Small cantilever-type fully-automatic loading and unloading crane pipe

Abstract

The invention discloses a small cantilever-type fully-automatic loading and unloading crane pipe, which comprises an upright post, a liquid-phase crane pipe and a vertical pipe, wherein the liquid-phase crane pipe is formed from an inner arm and an outer arm which are connected together, the head end of the inner arm is connected with the upright post, the tail end of the outer arm is connected with the vertical pipe, and a spring-cylinder balancing device is installed at the outer side of the outer arm; a horizontally-telescopic cylinder for controlling the outer arm to rotate in a horizontal direction and a bidirectional cylinder for controlling the inner arm to rotate in the horizontal direction are installed at the upper part of the inner arm in the horizontal direction, one end of the horizontally-telescopic cylinder is connected with the inner arm through a steering assembly, a piston rod at the other end is connected with the outer arm or is connected with the outer arm through the spring-cylinder balancing device, the A end of the piston rod of the bidirectional cylinder is connected with the steering assembly through a transmission mechanism, and the B end of the piston rod of the bidirectional cylinder is connected with a guiding assembly which is installed at the upper part of the inner arm through the transmission mechanism; and a lifting cylinder for controlling the outer arm to move in an upright direction is installed on the spring-cylinder balancing device. Through the small cantilever-type fully-automatic loading and unloading crane pipe, the automatic alignment of the crane pipe and a tank-car tank opening is realized, and the work efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of loading and unloading fluid materials on railway tank cars, and in particular relates to a cantilever type automatic loading and unloading small crane tube, which is used for loading and unloading flammable and explosive liquids on railway tank cars. Background technique [0002] Crane tube is the main equipment in the process of liquid loading and unloading in the petrochemical industry. At present, the crane tube is mainly composed of a column, a horizontal tube, a vertical tube, a rotary joint and a moment balance device to form a liquid phase crane tube, and the crane tube with the function of oil and gas recovery is based on the above liquid phase crane tube structure. Gas-phase crane tubes with basically the same branch structure. In the prior art, most of the crane pipes are manually manipulated to align them with the tank mouth of the tanker. In this way, the labor intensity of the operator is hi...

AI Technical Summary

Problems solved by technology

Chinese Patent No. 94204828.8 discloses a pneumatic crane tube, which uses an air motor as the driving mechanism, and utilizes the transmission structure of the worm wheel and the worm, so as to realize the alignment of the crane tube with the tank mouth of the tanker. This structure replaces manual operation. It is advanced to a certain extent, but the transmission between the worm gear and the worm is prone to sparks during the working process. Therefore, this pneumatic crane tube is not suitable for work in flammable and explosive areas, and the air motor is prone to failure and noise. It is very large, which not only seriously threatens the safe production of petrochemical enterprises, but also affects the health of loading personnel

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