Butt-joint type garbage truck rear door opening and closing device

Abstract

A butt-joint type garbage truck rear door opening and closing device comprises a driving cylinder, a main arm, an auxiliary arm, a linkage arm, a first supporting seat and a second supporting seat, wherein the first supporting seat and the second supporting seat are fixed on a side wall of a carriage assembly; kidney-shaped grooves are respectively formed in the first supporting seat and the second supporting seat; a hinge pin capable of sliding and pivoting is arranged in each kidney-shaped groove; the main arm is in the shape of a broken line; a longer part of the main arm diagonally and downwards extends to the direction of the tail of a garbage truck, and the tail end of the longer part of the main arm is hinged to a side wall of a rear door; a shorter part of the main arm diagonally and downwards extends to the direction of the head of the garbage truck, and the tail end of the shorter part of the main arm is hinged to an outputting end of the driving cylinder; one end of the auxiliary arm is hinged to the hinge pin on the second supporting seat while the other end of the auxiliary arm is hinged to the side wall of the rear door; and the linkage arm is connected to the hinge pin of the first supporting seat and the hinge pin of the second supporting seat. The driving cylinder drives the main arm, the main arm and the auxiliary arm which is in linkage with the main arm rotate around respective rotating shafts, so that the rear door overturns while revolving around a shaft, linear stroke of opening and closing of the rear door is shortened, and load to a rotary shaft is shared.

Description

Technical field: [0001] The invention relates to the technical field of garbage trucks, in particular to a rear door opening and closing device of a docking garbage truck. Background technique: [0002] Docking garbage truck, also known as garbage compression station docking garbage truck: it is a special vehicle used for garbage transfer and unloading operations in urban garbage compression stations. There is a compression garbage station in the urban garbage transfer building. The compression garbage station compresses the garbage into pieces, lifts the compression box, and opens the discharge door of the compression box. It is docked with the back door of the compression box, and then the garbage blocks are horizontally pushed into the body of the docking garbage truck by the push plate in the compression box. After the garbage is loaded, the back door of the docking garbage truck is closed, and the garbage is transported to the garbage disposal site for dumping. [0003...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, in the existing docking garbage truck, the side of the compartment 91 is rectangular and the upper corner of the inlet and outlet is provided with a chamfered shape, and the side view shape of the rear door 92 is a broken line that fits the inlet and outlet. , its opening and closing device is set as follows: the back door 92 is fixed with the connecting arm, and the connecting arm can only rotate around a rotating shaft (fulcrum). ; 2, the backward / forward linear stroke when the rear door 92 is required to be opened / closed is longer, otherwise it will be blocked by the compartment 91 and cannot rotate; 3, the corner position of the fully opened position of the rear door 92 is difficult to control

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