A grounding assembly that is easy to install

Abstract

The present invention discloses a grounding assembly that is easy to install, and relates to the technical field of grounding devices, including a plurality of grounding units arranged in sequence, and a connecting rod assembly is movably arranged between each adjacent grounding unit, and the connecting rod assembly includes a swing rod and a parallel connecting rod, and the grounding unit includes a base, a round rod and a hook, one end of the round rod is connected to the base along a horizontal axis, and the other end is fixedly connected to the hook, and the base is connected to the swing rod and the parallel connecting rod of the adjacent connecting rod assembly. For each grounding unit located in the middle, each base and the rotating shaft of two adjacent swing rods are coaxially connected with a gear, and the two gears are meshed, and the two gears are fixed to the corresponding swing rod. Each grounding unit of the present invention can be simultaneously hung on each wire of the overhead line, and the spacing between each grounding unit is adjustable, and can be used for the grounding of overhead lines of different specifications, and each connecting rod assembly can be folded and closed, so that the grounding assembly can be stored and carried conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of grounding devices, in particular to a grounding assembly which is easy to install. Background Art

[0002] When an overhead line needs to be inspected or maintained, such as replacing insulators or adjusting lines, the overhead line needs to be de-energized and grounded to ensure the safety of the workers. The grounding device is generally installed near the insulator string of the overhead line. For bare wires, the metal hook of the grounding device is usually directly hung on the bare wire; for wires with an insulating layer, the grounding ring needs to be installed on the line through the piercing wire clamp, and then the metal hook of the grounding device is hung on the grounding ring. The metal hook of the grounding device is connected to the ground through the grounding wire, and the induced current or fault current that may exist on the line is introduced into the ground, so that the line remains at the same potential as the ground, thereby avoiding the risk of electric shock to the workers.

[0003] The patent with the announcement number CN215896744U discloses a new type of overhead line grounding device for anti-live installation, which includes a gun operating rod, a hook at the hook end of the gun operating rod is buckled with a grounding wire clamp, a grounding wire is conductively connected to the grounding wire clamp, and the other end of the grounding wire is conductively connected to a grounding electrode. One device can only be used for grounding a single wire.

[0004] The patent with the announcement number CN203859248U discloses a short-circuit grounding device for overhead line maintenance, which includes three operating rods, each of which is connected to a grounding wire through a hook, and the tails of the three grounding wires intersect through an anti-breakage spring sleeve and extend to form a main grounding wire, and the end of the main grounding wire is connected to a grounding head. When installing it, the three sets of operating rod hook devices need to be hung on the three wires in sequence.

[0005] The patent with announcement number CN207753179U discloses a poleless grounding device for 10kV overhead lines. When the line is hung and connected, two basic wire clamps are first hung on the two ends of the towing rod of the towing wire clamp, and the three connecting pieces at the upper end of the down conductor are connected to the three wire clamps respectively, wherein the down conductor at the lower end of the connecting piece connected to the towing wire clamp is grounded; then the operating rod is connected to the cylindrical plug at the lower end of the towing wire clamp, and then the towing wire clamp is hung on any one side of the three-phase conductor, and then the operating rod is separated from the towing wire clamp, and then the basic wire clamp is removed from the towing rod and hung on the other two-phase conductors through the operating rod.

[0006] In the prior art such as the above-mentioned patent, for the grounding of three-phase three-wire lines or three-phase four-wire lines, usually multiple wires need to use multiple grounding devices, each grounding device includes an insulating operating rod and a hook (wire clamp), and each abutment device is hung on each wire in turn. Multiple grounding devices are grounded separately or through a bus. In some cases, multiple hooks are hung on each wire in turn through an insulating operating rod, and an insulating operating rod needs to be loaded and unloaded with each hook separately. It can be seen that the shortcomings of the prior art are: when facing the grounding of three-phase three-wire lines or three-phase four-wire lines, there are repeated steps, and the operation is relatively cumbersome. Summary of the invention

[0007] The object of the present invention is to provide a grounding assembly that is easy to install to solve the above-mentioned deficiencies in the prior art.

