An electric high-voltage grounding device

Abstract

The present invention discloses an electric high-voltage grounding device, which relates to the technical field of grounding devices and includes a base, a lifting assembly arranged on the base, an angle adjustment assembly, a rotating and disassembling assembly, and a grounding clamp. The rotating and disassembling assembly is also provided with an electromagnetic anti-slip assembly. The angle adjustment assembly includes a rotating joint with two rotating axes parallel to each other. The rotating and disassembling assembly includes a mounting portion, a rotating portion, and a drive motor. The electromagnetic anti-slip assembly includes a limiter, an elastic member, and an electromagnet. The limiter is movably arranged on the rotating portion. The present invention can flexibly adjust the position of the grounding clamp clamping the high-voltage line, and can ensure good contact between the grounding clamp and the high-voltage line when the high-altitude wind speed is large and causes the high-voltage line to shake severely. In addition, a set of grounding devices can be equipped with multiple grounding clamps at the same time, making the whole very light and relatively low in cost. The electromagnetic anti-slip assembly can prevent the rotating portion of the rotating and disassembling assembly from falling off when the fastening bolt of the grounding clamp is screwed.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding devices, in particular to an electric high-voltage grounding device. Background Art

[0002] To ensure personal safety, 500kV high-voltage equipment must be grounded and three-phase short-circuited during testing, maintenance, troubleshooting, and emergency repairs. The 500kV grounding wire, a crucial technical measure for grounding high-voltage equipment, must be operated. When equipment is switched from cold standby to maintenance, the grounding wire must be installed at a suitable grounding point on the high-voltage equipment. The grounding wire must be removed when the equipment is switched from maintenance to cold standby. Only after the 500kV grounding wire is installed can safety fence installation and permitting be performed on-site. Only after the 500kV grounding wire is removed can power restoration be performed. Therefore, rapid installation and removal of the 500kV grounding wire is crucial.

[0003] The grounding point height of 500kV high-voltage equipment is generally between 8m and 15m. When operating the grounding wire, operation and maintenance personnel must use an insulated boom truck to work at height. On the boom truck, operation and maintenance personnel manually tighten the insulated support rod to complete the installation or removal of the grounding wire. The main problems are: due to the height of the 500kV equipment and the long distance between phases, operation and maintenance personnel need to move and transfer the insulated boom truck multiple times to complete the installation or removal of a set of three-phase grounding wires. Statistical analysis shows that the average time required to install and remove a set of 500kV grounding wires using an insulated boom truck is 60 minutes, which is a long operation time. Insulated boom trucks are also large in size and can easily accidentally touch live equipment when adjusting their position at height.

[0004] In order to improve the efficiency and safety of high-voltage grounding operations, the patent with announcement number CN218732785U discloses a movable electric lifting high-voltage cable grounding device, which includes a base with a handle on one side of the base, and also includes: a control unit, the control unit includes a control cabinet installed on the base, the control cabinet is provided with buttons and a display screen, the control cabinet has a built-in PLC unit, which is used to receive the signal feedback from the electromagnetic field strength detection element, and control the start and stop of the lifting mechanism according to pre-set safety requirements and action requirements; a clamping unit, a lifting mechanism for driving the clamping unit to lift and lower is provided on the base, the clamping unit includes a fixed plate installed on the top of the lifting mechanism, a clamping jaw is installed on the fixed plate, and an elastic contact piece is provided inside the clamping jaw; an electromagnetic field strength detection element is used to detect the electromagnetic field strength near the clamping jaw in real time and provide a signal to the control unit.

[0005] The above patent can safely, conveniently and quickly complete the grounding of high-voltage cables before equipment maintenance, reduce the workload of operators and improve work efficiency, but it also has shortcomings: (1) The position of the clamping unit can only be adjusted by adjusting the position of the base, which is not flexible enough. Once there are terrain restrictions or obstacles directly below the high-voltage power, the clamping claw will find it difficult to clamp the high-voltage line smoothly; (2) After the grounding device is grounded, it remains stationary relative to the earth, and the high-voltage line at high altitude has the phenomenon of wind movement, which may cause the high-voltage line to have poor contact with the clamping claw unit or even fall off; (3) A set of grounding devices can only install one clamping claw, and the work site usually needs to be equipped with multiple sets of grounding devices for smooth operation. The grounding cost of multiple sets of grounding devices is high and they are relatively bulky when carried. Summary of the Invention

[0006] The purpose of the present invention is to provide an electric high-voltage grounding device to solve the problems in the above-mentioned prior art that the grounding device is easily restricted by terrain, there is a risk of poor contact when the wind speed is high at high altitude, and the cost of using multiple sets of equipment in coordination is high and the transportation is cumbersome.

