CN212085259U

CN212085259U - Grounding wire clamp

Info

Publication number: CN212085259U
Application number: CN202020030985.3U
Authority: CN
Inventors: 赖建防; 吕伟宏; 赵成宝
Original assignee: Ningbo Tianhong Power Appliance Co Ltd
Current assignee: Ningbo Tianhong Power Appliance Co Ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-12-04
Anticipated expiration: 2030-01-08

Abstract

The invention discloses a ground clamp which comprises a hook assembly, a fan-shaped clamping part and a locking block, wherein the fan-shaped clamping part is arranged on the hook assembly; the rotating axis of the clamping part is rotatably arranged on the connecting arm of the hook assembly, and the locking block is slidably arranged in the connecting arm; the clamping part rotates the axle center and is connected with the arm that stretches out, stretch out the arm with the contained angle of centre gripping wire has between the clamping part, the clamping part corotation back deuterogamy couple subassembly centre gripping the wire makes it can't break away from contained angle department, the lock block blocks the clamping part restriction its rotation. The invention provides a grounding wire clamp which has the characteristics of simple structure, sensitive action and easiness in operation and solves the risk that the conventional grounding wire clamp possibly slides out of a lead.

Description

Grounding wire clamp

Technical Field

The invention belongs to the technical field of electric power safety appliances, and relates to a ground wire clamp.

Background

With the continuous development of power grids and the requirement of safe operation modes of lines, the power failure maintenance operation on the high-voltage transmission line is more and more frequent. When the line is overhauled, according to the requirements of electric power safety work rules and standardized operation flow, the short-circuit grounding wire is hung immediately after electricity is tested, and then the defect treatment work is carried out.

The grounding wire is a safety tool for temporarily short-circuiting and grounding power-off equipment, is an important part specially used for temporarily short-circuiting and grounding power transmission conductors in power failure, and has the functions of preventing equipment from suddenly coming and preventing the damage of induced voltage generated by adjacent high-voltage electrified equipment to human bodies and simultaneously discharging residual charges of the power-off equipment when the high-voltage equipment is subjected to power failure maintenance or other work. The safety of power failure maintenance of the high-voltage transmission line can be guaranteed only by the reliable performance of the high-voltage transmission line. The grounding wire mainly comprises three parts: ground terminal, wire and fastener.

The existing ground wire setting mode is mostly established by adopting a double-person frame, the method needs two persons to cooperate, one person holds a ground wire one-phase wire clamp, and the other person holds a ground wire gun to aim at a metal head at the lower end of a hook-type clamp, if a guardian cannot participate in the work according to the requirements of safety regulations, three persons are needed to operate each time the ground wire is set, and the work is complicated and the efficiency is low.

The current short circuit grounding wire clamp structure has serious defects, great potential safety hazards and low work complexity and efficiency.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the grounding wire clamp which has the characteristics of simple structure, sensitive action and easiness in operation, and solves the risk that the conventional grounding wire clamp possibly slides out of a wire.

In order to solve the technical problem, the invention is solved by the following technical scheme: a grounding wire clamp comprises a hook assembly, a fan-shaped clamping part and a locking block; the rotating axis of the clamping part is rotatably arranged on the connecting arm of the hook assembly, and the locking block is slidably arranged in the connecting arm; the clamping part rotates the axle center and is connected with the arm that stretches out, stretch out the arm with the contained angle of centre gripping wire has between the clamping part, the clamping part corotation back deuterogamy couple subassembly centre gripping the wire makes it can't break away from contained angle department, the lock block blocks the clamping part restriction its rotation.

In the above technical solution, preferably, the arc surface of the clamping portion is provided with a ratchet portion, the front end of the locking block is provided with an inclined nozzle, and the inclined nozzle is clamped into the ratchet portion to prevent the clamping portion from reversing.

In the above technical solution, preferably, the hook assembly is rotatably provided with a leg of the U-shaped ring, the top end of the U-shaped ring is connected with a spring, the other end of the spring is connected with the locking block, and under the action of the spring, the top end of the U-shaped ring and the locking block are close to each other.