[0008] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grounding assembly that is easy to install, comprising a plurality of grounding units arranged in sequence, wherein connecting rod assemblies are movably arranged between adjacent grounding units, and each connecting rod assembly comprises a rocker arm and a parallel connecting rod; each grounding unit comprises a base, a round rod and a hook, one end of the round rod is rotatably connected to the base along a horizontal axis, and the other end is fixedly connected to the hook, and the base is rotatably connected to the rocker arm and the parallel connecting rod of the adjacent connecting rod assembly.

[0009] Furthermore, for each grounding unit located in the middle, a gear is coaxially connected to the base and the rotating shafts of two adjacent swing rods, the two gears are meshed, and the two gears are fixed to the corresponding swing rods.

[0010] Furthermore, a first locking member is provided between the base of at least one grounding unit and the corresponding swing rod.

[0011] Furthermore, an insulating operating rod is provided on the round rod of at least one grounding unit, and the length direction of the insulating operating rod is parallel to the axial direction of the round rod.

[0012] Furthermore, a rotating head is fixedly connected to the round rod of each grounding unit, a corresponding horizontal axis is fixedly connected to the rotating head, and the horizontal axis is rotatably connected to the base.

[0013] Furthermore, telescopic rods are respectively arranged between the round rods of adjacent grounding units, and both ends of each telescopic rod are rotatably connected with a sleeve ring, and each sleeve ring is rotatably sleeved on the adjacent round rod.

[0014] Furthermore, a second locking member is provided between the round rod of at least one grounding unit and the base.

[0015] Furthermore, for any set of matched connecting rod assemblies and grounding units, the rotating axis between the base and the swing rod and the parallel connecting rod is parallel and perpendicular to the corresponding horizontal axis.

[0016] Furthermore, each grounding unit also includes a grounding wire, one end of which is conductively connected to the corresponding hook, and the other end of which is used to connect to the ground.

[0017] Furthermore, the number of the grounding units is four.

[0018] In the above technical scheme, the present invention provides a grounding assembly that is easy to install, in which each grounding unit is connected by a connecting rod assembly, and the spacing of each grounding unit in the horizontal direction of the vertical wire can be adjusted by adjusting the angle between adjacent swing arms to adapt to the wire spacing in single-phase two-wire lines or three-phase four-wire lines of different specifications; and the parallel connecting rod can keep each grounding unit parallel while the angle of the adjacent swing arms is changed, so as to adapt to the wires erected in parallel. Each grounding unit of the present invention can be simultaneously hung on each wire of the overhead line, and the spacing between each grounding unit is adjustable, which can be used for the grounding of overhead lines of different specifications (wire spacing), and each connecting rod assembly can be folded and closed, so that the grounding assembly can be stored and carried conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure for grounding a three-phase four-wire line provided by an embodiment of the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of the structure at A;

[0022] Figure 3 For the present invention Figure 1 A magnified view of the structure at B in FIG.

[0023] Figure 4 A partial structural schematic diagram of a three-phase four-wire line grounding system provided by an embodiment of the present invention;

[0024] Figure 5 A plan view of a structure for grounding a three-phase four-wire line provided by an embodiment of the present invention;

[0025] Figure 6 A top view of a structure for grounding a three-phase four-wire line provided in an embodiment of the present invention;

[0026] Figure 7A structural exploded view of a grounding unit and a second locking member provided in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structure of the embodiment of the present invention when it is stored;

[0028] Fig. 9 A top view of the structure when stored provided by an embodiment of the present invention;

[0029] Fig.10 A schematic diagram of the overall structure for grounding a three-phase three-wire line provided by an embodiment of the present invention;

[0030] Fig.11 For the present invention Fig.10 A magnified view of the structure at C in FIG.

