CN105443466B - Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon - Google Patents
Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon Download PDFInfo
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- CN105443466B CN105443466B CN201510952334.3A CN201510952334A CN105443466B CN 105443466 B CN105443466 B CN 105443466B CN 201510952334 A CN201510952334 A CN 201510952334A CN 105443466 B CN105443466 B CN 105443466B
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- 239000000446 fuel Substances 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims description 123
- 239000010720 hydraulic oil Substances 0.000 claims description 46
- 238000004891 communication Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035568 catharsis Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention proposes a kind of pipe straightener hydraulic control system for being used to open cylinder and upper roller compensating cylinder soon, including opening cylinder hydraulic control circuit and upper roller compensating cylinder hydraulic control circuit soon, opening cylinder hydraulic control circuit soon includes high-low pressure oil sources selection device, meter in device, high-pressure compensating device and meter out device, upper roller compensating cylinder hydraulic control circuit, including the first solenoid directional control valve, accumulator assembly and three relief valves optionally connected with the rod chamber and high pressure fuel source being connected with the rod chamber of upper roller compensating cylinder.The present invention is used for the pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon, can effectively eliminate the hydraulic shock for opening cylinder soon, and cylinder service life is opened in extension soon, and energy-saving, cost-effective, is effectively protected the sealing for opening cylinder soon.
Description
Technical field
Cylinder and upper roller compensating cylinder liquid are opened soon the present invention relates to a kind of hydraulic control system, more particularly to a kind of pipe straightener
Pressure control system.
Background technology
Pipe straightener is the visual plant in steel pipe's production.The control for opening cylinder and upper roller compensating cylinder soon is straightener hydraulic pressure
The key of control system.When aligning steel pipe, upper straightening roll is needed quickly to depress and rapid uplift, in order to avoid steel tube end part and upper aligning
Roller bumps against.The quick pressure of upper straightening roll and the action of rapid uplift are completed by opening cylinder and upper roller compensating cylinder soon.Due to opening cylinder soon
Cylinder diameter is total travel work than larger, and movement velocity quickly, causes the change of moment hydraulic system energy very greatly, generation is very big
Hydraulic shock and vibration, while open cylinder piston soon impacts very big to cylinder cap, be easy to cause damage and the cylinder cap of sealing
Hit and split.Vibrate for a long time simultaneously, hydraulic shock makes fluid pressure line, the junction of hydraulic valve platform is easy to produce oil leak, or even spray
Oil, has a strong impact on continuous, safety in production.
Illustrate that pipe straightener opens the concrete technology action process of cylinder and upper roller compensating cylinder soon with reference to Fig. 1.
As shown in figure 1, motor 1 drives reductor 2, with opening cylinder 3 soon, upper roller compensating cylinder 4 and pressure leading screw 5 are rigidly connected,
Constitute upper roller system adjusting apparatus.Smoothing roll 6 is rigidly connected with upper roller system adjusting apparatus by high-strength bolt.Upper roller compensating cylinder 4
It is placed in and opens the both sides of cylinder 3 soon.Cylinder 3 is opened soon, and upper roller compensating cylinder 4 there are three kinds of working conditions：High pressure is locked；Start discharging soon pressure；Low pressure
Balance.It is described below：
1) high pressure is locked：In straightener straightening process, open soon the epicoele 3a of cylinder 3 keep high pressure, locking open soon cylinder 3 and provide to
Under straightening force.Because load change and interior let out can cause pressure change, separately there is one group of pressure compensation loop to enter Mobile state compensation.
Stabilization to ensure straightening force.
2) pressure release is opened soon：Straightener aligning is finished, and the epicoele 3a quick pressure releasings of cylinder 3 are opened soon, under the effect of upper roller compensating cylinder 4,
The upward rapid uplift of smoothing roll, prevents from damaging the head of steel pipe.
3) low-pressure balance：During straightener pass adjustment, upper roller compensating cylinder 4 is in low-pressure balance state, and the driving of motor 1 is slowed down
The control pressure leading screw 5 of machine 2 rises, and declines.Upper roller compensating cylinder 4 is servo-actuated adjustment in pressure leading screw 5 both sides, while eliminating leading screw spiral shell
Female gap.Ensure the precision of pass adjustment.
Existing aligning machine hydraulic system power source uses several high pressure variable parallel connection of pumps fuel feeding, while with accumulator valve station
As auxiliary power source, absorb and eliminate hydraulic shock and vibration.But eliminate the DeGrain of hydraulic shock.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art there is provided a kind of can significantly reduce to open the liquid of cylinder soon
The pipe straightener hydraulic control system for being used to open cylinder and upper roller compensating cylinder soon of pressure impact.
