CN203911008U - Ground wire clamp - Google Patents

Abstract

The utility model discloses a ground wire clamp which comprises a type E chuck and an operating lever, wherein the type E chuck comprises a column, an upper crossbeam, a lower crossbeam and a movable clamping plate. The upper crossbeam and the lower crossbeam are respectively fixed to the upper and lower ends of the column, and one ends of the movable clamping plate is slidingly connected to the column and is liftable along the column. The lower crossbeam is provided with a vertical screwed hole, and the top end of an operating lever is connected with a screw matching with the screwed hole. The top end of the screw is connected with the lower surface of the movable clamping plate after passing through the screwed hole, and a clamping area is arranged between the upper surface of the movable clamping plate and the upper crossbeam. The outer end portion of the upper crossbeam is provided with a downwardly extending hook portion, and the distance between the hook portion and the column is slightly greater than the length of the movable clamping plate. The length of the hook portion is 0.3-0.5 times of the distance between the upper crossbeam and the lower crossbeam. The hook portion prevent falling off of the type E chuck from a device due to rotation of the operation rod, and the work efficiency and safety coefficient are improved.

Description

A ground clamp

technical field

The utility model relates to the field of electric facilities, in particular to a grounding clamp.

Background technique

In the power system, in order to prevent accidental current on equipment or lines that have been powered off, a grounding wire must be connected to the equipment or lines to introduce the unexpected current into the ground, thereby ensuring the personal safety of the staff. The grounding wire is connected to the equipment or line through the grounding wire clamp. At present, the grounding wire clamp uniformly distributed by Jiangsu Electric Power Company is composed of an E-shaped clamp and an operating rod. The upper and lower beams of the E-shaped clamp are fixedly connected to the column respectively, and the middle beam There are matching slide rails and chute on the column respectively, through which the column can be lifted and lowered, and a vertical threaded hole is provided on the lower beam, and the top of the operating rod is connected with a screw that matches the threaded hole, and the top of the screw After passing through the threaded hole, it is connected to the lower surface of the movable splint. The clamping area is between the upper surface of the movable splint and the upper beam. When installing the grounding wire, the staff hangs the upper beam on the equipment or line, turns the operating rod, and passes through the screw. Push the movable splint upwards until the movable splint and the upper beam clamp the equipment or lines; during the installation process, there is only friction between the upper beam of the E-type chuck and the equipment or lines due to gravity, when the staff rotates and operates When the force of the rod is greater than the frictional force, the E-type chuck will also rotate with the operating rod, and it is easy to fall off from the equipment or the line. The staff must re-hang the upper beam. When the distance between the clamping areas is small, it is very difficult to re-suspend. , It is often necessary to reversely rotate the operating lever to expand the clamping area. In the installation process of a grounding wire, it is often repeated several times, so that the installation of the grounding wire takes about 8 minutes on average, which consumes a lot of physical strength for the staff and low efficiency; In addition, when the equipment or lines are relatively dense, the E-type clamp will fall off and easily touch the nearby live equipment or lines. The E-type clamp and the grounding wire connected to the E-type clamp are both good conductors, and it is easy to cause electric shock Accidents, low safety factor.

Contents of the invention

The technical problem to be solved by the utility model is to provide a grounding wire clamp, which can solve the problem that only the friction force generated by gravity between the upper beam of the existing grounding wire clamp and the equipment or line, the chuck is easy to fall off, resulting in the installation work efficiency Low and low safety factors.

The utility model is realized through the following technical solutions:

A grounding clamp, including an E-shaped chuck and an operating rod. The E-shaped chuck is composed of a column, an upper beam, a lower beam and a movable splint. The upper beam and the lower beam are respectively fixedly connected to the upper and lower sides of the column. One end of the movable splint is slidably connected to the column, and can be lifted up and down along the column. The lower beam is provided with a vertical threaded hole, and the top end of the operating rod is connected with a screw matching the threaded hole. After the threaded hole, it is connected with the lower surface of the movable splint. There is a clamping area between the upper surface of the movable splint and the upper beam. The outer end of the upper beam is provided with a hook extending downward. The hook and the column The spacing is slightly greater than the length of the movable splint, and the length of the hook is 0.3 to 0.5 times the spacing between the upper beam and the lower beam.

The material of the hook is the same as that of the upper beam of the E-type chuck, and the hook and the upper beam are connected as a whole by welding or bonding or integral casting or screw connection or clamping.

The column is provided with a vertical slide rail, and one end of the movable splint is provided with a chute matching the slide rail.

The column, the upper beam and the lower beam of the E-type chuck are integrally cast and formed.

Compared with the prior art, the utility model has the following advantages:

1. By setting the hook to prevent the E-type chuck from falling off from the equipment or line due to the rotation with the operating lever, it greatly reduces the difficulty of installing the grounding clamp and improves work efficiency. At the same time, it avoids accidental contact with other live equipment due to the E-type chuck falling off Potential safety hazards caused by or lines, improve the safety factor;

Two, the structure is simple, the cost is low, the implementation is convenient, and the effect is remarkable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

A ground clamp as shown in Figure 1 includes an E-shaped chuck and an operating rod 6. The E-shaped chuck is composed of a column 3, an upper beam 1, a lower beam 4 and a movable splint 2. The upper beam 1 , the lower beam 4 are respectively fixedly connected to the upper and lower ends of the column 3, the column 3, the upper beam 1, and the lower beam 4 of the E-shaped chuck are integrally cast, and the column 3 is provided with a vertical slide rail 8. One end of the movable splint 2 is provided with a chute matching the slide rail 8, the movable splint 2 is slidably connected to the column 3, and can be raised and lowered along the column 3, and the lower beam 4 is provided with a vertical threaded hole, The top end of the operating rod 6 is connected with a screw rod 5 matching the threaded hole, and the top end of the screw rod 5 passes through the threaded hole and is connected with the lower surface of the movable splint 2, and the upper surface of the movable splint 2 and the upper beam 1 are clamped. The outer end of the upper beam 1 is provided with a downwardly extending hook 7, and the distance between the hook 7 and the column 3 is slightly greater than the length of the movable splint 2, and the length of the hook 7 is the length of the upper beam. 1 and 0.3 to 0.5 times the distance between the lower beam 4.

The material of the hook portion 7 is the same as that of the upper beam 1 of the E-type chuck, the hook portion 7 is provided with a through hole, and the upper beam 1 is provided with a threaded hole, and the bolt passed through the through hole and connected to the threaded hole The clamping connection is integrated.

Claims (4)

1. an earthing clamp, comprise E type chuck and action bars (6), described E type chuck is by column (3), entablature (1), sill (4) and ambulatory splint (2) composition, described entablature (1), sill (4) is fixedly connected on respectively on column (3), lower two ends, described ambulatory splint (2) one end is slidably connected to column (3), can be along column (3) lifting, described sill (4) is provided with vertical screwed hole, described action bars (6) top is connected with the screw rod (5) mating with screwed hole, described screw rod (5) top is connected with the lower surface of ambulatory splint (2) through after screwed hole, between described ambulatory splint (2) upper surface and entablature (1), it is clamp area, it is characterized in that: the outer end of described entablature (1) is provided with the hook portion (7) to downward-extension, the spacing of described hook portion (7) and column (3) is slightly larger than the length of ambulatory splint (2), the length of described hook portion (7) is entablature (1) and sill (4) spacing 0.3 ~ 0.5 times.

2. a kind of earthing clamp as claimed in claim 1, it is characterized in that: the material of described hook portion (7) is identical with E type chuck entablature (1), described hook portion (7) and entablature (1) are by welding or bonding or integrally casting moulding or be threaded or the mode that clamps connects as one.

3. a kind of earthing clamp as claimed in claim 1, is characterized in that: described column (3) is provided with vertical slide rail (8), and described ambulatory splint (2) one end is provided with the chute mating with slide rail (8).

4. a kind of earthing clamp as claimed in claim 1, is characterized in that: the column (3) of described E type chuck, entablature (1), sill (4) are integrated casting.