CN105443452B - A kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit - Google Patents

A kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit Download PDF

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Publication number
CN105443452B
CN105443452B CN201511002061.2A CN201511002061A CN105443452B CN 105443452 B CN105443452 B CN 105443452B CN 201511002061 A CN201511002061 A CN 201511002061A CN 105443452 B CN105443452 B CN 105443452B
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mouths
oil
valve
communicated
hydraulic
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CN105443452A (en
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陈娟
湛从昌
曾良才
徐康
蒋俊
陈克应
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14Energy-recuperation means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators

Abstract

The present invention relates to a kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit.Its technical scheme is:The force feed mouth of volume adjustable hydraulic pump (1) is communicated with the oil-in of hydraulic motor (4), and the P mouths of multifunction electromagnetic reversal valve (3), A mouths, B mouths and T mouths are communicated by the oil-in of respective oil pipe oil return opening successively with corresponding hydraulic motor (4), fuel tank (8), accumulator (7) and hydraulic motor (4).The multifunction electromagnetic reversal valve (3) is:First check valve (5) is housed between the oil duct that oil duct and T mouths that the P mouths of spring centered three-position four-way electromagnetic directional valve are communicated with A mouths are communicated with B mouths, the first check valve (5) oil-in and oil-out are communicated with corresponding P mouths and B mouths;The oil-in and oil-out of the second check valve (6) that the oil duct that the B mouths and T mouths of spring centered three-position four-way electromagnetic directional valve is communicated is equipped with is communicated with corresponding T mouths and B mouths.Life-span length of the present invention, the low little, noise of impact, smooth running and energy saving.

