Rotary vertical shaft sealing device of forward excavator

Abstract

The invention discloses a rotary vertical shaft sealing device of a forward excavator, which comprises a location sleeve and a bearing sleeve, wherein an inner hole of the location sleeve is provided with a location structure arranged on a rotary vertical shaft, the bearing sleeve is provided with an oil charging hole for communicating a lubricating channel of a bearing arranged in the bearing sleeve, and the outer circumferential surface of the location sleeve and the inner circumferential surface of the bearing sleeve are provided with sealing structures for jointly sealing a space of an outlet on the bearing. The invention has the advantages that: compared with the prior art, the rotary vertical shaft sealing device realizes all functions of the prior art under the condition of reducing quantity of sealing elements, is convenient for assembly and disassembly, thereby reducing unsafe factors, deceasing regulation period and labor output, greatly increasing working efficiency, and ensuring that the regulation process is safer and more humane and accords with demands of fast-paced modern production.

Description

technical field [0001] The invention relates to a front shovel excavator, in particular to a front shovel excavator rotary vertical shaft sealing device. Background technique [0002] On the large-scale mine-used shovel excavator, the torque generated by the motor is transmitted through the slewing gear to the slewing ring gear through the slewing device, so that the entire upper device of the excavator performs slewing motion. The lower part of the rotary vertical shaft is supported by self-aligning roller bearings, and the self-aligning roller bearings are lubricated by an automatic lubrication system. Such as figure 1 As shown, the upper sealing device of the rotary vertical shaft bearing of the traditional front shovel excavator includes: a bearing sleeve 6, a positioning sleeve 7, an oil seal 8, an annular baffle 9, bolts 10, and the like. The upper part of the bearing is fixed on the rotary vertical shaft 3 by the positioning sleeve 7 . The annular baffle 9 is fixed...

AI Technical Summary

Problems solved by technology

[0003] As the size of the excavator continues to increase, due to space constraints, the installation of the ring baffle 9 and the oil seal 8 will become more and more difficult

In addition, the oil seal 8 is a vulnerable part and needs to be replaced frequently. It is very troublesome to replace the oil seal 8 each time, which affects work efficiency and increases labor intensity and operating costs.

Images