CN204041574U - A kind of withdrawal straightening machine depress oil cylinder hydraulic control system - Google Patents
A kind of withdrawal straightening machine depress oil cylinder hydraulic control system Download PDFInfo
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- CN204041574U CN204041574U CN201420393342.XU CN201420393342U CN204041574U CN 204041574 U CN204041574 U CN 204041574U CN 201420393342 U CN201420393342 U CN 201420393342U CN 204041574 U CN204041574 U CN 204041574U
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- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 61
- 239000012530 fluid Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a kind of withdrawal straightening machine depress oil cylinder hydraulic control system, comprise the withdrawal straightening machine depress oil cylinder be connected successively, safety overflow valve, one-way throttle valve, Pilot operated check valve, 3-position 4-way electromagnetism (liquid) selector valve, reduction valve, two four-way electromagnetic reversing valves and pressure adjustment relief valve, the rodless cavity oil circuit of withdrawal straightening machine depress oil cylinder is provided with safety overflow valve and one-way throttle valve, the rod chamber oil circuit of withdrawal straightening machine depress oil cylinder is provided with one-way throttle valve and Pilot operated check valve, the filler opening of reduction valve communicates with high-pressure oil passage P, the oil outlet of reduction valve communicates with the filler opening of 3-position 4-way electromagnetism (liquid) selector valve, the drain tap of reduction valve communicates with the filler opening of two four-way electromagnetic reversing valves, the B oil outlet of two four-way electromagnetic reversing valves communicates with pressure adjustment relief valve.The beneficial effects of the utility model are: be provided with safety measure in oil hydraulic circuit, have ensured security of system; Real zero-pressure can be realized; During overhaul of the equipments, withdrawal straightening machine can be locked.
Description
Technical field
The utility model relates to caster technical field, particularly relates to a kind of withdrawal straightening machine depress oil cylinder hydraulic control system.
Background technique
Withdrawal straightening machine is one of visual plant of casting machine, and effect is pull-out strand and aligning strand, during lower dress dummy bar, utilizes the transfer roller of withdrawal straightening machine that dummy bar is sent into crystallizer; The following aspects is required to withdrawal straightening machine: (1) has enough throwing power and straightening force; (2) working pressure can switch (press cold base high pressure, press hot base low pressure); (3) larger speed adjustable range is had; (4) the cold base do not aligned is by (needing to realize zero-pressure and the switching of skidding pressure); And the hydraulic control system of withdrawal straightening machine depress oil cylinder conventional at present has the following disadvantages:
1, when normal throwing, if make the pressure increase of cylinder upper cavity oil due to base deformation, there is no safety measure in oil hydraulic circuit, easily cause accident.
2, when zero-pressure state, cold base pass through, the hydraulic oil of cylinder upper cavity oil can only be discharged by the pilot port of reduction valve, if desired flow-rate ratio comparatively large (deformation comparison of cold base is large), pilot port is not enough to the hydraulic oil of cylinder upper cavity oil to discharge, the pressure increase of cylinder upper cavity oil certainly will be made, real zero-pressure cannot be realized.
3, when overhaul of the equipments, the hydraulic oil of oil cylinder cavity of resorption is needed to support withdrawal straightening machine screw-down, comparatively large owing to letting out in directional control valve, withdrawal straightening machine cannot be locked.
Model utility content
The purpose of this utility model is to provide a kind of withdrawal straightening machine depress oil cylinder hydraulic control system, to overcome currently available technology above shortcomings.
The purpose of this utility model is achieved through the following technical solutions:
A kind of withdrawal straightening machine depress oil cylinder hydraulic control system, comprise the withdrawal straightening machine depress oil cylinder be connected successively, safety overflow valve, one-way throttle valve, Pilot operated check valve, 3-position 4-way electromagnetism (liquid) selector valve, reduction valve, two four-way electromagnetic reversing valves and pressure adjustment relief valve, the rodless cavity oil circuit of described withdrawal straightening machine depress oil cylinder is provided with safety overflow valve and one-way throttle valve, the rod chamber oil circuit of described withdrawal straightening machine depress oil cylinder is provided with one-way throttle valve and Pilot operated check valve, the filler opening of described reduction valve communicates with high-pressure oil passage P, the oil outlet of described reduction valve communicates with the filler opening of 3-position 4-way electromagnetism (liquid) selector valve, the drain tap of described reduction valve communicates with the filler opening of two four-way electromagnetic reversing valves, the B oil outlet of described two four-way electromagnetic reversing valves communicates with pressure adjustment relief valve.
