CN104747544A - Engineering machinery movable arm potential energy variable amplitude energy recovery device - Google Patents
Engineering machinery movable arm potential energy variable amplitude energy recovery device Download PDFInfo
- Publication number
- CN104747544A CN104747544A CN201510055900.0A CN201510055900A CN104747544A CN 104747544 A CN104747544 A CN 104747544A CN 201510055900 A CN201510055900 A CN 201510055900A CN 104747544 A CN104747544 A CN 104747544A
- Authority
- CN
- China
- Prior art keywords
- valve
- way
- energy
- mouth
- electromagnetic directional
- 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.)
- Granted
Links
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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to an engineering machinery movable arm potential energy variable amplitude energy recovery device which comprises a movable arm oil cylinder, a pressure sensor, a balance valve, a two-position two-way electromagnetic valve, overflow valves, a three-position four-way electromagnetic reversing valve, one-way valves, a hydraulic pump, a motor, an oil tank, an energy accumulator, a proportional flow valve and a controller. The motor is in mechanical transmission connection with the hydraulic pump. The hydraulic pump is connected with the oil tank and the one-way valves. The three-position four-way electromagnetic reversing valve is connected with the one-way valves, the oil tank, the movable arm oil cylinder and the balance valve. The balance valve is connected with a large-cavity oil port of the movable arm oil cylinder and the two-position two-way electromagnetic valve. The two-position two-way electromagnetic valve is connected with the three-position four-way electromagnetic reversing valve. The first overflow valve is connected with the three-position four-way electromagnetic reversing valve. The proportional flow valve is connected with the one-way valves. A proportional flow valve oil port is connected with the one-way valve. The third one-way valve is connected with the fourth one-way valve and the energy accumulator. The second overflow valve is connected with the one-way valves and the oil tank. The energy recovery device has the advantages of saving energy, recovering variable amplitude energy and being fast in dynamic response.
Description
Technical field
The present invention relates to a kind of engineering machinery movable arm potential energy reclaiming device, particularly a kind of engineering machinery movable arm potential energy luffing energy recycle device using accumulator, belongs to technical field of engineering machinery.
Background technique
Engineering machinery uses class engineering construction engineering goods widely.Along with the continuous increase of engineering machinery recoverable amount, the energy that a large amount of engineering machinery consumes, the pollutant of discharge create serious impact to environment.Energy-conservation, efficient engineering machinery new product has become the R&D target of domestic and international project machinery.
Engineering machinery is in operation process, and quality and the inertia of band year equipment are large, and the gravitational potential energy overwhelming majority in decentralization process is converted into heat energy, not only wastes energy, but also makes hydraulic fluid temperature increase, and needs special hydraulic oil cooler cooling liquid force feed.Meanwhile, in order to anti-stopper lever rate of descent is too fast, throttling speed control circuit is set usually, uses the rate of descent of throttle valve adjustment boom cylinder.In this process, more energy ezpenditure, on throttle orifice, not only causes energy dissipation, and a large amount of potential energy becomes heat energy, adds the consumption of fuel, and easily causes Hydraulic System Fever, reduces the life-span of element.
In order to improve energy saving and the emissions reduction of system, should consider to adopt energy regenerating and regenerative use technology to hydraulic system.This not only can energy saving, alleviate discharge, can also available protecting parts, extend the complete machine maintenance and use life-span.At present, engineering machinery energy reclaiming method mainly contains electric, hydraulic type and electric gas/liquid pressure pressure type that both combine.
Electric energy regenerating has used for reference the concept of the energy-recuperation system of hybrid vehicle: by the remaining kinetic energy etc. of the residue potential energy in each for engineering machinery actuation cycle and revolving dial, by oil hydraulic motor and generator, be converted into power storage to get up to carry out secondary application, the utilization ratio of energy is improved further, reaches energy-conservation object.Such as patent CN1830750A utilizes motor to reclaim gravitational potential energy and kinetic energy, and by the regenerative braking capability with motors motor by energy regenerating to battery.Such as pressure energy is converted into mechanical energy by oil hydraulic motor by patent CN102182730A again, and is electric energy by the generator that is connected with oil hydraulic motor by changes mechanical energy, is stored in super capacitor, realizes potential energy and reclaim.
But there is a lot of problem in electric energy-recuperation system.First is that the electric energy storage units cost such as high-performance storage battery and super capacitor is higher, limits program application in practice.Second is that the decline process time of swing arm is very short, and in the process significantly changed at rotating speed, the charge efficiency of the generating of generator and battery or electric capacity is lower.3rd be mechanical energy, pressure energy, electric energy repeatedly transform the utilization ratio greatly reducing energy regenerating.