In the above technical scheme, preferably, fixedly connected with connects the end in the linking arm, it is provided with the pull ring subassembly to connect the end lateral wall, it is provided with the locking round pin to remove in the pull ring subassembly, the locking piece lateral wall is provided with the locking hole, thereby the locking round pin inserts the downthehole restriction of locking the removal of locking piece. When the locking hole locking block is locked, the distance between the end part of the locking hole locking block and the root part of the ratchet part is larger than the height of the ratchet.

In the above technical scheme, preferably, the connection end is connected with a holding rod, and the holding rod is convenient for a worker to clamp the ground clamp on the wire; the tail end of the locking block is connected with a guide rod, and the tail end of the guide rod is grounded.

In the above technical solution, preferably, the holding rod is made of an insulating rod.

In the above technical solution, preferably, the tail end of the connection end is provided with an opening hook, the tail end of the locking block is connected with a guide rod, the guide rod is provided with an annular part, and the annular part is sleeved on the opening hook; and the tail end of the guide rod is grounded.

In the above technical solution, preferably, the hook assembly includes a positioning bolt provided with an inner hole, the positioning bolt is screwed into the connecting end, a thin rod is provided at the tail end of the locking pin, the thin rod penetrates through the positioning bolt and is provided with a circular ring at the end in a rotating manner, a return spring is sleeved on the thin rod, and the return spring is used for ejecting the locking pin.

In the above technical scheme, preferably, the hook assembly includes two hook plates, the hook plates are connected into a whole by bolts, a sleeve is sleeved on the bolts, and the two hook plates are separated from each other by the sleeve, so that a gap is formed between the two hook plates, and the clamping portion, the locking block and the connecting end are convenient to install.

In the above technical scheme, preferably, the hook plate is provided with a sliding groove in the locking block region, the locking block is provided with a limit pin, and the limit pin is clamped into the sliding groove to limit the moving force of the locking block.

The invention provides a grounding wire clamp which has the characteristics of simple structure, sensitive action and easiness in operation and solves the risk that the conventional grounding wire clamp possibly slides out of a lead.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the structure of the present invention.

FIG. 2 is a schematic diagram of the connection of the components of the structure of the present invention.

FIG. 3 is a schematic diagram of the structure two of the present invention.

FIG. 4 is a schematic diagram of the connection between two parts of the structure of the present invention.

Fig. 5 is a schematic diagram showing the cooperation of the components in the operation of the present invention.

Figure 6 is a schematic view of the tab assembly of the present invention and its peripheral structure.

Fig. 7 is a schematic view of the hook assembly of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present disclosure, all other embodiments obtained by a person skilled in the art without creative efforts are within the scope of the present disclosure.

As shown in fig. 1 to 2, a ground clamp comprises a hook component 1, a fan-shaped clamping part 3 and a locking block 4; the rotating axis of the clamping part 3 is rotatably arranged on the connecting arm 101 of the hook assembly 1, and the locking block 4 is slidably arranged in the connecting arm 101; clamping part 3 rotates the axle center and is connected with and stretches out arm 32, stretch out arm 32 with the contained angle of centre gripping wire 10 has between the clamping part 3, clamping part 3 corotation back is mated again couple subassembly 1 centre gripping wire 10 makes it can't break away from the contained angle department, locking piece 4 blocks clamping part 3 restricts its rotation.

The arc surface of the clamping part 3 is provided with a ratchet part 31, the front end of the locking block 4 is provided with an inclined nozzle 42, and the inclined nozzle 42 is clamped in the ratchet part 31 so as to prevent the clamping part 3 from reversely rotating.

Two supporting legs of a U-shaped ring 2 are rotatably arranged on an opening arm 102 on the hook assembly 1, the top end of the U-shaped ring 2 is attached to the outer wall of a connecting arm 101 and is connected with a spring 21, the other end of the spring 21 is connected with the locking block 4, and under the action of the spring 21, the top end of the U-shaped ring 2 and the locking block 4 are close to each other.

The connecting end 5 is fixedly connected in the connecting arm 101, a pull ring assembly 6 is arranged on the side wall of the connecting end 5, a locking pin 62 is arranged in the pull ring assembly 6, a locking hole 44 is formed in the side wall of the locking block 4, and the locking pin 62 is inserted into the locking hole 44 so as to limit the movement of the locking block 4. When the locking hole locking block 4 is locked, the distance from the end to the root of the ratchet part 31 is larger than the height of the ratchet.

