CN103671311A - Motor energy saving system of open type hydraulic system - Google Patents
Motor energy saving system of open type hydraulic system Download PDFInfo
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- CN103671311A CN103671311A CN201310593602.8A CN201310593602A CN103671311A CN 103671311 A CN103671311 A CN 103671311A CN 201310593602 A CN201310593602 A CN 201310593602A CN 103671311 A CN103671311 A CN 103671311A
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Abstract
A motor energy saving system of an open type hydraulic system comprises a high pressure oil circuit, an oil return passage and a motor which is communicated with the high pressure oil circuit and the oil return passage. An oil make-up passage is arranged on the oil return passage to be communicated with a pressure oil tank, a controller is arranged on the oil return passage, and the controller controls the oil make-up passage to be opened or closed through the high pressure oil circuit. According to the motor energy saving system of the open type hydraulic system, a turning-on opening of a hydraulic control one-way valve is formed in a pressure oil opening end, so that the pressure oil opening end controls the hydraulic control one-way valve to be turned on, the oil make-up passage and the oil return passage of the motor are made to be communicated, and the purposes of lowering oil return resistance and saving energy are achieved.
Description
Technical field
The present invention relates to a kind of open type hydraulic system motor energy conserving system.
Background technique
Oil hydraulic motor is the hydraulic actuator that produces continuous rotation motion, and it is mechanical energy the hydraulic energy transfer of input, makes main frame overcome load and resistance generation motion.It forms the motor control method of existing open type hydraulic system as shown in Figure 1, comprise: hydraulic oil container 1, hydraulic oil source 2, commutation main valve 3, forward repairing one-way valve 41, reversion repairing one-way valve 42, forward overload relief valve 51, reversion overload relief valve 52, oil hydraulic motor 6, the logical oil of controlling of pilot control opening a of commutation main valve 3, the left position access of commutation main valve 3.Oil hydraulic pump 2 outlet pressures oil are by commutation main valve 3 to motor forward oil inlet passage A, and system oil return is by the motor oil inlet passage B that reverse, and through commutating, main valve 3 flows back to fuel tank 1.The control principle of reversion is the same with forward, is into, oil return opposite direction. Overload relief valve 51 and 52 can limit the working pressure of motor 6, when hydraulic oil source is for shortage of oil or hydraulic oil source fuel cut-off and motor 6 while continuing rotation due to inertia, fuel tank fluid can carry out repairing to working oil path through repairing one- way valve 41 and 42, effectively prevents that motor from producing suction sky.
The hydraulic power loss of hydraulic motor transmission control system be mainly from hydraulic oil source to motor, motor is to the oil circuit pressure loss of fuel tank and the loss in efficiency of motor self.If can reduce motor, to the pressure loss of tank oiling channel oil or the efficiency that improves motor self, just can reach energy-conservation object.And reducing in the oil circuit pressure loss, current method is to strengthen as much as possible return line latus rectum, this kind of method can only partly reduce oil return loses along stroke pressure, and can not avoid the local pressure loss that causes through commutation main valve 3 and oil connection place in oil return.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and provide motor in a kind of effective reduction open type hydraulic system to tank drainback power loss, reach the open type hydraulic system motor energy conserving system of energy-conservation object.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of open type hydraulic system motor energy conserving system, the motor that comprises high-pressure oil passage, way to cycle oil and connection high-pressure oil passage and way to cycle oil, described way to cycle oil is provided with repairing path and is communicated with pressure oil tank, described repairing path is provided with controller, and described controller is controlled the unlatching of described repairing path by described high-pressure oil passage.
Described high-pressure oil passage is connected with hydraulic oil source, described way to cycle oil is connected with hydraulic oil container, the outlet pressure oil of described hydraulic oil source is connected with the high-pressure oil passage of motor by described commutation main valve, the oil return of described motor is flowed back to hydraulic oil container by way to cycle oil through commutation main valve, on described high-pressure oil passage and way to cycle oil, be equipped with repairing path, described repairing path is provided with Pilot operated check valve as controller, the unlatching of the Pilot operated check valve being communicated with described high-pressure oil passage is controlled mouth and is connected with way to cycle oil, the unlatching of the Pilot operated check valve being communicated with described way to cycle oil is controlled mouth and is communicated with high-pressure oil passage.