[0007] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electric high-voltage grounding device, comprising a base, a lifting assembly arranged on the base, and a grounding clamp, and also comprising: an angle adjustment assembly, which comprises two rotating joints whose rotating axes are parallel to each other, and one of the rotating joints is installed on the top of the lifting assembly; a rotating and disassembling assembly, which comprises a mounting portion, a rotating portion, and a driving motor, the mounting portion is connected to the other rotating joint of the angle adjustment assembly, the rotating portion is rotatably connected to the mounting portion, the rotating portion is provided with a slot that engages with a pin rod on a fastening bolt of the grounding clamp, the driving motor is installed in the mounting portion, and is used to drive the rotating portion to rotate to tighten the fastening bolt; an electromagnetic anti-slip assembly, which comprises a limiter, an elastic member, and an electromagnet, the limiter being movably arranged on the rotating portion, and the elastic member driving the limiter to move to an anti-slip position that restricts the pin rod in the slot during the process of restoring its deformation, and the electromagnet driving the limiter to disengage from the anti-slip position when energized.

[0008] Furthermore, the angle adjustment assembly also includes two driving units respectively used to drive the two rotary joints to rotate.

[0009] Furthermore, the grounding clamp includes a fixed clamp, a movable clamp rotatably connected to the fixed clamp along a horizontal axis, a fastening bolt rotatably connected to the fixed clamp along a vertical axis, and a top rod threadedly connected to the fastening bolt and abutting against the movable clamp. The fastening bolt has a connecting head at one end away from the top rod, and the connecting head can be plugged into and matched with the socket at the top of the rotating part. The pin rod is fixedly connected to the connecting head.

[0010] Furthermore, the limiting member is a rotating plate with a bayonet, which is rotatably connected to the rotating part through a rotating shaft fixedly connected thereto, a rocker arm is fixedly connected to the rotating shaft, and a first armature slides on the rocker arm; the elastic member is a torsion spring sleeved on the rotating shaft, one end of the torsion spring is connected to the rotating shaft, and the other end is connected to the rotating part, and the torsion spring releases the elastic force to drive the rotating plate to rotate so that the bayonet is engaged with the pin rod; the electromagnet is fixedly installed in the rotating part, and when power is turned on, it can magnetically cooperate with the first armature to drive the rotating plate to rotate so that the bayonet is disengaged from the pin rod.

[0011] Furthermore, the limit member is a locking rod that is horizontally slidably connected to the rotating part and has an oblique slot. The rotating part is vertically slidably connected to a vertical rod. The top of the vertical rod has an inclined surface that cooperates with the sliding connection of the oblique slot, and the bottom of the vertical rod is fixedly connected to a second armature. The elastic member is a first compression spring, and the elastic force of the first compression spring acts upward on the vertical rod to squeeze the locking rod into the slot through the vertical rod to block the pin rod. The electromagnet is fixedly installed in the rotating part, and when powered on, it can magnetically cooperate with the second armature to drive the vertical plate downward to make the locking rod exit the slot.

[0012] Furthermore, the rotating part is fixedly connected to a connecting shaft that extends into the interior of the mounting part and is coaxially fixedly connected to the output shaft of the drive motor. The connecting shaft is rotatably connected to the mounting part through a bearing. Two conductive rings that are respectively electrically connected to the positive and negative poles of the electromagnet are coaxially sleeved on the circumferential side surface of the connecting shaft. Two spring contacts that are respectively electrically connected to the positive and negative poles of the power supply are provided in the mounting part. The two spring contacts are in sliding contact with the two conductive rings in a one-to-one corresponding manner.

[0013] The cam is fixedly mounted on the drive shaft of the vehicle frame, and the cam is connected to the drive shaft by the second end of the driving member to rotate relative to the first end of the driving member, and the cam is connected to the first end of the driving member to rotate relative to the first end of the driving member.

[0014] Furthermore, the iron core and the second armature of the electromagnet are both hollow structures, and the output shaft of the drive motor passes through the iron core and the second armature and is connected to the hollow shaft.

