阅读说明：本技术 一种接地线夹 (Grounding wire clamp ) 是由 任彦海 孙玉欣 王凯迪 宋建斌 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种接地线夹,包括自锁线夹组件和连接在自锁线夹组件上的角度调节组件；所述自锁线夹组件通过转动销轴转动连接在角度调节组件侧部。自锁线夹组件通过自锁钩的回位保护,将导线锁死,保证线夹与导线接触牢固,在碰撞、拉扯或大风作用下也不会发生脱落,能够更加安全的保障电力检修人员开展现场作业,最大限度的降低人员触电风险；角度调节组件便于将接地线挂到耐张杆塔瓷瓶串外侧的导线上,并接地可靠,挂上导线后,其接地棒不是垂在线下,而是可以搁在杆塔横担上或搁在杆塔构件上,既方便又安全；在检修中可以使工作地点集中、所需工作班成员减少,挂接地线难度减小,所需检修费用较少,从而节省成本、安全系数提高。(The invention discloses a grounding wire clamp which comprises a self-locking wire clamp assembly and an angle adjusting assembly connected to the self-locking wire clamp assembly; the self-locking wire clamp assembly is rotatably connected to the side part of the angle adjusting assembly through a rotating pin shaft. The self-locking wire clamp assembly locks the wire through the return protection of the self-locking hook, so that the wire clamp is ensured to be firmly contacted with the wire, and the wire clamp cannot fall off under the actions of collision, pulling or strong wind, the field operation of electric power maintainers can be more safely ensured, and the electric shock risk of the maintainers is reduced to the maximum extent; the angle adjusting assembly is convenient for hanging the grounding wire on the wire outside the porcelain insulator string of the strain tower, and is reliable in grounding, and after the wire is hung, the grounding rod of the wire is not hung below the wire, but can be placed on a cross arm of the tower or a tower component, so that the wire is convenient and safe; during maintenance, work places can be centralized, required work class members are reduced, the difficulty of hanging the ground wire is reduced, required maintenance cost is low, cost is saved, and safety factor is improved.)

1. The utility model provides a ground clamp which characterized in that: the angle adjusting device comprises a self-locking wire clamp assembly and an angle adjusting assembly connected to the self-locking wire clamp assembly;

The self-locking wire clamp assembly is rotatably connected to the side part of the angle adjusting assembly through a rotating pin shaft (53).

2. A ground clamp as claimed in claim 1, wherein: the self-locking wire clamp assembly comprises a left clamping plate (11) and a right clamping plate (12) which are hinged through a first pin shaft (13), the middle parts of the left clamping plate (11) and the right clamping plate (12) are respectively provided with a left arc-shaped groove (19) and a right arc-shaped groove (20) which are mutually buckled, and the lower parts of the left clamping plate (11) and the right clamping plate (12) are vertical plates (28) which are mutually attached together;

The upper ends of the left clamping plate (11) and the right clamping plate (12) are respectively provided with a groove (22) for the insulation operation rope to penetrate through, a left pulley (17) is rotatably connected in the groove (22) of the left clamping plate (11) through a pulley pin shaft (21), a right pulley (18) is rotatably connected in the groove (22) of the right clamping plate (12) through the pulley pin shaft (21), and the left pulley (17) corresponds to the right pulley (18);

and the right clamping plate (12) is connected with a self-locking mechanism.

3. A ground clamp as claimed in claim 2, wherein: the self-locking mechanism comprises an L-shaped self-locking hook (14) and a trigger rod (15);

A first rectangular hole (26) opposite to the outer side of the right clamping plate (12) is formed in the vertical edge of the L-shaped self-locking hook (14), second rectangular holes (29) are formed in the two vertical plates (28), and a third rectangular hole opposite to the second rectangular hole (29) is formed in the right clamping plate (12);

A fixed seat (24) is fixedly arranged on the outer side of the upper part of the right clamping plate (12), the upper end of the vertical edge of the self-locking hook (14) is hinged to the fixed seat (24) through a second pin shaft (16), and the transverse edge of the self-locking hook (14) penetrates through a second rectangular hole (29);

One end of the trigger rod (15) is hinged to the inner side of the left clamping plate (11), and the other end of the trigger rod penetrates through the third rectangular hole and then is sleeved in the first rectangular hole (26).

4. a ground clamp according to claim 3, characterized in that: and a positioning column (42) for resisting the free end of the trigger rod (5) is also arranged in the first rectangular hole (26).

5. A ground clamp according to claim 4, characterized in that: the upper end of the vertical edge of the self-locking hook (14) is fixedly connected with a bending rod (25), and a rope penetrating hole for penetrating an insulating operation rope is formed in the bending rod (25).

6. A ground clamp according to claim 5, characterized in that: the angle adjusting assembly comprises a semicircular arc plate (51), a grounding fixed rod (52) and a sliding groove rod (41), wherein the grounding fixed rod (52) is rotatably connected to the middle part of the semicircular arc plate (51) through a rotating pin shaft (53), and the sliding groove rod (41) is fixed at the upper end of the grounding fixed rod (52);

The lower end of the vertical plate (28) is connected in the chute rod (41) in a sliding mode.

7. a ground clamp according to claim 6, characterized in that: the semicircular arc plate (51) is provided with positioning grooves (54) which are annularly arrayed on the outer side of the rotating pin shaft (53), and after the grounding wire is adjusted to an angle, the positioning pins are inserted into the positioning grooves (54) to keep the angle of the self-locking wire clamp assembly.

8. A ground clamp according to claim 7, characterized in that: an angle scale (55) is arranged on the semicircular arc plate (51), a transparent window (56) used for observing the angle scale (55) is arranged on the grounding fixed rod (52), and a pointer (57) for indicating an angle is fixed on the transparent window (56).

9. a ground clamp according to claim 8, characterized in that: the lower part of the grounding fixed rod (52) and the inner side of the semicircular arc plate (51) are respectively connected with a first spring (58) and a second spring (59).

10. a ground clamp according to claim 8, characterized in that: the semicircular arc plate (51) is made of insulating materials, and the grounding fixed rod (52) is a copper rod.

Technical Field

The invention relates to the technical field of safety protection of electric appliance circuits, in particular to a grounding wire clamp.

background

the grounding wire is a safety appliance for temporarily short-circuiting and grounding the power-off equipment, and has the functions of preventing the equipment from suddenly coming and preventing the adjacent high-voltage electrified equipment from generating induced voltage to harm a human body and simultaneously discharging residual charges of the power-off equipment when the power-off equipment is subjected to power-off maintenance or other work.

The traditional tongue-shaped compression type grounding wire mainly comprises a wire end clamp, an insulating operating rod, a plurality of strands of bare copper wires, a power connection end clamp and the like. The wire end clamp is a clamp connected to the grounding net or the grounding end, and a wire to be grounded is clamped in the wire clamp by spring pressure through the spring tongue piece, so that the grounding wire is reliably connected with the wire; the short circuit line is a plurality of strands of bare annealed copper wires for grounding, and a heat-shrinkable silicone rubber sleeve is sleeved outside and fastened with a wire end clamp and a grounding end clamp of the lead respectively by screws; the grounding operating rod is an insulating handle arranged on a wire clamp at the end of a wire and used for hanging and assembling and disassembling the wire clamp. The tongue-shaped compression type grounding wire is convenient to use and wide in application. However, the ground wire is unstable in connection due to the self structure of the ground wire when hung on a suspended vertical wire or in strong wind, so that the wire is easy to slip off from a wire clamp, the operation risk of maintainers is increased, and the production requirement can not be well met. Therefore, the wire end clamp of the existing short circuit grounding wire must be improved, the connection reliability and stability of the grounding wire are increased, and the occurrence of the falling-off event of the wire from the wire clamp is avoided.

the grounding wire clamps in the transformer substation generally applied at present mainly have three types: the ground wire clamp comprises a spiral line type ground wire clamp, a double-tongue tensioning type ground wire clamp and a fish-mouth wire clamp, wherein the spiral compression type ground wire clamp is simple and durable, firm in contact and wide in use. But it can only hang on the near vertical grounded conductor. Therefore, the cable can be hung on a jumper wire of a tension tower or a lead wire of a tangent tower, and when the jumper wire is overhauled, a grounding wire needs to be hung on a lead wire outside an insulator string. The included angle between the grounding rod and the outer side lead of the insulator string is too small, so that the personnel can not operate the insulator string. The compromise method is that two pairs of grounding wires are hung on the jumper wire of the tension tower, and then a grounding wire is taken down and is hung on the conducting wire outside the porcelain insulator string by a rope ladder or an insulator string climbing method. Since the technician is performing dangerous operations outside the ground wire protection range, there is violation. Even if the wire is not contacted, a sufficient safety distance cannot be ensured; the other two grounding wire clamp structures have potential safety hazards that the wire clamps are not firmly contacted with the wires and are easy to fall off due to impact or pulling; the two wire clamps adopting the bolt fastening type or other types with locking functions are completely out of service.

therefore, the current common grounding wire clamp has unreasonable structure: firstly, a straight line is formed between the wire end hook and the ground rod, and the angle between the ground clamp wire hook and the ground rod cannot be correspondingly adjusted according to the angle formed by the ground rod and the wire held by a position where a maintainer stands; secondly, the wire clamp has the potential safety hazard that the wire clamp is not firmly contacted with a wire and is easy to fall off under the action of collision, pulling or strong wind. Once the left and right clamping leaves are opened, the lead is easy to fall off from the arc-shaped clamping groove, the lead end is disconnected with the ground wire end immediately, the ground wire loses the protection function, and people are easy to get an electric shock. The reason is that the wire clamp is clamped by only two clamping leaves and has no locking function.

Therefore, it is desirable to provide a ground clip that solves the above problems.

Disclosure of Invention

the invention aims to provide a grounding wire clamp which has the characteristics of convenience in adjusting the angle between a grounding rod and a wire and stability in self-locking.

in order to achieve the purpose, the technical scheme adopted by the invention is as follows:

A grounding wire clamp comprises a self-locking wire clamp assembly and an angle adjusting assembly connected to the self-locking wire clamp assembly;

the self-locking wire clamp assembly is rotatably connected to the side part of the angle adjusting assembly through a rotating pin shaft.

As a further improvement of the invention, the self-locking wire clamp assembly comprises a left clamping plate and a right clamping plate which are hinged through a first pin shaft, the middle parts of the left clamping plate and the right clamping plate are respectively provided with a left arc-shaped groove and a right arc-shaped groove which are mutually buckled, and the lower parts of the left clamping plate and the right clamping plate are vertical plates which are mutually attached together;

The upper ends of the left clamping plate and the right clamping plate are respectively provided with a groove for the insulation operation rope to penetrate through, a left pulley is rotatably connected in the groove of the left clamping plate through a pulley pin shaft, a right pulley is rotatably connected in the groove of the right clamping plate through a pulley pin shaft, and the left pulley corresponds to the right pulley in position;

And the right clamping plate is connected with a self-locking mechanism.

as a further improvement of the invention, the self-locking mechanism comprises an L-shaped self-locking hook and a trigger rod;

a first rectangular hole opposite to the outer side of the right clamping plate is formed in the vertical edge of the L-shaped self-locking hook, second rectangular holes are formed in the two vertical plates, and a third rectangular hole opposite to the second rectangular hole is formed in the right clamping plate;

a fixed seat is fixedly arranged on the outer side of the upper part of the right clamping plate, the upper end of the vertical edge of the self-locking hook is hinged to the fixed seat through a second pin shaft, and the transverse edge of the self-locking hook penetrates through the second rectangular hole;

one end of the trigger rod is hinged to the inner side of the left clamping plate, and the other end of the trigger rod penetrates through the third rectangular hole and then is sleeved in the first rectangular hole.

as a further improvement of the invention, a positioning column which resists the free end of the trigger rod is arranged in the first rectangular hole.

as a further improvement of the invention, the upper end of the vertical edge of the self-locking hook is fixedly connected with a bending rod, and the bending rod is provided with a rope threading hole for penetrating an insulating operation rope.

as a further improvement of the invention, the angle adjusting assembly comprises a semicircular arc plate, a grounding fixed rod rotationally connected to the middle part of the semicircular arc plate through a rotating pin shaft, and a chute rod fixed at the upper end of the grounding fixed rod;

The lower end of the vertical plate is connected in the chute rod in a sliding mode.

As a further improvement of the invention, the semicircular arc plate is provided with positioning grooves which are annularly arrayed on the outer side of the rotating pin shaft, and after the grounding wire is adjusted to the angle, the positioning pins are inserted into the positioning grooves to keep the angle of the self-locking wire clamp assembly.

As a further improvement of the invention, an angle scale is arranged on the semicircular arc plate, a transparent window for observing the angle scale is arranged on the grounding fixed rod, and a pointer for indicating the angle is fixed on the transparent window.

as a further improvement of the invention, the lower part of the ground fixing rod and the inner side of the semicircular arc plate are respectively connected with a first spring and a second spring.

as a further improvement of the invention, the semi-arc plate is made of insulating materials, and the grounding fixed rod is made of a copper rod.

Compared with the prior art, the invention has the following beneficial effects:

The self-locking wire clamp assembly has the characteristics of simple structure, convenience in operation and reliability, the self-locking wire clamp assembly locks the wire through the return protection of the self-locking hook, the wire clamp is ensured to be firmly contacted with the wire, the wire clamp cannot fall off under the action of collision, pulling or strong wind, the field operation of electric power maintenance personnel can be more safely guaranteed, and the electric shock risk of the personnel is reduced to the maximum extent; the angle adjusting assembly is convenient for hanging the grounding wire on the wire outside the tension tower porcelain insulator string and is reliable in grounding, after the wire is hung, the grounding rod of the wire does not hang down on the wire but can be placed on the tower cross arm or on a tower component, and a maintainer can stand on the cross arm of the tension tower to operate during dismantling, so that the operation is convenient and safe; during maintenance, work places can be centralized, required work class members are reduced, a working face is small, overall process control is easy to carry out, the difficulty of hanging the ground wire is reduced, required maintenance cost is low, and therefore cost is saved, and safety factor is improved.

Drawings

FIG. 1 is a schematic structural view of a self-locking wire clamp assembly of the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fourth embodiment of the present invention;

fig. 6 is a schematic structural view of an angle adjustment state of the four-self-locking wire clamp assembly according to the embodiment of the invention.

In the drawings, there is shown in the drawings,

11 left splint, 12 right splint, 13 first pin shaft, 14 self-locking hook, 15 trigger lever, 16 second pin shaft, 17 left pulley, 18 right pulley, 19 left arc groove, 20 right arc groove, 21 pulley pin shaft, 22 slotted, 23 connection lifting lug, 24 fixing seat, 25 bending rod, 26 first rectangular hole, 27 positioning column, 28 vertical plate, 29 second rectangular hole, 30 inserting plate, 41 sliding groove rod, 51 semicircular plate, 52 grounding fixing rod, 53 rotation pin shaft, 54 positioning groove, 55 angle scale, 56 transparent window, 57 pointer, 58 first spring, 59 second spring.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting.

Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.