来源：https://www.sdqyjn.com/ 日期：2021-05-24 浏览量：
The air shovel mainly uses the compressed air provided by the air compressor as the power to make the hammer body in it move back and forth, and strike the shovel bit, so as to realize the chiseling operation of the shovel on metal and building materials. It is mainly used in casting, welding, construction and furnace maintenance. So, what are the characteristics of air shovel? What role does the press play?
Features of air shovel:
1. In mining industry, the product is used to cut off coal seam and break soft ore;
2. In the construction of civil engineering, railway, highway, wharf and power station, it is used to drill holes in broken soil layer and excavate earthwork;
3. The work is stable, safe and reliable;
4. The unique shock absorber starts gradually;
5. The comfort of the operator is greatly improved, the vibration is greatly reduced, and the slow start is better controlled.
Pneumatic pick is a tool powered by compressed air of air compressor. Compressed air is distributed at both ends of cylinder body by tubular distribution valve in turn, which makes hammer body carry out reciprocating impact motion, and makes pick drill into work object, resulting in splitting into blocks.
The hand-held pneumatic tool uses compressed air to push the piston to move back and forth, so that the pick keeps hitting. Used for mining, road construction, etc.
The air pick is composed of a valve distribution mechanism, an impact mechanism and a pick drill. The impact mechanism is a thick wall cylinder, in which there is an impact hammer which 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 valve box.
There are many longitudinal air holes around the cylinder wall, which compress the spring of the plunger valve and connect with the air passage. One end of these air holes is connected with the air distribution valve, push the handle sleeve, and the other end is connected with 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 or out air. The plunger valve is in the normally closed state of cutting off the air passage under the action of the spiral spring.
Make the impact hammer move back and forth regularly in the cylinder. When the hammer moves forward, the hammer head strikes the drill tail; When the impact hammer moves backward, the gas in the cylinder is sealed in the valve box to form a flexible cushion. The gas in the cylinder is sealed in the valve box, and it will impact forward after the air is redistributed. Hammerhead striking drill tail; When the impact hammer moves backward, the starting device of the air pick is located in the handle sleeve. A plunger valve controls the air path between the air inlet pipe and the air distribution valve, and the plunger valve is in the normally closed state of cutting off the air path under the action of the spiral spring.
When the air pick is working, make the pick against the working face, and connect the other end to the air cylinder. Push the handle sleeve, compress the spring of the plunger valve and connect the air passage. There are many longitudinal air holes around the cylinder wall, and the air distribution valve will automatically distribute air. The air distribution valve box is installed at the rear end of the cylinder. It makes the impact hammer continuously move back and forth to strike the drill tail and break the construction body.