Pin components and piling machinery

Abstract

The invention discloses a hinge pin component and piling machinery. The hinge pin component is used for connecting a first part and a second part. A portion of the first part penetrates the second part, and shaft holes are formed in corresponding positions of the first part and the second part. The hinge pin component comprises a hinge pine and anti-looseness locking part. The hinge pin is used for penetrating the shaft holes, an anti-looseness groove is formed in one end of the hinge pin, and the anti-looseness locking part is arranged on the second part and selectively matched with the anti-looseness groove. A limit groove for accommodating the anti-looseness locking part and limiting the moving of the anti-looseness locking part along the axial direction of the hinge pin is arranged at a position of the second part, which is corresponding to the anti-looseness groove. At least a portion of the anti-looseness locking part is disposed in the limit groove. When the hinge pin component is used for connecting parts such as hexagonal joints, bolt and nut matching is not required for fixing and looseness prevention, so that falling of a drill stem due to ejection of the hinge pin caused by nut loosening is prevented; according to the hinge pin component and piling machinery, the anti-looseness locking part is matched with the anti-looseness groove, so that the problem of difficulty in dismounting due to rusting can be solved.

Description

technical field [0001] The invention relates to the technical field of mechanical connection anti-loosening, in particular to a pin shaft assembly and a piling machine provided with the pin shaft assembly. Background technique [0002] At present, in pile machinery products, the drill pipes and the drill pipe and the drill bit are connected through inner and outer hexagonal joints. Specifically, the inner and outer hexagonal joints are fixedly connected by pin shafts to transmit axial tension. The shaft passes through the inner and outer hexagonal joints, and is fixed at the end with nuts; in addition, in order to prevent the nut from falling off due to the rotation of the pin shaft, which will cause the connection of the two connecting square heads to be separated, a pin is added, and the pin is connected from the inner hexagonal The joint is inserted so that the end of the pin is pressed against the pin shaft to prevent the pin shaft from rotating. [0003] However, due t...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a pin shaft assembly and a piling machine. The pin shaft assembly adopts a new structural design and has an anti-loosening function to solve the problem that the nut loosening causes the connecting pin shaft to escape and the drill pipe to fall off, and Difficult disassembly due to rust

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