CN107186264A - A kind of hydraulic system of hydraulic shear - Google Patents
A kind of hydraulic system of hydraulic shear Download PDFInfo
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- CN107186264A CN107186264A CN201710502491.3A CN201710502491A CN107186264A CN 107186264 A CN107186264 A CN 107186264A CN 201710502491 A CN201710502491 A CN 201710502491A CN 107186264 A CN107186264 A CN 107186264A
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- hydraulic
- valve
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- shearing
- stop valve
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- 238000010008 shearing Methods 0.000 claims abstract description 78
- 239000003921 oil Substances 0.000 claims abstract description 36
- 230000009471 action Effects 0.000 claims abstract description 34
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of hydraulic system of hydraulic shear, including hydraulic oil container, hydraulic power system and the shearing hydraulic cylinder that be connected with hydraulic shear, hydraulic oil container, hydraulic power system and shears hydraulic cylinder and is connected in hydraulic main circuit, in addition to：Hydraulic cutting valve group, is connected in hydraulic main circuit, major loop on or off is realized commutation；Hydraulicdirectional control valve, the break-make for controlling hydraulic cutting valve group.Using the principle of volumetric speed control, hydraulic cutting valve group is connected between hydraulic oil container and shearing hydraulic cylinder, used as switch valve, and hydraulic oil flows through hydraulic cutting valve group and there is no restriction loss, hydraulicdirectional control valve only plays control action, the hydraulic fluid flow rate for flowing through hydraulicdirectional control valve is very small, restriction loss is small, therefore hydraulic shear action needs great power and speed, hydraulic power system is provided with corresponding pressure oil and flow, the energy expenditure of hydraulic shear shear history can be reduced to greatest extent, reduce the waste of the energy.
Description
Technical field
The invention belongs to technical field of metallurgical equipment, and in particular to a kind of hydraulic system of hydraulic shear.
Background technology
Hydraulic shear, as the visual plant on metal plate and belt Product processing and post treatment line, is essentially all to use liquid at present
Pressure valve is controlled, and its principle belongs to throttle grverning control.Fig. 1 show the principle schematic of prior art, is logical in the prior art
The dynamical system that constant pressure variable displacement pump is hydraulic shear is crossed, is driven with controlling the hydraulic fluid pressure of hydraulic shear constant.According to shears technique
It is required that the pressure oil for actually entering shearing hydraulic cylinder, which is passing ratio reversal valve or flow speed control valve etc., carries out throttle grverning control, it is full
Flow and pressure needed for foot shearing, larger energy loss is caused in the throttle grverning controlling unit.
Specifically, due to needing to consider that the opening degree of lower scissor blade on the reasons such as smooth threading, hydraulic shear is often larger, and it is real
Lower scissor blade overlaps the distance (L1 in Fig. 2) for implementing shear action typically only less than the 30% of range (L2 in Fig. 2) on border,
That is a shear action of shearing hydraulic cylinder has 70% stroke to be unloaded, and this 70% lost motion actually needs
Hydraulic pressure it is relatively low, the loss of such a big chunk hydraulic energy source is in the throttle grverning controlling unit of hydraulic valve；Meanwhile, liquid
Compression shear be also entirely during backhaul it is unloaded, it is necessary to pressure it is very low, equally exist larger hydraulic oil throttling loss；This
Outside, hydraulic shear one or more shear action completion after, it is necessary to the shearing instruction of next group be waited, although this period
Hydraulic shear does not have traffic demand, in the absence of the throttling energy loss of hydraulic shear in itself, and, it is necessary to hydraulic power system under this operating mode
Blanket insurance holds constant hydraulic power source, is typically implemented using asynchronous machine and constant pressure variable displacement pump, now asynchronous machine is also in volume
Determine to operate under rotating speed, there is substantial amounts of power loss.The energy loss of three above main aspect, accounts for hydraulic shear control system energy
More than the 50% of amount, that is to say, that the energy that conventional hydraulic shear has nearly half is wasted.
The content of the invention
The deficiencies in the prior art in view of the above, it is an object of the invention to provide a kind of hydraulic system of hydraulic shear,
It is simple in construction, reduce energy waste.
