CN105114502A - Gas-liquid damping system - Google Patents

Gas-liquid damping system Download PDF

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Publication number
CN105114502A
CN105114502A CN201510532312.1A CN201510532312A CN105114502A CN 105114502 A CN105114502 A CN 105114502A CN 201510532312 A CN201510532312 A CN 201510532312A CN 105114502 A CN105114502 A CN 105114502A
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CN
China
Prior art keywords
cylinder
gas
port
liquid
hydraulic
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Pending
Application number
CN201510532312.1A
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Chinese (zh)
Inventor
江涛
沙文瀚
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WUHU RESEARCH INSTITUTE OF INSTITUTE TECHNOLOGY OF AUTOMOBILE Co Ltd
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WUHU RESEARCH INSTITUTE OF INSTITUTE TECHNOLOGY OF AUTOMOBILE Co Ltd
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Priority to CN201510532312.1A priority Critical patent/CN105114502A/en
Publication of CN105114502A publication Critical patent/CN105114502A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a gas-liquid damping system and belongs to the field of pneumatic mechanical equipment. The gas-liquid damping system comprises a gas-liquid damping cylinder and a one-way throttling valve. The one-way throttling valve comprises a one-way valve and a throttling valve which are connected in parallel. When the gas-liquid damping system is used, liquid in the gas-liquid damping cylinder achieves one-way throttling through the one-way valve and the throttling valve. According to the gas-liquid damping system, compressed air is used as a power source, due to the fact that incompressibility of the oil liquid is used and the flow of the oil liquid is controlled, stable movement of a piston is obtained and the movement speed of the piston is adjusted; compared with a pneumatic cylinder, the gas-liquid damping cylinder moves stably, position stopping is accurate, the working speed and position of the pneumatic cylinder can be accurately controlled, and noise is low; compared with a hydraulic cylinder, the economical efficiency of the gas-liquid damping cylinder is good.

Description

Gas-liquid damped system
Technical field
The present invention relates to pneumatic machinery apparatus field, particularly gas-liquid damped system.
Background technique
As everyone knows, the working medium of pneumatic linear actuator is pressurized air, and its main feature is that mechanical structure and control system thereof are simple, but its stretching speed and half-way wayward, and very large by the impact of load change.And the working medium of oil hydraulic cylinder is incompressible liquid, have stretching speed steadily, can midway at any time resident, load capacity greatly and not by advantages such as load change affect, but the hydraulic control system using oil hydraulic cylinder is more complicated, and easily there is the faults such as pipeline leakage in the process using oil hydraulic cylinder.
Existing conventional pneumatic cylinder operationally, because pneumatic linear actuator adopts the larger air of compressibility to make medium, makes when outside load variations is larger, then can produce " creeping " or " certainly walking " phenomenon, make the job insecurity of pneumatic linear actuator.
Summary of the invention
In order to solve at least one aspect of the above-mentioned problems in the prior art and defect, the invention provides a kind of gas-liquid damped system.Described technological scheme is as follows:
An object of the present invention is to provide a kind of gas-liquid damped system.
According to an aspect of the present invention, provide a kind of gas-liquid damped system, described gas-liquid damped system comprises gas-liquid damping cylinder and one-way throttle valve, described one-way throttle valve comprises one-way valve and the throttle valve of connection alongside one another, in use, the liquid in described gas-liquid damping cylinder realizes one-way throttle by described one-way valve and throttle valve.
Particularly, described gas-liquid damping cylinder comprises:
Cylinder body, described cylinder body comprises the cylinder and oil hydraulic cylinder that are arranged side by side each other, and described one-way throttle valve is connected with described oil hydraulic cylinder, and wherein said cylinder is arranged on the first end of cylinder body, described oil hydraulic cylinder is arranged on the second end of cylinder body, and wherein first end and the second end are oppositely arranged;
Piston rod, described piston rod is arranged in described cylinder and described oil hydraulic cylinder;
First piston and the second piston, described first piston is all connected with described piston rod with the second piston, and described first piston is arranged in described cylinder, and described second piston is arranged in described oil hydraulic cylinder;
Further, described piston rod runs through described oil hydraulic cylinder and described cylinder successively along the longitudinal direction of described cylinder body and extends to the outside of described cylinder body.
Particularly, the cavity of described cylinder is separated into the first air chamber and the second air chamber that are arranged side by side by described first piston, and described first air chamber is provided with the first gas port, and described second air chamber is provided with the second gas port,
Described oil hydraulic cylinder is separated into the first hydraulic pressure cavity and the second hydraulic pressure cavity that are arranged side by side by described second piston, described first hydraulic pressure cavity is provided with the first hydraulic port, described second hydraulic pressure cavity is provided with the second hydraulic port, and described one-way throttle valve is communicated with described first hydraulic pressure cavity and the second hydraulic pressure cavity
Wherein said first air chamber, the second air chamber, the first hydraulic pressure cavity and the second hydraulic pressure cavity are arranged between the first end of described cylinder body and the second end successively along the longitudinal direction of described cylinder body.
Further, the fluid port of described one-way valve is communicated with described first hydraulic port, and the feed liquor port of described one-way valve is communicated with described second hydraulic port,
The feed liquor port of described throttle valve is communicated with described first hydraulic port, and the fluid port of described throttle valve is communicated with described second hydraulic port.
Particularly, when gas enters described second air chamber from described second gas port, described piston rod drives described first piston and the second piston to move along the longitudinal direction of described cylinder body towards the first end of described cylinder body, gas in described cylinder is discharged from the first gas port, and liquid in described oil hydraulic cylinder is discharged from described first hydraulic port, and passed through described throttle valve and flow to described second hydraulic port.
Particularly, when gas enters described first gas cavity from described first gas port, described piston rod drives described first piston and the second piston to move along the longitudinal direction of described cylinder body towards the second end of described cylinder body, gas in described cylinder is discharged from described second gas port, and the liquid in described oil hydraulic cylinder flows out from described second hydraulic port, and flow to described first hydraulic port by described one-way valve.
Further, described gas-liquid damped system also comprises lubricating cup, and the opening of described lubricating cup is communicated with described second hydraulic port with the feed liquor port of described one-way valve, the fluid port of described throttle valve respectively.
Particularly, in the inner chamber of described cylinder body, be provided with the cylinder for separating described cylinder and described oil hydraulic cylinder.
Particularly, described cylinder is provided with the circular hole passed through for described piston rod.
The beneficial effect of technological scheme provided by the invention is: gas-liquid damped system provided by the invention take pressurized air as power source, utilize the incompressibility of fluid and control fluid flow to the movement velocity of the easy motion and regulating piston that obtain piston, compared with pneumatic linear actuator, gas-liquid damping cylinder stable movement, off-position is accurate, makes it possible to accurately to control pneumatic linear actuator operating rate and position and noise is little; Compared with oil hydraulic cylinder, the good economy performance of gas-liquid damping cylinder.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas-liquid damped system according to an embodiment of the invention.
Wherein, 100 gas-liquid damped systems, 10 one-way throttle valves, 11 one-way valves, the feed liquor port of 111 one-way valves, the fluid port of 112 one-way valves, 12 throttle valve, the feed liquor port of 121 throttle valve, the fluid port of 122 throttle valve, 20 cylinder bodies, 21 cylinders, 211 first air chamber, 212 second air chamber, 22 oil hydraulic cylinders, 221 first hydraulic pressure cavity, 222 second hydraulic pressure cavity, the first end of 23 cylinder bodies, second end of 24 cylinder bodies, 25 cylinders, 30 piston rods, 40 first pistons, 50 second pistons, 60 lubricating cups, the opening of 61 lubricating cups.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
See Fig. 1, it illustrates gas-liquid damped system 100 according to an embodiment of the invention.Gas-liquid damped system 100 comprises gas-liquid damping cylinder and one-way throttle valve 10, and one-way throttle valve 10 comprises one-way valve 11 and the throttle valve 12 of connection alongside one another.In use, the liquid in gas-liquid damping cylinder realizes one-way throttle by one-way valve 11 and throttle valve 12.
As shown in Figure 1, gas-liquid damping cylinder comprises cylinder body 20, piston rod 30, first piston 40 and the second piston 50.Particularly, be provided with cylinder 25 in cylinder body 20, cylinder body 20 has been separated into the cylinder 21 and oil hydraulic cylinder 22 that are arranged side by side each other by cylinder 25.One-way throttle valve 10 is connected with oil hydraulic cylinder 22, and cylinder 21 is arranged on the first end 23 of cylinder body 20, and oil hydraulic cylinder 22 is arranged on the second end 24 of cylinder body 20, and wherein first end 23 and the second end 24 are oppositely arranged.Those skilled in the art can understand, cylinder 25 can be arranged on the intermediate portion of cylinder body 10, by cylinder body 10 equipartition, namely the volume of cylinder 21 and oil hydraulic cylinder 22 is equal, can certainly be configured such that the volume of cylinder 21 and oil hydraulic cylinder 22 is unequal, those skilled in the art can correspondingly select as required.
Cylinder 25 is provided with the circular hole (not shown) passed through for piston rod 30.Piston rod 30 runs through oil hydraulic cylinder 22 and cylinder 21 successively along the longitudinal direction of cylinder body 20 and extends to the outside of cylinder body 20.And first piston 40 is all connected with piston rod 30 with the second piston 50.Particularly, first piston 40 is arranged in cylinder 21, and the second piston 50 is arranged in oil hydraulic cylinder 22.Particularly, the cavity of cylinder 21 is separated into the first air chamber 211 and the second air chamber 212 be arranged side by side by first piston 40, wherein the first air chamber 211 is provided with the first gas port (not shown), and the second air chamber is provided with the second gas port (not shown).Oil hydraulic cylinder 22 is separated into the first hydraulic pressure cavity 221 and the second hydraulic pressure cavity 222 be arranged side by side by the second piston 50, wherein the first hydraulic pressure cavity 221 is provided with the first hydraulic port (not shown), second hydraulic pressure cavity 222 is provided with the second hydraulic port (not shown), and one-way throttle valve 10 is communicated with the first hydraulic pressure cavity 221 and the second hydraulic pressure cavity 222.Wherein the first air chamber 211, second air chamber 212, first hydraulic pressure cavity 221 and the second hydraulic pressure cavity 222 are arranged between the first end 23 of cylinder body and the second end 24 successively along the longitudinal direction of cylinder body 20.
As shown in Figure 1, the fluid port 112 of one-way valve 11 is communicated with the first hydraulic port 221, and the feed liquor port 111 of one-way valve is communicated with the second hydraulic port 222; The feed liquor port 121 of throttle valve 12 is communicated with the first hydraulic port 221, and the fluid port 122 of throttle valve 12 is communicated with the second hydraulic port 222.In an example of the present invention, gas-liquid damped system 100 also comprises lubricating cup 60.The opening 61 of lubricating cup 60 is communicated with the second hydraulic port 222 with the feed liquor port 111 of one-way valve 11, the fluid port 122 of throttle valve respectively.
The concrete structure of gas-liquid damped system 100 is further illustrated below by the working principle describing gas-liquid damped system 100 in detail.
Gas-liquid damping cylinder in gas-liquid damped system 100 is actually cylinder 21 and oil hydraulic cylinder 22 is in series, and two cylinders adopt same piston rod 30.The ouput force of piston rod 30 is the thrust (or pulling force) of pressurized gas in cylinder 21 and the difference of the resistance of hydraulic oil in oil hydraulic cylinder 22.Oil hydraulic cylinder 22 itself can't help oil sources fuel feeding, and is just driven by the first piston 40 in cylinder 21, thus produces the effect of damping and speed governing.Between first hydraulic port and the second hydraulic port of oil hydraulic cylinder 22, one-way valve 11 and the throttle valve 12 of hydraulic pressure is housed.When the second gas port of cylinder 21 right-hand member is to the second air chamber 212 air feed, piston rod 30 in cylinder 21 overcomes load and drives the second piston 50 in first piston 40 and oil hydraulic cylinder 22 to left movement, namely move along the longitudinal direction of cylinder body 10 towards the first end 23 of cylinder body 10, at this moment the first gas port exhaust of cylinder 21, and the first hydraulic pressure cavity 221 of oil hydraulic cylinder 22 left end is by the first hydraulic port oil extraction, now one-way valve 11 is closed, therefore oil can only be input to the second hydraulic port and the lubricating cup opening of oil hydraulic cylinder 22 right-hand member through throttle valve 12, enter afterwards in the second oil hydraulic cylinder 222 and lubricating cup 60.By regulating the aperture of throttle valve 12, the speed of the motion of first piston 40 and the second piston 50 can be controlled in the process.
When the first gas port of cylinder 21 left end is to the first air chamber 211 air feed, piston rod 30 in cylinder 21 overcomes load and drives the second piston 50 in first piston 40 and oil hydraulic cylinder 22 to move right, namely move along the longitudinal direction of cylinder body 10 towards the second end 24 of cylinder body 10, at this moment the second gas port exhaust of cylinder 21, second hydraulic pressure cavity 222 of oil hydraulic cylinder 22 right-hand member is by the second hydraulic port oil extraction, now one-way valve 11 is opened, throttle valve 12 cuts out, therefore the oil in the oil in lubricating cup 60 and the second hydraulic pressure cavity 22 can only be input to the first hydraulic port of oil hydraulic cylinder 22 left end through one-way valve 11, enter afterwards in the first oil hydraulic cylinder 221.
The beneficial effect of technological scheme provided by the invention is: gas-liquid damped system provided by the invention take pressurized air as power source, utilize the incompressibility of fluid and control fluid flow to the movement velocity of the easy motion and regulating piston that obtain piston, compared with pneumatic linear actuator, gas-liquid damping cylinder stable movement, off-position is accurate, makes it possible to accurately to control pneumatic linear actuator operating rate and position and noise is little; Compared with oil hydraulic cylinder, the good economy performance of gas-liquid damping cylinder.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a gas-liquid damped system, is characterized in that,
Described gas-liquid damped system comprises gas-liquid damping cylinder and one-way throttle valve, and described one-way throttle valve comprises one-way valve and the throttle valve of connection alongside one another,
In use, the liquid in described gas-liquid damping cylinder realizes one-way throttle by described one-way valve and throttle valve.
2. gas-liquid damped system according to claim 1, is characterized in that,
Described gas-liquid damping cylinder comprises:
Cylinder body, described cylinder body comprises the cylinder and oil hydraulic cylinder that are arranged side by side each other, and described one-way throttle valve is connected with described oil hydraulic cylinder, and wherein said cylinder is arranged on the first end of cylinder body, described oil hydraulic cylinder is arranged on the second end of cylinder body, and wherein first end and the second end are oppositely arranged;
Piston rod, described piston rod is arranged in described cylinder and described oil hydraulic cylinder;
First piston and the second piston, described first piston is all connected with described piston rod with the second piston, and described first piston is arranged in described cylinder, and described second piston is arranged in described oil hydraulic cylinder.
3. gas-liquid damped system according to claim 2, is characterized in that,
Described piston rod runs through described oil hydraulic cylinder and described cylinder successively along the longitudinal direction of described cylinder body and extends to the outside of described cylinder body.
4. gas-liquid damped system according to claim 3, is characterized in that,
The cavity of described cylinder is separated into the first air chamber and the second air chamber that are arranged side by side by described first piston, and described first air chamber is provided with the first gas port, and described second air chamber is provided with the second gas port,
Described oil hydraulic cylinder is separated into the first hydraulic pressure cavity and the second hydraulic pressure cavity that are arranged side by side by described second piston, described first hydraulic pressure cavity is provided with the first hydraulic port, described second hydraulic pressure cavity is provided with the second hydraulic port, and described one-way throttle valve is communicated with described first hydraulic pressure cavity and the second hydraulic pressure cavity
Wherein said first air chamber, the second air chamber, the first hydraulic pressure cavity and the second hydraulic pressure cavity are arranged between the first end of described cylinder body and the second end successively along the longitudinal direction of described cylinder body.
