Swiveling mechanism and engineering machinery with swiveling mechanism

Abstract

The invention discloses a swiveling mechanism and an engineering machinery with the swiveling mechanism. The swiveling mechanism includes a first component and a second component which can rotate reversely, the first component includes at least two roller columns, the roller column can be rotary installed on the first component body; the second component includes a center line and a ring shape curve surface coinciding with a swiveling shaft line of the swiveling mechanism, the ring shape curve surface cooperates with the roller column peripheral, preferably, a first face of the second component cooperates with a first face of the first component for forming a first cooperating surface. The roller column is rotary installed on a first component body, cooperation between the ring shape curve surface and the roller column peripheral belongs to rolling cooperation which can reduce swiveling resistance of the swiveling mechanism. Compared with the bearing type swiveling mechanism, the swiveling mechanism can reduce manufacturing and using cost. The invention provides the swiveling mechanism with little swiveling resistance, simple structure and strong maintenance from a new technique angle.

Description

technical field [0001] The invention relates to a mechanical connection mechanism, in particular to a turning mechanism, and also relates to a construction machine with the turning mechanism. Background technique [0002] As we all know, construction machinery such as excavators, cranes, concrete distribution racks and concrete pump trucks all have corresponding booms for predetermined operations; and it is also necessary to adjust the positional relationship between the boom and the chassis or chassis according to the position of the working surface. In order to facilitate the adjustment of the boom, generally a turning mechanism is provided between the boom and the chassis or the chassis, so that the boom can rotate within a range of 360 degrees relative to the chassis or the chassis. In addition, in other engineering machinery or equipment, there is also a slewing mechanism to achieve relative adjustment of the position of appropriate components. [0003] The swivel mech...

AI Technical Summary

Problems solved by technology

However, the bearing-type slewing mechanism also has its own defects; on the one hand, the slewing bearing requires high machining accuracy, and the bearing rolling body needs to be specially processed to provide its strength, which makes its manufacturing cost very high. In turn, the manufacturing cost of the bearing-type slewing mechanism is very high. Generally speaking, under the same specification, the cost of the bearing-type slewing mechanism is 3-6 times that of the tray-type slewing mechanism; in large construction machinery, the manufacturing and production of slewing bearings More difficult, more difficult to mass produce

On the other hand, in use, a corresponding lubricating mechanism is required to maintain good lubrication of the slewing bearing 300; the maintainability of the slewing bearing 300 is low, and when a failure occurs, it is generally maintained by replacing the slewing bearing 300. This also increases the use cost and maintenance cost of the bearing type slewing mechanism

[0009] In short, the prior art cannot provide a slewing mechanism with low slewing resistance and low manufacturing and maintenance costs.

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