[0031] Fig.12 A plan view of the overall structure for grounding a three-phase three-wire line provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Grounding unit; 11. Base; 12. Rotating head; 13. Horizontal axis; 14. Round rod; 15. Hook; 16. Grounding wire; 2. Connecting rod assembly; 21. Rocker rod; 22. Parallel connecting rod; 3. Insulating operating rod; 4. Gear; 5. Telescopic rod; 6. Ring; 7. First locking piece; 71. First screw; 72. First nut; 8. Second locking piece; 81. Second screw; 82. Second nut; 9. L-shaped sleeve. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-Figure 12An embodiment of the present invention provides a grounding assembly that is easy to install, including four grounding units 1 arranged in sequence, and connecting rod assemblies 2 are movably arranged between each adjacent grounding unit 1, that is, there are three connecting rod assemblies 2, and each connecting rod assembly 2 includes a swing rod 21 and a parallel connecting rod 22; each grounding unit 1 includes a base 11, a rotating head 12, a round rod 14 and a hook 15, one end of the round rod 14 is fixedly connected to the rotating head 12, a horizontal shaft 13 is fixedly connected to the rotating shaft, the horizontal shaft 13 is rotatably connected to the base 11, and the other end of the round rod 14 is fixedly connected to the hook 15, the base 11 is rotatably connected to the swing rod 21 and the parallel connecting rod 22 of the adjacent connecting rod assemblies 2, and the hook 15 adopts an elastic wire clamp in the prior art, and its inverted U-shaped main body is rotatably connected to two symmetrical arc rods inside, and the two arc rods abut against each other under the elastic force of the torsion spring, and the top of the two arc rods and the top of the inverted U-shaped main body form a wire groove for clamping bare wires or grounding hanging rings. For any set of matching connecting rod assembly 2 and grounding unit 1, the rotating axis between the base 11 of the grounding unit 1 and the rocker rod 21 of the connecting rod assembly 2, and the rotating axis between the base 11 of the grounding unit 1 and the parallel connecting rod 22 of the connecting rod assembly 2 are parallel to each other and perpendicular to the corresponding horizontal axis 13.

[0036] Each grounding unit 1 also includes a grounding wire 16, a wiring screw is fixedly connected to the hook 15, the wire nose at the end of the grounding wire 16 is sleeved on the wiring screw, and then threadedly connected to the wiring screw through a round head cap nut, and the wire nose is pressed against the hook 15, so that the grounding wire 16 and the hook 15 are conductively connected, and the other end of the grounding wire 16 is connected to the ground through a grounding electrode or a grounding bar. Each grounding unit 1 can be equipped with a grounding wire 16 connected to the ground alone, or a branch line can be equipped alone, and then the branch lines of the four grounding units 1 are aggregated into a bus, and then the bus is connected to the ground.

[0037] For the two grounding units 1 located in the middle, the base 11 of each grounding unit 1 and the rotating shafts of the two adjacent swing rods 21 are coaxially connected with gears 4, the two gears 4 are fixed to the corresponding swing rods 21, and the two gears 4 are meshed with each other. Before the two gears 4 are meshed, they need to be calibrated so that the two adjacent swing rods 21 of the grounding unit 1 are symmetrical about the grounding unit 1. For example, when the base 11 of the grounding unit 1 and the two adjacent swing rods 21 are on the same straight line, the two gears 4 are meshed. In this way, only the angle between two adjacent swing rods 21 needs to be adjusted, and the angles between the other adjacent swing rods 21 are automatically and synchronously adjusted to be consistent, thereby facilitating the synchronous adjustment of the spacing of each grounding unit 1 in the horizontal direction of the vertical wire.

[0038] Among the four grounding units 1, a first locking member 7 is provided between the base 11 and the corresponding rocker arm 21 of at least one grounding unit 1. The specific structure of the first locking member 7 includes a first screw rod 71 and a first nut 72. The first screw rod 71 is coaxially fixedly connected or integrally formed on the rotating shaft between the base 11 and the corresponding rocker arm 21. The first nut 72 is screwed on the first screw rod 71, and the nut can abut against the base 11. When the first nut 72 is tightened on the first screw rod 71, its end face abuts against the rocker arm 21, thereby preventing the rocker arm 21 from rotating about the base 11, thereby locking the spacing of the four grounding units 1 in the horizontal direction of the vertical wires.

[0039] At least one of the four grounding units 1 has an L-shaped sleeve 9 fixedly connected to the round rod 14 or the rotating head 12, and the insulating operating rod 3 is threadedly connected to the L-shaped sleeve 9, and the length direction of the insulating operating rod 3 is parallel to the axial direction of the round rod 14. The advantage of the threaded connection between the insulating operating rod 3 and the L-shaped sleeve 9 is that it can facilitate the loading and unloading of the longer insulating operating rod 3, which is easy to carry. In addition, if the operator performs grounding operations on the overhead line on the ground without using an insulating boom truck or climbing a tower or pole, the insulating operating rod 3 should adopt a multi-section telescopic structure, which can not only provide a longer length, but also be convenient for storage and carrying.

[0040] A telescopic rod 5 is respectively arranged between the round rods 14 of two adjacent grounding units 1, that is, there are four telescopic rods 5 in total, each telescopic rod 5 is a double-section rod, including a first rod body and a second rod body that are slidably connected to each other, and for two adjacent grounding units 1 and the telescopic rod 5 between them, the two ends of the telescopic rod 5 are respectively rotatably connected with a collar 6, the rotation axis between the telescopic rod 5 and the two collars 6 is parallel, and each collar 6 is rotatably sleeved on the adjacent round rods 14, that is, the collar 6 is coaxial with the corresponding round rod 14, and no axial relative movement can be generated between the collar 6 and the corresponding round rod 14. By setting each telescopic rod 5 and collar 6, only one of the round rods 14 needs to be rotated along the horizontal axis 13, so that the round rods 14 of other grounding units 1 can be rotated synchronously with the hooks 15, and the four round rods 14 always remain parallel, that is, the four hooks 15 always remain parallel.

[0041] Among the four grounding units 1, at least one grounding unit 1 has a second locking member 8 arranged between the round rod 14 and the base 11. The second locking member 8 specifically includes a second screw 81 and a second nut 82. The second screw 81 is coaxially fixedly connected or integrally formed on the horizontal axis 13. The second nut 82 is screwed on the second screw 81. When the second nut 82 is tightened on the second screw 81, its end face can be pressed against the base 11, thereby locking the swivel head 12 and the base 11 so that the two cannot rotate, thereby locking the angle between the hook 15 and the base 11.

[0042] In this embodiment, for a single-phase two-wire line or a three-phase four-wire line, each wire is at the same horizontal height, and the round rod 14 needs to be kept perpendicular to the plane where each swing rod 21 is located. The horizontal spacing of each grounding unit 1 in the vertical direction of the wire is adjusted by adjusting the angle between adjacent swing rods 21 to adapt to the wire spacing in single-phase two-wire lines or three-phase four-wire lines of different specifications. The parallel connecting rod 22 keeps each grounding unit 1 parallel while the angle of the adjacent swing rod 21 changes, so as to adapt to the wires erected in parallel. Then the first locking member 7 is locked. If the overhead line is a three-phase four-wire line, refer to Figure 1 , Figure 4-Figure 6 , then the four grounding units 1 are simultaneously hung on the four wires through the insulating operating rod 3. If the overhead line is a single-phase two-wire line, two of the grounding units 1 are simultaneously hung on the two wires through the insulating operating rod 3, and the other two grounding units 1 are suspended in the air. If only a single wire needs to be grounded, one of the grounding units 1 is hung on the wire through the insulating operating rod 3, and the other three grounding units 1 are suspended in the air.

[0043] Also, see Figure 8 , Fig. 9 The connecting rod assemblies 2 can be folded to a substantially parallel state to close, and the insulating operating rod 3 can also be unscrewed from the L-row sleeve, thereby facilitating the storage and carrying of the grounding assembly.

[0044] For a three-phase three-wire line, the wires on both sides are at the same level, while the wire in the middle is centered but higher than the wires on both sides. Figure 10-12 , by adjusting the angle between adjacent swing rods 21, the spacing between each grounding unit 1 in the horizontal direction of the vertical wire is adjusted, so that the spacing between the first grounding unit 1 and the third grounding unit 1 is equal to the line spacing between the wires on both sides of the three-phase three-wire line, and then the first locking member 7 is locked; then, it is necessary to rotate the round rod 14 of one of the grounding units 1, adjust the angle between the round rod 14 and the plane where the swing rods 21 are located, so as to adjust the axial distance of the hooks 15 of the two adjacent grounding units 1 in the round rod 14, so that the distance is equal to the height difference between the middle wire and the wires on both sides in the three-phase three-wire line, and then the second locking member 8 is locked; finally, operate the insulating operating rod 3, the insulating rod remains in a vertical state, so that the hooks 15 of the first grounding unit 1 and the third grounding unit 1 are hung on the wires on both sides, and the hook 15 of the second grounding unit 1 located between the first grounding unit 1 and the third grounding unit 1 is hung on the middle wire, and the remaining grounding unit 1 is suspended, so as to realize the grounding of each wire in the three-phase three-wire line.

[0045] In the second embodiment provided by the present invention, compared with the first embodiment, the number of grounding units 1 is three, and the number of connecting rod assemblies 2 is two. This embodiment is suitable for grounding of three-phase three-wire lines, single-phase two-wire lines or single wires.

[0046] In the third embodiment provided by the present invention, compared with the first embodiment, the number of grounding units 1 is two, the number of connecting rod assemblies 2 is one, and the gear 4 is not required. This embodiment is suitable for grounding of single-phase two-wire lines or single wires.

[0047] In the fourth embodiment provided by the present invention, compared with the first embodiment, there is no need to configure the gear 4, and a first locking member 7 is to be set between one end of the three rocker arms 21 and the corresponding base 11, that is, the number of the first locking members 7 is to be three, and the three first locking members 7 correspond to the three rocker arms 21 respectively. Therefore, the angle between each rocker arm 21 and one of the corresponding bases 11 needs to be adjusted respectively, and locked respectively by the corresponding first locking members 7.

[0048] In the fifth embodiment provided by the present invention, compared with the first embodiment, there is no need to configure each telescopic rod 5 and the ring 6, and a second locking member 8 should be respectively provided between the round rod 14 of each grounding unit 1 and the corresponding base 11, and the angle between the round rod 14 of each grounding unit 1 and the plane where each rocker rod 21 is located needs to be adjusted respectively, and then locked respectively by the corresponding second locking member 8.

[0049] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A grounding assembly that is easy to install, characterized in that: It comprises a plurality of grounding units arranged in sequence, and connecting rod assemblies are movably arranged between adjacent grounding units, and each connecting rod assembly comprises a swing rod and a parallel connecting rod; Each grounding unit includes a base, a round rod and a hook, one end of the round rod is rotatably connected to the base along a horizontal axis, and the other end is fixedly connected to the hook, and the base is rotatably connected to the swing rod and parallel connecting rod of the adjacent connecting rod assembly respectively; The parallel connecting rods can keep the grounding units parallel while the angles of adjacent swing arms are changed, so as to adapt to the wires installed in parallel.

2. A grounding assembly that is easy to install according to claim 1, characterized in that: For each grounding unit located in the middle, a gear is coaxially connected to the base of each unit and the rotating shafts of two adjacent swing rods, the two gears are meshed, and the two gears are fixed to the corresponding swing rods.

3. A grounding assembly that is easy to install according to claim 2, characterized in that: A first locking member is arranged between the base of at least one grounding unit and the corresponding swing rod.

4. A grounding assembly that is easy to install according to claim 1, characterized in that: An insulating operating rod is arranged on the round rod of at least one grounding unit, and the length direction of the insulating operating rod is parallel to the axial direction of the round rod.

5. A grounding assembly that is easy to install according to claim 1, characterized in that: A rotating head is fixedly connected to the round rod of each grounding unit, a corresponding horizontal axis is fixedly connected to the rotating head, and the horizontal axis is rotatably connected to the base.

6. A grounding assembly that is easy to install according to claim 1 or 2, characterized in that: Telescopic rods are respectively arranged between the round rods of adjacent grounding units, and both ends of each telescopic rod are rotatably connected with sleeve rings, and each sleeve ring is rotatably sleeved on the adjacent round rods.

7. A grounding assembly that is easy to install according to claim 6, characterized in that: A second locking member is arranged between the round rod of at least one grounding unit and the base.

8. A grounding assembly that is easy to install according to claim 1, characterized in that: For any set of matched connecting rod assemblies and grounding units, the rotating shafts between the base and the swing rod and the parallel connecting rod are parallel and perpendicular to the corresponding horizontal axis.

9. A grounding assembly that is easy to install according to claim 1, characterized in that: Each grounding unit also includes a grounding wire, one end of which is conductively connected to the corresponding hook, and the other end of which is used to connect to the ground.

10. The grounding assembly that is easy to install according to claim 1, characterized in that: The number of the grounding units is four.

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