CN206530562U - A kind of double steel machine hydraulic system - Google Patents
A kind of double steel machine hydraulic system Download PDFInfo
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- CN206530562U CN206530562U CN201720008015.1U CN201720008015U CN206530562U CN 206530562 U CN206530562 U CN 206530562U CN 201720008015 U CN201720008015 U CN 201720008015U CN 206530562 U CN206530562 U CN 206530562U
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Abstract
A kind of double steel machine hydraulic system, the P mouths connection high-pressure oil passage P of proportional direction valve, the T mouths connection oil return circuit T of proportional direction valve, the A mouths and the X mouths of FD types balanced valve II of the A mouths connection FD types balanced valve I of proportional direction valve, the A mouths of the B mouths connection FD types balanced valve II of proportional direction valve, the cavity of resorption of the B mouths connection executing agency hydraulic cylinder of FD types balanced valve I, the P mouths connection oil circuit H of safety overflow valve I, the T mouths connection oil return circuit T of safety overflow valve I, the epicoele of the B mouths connection executing agency hydraulic cylinder of FD types balanced valve II, the P mouths connection oil circuit E of safety overflow valve II, the T mouths connection oil return circuit T of safety overflow valve II.The utility model proportion of utilization direction valve, balanced valve and safety overflow valve control the operation of hydraulic cylinder, make loop possess commutation it is steady, without impact, reliable operation the characteristics of.The speed runaway of hydraulic cylinder is prevented with the characteristic of balanced valve.Reduce hydraulic shock, the service life of prolonged mechanical equipment.
Description
Technical field
The utility model is related to metallurgy strip technology, more particularly to a kind of double steel machine hydraulic system.
Background technology
In steel plant's strip production technology, coil of strip tilting gear be production and steel coil transportation process through commonly used equipment,
Between steel coil transportation and up and down process, being frequently present of needs coil of strip being converted into vertical steel coils by Horizontal steel coil, or will be vertical
Coil of strip changes into Horizontal steel coil, to meet production needs.Such as：Coil of strip needs vertical placement in bell furnace, and in milling train and rear road
Coil of strip needs horizontal placement on the units such as process planisher, is now accomplished by tilting gear to overturn coil of strip.In conventional old-fashioned double steel
In machine hydraulic system, the action of hydraulic cylinder has only been simply done using reversal valve and flow speed control valve etc., but due to the heavy duty of coil of strip
And the change loaded in switching process causes the service life of the unstable of hydraulic system, influence hydraulic cylinder and relevant device,
And influence production.
Utility model content
The purpose of this utility model is to provide a kind of double steel machine hydraulic system, proportion of utilization direction valve, balanced valve and safety
Overflow valve controls the operation of hydraulic cylinder, make loop possess commutation it is steady, without impact, reliable operation the characteristics of.With the spy of balanced valve
Property prevents the speed runaway of hydraulic cylinder.Reduce hydraulic shock, the service life of prolonged mechanical equipment.
To achieve the above object, the utility model is realized using following technical scheme：
A kind of double steel machine hydraulic system, including proportional direction valve, FD types balanced valve I, FD types balanced valve II, safety overflow valve
Ith, safety overflow valve II, the P mouths connection high-pressure oil passage P of proportional direction valve, the T mouths connection oil return circuit T of proportional direction valve, ratio
The A mouths and the control port X of FD types balanced valve II of the A mouths connection FD types balanced valve I of direction valve, the B mouths connection of proportional direction valve
The A mouths of FD types balanced valve II, the B mouths of FD types balanced valve I pass through the cavity of resorption of oil circuit H connections executing agency hydraulic cylinder, safety overflow
The P mouths connection oil circuit H of valve I, the B mouths of T mouths connection oil return circuit T, the FD type balanced valve II of safety overflow valve I are connected by oil circuit E
Connect the epicoele of executing agency's hydraulic cylinder, the control port X connection oil circuit E of FD types balanced valve I, the P mouths connection of safety overflow valve II
Oil circuit E, the T mouths connection oil return circuit T of safety overflow valve II.