[0015] Furthermore, a threaded ring is threadedly connected to the hollow shaft, and the second compression spring is sleeved on the hollow shaft, with its lower end abutting the gear plate and its upper end abutting the threaded ring. The initial compression amount of the second compression spring can be adjusted by screwing the threaded ring.

[0016] Furthermore, a camera is installed on the installation portion.

[0017] Compared with the prior art, the present invention provides an electric high-voltage grounding device, which (1) can flexibly adjust the position of the grounding clamp holding the high-voltage line by providing an angle adjustment component having a rotating joint with two rotating axes parallel to each other, without having to rely solely on adjusting the position of the base to adjust the position of the grounding clamp. Even if there are terrain restrictions or obstacles directly below the high-voltage line, the grounding clamp can still smoothly clamp the high-voltage line; (2) After the grounding clamp of the grounding device is installed on the high-voltage line, the rotating assembly and disassembly component will be separated from the grounding clamp, so that even if the high-altitude wind speed is large and causes the high-voltage line to shake severely, the grounding clamp will move with the high-voltage line, and the rotating assembly and disassembly component, the lifting component, etc. will not limit the movement of the grounding clamp, thereby ensuring good contact between the grounding clamp and the high-voltage line. Good; (3) A set of grounding devices can be equipped with multiple grounding clamps at the same time, and each grounding clamp can be installed one by one on each high-voltage line, so that the grounding device as a whole is very light and the cost is relatively low; (4) By setting an electromagnetic anti-detachment component, the pin rod on the fastening bolt can be clamped and restricted in the slot of the rotating part by the limiter during the lifting and lowering of the lifting component and during the plug-in cooperation between the rotating part of the rotating and disassembling component and the fastening bolt of the grounding clamp, so that the rotating part of the rotating and disassembling component will not fall off when the fastening bolt of the grounding clamp is screwed, and the rotating part will not be separated from the fastening bolt even when the wind speed at high altitude is large, so that the fastening bolt can be smoothly tightened to make the grounding clamp clamp the high-voltage line or the fastening bolt can be loosened to make the grounding clamp loosen the high-voltage line. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments is given below.

[0019] Figure 1 A schematic diagram of the overall structure provided for the embodiment;

[0020] Figure 2 A schematic diagram of a partial structure provided for an embodiment;

[0021] Figure 3 A schematic diagram of the structure of a grounding clamp provided in an embodiment;

[0022] Figure 4 A cross-sectional view of the structure of the grounding clamp provided in the embodiment;

[0023] Figure 5 A schematic diagram of the connection structure between the ejector rod and the movable clamp provided in the embodiment;

[0024] Figure 6 A cross-sectional view of the structure of the electromagnetic anti-slip assembly provided in the embodiment;

[0025] Figure 7 A schematic diagram of the structure of the electromagnetic anti-slip assembly provided in the embodiment;

[0026] Figure 8 A cross-sectional view of the structure of an electromagnetic anti-slip assembly provided in another embodiment;

[0027] Figure 9 A schematic structural diagram of an electromagnetic anti-slip assembly provided in another embodiment;

[0028] Figure 10 A structural cross-sectional view of an electromagnetic anti-slip assembly provided in yet another embodiment;

[0029] Figure 11 A schematic structural diagram of an electromagnetic anti-slip assembly provided in yet another embodiment.

[0030] Description of reference numerals:

[0031] 1. Base; 2. Lifting assembly; 3. Angle adjustment assembly; 31. Intermediate rod; 32. Rotating joint; 33. Electric push rod; 4. Rotating assembly and disassembly assembly; 41. Mounting part; 42. Rotating part; 43. Socket; 44. Slot; 45. Drive motor; 46. Output shaft; 47. Connecting shaft; 51. Rotating plate; 52. Rotating shaft; 53. Rocker; 54. Torsion spring; 55. Electromagnet; 56. First armature; 57. Wire; 58. Conductive ring; 59. Spring contact; 510, locking rod; 511, vertical rod; 512, connecting plate; 513, first compression spring; 514, second armature; 515, connecting rod; 516, hollow shaft; 517, latching teeth; 518, toothed disc; 519, second compression spring; 520, threaded ring; 6, grounding clamp; 61, fixed clamp; 62, movable clamp; 63, fastening bolt; 64, connector; 65, pin rod; 66, push rod; 67, limit rod; 7, camera; 71, bracket. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figures 1-11 An embodiment of the present invention provides an electric high-voltage grounding device, comprising a base 1, a lifting assembly 2 arranged on the base 1, an angle adjustment assembly 3, a rotating and disassembling assembly 4, and a grounding clamp 6. The rotating and disassembling assembly 4 is also provided with an electromagnetic anti-detachment assembly.

