Rail grinding is an important part of line repair work and an effective means to prevent and control rail diseases. Grinding can greatly improve the wheel-rail contact relationship, prevent and delay the occurrence of rail diseases such as contact fatigue, wear and tear, wave grinding (abbreviated as wave grinding), repair or reduce rail surface diseases, reduce the risk of rail breakage, and extend the service life and maintenance cycle of rail equipment.

The rail surface diseases that can be solved by grinding mainly include fatigue cracks, spalling blocks, wave grinding, abrasions, scratches, fat edges, uneven wear, poor gloss and so on. In addition, rail grinding can also be used to solve the problem that the flatness of the 100-meter rail tail in some sections of the main line exceeds the standard by about 2 m (in most cases, it is low collapse).

(Internal combustion portable rail sander)

principle of operation

The motor is driven by V-belt to make the spindle (grinding wheel) rotate, and then the vertical feed grinding movement is realized by rotating the handwheel through the lead screw and nut, and the horizontal feed grinding is mainly realized by the horizontal movement of the small frame on the big frame.

A worm gear pair is installed on the drag plate, which can make the grinding wheel tilt 30 degrees left and right to meet the needs of various inclined grinding. Push the big frame to move repeatedly along the longitudinal direction of the track to complete the grinding work.

Main structure: consists of two parts:

1. There are four large frames with single rim rollers moving on the track.

2. A trolley (grinding device) with four rims can move horizontally along the vertical track direction on the large and small frames.

The above is the introduction and working principle, hope to adopt.