Development and key technologies of Dregs Hopper Gantry Crane

04/04/2019

According to market research, in order to cooperate with the construction of the subway, a special gantry crane is needed to enhance the slag excavated by the tunnel shield machine, that is Dregs Hopper Gantry Crane. It is a special equipment specially designed for the construction of subway tunnels and the removal of muck from underground construction.

Dregs Hopper Gantry Crane

Dregs Hopper Gantry Crane is mainly used to complete the lifting of the silt and the truck from the shaft (30~60m deep) from the shaft to the ground and dumping work. The crane has to pass the specific device and the eccentricity at the two ends of the Dregs Hoppe. The shaft is hinged and the dregs Hoppe is used to achieve the slag. There are two ways to dump the dregs. One is to lift the Dregs Hoppe above the special dumping bracket placed on the lower part of the leg or on the ground. The lower gantry hook spreader causes the eccentric shaft on both ends of the Dregs Hoppe to fall on the dumping bracket hook. Using Tregs Hoppe's own weight to achieve slag, this form of work efficiency is low, the position of the slag is fixed, lack of flexibility, but the car is light weight and low cost; the other is to set the slag hook directly on the crane car, and according to Dregs Hoppe's actual size and structural features The gantry hook special spreader is designed. The spreader is hung directly on the stalks on both ends of the Dregs Hoppe through the gantry hook and hinged with the stalk on the Dregs Hoppe. When the gantry hook spreader and the slag bucket are lifted up to the ground, the hydraulic push rod drives the slag hook to realize the avoidance action of the slag hook and the slag bucket truck. When the Dregs Hoppe car continues to lift up to the slag hook, the slag hook Driven by a hydraulic push rod to the eccentric shaft at both ends of the Dregs Hoppe, and then the gantry hook spreader is lowered, and the automatic slag turning in the air is achieved by the self-weight of the Dregs Hoppe. This form has high work efficiency, good flexibility and labor saving, but the cost is higher. A slightly higher.

In the design process, the main technical parameters are determined according to the above actual working conditions, and the working level of the whole machine is determined to be A6 according to the frequency of use; according to the size and capacity of the Dregs Hoppe provided by several major Dregs Hoppe manufacturers, the lifting device can be determined The weight is 45t; due to the high degree of elevation, the car has its own weight and lifting weight. In order to reduce the impact load and reduce the noise, the whole vehicle adopts frequency conversion control and speed regulation; the lifting speed is required to be faster, generally above 12m/min, the trolley The running speed is generally around 30m/min, the running speed of the big car is generally around 40 m/min; the lifting height is generally 30~60m below the track surface, the bottom of the main beam is 9m to the track surface, and the height of the Dregs Hoppe is about 2.5m from the ground. Left and right, in this way, when the air is turned over, avoid dust or mud splash, which is conducive to the dumping of the muck. The span and the length of the cantilever are determined according to the actual situation of the construction site.

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