The working principle of a pneumatic pick

A pneumatic pick is a handheld construction tool powered by compressed air that uses impact to break hard objects. It is a handheld implement, therefore it requires a compact structure and portability.

The pneumatic pick is composed of a pneumatic mechanism, an impact mechanism, and a pick drill. The impact mechanism is a thick walled cylinder with an impact hammer that can move back and forth along the inner wall of the cylinder. The tail of the pickaxe is inserted into the front end of the cylinder, and the rear end of the cylinder is equipped with a distribution valve box.

There are many longitudinal air holes around the cylinder wall, which compress the spring of the plunger valve and connect to the ventilation circuit. One end of these air holes is connected to the distribution valve, the push handle sleeve, and the other end is connected to the cylinder. The length of each air hole is configured according to the movement requirements of the impact hammer, so as to take turns in air intake or exhaust. The plunger valve is in a normally closed state under the action of the spiral spring, causing the impact hammer to move back and forth regularly in the cylinder.

When the impact hammer moves forward, the hammer head strikes the drill tail; When the impact hammer moves backwards, the gas inside the cylinder is sealed in the distribution valve box, forming a flexible buffer cushion. The gas inside the cylinder is sealed in the distribution valve box, and it is then impacted forward after re distribution. Hammer head strikes the end of the drill bit; When the impact hammer moves backwards, the starting device of the pneumatic pick is located inside the handle sleeve. There is a plunger valve between the air inlet duct and the air distribution valve to control the air circuit, and the plunger valve is in a normally closed state of cutting off the air circuit under the action of the spiral spring.

When working with a pneumatic pick, the pick is pressed against the construction surface, and the other end is connected to a cylinder. The handle sleeve is pushed and compressed to compress the spring of the plunger valve, which is connected to the ventilation path. There are many longitudinal air holes around the cylinder wall, and the gas distribution valve automatically distributes gas. The rear end of the cylinder is equipped with a gas distribution valve box. Make the impact hammer continuously move back and forth, strike the drill tail, and break the construction body. A pneumatic pick is a handheld implement composed of a pneumatic mechanism, an impact mechanism, and a pick drill. Therefore, it requires a compact structure and portability.