CN106284478A - A kind of electric balancing cylinder potential energy recovery system - Google Patents
A kind of electric balancing cylinder potential energy recovery system Download PDFInfo
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- CN106284478A CN106284478A CN201610636067.3A CN201610636067A CN106284478A CN 106284478 A CN106284478 A CN 106284478A CN 201610636067 A CN201610636067 A CN 201610636067A CN 106284478 A CN106284478 A CN 106284478A
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- gear
- reversal valve
- fluid port
- hydraulic fluid
- balancing cylinder
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- 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
Abstract
The invention discloses a kind of electric balancing cylinder potential energy recovery system, on the basis of original swing arm drive system, be additionally arranged balancing cylinder, bidirectional hydraulic pump/motor and dynamoelectric machine；Utilize hydraulic pump, dynamoelectric machine and electrokinetic cell to carry out conversion to store, it is that electric energy stores by the transform gravitational energy of pantograph, or convert electric energy to hydraulic energy driving swing arm rising, the release of electric energy can be controlled by controlling the rotating speed of dynamoelectric machine, and then control the rate of climb of swing arm, it is to avoid the energy release process uncontrolled drawback stored in hydraulic accumulator in fluid pressure type energy storage.The invention provides a kind of electric balancing cylinder potential energy recovery system being applicable to hydraulic crawler excavator, on the basis of not changing the operation structure of original dynamical system, the gravitional force of swing arm stored and discharges, having saved the energy, having the highest economic worth.
Description
Technical field
The present invention relates to a kind of potential energy recovery system, particularly relate to a kind of electric balance being applicable to hydraulic crawler excavator
Oil cylinder potential energy recovery system.
Background technology
Energy-conservation and environmental protection is the global economic development basic demand to energy source device.Hydraulic crawler excavator is a large amount of as a kind of face
Wide engineering machinery, plays an important role at aspects such as urban construction, mining, road constructions.But hydraulic crawler excavator
High energy consumption problem also result in the concern of researcher, and it has been carried out corresponding research.Motor-driven currently for hydraulic excavating
The recovery of arm potential energy, is broadly divided into electric and fluid pressure type two kinds.Wherein electric potential energy recycles is to drive oil
The rodless cavity of cylinder changes into electric energy by hydraulic motor-electromotor and realizes, and the speed that swing arm is transferred is by hydraulic motor and tune
Speed valve complex controll.Although having obtained preferable solution handling at present, but potential energy recycling and reuse not being same
Approach, all of movable arm potential energy all passes through from potential energy-driving oil cylinder-hydraulic control valve-hydraulic motor-electromotor-battery/electricity
The multiple energy of appearance-electromotor-hydraulic pump-hydraulic control valve-driving oil cylinder etc. converts, and in system, energy conversion links is more,
Have impact on the energy recovery efficiency of system.Fluid pressure type energy regenerating main element is hydraulic accumulator, because hydraulic accumulator has
Power density is big, reclaim/release energy speed is fast and the advantage such as energy storage time length and become research focus.But employing hydraulic pressure
Accumulator directly reclaims and has the disadvantage that 1 with regeneration) only could store up when external pressure is higher than pressure in hydraulic accumulator
Can, and only when in accumulator pressure higher than its external pressure time could regenerate, and store up, exergonic process can not affect actuator
Operation characteristic；2) in removal process, the pressure of hydraulic accumulator can gradually rise, and can cause executor's speed control valve two
The pressure reduction of end changes, and this will necessarily affect the handling of executor；3) swing arm executor desirable pressure when drive pattern
General again more than desirable pressure during take-back model, the pressure of hydraulic accumulator is difficult to directly discharge.