[0034] A handle is provided on one side of the base 1, and the base 1 has a universal wheel with a locking function. The universal wheel can be turned on the spot. The locking function of the universal wheel can prevent the base 1 from being unstable during the installation and removal of the grounding clamp 6. The four supporting legs provided on the base 1 can effectively prevent the base 1 from tilting or even falling during the lifting and lowering of the support rod and the installation and removal of the grounding clamp 6.

[0035] Lifting assembly 2 is comprised of multiple sections of slidably connected support rods. The first section is fixedly mounted in the center of base 1 and equipped with reinforcing ribs. Lifting assembly 2 utilizes a pneumatic traction lifting module. A cylinder is positioned between the second and first sections, which pneumatically lifts the second section relative to the first. The remaining sections are lifted synchronously using insulating tape, which increases the lifting speed of lifting assembly 2. The insulating tape and the individual sections of the support rods are removable, facilitating annual pressure testing of the support rods and tape. Lifting assembly 2 can also utilize other conventional solutions for driving the individual sections of the support rods to extend or retract.

[0036] See Figure 2 The angle adjustment assembly 3 includes two rotary joints 32 with parallel rotation axes, an intermediate rod 31, and two electric push rods 33. The two rotary joints 32 are respectively disposed at the ends of the intermediate rod 31. One rotary joint 32 is mounted on the top of the lifting assembly 2 and is rotationally connected to the top of the lifting assembly 2. The other rotary joint 32 is rotationally connected to the mounting portion 41 of the rotary assembly and disassembly assembly 4. The ends of one electric push rod 33 are respectively hinged to the top of the lifting assembly 2 and the intermediate rod 31. The ends of the other electric push rod 33 are respectively hinged to the mounting portion 41 of the rotary assembly and disassembly assembly 4 and the intermediate rod 31. Of course, in addition to using the electric push rods 33 to drive the rotary joints 32 to rotate, a drive unit such as a servo motor can also be used to drive the rotary joints 32 to rotate.

[0037] When the lifting assembly 2 raises the grounding clamp 6 to the vicinity of the high-voltage line, if the clamp head is not aligned with the high-voltage line or needs to avoid other electrical hardware, the grounding clamp 6 can be adjusted horizontally by simply rotating the intermediate rod 31 clockwise by a certain angle relative to the lifting assembly 2 using one of the electric push rods 33, and rotating the rotating assembly 4 counterclockwise by the same angle relative to the intermediate rod 31 using the other electric push rod 33, thereby facilitating the grounding clamp 6 to clamp the high-voltage line. Therefore, by providing an angle adjustment assembly 3 having two rotating joints 32 with parallel rotation axes, the position of the grounding clamp 6 with respect to the high-voltage line can be flexibly adjusted, eliminating the need to rely solely on adjusting the position of the base 1 to adjust the position of the grounding clamp 6. Even if there are terrain restrictions or obstacles directly below the high-voltage line, the grounding clamp 6 can still successfully clamp the high-voltage line.

[0038] See Figure 2 、 Figure 6The rotating assembly and disassembly component 4 specifically includes a mounting portion 41, a rotating portion 42, and a drive motor 45. The mounting portion 41 is mounted on the angle adjustment component 3, and the rotating portion 42 is rotatably connected to the mounting portion 41. The top of the rotating portion 42 has a socket 43, the upper end of which is chamfered. The four sides of the top of the rotating portion 42 are provided with slots 44. The mounting portion 41 and the rotating portion 42 are both in the shape of a tubular rod, each having a cavity inside. The drive motor 45 is fixedly mounted in the cavity of the mounting portion 41, and its output shaft 46 is connected to the rotating portion 42 to drive the rotating portion 42 to rotate so as to tighten the bolt 63 of the ground clamp 6. A camera 7 is also mounted on the mounting portion 41 via a bracket 71. The camera 7 can capture image information of aerial operations in real time and transmit the image information to a display terminal on the ground, enabling operations such as clamping the high-voltage wire by the ground clamp 6 and docking the rotating portion 42 with the tightening bolt 63 to be more precise.

