A kind of crane and construction machinery chassis thereof

Abstract

The invention discloses a crane and an engineering mechanical chassis thereof. The crane comprises the mechanical chassis. A speed-reducing gear box is fixed to the bottom of the mechanical chassis. Aclamping disc groove is formed inside the mechanical chassis in a clamped mode. A clamping disc is clamped in the clamping disc groove. A rotating disc is fixed to the top end of an output shaft of the speed-reducing gear box. Vertical columns are fixed to the center of the top face of the rotating disc. A control box is arranged on the right sides of the vertical columns. Take-up motors are fixedly mounted on the two sides of the top face of the rotating disc. A steel cable wire coil is fixed to a motor shaft of each take-up motor. A supporting rotating shaft is rotationally fixed between supporting plates on the top faces of the vertical columns. Hoisting arms are fixed to the two sides of the rod wall of the supporting rotating shaft. Pulley openings are formed in the two sides of thetop face of each hoisting arm. A plurality of pulleys are mounted inside the pulley openings and on the two side walls of the hoisting arms. Hosting rotating shafts are rotationally fixed into hoisting openings. Hoisting hydraulic rods are fixed to the rod walls of the middles of the hosting rotating shafts. According to the crane and the engineering mechanical chassis thereof, through a double-hydraulic-pump reverse driving mode, the hoisting efficiency of the hoisting arms is improved greatly, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of lifting equipment, in particular to a crane and its construction machinery chassis. Background technique [0002] Cranes, also known as overhead cranes, aerial cranes, cranes, refer to multi-action hoisting machinery that vertically lifts and horizontally transports heavy objects within a certain range. The structure of a crane is usually composed of three parts: one is the frame, and the other is the mechanism ( Including hoisting mechanism, operating mechanism, rotating mechanism, luffing mechanism, etc.), the third is the control system. At present, the lifting mechanism of the crane mostly retracts and unwinds the drum wire rope through the forward and reverse rotation of the drum by the hydraulic motor to realize the hoisting. Many luffing mechanisms use hydraulic pumps to drive the boom to realize the rotation and lifting of the boom. However, due to the large mass of the boom itself and the need to lift heav...

AI Technical Summary

Problems solved by technology

[0002] Cranes, also known as overhead cranes, aerial cranes, cranes, refer to multi-action hoisting machinery that vertically lifts and horizontally transports heavy objects within a certain range. The structure of a crane is usually composed of three parts: one is the frame, and the other is the mechanism ( Including hoisting mechanism, operating mechanism, rotating mechanism, luffing mechanism, etc.), the third is the control system. At present, the lifting mechanism of the crane mostly retracts and unwinds the drum wire rope through the forward and reverse rotation of the drum by the hydraulic motor to realize the hoisting. Many luffing mechanisms use hydraulic pumps to drive the boom to realize the rotation and lifting of the boom. However, due to the large mass of the boom itself and the need to lift heavy objects, a high-power hydraulic pump is required. , which leads to a sudden increase in equipment costs, and because the mechanical chassis is subjected to lateral tension during hoisting, the drive shaft of the rotating mechanism on the mechanical chassis is prone to shaft eccentricity due to long-term lateral force, and even the steering drive shaft may break.