The gas spring is a kind of liftable spring that can save labor. It can be divided into self-locking gas springs (such as the bottom lift of the seat, the backrest of the boss chair, etc.), and the self-locking gas spring (such as the lift of the car tail box and the closet door). Support)) The structure of the gas spring is mainly composed of a sleeve, a piston and a piston rod. High-pressure air or high-pressure nitrogen is added into the sleeve. The pressure difference is generated due to the unevenness of the two ends of the piston, and the piston and the piston rod are moved and supported. Or heavy objects.
Chisels are classified in different shapes according to different uses:
Flat chisel: the cutting edge is flat, the cutting edge and the chisel body is an inverted isosceles triangle, mainly used for opening square holes or repairing some square holes;
Chisel,chisel for hammer drill,chisel for stone,impact chisel,stone chisel Behappy Crafts (suzhou)Co.,Ltd , https://www.behappyindustry.com
Oblique chisel: the blade is 45° Angle, the blade and chisel body is an inverted right triangle, mainly used for repair, most of the dead corners for carving and carving repair;
Gouge: the cutting edge is semicircular, mainly used for opening circular or elliptical holes;
U type chisel: the cutting edge is U-shaped, which is rare now, mainly used for carving and repair;