Further, the rodless cavity oil circuit of described oil cylinder is connected with stop valve by flexible conduit.
Further, in the two cavity oil road of described oil cylinder, two ends, left and right are arranged with two pressure measuring tie-ins.
Further, the pressure tap of described reduction valve is connected with pressure gauge by pressure measurement flexible pipe.
The beneficial effects of the utility model are: be provided with safety measure in oil hydraulic circuit, have ensured security of system; Real zero-pressure can be realized; Withdrawal straightening machine can be locked, the convenient inspection and maintenance to equipment.
Accompanying drawing explanation
Below in order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of withdrawal straightening machine depress oil cylinder hydraulic control system described in the utility model embodiment;
Fig. 2 is the three position four-way directional control valve function schematic symbol diagram of a kind of withdrawal straightening machine depress oil cylinder hydraulic control system described in the utility model embodiment.
In figure:
1, two four-way electromagnetic reversing valves; 2, pressure adjustment relief valve; 3, three-position four-way electromagnetic directional valve; 4, one-way throttle valve; 5, safety overflow valve; 6, Pilot operated check valve; 7, reduction valve; 8, oil cylinder; 9, flexible conduit; 10, stop valve; 11, pressure measurement flexible pipe; 12, pressure gauge; 13, pressure measuring tie-in.
Embodiment
As shown in Figure 1, a kind of withdrawal straightening machine depress oil cylinder hydraulic control system described in the utility model embodiment, comprise the oil cylinder 8 be connected successively, safety overflow valve 5, one-way throttle valve 4, Pilot operated check valve 6, 3-position 4-way electromagnetism (liquid) selector valve 3, reduction valve 7, two four-way electromagnetic reversing valves 1, pressure adjustment relief valve 2, it is characterized in that: the rodless cavity oil circuit of described oil cylinder 8 is provided with safety overflow valve 5 and one-way throttle valve 4, the rod chamber oil circuit of described oil cylinder 8 is provided with one-way throttle valve 4 and Pilot operated check valve 6, the filler opening of described reduction valve 7 communicates with high-pressure oil passage P, the oil outlet of described reduction valve 7 communicates with the filler opening of 3-position 4-way electromagnetism (liquid) selector valve 3, the drain tap of described reduction valve 7 communicates with the filler opening of two four-way electromagnetic reversing valves 1, the B oil outlet of described two four-way electromagnetic reversing valves 1 communicates with pressure adjustment relief valve 2.
The rodless cavity oil circuit of described oil cylinder 8 is connected with stop valve 10 by flexible conduit 9, utilizes flexible conduit 9 to carry out connection and has the following advantages: the vibrations produced when (1) described flexible conduit 9 effectively can reduce equipment operation when connecting and when pipeline uses are to the destruction of pipe joint; (2) described flexible conduit 9 is convenient to maintenance; Described stop valve 10, when maintenance of equipment, effectively can end the fluid in pipeline, avoids fluid overflow in long pipe runs incessantly to cause waste and environmental pollution, is convenient to device maintenance.
In described epicoele oil hydraulic circuit, two ends, left and right are arranged with two pressure measuring tie-ins 13, can be recorded the pressure of regulation relief valve 5 by described pressure measurement structure 13, and the pressure being convenient to system regulates.
One end of described safety overflow valve 5 connects one-way throttle valve 4, the other end of described safety overflow valve 5 is connected on described oil return circuit, described one-way throttle valve 4 controls the flow direction of fluid by change throttling cross section or chock length, can according to the amount of restriction of actual conditions regulating system and throttling speed, the system of ensure that can normal operation at different conditions.
The pressure tap of described reduction valve 7 is connected with pressure gauge 12 by pressure measurement flexible pipe 11, and described pressure gauge 12 can the post-decompression pressure of detection system at any time, the convenient monitoring to system.
As shown in Figure 1-2, for three-position four-way electromagnetic directional valve 3, the filler opening that described three-position four-way electromagnetic directional valve 3 is connected with system oil passage represents with alphabetical P, the return opening that described three-position four-way electromagnetic directional valve 3 is communicated with system oil return road represents with T, and the hydraulic fluid port that described three-position four-way electromagnetic directional valve 3 is connected with executive component represents with A, B etc.; Be provided with spool-type valves spool in described three-position four-way electromagnetic directional valve 3, when spool-type valves mediate or home position time, described three-position four-way electromagnetic directional valve 3 is called the slide valve function of selector valve with the mode of communicating of each hydraulic fluid port; The slide valve function of described three-position four-way electromagnetic directional valve 3 has a variety of, and wherein " Y " type Median Function represents that P mouth is closed, and A, B, T mouth communicates, and when after the power-off of described three-position four-way electromagnetic directional valve 3, spool gets back to meta.
