Rear door locking device of small-tonnage collection vehicle

Abstract

The invention relates to a rear door locking device of a small-tonnage collection vehicle. The rear door locking device overcomes the defects that due to the fact that in the prior art, a rear door and a compartment are locked through a rapid clamp mechanism, looseness caused by corrosion of a sealing strip is prone to happening, and sewage is sprinkled and leaks when the rear door is not locked in place. The rear door locking device comprises lock hook bases fixed to the rear door and supporting bases fixed to the bottom of the compartment. Lock hooks capable of being locked on the lock hook bases are hinged to the supporting bases. The lock hooks are driven to rotate by an elastic telescopic lead screw which has elasticity and is adjustable in length. A hook and a hook base matched with the hook are hinged to the lateral side of the compartment. The hook is hinged to the elastic telescopic lead screw. By rotating the hook, the elastic telescopic lead screw and the hook pass a dead point to form self locking and lock the rear door. The elastic telescopic lead screw has elasticity and is adjustable in length, and after the sealing strip between the rear door and the compartment is corroded, it can be ensured that the lock hooks have enough locking force through the elasticity of the elastic telescopic lead screw.

Description

technical field [0001] The invention relates to a locking device for a vehicle door, in particular to a locking device for a rear door of a small-tonnage collection vehicle. Background technique [0002] With the progress and development of society, people's living standards are improving day by day, and a large amount of material consumption, while enriching life, also continuously produces garbage. [0003] The country has invested a large number of sanitation garbage trucks in urban sanitation, especially small-tonnage garbage collection vehicles, which are specially used for garbage collection. But existing small-tonnage collecting car generally all is back door opening type, and the lock between back door and the compartment is tightly by traditional fast clamp mechanism. The length of this mechanism is fixed, and after long-term use, the sealing strip between the rear door and the compartment will gradually loosen due to the corrosion of sewage, resulting in insuffici...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the defect that the existing rear door and the compartment are locked by a fast clamp mechanism, which is easy to loose due to the corrosion of the sealing strip, resulting in insufficient locking of the rear door and the occurrence of sewage spilling and dripping, and provides a small tonnage collection The rear door locking device uses an elastic telescopic screw rod as the driving part of the lock hook. It has elastic force and the length can be adjusted, so that it can automatically adapt to the change in the gap between the rear door and the compartment after the sealing strip is corroded, and always lock the rear door.

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