According to an aspect of the present invention, a kind of pipe straightener hydraulic control system for being used to open cylinder and upper roller compensating cylinder soon
System, including：
Open soon cylinder hydraulic control circuit, including high-low pressure oil sources selection device, meter in device, high-pressure compensating device with
And meter out device, the high-low pressure oil sources selection device can selectively communicate with high pressure fuel source or low pressure oil sources, with
Hydraulic oil or low pressure oil are supplied to the epicoele for opening cylinder soon, and the meter in device can be opened or closed described opens cylinder soon
Connection between epicoele fuel feeding and the high-low pressure oil sources selection device, the meter out device can connect the epicoele for opening cylinder soon
Return line is passed to so as to open the epicoele pressure release of cylinder soon, the high-pressure compensating device will optionally can open soon the epicoele of cylinder with
One high pressure repairing oil communication into the epicoele for opening cylinder soon to supplement hydraulic oil；
Upper roller compensating cylinder hydraulic control circuit, including be connected with the rod chamber of upper roller compensating cylinder the first solenoid directional control valve,
Accumulator assembly and three relief valves optionally connected with the rod chamber and high pressure fuel source, first electromagnetic switch
Valve can connect the rod chamber with high pressure fuel source or return line, and three relief valve can be by the liquid in rod chamber
Force feed is arranged to the pressure release oil circuit..
According to an embodiment of the present invention, the high-low pressure oil sources selection device includes：
First two-way plug-in valve and the first two-way plug-in valve cover plate being matched therewith, the A of first two-way plug-in valve
Mouthful and the B mouthfuls of control ports for being respectively connecting to low pressure oil sources and the first two-way plug-in valve cover plate；
Second two-way plug-in valve cover plate and the second two-way plug-in valve being matched therewith, the B of second two-way plug-in valve
Mouth is connected with the B mouths of the first two-way plug-in valve, and the A mouths of second two-way plug-in valve are connected with high pressure fuel source；
Second solenoid directional control valve, second solenoid directional control valve can be optionally by the second two-way plug-in valve cover plate
Control port connected with drain line or high pressure fuel source.
According to an embodiment of the present invention, the meter in device includes the 3rd solenoid directional control valve, shuttle valve, the three or two
Logical inserted valve and the 3rd two-way plug-in valve cover plate coordinated with the 3rd two-way plug-in valve；The A mouths of 3rd two-way plug-in valve
The B mouths of second two-way plug-in valve are connected, the epicoele of cylinder is opened in the B mouths connection of the 3rd two-way plug-in valve soon；The shuttle valve
Two oil inlets connect the A mouths of the epicoele for opening cylinder soon and the 3rd two-way plug-in valve respectively；The 3rd solenoid directional control valve energy
The enough control port by the 3rd inserting valve cover is connected with the oil-out or drain line of the shuttle valve.
According to an embodiment of the present invention, the meter out device includes the 4th two-way plug-in valve and the described 4th
The 4th two-way plug-in valve cover plate and the 4th solenoid directional control valve that two-way plug-in valve coordinates, the A mouths of the 4th two-way plug-in valve
It is connected with return line, the B mouths of the 4th two-way plug-in valve are connected with the epicoele for opening cylinder soon, the 4th electromagnetism
Reversal valve can be optionally by the control port of the A mouths and the 4th two-way plug-in valve cover plate of the 4th two-way plug-in valve
Connection.
According to an embodiment of the present invention, the high-pressure compensating device include the electron pressure that is connected with the epicoele after
Electrical equipment and the first check valve and the 5th solenoid directional control valve being sequentially connected in series between the epicoele and the high pressure repairing oil circuit；
The hydraulic oil that first check valve is prevented from the epicoele flows to the high pressure repairing oil circuit, the 5th electromagnetic switch
Valve can be according to the signal of the electronic pressure relay optionally by first check valve and high pressure repairing oil
Road is connected.
According to an embodiment of the present invention, first solenoid directional control valve is the 3-position 4-way of O-shaped function double electromagnet
Reversal valve, prevent hydraulic oil from flowing to high-pressure oil passage second is connected between the P mouths and high-pressure oil passage of first solenoid directional control valve
Check valve.
According to an embodiment of the present invention, the accumulator assembly includes accumulator control valve group and is connected to described
Shock-proof pressure gauge and accumulator in accumulator control valve group.
According to an embodiment of the present invention, the top petrol tank of the connection cavity of resorption for opening cylinder soon is also included.
According to an embodiment of the present invention, the A mouths of first two-way plug-in valve are connected by low pressure and mass flow oil inlet
Low pressure oil sources is connected to, the A mouths of second two-way plug-in valve are connected to high pressure fuel source by high-pressure low-flow oil inlet.
As shown from the above technical solution, advantages and positive effects of the present invention are：
The present invention is used for the pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon, can effectively eliminate fast
The hydraulic shock of cylinder is opened, cylinder service life is opened in extension soon, and energy-saving, cost-effective, is effectively protected and is opened the close of cylinder soon
Envelope.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature of the invention and advantage will become
It is more obvious.