Hydraulic type energy regenerating adopts accumulator as energy-storage travelling wave tube, and accumulator can store and release pressure, and its stable performance, can meet the requirement of engineering machinery fast energy-saving.Such as patent CN1958972A utilizes accumulator directly absorb and directly discharge gravitational potential energy; Patent CN2076972U utilizes accumulator indirectly to be absorbed by two-way pump/motor indirectly to discharge gravitational potential energy.But all there is various shortcoming in previous hydraulic type energy-recuperation system, such as, system described in patent CN1958972A, in the process released energy of accumulator, pressure drop, when its underpressure with push the work forward tool movement time, the energy be stored in accumulator can not get release, cause energy recovery efficiency low.And for example, system described in patent CN2076972U, although the pressure oil that can discharge in accumulator completely, when energy regenerating and release, the sense of rotation of pump is inconsistent, and such application of installation is inappropriate in lifting with the engineering machinery swing arm frequently that declines.
What electric gas/liquid pressure pressure type energy regenerating utilized motor regenerative braking and accumulator mixes power-economizing method, and such as patent CN101408213A utilizes accumulator to carry out directly absorbing and directly releasing energy, and utilizes motor to carry out regenerative braking to two-way pump/motor simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of engineering machinery movable arm potential energy luffing energy recycle device; engineering machinery movable arm potential energy is recycled by hydraulic proportional control realization luffing; improve energy recovery efficiency; and engineering machinery swing arm oil hydraulic circuit is protected, to solve the deficiency in above-mentioned background technology.
The technical solution adopted in the present invention is: a kind of engineering machinery movable arm potential energy luffing energy recycle device, comprise boom cylinder 1, first pressure transducer 2, second pressure transducer 14, equilibrium valve 3,2/2-way solenoid valve 4, first relief valve 5, second relief valve 18, three-position four-way electromagnetic directional valve 6, one-way valve, oil hydraulic pump 8, motor 9, fuel tank 10, accumulator 13, proportional flow control valve 15 and controller, wherein:
Described motor 9 is connected with oil hydraulic pump 8 mechanical transmission; Described oil hydraulic pump 8 filler opening is connected with fuel tank 10, and oil hydraulic pump 8 oil outlet is connected with the first one-way valve 7 filler opening; The P mouth of described three-position four-way electromagnetic directional valve 6 is connected with the first one-way valve 7 oil outlet, the T mouth of three-position four-way electromagnetic directional valve 6 is connected with fuel tank 10, the A mouth of three-position four-way electromagnetic directional valve 6 is connected with the loculus hydraulic fluid port L of boom cylinder 1, and the B mouth of three-position four-way electromagnetic directional valve 6 is connected with the I mouth of equilibrium valve 3; The H mouth of described equilibrium valve 3 is connected with the large chamber hydraulic fluid port M of boom cylinder 1, and the G mouth of equilibrium valve 3 is connected with the F mouth of 2/2-way solenoid valve 4; The E mouth of described 2/2-way solenoid valve 4 is connected with the A mouth of three-position four-way electromagnetic directional valve 6; The described filler opening C of the first relief valve 5 is connected with the A mouth of three-position four-way electromagnetic directional valve 6, and the oil outlet D of the first relief valve 5 is connected with the B mouth of three-position four-way electromagnetic directional valve 6; The K hydraulic fluid port of described proportional flow control valve 15 is connected with the filler opening of the second one-way valve 11 with the 3rd one-way valve 12 respectively, and the J hydraulic fluid port of described proportional flow control valve 15 is connected with the oil outlet of the 4th one-way valve 16 with the 5th one-way valve 17 respectively; The filler opening of oil outlet the respectively with five one-way valve 17 of described second one-way valve 11 is connected with the large chamber hydraulic fluid port M of boom cylinder 1; The oil outlet of described 3rd one-way valve 12 is connected with accumulator 13 hydraulic fluid port N with the filler opening of the 4th one-way valve 16 respectively; Described first pressure transducer 2 is connected with the large chamber hydraulic fluid port M of boom cylinder 1; Described second pressure transducer 14 is connected with the hydraulic fluid port N of accumulator 13; The filler opening of described second relief valve 18 is connected with the oil outlet of the first one-way valve 7, and the oil outlet of the second relief valve 18 is connected with fuel tank 10;
Described three-position four-way electromagnetic directional valve 6 has the first switch type electromagnet D1 and second switch formula electromagnet D2, described 2/2-way solenoid valve 4 has three-switch type electromagnet D3, described proportional flow control valve 15 has proportion electro-magnet B1, and described first switch type electromagnet D1, second switch formula electromagnet D2, three-switch type electromagnet D3 and proportion electro-magnet B1 be connection control device respectively.
The basic principle of movable arm potential energy luffing energy regenerating of the present invention is:
1. the starting stage of swing arm decline, boom cylinder 1 is by deadweight contracting cylinder; Controller controls second switch formula electromagnet D2 and obtains electric, the first switch type electromagnet D1 dead electricity, and three-position four-way electromagnetic directional valve 6 is operated in right position, and major loop fluid enters the loculus of boom cylinder 1; Controller controls three-switch type electromagnet D3 dead electricity, 2/2-way solenoid valve 4 cuts out, thus equilibrium valve 3 cuts out, proportional flow control valve 15 is opened according to certain aperture with Time Controller control ratio electromagnet B1, make the fluid passing ratio Flow valve 15 in the large chamber of boom cylinder 1 enter accumulator 13, this is accumulation of energy process.
2. when swing arm drops to a certain degree, gravity is obstructed gradually and is balanced, the decline of boom cylinder is also obstructed, this Time Controller controls three-switch type electromagnet D3 and obtains electric, 2/2-way solenoid valve 4 is opened, thus equilibrium valve 3 is opened, the accumulation of energy process of accumulator 13 terminates, and boom cylinder 1 drops to the end according to normal oil hydraulic circuit.
3. the starting stage of swing arm rising, controller controls three-switch type electromagnet D3 dead electricity, 2/2-way solenoid valve 4 cuts out, thus equilibrium valve 3 cuts out, controller is according to the opening time of the force value control ratio electromagnet B1 of the first pressure transducer 2 and the second pressure transducer 14 and aperture, and fluid discharges from accumulator 13, enters the large chamber of boom cylinder 1 after proportional flow control valve 15, make swing arm increase, this is exergonic process; Controller controls electromagnet D1 and obtains electric, D2 dead electricity, and three-position four-way electromagnetic directional valve 6 is operated in left position, and oil hydraulic pump 10 also can be the large chamber fuel feeding of boom cylinder 1 simultaneously.
4. swing arm rises to a certain degree, along with the increase of exoergic time, the releasability of accumulator can weaken to some extent, when value slightly larger than the first pressure transducer 2 of the force value of the second pressure transducer 14, controller control ratio electromagnet B1 dead electricity, close proportional flow control valve 15, the exergonic process of accumulator 13 terminates, and boom cylinder continues to rise to desired location by normal oil hydraulic circuit.
The invention has the beneficial effects as follows:
1. energy-saving effect.The present invention by hydraulic accumulator effectively recycling engineering machinery swing arm potential energy, the energy reclaimed is discharged in the swing arm rising incipient stage, therefore the energy needed for swing arm rising is no longer rely on oil hydraulic pump completely, saves the Power supply of main hydraulic system, reaches energy-conservation object.
2. achieve luffing energy regenerating.The present invention mainly adds proportional flow control valve and two pressure transducers in former loop, and by comparing the force value of two pressure transducers, the aperture size of control ratio Flow valve, to realize the luffing energy regenerating of proportional control.Luffing energy regenerating can reduce the system shock that swing arm velocity variations amplitude is brought more greatly.
3. realize system protection.First, controller, by the flow in the opening control system of proportion electro-magnet in control ratio Flow valve, can limit the rate of descent of swing arm, avoid swing arm rate of descent too fast when contracting cylinder; When stretching cylinder, also can limit the rate of climb of swing arm, avoiding because exoergic ability when accumulator has just started exoergic is strong and causing the swing arm rate of climb too fast.Secondly, the little cavity pressure of boom cylinder is limited by the first relief valve 5, and hydraulic pump outlet pressure is limited by the second relief valve 18.Finally, equilibrium valve has relief function, and the protection of large chamber and accumulator is set up by the relief function of equilibrium valve 3 and determined.
4. energy recovery efficiency is high.On energy regenerating Land use systems, accumulator is adopted directly to reclaim and release energy.Compared with the electric energy regenerating mode described in background technique, movable arm potential energy is converted into pressure energy and is stored in accumulator, can be used directly, do not need to be converted into the kinetic energy of oil hydraulic motor and the electric energy of storage battery, Conversion of Energy number of times is few, has farthest reclaimed the recycling potential energy of engineering machinery swing arm.
5. dynamic response is fast.On the one hand, compared with electric energy regenerating mode, the present invention does not have the charge and discharge process of electrical power generators and battery or electric capacity, therefore the recovery of energy and release are by the restriction of the generating of generator and the charge efficiency of battery or electric capacity, even if the frequent lifting of swing arm and decline, also effectively can realize fast energy and recycle; On the other hand, oil circuit break-makes all in the present invention is all by the control realization of controller to switch type solenoid valve and proportional electromagnetic valve, and the speed of response of switch type solenoid valve is very fast, and proportional electromagnetic valve also has very sensitive opening and closing characteristic.These effectively can ensure the action response speed of swing arm and the speed of response of accumulator charge and discharge energy.
6. controllability is good, and automaticity is high.Controller according to the action of swing arm and the force value of pressure transducer judge accumulator when fill can, when exoergic; Oil hydraulic circuit both can choice for use accumulator, also can not use accumulator, according to Normal hydraulic loop works.Systemic-function is realized by the program control solenoid valve in controller completely, and control technique is simply ripe, is easy to realize.Therefore, system controllability and measurability is good, and automaticity is high.
7. system cost is low.The present invention's primary component used comprises pressure transducer, equilibrium valve, 2/2-way solenoid valve, relief valve, three-position four-way electromagnetic directional valve, one-way valve, accumulator, proportional flow control valve etc., all common ripe hydraulic element, not only reliability is high, also reduces the cost of whole system.Simultaneously because number of elements used is less, level of integration is higher, decreases the energy loss brought by system complexity.