Currently also there is employing balancing cylinder to reclaim the scheme of movable arm potential energy, owing to the motion of balancing cylinder is straight line fortune
Dynamic, and the main element of electric energy regenerating is motor, can only be by the side of balancing cylinder-electromotor-electricity energy-storage units
Method, but movable arm potential energy recycles the multiple conversions having to pass through energy, reduces energy recovery and reuse efficiency.Cause
When this typically carries out energy regenerating to the swing arm having balancing unit, general use hydraulic accumulator as energy storage units, this
Certainly exist and utilize above shortcomings after accumulator.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art, it is provided that a kind of electric being applicable to hydraulic crawler excavator is put down
Weighing apparatus oil cylinder potential energy recovery system, on the basis of not changing the operation structure of original dynamical system, enters the gravitional force of swing arm
Row storage and release, saved the energy, had the highest economic worth.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electric balancing cylinder potential energy reclaims system
System, including driving motor, hydraulic pump and former driving oil cylinder, described former driving oil cylinder is secured to the pantograph of engineering machinery, should
Former driving oil cylinder has rod chamber and rodless cavity；
Also include balancing cylinder, controller, bidirectional hydraulic pump/motor, dynamoelectric machine and electrokinetic cell, described balance
Oil cylinder is secured to described pantograph, has certain intervals, be symmetrically arranged between described balancing cylinder and described former driving oil cylinder
Pantograph both sides；The outfan of described bidirectional hydraulic pump/motor interlocks mutually with described dynamoelectric machine, described electronic/generating
Machine electrically connects with described electrokinetic cell；Described balancing cylinder includes rod chamber and rodless cavity, the rod chamber of described balancing cylinder with
Described first reversal valve is connected, and the rodless cavity of described balancing cylinder is connected with described second reversal valve, described first commutation
Valve and the second reversal valve are respectively equipped with forward gear and reverse gear；Described controller controls described first reversal valve and second and changes
To Vavle switching gear；
When described first reversal valve is in forward gear, the rod chamber of balancing cylinder passes through described bidirectional hydraulic pump/horse
Fuel tank it is back to, when described first reversal valve is in reverse gear, and the rod chamber of balancing cylinder is back to fuel tank after reaching；When described
When second reversal valve is in forward gear, the rodless cavity of balancing cylinder is back to fuel tank by after described bidirectional hydraulic pump/motor,
When described second reversal valve is in reverse gear, and the rodless cavity of balancing cylinder is back to fuel tank.
Preferred as one, also include that banked direction control valves, described banked direction control valves are provided with A hydraulic fluid port, B hydraulic fluid port, P hydraulic fluid port and T hydraulic fluid port, described
The rodless cavity of former driving oil cylinder is connected with described A hydraulic fluid port, and the rod chamber of described former driving oil cylinder is connected with described B hydraulic fluid port,
Hydraulic pump is connected with described P hydraulic fluid port；Described banked direction control valves is provided with forward gear and reverse gear；
When described banked direction control valves is positioned at forward gear, described A hydraulic fluid port connects with T hydraulic fluid port and is back to fuel tank, and described B hydraulic fluid port leads to
Cross described hydraulic pump and be back to fuel tank；When described banked direction control valves is positioned at reverse gear, described A hydraulic fluid port connection T hydraulic fluid port is back to oil
Case, described B hydraulic fluid port connects fuel tank.
Preferred as one, described banked direction control valves is additionally provided with and blocks gear, when described banked direction control valves is positioned at and blocks gear, described
A hydraulic fluid port and described B hydraulic fluid port are in the state of blocking, and described P hydraulic fluid port is connected to fuel tank.
Preferred as one, described hydraulic pump attaching has overflow valve.
Preferred as one, described banked direction control valves controls switching by described controller.
Preferred as one, described first reversal valve is provided with and blocks gear, blocks gear when described first reversal valve is in
Time, these the first reversal valve two ends cannot turn on.
Preferred as one, described second reversal valve is provided with and blocks gear, blocks gear when described second reversal valve is in
Time, these the second reversal valve two ends cannot turn on.
Preferred as one, also include power operation handle, this power operation handle is described by the switching of described controller
First reversal valve and the second reversal valve；Described power operation handle is provided with rising gear, middle position gear and transfers gear；When described
When power operation handle is in rising gear and transfers gear, described first reversal valve switches to reverse gear, and described second changes
To Vavle switching to forward gear；When described power operation handle is in middle position gear, described first reversal valve switches to forward
Gear, described second reversal valve switches to reverse gear.
Described power operation handle switches described banked direction control valves by described controller；When described power operation handle is in
When rising gear, described banked direction control valves is in forward gear；When described power operation handle is in and transfers gear, at described banked direction control valves
In reverse gear；When described power operation handle is in middle position gear, described banked direction control valves is in and blocks gear.
