Crane capable of adjusting supporting point

Abstract

The invention discloses a crane capable of adjusting a supporting point. The crane comprises a power box, wherein front and rear end surfaces of the power box are symmetrically and rotatably connectedwith four pairs of wheels in a matched mode; a drive shaft is fixedly connected in the power box; the upper end surface of the drive shaft is fixedly connected with a drive shaft body which upwards extends to the outside; the upper side of the power box is equipped with a rotary box which is rotatably connected with the drive shaft in the matched mode; the tail end of the left side of the upper end of the rotary box is fixedly connected with a cab; a slide box slides to change the position, in a lifting lever, of a supporting rod, so that the supporting point of the crane is changed; the lever principle is utilized to meet different lifting heights and different lifting weight needs through constant motor power; and the rotary box can drive the cab and the lifting lever to rotate together, so that operation is convenient while observation operation of a driver is convenient; and moreover, a rotating function and a lifting function share one motor, so that resources are saved, and thecost is reduced.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a crane with an adjustable supporting point. Background technique [0002] As an indispensable machine in the production of construction and other fields, cranes are currently divided into fixed lifting frames and movable tire or crawler cranes. The maximum lifting weight of tire cranes is often limited by the power of the motor. The heavy height and lifting weight need to switch the lifting mode flexibly, and the control rotation is usually controlled by the rotation of the vehicle, which is cumbersome to operate and has certain safety hazards. The rotation function and lifting function of some cranes with lifting table rotation function are often through independent Two motors are realized, and the cost is relatively high. Contents of the invention [0003] Aiming at the deficiencies of the above-mentioned technologies, the present invention proposes a crane with an adjustabl...

AI Technical Summary

Problems solved by technology

[0002] As an indispensable machine in the production of construction and other fields, cranes are currently divided into fixed lifting frames and movable tire or crawler cranes. The maximum lifting weight of tire cranes is often limited by the power of the motor. The heavy height and lifting weight need to switch the lifting mode flexibly, and the control rotation is usually controlled by the vehicle rotation, the operation is cumbersome, and there are certain safety hazards. The rotation function and lifting function of some cranes with the lifting platform rotation function are often through independent Realized by two motors, the cost is higher

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