The cranes for truck cranes are classified according to the manufacturer, and can be divided into stone coal truck cranes, Xugong truck cranes, iron truck cranes, and Jianghuan truck cranes. The tonnage of truck cranes is different. It is divided into 2 ton, 3 ton, 5 ton, 6.3 ton, 8 ton, 9 ton, 10 ton, 12 ton, 14 ton, 16 ton, and 20 ton. Different cranes can choose to fold the crane and be retractable Straight arm crane. Legs can also be divided into several types. 1. Radial legs are centered on the center of rotation of the turntable, and four outriggers are projected out from the bottom of the frame. This kind of leg stability will be better, and in the lifting operation, the load is not through the frame, 20 directly on the top of the leg, so that it can effectively reduce the weight and It can reduce the height of the machine's center of gravity and protect the chassis from harm. 2, the frog leg legs are hinged on the fixed leg, with hydraulic cylinders to complete its unfolding action, the structure is relatively simple, the weight is relatively light, the disadvantage is that the span of the frog leg is not Very large, can only be used properly on which tonnage cranes are smaller. 3. When the X-type leg is working, the leg type is showing the X-type, and the gap between it and the ground will be relatively small, and there will be a situation of horizontal displacement in the whole process of supporting the leg. When it is in a small range, the space for heavy objects is larger than that of H-type, so it will also be used in a regular way to use X-type and H-type. It will form a type of post-X-before-H. . 4, H-type legs are installed with two hydraulic cylinders, when the active legs in the outstretched, vertical support when working, because of its support shape so called H, H-type support The characteristic of the leg is that its span distance will be relatively large, and it has very good site adaptability. Now it is also widely used.
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