotate. According to the technical scheme, the problem that operation of workers is difficult in the prior art can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a screwing assembly and a grounding device. Background Art

[0002] When the high-voltage electrical equipment of the substation is shut down for maintenance, grounding wires should be installed or grounding switches should be closed on all sides that may supply power to the high-voltage maintenance equipment. At present, the drainage wires (that is, the grounding end of the electrical equipment) of 500kV voltage level electrical equipment are generally about 9 meters above the ground. The drainage wires of other higher voltage AC and DC electrical equipment are much higher than 9 meters, making it very difficult to install and remove the grounding wires.

[0003] In this field, a grounding assembly is usually used for operation. The grounding assembly usually includes a grounding wire, an insulating rod, a stopper and a connecting hook. The grounding wire is connected to the connecting hook. When connecting the grounding assembly to the grounding terminal of the electrical equipment, the staff first hangs the connecting hook on the grounding terminal, and then needs to manually screw the bottom end of the insulating rod to drive the stopper to move, so that the stopper and the connecting hook cooperate to stably clamp the grounding terminal. In actual operation, the staff needs to perform multiple screwing operations, which often results in the grounding assembly and the grounding terminal being loosely connected, which easily causes safety hazards. Summary of the invention

[0004] The main purpose of the present invention is to provide a screwing assembly and a grounding device to solve the problem that the operation is difficult for workers in the related technology.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a screwing assembly is provided for clamping and screwing an insulating rod, the screwing assembly comprising: a clamping structure, comprising a first base, a first clamping member, a second clamping member and a driving portion, the first clamping member and the second clamping member are both arranged on the first base, the first clamping member is movably arranged in a lateral direction relative to the second clamping member, the first clamping member has a clamping position close to the second clamping member and a release position away from the second clamping member, when the first clamping member is at the clamping position, the first clamping member and the second clamping member clamp the insulating rod, when the first clamping member is at the release position, the first clamping member and the second clamping member release the insulating rod, the driving portion is connected to the first clamping member and can drive the first clamping member to move so that the first clamping member is switched between the clamping position and the release position; a rotating structure, connected to the clamping structure, the rotating structure can drive the clamping structure to rotate to screw the insulating rod.

[0006] Furthermore, the screwing assembly also includes a transmission structure, the first clamping member includes a first clamping arm, the first clamping arm is used to clamp the insulating rod, the transmission structure is connected between the driving part and the first clamping arm, and the driving part drives the first clamping arm to move through the transmission structure so that the first clamping member switches between the clamping position and the release position.

[0007] Furthermore, the transmission structure includes a first rack and a gear that cooperate with each other, the first rack extends in the lateral direction and is connected to the first clamping arm, the driving part includes a first rotating motor, the gear is arranged on the output shaft of the first rotating motor, the first rotating motor drives the gear to rotate and drives the first rack to move in the lateral direction through the engagement between the gear and the first rack.

[0008] Furthermore, the transmission structure also includes a second rack that cooperates with the gear, the second clamping member includes a second clamping arm, the second clamping arm is arranged opposite to the first clamping arm and is used to clamp the insulating rod, the second rack extends in the transverse direction and is connected to the second clamping arm, the gear is arranged between the second rack and the first rack, and when the gear rotates, it drives the first rack and the second rack to move in opposite directions in the transverse direction.

[0009] Furthermore, the screwing assembly also includes a mounting seat and a guide rod extending in a transverse direction, the first clamping arm is arranged on the mounting seat, a sliding sleeve is arranged on the mounting seat, and the sliding sleeve is sleeved on the guide rod and cooperates with the guide rod for guidance.

[0010] Furthermore, the first clamping arm includes a connecting rod and a clamping claw, the clamping claw includes a main body and a first limit arm and a second limit arm arranged at both ends of the main body, the connecting rod extends in a vertical direction and is connected between the mounting seat and the main body, and when the first clamping member is in the clamping position, the first limit arm and the second limit arm are located on both sides of the insulating rod and cooperate with the outer surface of the insulating rod.

[0011] Furthermore, the clamp also includes a first limit block, which is arranged on a first limit arm. When the first clamp is located in the clamping position, the first limit block abuts against the outer surface of the insulating rod; and / or, the clamp also includes a second limit block, which is arranged on a second limit arm. When the first clamp is located in the clamping position, the second limit block abuts against the outer surface of the insulating rod.

