Pitching device for a large arm of a steering machine

Abstract

The invention relates to a large arm pitching device of a steering machine, comprising a driving device, a driving support arm, a car body, a load-carrying frame, a hydraulic support column at the bottom of a side car, a counterweight device, an arc-shaped pull rod arm, a multi-purpose connecting pulley shaft, and a long Arm, long arm rotating support structure, double arm connecting shaft, wheel skirt, double wheel, wheel axle, wheel frame. The present invention optimizes the pitching problem of the big arm of the steering machine, changes the traditional hydraulic structure, and improves it into a motor-type structure to drive the equipment. This type of structure has the advantages of environmental protection, energy saving, convenient maintenance, simple structure and stable performance. The characteristics of the equipment, the use of adjustable counterweight structure, can prevent the situation of overturning, the hydraulic support column at the bottom of the side car, strengthen the stability of the car body, and the structure of the double wheel makes the car body more stable, the wheel skirt The setting can ensure the stability of the car body when the double-wheel structure is paralyzed, and should be popularized and used.

Description

technical field [0001] The invention relates to the technical field of dumper unloading, in particular to a pitching device for a large arm of a turner. Background technique [0002] The turner is an important part of the dumper unloading system, and it is an extremely critical device for the unloading efficiency of the dumper unloading system. The pitching mechanism of the large arm of the steering machine and the lifting and latching system are important components of the pulling and picking up of the steering machine, and a key operation link in the dumper unloading system. At present, the boom pitching mechanism of the steering machine equipment mainly adopts rack cylinder + balance cylinder drive mode and rack cylinder + counterweight drive form. The advantages and disadvantages of these two methods are as follows: The advantages of the rack cylinder + balance cylinder drive mode are large. The boom pitch is stable, the buffer is small, simple, and the positioning is a...

AI Technical Summary

Problems solved by technology

At present, the boom pitching mechanism of the steering machine equipment mainly adopts rack cylinder + balance cylinder drive mode and rack cylinder + counterweight drive form. The advantages and disadvantages of these two methods are as follows: The advantages of the rack cylinder + balance cylinder drive mode are large. The boom pitch is stable, the buffer is small, simple, and the positioning is accurate; the disadvantage is that the rack cylinder and the balance cylinder need to work in coordination, and the requirements for control and adjustment are very high; it is difficult for the hydraulic system to determine the cause and location of the fault, which brings great inconvenience to the on-site maintenance personnel. very demanding

The rack cylinder + counterweight drive form is stable and reliable in pitching, and accurate in positioning; the disadvantage is that the impact is slightly larger than that of the balanced cylinder

These two forms of boom pitch drive are both hydraulically driven by rack cylinders. Their common disadvantage is that the service life of rack cylinders is generally not long due to the frequent movements of the booms. Generally, they have to be replaced in 2-4 years; if the quality of rack cylinders 1. If the adjustment of the hydraulic pitching system of the steering machine is not in place, if it is not closed, the service time will be shorter, and sometimes it will be broken in one or two months, which seriously affects the unloading efficiency of the dumper system

At the same time, due to problems such as the assembly accuracy of hydraulic components, oil leakage and oil leakage often occur in the entire hydraulic system. Leakage will reduce the efficiency of the system and affect the stability and accuracy of the transmission.

In addition, the oil leakage of the hydraulic system has caused serious oil pollution of the entire steering wheel. According to statistics, 70% of hydraulic system failures are caused by hydraulic oil pollution.

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