Electro-hydraulic multi-lobe grab polygonal center cylinder

Abstract

The invention provides a polygonal central cylinder of a power-driven hydraulic orange-peel bucket. The polygonal central cylinder comprises a central cylinder body which is polygonal, the polygonal cylinder body comprises an upper cylinder body and a lower cylinder body, longitudinal reinforcing rib plates are arranged on the edges of the upper cylinder body and the lower cylinder body, the upper cylinder body is an upwards-open cylinder body, the upper cylinder body is provided with a motor and a control valve block of a hydraulic system of the motor, the lower cylinder body is an oil tank and provided with an oil pump and a coupling, a rectangular hole is longitudinally formed between each set of reinforcing rib plates on the upper cylinder body, and each rectangular hole is provided with a steel shutter. By means of the polygonal central cylinder, the problem of heat dissipation affecting production due to too high oil temperature of the bucket when the environmental temperature is high is solved, and meanwhile routine inspection and maintenance of the bucket are facilitated. Under the condition that the volume of the oil tank is constant, the heat dissipation surface area of the polygonal oil tank is larger than that of a cylindrical oil tank, the open type upper cylinder body facilitates heat dissipation of the motor, and meanwhile inspection and maintenance of the hydraulic control block are facilitated.

Description

technical field [0001] The invention relates to the technical field of electro-hydraulic multi-lobe grabs, in particular to a central cylinder on an electro-hydraulic multi-lobe grab. Background technique [0002] In the prior art, the central cylinder of common electro-hydraulic multi-lobe grabs is cylindrical. There is a circular flange in the middle, and the lower part is a circular fuel tank. There are multiple ribs welded on the outside to connect the bucket petals. The cylinder on the upper part of the flange is also welded with the same number of ribs as the lower part to connect the oil cylinder. The motor and the control valve block of the hydraulic system are installed in the upper cylinder, and the oil pump and coupling are installed in the lower cylinder. [0003] In the prior art, the common electro-hydraulic multi-lobe grab has no cooling device. If the ambient temperature is high, especially in summer, after the grab has been used for a period of time, the oi...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the common electro-hydraulic multi-lobe grab has no cooling device. If the ambient temperature is high, especially in summer, after the grab has been used for a period of time, the oil temperature will often be high, and the grab will be in the high temperature system for a long time. If used under low conditions, it will cause failure of hydraulic oil, premature wear of hydraulic parts, and increase of system failure rate.

If a high temperature alarm sensor is installed on the grab, the grab must be stopped after a high temperature alarm occurs, which affects production efficiency

In addition, the upper cylinder of existing products is limited by the shape, and the inspection window opened is generally too small, which is not convenient for the inspection and maintenance of the hydraulic control system

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