Accompanying drawing explanation
Fig. 1 is engineering machinery movable arm potential energy luffing energy recycle device systematic schematic diagram.
Fig. 2 is certain two boom cylinder excavator swing arm potential energy luffing energy recycle device systematic schematic diagram, is the present invention's application example on board a dredger.The present invention will be described for excavator for Fig. 2, but the present invention is not limited only to use on board a dredger, is equally applicable to Other Engineering machinery, such as loader etc.In the present invention, boom cylinder quantity is generally 1 to 2, and for loader, boom cylinder is generally 2; For excavator, model difference then boom cylinder quantity may be 1 or 2, and this sentences certain two boom cylinder excavator is that example is described, therefore Fig. 2 comprises two identical boom cylinders.
Number in the figure: 1-boom cylinder; 2,14-be respectively first, second pressure transducer; 3-equilibrium valve; 4-2/2-way solenoid valve; 5,18-be respectively first, second relief valve; 6-three-position four-way electromagnetic directional valve; 7,11,12,16,17-be respectively first, second, third, fourth and fifth one-way valve; 8-oil hydraulic pump; 9-motor; 10-fuel tank; 13-accumulator; 15-proportional flow control valve, D1-the first switch type electromagnet, D2-second switch formula electromagnet, D3-the three-switch type electromagnet, B1-proportion electro-magnet.
Embodiment
Below in conjunction with accompanying drawing by providing details of the present invention to the description of embodiment.
Embodiment 1:
The one typical case type of engineering machinery is excavator, the excavator swing arm potential energy luffing energy-recuperation system shown in Fig. 2 according to Technical Design provided by the invention, this system is an example of the present invention, but implement technical solution of the present invention example not only this.
The potential energy of excavator swing arm shown in Fig. 2 luffing energy-recuperation system comprises two boom cylinders, two pressure transducers, equilibrium valve, 2/2-way solenoid valve, two relief valves, three-position four-way electromagnetic directional valve, five one-way valves, oil hydraulic pump, motor, fuel tank, accumulator, proportional flow control valve and controllers.
As shown in Figure 2, two boom cylinder 1, first pressure transducers 2 and the second pressure transducer 14, equilibrium valve 3,2/2-way solenoid valve 4, first relief valve 5 and the second relief valve 18, three-position four-way electromagnetic directional valve 6, first to the 5th one-way valve, oil hydraulic pump 8, motor 9, fuel tank 10, accumulator 13, proportional flow control valve 15 and controller (not drawing in the drawings).
Motor 9 is connected with oil hydraulic pump 8 mechanical transmission; Oil hydraulic pump 8 filler opening is connected with fuel tank 10, and oil hydraulic pump 8 oil outlet is connected with the first one-way valve 7 filler opening; The P mouth of three-position four-way electromagnetic directional valve 6 is connected with the first one-way valve 7 oil outlet, the T mouth of three-position four-way electromagnetic directional valve 6 is connected with fuel tank 10, the A mouth of three-position four-way electromagnetic directional valve 6 is connected with the loculus hydraulic fluid port L of boom cylinder 1, and the B mouth of three-position four-way electromagnetic directional valve 6 is connected with equilibrium valve I mouth; The H mouth of equilibrium valve 3 is connected with the large chamber hydraulic fluid port M of boom cylinder 1, and the G mouth of equilibrium valve 3 is connected with the F mouth of 2/2-way solenoid valve 4; The E mouth of 2/2-way solenoid valve 4 is connected to the A mouth of three-position four-way electromagnetic directional valve 6; The filler opening C of the first relief valve 5 is connected to the A mouth of three-position four-way electromagnetic directional valve 6, and the oil outlet D of the first relief valve 5 is connected to the B mouth of three-position four-way electromagnetic directional valve 6; The K hydraulic fluid port of proportional flow control valve 15 is connected with the filler opening of the second one-way valve 11 with the 3rd one-way valve 12, and the J hydraulic fluid port of proportional flow control valve 15 is connected with the oil outlet of the 4th one-way valve 16 with the 5th one-way valve 17; The oil outlet of the second one-way valve 11 is connected with the large chamber hydraulic fluid port M of boom cylinder 1 with the filler opening of the 5th one-way valve 17; The oil outlet of the 3rd one-way valve 12 is connected with the hydraulic fluid port N of accumulator 13 with the filler opening of the 4th one-way valve 16; First pressure transducer 2 is connected to the large chamber hydraulic fluid port M of boom cylinder 1; Second pressure transducer 14 is connected to the hydraulic fluid port N of accumulator 13; The filler opening of the second relief valve 18 is connected to the oil outlet of the first one-way valve 7, and the oil outlet of the second relief valve 18 is connected to fuel tank 10.
Three-position four-way electromagnetic directional valve 6 has two switch type electromagnet, is respectively the first switch type electromagnet D1 and second switch formula electromagnet D2, is controlled by controller; 2/2-way solenoid valve 4 has a three-switch type electromagnet D3, is controlled by controller; Proportional flow control valve 15 has a proportion electro-magnet B1, is controlled by controller.
