The functions of the driving mechanism directly affect drilling efficiency,borehole quality and other technological performances of the drilling machine.

The functions of trenchless rig's driving mechanism affect its drilling efficiency, bore hole quality and other technologyical performances directly.

Design on reciprocate straight line type feed mechanism in multi－ blade saw tools;

Based on the introduction of the principle of numerical control transformation for horizontal lathes feed mechanism economically, the whole structure of CAD system on numerical control transformation for horizontal lathes feed mechanism is proposed.

The feed mechanism is playing an important role in precision and micro machining.

Decoupling control of a maglev feeding mechanism;

Magnetic force coupling in maglev feeding mechanism;

The sawing speed curve is unchangeable, but the feed speed curve can be different with different length ratio of members of the feeding mechanism.

Different types of feeding mechanism of No-dig guiding boring system (GBS) are introduced, and the characteristics of each mechanism are analyzed.

Basic requirements to the feeding mechanism of No Dig drill are pointed out.

The paper emphatically introduced current horizontal directional drilling rig both in China and abroad about the transmission and driving mode of the power unit,feeding mode of feeding mechanism,clamping and loosing device,the chassis and the mechanism of drill stem mounting & dismounting device with the analysis on their advantages and disadvantages.