CN109707685A - A kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system - Google Patents
A kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system Download PDFInfo
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- CN109707685A CN109707685A CN201910054416.4A CN201910054416A CN109707685A CN 109707685 A CN109707685 A CN 109707685A CN 201910054416 A CN201910054416 A CN 201910054416A CN 109707685 A CN109707685 A CN 109707685A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 30
- 230000003028 elevating effect Effects 0.000 claims abstract description 64
- 230000007423 decrease Effects 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 46
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The invention discloses a kind of Multi-cylinders to lift/decline synchronous digital hydraulic control system, including computer control unit, elevating ram, displacement sensor, hydraulic control one-way valve, electro-hydraulic directional control valve, two-position four-way solenoid valve, displacement sensor is on elevating ram, electro-hydraulic directional control valve is connect with hydraulic control one-way valve, and hydraulic control one-way valve is connected with the bottom end of elevating ram；Electro-hydraulic directional control valve is connected with the top of elevating ram；Two-position four-way solenoid valve is connected with hydraulic control one-way valve；Displacement sensor, electro-hydraulic directional control valve and two-position four-way solenoid valve are electrically connected with computer control unit.The configuration of the present invention is simple, high-precision lifting/decline synchronously control in the case of different loads may be implemented on Multi-cylinder in parallel, also the autonomous working of each oil cylinder may be implemented, present invention reduces system hardware costs, also the manual debugging time is greatly reduced, debugging cost is reduced, host maintenance is also facilitated.
Description
Technical field
The invention belongs to hydraulic control system technical field, more particularly to a kind of Multi-cylinder lifting/decline is same
Walk digital hydraulic control system.
Background technique
With the development of machinery manufacturing industry, the application field of hydraulic synchronization Drive Control Technique is more and more wider, either golden
Belong to processing equipment, engineering machinery or aerospace appts etc., the requirement to hydraulic synchronization drive control precision is higher and higher.
Hydraulic synchronization drive control is not only simple in structure, forms conveniently, it is easier to realize the high-power control and automation of hydraulic device
Control is frequently utilized for the big workbench of some large and medium-sized precision stamping hydraulic presses and various large scale equipment platforms in the industry
Synchronous driving and workbench balance control.How to realize hydraulic press control precision height, fast response time, reliable operation controlling
The key point in design of Hydraulic System can be become.
Therefore, how providing a kind of Multi-cylinder and lifting/decline synchronous digital hydraulic control system becomes art technology
The problem of personnel's urgent need to resolve.
Summary of the invention
In view of this, the present invention provides a kind of Multi-cylinders to lift/decline synchronous digital hydraulic control system, structure letter
It is single, the high-precision synchronously control of Multi-cylinder in parallel may be implemented, lifting, the speed of decline and position synchronization accuracy are high, greatly
It reduces the manual debugging time greatly, reduces debugging cost and lower compared to traditional hydraulic technologies cost.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system, comprising: computer control unit, elevating ram,
Displacement sensor, hydraulic control one-way valve, electro-hydraulic directional control valve, two-position four-way solenoid valve, wherein institute's displacement sensors are mounted on
On the elevating ram, the electro-hydraulic directional control valve is connect by pipeline one with the forward direction of the hydraulic control one-way valve, the liquid
Control check valve is connected back through the pipeline one with the bottom end of the elevating ram；The electro-hydraulic directional control valve passes through
Pipeline two is connected with the top of the elevating ram；The two-position four-way solenoid valve passes through pipeline three and the hydraulic control one-way valve
It is connected；Institute's displacement sensors, the electro-hydraulic directional control valve and the two-position four-way solenoid valve with the computer control
Unit processed is electrically connected.
Further, the elevating ram, institute's displacement sensors, the hydraulic control one-way valve and the electro-hydraulic directional control valve
Be equipped with it is multiple, and correspond control.Multiple elevating ram Parallel Designs can be realized more by hydraulic control system of the present invention
A high-precision synchronously control of elevating ram.
Further, the first oil inlet pipe and the first oil return line are connected on the electro-hydraulic directional control valve.Hydraulic oil by
First oil inlet pipe enters elevating ram, provides hydraulic power for elevating ram, and form circulation loop with the first oil return line,
Realize oil cylinder lifting.
Further, the second oil inlet pipe and the second oil return line are connected on the two-position four-way solenoid valve.Hydraulic oil by
Second oil inlet pipe enters two-position four-way solenoid valve, enters back into hydraulic control one-way valve, provides opening power for hydraulic control one-way valve, realizes
Oil cylinder decline.
It further, further include overflow valve, the overflow valve is connected to the two-position four-way solenoid valve and the second oil return line
Between.Into the hydraulic oil in two-position four-way solenoid valve also after overflow valve, into the second oil return line, with the second oil inlet pipe
Circulation loop is formed, realizes that control hydraulic control one-way valve keeps pressure, opens hydraulic control check valve always.
