GB/T 6247.3-2013Rock drilling machines and portable power tools—Terminology—Part 3: Accessories,parts and mechanism (English PDF)

3.1 Air motor pneumaticengine

Compressed air or gas powered, push the piston (4.1.1), the blade (5.5) or the like output gear when reciprocated or rotary motion

Mechanical work, so that the output shaft of an impact, vibration or rotation of power mechanism.

Note 1. The air motor can not be used independently when no independent housing.

Note 2. The rotary engine has a pneumatic piston engine vane engine, gear and engine turbine engines, usually used as a movable pneumatic tools

Power unit or power core parts of an air motor; pneumatic shock engines typically used as an impact pneumatic tools, power unit.

3.2 Valve compressed-airdistributingmechanism

With the valve group compressed-airdistributingvalve

Mounted drills, pneumatic tools or pneumatic machinery inside for compressed air distribution control means main drive mechanism movement.

Note 1. The piston air motor, using a rotary valve mechanism to control piston reciprocates through the crank rod linkage effect of the motor shaft

Generating a continuous rotational motion.

Note 2. The pneumatic rock drill, DTH hammer or impact pneumatic tools, using a shuttle valve mechanism to control piston or hammer reciprocates.

3.2.1 Active valve Valve compressed-airdistributingmechanismofdrivingvalve

Rock drill, DTH hammer or impact pneumatic tools cylinder (3.11) equipped with push valve bore, driven by compressed air directly commutation

Air Supply (3.2).