CN106930988A - Sound state bidirectional hydraulic loading device and its control method based on accumulator - Google Patents
Sound state bidirectional hydraulic loading device and its control method based on accumulator Download PDFInfo
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- CN106930988A CN106930988A CN201710181809.2A CN201710181809A CN106930988A CN 106930988 A CN106930988 A CN 106930988A CN 201710181809 A CN201710181809 A CN 201710181809A CN 106930988 A CN106930988 A CN 106930988A
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- ball valve
- solenoid ball
- hydraulic
- hydraulic cylinder
- accumulator
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of sound state bidirectional hydraulic loading device based on accumulator and its control method, loading device includes accumulator, fuel tank, hydraulic cylinder, proportional pressure control valve, the first to the 6th pipeline and first to fourth Solenoid ball valve；Fuel tank is connected with the left chamber of hydraulic cylinder by the first pipeline, is connected with the right chamber of hydraulic cylinder by second pipe；Accumulator is connected with the left chamber of hydraulic cylinder by the 3rd pipeline, is connected with the right chamber of hydraulic cylinder by the 4th pipeline；First to fourth Solenoid ball valve is correspondingly arranged in first to fourth pipeline respectively；Proportional pressure control valve one end is connected by the 5th pipeline with fuel tank, the other end is connected by the 6th pipeline with accumulator.The present apparatus can also realize the function that unloading and accumulator pressurize by controlling 4 different on off operating modes of Solenoid ball valve.The present invention does not need power source and hydraulic oil pump, simple structure, full-featured, with low cost, highly versatile.
Description
Technical field
The present invention relates to hydraulic loading system field, more particularly to a kind of sound state bidirectional hydraulic loading based on accumulator
Device and its control method.
Background technology
In hydraulic pressure, air pressure, electric actuator R＆D process, loading device design is an essential part.Hydraulic pressure
Loading device be it is a kind of through frequently with loading device, be widely used for the test confirmatory experiment and practical application of actuator
In.With continuing to develop for Actuator technique, requirement to hydraulic loading device also more and more higher not only needs loading device work
Make reliable and stable, also require that hydraulic loading device is full-featured, cost performance is high, maintainability good.However, conventional hydraulic loaded
Device is generally pressurized and complicated both for the actuator design of a certain specific model using bulky oil pump
Servo valve control system be controlled, its unitary function, poor universality, and expensive.
The Chinese patent of Publication No. CN103089749 discloses a kind of portable intelligent hydraulic loading device, the device
Comprising elements such as motor, oil pump, solenoid directional control valve, proportional amplifiers, overall volume is small, light portable and is easily integrated peace
Dress.But servomotor cost is higher, and whole system complex operation is, it is necessary to the working condition of frequent controlled motor.Additionally,
Pump endlessly fuel feeding is needed in loading procedure, energy ezpenditure is also than larger.
The Chinese patent of Publication No. CN101342932 discloses a kind of passive loading system of varying load power steering wheel, the dress
Put and be made up of elements such as pump, motor, 4 load cylinders, the true stressing conditions of steering wheel are simulated by changing loading moment in real time.But
Its test-bed needs multiple overflow valves and oil pump, increased the complexity and cost of system, reduces hydraulic loading device
Stability, while also needing to pump endlessly fuel feeding, energy dissipation is big.
The content of the invention
The technical problems to be solved by the invention are directed to involved defect in background technology, there is provided one kind is based on storing
Can device sound state bidirectional hydraulic loading device and its control method, can realize the loading of active/passive, static state/dynamic bidirectional,
Unloading and the function of accumulator pressurization.
The present invention uses following technical scheme to solve above-mentioned technical problem：
Sound state bidirectional hydraulic loading device based on accumulator, comprising accumulator, fuel tank, hydraulic cylinder, proportional pressure control valve, first
To the 6th pipeline and first to fourth Solenoid ball valve；
The hydraulic cylinder includes cylinder body, piston and piston rod, wherein, the piston is arranged in cylinder body, and cylinder body is divided into a left side
Chamber and right chamber；Described piston rod one end is fixedly connected with the piston, the other end stretches out output end of the left chamber as hydraulic cylinder；
The fuel tank is connected with the left chamber of hydraulic cylinder by the first pipeline, is connected with the right chamber of hydraulic cylinder by second pipe；
The accumulator is connected with the left chamber of hydraulic cylinder by the 3rd pipeline, is connected with the right chamber of hydraulic cylinder by the 4th pipeline；
First to fourth Solenoid ball valve is correspondingly arranged in first to fourth pipeline respectively；
Described proportional pressure control valve one end is connected by the 5th pipeline with fuel tank, the other end is connected by the 6th pipeline with accumulator,
For preventing accumulator internal pressure too high；
The accumulator is used to provide high pressure fuel source, and the fuel tank is used for repairing, and first to fourth Solenoid ball valve is used respectively
In the on off operating mode for controlling its correspondence pipeline.
Used as sound state bidirectional hydraulic loading device of the present invention based on accumulator, the present invention also includes Loading Control mould
Block, the Loading Control module includes controller, displacement transducer and the first to the 3rd pressure sensor, the controller
It is electrically connected with displacement transducer, the first to the 3rd pressure sensor, first to fourth Solenoid ball valve respectively；
Institute's displacement sensors are arranged at the piston rod of the hydraulic cylinder, for measuring the displacement of piston rod, and are transmitted
To the controller；
The first pressure sensor, second pressure sensor, the 3rd pressure sensor are separately positioned on the left chamber of hydraulic cylinder, liquid
The right chamber of cylinder pressure, the exit of accumulator, for sense where at hydraulic pressure and pass it to the controller；
The controller be used for according to the sensed data of the first to the 3rd pressure sensor, displacement transducer control described first to
4th Solenoid ball valve works.
The invention also discloses it is a kind of should be based on accumulator sound state bidirectional hydraulic loading device control method, comprising
Procedure below：
When hydraulic loading device carries out passive loading to the right and hydraulic loading device needs power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device carries out passive loading to the left and hydraulic loading device needs power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the right actively loading and hydraulic loading device actively power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the left actively loading and hydraulic loading device actively power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device is unloaded, controller opens the first Solenoid ball valve, the second Solenoid ball valve, closes the 3rd electricity
Magnetic ball valve, the 4th Solenoid ball valve, now, the chamber of hydraulic cylinder two is all connected with fuel tank, and two cavity pressures are equal, do not have loading force；
When hydraulic loading device is to accumulator charging, the first Solenoid ball valve, the 4th Solenoid ball valve are opened, close the second electromagnetic ball
Valve, the 3rd Solenoid ball valve, are moved right by being loaded system, the hydraulic oil in compression hydraulic cylinder right chamber；Or open second
Solenoid ball valve, the 3rd Solenoid ball valve, close the first Solenoid ball valve, the 4th Solenoid ball valve, by being loaded system to left movement, pressure
Hydraulic oil in contracting hydraulic cylinder left chamber；
When the hydraulic loading device is passively loaded, hydraulic cylinder piston rod can passively follow and be loaded system motion and move,
The direction of motion is identical with the direction of motion of the system that is loaded；When the hydraulic loading device is actively loaded, the chamber of hydraulic cylinder two difference
It is connected with accumulator and fuel tank, the chamber of hydraulic cylinder two forms pressure differential, hydraulic cylinder piston rod will the outside power output of active.
The present invention uses above technical scheme compared with prior art, with following technique effect：
Power source and hydraulic oil pump, simple structure, vdiverse in function, with low cost, highly versatile are not needed.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the schematic flow sheet of control method of the present invention.
In figure, 1- fuel tanks, 2- proportional pressure control valves, 3- accumulators, the Solenoid ball valves of 4- first, the Solenoid ball valves of 5- second, 6-
Three Solenoid ball valves, the Solenoid ball valves of 7- the 4th, 8- hydraulic cylinders.
Specific embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, the invention discloses a kind of sound state bidirectional hydraulic loading device based on accumulator, comprising accumulation of energy
Device, fuel tank, hydraulic cylinder, proportional pressure control valve, the first to the 6th pipeline and first to fourth Solenoid ball valve；
The hydraulic cylinder includes cylinder body, piston and piston rod, wherein, the piston is arranged in cylinder body, and cylinder body is divided into a left side
Chamber and right chamber；Described piston rod one end is fixedly connected with the piston, the other end stretches out output end of the left chamber as hydraulic cylinder；
The fuel tank is connected with the left chamber of hydraulic cylinder by the first pipeline, is connected with the right chamber of hydraulic cylinder by second pipe；
The accumulator is connected with the left chamber of hydraulic cylinder by the 3rd pipeline, is connected with the right chamber of hydraulic cylinder by the 4th pipeline；
First to fourth Solenoid ball valve is correspondingly arranged in first to fourth pipeline respectively；
Described proportional pressure control valve one end is connected by the 5th pipeline with fuel tank, the other end is connected by the 6th pipeline with accumulator,
For preventing accumulator internal pressure too high；
The accumulator is used to provide high pressure fuel source, and the fuel tank is used for repairing, and first to fourth Solenoid ball valve is used respectively
In the on off operating mode for controlling its correspondence pipeline.
The present invention also includes Loading Control module, and the Loading Control module includes controller, displacement transducer, Yi Ji
One to the 3rd pressure sensor, the controller respectively with displacement transducer, the first to the 3rd pressure sensor, first to fourth
Solenoid ball valve is electrically connected；
Institute's displacement sensors are arranged at the piston rod of the hydraulic cylinder, for measuring the displacement of piston rod, and are transmitted
To the controller；
The first pressure sensor, second pressure sensor, the 3rd pressure sensor are separately positioned on the left chamber of hydraulic cylinder, liquid
The right chamber of cylinder pressure, the exit of accumulator, for sense where at hydraulic pressure and pass it to the controller；
The controller be used for according to the sensed data of the first to the 3rd pressure sensor, displacement transducer control described first to
4th Solenoid ball valve works.
As shown in Fig. 2 the invention also discloses a kind of control of the sound state bidirectional hydraulic loading device that should be based on accumulator
Method processed, comprising procedure below：
When hydraulic loading device carries out passive loading to the right and hydraulic loading device needs power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device carries out passive loading to the left and hydraulic loading device needs power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the right actively loading and hydraulic loading device actively power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the left actively loading and hydraulic loading device actively power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device is unloaded, controller opens the first Solenoid ball valve, the second Solenoid ball valve, closes the 3rd electricity
Magnetic ball valve, the 4th Solenoid ball valve, now, the chamber of hydraulic cylinder two is all connected with fuel tank, and two cavity pressures are equal, do not have loading force；
When hydraulic loading device is to accumulator charging, the first Solenoid ball valve, the 4th Solenoid ball valve are opened, close the second electromagnetic ball
Valve, the 3rd Solenoid ball valve, are moved right by being loaded system, the hydraulic oil in compression hydraulic cylinder right chamber；Or open second
Solenoid ball valve, the 3rd Solenoid ball valve, close the first Solenoid ball valve, the 4th Solenoid ball valve, by being loaded system to left movement, pressure
Hydraulic oil in contracting hydraulic cylinder left chamber.Both the above mode can compression accumulator hydraulic oil, make energy storage pressure in ratio
Increase in the setting pressure limit of overflow valve.
When the hydraulic loading device is passively loaded, hydraulic cylinder piston rod can passively follow and be loaded system motion and transport
Dynamic, the direction of motion is identical with the direction of motion of the system that is loaded；When the hydraulic loading device is actively loaded, the chamber of hydraulic cylinder two point
It is not connected with accumulator and fuel tank, the chamber of hydraulic cylinder two forms pressure differential, hydraulic cylinder piston rod will the outside power output of active.
Proportional pressure control valve in hydraulic loading device is connected between accumulator port and tank port, limits accumulator
Maximum pressure, it is ensured that the operating pressure of accumulator less than accumulator maximum working pressure, also limit the hydraulic loaded system
The maximum load power of system.Applied when the hydraulic loading device when being loaded system, can adjust proportional pressure control valve different
Opening pressure, makes the highly versatile of the hydraulic loading device.
Hydraulic loading device serves as oil sources using accumulator and fuel tank, it is not necessary to oil pump and motor, is adapted to outwork.
Those skilled in the art of the present technique it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With with art of the present invention in those of ordinary skill general understanding identical meaning.Also
It should be understood that those terms defined in such as general dictionary should be understood that with the context of prior art in
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not limited to this hair
Bright, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. should be included in the present invention
Protection domain within.
Claims (3)
1. the sound state bidirectional hydraulic loading device of accumulator is based on, it is characterised in that comprising accumulator, fuel tank, hydraulic cylinder, ratio
Example overflow valve, the first to the 6th pipeline and first to fourth Solenoid ball valve；
The hydraulic cylinder includes cylinder body, piston and piston rod, wherein, the piston is arranged in cylinder body, and cylinder body is divided into a left side
Chamber and right chamber；Described piston rod one end is fixedly connected with the piston, the other end stretches out output end of the left chamber as hydraulic cylinder；
The fuel tank is connected with the left chamber of hydraulic cylinder by the first pipeline, is connected with the right chamber of hydraulic cylinder by second pipe；
The accumulator is connected with the left chamber of hydraulic cylinder by the 3rd pipeline, is connected with the right chamber of hydraulic cylinder by the 4th pipeline；
First to fourth Solenoid ball valve is correspondingly arranged in first to fourth pipeline respectively；
Described proportional pressure control valve one end is connected by the 5th pipeline with fuel tank, the other end is connected by the 6th pipeline with accumulator,
For preventing accumulator internal pressure too high；
The accumulator is used to provide high pressure fuel source, and the fuel tank is used for repairing, and first to fourth Solenoid ball valve is used respectively
In the on off operating mode for controlling its correspondence pipeline.
2. the sound state bidirectional hydraulic loading device based on accumulator according to claim 1, it is characterised in that the present invention
Loading Control module is also included, the Loading Control module is passed comprising controller, displacement transducer and the first to the 3rd pressure
Sensor, the controller respectively with displacement transducer, the first to the 3rd pressure sensor, the electric phase of first to fourth Solenoid ball valve
Even；
Institute's displacement sensors are arranged at the piston rod of the hydraulic cylinder, for measuring the displacement of piston rod, and are transmitted
To the controller；
The first pressure sensor, second pressure sensor, the 3rd pressure sensor are separately positioned on the left chamber of hydraulic cylinder, liquid
The right chamber of cylinder pressure, the exit of accumulator, for sense where at hydraulic pressure and pass it to the controller；
The controller be used for according to the sensed data of the first to the 3rd pressure sensor, displacement transducer control described first to
4th Solenoid ball valve works.
3. the control method of the sound state bidirectional hydraulic loading device based on accumulator being based on described in claim 1, its feature
It is, comprising procedure below：
When hydraulic loading device carries out passive loading to the right and hydraulic loading device needs power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device carries out passive loading to the left and hydraulic loading device needs power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the right actively loading and hydraulic loading device actively power output to the right, the second electromagnetism is opened
Ball valve and the 3rd Solenoid ball valve, close the first Solenoid ball valve and the 4th Solenoid ball valve, now, hydraulic cylinder left chamber and accumulator port
Connection, right chamber is connected with fuel tank, and left chamber pressure is higher than right chamber pressure, to the right power output；
When hydraulic loading device carries out to the left actively loading and hydraulic loading device actively power output to the left, the first electromagnetism is opened
Ball valve and the 4th Solenoid ball valve, close the second Solenoid ball valve and the 3rd Solenoid ball valve, now, hydraulic cylinder right chamber and accumulator port
Connection, left chamber is connected with fuel tank, and right chamber pressure is higher than left chamber pressure, to the left power output；
When hydraulic loading device is unloaded, controller opens the first Solenoid ball valve, the second Solenoid ball valve, closes the 3rd electricity
Magnetic ball valve, the 4th Solenoid ball valve, now, the chamber of hydraulic cylinder two is all connected with fuel tank, and two cavity pressures are equal, do not have loading force；
When hydraulic loading device is to accumulator charging, the first Solenoid ball valve, the 4th Solenoid ball valve are opened, close the second electromagnetic ball
Valve, the 3rd Solenoid ball valve, are moved right by being loaded system, the hydraulic oil in compression hydraulic cylinder right chamber；Or open second
Solenoid ball valve, the 3rd Solenoid ball valve, close the first Solenoid ball valve, the 4th Solenoid ball valve, by being loaded system to left movement, pressure
Hydraulic oil in contracting hydraulic cylinder left chamber；
When the hydraulic loading device is passively loaded, hydraulic cylinder piston rod can passively follow and be loaded system motion and move,
The direction of motion is identical with the direction of motion of the system that is loaded；When the hydraulic loading device is actively loaded, the chamber of hydraulic cylinder two difference
It is connected with accumulator and fuel tank, the chamber of hydraulic cylinder two forms pressure differential, hydraulic cylinder piston rod will the outside power output of active.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181809.2A CN106930988A (en) | 2017-03-24 | 2017-03-24 | Sound state bidirectional hydraulic loading device and its control method based on accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181809.2A CN106930988A (en) | 2017-03-24 | 2017-03-24 | Sound state bidirectional hydraulic loading device and its control method based on accumulator |
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| Publication Number | Publication Date |
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| CN106930988A true CN106930988A (en) | 2017-07-07 |
Family
ID=59426358
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| CN201710181809.2A Pending CN106930988A (en) | 2017-03-24 | 2017-03-24 | Sound state bidirectional hydraulic loading device and its control method based on accumulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558079A (en) * | 2017-09-19 | 2018-01-09 | 浙江理工大学 | Heat setting machine chain quantitative intelligence oil-supplementing system |
| CN113686567A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Static loading test system |
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| JP2001073413A (en) * | 1999-08-31 | 2001-03-21 | Furukawa Co Ltd | Mechanism operating device for stabilizing travel |
| US7251936B2 (en) * | 2003-02-07 | 2007-08-07 | Hydac System Gmbh | Suspension device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113686567A (en) * | 2021-10-26 | 2021-11-23 | 三一重型装备有限公司 | Static loading test system |
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Application publication date: 20170707 |