CN210490261U

CN210490261U - Anti-disengaging shaft electric power construction pulley

Info

Publication number: CN210490261U
Application number: CN201920914539.6U
Authority: CN
Inventors: 孙利民; 杨阳; 李晓翠; 陈学兵
Original assignee: Zhengzhou Business University
Current assignee: Zhengzhou Business University
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-05-08
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a key feature does of anticreep axle electric power construction coaster, the triangle-shaped breach of the downside in the lifting hook shaft hole of the first curb plate of current openable changes the rectangle breach into, can open the first curb plate of openable for increasing lifting hook axle head shear cross section thickness does not interfere again and open and close, change the crew cut top of original lifting hook axle into the button head, change side triangle-shaped salient piece into the rectangle salient piece in addition, match with the rectangle breach of the downside in the lifting hook shaft hole of the first curb plate of openable, increase shear cross section's width, effectively increase the area of the shear plane of salient piece, the lateral pressure of hawser is resisted in the reinforcing.

Description

Anti-disengaging shaft electric power construction pulley

Technical Field

The invention belongs to a side plate opening type electric power construction tackle for improving safety performance.

Background

The electric power construction tackle is an essential tool in the construction process of a large-scale power grid and is mainly used in the erecting process of a power transmission tower or the tensioning process of a power transmission cable. In order to conveniently sleeve a steel wire rope or a cable (also commonly called a cable) in construction application, the side plate of the pulley can be conveniently opened.

However, in the construction process, the cable does not always stably run in the center of the wheel groove or lean against the side plate to provide great pressure for the side plate, the side plate of the current general product on the market resists the transverse force and is mainly born by the triangular protruding part at the top end of the hook shaft, the stress characteristic is the shear stress at the root part of the triangular block, the root part of the triangular block is cut off due to the limited cross-sectional area of the root part of the triangular block and the small shear resistance, when the cable runs against the side plate, the hook shaft is separated from the side plate to cause the opening of the side plate, the cable with great tension can be thrown out of the pulley, and the cable is thrown to the periphery like a steel whip thrown at high speed, thereby forming great. Related accidents occur in China every year, and huge losses of lives and properties are caused.

The invention aims to improve the strength of the protruding part at the top end of the lifting hook shaft, and the lifting hook shaft cannot easily slip even if a steel wire rope or a cable does not run in a wheel groove.

Disclosure of Invention

The invention is mainly technically characterized in that: the openable upper half side plate end of the existing hook shaft is changed into a round-head rectangular protruding block from a flat-head triangular protruding block, the width and the thickness of a combining surface of the protruding block and a shaft body are increased, namely, the area of a shearing surface of the protruding block is effectively increased, and therefore the safety performance of the side-opening type electric power construction tackle is improved.

The utility model provides a key feature is that anticreep axle electric power construction coaster, the triangle-shaped breach of the downside in the lifting hook shaft hole of first curb plate (4) can open is cut into the rectangle breach, but not interfere opening first curb plate (4) and open and close again for thickening lifting hook shaft end shear cross section thickness, the crew cut top with original lifting hook axle (2) changes the button head into, the triangle-shaped bulge piece that the side was taken changes into the rectangle bulge piece in addition, with the rectangle breach of the downside in lifting hook shaft hole (3) of first curb plate (4) can open, increase shear cross section's width, the area of the shear surface of effective increase bulge piece, the lateral pressure of hawser is resisted in the reinforcing.

Drawings

Fig. 1 is a diagram of an electric construction tackle for preventing a mooring rope from slipping, wherein each part (1) of the drawing is a lifting hook, (2) a lifting hook shaft with a round head side edge and a rectangular protruding block is arranged at the top end of the lifting hook shaft, (3) a rectangular notch is arranged at the lower end of a lifting hook shaft hole on an opening half side plate, (4) an opening half side plate capable of rotating around a hinge, (5) a whole fixed side plate, (6) a grooved pulley, (7) a pulley main shaft, (8) a fixed half side plate and (9) two side plate fixing bolts. FIG. 2 is a partial enlarged view of the end of a hook shaft with a rounded tip and rectangular lugs on its sides.

Detailed Description

The method is implemented specifically by rotating a lifting hook (1) in the picture 1 clockwise by 90 degrees, enabling a lifting hook shaft (2) which is welded together with the lifting hook shaft to rotate along with the lifting hook shaft, enabling a rectangular protruding block of the lifting hook shaft to coincide with a rectangular notch of a lifting hook shaft hole (3) at the lower end of an opening half side plate (4) capable of rotating around a hinge, opening the opening half side plate (4) capable of rotating around the hinge outwards around the hinge shaft, sleeving a steel wire rope into a grooved pulley (9), closing the opening half side plate (4) capable of rotating around the hinge, rotating the lifting hook (1) anticlockwise by 90 degrees, enabling the lifting hook to be in a straight line with a pulley main shaft (7) and two side plate fixing bolts (9), and starting to work; therefore, the shear-resistant area of the rectangular convex block at the round head top end of the hook shaft is effectively increased compared with that of the original flat-head triangular convex block, the lateral pressure resistance of the cable rope is increased, and the purpose of preventing the shaft from falling off is achieved.

The invention is already implemented in a laboratory, and the effect achieves the aim.

Claims

1. The utility model provides an anticreep axle electric power construction coaster, characterized by, the downside cutting rectangle breach (3) in lifting hook shaft hole on first curb plate (4) can open a mouthful, and top (2) of lifting hook axle are processed into the button head to process into rectangle breach (3) the matching of the downside in rectangle and lifting hook shaft hole with its side bulge piece.