Preferred as one, also include pressure transducer, described power operation handle will control by two pressure transducers
Signal processed conduction is to described controller.
Preferred as one, described first reversal valve, the second reversal valve are electromagnetic valve；Two ends of described banked direction control valves are provided with elder generation
Oil Guide road, described controller controls described banked direction control valves switching gear by this guide's oil circuit.
Use technique scheme, the method have the advantages that
Patent of the present invention, on the basis of original dynamical system, is additionally arranged balancing cylinder independent to share former driving oil cylinder
Undertake the driving force of pantograph, be equivalent to one the less load of former driving hydraulic oil cylinder driving, this reduces hydraulic pump
Power exports, thus advantageously reduces energy expenditure；Meanwhile, bidirectional hydraulic pump/motor, dynamoelectric machine and power current are utilized
Pond carries out conversion and stores, and is that electric energy stores by the transform gravitational energy of pantograph, or converts electric energy to hydraulic energy and drive
Dynamic swing arm rises, and can control the release of electric energy by controlling the rotating speed of dynamoelectric machine, and then control the upper raising speed of swing arm
Degree, it is to avoid the energy release process uncontrolled drawback stored in hydraulic accumulator in fluid pressure type energy storage；When being in excavation
During operating mode, owing to the displacement of now boom cylinder is the least, i.e. necessary flow is little but pressure big, now can make having of balancing cylinder
Bar chamber is connected to hydraulic pump, makes the output of bidirectional hydraulic pump/motor and operating mode match by controlling the rotating speed of dynamoelectric machine
Flow, such that it is able to make driving motor idling work, reduces energy expenditure.Due to energy regenerating passage and energy release channel phase
With, decrease energy conversion links.Balancing cylinder and hydraulic pump and the addition of dynamoelectric machine, can not only enter movable arm potential energy
Row recycles, and in the process, and former swing arm handling constant.
Below in conjunction with drawings and Examples, the present invention is described in further detail；But a kind of electric of the present invention balances
Oil cylinder potential energy recovery system is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the present invention；
Fig. 2 is that the swing arm of the present invention declines the principle schematic that energy recycles；
Fig. 3 is the principle schematic of the swing arm elevation energy recycling of the present invention；
Fig. 4 is the principle schematic excavating energy recycling of the present invention；
Wherein: 1-drives motor；2-hydraulic pump；3-overflow valve；4-banked direction control valves；5-controller；6-swing arm operation handle；7-
Former driving oil cylinder, the rodless cavity of 71-former driving oil cylinder, the rod chamber of 72-former driving oil cylinder；8-balancing cylinder, 81-balancing cylinder
Rodless cavity, the rod chamber of 82-balancing cylinder；9-pantograph；10-the first reversal valve；11-the second reversal valve；The two-way liquid of 12-
Pressure pump/motor；13-dynamoelectric machine；14-electrokinetic cell；15, the first pressure transducer；16, the second pressure transducer.
Detailed description of the invention
Embodiment:
Shown in Figure 1, a kind of electric balancing cylinder 8 potential energy recovery system of the present invention, including driving motor 1, liquid
Press pump 2 and former driving oil cylinder 7, described former driving oil cylinder 7 is secured to the pantograph 9 of engineering machinery, and this former driving oil cylinder 7 has
Rod chamber 72 and rodless cavity 71；
Also include balancing cylinder 8, controller 5, bidirectional hydraulic pump/motor 12, dynamoelectric machine 13 and electrokinetic cell 14,
Described balancing cylinder 8 is secured to described pantograph 9, between having between described balancing cylinder 8 and described former driving oil cylinder 7 necessarily
Every, it is symmetrically arranged in pantograph 9 both sides；The outfan of described bidirectional hydraulic pump/motor 12 and described dynamoelectric machine 13 phase
Interlocking, described dynamoelectric machine 13 electrically connects with described electrokinetic cell 14；Described balancing cylinder 8 includes rod chamber 82 and without bar
Chamber 81, the rod chamber 82 of described balancing cylinder 8 is connected with described first reversal valve 10, the rodless cavity 81 of described balancing cylinder 8
Being connected with described second reversal valve 11, described first reversal valve 10 and the second reversal valve 11 are respectively equipped with forward gear with reverse
Gear；Described controller 5 controls described first reversal valve 10 and the second reversal valve 11 switches gear；
When described first reversal valve 10 is in forward gear, the rod chamber 82 of balancing cylinder 8 is by described bidirectional hydraulic
It is back to fuel tank, when described first reversal valve 10 is in reverse gear, and the rod chamber 82 of balancing cylinder 8 refluxes after pump/motor 12
To fuel tank；When described second reversal valve 11 is in forward gear, the rodless cavity 81 of balancing cylinder 8 is by described bidirectional hydraulic
It is back to fuel tank, when described second reversal valve 11 is in reverse gear, and the rodless cavity 81 of balancing cylinder 8 refluxes after pump/motor 12
To fuel tank.
