In what ways can speed control of hydraulic cylinders be achieved?

In what ways can speed control of hydraulic cylinders be achieved?

Hydraulic cylinder is a kind of hydraulic energy into mechanical energy, do linear reciprocating motion or oscillating motion of the hydraulic actuator. It consists of cylinder barrel and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device.

The speed control of the device can be realized in the following ways:

1, throttle adjustment: by changing the flow of the device to control its speed. Throttle has two types of manual adjustment and automatic adjustment, manual adjustment is by rotating the knob to change the opening size of the throttle valve, automatic adjustment is through the pressure and flow sensor to automatically adjust the opening size of the throttle valve.

2, speed control valve adjustment: speed control valve is a combination of throttle valve and relief valve, by changing the size of the opening of the speed control valve, you can change the flow of hydraulic oil, thereby controlling the speed of the hydraulic cylinder.

3, proportional valve adjustment: proportional valve is a kind of valve can be adjusted in proportion to the size of the opening, through the electric signal to automatically adjust the flow of hydraulic oil, so as to control the speed of the device.

4, servo valve adjustment: servo valve is a high-precision control valve, through the feedback signal to automatically adjust the flow of hydraulic oil, thereby controlling the speed of the device.

In addition to the above ways, you can also change the displacement of the hydraulic pump, the use of differential connection and other ways to control the speed. The speed of the hydraulic cylinder depends on the flow rate of the hydraulic oil and the piston area of the hydraulic cylinder, so the speed control needs to be specifically adjusted in combination with the actual situation.