In order to achieve the above objects and other related objects, technical solution of the present invention is as follows：
A kind of hydraulic system of hydraulic shear, including hydraulic oil container, hydraulic power system and the shearing being connected with hydraulic shear
Hydraulic cylinder, the hydraulic oil container, hydraulic power system and shearing hydraulic cylinder are connected in hydraulic main circuit, in addition to：
Hydraulic cutting valve group, is connected in hydraulic main circuit, for making major loop on or off；
Hydraulicdirectional control valve, the break-make for controlling hydraulic cutting valve group.
Using said structure, the hydraulic system uses the principle of volumetric speed control, and hydraulic cutting valve group is connected to hydraulic oil container
Between shearing hydraulic cylinder, used as switch valve, and hydraulic oil flows through hydraulic cutting valve group and there is no restriction loss, liquid
Pressure reversal valve only plays control action, and the hydraulic fluid flow rate for flowing through hydraulicdirectional control valve is smaller, and restriction loss is small, therefore hydraulic shear is acted
Great power is needed, hydraulic power system is provided with corresponding pressure oil and flow, hydraulic shear can be reduced to greatest extent
The energy expenditure of shear history, reduces the waste of the energy.
Further, the hydraulicdirectional control valve is connected with hydraulic main circuit.
Further, the hydraulic cutting valve group includes the first stop valve, the second stop valve, the 3rd stop valve and the 4th cut-out
Valve, the rodless cavity of the shearing hydraulic cylinder is connected to oil feed line through the first stop valve all the way, and another stop valve of road second connects
Return line is connected to, the rod chamber of the shearing hydraulic cylinder is connected to return line, another Lu Jing through the 3rd stop valve all the way
Four stop valves are connected to oil feed line；Described hydraulicdirectional control valve P mouthfuls are connected to oil feed line, and T mouthfuls are connected to return line, A mouthfuls
Be connected to the control bit of the second stop valve and the 4th stop valve, B mouthfuls be connected to the first stop valve and the 3rd stop valve control bit.
Further, the hydraulic cutting valve group is plate valve or inserted valve, and with control throttle orifice.
Further, the hydraulic power system includes servo-driver, servomotor and hydraulic pump, the hydraulic pump connection
In hydraulic main circuit.
Wherein hydraulic power system provides the liquid of corresponding pressure as the power resources of shearing hydraulic cylinder according to shearing demand
Force feed, it drives hydraulic pump to realize the speed control of shearing hydraulic cylinder by servo-driver and servomotor；Hydraulic power
Realize and the direction of action for shearing hydraulic cylinder is controlled, mainly there are two by the combination of hydraulic cutting valve and hydraulicdirectional control valve in source
Action：Shearing and backhaul；After the shear action of a cycle is completed, shearing hydraulic cylinder is retracted, in holding fix, now liquid
Press Force system to shut down, wait and start action after shearing demand next time again.
Further, the hydraulic pump is constant displacement pump or variable pump.
Further, the hydraulic pump is plunger pump, gear pump or vane pump.
Further, one or two actions of upper lower scissor blade complete shearing in the shearing Driven by Hydraulic Cylinder hydraulic shear.
Further, the hydraulicdirectional control valve carries control throttle orifice, and by controlling the break-make of hydraulic cutting valve group to change
The direction of motion of hydraulic cylinder.
The operation principle of the present invention is as follows：
First, shearing hydraulic cylinder be in holding fix, now the upper lower scissor blade of hydraulic shear open to maximum opening degree so as to
Hydraulic shear is passed through in the metal plate and belt being sheared；After the metal plate and belt being sheared passes through hydraulic shear, energy-saving hydraulic is cut
The instruction of shearing is waited, after shearing instruction is received, the servo-driver and servomotor of hydraulic power system bring into operation, band
Hydrodynamic press pump is started working, and the hydraulic pressure oil of hydraulic pump output enters liquid by the control of hydraulic cutting valve and hydraulicdirectional control valve
The rodless cavity of cylinder pressure, so that drive shearing hydraulic cylinder to carry out shear action, before hydraulic shear does not implement really shearing, by
The pressure needed in hydraulic cylinder is relatively low, and now servomotor and hydraulic pump are operated with the maximum speed set, shearing hydraulic cylinder with
Maximum speed implements shear action, and when upper lower scissor blade touches the strip being sheared, servo-driver and servomotor exist
The moment of torsion of setting is sufficient for the value needed for shearing, until completing shear action, due to no restriction loss, and hydraulic shear action is needed
Great power is wanted, hydraulic power system is provided with corresponding pressure oil and flow, from the purpose for reaching energy-conservation.When once shearing
After the completion of action, shearing hydraulic cylinder needs counteragent to open shear blade opening degree, now required hydraulic power oil pressure
Relatively low, by the driving of servomotor, hydraulic pump can export the pressure oil of phase flow therewith, reduce restriction loss, reach
To energy-saving effect., it is necessary to wait next group shear action after a collection of shearing instruction terminates, now servo-driver and servo are electric
Machine can stop operating, and be started running again until receiving next group shearing instruction, can also save this period because motor is empty
Turn the electric power energy of consumption.