The proportional direction valve is the serial proportional direction valves of 4WRZ.
Compared with prior art, the beneficial effects of the utility model are：
A kind of double steel machine hydraulic system, proportion of utilization direction valve, balanced valve and safety overflow valve control the operation of hydraulic cylinder,
Make loop possess commutation it is steady, without impact, reliable operation the characteristics of.The speed runaway of hydraulic cylinder is prevented with the characteristic of balanced valve.
Reduce hydraulic shock, the service life of prolonged mechanical equipment.The utility model ensure that the even running of hydraulic cylinder, effectively subtract
Small hydraulic shock, and then ensure that the service life of hydraulic cylinder and associated machines.
Brief description of the drawings
Fig. 1 is a kind of structural representation of double steel machine hydraulic system of the utility model.
In figure：1- proportional direction valves, 2-FD types balanced valve I, 3-FD types balanced valve II, 4- safety overflow valves I, 5- overflow safely
Flow valve II, 6- oil circuit E, 7- oil circuit H, 8- executing agencies hydraulic cylinder, 9- channel opening and closing devices.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with the accompanying drawings：
See Fig. 1, a kind of double steel machine hydraulic system, including proportional direction valve 1, FD types balanced valve I 2, FD types balanced valve II 3,
Safety overflow valve I 4, safety overflow valve II 5, the P mouths connection high-pressure oil passage P of proportional direction valve 1, the T mouths connection of proportional direction valve 1
Oil return circuit T, the A mouths and the control port X of FD types balanced valve II 3 of the A mouths connection FD types balanced valve I 2 of proportional direction valve 1, than
The A mouths of the B mouths connection FD types balanced valve II 3 of proportional direction valve 1, the B mouths of FD types balanced valve I 2 pass through oil circuit H7 connections executing agency
The cavity of resorption of hydraulic cylinder 8, the P mouths connection oil circuit H7 of safety overflow valve I 4, T mouths connection oil return circuit T, the FD type of safety overflow valve I 4
The B mouths of balanced valve II 3 pass through the epicoele of oil circuit E6 connections executing agency hydraulic cylinder 8, the control port X connections of FD types balanced valve I 2
Oil circuit E6, the P mouths connection oil circuit E6 of safety overflow valve II 5, the T mouths connection oil return circuit T of safety overflow valve II 5.
Lead in FD types balanced valve I 2 and FD types balanced valve II 3 on the oil circuit H7 and oil circuit E6 of executing agency's hydraulic cylinder 8 and divide
Channel opening and closing device 9 is not installed.
During work, the right side magnetic valve b ends of proportional direction valve 1 obtain electric, the connection of P-A mouths, the T-B mouthfuls of connections of proportional direction valve 1,
The P-A mouths of hydraulic oil passing ratio direction valve 1 enter FD types balanced valve I 2, then enter executing agency's hydraulic pressure through FD types balanced valve I 2
The cavity of resorption of cylinder 8.The hydraulic oil of the epicoele of executing agency's hydraulic cylinder 8 is flowed back by FD types balanced valve II 3, and passes through proportional direction valve 1
T-B mouths flow back to oil return circuit T, now, the piston jack-up of executing agency's hydraulic cylinder 8.
When the left side magnetic valve a ends of proportional direction valve 1 obtain electric, the connection of P-B mouths, the T-A mouthfuls of connections of proportional direction valve 1 are high
The P-B mouths for pressing oil passing ratio direction valve 1 enter FD types balanced valve II 3, then enter executing agency's hydraulic pressure through FD types balanced valve II 3
The epicoele of cylinder 8.The hydraulic oil of the cavity of resorption of executing agency's hydraulic cylinder 8 is flowed back by FD types balanced valve I 2, and by proportional direction valve 1
T-A mouthfuls flow back to oil return circuit T, now, the piston landing of executing agency's hydraulic cylinder 8.
The Opening pressure of safety overflow valve I 4 and safety overflow valve II 5 is bigger than the operating pressure of executing agency hydraulic cylinder 8,
When coil downending machine stops, the chamber circuit pressure of hydraulic cylinder two can be limited, safeguard protection effect is played to system element.Consider load by
The conversion influence of coil of strip weight, through multiple Adjustment Tests, safety overflow valve I 4 and safety overflow valve II 5 set pressure as loop
Field requirement is disclosure satisfy that when 20%.Safety overflow valve I 4 and safety overflow valve II 5 in the utility model is using Direct Action Type DBD
Series.
The proportional direction valve 1 is the serial proportional direction valves of 4WRZ.Proportional direction valve 1 uses W type valve element functions, by changing
The size of current of no-load voltage ratio proportional direction valve electromagnet, it is possible to change the speed of service of hydraulic cylinder, makes loop possess the steady, nothing that commutates
The characteristics of impact, reliable operation.
Its valve element of FD types balanced valve that the utility model is used is sealed using cone structure, high with loop locking precision
Advantage, while FD types balanced valve I 2 and FD types balanced valve II 3 can control to hold according to the flow of the import of executing agency's hydraulic cylinder 8
The flow that row organization hydraulic pressure cylinder 8 is exported.Balanced valve is used in system circuit, it is ensured that when tilting gear load changes,
Balanced valve control-oil pressure accordingly changes, and the valve port of balanced valve is also continually changing, so as to realize that system speed is steadily controlled, it is to avoid
Load change, caused hydraulic cylinder speed out-of-control phenomenon.And balanced valve has break-resistance function in hydraulic circuit, if liquid
Cylinder pressure in-line is due to reasons such as pipe breaks, and the pressure for causing control balance valve core to open declines, balanced valve main valve plug
Close immediately, tilting gear is out of service.
Claims (2)
1. a kind of double steel machine hydraulic system, it is characterised in that including proportional direction valve, FD types balanced valve I, FD types balanced valve II,
Safety overflow valve I, safety overflow valve II, the P mouths connection high-pressure oil passage P of proportional direction valve, the T mouths connection oil return of proportional direction valve
Oil circuit T, the A mouths and the control port X of FD types balanced valve II of the A mouths connection FD types balanced valve I of proportional direction valve, proportional direction valve
B mouths connection FD types balanced valve II A mouths, the B mouths of FD types balanced valve I by the cavity of resorption of oil circuit H connections executing agency hydraulic cylinder,
The P mouths connection oil circuit H of safety overflow valve I, the B mouths of T mouths connection oil return circuit T, the FD type balanced valve II of safety overflow valve I pass through
The epicoele of oil circuit E connections executing agency hydraulic cylinder, control port X connections the oil circuit E, the P of safety overflow valve II of FD types balanced valve I
Mouth connection oil circuit E, the T mouths connection oil return circuit T of safety overflow valve II.
2. a kind of double steel machine hydraulic system according to claim 1, it is characterised in that the proportional direction valve is 4WRZ systems
Row proportional direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008015.1U CN206530562U (en) | 2017-01-05 | 2017-01-05 | A kind of double steel machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008015.1U CN206530562U (en) | 2017-01-05 | 2017-01-05 | A kind of double steel machine hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530562U true CN206530562U (en) | 2017-09-29 |
Family
ID=59917559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720008015.1U Active CN206530562U (en) | 2017-01-05 | 2017-01-05 | A kind of double steel machine hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555743A (en) * | 2018-12-11 | 2019-04-02 | 中联重科股份有限公司 | Control system and engineering machinery for oil cylinder |
-
2017
- 2017-01-05 CN CN201720008015.1U patent/CN206530562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555743A (en) * | 2018-12-11 | 2019-04-02 | 中联重科股份有限公司 | Control system and engineering machinery for oil cylinder |
| CN109555743B (en) * | 2018-12-11 | 2020-05-22 | 中联重科股份有限公司 | Control system for oil cylinder and engineering machinery |
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