The working principle of excavator swing arm potential energy luffing energy regenerating is as follows:
Controller gathers the force value data of the first pressure transducer 2 and the second pressure transducer 14, and according to the working state of swing arm (rise, decline or transfixion), send control signal, control the first switch type electromagnet D1, second switch formula electromagnet D2, the break-make of three-switch type electromagnet D3 and the aperture of proportion electro-magnet B1, realize the predetermined action of swing arm, what realize accumulator fills energy and exoergic simultaneously, and then reaches the object of excavator swing arm potential energy luffing energy regenerating.
Specific works process is as follows:
1. the starting stage of descending movable arm of excavator, boom cylinder 1 is by deadweight contracting cylinder; Controller controls second switch formula electromagnet D2 and obtains electric, the first switch type electromagnet D1 dead electricity, and three-position four-way electromagnetic directional valve 6 is operated in right position, and major loop fluid enters the loculus of boom cylinder 1; Controller controls three-switch type electromagnet D3 dead electricity, 2/2-way solenoid valve 4 cuts out, thus equilibrium valve 3 cuts out, proportional flow control valve 15 is opened according to certain aperture with Time Controller control ratio electromagnet B1, make the fluid passing ratio Flow valve 15 in the large chamber of boom cylinder 1 enter accumulator 13, this is accumulation of energy process.In this process, the path that flows through flowing into boom cylinder loculus fluid is: right position → two boom cylinder 1 loculus of fuel tank 10 → oil hydraulic pump 8 → the first one-way valve 7 → three-position four-way electromagnetic directional valve 6; The route that flows through flowing into accumulator fluid is: large chamber → the 5th one-way valve 17 → proportional flow control valve the 15 → three one-way valve 12 → accumulator 13 of two boom cylinders 1; The transform gravitational energy of the Conversion of Energy related to mainly boom cylinder 1 is the pressure energy of accumulator 13 inner fluid.In this process, proportional flow control valve can play speed limit effect, and anti-stopper lever rate of descent is too fast.
2. descending movable arm of excavator to a certain extent time, gravity is obstructed gradually and is balanced, and the decline of boom cylinder is also obstructed; This Time Controller controls three-switch type electromagnet D3 and obtains electric, and 2/2-way solenoid valve 4 is opened, thus equilibrium valve 3 is opened; Controller control ratio electromagnet B1 dead electricity, proportional flow control valve is closed, and the accumulation of energy process of accumulator 13 terminates; Boom cylinder drops to the end according to normal oil hydraulic circuit.In this process, the path that flows through flowing into boom cylinder loculus fluid is: right position → two boom cylinder 1 loculus of fuel tank 10 → oil hydraulic pump 8 → the first one-way valve 7 → three-position four-way electromagnetic directional valve 6; The path that flows through flowing back to fuel tank fluid is: the large right position → fuel tank 10 of chamber → equilibrium valve 3 → three-position four-way electromagnetic directional valve 6 of two boom cylinders 1; In this process, the electric energy conversion of the Conversion of Energy related to mainly motor 9 is the kinetic energy of oil hydraulic pump 8, then is converted into the pressure energy of fluid, finally becomes the kinetic energy that swing arm declines.
3. the starting stage of excavator swing arm rising, controller controls three-switch type electromagnet D3 dead electricity, and 2/2-way solenoid valve 4 cuts out, thus equilibrium valve 3 cuts out; This one-phase, the fluid making boom cylinder 1 increase is from two parts, one is that controller controls second switch formula electromagnet D2 dead electricity, the first switch type electromagnet D1 obtains electric, three-position four-way electromagnetic directional valve 6 is operated in left position, boom cylinder 1 loculus fluid is by the left bit stream oil sump tank 10 of three-position four-way electromagnetic directional valve 6, and oil hydraulic pump 8 is the large chamber fuel feeding of boom cylinder 1 by the left position of three-position four-way electromagnetic directional valve 6 and equilibrium valve 3; Two is controllers according to the opening time of the force value control ratio electromagnet B1 of the first pressure transducer 2 and the second pressure transducer 14 and aperture, fluid discharges from accumulator 13, after proportional flow control valve 15, enter the large chamber of boom cylinder, make swing arm increase, this is exergonic process.In this process, the path that flows through flowing into boom cylinder 1 large chamber fluid has two, and one is: the large chamber of accumulator the 13 → four one-way valve 16 → proportional flow control valve 15 → the second one-way valve 11 → boom cylinder 1; Two are: the large chamber of fuel tank 10 → oil hydraulic pump 8 → the first one-way valve 7 → three-position four-way electromagnetic directional valve 6 left position → equilibrium valve 3 → boom cylinder 1; The path that flows through flowing back to fuel tank 10 fluid is: the left position → fuel tank 10 of boom cylinder 1 loculus → three-position four-way electromagnetic directional valve 6; In this process, the pressure energy of the Conversion of Energy related to mainly accumulator 13 inner fluid is converted into the kinetic energy that boom cylinder 1 rises, the electric energy conversion of motor 9 is the kinetic energy of oil hydraulic pump 8 in addition, then is converted into the pressure energy of fluid, finally becomes the kinetic energy that swing arm rises; In this process, the exoergic of accumulator is very capable, and controller limits oil flow by the aperture of control ratio Flow valve 15, thus anti-stopper lever rises too fast.