5. gas-liquid damped system according to claim 4, is characterized in that,
The fluid port of described one-way valve is communicated with described first hydraulic port, and the feed liquor port of described one-way valve is communicated with described second hydraulic port,
The feed liquor port of described throttle valve is communicated with described first hydraulic port, and the fluid port of described throttle valve is communicated with described second hydraulic port.
6. gas-liquid damped system according to claim 5, is characterized in that,
When gas enters described second air chamber from described second gas port, described piston rod drives described first piston and the second piston to move along the longitudinal direction of described cylinder body towards the first end of described cylinder body, gas in described cylinder is discharged from the first gas port, and liquid in described oil hydraulic cylinder is discharged from described first hydraulic port, and passed through described throttle valve and flow to described second hydraulic port.
7. gas-liquid damped system according to claim 6, is characterized in that,
When gas enters described first gas cavity from described first gas port, described piston rod drives described first piston and the second piston to move along the longitudinal direction of described cylinder body towards the second end of described cylinder body, gas in described cylinder is discharged from described second gas port, and the liquid in described oil hydraulic cylinder flows out from described second hydraulic port, and flow to described first hydraulic port by described one-way valve.
8. gas-liquid damped system according to claim 7, is characterized in that,
Described gas-liquid damped system also comprises lubricating cup, and the opening of described lubricating cup is communicated with described second hydraulic port with the feed liquor port of described one-way valve, the fluid port of described throttle valve respectively.
9. the gas-liquid damped system according to any one of claim 2-8, is characterized in that,
The cylinder for separating described cylinder and described oil hydraulic cylinder is provided with in the inner chamber of described cylinder body.
10. gas-liquid damped system according to claim 9, is characterized in that,
Described cylinder is provided with the circular hole passed through for described piston rod.
CN201510532312.1A 2015-08-24 2015-08-24 Gas-liquid damping system Pending CN105114502A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864147A (en) * 2016-04-26 2016-08-17 英诺威阀业有限公司 Damping oil cylinder
CN106812853A (en) * 2017-03-20 2017-06-09 占土生 One kind buffering shock-absorbing platform and its method of work

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602166B4 (en) * 1995-01-31 2004-09-30 Toyota Jidosha K.K., Toyota Self-pumping hydropneumatic vibration damper with devices for variable control of the damping force
CN103267081A (en) * 2013-05-10 2013-08-28 河南理工大学 Piezoelectric power generation type damping-adjustable hydro-pneumatic suspension
CN203223514U (en) * 2013-05-03 2013-10-02 罗小安 Outer-circulation type oil damper
CN104389940A (en) * 2014-11-21 2015-03-04 常州市锐金轮机械配件有限公司 Adjustable damping buffer air cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602166B4 (en) * 1995-01-31 2004-09-30 Toyota Jidosha K.K., Toyota Self-pumping hydropneumatic vibration damper with devices for variable control of the damping force
CN203223514U (en) * 2013-05-03 2013-10-02 罗小安 Outer-circulation type oil damper
CN103267081A (en) * 2013-05-10 2013-08-28 河南理工大学 Piezoelectric power generation type damping-adjustable hydro-pneumatic suspension
CN104389940A (en) * 2014-11-21 2015-03-04 常州市锐金轮机械配件有限公司 Adjustable damping buffer air cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864147A (en) * 2016-04-26 2016-08-17 英诺威阀业有限公司 Damping oil cylinder
CN106812853A (en) * 2017-03-20 2017-06-09 占土生 One kind buffering shock-absorbing platform and its method of work
CN106812853B (en) * 2017-03-20 2019-05-07 占土生 A kind of buffering shock-absorbing platform and its working method

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Application publication date: 20151202