Idle wheel for excavator for large scale mine

Abstract

Provided is an idle wheel for an excavator for a large scale mine. The wheel includes a wheel body, a shaft, shaft seats and a shaft sleeve; the shaft sleeve is installed in a center hole of the wheelbody, and the shaft penetrates through the shaft sleeve and is matched with the shaft sleeve in a rolling mode; two ends of the shaft are symmetrically provided with two shaft seats, and each shaft seat is fixed to the shaft through a pin; a partition plate is disposed between the shaft sleeve and the wheel body, and the shaft and the wheel body are sealed by a seal assembly; a radial direction surface of the wheel body is designed as a structure shaped like a Chinese character 'ji', so that the radial direction surface constitutes two track surfaces symmetrical along the center surface of the wheel body, and each track surface is an arc surface, so that forces imposed on the wheel body are more uniform. The idle wheel is simple and reliable in structure, and is particularly suitable forthe use of large and ultra large crawler-type construction machinery.

Description

technical field [0001] The invention relates to a guide wheel structure, in particular to a guide wheel structure for a large mining excavator, which belongs to the field of engineering machinery. Background technique [0002] The guide wheels (also known as guide wheels) for large mining excavators are used to guide the track to rotate correctly to prevent the track from running off and off the track. In addition, the guide wheel plays a role of tensioning the track through the tensioning device and buffers the impact of the external load on the whole machine. [0003] At present, the structure of guide wheels for small and medium excavators is as follows: figure 1 As shown, in this structure, the interior of the wheel body is hollow, the track surface of the wheel body is a cylindrical surface instead of an arc surface, the bushing is a T-shaped bushing, the webs on both sides have no ribs, and the oil filling port is on the shaft seat. However, the conventional structur...

AI Technical Summary

Problems solved by technology

However, the conventional structure can no longer meet the requirements of large-scale mining excavators, because large-scale mining excavators are subjected to greater external loads and impacts, and the working conditions are more severe, so a more reliable guide wheel structure is required to meet this working condition

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