CN104976175A - Uncoiling arm swinging hydraulic loop for hot coil box - Google Patents
Uncoiling arm swinging hydraulic loop for hot coil box Download PDFInfo
- Publication number
- CN104976175A CN104976175A CN201510423226.7A CN201510423226A CN104976175A CN 104976175 A CN104976175 A CN 104976175A CN 201510423226 A CN201510423226 A CN 201510423226A CN 104976175 A CN104976175 A CN 104976175A
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- CN
- China
- Prior art keywords
- valve
- oil
- uncoiling arm
- uncoiling
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/16—Unwinding or uncoiling
- B21C47/18—Unwinding or uncoiling from reels or drums
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- 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
- F15B13/16—Special measures for feedback, e.g. by a follow-up device
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to an uncoiling arm swinging hydraulic loop for a hot coil box. The uncoiling arm swinging hydraulic loop for the hot coil box comprises a pressure reducing valve, a reversing valve, a first one-way valve, a throttling valve, an overflow valve, a second one-way valve, a pressure sensor and an uncoiling arm swinging hydraulic cylinder. The output end of the pressure reducing valve is communicated with an oil inlet of the reversing valve. Two oil outlets of the reversing valve are connected with an inlet of the first one-way valve. An outlet of the first one-way valve is connected with an inlet of the throttling valve. Two oil outlets of the throttling valve are communicated with a rodless cavity and a rod cavity of the uncoiling arm swinging hydraulic cylinder respectively. The pressure sensor is arranged on one side of the rodless cylinder of the uncoiling arm swinging hydraulic cylinder. The overflow valve is connected to an oil circuit between an oil outlet of the first one-way throttling valve and the rodless cavity of the uncoiling arm swinging hydraulic cylinder in parallel. An oil inlet of the overflow valve is connected with the oil circuit. An oil outlet of the overflow valve is connected with an oil return circuit. An air inlet of the second one-way valve is connected with the oil return circuit. An oil outlet of the second one-way valve is connected with the oil circuit. The uncoiling arm swinging hydraulic loop for the hot coil box is simple and reliable in structure; the fault removal time during production is shortened, and later repair and maintenance are facilitated.
Description
Technical field
The invention belongs to metallurgical technology field, relate to a kind of themal winding box uncoiling arm swing oil hydraulic circuit.
Background technique
Themal winding box is mainly used in hot tandem, can improve the non-uniformity problem of finishing temperature difference and intermediate blank temperature end to end to a certain extent, thus improve the quality of products.Themal winding box is arranged between roughing mill and finishing mill, and the thickness shut out by roughing mill utilizes no-core winder mode wound into a roll in the intermediate blank of 20 ~ 40mm, and then oppositely uncoiling immediately, sends into finishing mill, realize limit uncoiling limit rolling.
Uncoiling arm is one of critical component of themal winding box, and controlling uncoiling arm well can for stablizing the guarantee that smooth uncoiling provides strong.The swing of uncoiling arm mainly controls by an oil hydraulic cylinder and linkage mechanism.After the coiling process of themal winding box completes, themal winding box enters uncoiling process, oscillating motor controls uncoiling arm and is in writing that surpasses all the others state, now uncoiling arm is defeated on intermediate blank hot rolling with the uncoiling of setting, and be close to intermediate blank hot rolling outer radial lower slider, make uncoiling arm insert the head of intermediate blank hot rolling, and intermediate blank hot rolling head is pressed on roller-way completes uncoiling.
In above-mentioned uncoiling process, uncoiling power should set rationally, and uncoiling power too conference causes intermediate blank hot rolling to move or uncoiling difficulty, the too little meeting of uncoiling power causes intermediate blank hot rolling to take the lead can not be pressed on roller-way, strip steel head nose, can not enter pinch roller, causes uncoiling failure.According to initial conditions such as different steel grades, workpiece thickness and temperature, the uncoiling power needed for uncoiling arm is not identical yet.The uncoiling power of uncoiling arm is controlled by uncoiling arm swing oil hydraulic cylinder, according to the different initial conditions of intermediate blank hot rolling, requires that the pressure of uncoiling arm swing oil hydraulic cylinder rodless cavity can regulate automatically.
Original a kind of themal winding box uncoiling arm swing oil hydraulic circuit as shown in Figure 1.Original hydraulic control circuit is complicated, increases the Design and manufacture cost of hydraulic valve block, simultaneously the increase of hydraulic element, also increases the malfunction elimination time in production process, and the inspection and maintenance cost of equipment.Pressure transducer reflects the pressure of uncoiling arm swing oil hydraulic cylinder rodless cavity indirectly, and Stress control is inaccurate, easily causes themal winding box uncoiling failure, causes production accident.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of themal winding box uncoiling arm swing oil hydraulic circuit, this control loop is simple and reliable, and pressure controling precision is high, can increase themal winding box uncoiling success rate, enhance productivity.
For achieving the above object, the invention provides following technological scheme:
A kind of themal winding box uncoiling arm swing oil hydraulic circuit, comprises reduction valve 1, selector valve 2, first one-way valve 3, throttle valve 4, relief valve 5, second one-way valve 6, pressure transducer 7 and uncoiling arm swing oil hydraulic cylinder 8;
The output terminal of described reduction valve 1 is communicated with the filler opening of selector valve 2; Two oil outlets of selector valve 2 connect the import of the first one-way valve 3, and the outlet of the first one-way valve 3 connects throttle valve 4 import, and two oil outlets of throttle valve 4 lead to rodless cavity and the rod chamber of uncoiling arm swing oil hydraulic cylinder 8 respectively; Pressure transducer 7 is arranged on uncoiling arm swing oil hydraulic cylinder 8 rodless cavity side; Relief valve 5 in parallel on oil circuit between described first one-way throttle valve 4 oil outlet and described uncoiling arm swing oil hydraulic cylinder 8 rodless cavity, relief valve 5 filler opening connects above-mentioned oil circuit, and relief valve 5 oil outlet connects oil return circuit; On oil circuit between described second one-way throttle valve 4 oil outlet and described uncoiling arm swing oil hydraulic cylinder 8 rod chamber, one-way valve 6, second one-way valve 6 filler opening in parallel is connected with oil return circuit, and the second one-way valve 6 oil outlet connects above-mentioned oil circuit.
Further, described reduction valve 1 adopts threeway proportional pressure-reducing valve.
Further, described selector valve 2 adopts three position four-way directional control valve.
Further, described first one-way valve 3 is hyraulic controlled type one-way valve.
Beneficial effect of the present invention is:
1, oil hydraulic circuit of the present invention, pressure transducer is arranged on uncoiling arm swing oil hydraulic cylinder rodless cavity side, the force value of direct measurement oil hydraulic cylinder rodless cavity, the on-line control of passing ratio reduction valve, realizes the accurate control of uncoiling arm swing oil hydraulic cylinder rodless cavity pressure.
2, hydraulic loop structure of the present invention is simple, reliable, reduces the Design and manufacture using and simplify valve block oil circuit of hydraulic element, reduces the malfunction elimination time in production process, convenient inspection and maintenance in the future.
Accompanying drawing explanation
In order to make object of the present invention, technological scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is themal winding box uncoiling arm swing oil hydraulic circuit schematic diagram in prior art;
Fig. 2 is the schematic diagram of themal winding box uncoiling arm swing oil hydraulic circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 2 is the schematic diagram of themal winding box uncoiling arm swing oil hydraulic circuit of the present invention, as shown in the figure, themal winding box uncoiling arm swing oil hydraulic circuit provided by the invention comprises: reduction valve 1, selector valve 2, first one-way valve 3, throttle valve 4, relief valve 5, second one-way valve 6, pressure transducer 7 and uncoiling arm swing oil hydraulic cylinder 8.
Described reduction valve 1 output terminal is communicated with selector valve 2 filler opening.Two oil outlets of selector valve 2 connect the import of the first one-way valve 3, and the outlet of the first one-way valve 3 connects throttle valve 4 import, and two oil outlets of throttle valve 4 lead to rodless cavity and the rod chamber of uncoiling arm swing oil hydraulic cylinder 8 respectively.Pressure transducer 7 is arranged on uncoiling arm swing oil hydraulic cylinder 8 rodless cavity side.Relief valve 5 in parallel on oil circuit between described throttle valve 4 oil outlet and described uncoiling arm swing oil hydraulic cylinder 8 rodless cavity, relief valve 5 filler opening connects above-mentioned oil circuit, and relief valve 5 oil outlet connects oil return circuit.On oil circuit between described throttle valve 4 oil outlet and described uncoiling arm swing oil hydraulic cylinder 8 rod chamber, one-way valve 6, second one-way valve 6 filler opening in parallel is connected with oil return circuit, and the second one-way valve 6 oil outlet connects above-mentioned oil circuit.
Working principle of the present invention is: when uncoiling arm is accommodated (oscillating motor stretches out), and reduction valve 1 inputs a permanent opening degree by controller, and the oil inlet P of reduction valve 1 is communicated with reduction valve 1 actuator port A.The b electromagnet of selector valve 2 obtains electric, and selector valve 2 oil inlet P is communicated with selector valve 2 first actuator port A, and the second actuator port B of selector valve 2 is communicated with the oil return inlet T of selector valve 2.Pressure oil is by P pipeline, the rodless cavity of uncoiling arm swing oil hydraulic cylinder 8 is entered through reduction valve 1, selector valve 2, first one-way valve 3 and throttle valve 4, now, oil hydraulic cylinder rod chamber hydraulic oil gets back to pipeline T by throttle valve 4, first one-way valve 3 and selector valve 2, and uncoiling arm swing oil hydraulic cylinder 8 stretches out.Uncoiling arm swing oil hydraulic cylinder 8 rodless cavity pipeline has been arranged in parallel relief valve 5, and effect is when to be that oil hydraulic cylinder rodless cavity loine pressure is abnormal raise and exceed the setting value of relief valve 5, and the pressure oil in overflow passage, the pressure in guarantee pipeline is in the scope of safety.Uncoiling arm swing oil hydraulic cylinder 8 rod chamber pipeline has been arranged in parallel the second one-way valve 6, and effect is to the repairing of oil hydraulic cylinder rod chamber lateral line, prevents from inhaling sky.
When uncoiling arm is laid out (oscillating motor retraction), reduction valve 1 inputs a permanent opening degree by controller, and the oil inlet P of reduction valve 1 is communicated with reduction valve 1 actuator port A.The a electromagnet of selector valve 2 obtains electric, and selector valve 2 oil inlet P is communicated with selector valve 2 second actuator port B, and the first actuator port A of selector valve 2 is communicated with the oil return inlet T of selector valve 2.Pressure oil is by P pipeline, the rod chamber of uncoiling arm swing oil hydraulic cylinder 8 is entered through reduction valve 1, selector valve 2, first one-way valve 3 and throttle valve 4, now, oil hydraulic cylinder rodless cavity hydraulic oil gets back to pipeline T by throttle valve 4, first one-way valve 3 and selector valve 2, and uncoiling arm swing oil hydraulic cylinder 8 is retracted.
When the writing that surpasses all the others of uncoiling arm (oscillating motor stretches out), when uncoiling arm prepares writing that surpasses all the others, according to initial conditions such as different intermediate blank hot rolling steel grade, thickness and temperature, uncoiling arm swing oil hydraulic cylinder 8 rodless cavity need set an initial pressure, and initial pressure is set by reduction valve 1.Reduction valve 1 inputs the opening degree of SC sigmal control reduction valve 1 spool by controller, and the oil inlet P of reduction valve 1 is communicated with reduction valve 1 actuator port A, the initial pressure of the rodless cavity of setting uncoiling arm swing oil hydraulic cylinder 8.The b electromagnet of selector valve 2 obtains electric, selector valve 2 oil inlet P is communicated with selector valve 2 first actuator port A, second actuator port B of selector valve 2 is communicated with the oil return inlet T of selector valve 2, pressure oil is by P pipeline, the rodless cavity of uncoiling arm swing oil hydraulic cylinder 8 is entered through reduction valve 1, selector valve 2, first one-way valve 3 and throttle valve 4, now, oil hydraulic cylinder rod chamber hydraulic oil gets back to pipeline T by throttle valve 4, first one-way valve 3 and selector valve 2.Uncoiling arm swing oil hydraulic cylinder 8 rodless cavity pressure is set by the signal of controller by given reduction valve 1, and the actual value of rodless cavity pressure is detected by pressure transducer 7, the actual value that pressure transducer 7 detects feeds back in controller and compares with setting value, after comparison error signal is amplified, be re-used as the opening degree that input signal controls the spool of reduction valve 1, adopt pressure closed loop accurately to control the pressure of uncoiling arm swing oil hydraulic cylinder 8 rodless cavity.
What finally illustrate is, above preferred embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (4)
1. a themal winding box uncoiling arm swing oil hydraulic circuit, is characterized in that: comprise reduction valve (1), selector valve (2), the first one-way valve (3), throttle valve (4), relief valve (5), the second one-way valve (6), pressure transducer (7) and uncoiling arm swing oil hydraulic cylinder (8);
The output terminal of described reduction valve (1) is communicated with the filler opening of selector valve (2); Two oil outlets of selector valve (2) connect the import of the first one-way valve (3), the outlet of the first one-way valve (3) connects throttle valve (4) import, and two oil outlets of throttle valve (4) lead to rodless cavity and the rod chamber of uncoiling arm swing oil hydraulic cylinder (8) respectively; Pressure transducer (7) is arranged on uncoiling arm swing oil hydraulic cylinder (8) rodless cavity side; Relief valve in parallel (5) on oil circuit between described first one-way throttle valve (4) oil outlet and described uncoiling arm swing oil hydraulic cylinder (8) rodless cavity, relief valve (5) filler opening connects above-mentioned oil circuit, and relief valve (5) oil outlet connects oil return circuit; One-way valve in parallel (6) on oil circuit between described second one-way throttle valve (4) oil outlet and described uncoiling arm swing oil hydraulic cylinder (8) rod chamber, second one-way valve (6) filler opening is connected with oil return circuit, and the second one-way valve (6) oil outlet connects above-mentioned oil circuit.
2. a kind of themal winding box uncoiling arm swing oil hydraulic circuit according to claim 1, is characterized in that: described reduction valve (1) adopts threeway proportional pressure-reducing valve.
3. a kind of themal winding box uncoiling arm swing oil hydraulic circuit according to claim 1, is characterized in that: described selector valve (2) adopts three position four-way directional control valve.
4. a kind of themal winding box uncoiling arm swing oil hydraulic circuit according to claim 1, is characterized in that: described first one-way valve (3) is hyraulic controlled type one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423226.7A CN104976175B (en) | 2015-07-14 | 2015-07-14 | Coil Box uncoiling arm swing hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510423226.7A CN104976175B (en) | 2015-07-14 | 2015-07-14 | Coil Box uncoiling arm swing hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104976175A true CN104976175A (en) | 2015-10-14 |
| CN104976175B CN104976175B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510423226.7A Active CN104976175B (en) | 2015-07-14 | 2015-07-14 | Coil Box uncoiling arm swing hydraulic circuit |
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| Country | Link |
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| CN (1) | CN104976175B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424221A (en) * | 2016-12-19 | 2017-02-22 | 马钢(集团)控股有限公司 | Steel section straightener bottom pinch roller hydraulic drive system and controlling method thereof |
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3978769A (en) * | 1974-09-19 | 1976-09-07 | Caterpillar Tractor Co. | Bucket positioner kickout slave cylinder |
| AU4344699A (en) * | 1998-09-15 | 2000-03-23 | Caterpillar Inc. | Overrunning load control with an independent metering valve |
| CN2377023Y (en) * | 1999-02-14 | 2000-05-10 | 中国第二重型机械集团公司 | Heat coiling drum |
| CN101251131A (en) * | 2008-03-28 | 2008-08-27 | 枣庄天源气动液压制造有限公司 | Non shaft support hydraulic system |
| CN201176984Y (en) * | 2008-01-31 | 2009-01-07 | 广东海阳物资回收有限公司 | Reclaimed oil device |
| CN101936319A (en) * | 2010-08-26 | 2011-01-05 | 无锡市东舟船舶附件有限公司 | Main oil-passage no-pressure warning device of hydraulic system |
| CN204783917U (en) * | 2015-07-14 | 2015-11-18 | 中冶赛迪工程技术股份有限公司 | Heat is rolled up case and is opened a book arm swing hydraulic circuit |
-
2015
- 2015-07-14 CN CN201510423226.7A patent/CN104976175B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3978769A (en) * | 1974-09-19 | 1976-09-07 | Caterpillar Tractor Co. | Bucket positioner kickout slave cylinder |
| AU4344699A (en) * | 1998-09-15 | 2000-03-23 | Caterpillar Inc. | Overrunning load control with an independent metering valve |
| CN2377023Y (en) * | 1999-02-14 | 2000-05-10 | 中国第二重型机械集团公司 | Heat coiling drum |
| CN201176984Y (en) * | 2008-01-31 | 2009-01-07 | 广东海阳物资回收有限公司 | Reclaimed oil device |
| CN101251131A (en) * | 2008-03-28 | 2008-08-27 | 枣庄天源气动液压制造有限公司 | Non shaft support hydraulic system |
| CN101936319A (en) * | 2010-08-26 | 2011-01-05 | 无锡市东舟船舶附件有限公司 | Main oil-passage no-pressure warning device of hydraulic system |
| CN204783917U (en) * | 2015-07-14 | 2015-11-18 | 中冶赛迪工程技术股份有限公司 | Heat is rolled up case and is opened a book arm swing hydraulic circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424221A (en) * | 2016-12-19 | 2017-02-22 | 马钢(集团)控股有限公司 | Steel section straightener bottom pinch roller hydraulic drive system and controlling method thereof |
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104976175B (en) | 2017-01-04 |
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