Briefly introduce the Foot Clamp

Source：m.peuw.cn Release date： 2025-08-20

The Foot Clamp is a commonly used tool in geological drilling to clamp drilling tools or casing at the hole opening. Its main characteristics and working principle are as follows:
1. Structural composition: usually composed of eccentric seat, shaft, slip, connecting rod, crank, etc. Some hydraulic horse clamps also include components such as oil cylinders and pull rods.
2. Working principle: Using the self weight of the drill rod to force the slip to move downward, causing the drill rod to clamp tighter and produce a self-locking effect. Specifically, when clamping the drill rod, the two eccentric seats with elliptical heads rotate downwards along their pivot points, thereby pushing the slip forward to clamp the drill rod. When releasing the drill rod, the eccentric seat can be rotated upwards with its fulcrum by stepping on the pedal of the eccentric seat, thereby releasing the slip and drill rod.
3. Type: It can be divided into mechanical and hydraulic types. Mechanical systems are mostly foot operated, while hydraulic systems are driven by hydraulic cylinders.
4. Function: It can provide reliable clamping force, avoid drill running, and ensure the safety and stability of drilling work.
5. Advantages and disadvantages: The advantage is that it has self-locking clamping and automatic compensation functions, and the clamping force increases with the increase of the weight of the drill rod, which is beneficial for protecting the drill rod. The disadvantage is that traditional mechanical wooden horse clamps have high labor intensity and are prone to getting stuck when drilling inclined holes.

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