As described above, the beneficial effects of the invention are as follows：
The present invention using volumetric speed control control principle, servo-driver and servomotor according to the speed of shear action,
Shearing force requirement, the driving rotating speed that pump is adjusted in real time reaches the purpose of shearing property；Hydraulicdirectional control valve is according to the dynamic of shearing property
Make the direction of action of direction switching shearing hydraulic cylinder, realize the sampling action of a shearing.Pass through big orifice, the hydraulic pressure of big flow
Stop valve realizes on or off oil circuit, and is controlled by the hydraulicdirectional control valve of low discharge, due to there is no restriction loss,
The energy expenditure of hydraulic shear shear history can be reduced to greatest extent.In addition, hydraulic control circuit is simple, convenient control, fit
Share in the shearing of the metal plate and belt including steel.
Brief description of the drawings
Fig. 1 is the structure principle chart of prior art；
Fig. 2 is structure principle chart of the invention.
Piece mark explanation
1-hydraulic oil container
2-servo-driver
3-servomotor
4-hydraulic pump
51-the first stop valve
52-the second stop valve
53-the three stop valve
54-the four stop valve
6-hydraulicdirectional control valve
7-shearing hydraulic cylinder
8-hydraulic shear lower scissor blade
9-hydraulic shear upper scissor blade
10-it is sheared metal plate and belt
L1-actual shearing stroke
L2-hydraulic cylinder travel
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Embodiment
As shown in Fig. 2 a kind of hydraulic system of hydraulic shear, including hydraulic oil container 1, hydraulic shear, hydraulic power system, shearing
The hydraulic cutting valve group of hydraulic cylinder 7 and hydraulicdirectional control valve 6, wherein shearing hydraulic cylinder 7 is connected with hydraulic shear, hydraulic oil container 1, hydraulic pressure are moved
Force system, hydraulic cutting valve group and shearing hydraulic cylinder 7 are connected in hydraulic main circuit, and hydraulic power system connects with hydraulic oil container 1
Connect, pressure oil is provided for major loop；Hydraulic cutting valve group is connected in hydraulic main circuit, for making major loop on or off,
Play a part of major loop switch；Hydraulicdirectional control valve 6 is used to control the break-make of hydraulic cutting valve group to realize that shearing hydraulic cylinder 7 is acted
Commutation.
Different from traditional throttling control, hydraulic shear of the present invention uses the principle of volumetric speed control, the connection of hydraulic cutting valve group
Between hydraulic oil container 1 and shearing hydraulic cylinder 7, used as switch valve, hydraulic oil flows through hydraulic cutting valve group and there is no
Restriction loss, hydraulicdirectional control valve 6 plays control action, and the hydraulic fluid flow rate for flowing through hydraulicdirectional control valve 6 is smaller, and restriction loss is small,
Therefore hydraulic shear action needs great power, and hydraulic power system is provided with corresponding pressure oil and flow, can be with maximum limit
The energy expenditure of the reduction hydraulic shear shear history of degree, reduces the waste of the energy.Hydraulicdirectional control valve 6 and hydraulic main circuit in this example
It is may be provided in connection, other embodiment in single hydraulic control circuit.
