Swing frame structure of underground scraper

Abstract

The invention provides a double-bearing swinging rack of an underground scraper, wherein a front bearing plate and a rear bearing plate are connected by virtue of an upper fixing plate, a front guard plate and a front shaft sleeve are arranged outside the front bearing plate; a rear guard plate is arranged outside the rear bearing plate, a rear shaft sleeve is arranged inside the rear bearing plate, and the axis of the front shaft sleeve and the axis of the rear shaft sleeve are arranged on the same axial line. The invention also provides a rear frame of an underground scraper, wherein a bridge plate is connected with a front upper bearing plate, a rear bearing support and a bridge plate reinforcing plate, a machine body is connected with the bridge plate, the front upper bearing plate and the rear bearing support, an assembling part of the front upper bearing plate and the front lower bearing plate is provided with an axle hole, the rear bearing support is provided with a shaft sleeve. In the underground scraper, the underground double-bearing swinging rack is connected with the underground scraper by virtue of the rear frame of the underground scraper, stress condition of the swinging rack is changed, stress on a cantilever beam is changed into stress on a front bearing point and a rear bearing point, the problem that the fault rate of the underground scraper is high owning to design of the swinging rack of a single-bearing structure, and the service life of the double-bearing swinging rack of the underground scraper is greatly prolonged.

Description

technical field [0001] The invention relates to an underground transportation device and its components, in particular to an underground scraper, a double-supported swing frame of the underground scraper and a rear car frame of the underground scraper. Background technique [0002] The working environment and working conditions of the underground scraper are very harsh. In order to make the underground scraper adapt to the uneven road surface of the stope and increase the stability of the machine during ore loading or transportation, a swing mechanism called a swing frame is designed. . The swing frame is a mechanism that ensures the relative swing of the front and rear frames within a certain angle. The swing frame is arranged on the rear axle and is called the rear axle swing frame. The characteristics of this swing frame are: the rear frame is hinged to the swing frame through the rotary shaft device of the swing frame, and there is enough swing space between the rear ...

AI Technical Summary

Problems solved by technology

[0004]Because the underground working space is small, the existing scraper generally adopts the swing frame design of the rear drive axle as a single support structure for the sake of space utilization. The design structure is simple and the processing is convenient, but there are still some defects in the single-support swing frame, mainly in the following aspects: (1) since the swing axis of the swing frame of the rear axle is installed in the rear longitudinal seat hole in a cantilever manner, the force is not strong Even, it is easy to cause wear of the rotary shaft or premature failure of the bearing, resulting in damage to the swing frame

( 2 ) Also because of the cantilever, the swing frame is not strong enough, the fixing nut is easy to loosen, and it is easy to break during use

(3) The manufacturability of the swing frame is not good, and the internal stress and deformation caused by welding make it difficult to guarantee the machining accuracy

Images