CN204858367U - Substation ground wire clamp - Google Patents

Abstract

The utility model relates to a substation grounding fastener utensil, be the housing main body of hollow through -hole including the middle part, being provided with the lifting screw in the housing main body, the bottom outside of housing main body is provided with fixed apron, and the terminal surface of fixed apron is connected with drive nut through the mounting, drive nut inboard and the end end screw thread connection of lifting screw, the upper portion of lifting screw is equipped with hollow portion, and it has the pull rod to stretch out in the hollow portion, is equipped with compression spring between the bottom of pull rod and the hollow portion of lifting screw, and there is the ratchet in the middle part outside of lifting screw through first rotatory round pin hub connection, and the housing main body is stretched out to the upper end of ratchet, and ratchet lower extreme card is in on the boss that the pull rod bottom set up, there is the claw of embracing on the pull rod top through the rotatory round pin hub connection of second, embrace a claw pass through the rotatory round pin axle of third with the top of housing main body is connected. Utility model is applicable to on the manipulator is articulated to tub mother with it fast, and safe firm, the contact is good, guarantees the ability of on state current, and convenient to use is swift.

Description

Substation ground wire clamp

technical field

The utility model relates to the technical field of maintenance work tools for high-voltage substations of 750kV and above, in particular to a substation grounding wire clamp specially designed for manipulator construction, which can quickly complete the ground wire hanging.

Background technique

The installation and disassembly of grounding wires in substations is often encountered in switching operations. However, due to the high installation position of high-voltage substation equipment of 750kV and above, most of the points where the grounding wires are suspended at the equipment end are relatively high, and the cross-sectional area of the grounding wire itself is large. , long length, heavy weight, and insufficient rigidity of the operating rod, it is difficult to use the operating rod to directly hang the ground wire on the ground; it is also difficult for the operator to operate on the ladder or the structure , once the operation is wrong, the grounding wire falls, which will cause loss or casualties. If the grounding wire falls and touches other equipment, the consequences will be more serious. Therefore, it is necessary to develop a lifting manipulator to complete this operation. The special chuck of this manipulator is to realize this function to avoid safety accidents.

Contents of the invention

The purpose of this utility model is to provide a clamp for substation grounding wires in order to overcome the above-mentioned defects in the prior art.

In order to achieve the above purpose, the utility model provides a clamp for substation grounding wires, which includes a housing body with a hollow through hole in the middle, a lifting screw that moves up and down inside the housing body, and a fixing screw on the outside of the bottom end of the housing body. Cover plate, the end face of the fixed cover plate is connected with a driving nut through a fixing piece, the inner side of the driving nut is threadedly connected with the bottom end of the lifting screw; the upper part of the lifting screw is provided with a hollow part, and the hollow part is extended There is a pull rod, and a compression spring is arranged between the bottom end of the pull rod and the hollow part of the lifting screw, and the outside of the middle part of the lifting screw is connected with a ratchet through the first rotating pin shaft, and the clamping end of the upper part of the ratchet is The lower end of the ratchet is stuck on the boss provided at the bottom end of the pull rod. The top end of the pull rod is connected with a claw through the second rotating pin, and the claw is connected to the claw through the third rotating pin. connected to the top end of the housing body.

In the above technical solution, the bottom end of the housing body is provided with a peripheral protruding end surface, and the bottom surface of the fixed cover plate is pressed against the protruding end surface.

In the above technical solution, the top end of the housing body is a bell mouth.

In the above technical solution, the lower end of the ratchet is a wedge-shaped surface, and the boss surface provided at the bottom end of the pull rod coincides with the wedge-shaped surface.

The working principle of the utility model is as follows:

The driving nut of the utility model is connected with the fixed cover plate by screws, and the notch in the middle of the driving nut clamps the main body of the housing, and there is enough clearance to ensure that the driving nut can rotate around the main body of the housing. The driving nut and the lifting screw are connected by threads. When the driving nut is rotated, the lifting screw can move up and down in the cavity of the main body of the housing;

The ratchet is connected to the lifting screw through the first rotating pin shaft. When the lifting screw moves downward, it drives the ratchet to move downward, and the ratchet blocks the pull rod to make it also move downward;

The pull rod is connected to the holding claw through the second rotating pin shaft, and the holding claw is connected to the main body of the housing through the third rotating pin shaft. When the pull rod moves downward, the holding claw is driven to rotate around the third rotating pin shaft to clamp the pipe nut;

The beneficial effects of the utility model are: the manipulator supports the driving nut, and the grounding wire is quickly hooked to the pipe mother, which is safe and reliable, with good contact and the ability to conduct current; after the maintenance is completed, the manipulator can instantly remove the grounding wire, without Need to find the location accurately, convenient and fast.

Description of drawings

Fig. 1 is a structural schematic diagram of a substation ground wire clamp;

Fig. 2 is a schematic diagram of the use state of the substation ground wire clamp.

In the figure: 1. Drive nut; 2. Shell main body; 3. Lifting screw; 4. Compression spring; 5. First rotating pin; 6. Ratchet; 7. Pull rod; 8. Second rotating pin; 9. The third rotating pin shaft; 10, holding claw; 11, pipe nut; 12, fixed cover plate; 13, fixed piece; 21, protruding end surface; 22, bell mouth; 61, clamping end; 62, wedge-shaped surface; 71 , Convex table surface; 81, manipulator; 82, ground wire.

