The principle and function of hydraulic lock

Two-way hydraulic lock is two hydraulically controlled one-way valves used together. It is usually used in load-bearing hydraulic cylinders or motor oil circuits to prevent the hydraulic cylinder or motor from sliding down by itself under the action of heavy objects. When action is required, it must be The other channel supplies oil, and the one-way valve is opened through the internal control oil circuit to connect the oil circuit, so that the hydraulic cylinder or motor can operate.

Due to the structure of the product itself, during the movement of the hydraulic cylinder, due to the dead weight of the load, an instantaneous pressure loss is often caused in the main working chamber, resulting in a vacuum, which closes the one-way valve and then continues to supply oil, causing the pressure in the working chamber to rise again. Open the one-way valve. Due to the frequent opening and closing actions, the load will produce large impact and vibration during the falling process. Therefore, the two-way hydraulic lock is usually not recommended for high-speed and heavy-load conditions, but is often used for long support times and movements. Latching circuit with low speed.