A gas-hydraulic compound drive type speed-increasing cylinder device

Abstract

The invention relates to a speed-up cylinder device, and specifically discloses a gas-hydraulic compound driven speed-up cylinder device, which includes a drive cylinder and a speed cylinder. The drive cylinder includes a cylinder barrel I and a front end connected to the front and rear ends of the cylinder barrel I Cover I and rear end cover I; the cylinder I is provided with a variable-area piston that reciprocates along its axial direction, and the variable-area piston is a segmented structure and includes sequentially fixed connections from back to front, and the longitudinal sectional area is sequentially Reduced first piston section, second piston section, third piston section and fourth piston section; the speed cylinder includes cylinder barrel II, front end cover II and rear end cover II connected to the front and rear ends of cylinder barrel II; The cylinder II includes an inner cylinder, a middle cylinder and an outer cylinder that are coaxially sleeved from the inside to the outside in sequence, and the inner cylinder is provided with an inner piston that reciprocates along its axial direction; the present invention has limited installation space. The driving stroke is improved under the circumstances, and the speed can be adjusted.

Description

technical field [0001] The invention relates to a speed-increasing cylinder device, in particular to a gas-liquid composite driving type speed-increasing cylinder device. Background technique [0002] The traditional pneumatic cylinder or hydraulic cylinder uses gas or oil as the medium to push the piston and its piston rod forward or retract, so that the pressure of the gas or oil can be converted into mechanical energy through the pneumatic cylinder or the hydraulic cylinder, and drive the The mechanism connected to the outer end of the piston rod; among them, the booster cylinder device uses the difference in the effective area of ​​the piston and the plunger to obtain high pressure output in the local area of ​​the hydraulic system, which is generally used in printing, bending, punching, forging, Punching, folding, pressing, extrusion, pressing, riveting, riveting, cutting, etc.; and the speed-increasing cylinder device is composed of a piston cylinder and a plunger cyli...

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Problems solved by technology

[0003] In the prior art, patent 200820041505.2 discloses a hydraulic speed increasing cylinder, and patent 201210421164.2 discloses a speed increasing oil cylinder device, which pushes the built-in small plunger through the main cylinder piston to increase the speed. The driving stroke is also limited in the case, and the speed is not adjustable

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