Detailed ways

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

The substation ground wire clamp shown in Figure 1 includes a housing main body 2 with a hollow through hole in the middle, a lifting screw 3 that moves up and down inside the housing main body 2, and a fixed cover plate 12 on the outside of the bottom end of the housing main body 2. The end surface of the cover plate 12 is connected with the drive nut 1 through the fixing part 13, and the inner side of the drive nut 1 is threadedly connected with the bottom end of the lifting screw 3; the upper part of the lifting screw 3 is provided with a hollow part, and a pull rod 7 protrudes from the hollow part A compression spring 4 is provided between the bottom end of the pull rod 7 and the hollow part of the lifting screw 3, and the outside of the middle part of the lifting screw 3 is connected with a ratchet 6 through the first rotating pin shaft 5, and the clamping end 61 on the upper part of the ratchet 6 extends Out of the main body 2 of the housing, the lower end of the ratchet 6 is stuck on the boss provided at the bottom end of the pull rod 7, and the top of the pull rod 7 is connected to the claw 10 through the second rotating pin 8, and the claw 10 is connected to the third rotating pin 9 through the third rotating pin 8. The top end of the housing main body 2 is connected. The fixing part 13 is a screw.

The bottom end of the housing main body 2 is provided with a peripheral protruding end surface 21, the bottom surface of the fixed cover 12 is pressed against the protruding end surface 21, and the fixed cover 12 is limited to the bottom end of the housing main body 2 by the protruding end surface 21, and the fixed cover The plate 12 is fixedly connected with the driving nut 1 , and the driving nut 1 is arranged at the lower end of the housing main body 2 and can rotate at the lower end of the housing main body 2 . The top of the shell main body 2 is a bell mouth 22, which is used to match and be close to the bell mouth at the bottom of the holding claw 10.

The lower end of the ratchet 6 is a wedge-shaped surface 62 , and the boss surface 71 provided at the bottom end of the pull rod 7 coincides with the wedge-shaped surface 62 .

During specific use, refer to Fig. 2, when the manipulator 81 grabs the substation grounding wire fixture of the present utility model, the manipulator clamps the driving nut 1, and sends the entire substation grounding wire clamp directly below the tube mother 11, and drives the manipulator The wheel rotation drives the nut 1 to rotate, thereby driving the lifting screw 3 to move downward, thereby driving the ratchet 6 to move downward, and the ratchet 6 clamps the pull rod 7 to make it also move downward, thereby driving the claw 10 to rotate around the third The rotating pin shaft 9 rotates, and finally the holding claw 10 clamps the pipe nut 11, and the grounding wire 82 is hung up.

When the manipulator takes out the substation ground wire clamp of the present utility model, the manipulator 81 simultaneously presses the clamping ends 61 of the two ratchets 6, and the ratchets 6 rotate outward around the first rotating pin shaft 5, resulting in no resistance above the pull rod 7, Under the force of the compression spring 4, the pull rod 7 bounces upward quickly, thereby driving the claw 10 to rotate outward around the third rotating pin shaft 9, and finally the claw 10 releases the tube nut 11, and the manipulator 81 is removed to complete the process. Work.

The utility model is suitable for the manipulator to quickly hook it to the pipe mother, which is safe and reliable, has good contact, and ensures the ability to conduct current; after the inspection is completed, the manipulator can remove it instantly, without the need to accurately find the position, which is convenient and quick.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (4)

1. A substation grounding wire clamp is characterized in that: the middle part is a shell body (2) with a hollow through hole, the shell body (2) is provided with a lifting screw (3) that moves up and down, and the shell body ( 2) The outside of the bottom end is provided with a fixed cover (12), and the end face of the fixed cover (12) is connected with a drive nut (1) through a fixture (13), and the inside of the drive nut (1) is connected to the drive nut (1). The bottom end of the lift screw (3) is threadedly connected; the top of the lift screw (3) is provided with a hollow part, and a pull rod (7) is stretched out in the hollow part, and the bottom end of the pull rod (7) is connected to the lift screw ( 3) A compression spring (4) is provided between the hollow parts, and the outside of the middle part of the lifting screw (3) is connected with a ratchet (6) through the first rotating pin shaft (5), and the upper part of the ratchet (6) The clamping end (61) of the clamping end (61) protrudes from the housing body (2), the lower end of the ratchet (6) is stuck on the boss provided at the bottom end of the pull rod (7), and the top end of the pull rod (7) is rotated by the second The pin shaft (8) is connected with a claw (10), and the claw (10) is connected with the top end of the housing main body (2) through a third rotating pin shaft (9). 2. The substation ground wire clamp according to claim 1, characterized in that: the bottom end of the housing body (2) is provided with a peripheral protruding end surface (21), and the bottom surface of the fixed cover plate (12) is pressed tightly It is arranged on the protruding end surface (21). 3. The substation ground wire clamp according to claim 1 or 2, characterized in that: the top end of the casing main body (2) is a bell mouth (22). 4. The substation ground wire clamp according to claim 1, characterized in that: the lower end of the ratchet (6) is a wedge-shaped surface (62), and the convex surface (71) provided at the bottom end of the pull rod (7) is in contact with the The above-mentioned wedge-shaped surface (62) coincides.