During concrete use, when described three-position four-way electromagnetic directional valve 3 is in right position, now hydraulic medium enters the epicoele of withdrawal straightening machine depress oil cylinder 8 successively by reduction valve 7, three-position four-way electromagnetic directional valve 3, Pilot operated check valve 6 and one-way throttle valve 4, now the piston rod of described oil cylinder 8 stretches out, and the hydraulic medium of described oil cylinder 8 cavity of resorption is back to return line by three-position four-way electromagnetic directional valve 3, Pilot operated check valve 6 and one-way throttle valve 4 successively; When three-position four-way electromagnetic directional valve 3 is in left position, hydraulic medium enters the cavity of resorption of withdrawal straightening machine depress oil cylinder 8 by reduction valve 7, three-position four-way electromagnetic directional valve 3, Pilot operated check valve 6 and one-way throttle valve 4, now the piston rod of described oil cylinder 8 is retracted, and the hydraulic medium of the epicoele of oil cylinder 8 is back to return line by three-position four-way electromagnetic directional valve 3 and one-way throttle valve 4; When three-position four-way electromagnetic directional valve 3 is in meta, now withdrawal straightening machine is in zero-pressure state or lock state.
Two four-way electromagnetic reversing valves 1 and pressure adjustment relief valve 2 is in series with at the control mouth of described reduction valve 7, when the left end of two four-way electromagnetic reversing valves 1 obtains electric, P end is communicated with B end, then by the effect of pressure adjustment relief valve 2, regulate the high-pressure of oil circuit, now can be used to de-buttocks, the operation of pressing dummy bar, pressing the operations such as cold base; When the right-hand member of two four-way electromagnetic reversing valves 1 obtains electric, P end is communicated with A end, now by the effect of reduction valve 7, regulates the low pressure of oil circuit, now can be used for the operation to operations such as the red bases of pressure.
Be provided with safety overflow valve 5 in the epicoele oil hydraulic circuit of described oil cylinder 8, by regulating the pressure adjusting screw on safety overflow valve 5 valve body, set the safety pressure of oil circuit, described force value measures by the pressure-measuring point MA pressure gauge 12 in outlet port; When normal throwing, if make the pressure increase of the epicoele of oil cylinder 8 due to base deformation, when pressure exceedes the setting pressure of safety overflow valve 5, unnecessary fluid can through safety overflow valve 5 overflow, to ensure the safety of hydraulic system; Now the cavity of resorption of described oil cylinder 8 can carry out repairing by Pilot operated check valve 6.
When using the three-position four-way electromagnetic directional valve 3 of Y type Median Function, when needing zero-pressure, three-position four-way electromagnetic directional valve 3 is switched to meta, now the two ends electromagnet of described three-position four-way electromagnetic directional valve 3 is all in off-position, the described epicoele of oil cylinder 8 is connected with the oil return of system, thus makes system realize zero-pressure state; The demand that when now the flow of described three-position four-way electromagnetic directional valve 3 also can meet zero-pressure, the epicoele hydraulic oil of oil cylinder 8 is discharged; Now the cavity of resorption of described oil cylinder 8 can carry out repairing by Pilot operated check valve 6.
Pilot operated check valve 6 is provided with in the cavity of resorption oil hydraulic circuit of described oil cylinder 8, when three-position four-way electromagnetic directional valve 3 is in meta, described Pilot operated check valve 6 is closed, now the hydraulic medium of the cavity of resorption of the depress oil cylinder 8 of withdrawal straightening machine is sealed, withdrawal straightening machine screw-down cannot decline because of gravity, the demand of withdrawal straightening machine locking when meeting overhaul of the equipments; By above-mentioned principle, hydraulic system can be realized to the driving of withdrawal straightening machine depress oil cylinder and control, make withdrawal straightening machine have the function of safety protection, zero-pressure state, mechanism's locking.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technological scheme, all drops within protection domain of the present utility model.
Claims (4)
1. a withdrawal straightening machine depress oil cylinder hydraulic control system, comprise the oil cylinder (8) be connected successively, safety overflow valve (5), one-way throttle valve (4), Pilot operated check valve (6), 3-position 4-way electromagnetism (liquid) selector valve (3), reduction valve (7), two four-way electromagnetic reversing valves (1) and pressure adjustment relief valve (2), it is characterized in that: the rodless cavity oil circuit of described oil cylinder (8) is provided with safety overflow valve (5) and one-way throttle valve (4), the rod chamber oil circuit of described oil cylinder (8) is provided with one-way throttle valve (4) and Pilot operated check valve (6), the filler opening of described reduction valve (7) communicates with high-pressure oil passage P, the oil outlet of described reduction valve (7) communicates with the filler opening of 3-position 4-way electromagnetism (liquid) selector valve (3), the drain tap of described reduction valve (7) communicates with the filler opening of two four-way electromagnetic reversing valves (1), the B oil outlet of described two four-way electromagnetic reversing valves (1) communicates with pressure adjustment relief valve (2).
2. a kind of withdrawal straightening machine depress oil cylinder hydraulic control system according to claim 1, is characterized in that: the rodless cavity oil circuit of described oil cylinder (8) is connected with stop valve (10) by flexible conduit (9).
3. a kind of withdrawal straightening machine depress oil cylinder hydraulic control system according to claim 2, is characterized in that: in the two cavity oil road of described oil cylinder (8), two ends, left and right are arranged with two pressure measuring tie-ins (13).
4. a kind of withdrawal straightening machine depress oil cylinder hydraulic control system according to claim 3, is characterized in that: the pressure tap of described reduction valve (7) is connected with pressure gauge (12) by pressure measurement flexible pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393342.XU CN204041574U (en) | 2014-07-16 | 2014-07-16 | A kind of withdrawal straightening machine depress oil cylinder hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393342.XU CN204041574U (en) | 2014-07-16 | 2014-07-16 | A kind of withdrawal straightening machine depress oil cylinder hydraulic control system |
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| CN204041574U true CN204041574U (en) | 2014-12-24 |
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|---|---|---|---|
| CN201420393342.XU Expired - Fee Related CN204041574U (en) | 2014-07-16 | 2014-07-16 | A kind of withdrawal straightening machine depress oil cylinder hydraulic control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218259A (en) * | 2017-06-30 | 2017-09-29 | 天津市中重科技工程有限公司 | A kind of Novel connecting shaft bracket hydraulic control system |
| CN108019387A (en) * | 2017-12-01 | 2018-05-11 | 三重型装备有限公司 | One kind control oil circuit, spooling system and development machine |
| CN110030222A (en) * | 2019-05-16 | 2019-07-19 | 中冶赛迪工程技术股份有限公司 | Its hydraulic system of a kind of differential hydraulic control loop of fluid control valve and application |
| CN110821908A (en) * | 2019-11-07 | 2020-02-21 | 杭州发达齿轮箱集团有限公司 | Marine gearbox reversing valve capable of being connected and arranged quickly and control method thereof |
| CN113864276A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Hydraulic speed regulation control system and hydraulic machine |
| CN115972664A (en) * | 2022-12-19 | 2023-04-18 | 山东泰丰智能控制股份有限公司 | Angle modulation device control system |
-
2014
- 2014-07-16 CN CN201420393342.XU patent/CN204041574U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218259A (en) * | 2017-06-30 | 2017-09-29 | 天津市中重科技工程有限公司 | A kind of Novel connecting shaft bracket hydraulic control system |
| CN107218259B (en) * | 2017-06-30 | 2019-05-10 | 天津市中重科技工程有限公司 | A kind of Novel connecting shaft bracket hydraulic control system |
| CN108019387A (en) * | 2017-12-01 | 2018-05-11 | 三重型装备有限公司 | One kind control oil circuit, spooling system and development machine |
| CN110030222A (en) * | 2019-05-16 | 2019-07-19 | 中冶赛迪工程技术股份有限公司 | Its hydraulic system of a kind of differential hydraulic control loop of fluid control valve and application |
| CN110030222B (en) * | 2019-05-16 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Differential hydraulic control loop of hydraulic control gate valve and hydraulic system using same |
| CN110821908A (en) * | 2019-11-07 | 2020-02-21 | 杭州发达齿轮箱集团有限公司 | Marine gearbox reversing valve capable of being connected and arranged quickly and control method thereof |
| CN110821908B (en) * | 2019-11-07 | 2024-05-03 | 杭州发达齿轮箱集团有限公司 | Marine gearbox reversing valve capable of being connected and discharged quickly and control method thereof |
| CN113864276A (en) * | 2021-10-18 | 2021-12-31 | 山东泰丰智能控制股份有限公司 | Hydraulic speed regulation control system and hydraulic machine |
| CN115972664A (en) * | 2022-12-19 | 2023-04-18 | 山东泰丰智能控制股份有限公司 | Angle modulation device control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |