Hydraulic back door opening device of side mounting car

Abstract

The invention discloses a hydraulic back door opening device of a side mounting car. The device comprises a back door oil cylinder, a triangular connecting rod and a cross beam; a hydraulic extension rod of the back door oil cylinder is connected with an arc connecting plate through a rotating shaft I; the arc connecting plate is connected with a straight rod of the triangular connecting rod through a hinge shaft; a stop pipe is arranged out of the upper end of a straight rod of the triangular connecting rod; the arc connecting plate is connected with the upper edge of a car back door through a rotating shaft II; rotating shafts III are symmetrically arranged on the upper edge of the car back door on two sides of the rotating shaft II; the triangular connecting rod is connected with the cross beam through a small concentric shaft; the two ends of the cross beam are connected with the car back door through lock pin parts I; and the bottom center position of the cross beam is connected with a center beam of the car back door through a locking pin part II. The device realizes automatic opening and locking of a back door of a self-loading/unloading garbage truck through controlling one oil cylinder; the opening angle of the back door is 130 degrees; and the device is simple in structure, convenient for installation and large in opening angle, reduces the manufacturing cost, and prolongs the service life of the back door.

Description

technical field [0001] The invention belongs to the technical field of opening equipment for side loading rear doors, in particular to a hydraulic rear door opening device for side loading vehicles. Background technique [0002] The unloading of the goods loaded in the compartment of the vehicle is generally unloaded from the back door. People have done a lot of research on the locking device for the rear door of the rear-turning self-unloading compartment. After rising to a certain height, it will naturally droop by the gravity of the rear door for unloading. The defect that this structure exists is that the opening size is too small, which is easy to jam the garbage. When the rear door is opened at a small opening angle, it is easy to be impacted by materials, causing the rear door to be damaged, shortening the service life of the rear door, and the unloaded goods are also likely to touch the rear door and deform the rear door, resulting in the failure of the rear door to...

AI Technical Summary

Problems solved by technology

When the rear door is opened at a small opening angle, it is easy to be impacted by materials, causing the rear door to be damaged, shortening the service life of the rear door, and the unloaded goods are also likely to touch the rear door and deform the rear door, resulting in the failure of the rear door to close. Strict, resulting in material leakage, and even accidents

If the hook fixed on the vehicle frame is used to hook the bottom of the rear door, the hook at the bottom of the rear door is easy to collide with the unloading due to the harsh working environment of the vehicle. Shake the vehicle back and forth, causing a big impact between the rear door and the side panel of the compartment, so the hook is easily deformed or damaged, resulting in the situation that it cannot be locked or opened

[0003] The device that controls the opening of the back door through the oil cylinder in the prior art has the technical disadvantage that the back door must be closed and locked by two oil cylinders and the installation is cumbersome, and the locking of the back door has only two outer frame points, which inevitably requires the strength of the back door to be higher. High, cost increases, and the opening angle is 90 degrees, which affects the reliability of the device

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