4. excavator swing arm rises to a certain degree, along with the increase of exoergic time, the releasability of accumulator can weaken to some extent, when value slightly larger than the first pressure transducer 2 of the force value of the second pressure transducer 14, controller control ratio electromagnet B1 dead electricity, close proportional flow control valve 15, the exergonic process of accumulator 13 terminates, and boom cylinder continues to rise to desired location by normal oil hydraulic circuit.In this process, the path that flows through flowing into boom cylinder 1 large chamber fluid is: the large chamber of fuel tank 10 → oil hydraulic pump 8 → the first one-way valve 7 → three-position four-way electromagnetic directional valve 6 left position → equilibrium valve 3 → boom cylinder 1; The path that flows through flowing back to fuel tank 10 fluid is: the left position → fuel tank 10 of boom cylinder 1 loculus → three-position four-way electromagnetic directional valve 6; In this process, the electric energy conversion of the Conversion of Energy related to mainly motor 9 is the kinetic energy of oil hydraulic pump 8, then is converted into the pressure energy of fluid, finally becomes the kinetic energy that swing arm rises.
5., during excavator swing arm transfixion, controller controls the first switch type electromagnet D1 dead electricity, second switch formula electromagnet D2 dead electricity, and three-position four-way electromagnetic directional valve 6 is operated in meta; Controller controls three-switch type electromagnet D3 dead electricity, and 2/2-way solenoid valve 4 cuts out, thus equilibrium valve 3 cuts out; Controller control ratio electromagnet B1 dead electricity, proportional flow control valve is closed; Thus keep boom cylinder 1 not decline because of deadweight, excavator swing arm transfixion.
In each working procedure above-mentioned, the first relief valve 5 plays a part to limit boom cylinder 1 loculus oil pressure; After second relief valve 18 is connected to the first one-way valve 7, plays the effect limiting system dynamic source pressure, protect whole oil supply system; Equilibrium valve 3 has relief function, plays the effect of the large chamber of protection boom cylinder 1 and accumulator 13.
The foregoing is only the example that the present invention applies in excavator, for those skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. an engineering machinery movable arm potential energy luffing energy recycle device, comprise boom cylinder (1), the first pressure transducer (2), the second pressure transducer (14), equilibrium valve (3), 2/2-way solenoid valve (4), the first relief valve (5), the second relief valve (18), three-position four-way electromagnetic directional valve (6), one-way valve, oil hydraulic pump (8), motor (9), fuel tank (10), accumulator (13), proportional flow control valve (15) and controller, it is characterized in that:
Described motor (9) is connected with oil hydraulic pump (8) mechanical transmission; Described oil hydraulic pump (8) filler opening is connected with fuel tank (10), and oil hydraulic pump (8) oil outlet is connected with the first one-way valve (7) filler opening; The P mouth of described three-position four-way electromagnetic directional valve (6) is connected with the first one-way valve (7) oil outlet, the T mouth of three-position four-way electromagnetic directional valve (6) is connected with fuel tank (10), the A mouth of three-position four-way electromagnetic directional valve (6) is connected with the loculus hydraulic fluid port L of boom cylinder (1), and the B mouth of three-position four-way electromagnetic directional valve (6) is connected with the I mouth of equilibrium valve (3); The H mouth of described equilibrium valve (3) is connected with the large chamber hydraulic fluid port M of boom cylinder (1), and the G mouth of equilibrium valve (3) is connected with the F mouth of 2/2-way solenoid valve (4); The E mouth of described 2/2-way solenoid valve (4) is connected with the A mouth of three-position four-way electromagnetic directional valve (6); The filler opening C of described first relief valve (5) is connected with the A mouth of three-position four-way electromagnetic directional valve (6), and the oil outlet D of the first relief valve (5) is connected with the B mouth of three-position four-way electromagnetic directional valve (6); The K hydraulic fluid port of described proportional flow control valve (15) is connected with the filler opening of the second one-way valve (11) with the 3rd one-way valve (12) respectively, and the J hydraulic fluid port of described proportional flow control valve (15) is connected with the oil outlet of the 4th one-way valve (16) with the 5th one-way valve (17) respectively; The filler opening of the oil outlet the respectively with five one-way valve (17) of described second one-way valve (11) is connected with the large chamber hydraulic fluid port M of boom cylinder (1); The oil outlet of described 3rd one-way valve (12) is connected with accumulator (1 (3)) hydraulic fluid port N with the filler opening of the 4th one-way valve (1 (6)) respectively; Described first pressure transducer (2) is connected with the large chamber hydraulic fluid port M of boom cylinder (1); Described second pressure transducer (14) is connected with the hydraulic fluid port N of accumulator (13); The filler opening of described second relief valve (18) is connected with the oil outlet of the first one-way valve (7), and the oil outlet of the second relief valve (18) is connected with fuel tank (10);
