CN201475079U

CN201475079U - Gas-liquid-linked hydraulic cylinder

Info

Publication number: CN201475079U
Application number: CN200920156033XU
Authority: CN
Inventors: 单才华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2010-05-19
Anticipated expiration: 2019-05-13

Abstract

The utility model discloses a gas-liquid-linked hydraulic cylinder comprising a cylinder body, a main piston, a pressurizing piston, an auxiliary valve, a lever, a conducting valve and the like; energy for compressing gas is converted into the energy of oil so as to realize the working cycle processes of fast stroke, working stroke and return stroke; the cylinder body and the main piston forms a hydraulic cavity and a return cavity; the cylinder body and the pressurizing valve forms a gas-liquid-linked cavity and a pressurizing piston return cavity; the auxiliary valve, the lever, the conducting valve and the like are fixed on the pressurizing valve and move along with the pressurizing valve. When the compressed gas enters the gas-liquid-linked cavity and the pressurizing piston return cavity, the main piston realizes the fast stroke; and when the pressurizing piston return cavity is in exhaust condition, the main piston realizes the working stroke. When the compressed gas enters the return cavity and the pressurizing piston return cavity, the main piston returns. The gas-liquid-linked hydraulic cylinder has compact structure, simple control, reliable action and long service life, is widely applied to equipment such as press machines, drawing machines, automatic production lines and the like, and realizes long-range transmission of energies.

Description

A kind of Pneumatic and hydraulic linked cylinder

Technical field

The present invention relates to a kind of oil hydraulic cylinder, especially a kind of Pneumatic and hydraulic linked cylinder belongs to the hydraulics field.

Background technique

Along with the extensive use of fluid technique in modern enterprise is produced, also more and more higher for oil hydraulic cylinder, the isostructural requirement of cylinder, the pumping plant formula application system that can realize the long-range conveying of energy has become the main flow that present fluid technique is used, and simple Pneumatic actuator or hydraulic pressure installation have not satisfied the needs of existing hydraulic equipment application; In enterprise practical was produced, Pneumatic actuator although pneumatic energy reaches the requirement of remote energy conveying preferably, also can only require to use in the less occasion more to pressure at clamping, setting tool etc. because of itself existing shortcomings such as pressure is low, impact force is big; And hydraulic pressure installation itself has the remote energy difficulty of transportation, influence problem such as site environment when using, and generally can only be to design the separate unit operation, and therefore machine no-load ratio height, exists shortcomings such as big, the on-the-spot overall noise of energy waste is big during practical application; The appearance of gas-liquid linked device not only can solve top contradiction well, and can get up pneumatic and advantages hydraulic pressure, and therefore, gas-liquid linked device has obtained application on increasing occasion and equipment.But shortcomings such as it is huge, complicated that existing Pneumatic and hydraulic linked cylinder all exists structure, and the life-span is low.

Summary of the invention

The objective of the invention is to address the above problem, provide a kind of compact structure, beautiful shape, control is simple, the life-span is long, the Pneumatic and hydraulic linked cylinder of reliable in action.

The objective of the invention is to realize by following scheme: Pneumatic and hydraulic linked cylinder is made of cylinder body, main piston, charged piston, Auxiliary valves, lever, conducting valve etc., becomes the transformation of energy of pressurized gas the fluid energy to make main piston realize the whole circulation process of rapid stroke, working stroke and backhaul stroke; Cylinder body and main piston form hydraulic pressure cavity and backhaul chamber, and cylinder body and charged piston form gas-liquid linked chamber and charged piston backhaul chamber, and Auxiliary valves, lever, conducting valve etc. are installed on the charged piston, move with charged piston; The processing of described charged piston center is porose, and the hole connects gas-liquid linked chamber and hydraulic pressure cavity, and nose end is equipped with conducting valve; Auxiliary valves, lever and spring also are installed on the described charged piston; When pressurized gas enters gas-liquid linked chamber and charged piston backhaul chamber, when the pressurized gas back-pressure in the charged piston backhaul chamber is lived charged piston, the promotion Auxiliary valves moves, Auxiliary valves promotes the lever harrow conducting valve and opens, gas-liquid linked chamber and hydraulic pressure cavity are connected, the pressurized gas promotion low pressure fluid that enters in the gas-liquid linked chamber enters hydraulic pressure cavity fast through conducting valve, promotes the main piston fast moving, realizes the rapid stroke of main piston; When charged piston backhaul chamber is in exhaust condition, Auxiliary valves has not had pressure, spring promotes conducting valve and closes, hydraulic pressure cavity forms the cavity of a sealing, simultaneously, conducting valve is by the backhaul of lever pushing Auxiliary valves, at this moment, charged piston has not had back pressure, pressurized gas in the gas-liquid linked chamber promotes charged piston and moves, and the plunger position of charged piston enters hydraulic pressure cavity, makes the low pressure fluid in the hydraulic pressure cavity of sealing form high-voltage oil liquid, promote main piston and move at a slow speed, realize the working stroke of main piston; When pressurized gas enters backhaul chamber and charged piston backhaul chamber, when the pressurized gas in the charged piston backhaul chamber promotes the charged piston backhaul, the promotion Auxiliary valves moves, Auxiliary valves is opened conducting valve by lever, conducting valve is connected hydraulic pressure cavity and gas-liquid linked chamber, fluid in the hydraulic pressure cavity is back to gas-liquid linked chamber, and the pressurized gas in the backhaul chamber promotes the main piston backhaul, realizes the backhaul stroke of main piston; Described Pneumatic and hydraulic linked cylinder is four chamber axial series settings.

