Abstract: A belt-driven linear module includes a tensioning assembly and a drive belt. The tensioning assembly includes a support shaft and a bearing. The support shaft is configured to be installed at a driven end of the linear module. The bearing includes an inner ring and an outer ring. The inner ring is positioned on the support shaft, and the outer ring is configured to be wrapped by the drive belt of the linear module so as to tension the drive belt of the linear module.

Abstract: A hydraulic valve comprises: a spool; and a valve body defining a valve chamber for receiving the spool, wherein the spool is adapted to linearly reciprocate within the valve chamber in an axial direction, the valve chamber at least comprises a pressure chamber and a first working chamber, between which a first valve body shoulder is provided on the valve body, and the spool has a first spool shoulder adapted to contact with or axially disengage from the first valve body shoulder in order to hydraulically isolate the pressure chamber from the first working chamber or communicate the pressure chamber with the first working chamber.