Fig. 1 is the schematic diagram that existing pipe straightener opens cylinder and upper roller compensating cylinder soon；
Fig. 2 is the signal that the embodiment of the present invention is used to open the pipe straightener hydraulic control system of cylinder and upper roller compensating cylinder soon
Figure.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
As shown in Fig. 2 present embodiment discloses a kind of pipe straightener hydraulic pressure control for being used to open cylinder and upper roller compensating cylinder soon
System processed.This is used for the pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon including opening cylinder hydraulic control circuit soon
And upper roller compensating cylinder hydraulic control circuit.
Open soon cylinder hydraulic control system including high-low pressure oil sources selection device, meter in device, high-pressure compensating device with
And meter out device.Cylinder hydraulic control system will can be soon opened when in use to be mainly integrated on a hydraulic block, and in liquid
Corresponding high pressure oil inlet P 1, low pressure oil inlet P 2, oil return inlet T 0, high pressure repairing mouthful P3 and drain tap L3 are set on briquetting.Its
In, high pressure oil inlet P 1 and high pressure repairing mouthful P3 are connected with high pressure fuel source, and low pressure oil inlet P 2 is connected with low pressure oil sources, returns
Hydraulic fluid port T0 and drain tap L3 are connected with return line.High pressure oil inlet P 1 is high-pressure low-flow oil inlet, low pressure oil inlet P 2
For low pressure and mass flow oil inlet, thus, the flow of low pressure oil sources is more than the flow of the high pressure fuel source.Opening soon in the present embodiment
Cylinder hydraulic control system can act on the epicoele 3a for opening cylinder 3 soon.
High-low pressure oil sources selection device can selectively communicate with high pressure fuel source or low pressure oil sources, that is to say, that the height
Low pressure oil sources selection device can select connection high pressure oil inlet P 1 or low pressure oil inlet P 2, so that by hydraulic oil or low pressure
Oil is fed in the epicoele 3a for opening cylinder 3 soon.In the present embodiment, high-low pressure oil sources selection device include the first two-way plug-in valve 7,
First two-way plug-in valve cover plate 8, the second two-way plug-in valve 9, the second two-way plug-in valve cover plate 10 and the second solenoid directional control valve 11.
First two-way plug-in valve cover plate 8 is used to be engaged with the first two-way plug-in valve 7, the first two-way plug-in valve cover plate 8
It is upper to form the control port connected with the spring cavity of the first two-way plug-in valve 7.The A mouths of first two-way plug-in valve 7 are connected to low pressure
Oil inlet P 2, the B mouths of the first two-way plug-in valve 7 are connected to the control port of the first two-way plug-in valve cover plate 8.
Second two-way plug-in valve cover plate 10 is used to be engaged with the second two-way plug-in valve 9, the second two-way plug-in valve cover plate
The control port connected with the spring cavity of the second two-way plug-in valve 9 is formed with 10.The A mouths of second two-way plug-in valve 9 are connected to
High pressure oil inlet P 1, the B mouths of second two-way plug-in valve 9 are connected to the B mouths of first two-way plug-in valve 7.Second two-way is inserted
The control port of valve cover 10 is connected to the second solenoid directional control valve 11 so that second solenoid directional control valve 11 can optionally by
The control port of the second two-way plug-in valve cover plate 10 is connected with drain line or high pressure fuel source.Second solenoid directional control valve 11
P mouths connection high pressure oil inlet P 1, the controls that T mouthful L3, A mouthful of connection drain taps are connected on the second two-way plug-in valve cover plates 10 are oily
Mouthful, B mouthfuls of closings.
The electromagnet Y1 of second solenoid directional control valve 11 not it is electric when, now the hydraulic oil in high pressure oil inlet P 1 can lead to
Cross second solenoid directional control valve 11 P mouths and A mouthfuls after enter the control port of the second two-way plug-in valve cover plate 10, Jin Erjin
Enter into the spring cavity of the second two-way plug-in valve 9, now realize control port and the hydraulic oil of the second two-way plug-in valve cover plate
Source is connected.When electromagnet Y1 obtains electric, the A mouths of second solenoid directional control valve 11 connect T mouthfuls, and P mouthfuls connect B mouthfuls.Due to B mouthfuls for envelope
Close, so when can only realize that the control port of the second two-way plug-in valve cover plate 10 is connected with drain tap L3, that is, realize
The control port of second two-way plug-in valve cover plate 10 is connected with drain line, so, the spring cavity of the second two-way plug-in valve 9
In hydraulic oil can flow to fuel tank by drain tap L3.
