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迴转滚盘是挖掘机的一个很重要部件,它联接下部底架和上部平台,并完成机器的迴转工作。挖掘机的迴转滾盘有多种形式,在这里讨论的迴转滚盘是由固定在底架和平台上的上下两整圈的滾道,及在滾道中间放有沿整圈滾道均匀分布的若干个滾子所组成。(见图1)滾子主要承受垂直载荷,倾翻力矩由中央枢轴来承受。当挖掘机工作时,迴转滾盘的许多滾子同时承受载荷,所以决定滚子的压力是一个多次静不定问题,另外由于挖掘机平台和底
The rotary roller disk is a very important part of the excavator. It connects the lower chassis and the upper platform and completes the rotary work of the machine. The excavator’s rotary roller disk has a variety of forms. The rotary roller disk discussed here is composed of two full-circle raceways fixed on the undercarriage and the platform, and a full ring raceway is placed in the middle of the raceway. A uniform distribution of several rollers. (See Figure 1.) The rollers are mainly subjected to vertical loads, and the tilting moment is absorbed by the central pivot. When the excavator is working, many of the rollers of the turntable are subjected to the load at the same time, so determining the pressure of the roller is a matter of multiple uncertainties, in addition to the excavator platform and the bottom