Description

A kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit
Technical field
The invention belongs to hydraulic energy reclaims buffer unit technical field.Specifically related to a kind of multifunction electromagnetic reversal valve control The hydraulic energy of system reclaims buffer unit.
Background technology
With the development of modern technologies, in the last few years, constantly to efficiently developing with energy saving direction, people are to liquid for hydraulic technique Pressure system and its hydraulic energy reclaim the performance of buffer unit also pay attention to day by day, such as require that hydraulic energy reclaims buffer unit and has The features such as life-span length, the low little, noise of impact, smooth running and energy saving, therefore, improve hydraulic energy and reclaim buffer unit Efficiency, life-span and environment friendly become one of current important subject.Existing hydraulic energy is reclaimed in buffer unit Hydraulic motor entrance communicate with volume adjustable hydraulic pump, outlet typically directly communicate with fuel tank, in hydraulic motor and volume adjustable hydraulic pump Between be connected to accumulator, the fluid under damped condition in hydraulic motor directly flows back to fuel tank.
The hydraulic energy of this structure reclaims buffer unit and is primarily present following shortcoming:
1st, the oil back chamber for braking moment hydraulic motor can produce larger pressure, cause hydraulic motor instantaneously to produce certain Impact, affects the life-span of motor.
2nd, the hydraulic shock for braking the generation of moment hydraulic motor can cause the generation of noise, cause the waste of energy, unfavorable In the efficiency for improving hydraulic system.
3rd, hydraulic motor braking energy can not be reclaimed, causes the waste of energy.
4th, the working condition of accumulator can not be controlled in the course of work, it is impossible to realize the switching under different working conditions.
The content of the invention
It is contemplated that overcoming the defect of prior art, it is therefore an objective to provide a kind of hydraulic pressure of multifunction electromagnetic reversal valve control Energy regenerating buffer unit, the hydraulic energy reclaim buffer unit life-span length, impact low little, noise, smooth running and save energy Source.
For achieving the above object, the technical solution used in the present invention:The hydraulic energy reclaims buffer unit includes variable Hydraulic pump, overflow valve, multifunction electromagnetic reversal valve, hydraulic motor, accumulator and fuel tank.
The inlet port of volume adjustable hydraulic pump communicated with fuel tank by oil pipe, and the force feed mouth of volume adjustable hydraulic pump and hydraulic motor enter Hydraulic fluid port is communicated, the P mouths of multifunction electromagnetic reversal valve, A mouths, B mouths and T mouths by respective oil pipe successively with corresponding hydraulic motor Oil return opening, fuel tank, the oil-in of accumulator and hydraulic motor communicate, the oil-in of overflow valve and the force feed mouth of volume adjustable hydraulic pump Communicate.
The multifunction electromagnetic reversal valve is:Communicate with A mouths in the P mouths of spring centered three-position four-way electromagnetic directional valve First check valve is housed between the oil duct that the T mouths of oil duct and spring centered three-position four-way electromagnetic directional valve are communicated with B mouths, first is single Communicate to valve oil-in and oil-out P mouths corresponding with spring centered three-position four-way electromagnetic directional valve and B mouths;It is spring centered The oil duct that the B mouths and T mouths of three-position four-way electromagnetic directional valve is communicated is equipped with the second check valve, the second check valve oil-in and oil-out T mouths corresponding with spring centered three-position four-way electromagnetic directional valve and B mouths are communicated.
The present invention the course of work be:When multifunction electromagnetic reversal valve is in middle position, the fluid Jing variable liquid in fuel tank Press pump enters hydraulic motor, drives hydraulic motor work, bit stream in the fluid Jing multifunction electromagnetic reversal valves that hydraulic motor is discharged Oil sump tank;When multifunction electromagnetic reversal valve is in right position, volume adjustable hydraulic pump fuel cut-off, the fluid Jing that hydraulic motor is discharged are more The right bit stream of function solenoid directional control valve returns accumulator;When multifunction electromagnetic reversal valve is in left position, the fluid Jing variables in fuel tank Hydraulic pump enters accumulator.When hydraulic system is again started up, multifunction electromagnetic reversal valve is in middle position, the fluid Jing in fuel tank Volume adjustable hydraulic pump enters hydraulic motor, drives hydraulic motor work, the fluid Jing multifunction electromagnetic reversal valves that hydraulic motor is discharged Middle position flows back to fuel tank, and the second check valve that the fluid Jing multifunction electromagnetic reversal valve middle positions in accumulator are provided with flows into hydraulic motor Oil-in, drives hydraulic motor work.
There is advantages below compared with prior art due to adopting above-mentioned technical proposal, the present invention:
1st, the multifunction electromagnetic reversal valve that adopts of the present invention is for improved spring centering three-position four-way electromagnetic directional valve, three Respectively:Middle position is nominal situation station, and during the station, electric magnet must not be electric, prevents the waste of energy;Left position is accumulator (7) Pressurising operating mode station;Right position is hydraulic motor damped condition station, and in damped condition, the fluid that hydraulic motor is discharged is flowed into and stored In energy device, braking energy is stored in accumulator with fluid form, and fluid can relieving hydraulic motor product during flowing into accumulator Raw impact, so as to reduce hydraulic motor impact wear, extends the service life of hydraulic motor.
2nd, the present invention can slow down hydraulic shock produced when hydraulic motor is braked by accumulator, reduce the product of noise It is raw, the loss of energy is reduced, the efficiency of hydraulic system is improve.
3rd, accumulator of the invention can slow down the flow pulsation that volume adjustable hydraulic pump exports fluid, reduce dependent variable hydraulic pump defeated Go out caused by the pulsation of fluid hydraulic motor output it is unstable.
4th, the fluid of accumulator of the invention storage can be used again in hydraulic motor work, completed to hydraulic pressure horse Up to the recycling of braking energy, the effect for economizing on resources is served;Meanwhile, multifunction electromagnetic reversal valve electromagnetism when middle position works Ferrum must not be electric, can effectively prevent energy dissipation.
5th, the first check valve and the second check valve that multifunction electromagnetic reversal valve middle position is provided with can be effectively ensured the stream of fluid To correct, prevent the fluid in accumulator from directly flowing back to fuel tank, drop low-energy waste.
Therefore, the characteristics of present invention has life-span length, impacts low little, noise, smooth running and energy saving.
Description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description, not the limit to its protection domain System.
Embodiment 1
A kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit.As shown in figure 1, the hydraulic energy Reclaiming buffer unit includes volume adjustable hydraulic pump 1, overflow valve 2, multifunction electromagnetic reversal valve 3, hydraulic motor 4, accumulator 7 and fuel tank 8。
As shown in figure 1, the inlet port of volume adjustable hydraulic pump 1 is communicated with fuel tank 8 by oil pipe, the force feed mouth of volume adjustable hydraulic pump 1 Communicate with the oil-in of hydraulic motor 4, the P mouths of multifunction electromagnetic reversal valve 3, A mouths, B mouths and T mouths by respective oil pipe successively The oil-in of oil return opening, fuel tank 8, accumulator 7 and hydraulic motor 4 with corresponding hydraulic motor 4 is communicated, the oil-feed of overflow valve 2 Mouth is communicated with the force feed mouth of volume adjustable hydraulic pump 1.
As shown in figure 1, the structure of the multifunction electromagnetic reversal valve 3 is:In spring centered 3-position 4-way electromagnetic switch Fill between the oil duct that the P mouths of valve are communicated with A mouths and the oil duct that the T mouths of spring centered three-position four-way electromagnetic directional valve are communicated with B mouths There are the first check valve 5,5 oil-in of the first check valve and oil-out P corresponding with spring centered three-position four-way electromagnetic directional valve Mouth and B mouths are communicated;The oil duct that the B mouths and T mouths of spring centered three-position four-way electromagnetic directional valve is communicated is equipped with the second check valve 6, Second check valve, 6 oil-in and oil-out T mouths corresponding with spring centered three-position four-way electromagnetic directional valve and B mouths are communicated.
The course of work of this specific embodiment is as shown in Figure 1:When multifunction electromagnetic reversal valve 3 is in middle position, fuel tank 8 In fluid Jing volume adjustable hydraulic pumps 1 enter hydraulic motor 4, drive hydraulic motor 4 work, hydraulic motor 4 discharge fluid Jing it is many 3 middle position of function solenoid directional control valve flows back to fuel tank 8;When multifunction electromagnetic reversal valve 3 is in right position, volume adjustable hydraulic pump 1 stops supplying Oil, the 3 right bit stream of fluid Jing multifunction electromagnetics reversal valve that hydraulic motor 4 is discharged return accumulator 7;When multifunction electromagnetic reversal valve 3 In left position when, the fluid Jing volume adjustable hydraulic pumps 1 in fuel tank 8 enter accumulator 7;It is when hydraulic system is again started up, multi-functional Solenoid directional control valve 3 is in middle position, and the fluid Jing volume adjustable hydraulic pumps 1 in fuel tank 8 enter hydraulic motor 4, drive 4 work of hydraulic motor Make, 3 middle position of fluid Jing multifunction electromagnetics reversal valve that hydraulic motor 4 is discharged flows back to fuel tank 8, many work(of fluid Jing in accumulator 7 The second check valve 6 that energy 3 middle position of solenoid directional control valve is provided with flows into 4 oil-in of hydraulic motor, drives hydraulic motor 4 to work.
This specific embodiment has advantages below compared with prior art:
1st, the multifunction electromagnetic reversal valve 3 that this specific embodiment is adopted is changed for improved spring centering 3-position 4-way electromagnetism To valve, three are respectively:Middle position is nominal situation station, and during the station, electric magnet must not be electric, prevents the waste of energy;Zuo Weiwei 7 pressurising operating mode station of accumulator;Right position is 4 damped condition station of hydraulic motor, in damped condition, what hydraulic motor 4 was discharged Fluid is flowed in accumulator 7, and braking energy is stored in accumulator 7 with fluid form, and fluid can delay during flowing into accumulator 7 The impact that solution hydraulic motor 4 is produced, so as to reduce 4 impact wear of hydraulic motor, extends the service life of hydraulic motor 4.
2nd, this specific embodiment can slow down hydraulic shock produced when hydraulic motor 4 is braked by accumulator 7, reduce The generation of noise, reduces the loss of energy, improves the efficiency of hydraulic system.
3rd, the accumulator 7 of this specific embodiment can slow down the flow pulsation that volume adjustable hydraulic pump 1 exports fluid, reduce because becoming It is unstable that hydraulic motor 4 caused by the pulsation of the amount output fluid of hydraulic pump 1 is exported.
4th, the fluid of the storage of accumulator 7 of this specific embodiment can be used again in hydraulic motor 4 works, and completed Recycling to 4 braking energy of hydraulic motor, serves the effect for economizing on resources;Meanwhile, multifunction electromagnetic reversal valve 3 is in During the work of position, electric magnet must not be electric, can effectively prevent energy dissipation.
5th, the first check valve 5 and the second check valve 6 that 3 middle position of multifunction electromagnetic reversal valve is provided with can be effectively ensured fluid Flow direction is correct, prevents the fluid in accumulator 7 from directly flowing back to fuel tank 8, drops low-energy waste.
Therefore, the characteristics of this specific embodiment has life-span length, impacts low little, noise, smooth running and energy saving.

Claims (1)

1. a kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit, it is characterised in that the hydraulic energy is returned Receiving buffer unit includes volume adjustable hydraulic pump (1), overflow valve (2), multifunction electromagnetic reversal valve (3), hydraulic motor (4), accumulator And fuel tank (8) (7);
The inlet port of volume adjustable hydraulic pump (1) is communicated with fuel tank (8) by oil pipe, force feed mouth and the hydraulic pressure horse of volume adjustable hydraulic pump (1) Oil-in up to (4) is communicated, the P mouths of multifunction electromagnetic reversal valve (3), A mouths, B mouths and T mouths by respective oil pipe successively with it is right The oil-in of the oil return opening of the hydraulic motor (4) answered, fuel tank (8), accumulator (7) and hydraulic motor (4) is communicated, overflow valve (2) Oil-in communicate with the force feed mouth of volume adjustable hydraulic pump (1);The multifunction electromagnetic reversal valve (3) is:Spring centered three Oil duct and the T mouths of spring centered three-position four-way electromagnetic directional valve and B mouths that the P mouths of position four-way electromagnetic reversing valve are communicated with A mouths First check valve (5), the first check valve (5) oil-in and oil-out and spring centered 3-position 4-way are housed between the oil duct for communicating The corresponding P mouths of solenoid directional control valve and B mouths are communicated;The oil duct that the B mouths and T mouths of spring centered three-position four-way electromagnetic directional valve is communicated Equipped with the second check valve (6), the second check valve (6) oil-in and oil-out and spring centered three-position four-way electromagnetic directional valve pair The T mouths and B mouths answered is communicated.
CN201511002061.2A 2015-12-29 2015-12-29 A kind of hydraulic energy of multifunction electromagnetic reversal valve control reclaims buffer unit Active CN105443452B (en)

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Application Number Priority Date Filing Date Title
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CN105443452B true CN105443452B (en) 2017-03-29

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