CN205069917U - High pressure earth clamp - Google Patents

Abstract

The utility model discloses a high-voltage grounding clamp, which comprises a main body part and an auxiliary clamping device. The main part comprises a conductor clamp, a rod body, and a grounding wire clamp handle connected in sequence. The auxiliary clamping device comprises a joint cap and an auxiliary clamping device. Taper sleeve clamping assembly, the top of the joint cap is provided with a through hole, the ground wire clamp handle is inserted into the joint cap through the through hole, the taper sleeve clamping assembly clamps the ground wire clamp handle, and the conductor clamp includes The fixed clip and the movable clip, the top of the rod body is provided with a drive structure that drives the movable clip and the fixed clip to clamp, the rotation of the ground wire clamp handle drives the rod body to rotate, and the drive structure makes the movable clip rotate through the rod body. The clip is clamped or loosened with the fixed clip. The utility model reduces the installation difficulty of the grounding clamp, and can monitor the torsion torque through the torque wrench to indirectly obtain the clamping condition of the wire clamp, thereby ensuring the reliable connection between the grounding clamp and the bus bar or transmission line.

Description

A high voltage grounding clamp

technical field

The utility model relates to a grounding wire hanging device, in particular to a high-voltage grounding wire clip.

Background technique

Portable short-circuit grounding wires are widely used in power systems and are necessary devices to ensure the personal safety of power production and maintenance personnel. When the voltage is induced, the staff will get an electric shock. The short-circuit grounding wire is mainly composed of grounding terminal clamps, grounding wires, conductor terminal clamps, and insulated operating handles, among which the conductor terminal clamp is the key. At present, the wire terminal clamps commonly used for short-circuit grounding wires have defects such as difficult assembly and disassembly, unreliable connection with transmission lines, and poor stability.

Utility model content

The technical problem to be solved by the utility model is to provide a high-voltage grounding clamp, which facilitates the installation of the grounding clamp.

In order to solve the above technical problems, the utility model adopts the following technical scheme: a high-voltage grounding clamp, including a main body and an auxiliary clamping device. The auxiliary clamping device includes a joint cap and a taper sleeve clamping assembly, the top of the joint cap is provided with a through hole, the ground wire clamp handle is inserted into the joint cap through the through hole, and the taper sleeve clamping assembly clamps the ground wire clamp The handle is clamped, the conductor clip includes a fixed clip and a movable clip, and the top of the rod body is provided with a drive structure that drives the movable clip and the fixed clip to clamp, and the rotation of the grounding wire clamp handle drives the rod body to rotate, through The rod body rotates, and the driving structure clamps or loosens the movable clip and the fixed clip.

Preferably, the taper sleeve clamping assembly includes an inner taper sleeve and an outer taper sleeve, the inner hole of the outer taper sleeve is provided with an inner taper surface, the outer surface of the inner taper sleeve is provided with an outer taper surface, and the outer taper The tapered surface is slidingly matched with the internal tapered surface, the inner hole of the joint cap is provided with an internal thread, and the outer surface of the external tapered sleeve is provided with an external thread, and the internal thread is engaged with the external thread.

Preferably, the joint cap and the outer taper sleeve are made of carbon steel, and the inner taper sleeve is made of polytetrafluoroethylene.

Preferably, the driving structure includes a screw at the top of the rod body, and the fixed clip is provided with a screw hole, and the screw is threadedly connected with the screw hole, and the rod body slides axially while rotating and drives the movable clip to move.

Preferably, the driving structure includes a gear at the top of the rod body and a rack connected to the movable clip, and the rotation of the rod body drives the rack to slide and drives the movable clip to move.

After the utility model adopts the above-mentioned technical scheme, the ground wire clamp can realize the clamping and loosening of the wire clamp by using the torque wrench by adding the auxiliary clamping device, which reduces the installation difficulty of the ground clamp, and can be tightened by torque The wrench monitors the torsional torque and indirectly obtains the holding condition of the wire clamp, which ensures the reliable connection between the grounding clamp and the busbar or transmission line.

The beneficial effects of the utility model are:

1. The interference fit between the inner taper sleeve and the handle of the grounding clamp produces great friction on the outer ring surface of the handle, which ensures the reliability of the connection;

2. The cylindrical surface structure with parallel chord section of the joint cap and the outer cone sleeve can be easily connected with a torque wrench to form a transmission mechanism, which can significantly reduce the installation difficulty of the grounding clamp and improve the reliability of the connection between the grounding clamp and the busbar or transmission line It can also monitor the clamping state of the wire clamp, which improves the safety;

3. On the basis of solving practical problems, the utility model also has the advantages of simple structure and low manufacturing cost.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

Fig. 1 is a longitudinal sectional structural diagram of the auxiliary clamping device in Embodiment 1 of the utility model;

Fig. 2 is a top view of the auxiliary clamping device in Embodiment 1 of the utility model;

Fig. 3 is a bottom view of the auxiliary clamping device in Embodiment 1 of the utility model;

Fig. 4 is a schematic structural view of the main body in Embodiment 1 of the utility model;

Fig. 5 is a partial cross-sectional structure diagram of the main body in Embodiment 1 of the utility model;

Fig. 6 is a schematic diagram of the cooperating structure of the main conductor clip and the driving structure in Embodiment 2 of the present invention.

detailed description

Embodiment 1, as shown in Figures 1 to 5, a high-voltage grounding clamp includes a main body and an auxiliary clamping device 1, the main body includes a conductor clamp 3 and an operating rod 2 connected in sequence, and the operation The rod 2 includes a rod body 22 and a ground wire clamp handle 21. The auxiliary clamping device 1 includes a joint cap 11 and a taper sleeve clamping assembly. The top of the joint cap is provided with a through hole, and the ground wire clamp handle 21 is inserted through the through hole. The connector cap 11, the taper sleeve clamping assembly clamps the grounding wire clamp handle 21.

The clamping assembly of the taper sleeve includes an inner taper sleeve 13 and an outer taper sleeve 12, the inner hole of the outer taper sleeve is provided with an inner taper surface, and the outer surface of the inner taper sleeve is provided with an outer taper surface, and the outer taper surface and Slip fit on inner cone. The taper of the inner taper sleeve 13 and the outer taper sleeve 12 are the same, and the conical bottom surface of the inner taper sleeve 13 protrudes from the outer taper sleeve 12, and fits with the inner top surface of the joint cap 11. The inner ring surface of the inner taper sleeve 13 is connected to the wire The outer ring surface of the clip handle 21 is interference fit.

The inner hole of the joint cap is provided with an internal thread, the outer surface of the outer tapered sleeve is provided with an external thread, and the internal thread is engaged with the external thread. Wherein, the joint cap and the outer taper sleeve are made of carbon steel with good structural strength and wear resistance, and the inner taper sleeve is made of polytetrafluoroethylene to facilitate deformation and clamp the handle of the grounding clamp.

The through hole at the top of the joint cap is located at the center point of the top of the joint cap, and is a circular hole, through which the handle of the ground wire clamp to be clamped can pass through and fit with the through hole. The outer surface of the outer taper sleeve is a cylindrical surface with a pair of parallel chord sections, and the outer surface of the joint cap is a cylindrical surface with a pair of parallel chord sections, and the two dimensions are different to facilitate the clamping of the torque wrench.

The action of the auxiliary clamping device is: insert the grounding wire clamp handle 21 into the inner tapered sleeve 13 through the through hole on the top of the joint cap 11, and fit the inner ring surface of the inner tapered sleeve 13, and then tighten the joint cap 11 and the outer tapered sleeve 12, the inner taper sleeve 13 is squeezed downward, and the grounding clamp handle 21 can be clamped by compressing the inner taper sleeve 13 .

The conductor clip 3 includes a fixed clip 31 and a movable clip 32. The top of the rod body is provided with a driving structure that drives the movable clip and the fixed clip to clamp. The driving structure makes the movable clip 32 and the fixed clip 31 clamp or loosen.

Wherein, the driving structure includes a screw rod 23 at the top of the rod body. The fixed clip is provided with a screw hole, and the screw rod is threadedly connected with the screw hole. When the rod body rotates, it slides axially and drives the movable clip to move. The fixed clip 31 is a Z-shaped structure, including an upper horizontal section 311, a vertical section 312, and a lower horizontal section 313. The screw rod 23 is screwed into the threaded hole of the lower horizontal section 313, and the movable clip 32 is movably nested in the vertical section. On section 312, when the screw moves upwards, the movable clip is driven to move upward and clamped with the upper horizontal section. When the screw goes down, the movable clip slides down under the action of gravity. It is equipped with an I-shaped structure and sliding fit with the chute.

The actual application action after the clamping device clamps the handle is: the torque wrench rotates the joint cap 11 or the outer cone sleeve 12, that is, rotates the grounding clamp handle 21, compresses or loosens the busbar or wire, and at the same time monitors the grounding through the torque wrench Clip clamping situation.

Embodiment 2, as shown in Figure 6, differs from Embodiment 1 in that the structure of the conductor clip and the drive structure is different, wherein the drive structure includes a gear at the top of the rod body and a rack connected to the movable clip, and the rod body rotates the drive gear The bar slides and drives the action of the movable clip. Specifically, the movable clip 32 is a Z-shaped structure, including an upper vertical section 321, a horizontal section 322, and a lower vertical section 323; the fixed clip 31 is an L-shaped structure, and the horizontal section 322 and the lower vertical section 323 are connected Slip fit.

Claims (5)

1. A high-voltage grounding clamp, comprising a main body and an auxiliary clamping device, the main body comprising a conductor clamp, a rod body, and a grounding clamp handle connected in sequence, wherein the auxiliary clamping device includes a joint cap And the taper sleeve clamping assembly, the top of the joint cap is provided with a through hole, the ground wire clamp handle is inserted into the joint cap through the through hole, the taper sleeve clamping assembly clamps the ground wire clamp handle, and the conductor clamp It includes a fixed clip and a movable clip. The top of the rod body is provided with a drive structure that drives the movable clip and the fixed clip to clamp. The rotation of the ground wire clamp handle drives the rod body to rotate. Through the rotation of the rod body, the drive structure makes The movable clip is clamped or loosened with the fixed clip. 2. A high-voltage grounding clamp according to claim 1, wherein the taper sleeve clamping assembly includes an inner taper sleeve and an outer taper sleeve, and the inner hole of the outer taper sleeve is provided with an inner taper surface, The outer surface of the inner tapered sleeve is provided with an outer tapered surface, the outer tapered surface and the inner tapered surface are slidingly fitted, the inner hole of the joint cap is provided with internal threads, and the outer surface of the outer tapered sleeve is provided with external threads , the internal thread meshes with the external thread. 3. A high-voltage grounding clamp according to claim 2, characterized in that: the joint cap and the outer tapered sleeve are made of carbon steel, and the inner tapered sleeve is made of polytetrafluoroethylene. 4. A high-voltage grounding clamp according to claim 2, characterized in that: the driving structure includes a screw at the top of the rod body, a screw hole is provided on the fixing clip, the screw rod is threadedly connected with the screw hole, and the rod body While rotating, it slides axially and drives the movable clip to move. 5. A high-voltage grounding clamp according to claim 2, characterized in that: the driving structure includes a gear at the top of the rod body and a rack connected to the movable clip, and the rotation of the rod drives the rack to slide and drives the movable clip action.