Semi-trailer locking device provided with self-unloading booster

Abstract

The invention discloses a locking device for a semi-trailer with a self-unloading booster. The tightening bolt is fixedly welded to the front end surface of the locking seat beam, the cylinder seat is fixedly welded to the upper surface of the locking seat beam, the cylinder block is movably connected to the upper surface of the cylinder seat, and the front outer surface of the cylinder block is nested with a sealing ring. The sealing ring and the cylinder block are connected by an interference fit. The left and right end surfaces of the sealing ring are connected with fixing plates by screws, and the cylinder head is movably connected to the upper surface of the cylinder block. The present invention can be carried out on semi-trailers. During the self-unloading and locking process, it plays a certain bottom support role while automatically lifting, avoiding the forward tilt of the vehicle body due to imbalance, ensuring the safety of the vehicle during self-unloading and locking, and effectively improving the safety of the equipment. performance and stability.

Description

technical field [0001] The invention relates to a semi-trailer locking device with a self-unloading booster, which belongs to the technical field of semi-trailer locking. Background technique [0002] The existing small four-wheel tractor semi-trailer mechanical self-unloading locking device is composed of a locking seat, a locking pin and a return spring. This kind of locking device can only lock the semi-trailer box, and cannot automatically assist unloading. Therefore, when unloading, the load before the axis line of the semi-trailer wheel must be removed first, causing the center of gravity of the load to shift to the axis line of the semi-trailer wheel. Then open the locking device, tilt the semi-trailer box backwards, and drive the tractor backwards to realize unloading; or open the locking device first, and then several people lift the front end of the semi-trailer box, causing the center of gravity of the load to shift to the axis line of the semi-trailer wheel In t...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a semi-trailer locking device with a self-unloading booster to solve the problem that the prior art cannot automatically lift the semi-trailer during the process of self-unloading and locking the semi-trailer. At the same time, it plays a certain role of bottom support, which may cause the car body to lean forward due to imbalance, and the safety performance and stability are insufficient.

Images