CN202290768U - Full-hydraulic screwdown servo control apparatus - Google Patents
Full-hydraulic screwdown servo control apparatus Download PDFInfo
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- CN202290768U CN202290768U CN201120374787XU CN201120374787U CN202290768U CN 202290768 U CN202290768 U CN 202290768U CN 201120374787X U CN201120374787X U CN 201120374787XU CN 201120374787 U CN201120374787 U CN 201120374787U CN 202290768 U CN202290768 U CN 202290768U
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- oil cylinder
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- oil
- servo valve
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Abstract
The utility model discloses a full-hydraulic screwdown servo control apparatus, which comprises a long-stroke oil cylinder (24), a displacement sensor, a pressure sensor, a servo valve P (28), a servo valve P'(17) and an electromagnetic reversing valve (27). The displacement sensor and the pressure sensor are arranged on the long-stroke oil cylinder. The servo valve P (28) is connected between the long-stroke oil cylinder (24) and a hydraulic oil source P (5) through a pipeline. The servo valve P'(17) and the electromagnetic reversing valve (27) are connected between the long-stroke oil cylinder (24) and a hydraulic oil source P'(9) through a pipeline. The long-stroke full-hydraulic screwdown servo control apparatus provided by the utility model is simple in working principle and reasonable in design. When the large-stroke control required by a set is realized, the setting and adjustment of roll gaps can also be ensured to be small in inertia, quick in operation and high in sensitivity. Meanwhile, the rolling efficiency and the control precision are high and the failure rate is low. The yield of strips is improved and the quality of products is increased.
Description
Technical field
The utility model relates to the all-hydraulic Servocontrol device of depressing of iron and steel, non-ferrous metal processing industry process equipment, especially relates to a kind of all-hydraulic Servocontrol device of depressing of long stroke.
Background technology
Electronic depress add the extensive use, particularly steel plate steel mill in iron and steel, non-ferrous metal processing industry process equipment of short stroke oil cylinder screwdown gear, heavy and medium plate mill, aluminium sheet band hot-rolling mill etc. require the roll gap adjusting range big, depress fireballing situation.Presetting of roll shop building roll gap, electronic the depressing of big before this stroke, the fine setting of short stroke oil cylinder.As depicted in figs. 1 and 2, electronic depressing mainly is made up of motor, large-scale worm reduction gear, housing screw and screw box.Since when work require roll fast, big stroke, frequent adjustment, this just requires screwdown gear to adopt the little transmission system of inertia, so that frequent startup, braking, and higher transmission efficiency and functional reliability is arranged.In the prior art; The electric screw down gear structure is heavy, motion parts inertia is big; Thereby reaction is slow, control accuracy is low in the roll gap adjustment process, and equipment failure rate is high, can't satisfy the job requirement of the modernized strip-mill strip of the present high production rate that is developing, high product quality.
Summary of the invention
Be to solve the problem in the background technology, the utility model technical problem to be solved provides that a kind of inertia is little, action is fast, the all-hydraulic Servocontrol device of depressing of the long stroke that sensitivity and control accuracy are high.
For realizing the foregoing invention purpose, the utility model adopts following technical scheme:
A kind of all-hydraulic Servocontrol device of depressing; Comprise long stroke oil cylinder, be located at displacement transducer and pressure sensor on the said long stroke oil cylinder, be connected in the servo valve P between long stroke oil cylinder and the hydraulic oil source P and be connected in servo valve P ' and the solenoid directional control valve between long stroke oil cylinder and the hydraulic oil source P ' through pipeline.
Further, the outlet of said servo valve P is connected with the plunger shaft of long stroke oil cylinder with oil cylinder piston chamber oil pipe through oil path block, oil cylinder inlet shutoff valve, and the inlet of said servo valve P is connected with hydraulic oil source P.
Further, the outlet of said servo valve P ' is connected with the plunger shaft of long stroke oil cylinder with oil cylinder piston chamber oil pipe through hydraulic control one-way valve, oil path block, oil cylinder inlet shutoff valve, and the inlet of said servo valve P ' is connected with hydraulic oil source P '.
Further, the oil return opening of said servo valve P and servo valve P ' links to each other with fuel tank through pipeline.
Further, the leakage hole of the oil return opening of said solenoid directional control valve and hydraulic control one-way valve links to each other with fuel tank through pipeline.
Further, the plunger shaft of said long stroke oil cylinder is connected with the inlet of safety valve, and the outlet of said safety valve is connected through oil path block, pipeline and fuel tank.
The all-hydraulic Servocontrol device of depressing of the long stroke of the utility model, the acting as of its two servo valves: servo valve P ' uses when depressing fast for unit; Another servo valve P uses during as unit screwdown gear normal regulating.
The all-hydraulic Servocontrol device of depressing of the long stroke that the utility model provides, operation principle is simple, and is reasonable in design; Require at unit under the situation of big Stroke Control, can guarantee that still inertia is little, action is fast, highly sensitive intermesh determination, adjusting, rolling efficiency and control accuracy are high, and fault rate is low; Improve the yield rate of band, improved product quality.
Description of drawings
Fig. 1 is that prior electric is depressed and added short stroke oil cylinder hydraulic pressuring upper device structural representation;
Fig. 2 is existing short stroke oil cylinder hydraulic SERVO CONTROL hydraulic schematic diagram;
Fig. 3 is the all-hydraulic screwdown gear structural representation of the long stroke of the utility model;
Fig. 4 is the all-hydraulic SERVO CONTROL hydraulic schematic diagram of depressing of the long stroke of the utility model;
Among the figure: 1-safety valve oil return pipe O; 2-servo valve oil return pipe T; 3-valve platform drain pipeline L; The 4-stop valve; 5-hydraulic oil source P; 6-oil sources P stop valve; 7-oil sources P oil filter; 8-oil sources P check valve; 9-hydraulic oil source P '; 10-oil sources P ' stop valve; 11-oil sources P ' oil filter; 12-oil sources P ' check valve; The 13-oil path block; 14-oil sources P ' Pressure gauge; 15-oil sources P Pressure gauge; The 16-accumulator; 17-servo valve P '; The 18-hydraulic control one-way valve; 19-oil cylinder working-pressure table; 20-oil cylinder inlet shutoff valve; 21-cylinder rod chamber oil sources P "; 22-oil cylinder displacement transducer A; 23-oil cylinder working-pressure sensor; The long stroke oil cylinder of 24-; 25-oil cylinder displacement transducer B; 26-oil cylinder piston chamber oil pipe A; The 27-solenoid directional control valve; 28-servo valve P; The 29-safety valve; The 30-flow valve; The 31-screw box; The 32-housing screw; 33-presses oil cylinder.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
In conjunction with Fig. 4, hydraulic oil source P ' among the figure is together to form second oil supply loop through stop valve 10, filter 11, check valve 12, servo valve P ' 17, hydraulic control one-way valve 18, oil cylinder inlet shutoff valve 20, oil cylinder piston chamber oil pipe 26; Hydraulic oil source P is together to form first oil supply loop through stop valve 6, filter 7, check valve 8, servo valve P28, oil cylinder inlet shutoff valve 20, oil cylinder piston chamber oil pipe 26.First oil supply loop and second oil supply loop require to make up to the speed of long stroke oil cylinder 24 according to system and work simultaneously or work alone.
In conjunction with Fig. 3 and Fig. 4; Said servo valve P28 and servo valve P ' 17 transform 24 needed hydraulic coupling and the piston displacements of growth stroke oil cylinder according to external command with high-pressure low-flow hydraulic oil source P1 and low pressure and mass flow hydraulic oil source P2, realize the control of 24 pairs of hydraulic couplings of long stroke oil cylinder and piston displacement.
The difference of given signal and detection signal drives servo valve P ' 17 work; This moment, servo valve P28 can select the work of whether participating in to the speed that long stroke oil cylinder 24 stretches out according to system, and promptly when screwdown gear needed big stroke to stretch out fast downwards, servo valve P28 and servo valve P ' 17 worked simultaneously; Otherwise, only work when long stroke oil cylinder 24 stretches out at a slow speed of servo valve P28.
When system requires fast retractile to long stroke oil cylinder 24, servo valve P28 counteragent, oil cylinder piston chamber oil pipe 26, oil cylinder inlet shutoff valve 20, servo valve P28, servo valve oil return pipe T 2 form the first oil return loop at this moment; Solenoid directional control valve 27 is opened the second oil return loop, servo valve P ' 17 counteragents, and oil cylinder piston chamber oil pipe 26, oil cylinder inlet shutoff valve 20, servo valve P ' 17, servo valve oil return pipe T 2 form the second oil return loop at this moment; In addition, annexes such as Pressure gauge (14,15), accumulator 16, stop valve (4,20), safety valve 29, flow valve 30, sensor are the routine setting of hydraulic circuit, and the detailed description of its concrete function is in this omission.
Claims (6)
1. all-hydraulic Servocontrol device of depressing; It is characterized in that: comprise long stroke oil cylinder (24), be located at displacement transducer and pressure sensor on the said long stroke oil cylinder, through pipeline be connected in the servo valve P (28) between long stroke oil cylinder (24) and the hydraulic oil source P (5) and be connected in long stroke oil cylinder (24) and hydraulic oil source P ' (9) between servo valve P ' (17) and solenoid directional control valve (27).
2. the all-hydraulic Servocontrol device of depressing according to claim 1; It is characterized in that: the outlet of said servo valve P (28) is connected with the plunger shaft of oil cylinder piston chamber oil pipe (26) with long stroke oil cylinder (24) through oil path block (13), oil cylinder inlet shutoff valve (20), and the inlet of said servo valve P (28) is connected with hydraulic oil source P (5).
3. the all-hydraulic Servocontrol device of depressing according to claim 1; It is characterized in that: the outlet of said servo valve P ' (17) is connected with the plunger shaft of oil cylinder piston chamber oil pipe (26) with long stroke oil cylinder (24) through hydraulic control one-way valve (18), oil path block (13), oil cylinder inlet shutoff valve (20), and the inlet of said servo valve P ' (17) is connected with hydraulic oil source P ' (9).
4. the all-hydraulic Servocontrol device of depressing according to claim 1 is characterized in that: said servo valve P (28) links to each other with fuel tank through pipeline with the oil return opening of servo valve P ' (17).
5. according to claim 1 or the 3 described all-hydraulic Servocontrol devices of depressing, it is characterized in that: the oil return opening of said solenoid directional control valve (27) links to each other with fuel tank through pipeline with the leakage hole of hydraulic control one-way valve (18).
6. the all-hydraulic Servocontrol device of depressing according to claim 1 is characterized in that: the plunger shaft of said long stroke oil cylinder (24) is connected with the inlet of safety valve (29), and the outlet of said safety valve (29) is connected with fuel tank through oil path block (13), pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120374787XU CN202290768U (en) | 2011-10-01 | 2011-10-01 | Full-hydraulic screwdown servo control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120374787XU CN202290768U (en) | 2011-10-01 | 2011-10-01 | Full-hydraulic screwdown servo control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290768U true CN202290768U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120374787XU Expired - Lifetime CN202290768U (en) | 2011-10-01 | 2011-10-01 | Full-hydraulic screwdown servo control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290768U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008362A (en) * | 2012-11-27 | 2013-04-03 | 中色科技股份有限公司 | Hydraulic press-down parallel servo control method and loop for plate and strip rolling mill |
| CN106180213A (en) * | 2014-08-19 | 2016-12-07 | 株式会社日立制作所 | Hydraulic pressing controls device and method of adjustment thereof and control program |
| CN110242635A (en) * | 2019-07-19 | 2019-09-17 | 湖北万测试验设备有限公司 | A kind of oil cylinder minute movement control system |
| CN112096670A (en) * | 2020-09-21 | 2020-12-18 | 广东海德利森一氢科技有限公司 | Hydraulic system and hydraulic pressure control method |
| CN113617855A (en) * | 2021-07-16 | 2021-11-09 | 太原科技大学 | Rolling mill control method and system |
-
2011
- 2011-10-01 CN CN201120374787XU patent/CN202290768U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008362A (en) * | 2012-11-27 | 2013-04-03 | 中色科技股份有限公司 | Hydraulic press-down parallel servo control method and loop for plate and strip rolling mill |
| CN106180213A (en) * | 2014-08-19 | 2016-12-07 | 株式会社日立制作所 | Hydraulic pressing controls device and method of adjustment thereof and control program |
| CN110242635A (en) * | 2019-07-19 | 2019-09-17 | 湖北万测试验设备有限公司 | A kind of oil cylinder minute movement control system |
| CN110242635B (en) * | 2019-07-19 | 2024-05-24 | 湖北万测试验设备有限公司 | Micro-movement control system for oil cylinder |
| CN112096670A (en) * | 2020-09-21 | 2020-12-18 | 广东海德利森一氢科技有限公司 | Hydraulic system and hydraulic pressure control method |
| CN113617855A (en) * | 2021-07-16 | 2021-11-09 | 太原科技大学 | Rolling mill control method and system |
| CN113617855B (en) * | 2021-07-16 | 2023-02-17 | 太原科技大学 | Rolling mill control method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |