CN103032409A - Flexible buffer device for dredger harrow pipe - Google Patents
Flexible buffer device for dredger harrow pipe Download PDFInfo
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- CN103032409A CN103032409A CN2012105795843A CN201210579584A CN103032409A CN 103032409 A CN103032409 A CN 103032409A CN 2012105795843 A CN2012105795843 A CN 2012105795843A CN 201210579584 A CN201210579584 A CN 201210579584A CN 103032409 A CN103032409 A CN 103032409A
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Abstract
The invention relates to a flexible buffer device for a dredger harrow pipe. The flexible buffer device comprises a pressure reducing valve, a high pressure ball valve, an energy accumulator, an oil cylinder, a hydraulic control one-way valve, a magnetic exchange valve for controlling the opening and closing of the hydraulic control one-way valve, and a detecting unit for sensing the position of buffered objects, wherein the hydraulic control one-way valve is connected with the energy accumulator, the oil cylinder and the magnetic exchange valve; the hydraulic control one-way valve pilot controls the oil liquid to connect with an oil port of pressure oil P or an oik port of return oil T; and the detecting unit is electrically connected with the magnetic exchange valve. Through the device, the problems that the energy accumulator of the existing buffer device cannot be directly connected with the oil cylinder, the outflow of the oil liquid from the energy accumulator cannot be controlled, and the extension of the oil cylinder cannot be actively controlled are solved.
Description
Technical field
The present invention relates to hydraulic transmission technology, automatic control technology, specifically be used for the soft damping device of dredger rake pipe.
Background technique
Because the development of current shipbuilding industry, dredger digs more and more deeplyer, so the weight of rake pipe is also more and more heavier.The rake pipe hangs with three hoister winchs usually, and when folding and unfolding was moved, the rake pipe unavoidably can produce and rock.Because the weight of rake pipe self is very large, the horizontal impact that the rake pipe produces is also very large.Harrowing pipe is key equipment to dredger, in order better to protect the rake pipe, avoids harrowing pipe and clashes into ship side, needs to adopt damping device absorption rake to manage horizontal hunting and adopt living impact.
Existing damping device is to adopt accumulator and oil cylinder directly to connect, first on demand to the accumulator nitrogen of substituting the bad for the good, input hydraulic pressure fluid on demand in oil cylinder and the pipeline, when being cushioned thing relief means baffle plate, baffle plate drives oil cylinder and regains, fluid is absorbed by accumulator, and system oil pressure rises.After being cushioned the minimizing of thing kinetic energy, cylinder thrust is larger than the horizontal component that is cushioned deposits yields, and the fluid in the accumulator enters oil cylinder at this moment, makes oil cylinder drive baffle plate and stretches out, and gives to be cushioned deboost of thing.Like this, oil cylinder produces thrust will be cushioned the object release, be cushioned the again above action of impact baffle plate repetition of object, until impact the more and more less balance that reaches.
Summary of the invention
The purpose of this invention is to provide a kind of soft damping device for dredger rake pipe, be intended to solve between the accumulator of existing damping device and the oil cylinder and directly connect, can't from accumulator, flow out fluid and control, thus oil cylinder stretch out the problem that can't initiatively control.
Purpose of the present invention is achieved through the following technical solutions: the soft damping device that is used for dredger rake pipe, comprise reduction valve, high-pressure ball valve, accumulator and oil cylinder, also comprise Pilot operated check valve, be used for the solenoid directional control valve of control Pilot operated check valve switching and be used for the detection unit that induction is cushioned object location; Pilot operated check valve connects with accumulator, oil cylinder and solenoid directional control valve respectively, Pilot operated check valve pilot control fluid cut-in pressure oil P hydraulic fluid port or oil return T hydraulic fluid port; Detection unit is electrically connected with solenoid directional control valve.
Preferably, described detection unit is approach switch.
Preferably, described solenoid directional control valve is arranged between reduction valve and the high-pressure ball valve.
Principle of the present invention is as follows: during work, use accumulator to absorb the energy of foreign impacts, control automatically reseting of oil cylinder by approach switch perception foreign impacts object.More specifically be: during work, foreign impacts absorbed accumulator after, keep not counter pushing away forward of cushioning fender, directly foreign impacts is absorbed fully, produce the weight that impacts and settle out thereby can allow in a short period of time.And, when the foreign impacts weight is removed more at a distance, do not return within a certain period of time, illustrate that weight is removed, rather than because wirerope when hanging the swing that weight produces, cushioning fender can automatically restore to initial position again.
The present invention has following advantage and effect with respect to prior art:
1, adopt solenoid directional control valve control Pilot operated check valve to open and close.By the solenoid directional control valve commutation, Pilot operated check valve pilot control fluid cut-in pressure oil P hydraulic fluid port or oil return T hydraulic fluid port, when connecting the P hydraulic fluid port, the Pilot operated check valve reverse-conducting; When connecting the T hydraulic fluid port, Pilot operated check valve is oppositely closed.
2, adopt Pilot operated check valve control accumulator inner fluid turnover oil cylinder.When Pilot operated check valve was oppositely closed, the fluid in the accumulator can not enter oil cylinder, and it is motionless that oil cylinder can keep, and did not have reverse impact power to produce.During the Pilot operated check valve reverse-conducting, the fluid in the accumulator can enter oil cylinder, and oil cylinder can stretch out.
