CN203743170U - Antitheft bolt of transmission tower - Google Patents

Abstract

The utility model discloses an antitheft bolt of a transmission tower and belongs to the technical field of bolts. The antitheft bolt of the transmission tower comprises a cylinder head bolt body. A left boss and a right boss are arranged in the center of the top face of a cylinder head of the cylinder head bolt body, wherein the left boss and the right boss are in central symmetry with respective to the center of the top face. The upper right portion of the top face of the left boss is an angle smaller than or equal to 90 degrees, the right side edge of the angle is located on the left side of the vertical center line of the top face of the cylinder head and kept parallel to the left side of the vertical center line of the top face of the cylinder head, and the length of the right side edge of the angle is larger than or equal to the radius of the top face of the cylinder head. The upper right portion of the top face of the left boss is an angle smaller than or equal to 60 degrees. The left boss and the right boss are respectively provided with an outer surface matched with the outer circumference face of the top face of the cylinder head. The antitheft bolt is suitable for fastening connection of parts on a power transmission tower rod, can be tightened by a screwdriver and facilitates installation and construction of the power transmission tower rod. When the bolt is repaired, a matched special tool must be used for loosening the bolt, the bolt cannot be loosened by a common screwdriver or a wrench, bolts and other components of the power transmission tower rod can be effectively prevented from being stolen, and safe operation of an electric transmission line is guaranteed.

Description

An anti-theft bolt for transmission tower

technical field

The utility model relates to the technical field of bolts.

Background technique

During the inspection of transmission lines, it is often found that the tower materials on the line poles and towers are stolen, which brings safety hazards to the safe operation of transmission lines, and brings great harm to national property and people's life safety. In the prior art,

An anti-theft bolt with a built-in ball structure is often used. When the anti-theft bolt is installed, the ball often falls off or the ball breaks, making the bolt lose the anti-theft function, and because of the quality of the bolt, the bolt is often not tightened in place and cannot be reversed. The phenomenon that the tower material cannot be fastened at the construction site.

Utility model content

The technical problem to be solved by the utility model is to provide an anti-theft bolt of a power transmission tower, which can be tightened with a screwdriver in the forward direction, and can only be loosened by matching a special opening tool in the reverse direction.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an anti-theft bolt of a power transmission tower, including a cylindrical head bolt body, and the top surface of the cylindrical head bolt body of the cylindrical head bolt body is provided with a center symmetrical bolt with respect to the center of the top surface. The left boss and the right boss; the upper right part of the top surface of the left boss is an angle of ≤90°, the right side of the angle is located on the left side of the vertical center line of the top surface of the cylinder head and remains parallel, and the angle The length of the right side ≥ the radius of the top surface of the cylinder head.

The further improvement made to the utility model is: the upper right part of the top surface of the left boss is at an angle of ≤60°. The left boss and the right boss are respectively provided with outer surfaces matching the outer peripheral surface of the top surface of the cylinder head.

The beneficial effect produced by adopting the above-mentioned technical solution is that the utility model is suitable for the fastening and connection of parts on the power transmission tower rod, which can be tightened with a screwdriver, which is convenient for the installation and construction of the power transmission tower rod. The bolts must be loosened with matching special tools when overhauling them, and cannot be loosened with ordinary screwdrivers and wrenches, which can effectively prevent the bolts and components of the transmission tower from being stolen and ensure the safe operation of the transmission line.

Description of drawings

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

Fig. 1 is the structural representation of cylindrical head bolt body of the present utility model.

FIG. 2 is a right side view of FIG. 1, showing the structure of Embodiment 1. FIG.

Fig. 3 is a right side view of Fig. 1, showing the structure of the second embodiment.

As shown in the figure: 1. The top surface of the cylindrical head, 2. The left boss, 3. The right boss, and 4 corners.

Detailed ways

Contrasted with Fig. 1-3, the operation steps of the present utility model are further described:

Embodiment 1: An anti-theft bolt for a power transmission tower, including a cylindrical head bolt body, the cylindrical head top surface 1 of the cylindrical head bolt body is provided with a left boss 2 and a right boss 3 that are centrally symmetrical with respect to the center of the top surface; The upper right part of the top surface of the left boss 2 is an angle 4 of ≤ 90°, the right side of the angle 4 is located on the left side of the vertical center line of the cylinder head top surface 1 and kept parallel, the right side of the angle 4 is Length ≥ the radius of the top surface 1 of the cylindrical head. The left boss 2 and the right boss 3 are respectively provided with outer surfaces matching with the outer peripheral surface of the cylinder head top surface 1 . The usage method of this embodiment: the bolt is quenched and tempered with medium carbon steel. When the anti-theft bolt is installed, the head of the screwdriver is inserted into the plane between the left boss 2 and the right boss 3, and the anti-theft bolt is tightened by turning right. Can supporting special-purpose opening wrench when opening, the head of this special-purpose wrench is provided with the profile that is matched with left boss 2 and right boss 3, can block cylinder head top surface 1 left-handed unclamping anti-theft bolt. The anti-theft bolt cannot be loosened with a common screwdriver or adjustable wrench.

Embodiment 2: An anti-theft bolt for a power transmission tower, including a cylindrical head bolt body, the cylindrical head top surface 1 of the cylindrical head bolt body is provided with a left boss 2 and a right boss 3 that are centrally symmetrical with respect to the center of the top surface; The upper right part of the top surface of the left boss 2 is an angle 4 of ≤ 90°, the right side of the angle 4 is located on the left side of the vertical center line of the cylinder head top surface 1 and kept parallel, the right side of the angle 4 is Length ≥ the radius of the top surface 1 of the cylindrical head. The upper right part of the top surface of the left boss 2 is an angle of ≤60°. The left boss 2 and the right boss 3 are respectively provided with outer surfaces matching with the outer peripheral surface of the cylinder head top surface 1 . The usage method of this embodiment: the bolt is quenched and tempered with medium carbon steel. When the anti-theft bolt is installed, the head of the screwdriver is inserted into the plane between the left boss 2 and the right boss 3, and the anti-theft bolt is tightened by turning right. Can supporting special-purpose opening wrench when opening, the head of this special-purpose wrench is provided with the profile that is matched with left boss 2 and right boss 3, can block cylinder head top surface 1 left-handed unclamping anti-theft bolt. The anti-theft bolt cannot be loosened with a common screwdriver or adjustable wrench. the

Claims (3)

1. An anti-theft bolt for a power transmission tower, characterized in that: it includes a cylindrical head bolt body, and the cylindrical head top surface (1) of the cylindrical head bolt body is provided with a left boss (2) that is center-symmetrical to the center of the top surface and the right boss (3); the upper right part of the top surface of the left boss (2) is an angle (4) of ≤90°, and the right side of the angle (4) is vertical to the top surface (1) of the cylinder head The left side of the center line is kept parallel, and the length of the right side of the angle (4) is greater than or equal to the radius of the top surface (1) of the cylinder head. 2. An anti-theft bolt for power transmission poles and towers according to claim 1, characterized in that: the upper right part of the top surface of the left boss (2) is an angle ≤ 60°. 3. An anti-theft bolt for power transmission poles and towers according to claim 1 or 2, characterized in that: the left boss (2) and the right boss (3) are respectively provided with Fitted exterior surface.