Back carriage door auxiliary locking mechanism of dumper

Abstract

The invention relates to the technical field of dumpers, in particular to a back carriage door auxiliary locking mechanism of a dumper, comprising a truck body, a carriage, a worm, a worm wheel, a guide rail, an auxiliary latch hook, a cam, a lock cylinder and a drive motor. The worm which is mounted on the carriage is engaged with the worm wheel which is mounted on the carriage through a rotatingshaft in key connection with the worm wheel, and the drive motor is mounted on the carriage and connected with the worm; the guide rail is rotationally connected with the rotating shaft and the auxiliary latch hook is in slide fit with the guide rail; the cam is fixedly connected with the rotating shaft, and is provided with an eccentric guide groove, the auxiliary latch hook is fixedly providedwith a slider which is in slide fit with the eccentric guide groove, and the cam can drive the auxiliary latch hook to expand and retract under action of the eccentric guide groove and the slider; thelock cylinder is fixedly arranged on the back carriage door and matched with the auxiliary latch hook. The back carriage door auxiliary locking mechanism and a self-locking mechanism of the dumper cooperate to realize double locking of the back carriage door, the back carriage door can be locked well by the self-locking mechanism after the carriage is reset, joggle of the back carriage door can be avoided effectively, and thus safety is improved.

Description

technical field [0001] The invention relates to the technical field of dump trucks, in particular to an auxiliary locking mechanism for a rear compartment door of a dump truck. Background technique [0002] A dump truck, also known as a dump truck, includes a car body and a cargo compartment. The cargo compartment is reversibly installed on the vehicle body, and the cargo compartment can be turned over by a hydraulic lifting system to realize automatic unloading. The rear portion of the cargo compartment is provided with a rear compartment door, and the upper end of the rear compartment door is pivotally connected to the cargo compartment. When it is not in the unloading state, the rear compartment door remains closed. When unloading, the rear compartment door is opened. The utility model patent with the application number 201621258415.X discloses a dump truck. See paragraphs 0037-0039 of the utility model specification and attached drawing 8. There is a manual hook plate on...

AI Technical Summary

Problems solved by technology

However, the manual hook device and the tailgate stop and anti-jump board have the following disadvantages: (1) After the unloading is completed, during the reset process of the cargo compartment, the tailgate is very easy to be caused by some materials and tailgates mixed between the tailgate and the cargo compartment. The rust of the plate pivot can not be fully reset, which will cause the large locking hook of the tailgate to be unable to lock the tailgate; (2) The manual hook plate can rotate around the manual hook pin, so it is very easy to disengage the manual due to bumpy road conditions. The hook locks the shaft, causing it to fail; (3) After the tailgate is closed, there is a gap between the tailgate stop anti-jump plate and the manual hook pin (otherwise the tailgate is not easy to close), so the tailgate stop anti-jump plate restricts the tailgate The jumping function is limited, and there is still a situation where the tail plate is not closed firmly

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