Guanhang Mechanical Claw Jack is a Hydraulic Jack with Special Mechanism. Its Bearing Bracket is Not Above the Whole Jack, but in an "l" Shape Below, and Two Springs Are Installed on Both Sides of the Claw Jack.

Generally, Claw Jacks Are Used to Lift Some Heavy Objects with Low Chassis or No Ground Clearance, and the Spring Devices Installed on Both Sides Are Regarded As the Purpose of Rapid Return After the Operation is Completed.

When the Hand Lever of the Claw Jack is Pressed, the Spring in the Retracted State Starts to Stretch and Continuously Applies a Reverse Retracting Force. However, when the Oil Return Valve is Closed, the Claw Jack Will Not Return. Under the Control of the Spring, the Lifting Rate of the Claw Jack Can Ensure a Stable and Uniform Speed.