CN207701529U - A kind of hydraulic system of cutting machine of high low speed free switching - Google Patents
A kind of hydraulic system of cutting machine of high low speed free switching Download PDFInfo
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- CN207701529U CN207701529U CN201820014102.2U CN201820014102U CN207701529U CN 207701529 U CN207701529 U CN 207701529U CN 201820014102 U CN201820014102 U CN 201820014102U CN 207701529 U CN207701529 U CN 207701529U
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Abstract
The utility model is related to hydraulic machinery fields,The hydraulic system of cutting machine of specifically a kind of high low speed free switching,Including hydraulic station,Hydraulic station includes motor,Oil pump and oil sump,It is connected by electro-hydraulic valve group between oil pump and oil cylinder rodless cavity,Electro-hydraulic valve group includes the pressure regulation valve group being connect respectively with oil pump and the low velocity shear valve group being separately connected with pressure regulator valve group,The oil-filled valve group of high speed shear accumulator,The low velocity shear valve group other end is connect with oil cylinder rodless cavity,The oil-filled valve group other end of high speed shear accumulator is connect with high speed shear accumulator,High speed shear accumulator is also connect with pressure sensor A,High speed shear valve group is connected between high speed shear accumulator and oil cylinder rodless cavity,Knife rest return valve group is connected between oil cylinder rodless cavity and oil sump,Pressure regulation valve group is also connect by valve with return accumulator,Return accumulator is connect with cylinder rod chamber,Return accumulator is also connect with pressure sensor B；The utility model saves cost, easy to control.
Description
Technical field
The utility model is related to hydraulic machinery field, the hydraulic system of cutting machine of specifically a kind of high low speed free switching.
Background technology
The hydraulic system of cutting machine applied on production line at present, existing one pumping plant group of production line upper shearing plate machine hydraulic system
A kind of flow can only be provided, when needing flow bigger, Oil pump electrical machinery group and valve group are configured with maximum stream flow, cause wave
Take, cost is higher, is unfavorable for controlling.
Invention content
For the purpose of this utility model aiming at the usually only single piston of general oil cylinder rodless cavity, impulse stroke is solid
It is fixed, with the single problem in application scenario, provide a kind of hydraulic system of cutting machine of high low speed free switching.
The concrete scheme of the utility model is：A kind of hydraulic system of cutting machine of high low speed free switching, including hydraulic station,
Hydraulic station includes motor, oil pump and oil sump, and oil pump is connect with electro-hydraulic valve group one end, the electro-hydraulic valve group other end and shear
The oil cylinder rodless cavity of machine connects, and the electro-hydraulic valve group includes that pressure regulation valve group, low velocity shear valve group, high speed shear accumulator fill
Fuel tap group, high speed shear valve group, knife rest return valve group, wherein pressure regulator valve one end connect oil pump, the other end difference of pressure regulation valve group
It being connect with low velocity shear valve group, the oil-filled valve group of high speed shear accumulator, the low velocity shear valve group other end is connect with oil cylinder rodless cavity,
The oil-filled valve group other end of high speed shear accumulator is connect with high speed shear accumulator, high speed shear accumulator also with pressure sensor
A connections, are connected with high speed shear valve group, connect between oil cylinder rodless cavity and oil sump between high speed shear accumulator and oil cylinder rodless cavity
It is connected to knife rest return valve group, pressure regulation valve group is also connect by valve with return accumulator, and return accumulator connects with cylinder rod chamber
It connects, return accumulator is also connect with pressure sensor B.
Valve described in the utility model is board-like ball valve.
Operation principle：Utility model works are divided into that high speed shear accumulator is oil-filled, return accumulator is oil-filled, cuts at a high speed
Cut, low velocity shear and knife rest return, the oil-filled operation principle of high speed shear accumulator it is as follows：When pressure sensor A detections pressure is low
When the pressure of setting, low pressure regulating pressure valve group obtain it is electric, the oil-filled valve group of high speed shear accumulator obtain it is electric, other valve groups must not electricity,
Return accumulator valve is closed, and oil in hydraulic station from pumping out after the pressurization of pressure regulation valve group by high speed shear accumulator oil charge valve
Group is oil-filled to high speed shear accumulator, pressure regulation valve group and high speed when pressure sensor A detection pressure reaches setting upper pressure limit
Shear the equal dead electricity of the oil-filled valve group of accumulator, oil-filled completion；
The oil-filled operation principle of return accumulator is as follows：When pressure of the pressure sensor B detection pressure less than setting, low pressure
Pressure regulation valve group obtain it is electric, other valve groups must not electricity, return accumulator valve opening, oil pumped out from hydraulic station by pressure regulation valve group
It is oil-filled to return accumulator after pressurization, the pressure regulation valve group dead electricity when pressure sensor B detection pressure is when arrival setting upper pressure limit,
Oil-filled completion；
High speed shear operation principle is as follows：High speed shear power is provided by high speed shear accumulator, and system control high speed is cut
It cuts valve group and obtains electric, oil enters oil cylinder rodless cavity from high speed shear accumulator by high speed shear valve group, carries out shear action；
Low velocity shear operation principle is as follows：High-pressure pressure regulating valve group obtain it is electric, low velocity shear valve group obtain it is electric, oil pumped out from hydraulic station
Oil cylinder rodless cavity is entered by low velocity shear valve group after control valve pressurizes, carries out shear action；
Knife rest return operation principle is as follows：Knife rest return power is provided by return accumulator, and oil enters from return accumulator
Cylinder rod chamber, knife rest return valve group obtain electric, and the oil in oil cylinder rodless cavity flows back into hydraulic station.
Control method is practical simple, reliable compared with prior art for the utility model, easy to operate, when high speed shear, oil
Flow needed for cylinder is big, and general valve group and pumping plant are in order to provide big flow, and required Oil pump electrical machinery group power is big, big orifice valve group,
Be unfavorable for energy saving and hydraulic control, the utility model provides the power of high speed shear using accumulator, can be provided with moment needed for
Big flow, it is only necessary to which small flow gives accumulator repairing, and required Oil pump electrical machinery group power is small, valve group latus rectum is small, is conducive to control, saves
Cost.
Description of the drawings
Fig. 1 is the utility model connection diagram；
In figure：1- pressure sensors A, 2- high speed shear accumulator, the oil-filled valve group of 3- high speed shear accumulators, 4- motors,
5- oil pumps, 6- oil sumps, 7- low velocity shear valve groups, 8- pressure regulation valve groups, 81- high-pressure pressure regulating valve groups, 82- low pressure regulating pressure valve groups, 9- high
Speed shearing valve group, 10- knife rest return valve groups, 11- valves, 12- pressure sensors B, 13- return accumulator, 14- oil cylinder rodless
Chamber, 15- cylinder rod chambers.
Specific implementation mode
Referring to Fig. 1, the present embodiment includes hydraulic station, and hydraulic station includes motor 4, oil pump 5 and oil sump 6, oil pump 5 and electronics liquid
Pressure valve group one end connects, and the oil cylinder rodless cavity 14 of the electro-hydraulic valve group other end and plate shearing machine connects, the electro-hydraulic valve group
Including pressure regulation valve group 8, low velocity shear valve group 7, the oil-filled valve group 3 of high speed shear accumulator, high speed shear valve group 9, knife rest return valve
Group 10, wherein 8 one end of pressure regulation valve group connect oil pump 5, the other end of pressure regulation valve group 8 respectively with, low velocity shear valve group 7, cut at a high speed
It cuts the oil-filled valve group 3 of accumulator to connect, 7 other end of low velocity shear valve group is connect with oil cylinder rodless cavity 14, and high speed shear accumulator fills
3 other end of fuel tap group is connect with high speed shear accumulator 2, and high speed shear accumulator 2 is also connect with pressure sensor A1, is cut at a high speed
It cuts and is connected with high speed shear valve group 9 between accumulator 2 and oil cylinder rodless cavity 14, be connected between oil cylinder rodless cavity 14 and oil sump 6
Knife rest return valve group 10, pressure regulation valve group 8 are also connect by valve 11 with return accumulator 13, and return accumulator 13 has bar with oil cylinder
Chamber 15 connects, and return accumulator 13 is also connect with pressure sensor B12.
Pressure regulation valve group 8 described in the present embodiment is divided for high-pressure pressure regulating valve group 81 and low pressure regulating pressure valve group 82.
Valve 11 described in the present embodiment is board-like ball valve.
Claims (3)
1. a kind of hydraulic system of cutting machine of high low speed free switching, including hydraulic station, hydraulic station include motor, oil pump and oil
Pond, oil pump are connect with electro-hydraulic valve group one end, the oil cylinder rodless cavity connection of the electro-hydraulic valve group other end and plate shearing machine, special
Sign is：The electro-hydraulic valve group includes pressure regulation valve group, low velocity shear valve group, the oil-filled valve group of high speed shear accumulator, cuts at a high speed
Cut valve group, knife rest return valve group, wherein pressure regulator valve one end connects oil pump, the other end of pressure regulation valve group respectively with low velocity shear valve
The oil-filled valve group connection of group, high speed shear accumulator, the low velocity shear valve group other end are connect with oil cylinder rodless cavity, high speed shear accumulation of energy
The oil-filled valve group other end of device is connect with high speed shear accumulator, and high speed shear accumulator is also connect with pressure sensor A, is cut at a high speed
It cuts and is connected with high speed shear valve group between accumulator and oil cylinder rodless cavity, knife rest return is connected between oil cylinder rodless cavity and oil sump
Valve group, pressure regulation valve group are also connect by valve with return accumulator, and return accumulator is connect with cylinder rod chamber, return accumulator
Also it is connect with pressure sensor B.
2. a kind of hydraulic system of cutting machine of high low speed free switching according to claim 1, it is characterized in that：The pressure regulation
Valve group is divided into high-pressure pressure regulating valve group and low pressure regulating pressure valve group.
3. a kind of hydraulic system of cutting machine of high low speed free switching according to claim 1, it is characterized in that：The valve
For board-like ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014102.2U CN207701529U (en) | 2018-01-05 | 2018-01-05 | A kind of hydraulic system of cutting machine of high low speed free switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014102.2U CN207701529U (en) | 2018-01-05 | 2018-01-05 | A kind of hydraulic system of cutting machine of high low speed free switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701529U true CN207701529U (en) | 2018-08-07 |
Family
ID=63033701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820014102.2U Active CN207701529U (en) | 2018-01-05 | 2018-01-05 | A kind of hydraulic system of cutting machine of high low speed free switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701529U (en) |
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2018
- 2018-01-05 CN CN201820014102.2U patent/CN207701529U/en active Active
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