Wherein, hydraulic power system includes servo-driver 2, servomotor 3 and hydraulic pump 4, servo-driver 2 and servo
Motor 3 is connected, and servomotor 3 is connected with hydraulic pump 4, and driving hydraulic pump 4 is rotated, and hydraulic pump 4 is connected in hydraulic main circuit, liquid
Press pump 4 is connected by pipeline with hydraulic oil container 1, is whole hydraulic main circuit fuel feeding.Hydraulicdirectional control valve 6 carries control throttle orifice,
And by controlling the break-make of hydraulic cutting valve group to change the direction of motion of hydraulic cylinder.
Hydraulic power system provides the hydraulic pressure of corresponding pressure as the power resources of shearing hydraulic cylinder 7 according to shearing demand
Oil, it drives hydraulic pump 4 to realize the speed control of shearing hydraulic cylinder 7 by servo-driver 2 and servomotor 3；Hydraulic pressure is moved
Realize and the direction of action for shearing hydraulic cylinder 7 is controlled, mainly have by the combination of hydraulic cutting valve and hydraulicdirectional control valve 6 in power source
Two actions：Shearing and backhaul；After the shear action of a cycle is completed, shearing hydraulic cylinder 7 is retracted, in holding fix,
Now hydraulic power system shuts down, and waits and starts action after shearing demand next time again.
Specifically, hydraulic cutting valve group is cut including the first stop valve 51, the second stop valve 52, the 3rd stop valve 53 and the 4th
Disconnected valve 54, the rodless cavity of shearing hydraulic cylinder 7 is connected to oil feed line, another stop valve of road second through the first stop valve 51 all the way
52 are connected to return line, and the rod chamber for shearing hydraulic cylinder 7 is connected to return line, another road warp through the 3rd stop valve 53 all the way
4th stop valve 54 is connected to oil feed line；6P mouthfuls of hydraulicdirectional control valve is connected to oil feed line, and T mouthfuls are connected to return line, A mouthfuls
The control bit of the second stop valve 52 and the 4th stop valve 54 is connected to, B mouthfuls are connected to the first stop valve 51 and the 3rd stop valve 53
Control bit.
I.e.：Hydraulic oil is divided into three oil circuits after hydraulic pump 4, and the first oil circuit is connected to the rodless cavity of shearing hydraulic cylinder 7,
First stop valve 51 is arranged on the first oil circuit；Second oil circuit is connected to the rod chamber of shearing hydraulic cylinder 7, the 4th stop valve
54 are arranged on the second oil circuit；3rd oil circuit is connected to the P mouths of hydraulicdirectional control valve 6；
The rodless cavity for shearing hydraulic cylinder 7 is connected to return line (or hydraulic oil container 1), second cut-out through the 4th oil circuit
Valve 52 is arranged on the 4th oil circuit；The rod chamber for shearing hydraulic cylinder 7 is connected to return line (or hydraulic oil container through the 5th oil circuit
1), the 3rd stop valve 53 is arranged on the 5th oil circuit；The T mouths of hydraulicdirectional control valve 6 are connected to return line through the 6th oil circuit
(or hydraulic oil container 1).
Wherein, each hydraulic cutting valve is plate valve or inserted valve, and with control throttle orifice；Hydraulic pump 4 be constant displacement pump or
Variable pump, can be plunger pump, gear pump or vane pump by species.Shear upper lower scissor blade in the driving hydraulic shear of hydraulic cylinder 7
One or two actions complete shearing.And the system can connect one or more shearing hydraulic cylinders 7.
The workflow of present embodiment is as follows：
First, shearing hydraulic cylinder 7 is in holding fix, after servo-driver 2 receives shearing instruction, drives servomotor
3 start to rotate, and servomotor 3 drives hydraulic pump 4 to rotate again so that hydraulic pump 4 is from the draw oil of hydraulic oil container 1, by energy
The amount conversion pressure oil output of hydraulic pump 4；Pressure fluid force feed flows to hydraulic cutting valve group and hydraulicdirectional control valve 6 by pipeline, in liquid
Under the control for pressing reversal valve 6, hydraulic cutting valve group only the first stop valve 51 and the 3rd stop valve 53 are negotiable, pressure fluids
Force feed is by the first stop valve 51 flow direction shearing hydraulic cylinder 7, so that driving hydraulic cylinder action starts shear action；Under hydraulic shear
Cutting edge 8 is not in contact with being sheared before metal plate and belt 10 after not overlapping or overlap with hydraulic shear upper scissor blade 9, due to being unloaded
So hydraulic pressure is relatively low, servo-driver 2 and servomotor 3 are not reaching to the torque of setting, are at this moment driven with the rotating speed of setting
Hydrodynamic cylinder pressure is acted, until cutting edge contact is sheared metal plate and belt 10, torque meeting automatic lifting to the numerical value needed, until completing
Shear action, this process is the Torque Control under restriction rotating speed；Hydraulic shear completes to clip to up to after setting position, in liquid
Under the commutation control for pressing reversal valve 6, hydraulic cutting valve group only the second stop valve 52 and the 4th stop valve 54 are negotiable, shearings
Hydraulic cylinder 7 start backhaul be decreased until arrival shearing holding fix, this process servo-driver 2, servomotor 3 be also for
Limit the Torque Control under rotating speed；One step completed shear action is just completed above, can repeatedly be sheared as needed,
Complete a batch of shearing task.When completing the shearing instruction of batch shearing task wait next batch, servo-driver
2nd, servomotor 3 is in halted state, and so whole hydraulic shear does not need consumed energy, until the shearing instruction of next batch is opened
Begin.
Because the system is in whole shear history, hydraulic shear action needs great power, and hydraulic power system is provided with
Corresponding pressure oil and flow, relative to the mode of traditional guarantee constant pressure, hydraulic shear can be reduced to greatest extent
The energy expenditure of shear history, reduces the waste of the energy.
For ease of understanding the energy-saving effect of this programme, the energy expenditure with regard to the system throttles with conventional constant pressure below controls
The mode of system is compared：
It is assumed that it is 50s, actual shearing process that a shear history, which is needed the time required to 100L pressure oils, whole shear history,
Required pressure is 14MPA, and the actual shearing time is 5s；The time of lost motion is 45s.
Then traditional throttling control mode, the pressure provided by hydraulic pump 4 is constant 14MPa, and is entirely being sheared
The pressure is kept in the 50s of process, the pressure and flow of hydraulic cylinder are entered by reversal valve control in Fig. 1.
Using this hydraulic system, because hydraulic shear action needs great power, hydraulic power system is provided with corresponding
Pressure oil and flow, then hydraulic pump 4 need to provide the hydraulic oil that 2-4MPa flows are 90L, actual shearing in unloaded 45s
During the 14MPa hydraulic oil that provides be 10L.Specific contrast see the table below：
As can be seen from the above table, this hydraulic system saves at least duration relative to conventional throttle control mode and is
45s pressure differences are 10MPa hydraulic oil.The system greatly reduces the rotating speed of motor in idle operation, reduces disappearing for energy
Consumption, and in the waiting process that adjacent two batch shears task, servo-driver 2 and servomotor 3 are in halted state, this
The whole hydraulic shear of sample does not need consumed energy, and restriction loss of the hydraulicdirectional control valve 6 in control process can be ignored.
The system uses the control principle of volumetric speed control, with reference to big orifice, the hydraulic valve commutation control of big flow, due to base
No restriction loss in sheet, the energy expenditure of hydraulic shear shear history can be reduced to greatest extent.In addition, hydraulic control circuit
Simply, convenient control, the shearing for the metal plate and belt being suitable for including steel.
Any person skilled in the art can all be carried out under the spirit and scope without prejudice to the present invention to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed spirit with
All equivalent modifications completed under technological thought or change, should be covered by the claim of the present invention.
Claims (9)
1. a kind of hydraulic system of hydraulic shear, including hydraulic oil container, hydraulic power system and the shearing liquid that is connected with hydraulic shear
Cylinder pressure, the hydraulic oil container, hydraulic power system and shearing hydraulic cylinder are connected in hydraulic main circuit, it is characterised in that：Also wrap
Include
Hydraulic cutting valve group, is connected in hydraulic main circuit, for making major loop on or off；
Hydraulicdirectional control valve, the break-make for controlling hydraulic cutting valve group.
2. a kind of hydraulic system of hydraulic shear according to claim 1, it is characterised in that：The hydraulicdirectional control valve and hydraulic pressure
Major loop is connected.
3. a kind of hydraulic system of hydraulic shear according to claim 1 or 2, it is characterised in that：The hydraulic cutting valve group
Including the first stop valve, the second stop valve, the 3rd stop valve and the 4th stop valve, the rodless cavity of the shearing hydraulic cylinder is passed through all the way
First stop valve is connected to oil feed line, another stop valve of road second is connected to return line, and the shearing hydraulic cylinder has
Rod cavity is connected to return line through the 3rd stop valve all the way, and another stop valves of Lu Jing tetra- are connected to oil feed line；The hydraulic pressure
P mouthfuls of reversal valve is connected to oil feed line, and T mouthfuls are connected to return line, A mouthfuls be connected to the second stop valve and the 4th stop valve control
Position processed, B mouthfuls be connected to the first stop valve and the 3rd stop valve control bit.
4. a kind of hydraulic system of hydraulic shear according to claim 1, it is characterised in that：The hydraulic cutting valve group is plate
Formula valve or inserted valve, and with control throttle orifice.
5. a kind of hydraulic system of hydraulic shear according to claim 1, it is characterised in that：The hydraulic power system includes
Servo-driver, servomotor and hydraulic pump, the hydraulic pump are connected in hydraulic main circuit.
6. a kind of hydraulic system of hydraulic shear according to claim 5, it is characterised in that：The hydraulic pump be constant displacement pump or
Variable pump.
7. a kind of hydraulic system of hydraulic shear according to claim 5, it is characterised in that：The hydraulic pump be plunger pump,
Gear pump or vane pump.
8. a kind of hydraulic system of hydraulic shear according to claim 1, it is characterised in that：The shearing Driven by Hydraulic Cylinder liquid
One or two actions of upper lower scissor blade complete shearing in compression shear.
9. a kind of hydraulic system of hydraulic shear according to claim 1, it is characterised in that：The hydraulicdirectional control valve is with control
Throttle orifice processed, and by controlling the break-make of hydraulic cutting valve group to change the direction of motion of hydraulic cylinder.
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| CN201710502491.3A CN107186264A (en) | 2017-06-27 | 2017-06-27 | A kind of hydraulic system of hydraulic shear |
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| CN201710502491.3A CN107186264A (en) | 2017-06-27 | 2017-06-27 | A kind of hydraulic system of hydraulic shear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953250A (en) * | 2018-08-09 | 2018-12-07 | 山东同创工控自动化有限公司 | One kind, which is butchered, cuts Air-control hydraulic station and its control method with pig's head |
| CN116532703A (en) * | 2023-07-06 | 2023-08-04 | 宁德时代新能源科技股份有限公司 | Coiled material shearing system, method, equipment and storage medium |
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| CN201346642Y (en) * | 2009-01-14 | 2009-11-18 | 宝山钢铁股份有限公司 | Hydraulic control circuit of single-cylinder driven hydraulic shear |
| CN101608644A (en) * | 2009-03-06 | 2009-12-23 | 上海人豪液压技术有限公司 | Combination hydraulic integrated control valve block system |
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| CN201592286U (en) * | 2010-01-14 | 2010-09-29 | 东北大学 | Hydraulic drive circuit of inclined throat shear |
| CN103418825A (en) * | 2012-07-03 | 2013-12-04 | 太原科技大学 | Energy-saving control method of hydraulic system of hydraulic rolling shear |
| CN102962272A (en) * | 2012-11-16 | 2013-03-13 | 江阴市洪腾机械有限公司 | Pipeline control device for oil cylinder of hydraulic cold-drawing machine |
| CN103896156A (en) * | 2014-04-24 | 2014-07-02 | 徐州重型机械有限公司 | Energy-saving hydraulic system for crane and crane |
| CN203891109U (en) * | 2014-04-24 | 2014-10-22 | 安徽惊天液压智控股份有限公司 | Novel hydraulic transmission system of hydraulic shear |
| CN204140536U (en) * | 2014-11-04 | 2015-02-04 | 鼎斯（上海）液压科技有限公司 | Metal shearing machine hydraulic control valve group |
| CN105502234A (en) * | 2015-09-17 | 2016-04-20 | 浙江大学宁波理工学院 | Speed-adjustable high-thrust hydraulic lifting table |
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Application publication date: 20170922 |