On described high-pressure oil passage and way to cycle oil, be equipped with overload relief valve, described overload relief valve is connected with described Pilot operated check valve respectively.
Owing to adopting such scheme, this device is by arranging the opening of Pilot operated check valve at pressure hydraulic fluid port end, thereby make pressure oil end control the unlatching of Pilot operated check valve, repairing path when operation is communicated with motor way to cycle oil, reach reduction oil return resistance and reach energy-conservation object.
Accompanying drawing explanation
Fig. 1 (a) is former open type hydraulic system motor control system figure;
Fig. 1 (b) is former open type hydraulic system motor forward control system figure;
Fig. 2 (a) is motor control system figure of the present invention;
Fig. 2 (b) is motor forward control system figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further describe the embodiment of this patent.
With reference to Fig. 1, a kind of open type hydraulic system motor energy conserving system, as shown in Figure 2, with motor, just transferring example explanation the present embodiment to, the present invention comprises hydraulic oil container 1 at open type hydraulic system, hydraulic oil source 2, commutation main valve 3, forward relief valve 51, reversion relief valve 52, reversion Pilot operated check valve 71, forward Pilot operated check valve 72 and motor 6, described high-pressure oil passage A is connected with hydraulic oil source 2, described way to cycle oil B is connected with hydraulic oil container 1, the outlet pressure oil of described hydraulic oil source 2 is connected with the high-pressure oil passage A of motor 6 by described commutation main valve 3, the oil return of described motor 6 is flowed back to hydraulic oil container 1 by way to cycle oil B through commutation main valve 3, on described high-pressure oil passage A and way to cycle oil B, be equipped with repairing path, described repairing path is provided with reversion Pilot operated check valve 71, forward Pilot operated check valve 72 is as controller, the unlatching of the reversion Pilot operated check valve 71 being communicated with described high-pressure oil passage A is controlled a mouthful K1 and is connected with way to cycle oil B, the unlatching of the forward Pilot operated check valve 72 being communicated with described way to cycle oil B is controlled a mouthful K2 and is communicated with high-pressure oil passage A, during forward as shown in Fig. 2 (b), the logical oil of controlling of pilot control opening a of commutation main valve 3, the left position access of commutation main valve, hydraulic oil source outlet pressure oil passes through commutation main valve 3 to motor 6, the high pressure oil of high-pressure oil passage A acts on a unlatching control mouthful K2 for forward Pilot operated check valve 72 simultaneously, forward Pilot operated check valve 72 is opened.Now motor 6 oil return parts are along former way to cycle oil B, 3 times hydraulic oil containers 1 of main reversing valve, and another part returns hydraulic oil container 1 by forward Pilot operated check valve 72, repairing oil circuit.Thereby increased on the one hand the passage of oil return, effectively reduce oil return speed, thereby reducing return line loses along stroke pressure, a part of fluid does not directly pass through main reversing valve 3 through repairing oil pipe oil sump tank on the other hand, also main reversing valve 3 oil return local pressure losses have just been reduced, effectively reduce return pressure loss, reduced motor 6 return pressure P5.When load is constant, motor 6 oil inlet P 4 pressure decreaseds, have reduced hydraulic oil source delivery pressure P1 with respect to original hydraulic system, have reached energy-conservation object.When reversion, in like manner also can reach energy-conservation object.The control device of above case study on implementation is that hydraulic control mode makes repairing road communicate with motor oil return, and also the available mode such as automatically controlled or mechanical makes repairing road communicate with motor oil return.
Revolving on the power head motor control loop digging, before the present invention, its control principle as shown in Figure 1, because power head motor is far from hydraulic oil container, way to cycle oil reaches 10m, so record return pressure from motor return opening, account for 10% of hydraulic oil source outlet pressure, after adopting the present invention as the control mode of Fig. 2, when operation, because part oil return is by the oil return of repairing path, so recording return pressure declines, return pressure only accounts for 5% of hydraulic oil source outlet pressure, and it is original 95% that hydraulic oil source outlet pressure drops to, thereby make the energy-conservation ≈ 5% of hydraulic system power.
Claims (3)
1. an open type hydraulic system motor energy conserving system, the motor that comprises high-pressure oil passage, way to cycle oil and connection high-pressure oil passage and way to cycle oil, it is characterized in that: described way to cycle oil is provided with repairing path and is communicated with pressure oil tank, described repairing path is provided with controller, and described controller is controlled the unlatching of described repairing path by described high-pressure oil passage.
2. open type hydraulic system motor energy conserving system according to claim 1, it is characterized in that, described high-pressure oil passage is connected with hydraulic oil source, described way to cycle oil is connected with hydraulic oil container, the outlet pressure oil of described hydraulic oil source is connected with the high-pressure oil passage of motor by commutation main valve, the oil return of described motor is flowed back to hydraulic oil container by way to cycle oil through commutation main valve, on described high-pressure oil passage and way to cycle oil, be equipped with repairing path, described repairing path is provided with Pilot operated check valve as controller, the unlatching of the Pilot operated check valve being communicated with described high-pressure oil passage is controlled mouth and is connected with way to cycle oil, the unlatching of the Pilot operated check valve being communicated with described way to cycle oil is controlled mouth and is communicated with high-pressure oil passage.
3. open type hydraulic system motor energy conserving system according to claim 1 and 2, is characterized in that, is equipped with overload relief valve on described high-pressure oil passage and way to cycle oil, and described overload relief valve is connected with described Pilot operated check valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593602.8A CN103671311A (en) | 2013-11-21 | 2013-11-21 | Motor energy saving system of open type hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593602.8A CN103671311A (en) | 2013-11-21 | 2013-11-21 | Motor energy saving system of open type hydraulic system |
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| CN103671311A true CN103671311A (en) | 2014-03-26 |
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| CN201310593602.8A Pending CN103671311A (en) | 2013-11-21 | 2013-11-21 | Motor energy saving system of open type hydraulic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163385A (en) * | 2014-07-24 | 2014-11-26 | 武汉船用机械有限责任公司 | Hydraulic control system for winch |
| CN106468166A (en) * | 2016-04-06 | 2017-03-01 | 徐工集团工程机械有限公司 | Rotary drilling rig power-economizing method, system and rotary drilling rig |
| CN107191424A (en) * | 2017-07-13 | 2017-09-22 | 徐工集团工程机械有限公司 | Rotary motor valve group end cap and rotary motor |
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| CN102979133A (en) * | 2012-11-26 | 2013-03-20 | 柳州柳工挖掘机有限公司 | Rotary brake energy recycling device of hydraulic excavator |
| CN203641137U (en) * | 2013-11-21 | 2014-06-11 | 山河智能装备股份有限公司 | Motor energy-saving system for open hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006292067A (en) * | 2005-04-11 | 2006-10-26 | Taihei Dengyo Kaisha Ltd | Hydraulic circuit for high-pressure hydraulic system |
| JP2009006389A (en) * | 2007-06-29 | 2009-01-15 | Toshiba Mach Co Ltd | Cylinder apparatus and molding machine |
| CN101476543A (en) * | 2009-01-24 | 2009-07-08 | 哈尔滨工业大学 | Off-course driving device of non-off course gear used for aerogenerator |
| CN101695816A (en) * | 2009-10-19 | 2010-04-21 | 路文忠 | Low-speed high-torque high-thrust digital electro-hydraulic servo drive device |
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| CN203641137U (en) * | 2013-11-21 | 2014-06-11 | 山河智能装备股份有限公司 | Motor energy-saving system for open hydraulic system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163385A (en) * | 2014-07-24 | 2014-11-26 | 武汉船用机械有限责任公司 | Hydraulic control system for winch |
| CN106468166A (en) * | 2016-04-06 | 2017-03-01 | 徐工集团工程机械有限公司 | Rotary drilling rig power-economizing method, system and rotary drilling rig |
| CN106468166B (en) * | 2016-04-06 | 2023-11-03 | 江苏徐工工程机械研究院有限公司 | Energy-saving method and system for rotary drilling rig and rotary drilling rig |
| CN107191424A (en) * | 2017-07-13 | 2017-09-22 | 徐工集团工程机械有限公司 | Rotary motor valve group end cap and rotary motor |
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Application publication date: 20140326 |