The connecting end 5 is connected with a holding rod 51, and the holding rod 51 is convenient for a worker to clamp the grounding wire clamp on the wire 10; the tail end of the locking block 4 is connected with a guide rod 43, and the tail end of the guide rod 43 is grounded.

The holding rod 51 is made of an insulating rod.

As shown in fig. 2 to 7, an opening hook 52 is arranged at the tail end of the connecting end 5, a guide rod 43 is connected to the tail end of the locking block 4, an annular portion 431 is arranged on the guide rod 43, and the annular portion 431 is sleeved on the opening hook 52; the tail end of the guide rod 43 is grounded.

The hook assembly 1 comprises a positioning bolt 61 provided with an inner hole, the positioning bolt 61 is screwed into the connecting end 5, a thin rod 63 is arranged at the tail end of the locking pin 62, the thin rod 63 penetrates through the positioning bolt 61 and is rotatably provided with a circular ring 64 at the end, a return spring 65 is sleeved on the thin rod 63, and the return spring 65 is used for ejecting the locking pin 62.

The hook assembly 1 comprises two hook plates 11, the hook plates 11 are connected into a whole through bolts 13, sleeves 12 are sleeved on the bolts 13, the two hook plates 11 are separated from each other through the sleeves 12, and therefore gaps are formed between the two hook plates 11, the clamping portion 3, the locking block 4 and the connecting end 5 are convenient to install.

The hook plate 11 is provided with a sliding groove 14 in the area of the locking block 4, the locking block 4 is provided with a limiting pin 41, and the limiting pin 41 is clamped into the sliding groove 14 to limit the moving road strength of the locking block 4.

The device is in a state before it clamps the wire 10, as shown in fig. 1-4. At this time, the tip of U-shaped ring 2 is close to lock block 4 by spring 21, but is prevented from further rotation by the outer wall of the link arm. The opening of the included angle of the clamping part 3 faces the opening of the hook component 1, and the lead 10 is positioned at the opening of the hook component 1.

Referring to fig. 6, before the clamping operation is required, the ring 64 is pulled to disengage the locking pin 62 from the locking hole 44. At this time, the lock block 4 moves toward the grip portion 3 by the spring 21 to be caught in the ratchet portion 31, thereby restricting the rotational direction of the grip portion 3.

When the clamping operation is carried out, the grounding wire clamp is buckled on the lead 10 and moves downwards, and the lead 10 is pressed in the included angle, so that the clamping part 3 rotates. During movement of the earth clamp, the conductor 10 contacts the U-shaped ring 2 and causes it to rotate, thereby stretching the spring 21.

Referring to fig. 5, the state after the clamping operation is completed is shown, and at this time, the wire 10 is completely limited by the space enclosed by the clamping portion 3, the projecting arm 32 and the hooking member 1 and cannot move. The ratchet portion 31 is caught by the lock piece 4, so that the grip portion 3 cannot be reversely rotated, that is, the wire 10 cannot be disengaged. Wire 10 forces U-ring 2 to rotate, stretching spring 21, so that locking block 4 is forced by the spring force of spring 21 to be tightly pressed into ratchet portion 31. Thus, the locking work is completed. At this time, the wire 10 cannot be separated from the space surrounded by the grip portion 3, the projecting arm 32 and the hooking member 1 without manual intervention, and thus safety is improved. And the clamping work can be completed by one person without the help of a second person. Even if the guardians are required according to the requirements of safety regulations and cannot participate in the work, only three persons are needed to operate the ground wire erection at each time, the work of the guardians is reduced, more monitoring works can be completed, the number of workers is further reduced, and the efficiency is improved.

To complete the unlocking, the locking block 4 is required to slide relative to the hook plate 11, so that the ratchet portion 31 is not blocked, and thus the clamping portion 3 can be smoothly turned over, and the lead 10 can be separated from the ground clamp.

As shown in fig. 1 to 2, when unlocking, a worker needs to hold the holding rod 51 with his hand and push it upwards, and the guide rod 43 cannot move upwards after being grounded, so that the locking block 4 can slide relative to the hook plate 11, and the ratchet portion 31 is no longer clamped, and thus the clamping portion 3 can be smoothly turned over, and the wire 10 can be separated from the grounding clamp.

