CN106015130B - High thrust high speed hydraulic cylinder and its method of work - Google Patents
High thrust high speed hydraulic cylinder and its method of work Download PDFInfo
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- CN106015130B CN106015130B CN201610527026.0A CN201610527026A CN106015130B CN 106015130 B CN106015130 B CN 106015130B CN 201610527026 A CN201610527026 A CN 201610527026A CN 106015130 B CN106015130 B CN 106015130B
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- cylinder
- accumulator
- high speed
- piston
- chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/17—Characterised by the construction of the motor unit of the straight-cylinder type of differential-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of high thrust high speed hydraulic cylinder, cylinder main body is a seal cavity laterally set, in the front end of cylinder main body, coaxially extension is fixed with a high speed cylinder cylinder barrel, coaxial sleeve is equipped with high speed cylinder piston rod in high speed cylinder cylinder barrel, and high-speed piston bar co-axial seal in high speed cylinder rod chamber slides；One is coaxially installed with cylinder main body through accumulator air chamber and the accumulator piston bar of booster chamber, is fixedly mounted with accumulator piston in the end of the accumulator piston bar of accumulator air chamber front end, accumulator piston sealing is slidably mounted in cylinder main body；It is accumulator fluid chamber between accumulator piston and high speed cylinder piston rod；Pressurized cylinder piston is coaxially formed with the accumulator piston bar of booster intracavitary, pressurized cylinder piston sealing is slidably mounted on booster intracavitary.The present invention is by way of piston accumulator and high speed hydraulic cylinder are directly connected, it is possible to achieve the high thrust speedy carding process of high speed cylinder.
Description
Technical field
The invention belongs to Hydraulic Field, especially a kind of high thrust high speed hydraulic cylinder and its method of work.
Background technology
In all kinds of engineer applied occasions such as impact test, high-speed friction experiment or high speed delivery devices, it usually needs to big
The test platform or subjects of quality are accelerated, quick to reach higher operating rate, this just acceleration system to testing stand
System proposes very high job requirement.Hydraulic system has that thrust is big, the advantage such as compact-sized, is that more satisfactory experiment accelerates
System, still, existing conventional cylinder are all many by fluid flow etc. as power source, its piston rod movement speed
Limitation, it is difficult to which very high output speed is provided.
The content of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, there is provided a kind of high thrust high speed hydraulic cylinder and its work
Make method, have compact-sized, capacity usage ratio is high, and thrust is big, the advantages such as adjustable thrust and output speed are big.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of high thrust high speed hydraulic cylinder, it is characterised in that：Cylinder main body is a seal cavity laterally set, in liquid
Coaxially extension is fixed with a high speed cylinder cylinder barrel for the front end of cylinder pressure main body, and high speed cylinder piston rod coaxially is housed in high speed cylinder cylinder barrel,
High-speed piston bar co-axial seal in high speed cylinder cylinder barrel slides；Cylinder main body interior separations are divided into mutual disconnected accumulator
Air chamber and booster chamber, one is coaxially installed with cylinder main body through accumulator air chamber and the accumulator of booster chamber
Piston rod, accumulator piston is fixedly mounted with the end of the accumulator piston bar of accumulator air chamber front end, accumulator piston sealing
It is slidably mounted in cylinder main body；It is accumulator fluid chamber between accumulator piston and high speed cylinder piston rod；In booster chamber
Pressurized cylinder piston is coaxially formed with interior accumulator piston bar, pressurized cylinder piston sealing is slidably mounted on booster intracavitary.
Moreover, the rear end of accumulator piston bar is coaxially fixed with a gag lever post, gag lever post coaxially extends cylinder main body
Outside rear end, one locker is installed in the gag lever post periphery of cylinder main body rear end.
Moreover, spacing rod rear end is coaxially formed with an axis hole for being used to detect shift length；It is coaxial in cylinder main body rear end
One sensor is installed, the test side of the sensor is co-axially inserted in the axis hole of spacing rod rear end.
Moreover, the axial forward end in accumulator piston bar is coaxially installed with a floating buffer plug.
A kind of method of work of high thrust high speed hydraulic cylinder, it is characterised in that：
(1) before system boot, pressurized cylinder rod chamber, accumulator air chamber, accumulator fluid chamber and high speed cylinder rod chamber are located
In emptying state；
(2) high speed cylinder rod chamber is filled with 1~2MPa high pure nitrogens, is fully retracted high speed cylinder piston rod, while nitrogen will be made
Buffering when being moved for high speed cylinder；
(3) accumulator fluid chamber is filled with hydraulic oil, now hydraulic oil no pressure；
(4) locker closes, the locking of accumulator piston bar position；
(5) accumulator air chamber is filled with high pressure nitrogen until target energy-storage pressure；
(6) locker is opened, and accumulator air chamber high pressure nitrogen instantaneously expands, and promotes the motion of accumulator piston bar by hydraulic pressure
Oil is pushed into high speed cylinder rodless cavity, and the fluid into high speed cylinder rodless cavity promotes high speed cylinder piston rod to move and realizes external output；
(7) accumulator piston bar gradually slows down under floating-type cushion effect until stopping completely；
(8) after high speed cylinder completes impulse stroke, slow down in high speed cylinder rod chamber in the presence of nitrogen until stopping, now
System completes impulse stroke；
(9) pressurized cylinder rod chamber is filled with hydraulic oil, accumulator piston and high speed cylinder piston is retracted；
(10) locker closes, fixed accumulator piston position；
Empty pressurized cylinder rod chamber in hydraulic oil, system return to step (5) at the end of working condition, wait it is next
Working cycles.
The advantages and positive effects of the present invention are：
1st, this hydraulic cylinder instantaneous by accumulator inner high voltage gas expands at a high speed, the high speed of achievable high speed cylinder piston rod
High thrust exports, and meets all kinds of experiment demands.
2nd, this hydraulic cylinder is by adjusting the pressure of gas in accumulator, it is convenient to realizes the regulation of power output.
3rd, this hydraulic cylinder uses piston accumulator and high speed cylinder cascaded structure, and system architecture is compact, small volume.
4th, connected between this hydraulic cylinder accumulator and high speed cylinder without exterior line, avoid high-voltage oil liquid in pipeline, oil
The intraoral pressure loss, system capacity utilization rate greatly improve.
5th, this hydraulic cylinder accumulator uses floating-type cushion structure, reduces to system requirement on machining accuracy, it is possible to achieve
The buffering of accumulator piston.
6th, the nitrogen in this hydraulic cylinder high speed cylinder cylinder barrel is progressively compressed with the motion of piston rod, in effective impulse stroke
Afterwards, the N2 in rod chamber can realize the buffer deceleration to piston rod, make system work more steady.
7th, this hydraulic cylinder, can be with the movement position of real-time monitoring system by adding inbuilt displacement sensor, and is
Unite the important parameters such as real-time movement velocity, acceleration, improve the intelligent level of equipment.
8th, this hydraulic cylinder after working first, and for accumulator air chamber without inflating again, the work for greatly shortening system is accurate
Standby time, system can realize continuous work.
9th, the present invention is by way of piston accumulator and high speed hydraulic cylinder are directly connected, it is possible to achieve high speed cylinder
High thrust speedy carding process, realizes expectation function well, extremely short working time (<0.1s) and shorter accelerating travel (<
1.0m) in, by big mass objects (>1.0t) accelerate to more than 30m/s speed.
Brief description of the drawings
Fig. 1 is structural representation of the hydraulic cylinder in piston rod retracted state；
Fig. 2 is the structural representation that hydraulic cylinder stretches out state in piston rod；
Fig. 3 be in Fig. 1 A-A to sectional view；
Fig. 4 is B-B direction sectional view in Fig. 2.
Reference represents：1 sensor, 2 lockers, 3 pressurized cylinder pistons, 4 accumulator piston bars, 5 accumulator pistons, 6
Floating buffer device, 7 high speed cylinder piston rods, 8 high speed cylinder cylinder barrels, 9 accumulator fluid chambers, 10 accumulator air chambers, 11 pressurized cylinders
Chamber, 12 gag lever posts.
Embodiment
Below in conjunction with the accompanying drawings and the invention will be further described by specific embodiment, and following examples are descriptive
, it is not limited, it is impossible to which protection scope of the present invention is limited with this.