3, be cushioned the position of thing by the approach switch induction, control the electromagnetic switch valve events with this and control Pilot operated check valve, finally control the action of oil cylinder.Judge that by approach switch induction time-delay being cushioned thing belongs to and normally remove or the short time impacts and swings, and prevents the damping device misoperation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, soft damping device comprises reduction valve 1, solenoid directional control valve 2, high-pressure ball valve 3, Pilot operated check valve 4, accumulator 5, oil cylinder 6 and approach switch 7 implemented according to the invention; Solenoid directional control valve 2 is arranged between reduction valve 1 and the high-pressure ball valve 3, is used for control Pilot operated check valve 4 and opens and closes; Pilot operated check valve 4 connects with high-pressure ball valve 3, accumulator 5, oil cylinder 6 and solenoid directional control valve 2 respectively, Pilot operated check valve pilot control fluid cut-in pressure oil P hydraulic fluid port or oil return T hydraulic fluid port, and when connecting the P hydraulic fluid port, the Pilot operated check valve reverse-conducting; When connecting the T hydraulic fluid port, Pilot operated check valve is oppositely closed; Approach switch 7 is electrically connected with solenoid directional control valve 2, is used for the position that induction is cushioned thing.
The present invention adopts Pilot operated check valve control accumulator inner fluid turnover oil cylinder, is cushioned the position of thing by the approach switch induction, controls Pilot operated check valve with this controlling party to valve events, finally controls the action of oil cylinder.
In the action of giving implementation process, when having, the external world impacts when coming, and external force promotes baffle plate and drives oil cylinder 6 and regain, and fluid is absorbed by accumulator 5, and system oil pressure rises until be cushioned thing and stop.Fluid after being cushioned thing and stopping in the accumulator 5 is sealed by Pilot operated check valve 4, and oil cylinder 6 is in retracted state.Be cushioned thing this moment in approach switch 7 distance of reaction, and solenoid directional control valve 2 does not move.After being cushioned thing and removing, approach switch 7 is not sensed object in set time, approach switch 7 signal enabling solenoid directional control valves 2 actions this moment, P mouth pressure fluid enters Pilot operated check valve 4 control ports, Pilot operated check valve 4 is opened, pressure oil liquid enters oil cylinder 6 in the accumulator 5, and oil cylinder 6 stretches out, and solenoid directional control valve 2 resets after the time-delay.Soft damping device recovers the initial position state.
Above-described embodiment is the better mode of execution of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (3)
1. the soft damping device that is used for dredger rake pipe, comprise reduction valve, high-pressure ball valve, accumulator and oil cylinder, it is characterized in that, also comprise Pilot operated check valve, be used for the solenoid directional control valve of control Pilot operated check valve switching and be used for the detection unit that induction is cushioned object location; Pilot operated check valve connects with accumulator, oil cylinder and solenoid directional control valve respectively, Pilot operated check valve pilot control fluid cut-in pressure oil P hydraulic fluid port or oil return T hydraulic fluid port; Detection unit is electrically connected with solenoid directional control valve.
2. soft damping device according to claim 1 is characterized in that, described detection unit is approach switch.
3. soft damping device according to claim 1 is characterized in that, described solenoid directional control valve is arranged between reduction valve and the high-pressure ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579584.3A CN103032409B (en) | 2012-12-27 | 2012-12-27 | Flexible buffer device for dredger harrow pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579584.3A CN103032409B (en) | 2012-12-27 | 2012-12-27 | Flexible buffer device for dredger harrow pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032409A true CN103032409A (en) | 2013-04-10 |
| CN103032409B CN103032409B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210579584.3A Active CN103032409B (en) | 2012-12-27 | 2012-12-27 | Flexible buffer device for dredger harrow pipe |
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| CN (1) | CN103032409B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952693A (en) * | 2016-06-28 | 2016-09-21 | 安徽东海机床制造有限公司 | Bending machine capable of operating efficiently and stably and hydraulic system thereof |
| CN108105321A (en) * | 2018-01-31 | 2018-06-01 | 中国重型机械研究院股份公司 | A kind of buffering resetting-mechanism and its application method for middle-size and small-size stretching-machine |
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| CN2576797Y (en) * | 2002-10-23 | 2003-10-01 | 山东省泰安市装载机厂 | Impact-rammer boosted hydraulic device |
| CN1462346A (en) * | 2001-04-25 | 2003-12-17 | 精工电子有限公司 | Cushion cylinder device |
| CN2936702Y (en) * | 2006-08-16 | 2007-08-22 | 天津市天锻压力机有限公司 | Hydraulic control system for hydraulic machine buffer |
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| CN202114897U (en) * | 2011-06-17 | 2012-01-18 | 山东胜岳精密机械有限公司 | High-speed injection circuit with buffering function for hydraulic injection moulding machine |
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| CN1462346A (en) * | 2001-04-25 | 2003-12-17 | 精工电子有限公司 | Cushion cylinder device |
| CN2576797Y (en) * | 2002-10-23 | 2003-10-01 | 山东省泰安市装载机厂 | Impact-rammer boosted hydraulic device |
| CN2936702Y (en) * | 2006-08-16 | 2007-08-22 | 天津市天锻压力机有限公司 | Hydraulic control system for hydraulic machine buffer |
| US20110114209A1 (en) * | 2009-11-19 | 2011-05-19 | Teco S.R.L. | Fluid-Dynamic Circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952693A (en) * | 2016-06-28 | 2016-09-21 | 安徽东海机床制造有限公司 | Bending machine capable of operating efficiently and stably and hydraulic system thereof |
| CN108105321A (en) * | 2018-01-31 | 2018-06-01 | 中国重型机械研究院股份公司 | A kind of buffering resetting-mechanism and its application method for middle-size and small-size stretching-machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103032409B (en) | 2015-04-15 |
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