[0012] Furthermore, the rotating structure includes a second base and a second rotating motor arranged on the second base, and the clamping structure is connected to the output shaft of the second rotating motor.

[0013] Furthermore, the screwing assembly also includes a sleeve, a stop block and a stop groove, the sleeve is arranged on the first base, the output shaft of the second rotating motor is inserted in the sleeve, the stop block and the stop groove are matched to stop rotation, the stop block is arranged on the output shaft of the second rotating motor, and the stop groove is arranged on the inner wall of the sleeve.

[0014] According to another aspect of the present invention, a grounding device is provided, which includes a grounding component and a screwing component. The screwing component is the above-mentioned screwing component. The grounding component includes a grounding wire, an insulating rod, a limiter and a connecting hook. One end of the grounding wire is connected to the connecting hook. The limiter and the connecting hook are arranged at the upper end of the insulating rod. The limiter is movably arranged. The limiter can cooperate with the connecting hook to clamp the grounding terminal of the electrical equipment. The screwing component can clamp and screw the lower end of the insulating rod to drive the limiter to move, so that the limiter clamps or releases the grounding terminal.

[0015] The technical solution of the present invention is applied, the clamping structure is used to clamp the insulating rod, and the rotating structure is used to screw the insulating rod. Specifically, the clamping structure includes a first base, a first clamping member, a second clamping member and a driving part. The first clamping member and the second clamping member are both arranged on the first base. The first clamping member is movably arranged in a transverse direction relative to the second clamping member. The first clamping member has a clamping position close to the second clamping member and a release position away from the second clamping member. When the insulating rod needs to be clamped, the first clamping member is moved toward the second clamping member and the first clamping member is switched to the clamping position to clamp the insulating rod. When the insulating rod needs to be released, the first clamping member is released. When the first clamping member is moved away from the second clamping member and the first clamping member is switched to the release position to release the insulating rod, the driving part is connected to the first clamping member and can drive the first clamping member to move so that the first clamping member switches between the clamping position and the release position, thereby facilitating the staff to clamp the insulating rod; the rotating structure is connected to the clamping structure, and when the clamping structure completes the clamping of the insulating rod, the rotating structure is operated to drive the clamping structure to rotate, and then drive the insulating rod to rotate, so as to complete the connection between the grounding wire and the grounding terminal; if the grounding wire needs to be disconnected from the grounding terminal, the above process can be reversed. Such a setting eliminates the need for the staff to manually hold and rotate the insulating rod, greatly reduces the difficulty of operation for the staff, and also improves the stability of the connection between the grounding wire and the grounding terminal, reducing safety risks. Therefore, the technical solution of the present application can effectively solve the problem of difficult operation for staff in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a screwing assembly according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A three-dimensional structural schematic diagram of a partial structure of a screwing assembly;

[0019] Figure 3 Shows Figure 1 A three-dimensional structural diagram of a driving part and a transmission structure of a screwing assembly;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the three-dimensional structure of the rotating structure of the screwing assembly;

[0021] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of a sleeve of a screwing assembly;

[0022] Figure 6 A schematic three-dimensional structure diagram of a grounding assembly according to an embodiment of a grounding device of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 1. Insulating rod; 2. Limiting piece; 3. Connecting hook; 4. Grounding wire;

[0025] 10. Clamping structure; 11. First base; 12. First clamping member; 121. First clamping arm; 1211. Connecting rod; 1212. Clamping claw; 1213. Main body; 1214. First limiting arm; 1215. Second limiting arm; 1216. First limiting block; 1217. Second limiting block; 122. Transmission structure; 123. First rack; 124. Gear; 13. Second clamping member; 131. Second clamping arm; 132. Second rack; 14. Driving unit; 141. First rotating motor;

[0026] 20. Rotating structure; 21. Second base; 22. Second rotating motor;

[0027] 31. Mounting seat; 32. Guide rod; 33. Sliding sleeve; 34. Sleeve; 35. Anti-rotation block; 36. Anti-rotation groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] like Figures 1 to 5 As shown, the present application provides a screwing assembly for clamping and screwing an insulating rod 1. The embodiment of the screwing assembly of the present application includes: a clamping structure 10 and a rotating structure 20; the clamping structure 10 includes a first base 11, a first clamping member 12, a second clamping member 13 and a driving portion 14, the first clamping member 12 and the second clamping member 13 are both arranged on the first base 11, the first clamping member 12 is movably arranged in a transverse direction relative to the second clamping member 13, and the first clamping member 12 has a clamping position close to the second clamping member 13 and a clamping position away from the second clamping member 13. 3, when the first clamping member 12 is in the clamping position, the first clamping member 12 and the second clamping member 13 clamp the insulating rod 1, and when the first clamping member 12 is in the releasing position, the first clamping member 12 and the second clamping member 13 release the insulating rod 1, the driving part 14 is connected to the first clamping member 12 and can drive the first clamping member 12 to move so that the first clamping member 12 is switched between the clamping position and the releasing position; the rotating structure 20 is connected to the clamping structure 10, and the rotating structure 20 can drive the clamping structure 10 to rotate to screw the insulating rod 1.

[0032] The technical solution of this embodiment is applied, the clamping structure 10 is used to clamp the insulating rod 1, and the rotating structure 20 is used to screw the insulating rod 1. Specifically, the clamping structure 10 includes a first base 11, a first clamping member 12, a second clamping member 13 and a driving portion 14. The first clamping member 12 and the second clamping member 13 are both arranged on the first base 11. The first clamping member 12 is movably arranged in a transverse direction relative to the second clamping member 13. The first clamping member 12 has a clamping position close to the second clamping member 13 and a release position away from the second clamping member 13. When the insulating rod 1 needs to be clamped, the first clamping member 12 is moved toward the second clamping member 13 and the first clamping member 12 is switched to the clamping position to clamp the insulating rod 1. When it is needed When releasing the insulating rod 1, the first clamping member 12 is moved away from the second clamping member 13 and the first clamping member 12 is switched to the release position to release the insulating rod 1. The driving part 14 is connected to the first clamping member 12 and can drive the first clamping member 12 to move so that the first clamping member 12 switches between the clamping position and the release position, thereby facilitating the staff to clamp the insulating rod 1; the rotating structure 20 is connected to the clamping structure 10. After the clamping structure 10 completes the clamping of the insulating rod 1, the rotating structure 20 is operated to drive the clamping structure 10 to rotate, and then drive the insulating rod 1 to rotate to complete the connection between the grounding wire 4 and the grounding terminal; if the grounding wire 4 needs to be disconnected from the grounding terminal, the above process can be reversed. Such a setting eliminates the need for the staff to manually hold and rotate the insulating rod 1, greatly reduces the difficulty of operation for the staff, and also improves the stability of the connection between the grounding wire 4 and the grounding terminal, reducing safety risks. Therefore, the technical solution of this embodiment can effectively solve the problem of difficult operation for the staff in the related technology.

[0033] like Figures 1 to 3 As shown, the screwing assembly also includes a transmission structure 122, the first clamping member 12 includes a first clamping arm 121, the first clamping arm 121 is used to clamp the insulating rod 1, and the transmission structure 122 is connected between the driving part 14 and the first clamping arm 121. The driving part 14 drives the first clamping arm 121 to move through the transmission structure 122 so that the first clamping member 12 switches between the clamping position and the release position. Specifically, the setting of the transmission structure 122 can enable the driving part 14 to drive the first clamping arm 121 to move, so that the first clamping arm 121 moves to clamp the insulating rod 1 or release the insulating rod 1. It should be noted that the structure of the second clamping member 13 is similar to that of the first clamping member 12, and will not be repeated in this article. The transmission structure 122 has the advantage of simple structure.

[0034] like Figures 1 to 3As shown, the transmission structure 122 includes a first rack 123 and a gear 124 that cooperate with each other. The first rack 123 extends in the lateral direction and is connected to the first clamping arm 121. The driving part 14 includes a first rotating motor 141. The gear 124 is arranged on the output shaft of the first rotating motor 141. The first rotating motor 141 drives the gear 124 to rotate and drives the first rack 123 to move in the lateral direction through the engagement between the gear 124 and the first rack 123. Specifically, the gear 124 and the first rack 123 have the advantages of simple structure and easy processing. The cooperation of the gear 124, the first rack 123 and the first rotating motor 141 can realize the lateral movement of the first clamping arm 121, thereby realizing the position switching of the first clamping member 12.

[0035] like Figures 1 to 3 As shown, the second clamping member 13 includes a second clamping arm 131 and a second rack 132 matched with a gear 124. The second clamping arm 131 is arranged opposite to the first clamping arm 121 and is used to clamp the insulating rod 1. The second rack 132 extends in the transverse direction and is connected to the second clamping arm 131. The gear 124 is arranged between the second rack 132 and the first rack 123. When the gear 124 rotates, it drives the first rack 123 and the second rack 132 to move in the opposite direction in the transverse direction. Specifically, the first rack 123 and the second rack 132 are respectively located on both sides of the gear 124 and are both meshed with the gear 124. When the gear 124 rotates, it can drive the first rack 123 and the second rack 132 to move in the opposite direction, thereby driving the first clamping arm 121 and the second clamping arm 131 to move toward or away from each other. Compared with the solution in which only one clamping arm moves, this embodiment can realize the rapid clamping or rapid release of the insulating rod, and its layout is more reasonable.

[0036] like Figures 1 to 3 As shown, the screwing assembly further includes a mounting seat 31 and a guide rod 32 extending in the transverse direction, the first clamping arm 121 is arranged on the mounting seat 31, and a sliding sleeve 33 is arranged on the mounting seat 31, and the sliding sleeve 33 is sleeved on the guide rod 32 and cooperates with the guide rod 32. Specifically, the guiding cooperation between the sliding sleeve 33 and the guide rod 32 ensures that the first clamping arm 121 moves in a preset direction, thereby realizing the clamping function of the first clamping arm 121, and the first clamping arm 121 is not deviated during the movement.

[0037] like Figures 1 to 3As shown, the first clamping arm 121 includes a connecting rod 1211 and a clamping claw 1212, the clamping claw 1212 includes a main body 1213 and a first limiting arm 1214 and a second limiting arm 1215 arranged at both ends of the main body 1213, the connecting rod 1211 extends in the vertical direction and is connected between the mounting seat 31 and the main body 1213, when the first clamping member 12 is located in the clamping position, the first limiting arm 1214 and the second limiting arm 1215 are located on both sides of the insulating rod 1 and are abutted against the outer surface of the insulating rod 1. Specifically, the first limiting arm 1214 and the second limiting arm 1215 increase the contact area between the first clamping arm 121 and the insulating rod 1, thereby making the limiting of the insulating rod 1 by the first limiting arm 1214 more stable. It should be noted that "the first limiting arm 1214 and the second limiting arm 1215 are located on both sides of the insulating rod 1" is not limited to the two opposite sides. In this embodiment, the free ends of the first limiting arm 1214 and the second limiting arm 1215 both extend in the direction away from the gear 124.

[0038] like Figures 1 to 3 As shown, the clamping jaw 1212 further includes a first limit block 1216, which is arranged on the first limit arm 1214. When the first clamping member 12 is located at the clamping position, the first limit block 1216 abuts against the outer surface of the insulating rod 1; the clamping jaw 1212 further includes a second limit block 1217, which is arranged on the second limit arm 1215. When the first clamping member 12 is located at the clamping position, the second limit block 1217 abuts against the outer surface of the insulating rod 1. Specifically, when the first clamping member 12 is located at the clamping position, both the first limit block 1216 and the second limit block 1217 can abut against the outer surface of the insulating rod 1, and the first limit arm 1214 and the second limit arm 1215 also abut against the outer surface of the insulating rod 1, so that the abutting area of ​​the clamping jaw 1212 and the insulating rod 1 is increased, and the clamping effect of the clamping jaw 1212 is enhanced.

[0039] like Figures 1 to 3 As shown, the rotating structure 20 includes a second base 21 and a second rotating motor 22 disposed on the second base 21, and the clamping structure 10 is connected to the output shaft of the second rotating motor 22. Specifically, the second rotating motor 22 can drive the clamping structure 10 to rotate, thereby realizing the screwing of the insulating rod 1, and the second rotating motor 22 has the advantage of a simple structure.

[0040] like Figures 1 to 3As shown, the screwing assembly further includes a sleeve 34, a stop block 35 and a stop groove 36. The sleeve 34 is arranged on the first base 11. The output shaft of the second rotary motor 22 is inserted in the sleeve 34. The stop block 35 and the stop groove 36 are matched to stop rotation. The stop block 35 is arranged on the output shaft of the second rotary motor 22, and the stop groove 36 is arranged on the inner side wall of the sleeve 34. Specifically, the output shaft of the second rotary motor 22 is plug-fitted with the sleeve 34, so as to realize the stable connection between the second rotary motor 22 and the first base 11. In this embodiment, the output shaft of the second rotary motor 22 is interference-fitted with the sleeve 34, and the stop block 35 and the stop groove 36 are matched to stop rotation, so as to ensure that the rotation of the output shaft of the second rotary motor 22 can stably drive the sleeve 34 to rotate.

[0041] The present application also provides a grounding device, which includes a grounding component and a screwing component, wherein the screwing component is the above-mentioned screwing component. The above-mentioned screwing component can effectively solve the problem that the staff in the related art are difficult to operate, and the grounding device with the above-mentioned screwing component also has the above-mentioned advantages. Specifically, the grounding component includes a grounding wire 4, an insulating rod 1, a limiter 2 and a connecting hook 3, one end of the grounding wire 4 is connected to the connecting hook 3, the limiter 2 and the connecting hook 3 are arranged at the upper end of the insulating rod 1, the limiter 2 is movably arranged, the limiter 2 can cooperate with the connecting hook 3 to clamp the grounding terminal of the electrical equipment, and the screwing component can clamp and screw the lower end of the insulating rod 1 to drive the limiter 2 to move, so that the limiter 2 clamps or releases the grounding terminal. With such a configuration, the staff only needs to operate the screwing component to complete the electrical connection between the grounding wire 4 and the grounding terminal of the electrical equipment, which is convenient and quick.

[0042] Specifically, Figure 6 The connecting hook 3 is made of metal and has a hook-shaped structure. The connecting hook 3 is arranged at the upper end of the insulating rod 1. The grounding wire 4 is connected to the connecting hook 3. The limiting member 2 is also arranged at the upper end of the insulating rod 1 and is located within the range of the connecting hook 3. The connecting hook 3 is threadedly connected to the insulating rod 1. When the insulating rod 1 is rotated, the insulating rod 1 will move relative to the connecting hook 3, thereby driving the limiting member 2 to move, so that the limiting member 2 can cooperate with the inner surface of the connecting hook 3 to clamp the grounding terminal of the electrical equipment.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screwing assembly for clamping and screwing an insulating rod (1), characterized in that: The screwing assembly comprises: The clamping structure (10) comprises a first base (11), a first clamping member (12), a second clamping member (13) and a driving part (14), wherein the first clamping member (12) and the second clamping member (13) are both arranged on the first base (11), the first clamping member (12) is movably arranged in a transverse direction relative to the second clamping member (13), the first clamping member (12) has a clamping position close to the second clamping member (13) and a releasing position away from the second clamping member (13), and when the first clamping member (12) is in a state of being moved in a longitudinal direction, the first clamping member (12) is in a state of being moved in a longitudinal direction. When the holding member (12) is located at the clamping position, the first clamping member (12) and the second clamping member (13) clamp the insulating rod (1); when the first clamping member (12) is located at the releasing position, the first clamping member (12) and the second clamping member (13) release the insulating rod (1); the driving part (14) is connected to the first clamping member (12) and is capable of driving the first clamping member (12) to move so that the first clamping member (12) switches between the clamping position and the releasing position; A rotating structure (20) is connected to the clamping structure (10), and the rotating structure (20) can drive the clamping structure (10) to rotate so as to screw the insulating rod (1).

2. The screwing assembly according to claim 1, characterized in that: The screwing assembly further comprises a transmission structure (122); the first clamping member (12) comprises a first clamping arm (121); the first clamping arm (121) is used to clamp the insulating rod (1); the transmission structure (122) is connected between the driving portion (14) and the first clamping arm (121); the driving portion (14) drives the first clamping arm (121) to move via the transmission structure (122) so that the first clamping member (12) switches between the clamping position and the releasing position.