When the electromagnet Y1 of the second solenoid directional control valve 11 obtains electric, because the hydraulic oil in high pressure oil inlet P 1 can pass through
Control port on second two-way plug-in valve cover plate 10 and enter in the spring cavity of the second two-way plug-in valve 9, so
The A mouths of two two-way plug-in valves 9 and its spring cavity cause second two-way plug-in valve 9 meeting at it all by the pressure of hydraulic oil
The oil circuit that spring force effect in spring cavity is lower and closes between the A mouths of second two-way plug-in valve 9 and B mouthfuls.Now, low pressure
Hydraulic oil in oil inlet P 2 can open the connection between the A mouths of the first two-way plug-in valve 8 and B mouthfuls under pressure, low
Force feed arrives first at the A mouths of the first two-way plug-in valve 8 from low pressure oil inlet P 2, then by the B of first two-way plug-in valve 8
Mouthful, the B mouths of the second two-way plug-in valve 9 are further reached, are flowed away from the B mouths of the second two-way plug-in valve 9.
And after the electromagnet Y1 of the second solenoid directional control valve 11 obtains electric, the hydraulic oil in high pressure oil inlet P 1 can be from
The A mouths of two two-way plug-in valves 9 enter the B mouths of second two-way plug-in valve 9.Now, hydraulic oil can be again from the first inserted valve
The control port of cover plate 8 is entered in the spring cavity of the first two-way plug-in valve 7, so that first two-way plug-in valve 7 is closed, this
When, only hydraulic oil can flow out from the B mouths of the second two-way plug-in valve 9, and low pressure oil is then because the first two-way plug-in valve 7 is closed
Close and can not flow out.Therefore, by the switch of the second solenoid directional control valve 11, high pressure fuel source or low pressure can be selectively communicated with
Oil sources.But high-low pressure oil sources selection device also other devices of the present invention, are such as respectively adopted two valves and beat on or off respectively
Close high pressure oil inlet P 1 and low pressure oil inlet P 2.And the high-low pressure oil sources selection device of the present embodiment can be rapidly and sensitively to height
Force feed and low pressure oil are switched over, simple and compact for structure.
Meter in device can be opened or closed between the epicoele 3a for opening cylinder 3 soon and high-low pressure oil sources selection device
Connection, so that hydraulic oil or low pressure oil can be entered in epicoele 3a.Wherein, when opening cylinder 3 soon from top rapid decrease
When, low pressure oil enters epicoele 3a and drives the piston for opening cylinder 3 soon to decline so that open the hydraulic punch that the positions such as the cylinder cap of cylinder 3 are subject to soon
Hit smaller, and when the oil cylinder for opening cylinder 3 soon declines in place, hydraulic oil enters epicoele 3a, to increase the pressure in epicoele 3a, from
And enough pressure can be provided for roll, it is ensured that the normal work of roll.
In the present embodiment, meter in device includes the 3rd two-way plug-in valve 19, coordinated with the 3rd two-way plug-in valve 19
The 3rd two-way plug-in valve cover plate 18, the 3rd solenoid directional control valve 17 and shuttle valve 30.The A mouths of 3rd two-way plug-in valve 19 pass through
Oil circuit 19a is connected to the B mouths of the second two-way plug-in valve 9, and the B mouths of the 3rd two-way plug-in valve are communicated to by oil circuit 19b to be opened soon
The epicoele 3a of cylinder 3.Two oil inlets of shuttle valve 30 open the epicoele 3a of cylinder 3 and the A mouths of the 3rd two-way plug-in valve 19 soon respectively.I.e.
Two oil inlets of the shuttle valve 30 connect oil circuit 19a and oil circuit 19b respectively.3rd solenoid directional control valve 17 can be by the 3rd inserted valve
The control port of cover plate 18 is connected with the oil-out or drain line of shuttle valve 30, wherein, the P mouths of the 3rd solenoid directional control valve 17
The oil-out of shuttle valve 30 is connected, the T mouths connection drain tap L3 of the 3rd solenoid directional control valve 17, the A mouths of the 3rd solenoid directional control valve 17 connect
Connect the control port of the 3rd inserting valve cover 18.The T mouths closing of 3rd solenoid directional control valve 17.3rd solenoid directional control valve 17 has
When electromagnet Y3, electromagnet Y3 are powered off, the P mouths of the 3rd solenoid directional control valve 17 are connected with A mouthfuls, in oil circuit 19a or oil circuit 19b
Hydraulic oil after shuttle valve 30 again by the 3rd solenoid directional control valve 17 and reach the 3rd two-way plug-in valve 19 spring cavity, will
3rd two-way plug-in valve 19 is closed, and when electromagnet Y3 is powered, the P mouths of the 3rd solenoid directional control valve 17 are connected with B mouthfuls, A mouthfuls and T mouthfuls
Connection, now the hydraulic oil in the spring cavity in the 3rd two-way plug-in valve 19 flows to T mouthfuls from the A mouths of the 3rd solenoid directional control valve 17,
Then fuel tank is flowed back to from drain tap L3 again.It may insure to work as the wherein unexpected all the way of oil circuit 19a or oil circuit 19b using shuttle valve 30
During oil-break, the P mouths of the 3rd solenoid directional control valve 17 have hydraulic oil supply all the time, so as to improve security.
The present invention meter in device also can use other structures, for example just with a solenoid directional control valve or its
His controlled valve etc..
The epicoele 3a for opening cylinder 3 soon can be communicated to return line so as to open cylinder soon by the meter out device of the embodiment of the present invention
Epicoele pressure release.Meter out device includes the 4th two-way plug-in valve 14, the coordinate with the 4th two-way plug-in valve 14 the 4th
The solenoid directional control valve 12 of two-way plug-in valve cover plate 13 and the 4th.4th solenoid directional control valve 12 optionally can insert the 4th two-way
The A mouths of dress valve 14 are connected with the control port of the 4th two-way plug-in valve cover plate 13.Wherein, the A mouths of the 4th two-way plug-in valve 14
It is connected to oil return inlet T 0, the outspoken epicoele 3a for opening cylinder 3 of the B of the 4th two-way plug-in valve 14 and the 4th solenoid directional control valve 12
P mouthfuls.The A mouths of 4th solenoid directional control valve 12 connect the 4th two-way by the control port on the 4th two-way plug-in valve cover plate 13 and inserted
The spring cavity of valve 14 is filled, the T mouths of the 4th solenoid directional control valve 12 are connected to the A mouths of the 4th two-way plug-in valve 14.4th electromagnetism
The B mouths closing of reversal valve 12.
Electromagnet Y2, when electromagnet Y2 is powered off, the 4th solenoid directional control valve 12 are provided with the 4th solenoid directional control valve 12
P mouths connect A mouthful, T mouthfuls connections B mouthfuls.Now, the hydraulic oil in oil circuit 19b can enter from the B mouths of the 4th two-way plug-in valve 14
The P mouths of 4th solenoid directional control valve 12, then enter from the A mouths of the 4th solenoid directional control valve 12 spring of the 4th two-way plug-in valve 14
In chamber, the 4th two-way plug-in valve 12 is closed.
When electromagnet Y2 is powered, the A mouths of the 4th solenoid directional control valve 12 connect T mouthfuls, and P mouthfuls connect B mouthfuls.Now, the 4th
The hydraulic oil of the B mouths of two-way plug-in valve 14 is cut off, and the hydraulic oil in the spring cavity of the 4th two-way plug-in valve 14 is electric from the 4th
The A mouths of magnetic reversal valve 12 flow to the A mouths of the 4th two-way plug-in valve 14, then return to fuel tank from oil return inlet T 0, and now the 4th two-way is inserted
Dress valve 14 can be opened under the oil pressure of the B mouths of its own, and the hydraulic oil in oil circuit 19b can pass through the 4th two-way plug-in valve
Oil return inlet T 0 is flowed to after 14, and finally flows back to fuel tank.
High-pressure compensating device optionally will can soon open the epicoele 3a of cylinder 3 and high pressure repairing oil communication with to opening cylinder soon
Supplement hydraulic oil in 3 epicoele 3a.High-pressure compensating device includes the electronic pressure relay 29 that is connected with epicoele 3a and successively
It is connected on the first check valve 16 and the 5th solenoid directional control valve 15 between epicoele 3a and high pressure repairing oil circuit.The energy of first check valve 16
Enough prevent that the hydraulic oil in epicoele 3a from flowing to high pressure repairing oil circuit, the 5th solenoid directional control valve 15 can be according to electronic pressure relay
29 signal and optionally by the first check valve 16 and high pressure repairing oil communication.
Wherein, as shown in Figure 2, the A mouths of the 5th solenoid directional control valve 15 connect the first check valve 16, and P mouthfuls of connection high pressures are mended
P3, B mouthfuls of closings of hydraulic fluid port.5th solenoid directional control valve 15 has electromagnet Y4, when electromagnet Y4 is powered off, the 5th electromagnetic switch
The A mouths of valve 15 are not connected with P, and the hydraulic oil in now high pressure repairing mouthful P3 can not be reached in the first check valve 16, work as electromagnetism
When iron Y4 is powered, the A mouths of the 5th solenoid directional control valve 15 are connected with P mouthfuls, the hydraulic oil reachable first in high pressure repairing mouthful P3
Check valve 16, and entered by first check valve 16 in oil circuit 19b, can thus repairing be carried out to epicoele 3a.
Upper roller compensating cylinder hydraulic control circuit in the present embodiment, including be connected with the rod chamber 4a of upper roller compensating cylinder 4
First solenoid directional control valve 22, accumulator assembly and three relief valves optionally connected with rod chamber 4a and high pressure fuel source
23, the first solenoid directional control valve 22 can close the rod chamber 4a, or by rod chamber 4a and high pressure fuel source or oil return pipe
Road is connected, and three relief valves 23 can arrange the hydraulic oil in rod chamber 4a to pressure release oil circuit.
In the present embodiment, the first solenoid directional control valve 22 is the three position four-way directional control valve of O-shaped function double electromagnet, and this first
It is unidirectional that prevent hydraulic oil from flowing to high pressure oil inlet P 1 second is connected between the P mouths and high pressure oil inlet P 1 of solenoid directional control valve 22
Valve 21, the B mouths closing of first solenoid directional control valve 22,4a, T mouthfuls of connection oil return openings of rod chamber of A mouthfuls of connection upper roller compensating cylinders 4
T0。
The accumulator assembly of the present embodiment includes accumulator control valve group 26 and is connected in accumulator control valve group 26
Shock-proof pressure gauge 27 and accumulator 25.Accumulator assembly is connected between rod chamber 4a and oil return inlet T 0.In three relief valves
The 6th solenoid directional control valve 24 is connected between 23 and rod chamber 4a.The connection of A mouths the rod chamber 4a, B of 6th solenoid directional control valve 24
Mouth closing, the A mouths of P mouthfuls of three relief valves 23 of connection.The P mouths connection high pressure oil inlet P 1 of three relief valve 23, this three is removed heat by catharsis
The Y mouths connection oil return opening TO of pressure valve 23.
When the electromagnet Y6 of the first solenoid directional control valve 22 is powered and electromagnet Y5 is powered off, first solenoid directional control valve 22
P mouthfuls connect with A mouthfuls, after now the hydraulic oil in high pressure oil inlet P 1 is by the second check valve 23, then are changed by first electromagnetism
The rod chamber 4a of upper roller compensating cylinder 4 is reached to valve 22.
When electromagnet Y5 and electromagnet Y6 power-off is powered off simultaneously, the rod chamber 4a of the upper roller compensating cylinder 4 can be closed, this
Sample can ensure that the hydraulic oil in rod chamber 4a will not flow away, and improve security.And when electromagnet Y5 is powered and electromagnet Y6
During power-off, the hydraulic oil in rod chamber 4a can flow to oil return inlet T 0 after first solenoid directional control valve 22.
In the electromagnet Y7 power-off of the 6th solenoid directional control valve 24, the separated company of rod chamber 4a and three relief valves 23
Connect, and when electromagnet Y7 is powered, rod chamber 4a is connected with three relief valves 23, the hydraulic oil of high pressure oil inlet P 1 by this three
Relief valve 23 is entered in rod chamber 4a, if the oil pressure in rod chamber 4a has more than the setting value of three relief valves 23
Hydraulic oil in rod cavity 4a can flow to oil return inlet T 0 from the Y mouths of three relief valves 23.Inserted in each two-way of the present embodiment
In valve cover, embedded fixed damping and stroke adjustment screw rod can be set, so as to adjust relative to two-way plug-in valve
Valve core opening size, realizes flow restriction control function, and when inserted valve is opened and closed generation can be avoided to vibrate.
A top petrol tank 28 can also be connected in the cavity of resorption for opening cylinder 3 soon, the oil level of the top petrol tank 28 is higher than across switch 3
Cavity of resorption highest oil level, can so to open in the cavity of resorption of cylinder 3 have hydraulic oil all the time soon, can effectively reduce and open cylinder soon
3 noise during up and down motion.
The pipe straightener for introducing the present embodiment in detail below opens cylinder, the work of upper roller compensating cylinder hydraulic control system soon
Process.
First, cylinder 3 is opened soon drives upper straightening roll 6 to drop quickly to operating position by peak.In the process, above roll out
Weighing apparatus cylinder 4 is in opens pressure release state soon, and now the electromagnet Y5 of the first solenoid directional control valve 22 is powered and electromagnet Y6 is powered off, the 6th electricity
The electromagnetism of magnetic reversal valve 24 changes the hydraulic oil that Y7 is also in off-position, rod chamber 4a can be with unimpeded entrance oil return opening
T0.And the electromagnet Y1 of the second solenoid directional control valve 11 now not it is electric, the electromagnet Y3 of the 3rd solenoid directional control valve 17 obtains electric, the 4th
The electromagnet Y2 power-off of solenoid directional control valve 12.Low pressure oil in low pressure oil inlet P 2 can be entered in the epicoele 3a for opening cylinder 3 soon,
The piston for opening cylinder 3 soon is promoted rapidly to decline.Due to now using low pressure oil sources, thus the portion such as cylinder cap to opening cylinder 3 soon
The impact that position is caused is smaller, and goes the noise produced also very small.
Straightening operation can be started when opening soon after cylinder 3 is moved downward in place, now the electromagnet of the second solenoid directional control valve 11
Y1 obtains electric, and now the electromagnet Y5 of the first solenoid directional control valve 22 is powered off and electromagnet Y6 is powered.High pressure in high pressure oil inlet P 1
Oil is entered in the epicoele 3a for opening cylinder 3 soon, meanwhile, another part hydraulic oil is also entered in the rod chamber 4a of upper roller compensating cylinder 4,
Upper straightening roll 6 is locked.During steel pipe is aligned, enough correction pressure can be provided to opening cylinder 3 soon using hydraulic oil.
And when the oil pressure reduction for the epicoele 3a that electronic pressure relay 29 is detected, the electromagnet Y4 of the 5th solenoid directional control valve 15 can be made
Obtain electric, the hydraulic oil in high pressure repairing mouthful P3 is added in oil circuit 19b, so as to improve the pressure in epicoele 3a.
When opening drive 6 rapid increase of upper straightening roll of cylinder 3 soon, electromagnet Y3 power-off, electromagnet Y4 is powered, and electromagnet Y6 leads to
Electricity, the hydraulic oil opened soon in the epicoele 3a of cylinder 3 is quickly flowed away by the 4th two-way plug-in valve 14, and hydraulic oil is entered and rolled out
Weigh in the rod chamber 4a of cylinder 4, drive the rapid increase of smoothing roll 6.
In straightener pass adjustment, the first solenoid directional control valve 22 is in middle position, the electromagnet of the 6th solenoid directional control valve 24
Y7 obtains electric, now, when motor 1 drives the up and down motion of leading screw 5 by reductor 2, has one in the rod chamber 4a of upper roller compensating cylinder 4
Fixed oil pressure, can eliminate the gap of leading screw 5, improve Adjustment precision.
The present embodiment can rapidly switch high pressure fuel source and low pressure oil sources by setting two-way plug-in valve, flow resistance loss is small,
Negotiability is big, good seal, leakage are few, it is ensured that the optimization of high pressure and low pressure secondary pressure in cylinder technological action is opened soon is matched somebody with somebody
Close, so as to reduce the impact for opening cylinder soon, effectively protect the position such as cylinder cap and sealing, extend the service life for opening cylinder soon, it is special
It is not the pipe straightener for big specification, effect is especially prominent.Also, it is combined using high-pressure low-flow, low pressure and mass flow
Fuel system, can further reduce the power of hydraulic system, reach the purpose of notable energy-conservation, save manufacture, run into
This.
The illustrative embodiments of the present invention are particularly shown and described above.It should be understood that the invention is not restricted to institute
Disclosed embodiment, on the contrary, it is intended to cover comprising various modifications in the spirit and scope of the appended claims
And equivalent arrangements.
Claims (8)
1. a kind of pipe straightener hydraulic control system for being used to open cylinder and upper roller compensating cylinder soon, it is characterised in that including：
Open cylinder hydraulic control circuit soon, including high-low pressure oil sources selection device, meter in device, high-pressure compensating device and return
Oily throttling arrangement, the high-low pressure oil sources selection device can selectively communicate with high pressure fuel source or low pressure oil sources, with to fast
The epicoele supply hydraulic oil or low pressure oil of cylinder are opened, the meter in device can open or close the epicoele for opening cylinder soon
The epicoele for opening cylinder soon can be communicated to by the connection between fuel feeding and the high-low pressure oil sources selection device, the meter out device
Return line so as to open the epicoele pressure release of cylinder soon, and the high-pressure compensating device can be optionally high by the epicoele and one of opening cylinder soon
Repairing oil communication is pressed to supplement hydraulic oil into the epicoele for opening cylinder soon；
Upper roller compensating cylinder hydraulic control circuit, including be connected with the rod chamber of upper roller compensating cylinder the first solenoid directional control valve, energy storage
Device assembly and three relief valves optionally connected with the rod chamber and high pressure fuel source, the first solenoid directional control valve energy
Enough to connect the rod chamber with high pressure fuel source or return line, three relief valve can be by the hydraulic oil in rod chamber
Arrange to pressure release oil circuit.
2. the pipe straightener hydraulic control system according to claim 1 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, the high-low pressure oil sources selection device includes：
First two-way plug-in valve and the first two-way plug-in valve cover plate being matched therewith, the A mouths and B of first two-way plug-in valve
Mouth is respectively connecting to the control port of low pressure oil sources and the first two-way plug-in valve cover plate；
Second two-way plug-in valve cover plate and the second two-way plug-in valve being matched therewith, the B mouths of second two-way plug-in valve with
The B mouths connection of first two-way plug-in valve, the A mouths of second two-way plug-in valve are connected with high pressure fuel source；
Second solenoid directional control valve, second solenoid directional control valve can be optionally by the control of the second two-way plug-in valve cover plate
Liquefaction mouthful is connected with drain line or high pressure fuel source.
3. the pipe straightener hydraulic control system according to claim 2 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, the meter in device includes the 3rd solenoid directional control valve, shuttle valve, the 3rd two-way plug-in valve and inserted with the 3rd two-way
Fill the 3rd two-way plug-in valve cover plate that valve coordinates；The A mouths of 3rd two-way plug-in valve connect the B of second two-way plug-in valve
Mouthful, the epicoele of cylinder is opened in the B mouths connection of the 3rd two-way plug-in valve soon；Two oil inlets of the shuttle valve are connected respectively opens cylinder soon
Epicoele and the 3rd two-way plug-in valve A mouths；3rd solenoid directional control valve can be by the control oil of the 3rd inserting valve cover
Mouth is connected with the oil-out or drain line of the shuttle valve.
4. the pipe straightener hydraulic control system according to claim 3 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, the meter out device includes the 4th two-way plug-in valve, the 4th two-way coordinated with the 4th two-way plug-in valve
Valve cover and the 4th solenoid directional control valve are inserted, the A mouths of the 4th two-way plug-in valve are connected with return line, the described 4th
The B mouths of two-way plug-in valve are connected with the epicoele for opening cylinder soon, and the 4th solenoid directional control valve can optionally will be described
The A mouths of 4th two-way plug-in valve are connected with the control port of the 4th two-way plug-in valve cover plate.
5. the pipe straightener hydraulic control system according to claim 1 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, the high-pressure compensating device includes the electronic pressure relay connected with the epicoele and is sequentially connected in series on described
The first check valve and the 5th solenoid directional control valve between chamber and the high pressure repairing oil circuit；First check valve is prevented from institute
State the hydraulic oil in epicoele and flow to the high pressure repairing oil circuit, the 5th solenoid directional control valve can according to the electron pressure after
The signal of electrical equipment and optionally by first check valve and the high pressure repairing oil communication.
6. the pipe straightener hydraulic control system according to claim 1 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, first solenoid directional control valve is the three position four-way directional control valve of O-shaped function double electromagnet, first solenoid directional control valve
P mouthfuls are connected with the second check valve for preventing hydraulic oil from flowing to high-pressure oil passage between high-pressure oil passage.
7. the pipe straightener hydraulic control system according to claim 1 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, also the top petrol tank including connecting the cavity of resorption for opening cylinder soon.
8. the pipe straightener hydraulic control system according to claim 2 for being used to open cylinder and upper roller compensating cylinder soon, it is special
Levy and be, the A mouths of first two-way plug-in valve are connected to low pressure oil sources, second two-way by low pressure and mass flow oil inlet
The A mouths of inserted valve are connected to high pressure fuel source by high-pressure low-flow oil inlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510952334.3A CN105443466B (en) | 2015-12-19 | 2015-12-19 | Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon |
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| CN201510952334.3A CN105443466B (en) | 2015-12-19 | 2015-12-19 | Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon |
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| CN105443466B true CN105443466B (en) | 2017-07-18 |
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| CN110976556A (en) * | 2019-12-18 | 2020-04-10 | 太原恒信科达重工成套设备有限公司 | Novel quick-opening cylinder stable response device of thermal straightening machine |
| CN111608967B (en) * | 2020-04-30 | 2022-05-10 | 太原科技大学 | Hydraulic pressing control system for spinning machine die |
| CN112610542B (en) * | 2020-12-15 | 2022-03-25 | 库卡机器人(广东)有限公司 | Balance cylinder hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0771408A (en) * | 1993-09-02 | 1995-03-17 | Kubota Corp | Hydraulic circuit structure of work vehicle |
| GB2360728B (en) * | 2000-03-30 | 2004-08-18 | Tradewise Engineering Ltd | Fluid-operated circuit for setting the top and bottom dead center location of the punch actuation cylinder in punching machines |
| CN1903476A (en) * | 2005-07-28 | 2007-01-31 | 中南大学 | Compensation synchronous balancing control system for large die forging hydraupress |
| CN101791640B (en) * | 2010-03-22 | 2012-05-30 | 中信重工机械股份有限公司 | Distribution method of balance and locking cylinders of large multi-cross roll straightener |
| CN103447317B (en) * | 2013-09-05 | 2015-03-25 | 太原重工股份有限公司 | Hydraulic control system of upper roller balancing device of pilger mill |
| CN104525632B (en) * | 2014-12-18 | 2017-01-25 | 太原重工股份有限公司 | Inclined roller type steel pipe straightening machine and upper straightening roller pressing-down device thereof |
| CN104500483B (en) * | 2014-12-18 | 2016-08-17 | 太原重工股份有限公司 | Cycle pipe mill and flow thereof are switched fast hydraulic control device with pressure |
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