The invention discloses a kind of structure of Pneumatic and hydraulic linked cylinder, in its whole actuation cycle process, piston and plunger are not thrown off Sealing all the time, therefore, the operating life of this Pneumatic and hydraulic linked cylinder is longer, can be widely used on the equipment such as press machine, stretcher, Presseshydraulic and automatic production line, and can realize the job requirement of the long-range conveying of energy, in enterprise practical is produced,, just can realize the production running of whole piece production line as long as enter the production scene with a tracheae.

Description of drawings

Fig. 1 is the overall structure figure of Pneumatic and hydraulic linked cylinder;

Fig. 2 is the view of Pneumatic and hydraulic linked cylinder rapid stroke when initial;

Fig. 3 finishes preceding view for the Pneumatic and hydraulic linked cylinder rapid stroke;

Fig. 4 is the view of Pneumatic and hydraulic linked cylinder working stroke when initial;

Fig. 5 finishes preceding view for the Pneumatic and hydraulic linked cylinder working stroke;

Fig. 6 is the view of Pneumatic and hydraulic linked cylinder backhaul stroke when initial;

Fig. 7 is the view before Pneumatic and hydraulic linked cylinder backhaul stroke finishes.

Component title among the figure: 1. cylinder body; 2. main piston; 3. charged piston; 4. spring; 5. conducting valve; 6. lever; 7. Auxiliary valves; 8. gas-liquid linked chamber; 9. charged piston backhaul chamber; 10. hydraulic pressure cavity; 11. backhaul chamber; 12. air valve; 13. air valve; 14. tracheae; 15. tracheae; 16. tracheae;

Embodiment

Pneumatic and hydraulic linked cylinder carries out work by the fluid that pressurized gas promotes in the gas-liquid linked chamber, realizes the actuation cycle process of its rapid stroke, working stroke and backhaul by air valve (12), air valve (13).

As Fig. 2, air valve (12), air valve (13) all place the I position, pressurized gas enters charged piston backhaul chamber (9) by tracheae (15), back-pressure is lived charged piston (3), and it is mobile to promote Auxiliary valves (7), Auxiliary valves (7) promotes lever (6) and opens conducting valve (5), gas-liquid linked chamber (8) and hydraulic pressure cavity (10) conducting; Pressurized gas enters gas-liquid linked chamber (8) promotion low pressure fluid by tracheae (14) and enters hydraulic pressure cavity (10) through conducting valve (5), promote main piston (2) fast moving, realizing the rapid stroke of main piston (2), is that the main piston rapid stroke finishes preceding view as Fig. 3.

As Fig. 4, after rapid stroke is finished, air valve (13) is placed the II position, charged piston backhaul chamber (9) is in exhaust condition, Auxiliary valves (7) loses the pressure of pressurized gas, and spring (4) promotes conducting valve (5) and closes, and hydraulic pressure cavity (10) forms an enclosed cavity, simultaneously, conducting valve (5) drive lever (6) promotion Auxiliary valves (7) resets; At this moment, charged piston (3) has not had back pressure yet, pressurized gas continues to enter gas-liquid linked chamber (8), promoting charged piston (3) moves, the plunger position of charged piston (3) enters hydraulic pressure cavity (10), make the low pressure fluid of hydraulic pressure cavity (10) form high-voltage oil liquid, promote main piston (2) and move at a slow speed, realize the working stroke of main piston (2); As Fig. 5 is that the main piston working stroke finishes preceding view.

As Fig. 6, after working stroke is finished, air valve (13) is placed the I position, air valve (12) places the II position, pressurized gas enters charged piston backhaul chamber (9) by tracheae (15), promote charged piston (3) backhaul, promoting Auxiliary valves (7) simultaneously moves, Auxiliary valves (7) promotes lever (6) and opens conducting valve (5), gas-liquid linked chamber (8) and hydraulic pressure cavity (10) conducting, pressurized gas enters main piston backhaul chamber (11) by tracheae (16), promotes main piston (2) backhaul, realizing the backhaul stroke of main piston (2), is that the backhaul stroke finishes preceding view as Fig. 7.

After backhaul finished, Pneumatic and hydraulic linked cylinder had just been finished the circulation overall process of rapid stroke, working stroke and a backhaul, the action above repeating, and Pneumatic and hydraulic linked cylinder just can carry out circuit work.

Claims

1. Pneumatic and hydraulic linked cylinder, it comprises cylinder body (1), main piston (2), charged piston (3), spring (4), conducting valve (5), lever (6) and Auxiliary valves (7), cylinder body (1) forms hydraulic pressure cavity (10) and backhaul chamber (11) with main piston (2), cylinder body (1) forms gas-liquid linked chamber (8) and charged piston backhaul chamber (9) with charged piston (3), it is characterized in that: the center processing of described charged piston (3) is porose, the hole connects gas-liquid linked chamber (8) and hydraulic pressure cavity (10), nose end is equipped with conducting valve (5), Auxiliary valves (7) also is installed on the described charged piston (3), lever (6) and spring (4), Auxiliary valves (7) is realized opening or closing conducting valve (5) by lever (6) and spring (4), and gas-liquid linked chamber (8) and hydraulic pressure cavity (10) are switched on or switched off.

2. Pneumatic and hydraulic linked cylinder according to claim 1 is characterized in that: described spring (4), conducting valve (5), lever (6) and the Auxiliary valves (7) that is installed on the charged piston (3) moves with charged piston (3).

3. Pneumatic and hydraulic linked cylinder according to claim 1 is characterized in that: described Pneumatic and hydraulic linked cylinder is four chamber axial series settings.