Further, further include integrated valve block, the hydraulic control one-way valve, the two-position four-way solenoid valve, the overflow valve and
The electro-hydraulic directional control valve is assemblied on the integrated valve block.The setting of integrated valve block not only improves hydraulic control one-way valve, two
The installation of position four-way solenoid valve, overflow valve and electro-hydraulic directional control valve, but realize hydraulic control one-way valve, two-position four-way solenoid valve,
The centralized arrangement of overflow valve and electro-hydraulic directional control valve reduces occupancy volume.
Further, the elevating ram is connected on the hydraulic fluid port of the integrated valve block by connecting tube, to realize act
Installation, the fixation of oil-lifting jar, more flexibly.
It further, further include control button, the control button, which divides synchronously control button and corresponds oil cylinder control, to be pressed
Button, the synchronously control button and the computer control unit are electrically connected, and press control button, it can be achieved that Multi-cylinder is lifted
The synchronous automatic control of liter/decline.
Further, the synchronously control button includes lifting button, stop button and declines button.Lifting button is pressed,
The synchronous of elevating ram can be achieved to rise；Declines button is pressed, it can be achieved that the synchronous of elevating ram declines；Stop button is pressed,
Then elevating ram is synchronous stops movement.
Further, the one-to-one correspondence oil cylinder control button respectively individually lifts the realization of each elevating ram, stops
Only and decline, presses lifting button one, only corresponding oil cylinder lifting, presses declines button one, only corresponding oil cylinder decline,
Stop button one is pressed, only corresponding oil cylinder stops.
The beneficial effects of the present invention are:
The present invention passes through computer control unit, displacement sensor, hydraulic control one-way valve, electro-hydraulic directional control valve and two
Four way solenoid valve, it can be achieved that elevating ram synchronously control, lifting, the speed of decline and position synchronization accuracy are high, contract significantly
Subtract the manual debugging time, reduced debugging cost, reduces conventional hydraulic control cost and more convenient maintenance.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is control principle drawing of the invention.
Fig. 2 attached drawing is structural schematic diagram of the invention.
Wherein, in figure,
1- displacement sensor；2- elevating ram；3- hydraulic control one-way valve；4- integrated valve block；5- two-position four-way solenoid valve；6- overflows
Flow valve；7- electro-hydraulic directional control valve；8- computer control unit；9- control button；10- pipeline one；11- pipeline two；12- pipeline
Three；The first oil inlet pipe of 13-；The first oil return line of 14-；The second oil inlet pipe of 15-；The second oil return line of 16-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Attached drawing 1-2 is please referred to, the present invention provides a kind of Multi-cylinders to lift/decline synchronous digital hydraulic control system, packet
It includes: computer control unit 8, elevating ram 2, displacement sensor 1, hydraulic control one-way valve 3, electro-hydraulic directional control valve 7, two-position four-way
Solenoid valve 5, wherein displacement sensor 1 is mounted on elevating ram 2, and electro-hydraulic directional control valve 7 passes through pipeline 1 and hydraulic control list
Forward direction connection to valve 3, hydraulic control one-way valve 3 are connected back through pipeline 1 with the bottom end of elevating ram 2, fluid-control one-way
Valve 3 can be such that loaded each elevating ram 2 is fixed in position；Electro-hydraulic directional control valve 7 passes through pipeline 2 11 and lifting oil
The top of cylinder 2 is connected；Two-position four-way solenoid valve 5 is connected by pipeline 3 12 with hydraulic control one-way valve 3；Displacement sensor 1, electricity
Hydrodynamic pressure reversal valve 7 and two-position four-way solenoid valve 5 are electrically connected with computer control unit 8.
Elevating ram 2, displacement sensor 1, hydraulic control one-way valve 3 and electro-hydraulic directional control valve 7 are equipped with multiple, and one is a pair of
It should control.Multiple 2 Parallel Designs of elevating ram, the load that branch fits over each elevating ram 2 can be different, by the hydraulic control of the present invention
System processed can be realized the high-precision synchronously control of multiple elevating rams 2.
In order to further optimize the above technical scheme, elevating ram 2, displacement sensor 1, hydraulic control one-way valve 3 and electronic liquid
There are four pressure reversal valve 7 is all provided with.
The first oil inlet pipe 13 and the first oil return line 14 are connected on electro-hydraulic directional control valve 7.Hydraulic oil by first into
Oil pipe line 13 enters elevating ram 2, provides hydraulic power for elevating ram 2, and form circulation loop with the first oil return line 14.
The second oil inlet pipe 15 and the second oil return line 16 are connected on two-position four-way solenoid valve 5.Hydraulic oil by second into
Oil pipe line 15 enters two-position four-way solenoid valve 5, enters back into hydraulic control one-way valve 3, provides opening power for hydraulic control one-way valve 3.
One end of first oil inlet pipe 13 and the second oil inlet pipe 15 is connected with hydraulic pump.
The invention also includes overflow valve 6, overflow valve 6 is connected between two-position four-way solenoid valve 5 and the second oil return line 16.
Into the hydraulic oil in two-position four-way solenoid valve 5 also after overflow valve 6, into the second oil return line 16, with the second oil inlet pipe
15 form circulation loop, provide for hydraulic control check valve 3 and stay open pressure.
The invention also includes integrated valve block 4, hydraulic control one-way valve 3, two-position four-way solenoid valve 5, overflow valve 6 and electric hydaulic are changed
It is assemblied on integrated valve block 4 to valve 7.The setting of integrated valve block 4, not only improve hydraulic control one-way valve 3, two-position four-way solenoid valve 5,
The installation of overflow valve 6 and electro-hydraulic directional control valve 7, and realize hydraulic control one-way valve 3, two-position four-way solenoid valve 5,6 and of overflow valve
The centralized arrangement of electro-hydraulic directional control valve 7 reduces occupancy volume.
In order to further optimize the above technical scheme, elevating ram 2 is connected to the hydraulic fluid port of integrated valve block 4 by connecting tube
On, to realize the installation of elevating ram 2, fixed and flexible.
The invention also includes control button 9, control button 9 divides synchronously control button and corresponds oil cylinder control button,
Synchronously control button and computer control unit 8 are electrically connected, and press synchronously control button, it can be achieved that Multi-cylinder lifting/decline
Synchronous automatic control.
In order to further optimize the above technical scheme, synchronously control button includes that lifting button, stop button and decline are pressed
Button.Lifting button is pressed, it can be achieved that the synchronous of elevating ram 2 rises；Press declines button, it can be achieved that elevating ram 2 synchronization
Decline；Stop button is pressed, then elevating ram 2 is synchronous stops movement.
In order to further optimize the above technical scheme, oil cylinder control button is corresponded respectively to each elevating ram 2
It realizes individually lifting, stop and decline, press lifting button one, only corresponding oil cylinder lifting, presses declines button one, only
Corresponding oil cylinder decline, presses stop button one, only corresponding oil cylinder stops.
The present invention by computer control unit 8, displacement sensor 1, hydraulic control one-way valve 3, electro-hydraulic directional control valve 7 and
Two-position four-way solenoid valve 5, it can be achieved that elevating ram 2 synchronously control, lifting, the speed of decline and position synchronization accuracy are high,
The manual debugging time is greatly reduced, reduces debugging cost, reduces conventional hydraulic control cost and more convenient maintenance
Maintenance.In addition, the present invention also has fault alarm, failure storage shows fault code.The present invention can also be achieved long-range control,
Computer control unit 8 is connect with mobile Internet, realizes mobile Internet control and operation, mobile Internet fault diagnosis etc.
Function.
The working principle of the invention:
When pressing lifting button, electric signal is sent to computer control unit 8, and computer control unit 8 issues a command to
Each electro-hydraulic directional control valve 7, electro-hydraulic directional control valve 7 make each electronic liquid according to 8 control instruction of computer control unit
Press reversal valve 7 is synchronous to open a fixed valve opening.Pressure oil enters 2 bottom cavity of elevating ram by pipeline 1, by pipeline two
11 outflows, elevating ram 2 start lifting movement, and elevating ram 2 is same in lifting process, and displacement sensor 1 detects elevating ram 2
Speed and position, the parameter feedback that will test to computer control unit 8 carry out PID calculating, be averaging speed and average
Location point, when a certain elevating ram 2 is less than or greater than average speed, computer control unit 8 is just to this elevating ram 2
Electro-hydraulic directional control valve 7 carries out valve port adjusting, so that the 2 actual motion speed of elevating ram is equal to average speed, reaches Multi-cylinder
With the lifting of same speed, i.e. speed sync (present case is that the lifting of four oil cylinders synchronizes).When the location point of a certain elevating ram 2 is greater than
Or when being less than mean place point, computer control unit 8 just carries out valve port to the electro-hydraulic directional control valve 7 of this elevating ram 2
It adjusts, instantaneously changes each 2 speed of elevating ram, make the elevating ram 2 within next 3 testing times, reach Multi-cylinder
Location point is synchronous, i.e., position is synchronous.
When pressing declines button, two-position four-way solenoid valve 5 is powered, so that entering pressure oil by the second oil inlet pipe opens liquid
Check valve 3 is controlled, and electric signal is sent to computer control unit 8, computer control unit 8 issues a command to each electronic liquid
Reversal valve 7 is pressed, so that electro-hydraulic directional control valve 7 is made the commutation of disengaging oil, and electro-hydraulic directional control valve 7 is according to computer control unit
8 control instructions make each electro-hydraulic directional control valve 7 is synchronous to open a fixed valve opening.Pressure oil is entered by pipeline 2 11 to be lifted
2 top of oil-lifting jar is flowed out by pipeline 1, and elevating ram 2 begins to decline movement, and elevating ram 2 is synchronous in decline process, displacement
Sensor 1 detects speed and the position of elevating ram 2, and the parameter feedback that will test to computer control unit 8 carries out PID
It calculates, is averaging speed and average location point, when a certain elevating ram 2 is less than or greater than average speed, computer control is single
Member 8 just carries out valve port adjusting to the electro-hydraulic directional control valve 7 of this elevating ram 2, makes the 2 actual motion speed of elevating ram etc.
In average speed, reach Multi-cylinder and lifted with same speed, is i.e. speed sync (present case is that the lifting of four oil cylinders synchronizes).When a certain
When the location point of elevating ram 2 is more than or less than mean place point, computer control unit 8 is just to the electricity of this elevating ram 2
Hydrodynamic pressure reversal valve 7 carries out valve port adjusting, instantaneously changes each 2 speed of elevating ram, makes the elevating ram 2 at next 3
In testing time, reaches Multi-cylinder location point and synchronize, i.e., position is synchronous.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system characterized by comprising computer control unit
(8), elevating ram (2), displacement sensor (1), hydraulic control one-way valve (3), electro-hydraulic directional control valve (7), two-position four-way solenoid valve
(5), wherein institute's displacement sensors (1) are mounted on the elevating ram (2), and the electro-hydraulic directional control valve (7) passes through pipe
The forward direction of road one (10) and the hydraulic control one-way valve (3) is connect, the hydraulic control one-way valve (3) back through the pipeline one
(10) it is connected with the bottom end of the elevating ram (2)；The electro-hydraulic directional control valve (7) passes through pipeline two (11) and the act
The top of oil-lifting jar (2) is connected；The two-position four-way solenoid valve (5) passes through pipeline three (12) and the hydraulic control one-way valve (3)
It is connected；Institute's displacement sensors (1), the electro-hydraulic directional control valve (7) and the two-position four-way solenoid valve (5) with it is described
Computer control unit (8) is electrically connected.
2. a kind of Multi-cylinder according to claim 1 lifts/declines synchronous digital hydraulic control system, which is characterized in that
The elevating ram (2), institute's displacement sensors (1), the hydraulic control one-way valve (3) and the electro-hydraulic directional control valve (7) are equal
Equipped with multiple, and it is arranged in a one-to-one correspondence.
3. a kind of Multi-cylinder according to claim 2 lifts/declines synchronous digital hydraulic control system, which is characterized in that
The first oil inlet pipe (13) and the first oil return line (14) are connected on the electro-hydraulic directional control valve (7).
4. a kind of Multi-cylinder according to claim 2 or 3 lifts/decline synchronous digital hydraulic control system, feature exists
In being connected with the second oil inlet pipe (15) and the second oil return line (16) on the two-position four-way solenoid valve (5).
5. a kind of Multi-cylinder according to claim 4 lifts/declines synchronous digital hydraulic control system, which is characterized in that
Further include overflow valve (6), the overflow valve (6) be connected to the two-position four-way solenoid valve (5) and the second oil return line (16) it
Between.
6. a kind of Multi-cylinder according to claim 5 lifts/declines synchronous digital hydraulic control system, which is characterized in that
It further include integrated valve block (4), the hydraulic control one-way valve (3), the two-position four-way solenoid valve (5), the overflow valve (6) and described
Electro-hydraulic directional control valve (7) is assemblied on the integrated valve block (4).
7. a kind of Multi-cylinder according to claim 6 lifts/declines synchronous digital hydraulic control system, which is characterized in that
The elevating ram (2) is connected on the integrated valve block (4) by connecting tube.
8. a kind of Multi-cylinder according to claim 1 lifts/declines synchronous digital hydraulic control system, which is characterized in that
It further include control button (9), the control button (9) divides synchronously control button and corresponds oil cylinder control button, described same
It walks control button and the computer control unit (8) is electrically connected.
9. a kind of Multi-cylinder according to claim 8 lifts/declines synchronous digital hydraulic control system, which is characterized in that
The synchronously control button includes lifting button, stop button and declines button.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910054416.4A CN109707685A (en) | 2019-01-21 | 2019-01-21 | A kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system |
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| CN201910054416.4A CN109707685A (en) | 2019-01-21 | 2019-01-21 | A kind of Multi-cylinder lifts/declines synchronous digital hydraulic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503073A (en) * | 2020-04-03 | 2020-08-07 | 山西大学 | Semi-closed hydraulic servo control system for mobile coal bunker equipment |
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