Table 4 Relevant parameters of hydraulic rod.

From: Dynamical Behavior of Coal Shearer Traction-swing Coupling under Corrected Loads

Designation of rod

Position of rod

Screw specification

maximum rod travel /mm

Rod travel for pre-tension/mm

lckx

Lower goaf

M56 × 4

3460

6

lcks

Upper goaf

M56 × 4

4370

7

lcmx

Lower coalface

M56 × 4

3460

6

lcms

Upper coalface

M56 × 4

6080

10