[0039] See Figure 3-5 The grounding clamp 6 includes a fixed clamp 61 as a main body, a movable clamp 62, a fastening bolt 63 and a push rod 66. The fixed clamp 61 is connected to a grounding wire. The movable clamp 62 is rotatably connected to the fixed clamp 61 along a horizontal axis. The fixed clamp 61 has a vertical groove. The fastening bolt 63 and the push rod 66 are both located in the groove. The fastening bolt 63 is rotatably connected to the fixed clamp 61 along the vertical axis. Specifically, an annular notch is provided on the fastening bolt 63. A limiting rod 67 is fixedly connected or rotatably connected to the fixed clamp 61. The limiting rod 67 passes through the annular notch, thereby limiting the fastening bolt 63 to rotate only in the groove and not to axially displace in the groove. The push rod 66 is threadedly connected to the fastening bolt 63. The top of the movable clamp 62 has an opening, and the top of the push rod 66 is provided with a flat portion that passes through the opening. In this way, the top of the push rod 66 abuts the movable clamp 62, and the flat portion is restricted within the opening, so that the push rod 66 can only move axially relative to the fixed clamp 61, but cannot rotate relative to the fixed clamp 61. The clamping portion of the movable clamp 62 and the position where the movable clamp 62 is abutted by the push rod 66 are distributed on both sides of the horizontal axis of the movable clamp 62. The end of the fastening bolt 63 away from the push rod 66 has a connector 64. The connector 64 can be plugged into the socket 43 at the top of the rotating part 42. A pin 65 is fixedly connected to the connector 64. When the connector 64 is inserted into the socket 43 of the rotating part 42, the pin 65 engages with the slot 44.

[0040] The grounding clamp 6 is delivered to the high-voltage line via the lifting assembly 2. When the grounding clamp 6 is placed on the high-voltage line, the high-voltage line is located between the fixed clamp 61 and the movable clamp 62. The driving motor 45 drives the rotating portion 42 to rotate. The rotating portion 42 drives the fastening bolt 63 to rotate through the connector 64. The fastening bolt 63 is threadedly engaged with the push rod 66 to move the push rod 66 upward, so that the push rod 66 abuts the movable clamp 62, causing the movable clamp 61 to rotate and close. The movable clamp 62 cooperates with the rotating clamp to clamp the high-voltage line. The high-voltage line is connected to the ground through the fixed clamp 61 and the grounding wire. The lifting assembly 2 is then retracted to disengage the rotating portion 42 from the connector 64. Other grounding clamps 6 can then be installed using this grounding device.

[0041] Since the grounding clamp 6 of this grounding device is detached from the rotating portion 42 after installation, even in high wind speeds at high altitudes, causing the high-voltage line to sway severely, the grounding clamp 6 will move with the high-voltage line. The rotating assembly 4 and the lifting assembly 2 will not restrict the movement of the grounding clamp 6, thereby ensuring good contact between the grounding clamp 6 and the high-voltage line. Furthermore, a set of grounding clamps 6 can be equipped with multiple grounding clamps 6 at the same time, and each grounding clamp 6 can be installed one by one on each high-voltage line. This makes the grounding device as a whole very lightweight, easy to transport, and relatively low in cost.

[0042] The electromagnetic anti-slip assembly provided on the rotary assembly / disassembly assembly 4 primarily comprises a stopper, an elastic member, and an electromagnet 55. The stopper is movably disposed on the rotating portion 42. The movement of the stopper forms an anti-slip position that constrains the pin 65 within the slot 44, thereby preventing the connector 64 from detaching from the rotating portion 42 during the raising and lowering of the lifting assembly 2 and during the tightening of the fastening bolt 63 by the rotating portion 42. As the elastic member recovers its deformation, the elastic force drives the stopper to the anti-slip position. When energized, the electromagnet 55 then drives the stopper out of the anti-slip position, thereby no longer constraining the pin 65. By providing an electromagnetic anti-slip assembly, when the rotating part 42 of the rotating and disassembling assembly 4 is plugged into the fastening bolt 63 of the grounding clamp 6, the pin 65 on the fastening bolt 63 can be clamped and restricted in the clamping groove 44 of the rotating part 42 through the limiter, so that the rotating part 42 of the rotating and disassembling assembly 4 will not fall off when the fastening bolt 63 of the grounding clamp 6 is screwed, and the rotating part 42 will not be separated from the fastening bolt 63 even when the wind speed at high altitude is large, so that the fastening bolt 63 can be smoothly tightened to make the grounding clamp 6 clamp the high-voltage line or the fastening bolt 63 can be loosened to make the grounding clamp 6 loosen the high-voltage line.

