Double toggle rod self-locking clamping device

Abstract

The invention discloses a double toggle rod self-locking clamping device which comprises a driving mechanism and a toggle rod force-increasing self-locking clamping mechanism. The driving mechanism comprises a linear motor, an active piston and a hydraulic cylinder; one end of the active piston is fixedly connected with the output end of the linear motor, and the other end is provided with a liquid medium; the driving mechanism is used for driving an output mechanism and a reset mechanism through pipes; each pipe is provided with a controllable switch valve; the toggle rod force-increasing self-locking clamping mechanism comprises at least two toggle rod groups; each toggle rod group comprises an upper toggle rod, a lower toggle rod and a first-stage toggle rod; the upper toggle rod is articulated with the lower toggle rod; the first-stage toggle rod is articulated with the upper toggle rod; and the first-stage toggle rods are articulated together and the articulation points are located between an output piston and a reset piston. The driving mechanism of the double toggle rod self-locking clamping device adopts the Pascal's principle, takes the fluid within a sealed space as the transmission medium and uses the piston with a small diameter to push the piston with a large diameter to move to realize the force increase and the stroke reduction. The double toggle rod self-locking clamping device can be used for clamping rapidly with large clamping force at high efficiency.

Description

technical field [0001] The invention relates to a clamping device, in particular to a clamping device which adopts a toggle mechanism for self-locking and boosting force. Background technique [0002] Whether it is traditional machinery manufacturing or modern machinery manufacturing, clamping devices are essential. The commonly used clamping methods are mainly as follows: (1) cam clamping; (2) hydraulic cylinder clamping; (3) toggle self-locking clamping. The disadvantage of the cam type clamping method is that the labor intensity is high when the workers operate, and the clamping is unreliable and unsafe. The disadvantage of the hydraulic cylinder clamping device is that the quality of the hydraulic components is not high, which is easy to cause leakage and make the pressure unstable. This requires a pressure maintaining circuit in the hydraulic system, which is costly and complicated to control. In order to solve the shortcomings of the above two clamping methods, the c...

AI Technical Summary

Problems solved by technology

The disadvantages of the cam clamping method are: the labor intensity is high when the workers operate, and the clamping is unreliable and unsafe.

The disadvantage of the hydraulic cylinder clamping device is that the quality of the hydraulic components is not high, which is easy to cause leakage and make the pressure unstable. This requires a pressure maintaining circuit in the hydraulic system, which is costly and complicated to control.

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