A kind of high thrust high speed hydraulic cylinder, including high speed hydraulic cylinder, piston accumulator and pressurized sensor, hydraulic cylinder
Axial one end installation high speed cylinder piston rod, the axial other end tandem piston formula accumulator of hydraulic cylinder, the piston accumulator
The speed to introduce of lift piston rod；
The present embodiment is illustrated with direction shown in accompanying drawing 1 for convenience of description, and left side is rear portion, right side is anterior, tool
Body structure is：
Cylinder main body is a seal cavity laterally set, and in the front end of cylinder main body, it is high to be fixed with one for coaxial extension
Fast cylinder cylinder barrel 8, coaxial sleeve is equipped with high speed cylinder piston rod 7 in high speed cylinder cylinder barrel, and the high-speed piston bar is same in high speed cylinder cylinder barrel
Sealing is slided；
Cylinder main body interior separations are divided into mutual disconnected accumulator air chamber 10 and booster chamber 11, in hydraulic cylinder master
One is coaxially installed with vivo through accumulator air chamber and the accumulator piston bar 4 of booster chamber, in accumulator air chamber front end
The end of accumulator piston bar be fixedly mounted with accumulator piston 5, accumulator piston sealing is slidably mounted in cylinder main body；Store
It can be accumulator fluid chamber 9 between device piston and high speed cylinder piston rod, liquid feed device is pressed oil by pipeline connection outer liquid；
A floating buffer plug is coaxially installed with the axial forward end of accumulator piston bar, the floating buffer plug is lived with accumulator
Elastic packing chamber is formed between stopper rod, it is possible to achieve the buffering of accumulator piston；
Pressurized cylinder piston 3 is coaxially formed with the accumulator piston bar of booster intracavitary, pressurized cylinder piston sealing is slided
Installed in booster intracavitary；
The rear end of accumulator piston bar is coaxially fixed with a gag lever post 12, and spacing rod rear end is coaxially formed with one and is used for detecting position
The axis hole of distance is moved, gag lever post coaxially extends outside cylinder main body rear end, in the gag lever post periphery of cylinder main body rear end
One locker 2 is installed, the locker is symmetrically mounted on the relative gag lever post that is fixedly clamped in gag lever post both sides；
A sensor 1 is coaxially installed with cylinder main body rear end, after the test side of the sensor is co-axially inserted gag lever post
In the axis hole at end, when gag lever post is movable with accumulator piston bar, sensor can be detected simultaneously by movement position.
The workflow of the high speed hydraulic cylinder is as follows：
(1) before system boot, pressurized cylinder rod chamber, accumulator air chamber, accumulator fluid chamber and high speed cylinder cylinder barrel are in
Emptying state；
(2) high speed cylinder cylinder barrel is filled with 1~2MPa high pure nitrogens, is fully retracted high speed cylinder piston rod, at the same nitrogen using as
Buffering when high speed cylinder moves；
(3) accumulator fluid chamber is filled with hydraulic oil, now hydraulic oil no pressure；
(4) locker closes, as shown in drawings shown in A-A sections, the locking of accumulator piston bar position；
(5) accumulator air chamber is filled with high pressure nitrogen until target energy-storage pressure；
(6) locker is opened, and accumulator air chamber high pressure nitrogen instantaneously expands, and promotes the motion of accumulator piston bar by hydraulic pressure
Oil is pushed into high speed cylinder rodless cavity, and the fluid into high speed cylinder rodless cavity promotes high speed cylinder piston rod to move and realizes external output；
(7) accumulator piston bar gradually slows down under floating-type cushion effect until stopping completely；
(8) after high speed cylinder completes impulse stroke, slow down in high speed cylinder cylinder barrel in the presence of nitrogen until stopping, is now
As shown in Figure 2, now system completes impulse stroke to the structure of system；
(9) pressurized cylinder rod chamber is filled with hydraulic oil, accumulator piston and high speed cylinder piston is retracted；
(10) locker closes, fixed accumulator piston position；
Empty pressurized cylinder rod chamber in hydraulic oil, system return to step (5) at the end of working condition, wait it is next
Working cycles.
Although disclosing embodiments of the invention and accompanying drawing for the purpose of illustration, those skilled in the art can manage
Solution：Do not departing from the present invention and spirit and scope of the appended claims in, it is various replace, change and modifications all be it is possible,
Therefore, the scope of the present invention is not limited to embodiment and accompanying drawing disclosure of that.
Claims (5)
- A kind of 1. high thrust high speed hydraulic cylinder, it is characterised in that：Cylinder main body is a seal cavity laterally set, in hydraulic pressure Coaxially extension is fixed with a high speed cylinder cylinder barrel for the front end of cylinder main body, and high speed cylinder piston rod coaxially is housed in high speed cylinder cylinder barrel, The end of high speed cylinder piston rod is coaxially fixed with high speed cylinder piston, and high-speed piston bar co-axial seal in high speed cylinder cylinder barrel is slided It is dynamic；Cylinder main body interior separations are divided into mutual disconnected accumulator chamber and booster chamber, are co-axially mounted in cylinder main body Have one through accumulator chamber and the accumulator piston bar of booster chamber, at the end of the accumulator piston bar of accumulator air chamber front end Portion is fixedly mounted with accumulator piston, and accumulator piston sealing is slidably mounted on accumulator intracavitary, and accumulator piston divides accumulator chamber It is divided into accumulator air chamber and accumulator fluid chamber；It is accumulator fluid chamber between accumulator piston and high speed cylinder piston；Pressurized cylinder piston is coaxially formed with the accumulator piston bar of booster intracavitary, pressurized cylinder piston sealing is slidably mounted on Booster intracavitary is divided into booster rod chamber and booster rodless cavity by booster intracavitary, pressurized cylinder piston.
- 2. high thrust high speed hydraulic cylinder according to claim 1, it is characterised in that：The rear end of accumulator piston bar is coaxially solid Equipped with a gag lever post, gag lever post coaxially extends outside cylinder main body rear end, in the gag lever post periphery of cylinder main body rear end One locker is installed.
- 3. high thrust high speed hydraulic cylinder according to claim 2, it is characterised in that：Spacing rod rear end is coaxially formed with one and is used for Detect the axis hole of shift length；A sensor is coaxially installed with cylinder main body rear end, the test side of the sensor is coaxially inserted In the axis hole for entering spacing rod rear end.
- 4. high thrust high speed hydraulic cylinder according to claim 1, it is characterised in that：In the axial forward end of accumulator piston bar It is coaxially installed with a floating buffer plug.
- 5. high thrust high speed hydraulic cylinder according to claim 1, it is characterised in that：Method of work is：(1) before system boot, booster rod chamber, accumulator air chamber, accumulator fluid chamber and high speed cylinder cylinder barrel are in emptying State；(2) high speed cylinder cylinder barrel is filled with 1~2MPa high pure nitrogens, is fully retracted high speed cylinder piston rod, while nitrogen will be used as at a high speed Buffering when cylinder moves；(3) accumulator fluid chamber is filled with hydraulic oil, now hydraulic oil no pressure；(4) locker closes, the locking of accumulator piston bar position；(5) accumulator air chamber is filled with high pressure nitrogen until target energy-storage pressure；(6) locker is opened, and accumulator air chamber high pressure nitrogen instantaneously expands, and promotes the motion of accumulator piston bar to push away hydraulic oil To high speed cylinder rodless cavity, the fluid into high speed cylinder rodless cavity promotes high speed cylinder piston rod to move and realizes external output；(7) accumulator piston bar gradually slows down under floating-type cushion effect until stopping completely；(8) after high speed cylinder completes impulse stroke, slow down in high speed cylinder rod chamber in the presence of nitrogen up to stopping, now system Complete impulse stroke；(9) booster rod chamber is filled with hydraulic oil, accumulator piston bar and high speed cylinder piston is retracted；(10) locker closes, fixed accumulator piston position；Empty booster intracavitary hydraulic oil, system return to step (5) at the end of working condition, wait next working cycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527026.0A CN106015130B (en) | 2016-07-06 | 2016-07-06 | High thrust high speed hydraulic cylinder and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527026.0A CN106015130B (en) | 2016-07-06 | 2016-07-06 | High thrust high speed hydraulic cylinder and its method of work |
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| Publication Number | Publication Date |
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| CN106015130A CN106015130A (en) | 2016-10-12 |
| CN106015130B true CN106015130B (en) | 2018-01-23 |
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| CN201610527026.0A Active CN106015130B (en) | 2016-07-06 | 2016-07-06 | High thrust high speed hydraulic cylinder and its method of work |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018084260A (en) * | 2016-11-22 | 2018-05-31 | Smc株式会社 | Booster |
| CN107542725A (en) * | 2017-09-05 | 2018-01-05 | 燕山大学 | single-acting reciprocating hydraulic actuator |
| CN110578720A (en) * | 2018-06-07 | 2019-12-17 | 布柯玛蓄能器（天津）有限公司 | Energy accumulator with supercharging function |
| CN109578380A (en) * | 2019-01-17 | 2019-04-05 | 大连诺美液压件有限公司 | A kind of locking pin with accumulation of energy pressure holding function |
| CN110374958B (en) * | 2019-08-23 | 2024-07-05 | 天津优瑞纳斯液压机械有限公司 | Accumulator and hydraulic cylinder compound device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB539808A (en) * | 1939-04-28 | 1941-09-24 | Siam | Improvements in hydraulic or hydro-pneumatic control devices |
| CA2001707C (en) * | 1989-10-27 | 1993-10-12 | Jophn De Kok | Air-oil pressure intensifier cylinder |
| CN2769581Y (en) * | 2005-03-08 | 2006-04-05 | 太仓法路机械技术开发有限公司 | Gas-liquid booster cylinder |
| CN104863920B (en) * | 2015-04-21 | 2017-03-01 | 太原理工大学 | A kind of combination load cylinder |
| CN204961435U (en) * | 2015-09-25 | 2016-01-13 | 东莞市巨力气动液压设备有限公司 | Quick pressurized cylinder is kept apart to oil gas |
| CN105443458A (en) * | 2015-12-27 | 2016-03-30 | 天津尚吉液压设备有限公司 | Single-acting pneumatic hydraulic intensifier |
| CN105443460B (en) * | 2015-12-27 | 2019-01-01 | 天津尚吉液压设备有限公司 | A kind of gas-liquid pressure-boosting cylinder assembly |
| CN205918665U (en) * | 2016-07-06 | 2017-02-01 | 天津优瑞纳斯液压机械有限公司 | High thrust high -speed hydraulic cylinder |
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2016
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