[0043] There are three sets of design options for the specific structure of the electromagnetic anti-drop assembly. In option one, refer to Figure 6-Figure 7The limiting members are two rotating plates 51 with bayonet holes. Both rotating plates 51 are fixedly connected to a rotating shaft 52, which extends through and rotatably connects to the rotating portion 42. A rocker 53 is also fixedly connected to the middle of the rotating shaft 52, on which a ring-shaped first armature 56 slides. The elastic member is a torsion spring 54 that is movably sleeved on the rotating shaft 52. One end of the torsion spring 54 is connected to the rotating shaft 52, and the other end is connected to the rotating portion 42. When the torsion spring 54 releases its elastic force, it rotates the rotating plates 51, causing the bayonet holes to engage with the pin 65. In this state, the rotating plates 51 are in the anti-slip position. In this state, the rocker 53 is tilted relative to the end face of the electromagnet 55 core, and the first armature 56 is offset and tilted relative to the core. The iron core and coil winding of the electromagnet 55 are fixedly installed in the rotating part 42. The electromagnet 55 generates a magnetic attraction when energized, and can magnetically cooperate with the first armature 56 to make the first armature 56 fit with the end face of the iron core. Relative sliding occurs between the first armature 56 and the rocker arm 53, and drives the rocker arm 53 to rotate. The rocker arm 53 rotates the rotating plate 51 out of the anti-slip position through the rotating shaft 52, that is, the bayonet of the rotating plate 51 disengages the pin 65, and also causes the torsion spring 54 to store energy.

[0044] A connecting shaft 47 is fixedly connected to the rotating portion 42. The connecting shaft 47 extends into the interior of the mounting portion 41 and is rotatably connected to the mounting portion 41 via a bearing. Two conductive rings 58 are coaxially sleeved on the circumferential side of the connecting shaft 47 located within the mounting portion 41. The two conductive rings 58 are electrically connected to the positive and negative poles of the electromagnet 55 via wires 57. Two spring contacts 59 are provided within the mounting portion 41. The two spring contacts 59 slide and abut against the circumferential side surfaces of the two conductive rings 58 in a one-to-one correspondence. The two spring contacts 59 are electrically connected to the positive and negative poles of the power supply. In this way, although the rotating portion 42 rotates with the electromagnet 55, the sliding contact between the conductive rings 58 and the spring contacts 59 ensures that the rotating electromagnet 55 continues to be powered.

[0045] In Option 2, see Figure 8-Figure 9The limiting member comprises a plurality of locking rods 510, each of which is horizontally slidably connected to a locking rod slot within the rotating portion 42 and has an oblique notch. A plurality of vertical rods 511 are vertically slidably connected to the rotating portion 42, each corresponding to a locking rod 510. The tops of the vertical rods 511 are fixedly connected together via a connecting plate 512 and are fixedly connected to a second armature 514. The tops of the vertical rods 511 have an inclined surface, which is slidably connected to the bottom of the oblique notch. For example, one of the two inclined surfaces is provided with a slider, and the other is provided with a slide groove, and the slider is slidably disposed in the slide groove. The elastic member is a first compression spring 513, the lower end of which abuts a stopper on the inner wall of the rotating portion 42, and the upper end abuts the vertical rod 511. The elastic force of the first compression spring 513 acts upward on the vertical rod 511, causing it to move upward. The vertical rod 511, through the inclined surface at its top, slides and squeezes with the inclined slot, thereby causing the locking rod 510 to slide into the slot 44, i.e., the anti-slip position. The locking rod 510 blocks the pin 65, preventing it from escaping the slot 44. The electromagnet 55 is still fixedly mounted in the rotating portion 42. When energized, it can magnetically cooperate with the second armature 514 to drive the vertical plate downward, thereby causing the locking rod 510 to exit the slot 44 and no longer restrict the pin 65.

[0046] The power supply method of the electromagnet 55 in the second solution is the same as the power supply method of the electromagnet 55 in the first solution.