Described three-position four-way electromagnetic directional valve (6) has the first switch type electromagnet (D1) and second switch formula electromagnet (D2), described 2/2-way solenoid valve (4) has three-switch type electromagnet (D3), described proportional flow control valve (15) has proportion electro-magnet (B1), and described first switch type electromagnet (D1), second switch formula electromagnet (D2), three-switch type electromagnet (D3) and proportion electro-magnet (B1) be connection control device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055900.0A CN104747544B (en) | 2015-02-04 | 2015-02-04 | Engineering machinery movable arm potential energy variable amplitude energy recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055900.0A CN104747544B (en) | 2015-02-04 | 2015-02-04 | Engineering machinery movable arm potential energy variable amplitude energy recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104747544A true CN104747544A (en) | 2015-07-01 |
| CN104747544B CN104747544B (en) | 2017-01-11 |
Family
ID=53587679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055900.0A Active CN104747544B (en) | 2015-02-04 | 2015-02-04 | Engineering machinery movable arm potential energy variable amplitude energy recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747544B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401607A (en) * | 2015-12-15 | 2016-03-16 | 福建工程学院 | Balanced type movable arm energy-saving system with variable-area hydraulic energy accumulator |
| CN105421510A (en) * | 2015-12-14 | 2016-03-23 | 福建工程学院 | Movable arm energy-saving system adopting variable-diameter balanced hydraulic cylinder |
| CN105604121A (en) * | 2015-12-29 | 2016-05-25 | 太原理工大学 | Control loop of working device of engineering operation equipment |
| CN107061427A (en) * | 2017-01-12 | 2017-08-18 | 临沭县精伦液压件销售有限公司 | A kind of engineering machinery large arm potential energy is reclaimed and release system |
| CN107588150A (en) * | 2017-10-19 | 2018-01-16 | 燕山大学 | Especially big load hydraulic bjuffer |
| CN107605817A (en) * | 2016-07-12 | 2018-01-19 | 天津瀚福精密液压技术有限公司 | Tyre vulcanizer pressurized hydraulic servo-control system |
| CN108533544A (en) * | 2017-02-16 | 2018-09-14 | 数源科技股份有限公司 | A kind of energy-saving upper dress system of pure electric vehicle compression type garbage truck |
| CN110056549A (en) * | 2019-04-03 | 2019-07-26 | 燕山大学 | A kind of the lifting hydraulic cylinder potential energy recovery system and method for automatic control |
| CN113048104A (en) * | 2021-04-22 | 2021-06-29 | 贵州大学 | Energy recovery system of hydraulic load operation platform |
| CN114352586A (en) * | 2022-01-07 | 2022-04-15 | 华侨大学 | Energy-saving type electrically-driven rotary table system of engineering machinery |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09125465A (en) * | 1995-11-02 | 1997-05-13 | Hitachi Constr Mach Co Ltd | Vibration restraint device of hydraulic working machine |
| JPH112212A (en) * | 1997-06-13 | 1999-01-06 | Tokimec Inc | Lift driving device for heavy object |
| CN101225845A (en) * | 2006-11-14 | 2008-07-23 | 胡斯可国际股份有限公司 | Energy recovery and reuse methods for a hydraulic system |
| CN101408213A (en) * | 2008-11-11 | 2009-04-15 | 浙江大学 | Energy recovery system of hybrid power engineering machinery energy accumulator-hydraulic motor |
| CN201661556U (en) * | 2009-12-11 | 2010-12-01 | 三一重工股份有限公司 | Potential energy recovering hydraulic system of concrete pump truck |
| CN202251264U (en) * | 2011-10-08 | 2012-05-30 | 山河智能装备股份有限公司 | Potential energy recycling device for hydraulic excavator |
| CN103148031A (en) * | 2013-03-27 | 2013-06-12 | 南京工业大学 | Energy-saving control system of hydraulic movable arm loop |
| CN103469835A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Excavator oil-liquid hybrid power control system with functions of energy recovery and conversion |
| CN103790196A (en) * | 2014-01-17 | 2014-05-14 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy recycle control device of hydraulic excavator |
-
2015
- 2015-02-04 CN CN201510055900.0A patent/CN104747544B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09125465A (en) * | 1995-11-02 | 1997-05-13 | Hitachi Constr Mach Co Ltd | Vibration restraint device of hydraulic working machine |
| JPH112212A (en) * | 1997-06-13 | 1999-01-06 | Tokimec Inc | Lift driving device for heavy object |
| CN101225845A (en) * | 2006-11-14 | 2008-07-23 | 胡斯可国际股份有限公司 | Energy recovery and reuse methods for a hydraulic system |
| CN101408213A (en) * | 2008-11-11 | 2009-04-15 | 浙江大学 | Energy recovery system of hybrid power engineering machinery energy accumulator-hydraulic motor |
| CN201661556U (en) * | 2009-12-11 | 2010-12-01 | 三一重工股份有限公司 | Potential energy recovering hydraulic system of concrete pump truck |
| CN202251264U (en) * | 2011-10-08 | 2012-05-30 | 山河智能装备股份有限公司 | Potential energy recycling device for hydraulic excavator |
| CN103148031A (en) * | 2013-03-27 | 2013-06-12 | 南京工业大学 | Energy-saving control system of hydraulic movable arm loop |
| CN103469835A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Excavator oil-liquid hybrid power control system with functions of energy recovery and conversion |
| CN103790196A (en) * | 2014-01-17 | 2014-05-14 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy recycle control device of hydraulic excavator |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421510A (en) * | 2015-12-14 | 2016-03-23 | 福建工程学院 | Movable arm energy-saving system adopting variable-diameter balanced hydraulic cylinder |
| CN105401607A (en) * | 2015-12-15 | 2016-03-16 | 福建工程学院 | Balanced type movable arm energy-saving system with variable-area hydraulic energy accumulator |
| CN105604121A (en) * | 2015-12-29 | 2016-05-25 | 太原理工大学 | Control loop of working device of engineering operation equipment |
| CN105604121B (en) * | 2015-12-29 | 2017-09-29 | 太原理工大学 | A kind of control loop of engineer operation armament-related work device |
| CN107605817A (en) * | 2016-07-12 | 2018-01-19 | 天津瀚福精密液压技术有限公司 | Tyre vulcanizer pressurized hydraulic servo-control system |
| CN107061427A (en) * | 2017-01-12 | 2017-08-18 | 临沭县精伦液压件销售有限公司 | A kind of engineering machinery large arm potential energy is reclaimed and release system |
| CN108533544A (en) * | 2017-02-16 | 2018-09-14 | 数源科技股份有限公司 | A kind of energy-saving upper dress system of pure electric vehicle compression type garbage truck |
| CN107588150A (en) * | 2017-10-19 | 2018-01-16 | 燕山大学 | Especially big load hydraulic bjuffer |
| CN110056549A (en) * | 2019-04-03 | 2019-07-26 | 燕山大学 | A kind of the lifting hydraulic cylinder potential energy recovery system and method for automatic control |
| CN110056549B (en) * | 2019-04-03 | 2020-03-13 | 燕山大学 | Automatic control lifting hydraulic cylinder potential energy recovery system and method |
| CN113048104A (en) * | 2021-04-22 | 2021-06-29 | 贵州大学 | Energy recovery system of hydraulic load operation platform |
| CN113048104B (en) * | 2021-04-22 | 2022-07-15 | 贵州大学 | Energy recovery system of hydraulic load operation platform |
| CN114352586A (en) * | 2022-01-07 | 2022-04-15 | 华侨大学 | Energy-saving type electrically-driven rotary table system of engineering machinery |
| CN114352586B (en) * | 2022-01-07 | 2023-05-30 | 华侨大学 | Energy-saving type electric driving turntable system of engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104747544B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104747544A (en) | Engineering machinery movable arm potential energy variable amplitude energy recovery device | |
| CN102912823B (en) | Rotary energy saving system of excavator | |
| CN103148031B (en) | Energy-saving control system of hydraulic movable arm loop | |
| CN101435451B (en) | Movable arm potential energy recovery method and apparatus of hydraulic excavator | |
| CN102561451B (en) | Energy optimization system for hydraulic excavator | |
| CN103924626B (en) | The energy-saving turntable drive system of electric drive hydraulic crawler excavator and drived control method | |
| CN204628112U (en) | A kind of rotary drilling rig master winch transfers potential energy recovery system | |
| CN103339388A (en) | Hydraulic fan circuit having energy recovery | |
| CN102094434A (en) | System for differential recovery of potential energy of boom of oil liquid hybrid power excavating machine | |
| CN102588396A (en) | Oil cylinder energy recovery and regeneration system | |
| CN104832464A (en) | Rotary drilling rig main winch downward placing potential energy recycling device | |
| CN104533863B (en) | Crane rotation system control valve | |
| CN203834553U (en) | Energy-saving rotary table driving system for electrically-driven hydraulic excavator | |
| CN202251264U (en) | Potential energy recycling device for hydraulic excavator | |
| CN103397679A (en) | Movable arm energy-saving control system | |
| CN205618450U (en) | Hydraulic system divides fender energy storage ware energy recuperation device | |
| CN204476899U (en) | A kind of crane rotation system control valve | |
| CN103397677A (en) | Hydraulic excavator movable arm loop based on hydraulic transformer and control method thereof | |
| CN204533066U (en) | A kind of excavator swing arm potential energy hydraulic type energy-recuperation system | |
| CN103790196B (en) | A kind of Hydraulic Excavator's Boom potential energy recovery control device | |
| CN103883576A (en) | Pounder hydraulic system and engineering machinery | |
| CN104912137A (en) | Excavator hydraulic system with energy feedback function | |
| CN204898749U (en) | Excavator hydraulic system with energy repayment function | |
| CN104358749B (en) | Energy recovery and utilization system for movable arm potential energy | |
| CN113048104A (en) | Energy recovery system of hydraulic load operation platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |