Features of fork cylinder

During the operation of the fork cylinder, the thrust of the air pressure will produce certain inertia, so the piston cannot stop immediately during the reciprocating movement. Therefore, the end covers at both ends of the cylinder will often be collided. In order to avoid this situation, the air cushion should be equipped, that is, it is mainly used to protect the end cover, which can prevent the end cover from colliding with the piston.

The variable fork type cylinder is equipped with a buffer valve. The buffer capacity can be changed by adjusting the opening of the buffer valve. The buffer stroke should not be too long. Because the buffer seal has throttling effect, the piston's action response will be slow.

Range of use of variable fork cylinder: when the cylinder moves at a high speed, the variable fork cylinder needs to be selected. There is no correct method to calculate the buffer effect, which needs to be adjusted according to the actual operation; Because of the high movement speed and large impact energy, it is necessary to adjust the opening of the buffer throttle valve to obtain a higher buffer effect.


Variable fork cylinder: a certain orifice is open to form back pressure, which plays a buffering role. Increasing a certain orifice can increase the movement speed of the cylinder.

Under what circumstances can the selection of fork type cylinder and buffer mechanism not be used

If the moving speed is slow, the drag load is small, or the inner diameter of the air pipe is small, it is unnecessary to select this air cushion or buffer mechanism. For example, if the cylinder diameter is too small, the diameter of the buffer boss is relatively large, and the return speed of the fork type cylinder is too fast, the "recoil" phenomenon will occur. Please pay attention to the kicking phenomenon when using it. Therefore, whether the air cushion and buffer mechanism adopts this air cushion buffer device should be based on the speed of the air cushion movement Drag the size of the load to select.

The rubber buffer or hydraulic buffer can also be used for the buffer device of the fork type cylinder.

When the rubber buffer is used for buffering, it is sufficient to select the fork type cylinder with elastic rubber seal as the buffering material when the air buffer is not needed. When the piston of the cylinder moves at high speed and the drag load is large, the hydraulic buffer is easy to be impacted. At this time, the hydraulic buffer installed on the end plate can absorb relatively large kinetic energy for buffering.

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