3. The screwing assembly according to claim 2, characterized in that: The transmission structure (122) comprises a first rack (123) and a gear (124) which cooperate with each other, the first rack (123) extending along the transverse direction and connected to the first clamping arm (121), the driving part (14) comprising a first rotating motor (141), the gear (124) being arranged on an output shaft of the first rotating motor (141), the first rotating motor (141) driving the gear (124) to rotate and driving the first rack (123) to move in the transverse direction through the engagement between the gear (124) and the first rack (123).

4. The screwing assembly according to claim 3, characterized in that: The transmission structure (122) further comprises a second rack (132) matched with the gear (124); the second clamping member (13) comprises a second clamping arm (131); the second clamping arm (131) is arranged opposite to the first clamping arm (121) and is used to clamp the insulating rod (1); the second rack (132) extends along the transverse direction and is connected to the second clamping arm (131); the gear (124) is arranged between the second rack (132) and the first rack (123); when the gear (124) rotates, it drives the first rack (123) and the second rack (132) to move in opposite directions in the transverse direction.

5. The screwing assembly according to claim 2, characterized in that: The screwing assembly further comprises a mounting seat (31) and a guide rod (32) extending along the transverse direction, the first clamping arm (121) is arranged on the mounting seat (31), a sliding sleeve (33) is arranged on the mounting seat (31), and the sliding sleeve (33) is sleeved on the guide rod (32) and is guided and matched with the guide rod (32).

6. The screwing assembly according to claim 5, characterized in that: The first clamping arm (121) comprises a connecting rod (1211) and a clamping claw (1212); the clamping claw (1212) comprises a main body (1213) and a first limiting arm (1214) and a second limiting arm (1215) arranged at two ends of the main body (1213); the connecting rod (1211) extends in a vertical direction and is connected between the mounting seat (31) and the main body (1213); when the first clamping member (12) is located at the clamping position, the first limiting arm (1214) and the second limiting arm (1215) are located on both sides of the insulating rod (1) and are abutted against the outer surface of the insulating rod (1).

7. The screwing assembly according to claim 6, characterized in that: The clamping jaw (1212) further comprises a first limit block (1216), wherein the first limit block (1216) is arranged on the first limit arm (1214), and when the first clamping member (12) is located at the clamping position, the first limit block (1216) abuts against the outer surface of the insulating rod (1); and / or, The clamping jaw (1212) further comprises a second limit block (1217), wherein the second limit block (1217) is arranged on the second limit arm (1215), and when the first clamping member (12) is located at the clamping position, the second limit block (1217) abuts against the outer surface of the insulating rod (1).

8. The screwing assembly according to any one of claims 1 to 7, characterized in that: The rotating structure (20) comprises a second base (21) and a second rotating motor (22) arranged on the second base (21), and the clamping structure (10) is connected to the output shaft of the second rotating motor (22).

9. The screwing assembly according to claim 8, characterized in that: The screwing assembly also includes a sleeve (34), a stop block (35) and a stop groove (36); the sleeve (34) is arranged on the first base (11); the output shaft of the second rotating motor (22) is inserted into the sleeve (34); the stop block (35) and the stop groove (36) are matched for stop rotation; the stop block (35) is arranged on the output shaft of the second rotating motor (22); and the stop groove (36) is arranged on the inner side wall of the sleeve (34).

10. A grounding device, characterized in that: It comprises a grounding component and a screwing component, wherein the screwing component is the screwing component according to any one of claims 1 to 9, The grounding assembly comprises a grounding wire (4), an insulating rod (1), a limiting member (2) and a connecting hook (3); one end of the grounding wire (4) is connected to the connecting hook (3); the limiting member (2) and the connecting hook (3) are arranged at the upper end of the insulating rod (1); the limiting member (2) is movably arranged; the limiting member (2) can cooperate with the connecting hook (3) to clamp the grounding terminal of the electrical equipment; the screwing assembly can clamp and screw the lower end of the insulating rod (1) to drive the limiting member (2) to move, thereby causing the limiting member (2) to clamp or release the grounding terminal.

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