[0047] In option three, see Figure 10-11 The installation method of the limiting member, vertical rod 511, and elastic member is the same as that of the second embodiment, with the difference that the electromagnet 55 is fixedly mounted within the mounting portion 41, and a connecting rod 515 is fixedly connected to the bottom center of the connecting plate 512. The bottom of the connecting rod 515 is rotatably connected to a hollow shaft 516. The hollow shaft 516 is axially (vertically) slidably mounted on the output shaft 46 of the drive motor 45. Specifically, a first limiting groove is axially defined on the inner wall of the hollow shaft 516, and a first ridge is provided on the circumferential side surface of the output shaft 46 of the drive motor 45, which is located within the first limiting groove. Therefore, the hollow shaft 516 can move axially along the output shaft 46 but cannot rotate circumferentially along the output shaft 46.

[0048] The hollow shaft 516 has a larger diameter section with a circle of latching teeth 517 on its end surface. A toothed disc 518 is movably mounted on the smaller diameter section of the hollow shaft 516. The toothed disc 518 can both move axially and rotate circumferentially along the hollow shaft 516. A second compression spring 519 is movably mounted on the hollow shaft 516 and is threadedly connected to a threaded ring 520. The bottom of the second compression spring 519 abuts the toothed disc 518, while the top abuts the threaded ring 520. By turning the threaded ring 520, the initial compression of the second compression spring 519, i.e., the initial force applied by the second compression spring 519 to the toothed disc 518, can be adjusted. Under the pressure of the second compression spring 519, the toothed disc 518 engages with the latching teeth 517. The teeth of both the latching teeth 517 and the toothed disc 518 are triangular pyramidal in shape. The toothed disc 518 is also vertically slidably connected to the rotating portion 42. Specifically, a second limiting groove is formed on the side surface of a circular inner wall of the rotating portion 42, and a second ridge is formed on the peripheral side surface of the toothed disc 518. The second ridge is located in the second limiting groove. Therefore, the toothed disc 518 can move vertically along the rotating portion 42 but cannot rotate relative to the rotating portion 42. The output shaft 46 of the drive motor 45 rotates, driving the hollow shaft 516 to rotate. The hollow shaft 516 then engages with the toothed disc 518 via the latching teeth 517, driving the rotation of the toothed disc 518. The toothed disc 518 then drives the rotating portion 42 to rotate.

[0049] A hollow second armature 514 is fixedly connected to the bottom of the hollow shaft 516. The electromagnet 55 is fixedly mounted within the mounting portion 41. The iron core of the electromagnet 55 is also hollow. The output shaft 46 of the drive motor 45 passes through the iron core and the second armature 514 before being connected to the hollow shaft 516. When energized, the electromagnet 55 magnetically attracts the second armature 514. When the second magnet moves closer to the electromagnet 55, the hollow shaft 516 simultaneously moves downward relative to the output shaft 46 and the rotating portion 42. As a result, the hollow shaft 516, via the connecting rod 515 and the vertical rod 511, disengages the locking rod 510 from the anti-slip position. In other words, the locking rod 510 retracts from the retaining groove 44 and no longer restricts the pin 65. Simultaneously, the second compression spring 519 is further compressed to store energy without affecting the rotational transmission between the output shaft 46 and the rotating portion 42.

[0050] Compared with Scheme 1 and Scheme 2, in Scheme 3, the electromagnet 55 is installed in the mounting portion 41. On the one hand, when the driving motor 45 drives the rotating portion 42 to rotate, there is no need to drive the electromagnet 55 to move together, which can reduce the load of the driving motor 45 and extend the battery life of the power supply battery; on the other hand, due to the long-term friction between the conductive ring 58 and the spring contact 59 in Scheme 1 and Scheme 2, there are hidden dangers such as wear and loss between the spring contact 59 and the conductive ring 58, easy generation of electric sparks, and unstable contact. Therefore, Scheme 3 does not need to set up the conductive ring 58 and spring contact 59 structure. When the electromagnet 55 is energized, it can also normally cooperate with the second armature 514 to magnetically drive the locking rod 510 out of the bayonet, thereby greatly improving the safety and service life of the electromagnetic anti-detachment component.

[0051] Furthermore, as the output shaft 46 of the drive motor 45 drives the rotating portion 42 to rotate via the hollow shaft 516, if the movable clamp 62 and the fixed clamp 61 of the grounding clamp 6 clamp the high-voltage line, or if the rotating portion 42, the movable clamp 62, or other structures experience an abnormal jam, the latching teeth 517 on the hollow shaft 516 overcome the elastic force of the second compression spring 519 and press the toothed disc 518 upward, thereby disengaging the latching teeth 517 from the toothed disc 518 and causing the output shaft 46 to drive the hollow shaft 516 to idle, thereby protecting the drive motor 45 from overload damage. Furthermore, by adjusting the initial compression of the second compression spring 519 by screwing the threaded ring 520, i.e., the initial force exerted by the second compression spring 519 on the toothed disc 518, the resistance threshold experienced by the rotating portion 42 when the toothed disc 518 disengages from the latching teeth 517 can be adjusted, thereby adjusting the degree of tightening of the abutment clamp's fastening bolts 63, i.e., the force with which the grounding clamp 6 grips the high-voltage line.

[0052] The above description of certain exemplary embodiments of the present invention should not be construed as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments may be modified in other different ways without departing from the spirit and scope of the present invention.

Claims

1. An electric high-voltage grounding device, comprising a base, a lifting assembly arranged on the base, and a grounding clamp, characterized in that: Also includes: An angle adjustment assembly, comprising two rotary joints whose rotation axes are parallel to each other, one of which is mounted on the top of the lifting assembly; A rotary assembly and disassembly assembly comprising a mounting portion, a rotating portion, and a drive motor. The mounting portion is connected to another rotary joint of the angle adjustment assembly. The rotating portion is rotatably connected to the mounting portion. The rotating portion is provided with a slot that engages with a pin on a fastening bolt of the grounding clamp. The drive motor is mounted within the mounting portion and is used to drive the rotating portion to rotate so as to tighten the fastening bolt. An electromagnetic anti-slip assembly includes a limiter, an elastic member, and an electromagnet. The limiter is movably arranged on the rotating portion. When the elastic member recovers its deformation, it drives the limiter to move to an anti-slip position that restricts the pin rod in the slot. When the electromagnet is energized, it drives the limiter out of the anti-slip position. The limiting member is a locking rod horizontally slidably connected to the rotating part and having an oblique notch. The rotating part is vertically slidably connected to a vertical rod, and the top of the vertical rod has an inclined surface that is slidably connected to the oblique notch. The bottom of the vertical rod is rotatably connected to a hollow shaft with a second armature at the bottom through a connecting rod. The hollow shaft is axially slidably sleeved on the output shaft of the driving motor. A circle of latching teeth is provided on the hollow shaft and a gear disc is sleeved thereon. A second compression spring is provided between the hollow shaft and the gear disc. The elastic force of the second compression spring acts on the gear disc to engage the gear disc with the latching teeth. The gear disc is vertically slidably connected to the rotating part. The elastic member is a first compression spring, and the elastic force of the first compression spring acts upward on the vertical rod to squeeze the locking rod into the slot through the vertical rod to block the pin rod; The electromagnet is fixedly mounted in the mounting portion and can cooperate with the second armature to magnetically drive the hollow shaft and the vertical plate to move downward when power is supplied, so that the locking rod can exit the slot.

2. The electric high-voltage grounding device according to claim 1, characterized in that: The angle adjustment assembly further includes two driving units respectively used to drive the two rotary joints to rotate.

3. The electric high-voltage grounding device according to claim 1, characterized in that: The grounding clamp includes a fixed clamp, a movable clamp rotatably connected to the fixed clamp along a horizontal axis, a fastening bolt rotatably connected to the fixed clamp along a vertical axis, and a top rod threadedly connected to the fastening bolt and abutting against the movable clamp. The fastening bolt has a connecting head at one end away from the top rod, and the connecting head can be plugged into and matched with the socket at the top of the rotating part. The pin rod is fixedly connected to the connecting head.

4. The electric high-voltage grounding device according to claim 1, characterized in that: The iron core and the second armature of the electromagnet are both hollow structures, and the output shaft of the drive motor passes through the iron core and the second armature and is connected to the hollow shaft.

5. The electric high-voltage grounding device according to claim 1, characterized in that: The hollow shaft is threadedly connected with a threaded ring. The second compression spring is sleeved on the hollow shaft, with its lower end abutting against the gear plate and its upper end abutting against the threaded ring. The initial compression amount of the second compression spring can be adjusted by screwing the threaded ring.

6. The electric high-voltage grounding device according to claim 1, characterized in that: A camera is installed on the installation portion.

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