As shown in fig. 2 to 4, when the unlocking is performed, a worker needs to pull the guide rod 43 downwards, and the hook plate 11 is clamped on the wire 10 and cannot move, so that the locking block 4 slides relative to the hook plate 11, and the ratchet part 31 is not clamped, and thus the clamping part 3 can be smoothly turned over, and the wire 10 can be separated from the grounding wire clamp.

In order to increase the locking effect, a locking hole may be further provided on the side wall of the locking block 4. When the locking of the conductor 10 in the space enclosed by the clamping part 3, the projecting arm 32 and the hook assembly 1 is completed, the locking pin 62 is inserted into the locking hole, so that the locking block 4 can not move at all, and the locking effect is realized. In this case, when the unlocking is to be performed, the next operation can be performed only by first pulling out the lock pin 62.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a ground clamp which characterized in that: comprises a hook component (1), a fan-shaped clamping part (3) and a locking block (4); the rotating axis of the clamping part (3) is rotatably arranged on a connecting arm (101) of the hook assembly (1), and the locking block (4) is slidably arranged in the connecting arm (101); clamping part (3) rotation axle center is connected with and stretches out arm (32), stretch out arm (32) with the contained angle that has centre gripping wire (10) between clamping part (3), behind clamping part (3) corotation cooperate again couple subassembly (1) centre gripping wire (10) make it can't break away from the contained angle department, lock block (4) block clamping part (3) restriction its rotation.

2. A ground clamp as claimed in claim 1, wherein: the arc surface of the clamping part (3) is provided with a ratchet part (31), the front end of the locking block (4) is provided with an inclined nozzle (42), and the inclined nozzle (42) is clamped into the ratchet part (31) so as to prevent the clamping part (3) from reversing.

3. A ground clamp as claimed in claim 2, wherein: the hook assembly (1) is provided with a supporting leg of a U-shaped ring (2) in a rotating mode, the top end of the U-shaped ring (2) is connected with a spring (21), the other end of the spring (21) is connected with a locking block (4), and under the action of the spring (21), the top end of the U-shaped ring (2) and the locking block (4) are close to each other.

4. A ground clamp according to claim 3, characterized in that: fixedly connected with connects end (5) in linking arm (101), connect end (5) lateral wall and be provided with pull ring subassembly (6), it is provided with locking round pin (62) to remove in pull ring subassembly (6), locking piece (4) lateral wall is provided with locking hole (44), thereby locking round pin (62) insert thereby restriction in locking hole (44) the removal of locking piece (4).

5. A ground clamp according to claim 4, characterized in that: the connecting end (5) is connected with a holding rod (51), and the holding rod (51) is convenient for a worker to clamp the grounding wire clamp on the lead (10); the tail end of the locking block (4) is connected with a guide rod (43), and the tail end of the guide rod (43) is grounded.

6. A ground clamp according to claim 5, characterized in that: the holding rod (51) is made of an insulating rod.

7. A ground clamp according to claim 4, characterized in that: an opening hook (52) is arranged at the tail end of the connecting end head (5), a guide rod (43) is connected to the tail end of the locking block (4), an annular part (431) is arranged on the guide rod (43), and the annular part (431) is sleeved on the opening hook (52); and the tail end of the guide rod (43) is subjected to grounding treatment.

8. A ground clamp according to claim 4, characterized in that: the hook assembly (1) comprises a positioning bolt (61) with an inner hole, the positioning bolt (61) is screwed into the connecting end (5), a thin rod (63) is arranged at the tail end of the locking pin (62), the thin rod (63) penetrates through the positioning bolt (61) and is provided with a circular ring (64) in a rotating mode at the end portion, a reset spring (65) is sleeved on the thin rod (63), and the reset spring (65) is used for ejecting the locking pin (62).

9. A ground clamp according to any of claims 4 to 8, wherein: couple subassembly (1) includes two couple boards (11), couple board (11) utilize bolt (13) to connect into whole, the cover is equipped with sleeve (12) on the bolt (13), sleeve (12) are with two couple boards (11) alternate segregation for thereby it installs to have the clearance between the two clamping part (3) locking piece (4) with connect end (5).

10. A ground clamp as claimed in claim 9, wherein: the hook plate (11) is provided with a sliding groove (14) in the locking block (4) region, the locking block (4) is provided with a limiting pin (41), and the limiting pin (41) is clamped into the sliding groove (14) to limit the moving road strength of the locking block (4).