Described dynamoelectric machine 13 is the machinery having generator function and motor function concurrently.Described electrokinetic cell
14 is ultracapacitor battery.Described controller 5 can be the control dress that single-chip microcomputer, PLC etc. can control electromagnetic valve switching
Put.
Also include that banked direction control valves 4, described banked direction control valves 4 are provided with A hydraulic fluid port, B hydraulic fluid port, P hydraulic fluid port and T hydraulic fluid port, described former driving oil cylinder 7
Rodless cavity 71 be connected with described A hydraulic fluid port, the rod chamber 72 of described former driving oil cylinder 7 is connected with described B hydraulic fluid port, hydraulic pump
2 are connected with described P hydraulic fluid port；Described banked direction control valves 4 is provided with forward gear and reverse gear；
When described banked direction control valves 4 is positioned at forward gear, described A hydraulic fluid port connection T hydraulic fluid port is back to fuel tank, and described B hydraulic fluid port leads to
Cross described hydraulic pump 2 and be back to fuel tank；When described banked direction control valves 4 is positioned at reverse gear, described A hydraulic fluid port connection T hydraulic fluid port is back to
Fuel tank, described B hydraulic fluid port connects fuel tank.
Described banked direction control valves 4 is additionally provided with and blocks gear, when described banked direction control valves 4 is positioned at and blocks gear, and described A hydraulic fluid port and described
B hydraulic fluid port is in the state of blocking, and described P hydraulic fluid port is connected to fuel tank.
The attaching of described hydraulic pump 2 has overflow valve 3.
Described banked direction control valves 4 controls switching by described controller 5.
Described first reversal valve 10 is provided with and blocks gear, and when described first reversal valve 10 is in and blocks gear, this is first years old
Reversal valve 10 two ends cannot turn on.
Described second reversal valve 11 is provided with and blocks gear, and when described second reversal valve 11 is in and blocks gear, this is second years old
Reversal valve 11 two ends cannot turn on.
Also including power operation handle, this power operation handle switches described first reversal valve 10 by described controller 5
With the second reversal valve 11；Described power operation handle is provided with rising gear, middle position gear and transfers gear；When described power operation
When handle is in rising gear and transfers gear, described first reversal valve 10 switches to reverse gear, described second reversal valve 11
Switch to forward gear；When described power operation handle is in middle position gear, described first reversal valve 10 switches to forward shelves
Position, described second reversal valve 11 switches to reverse gear.
Described power operation handle switches described banked direction control valves 4 by described controller 5；When described power operation handle is in
When rising gear, described banked direction control valves 4 is in forward gear；When described power operation handle is in and transfers gear, described multichannel
Valve 4 is in reverse gear；When described power operation handle is in middle position gear, described banked direction control valves 4 is in and blocks gear.
Also including pressure transducer, control signal is conducted to institute by described power operation handle by two pressure transducers
State controller 5.
Two ends of two ends of described first reversal valve 10, two ends of the second reversal valve 11 and banked direction control valves 4 are respectively equipped with electromagnetism
Valve, described controller 5 controls described first reversal valve the 10, second reversal valve 11 by this electromagnetic valve and banked direction control valves 4 switches gear.
In Fig. 1, described first reversal valve 10 is followed successively by forward gear, cut-off gear and reverse gear from top to bottom；Described
Second reversal valve 11 is followed successively by forward gear, cut-off gear and reverse gear from top to bottom；Described banked direction control valves 4 is the most successively
For forward gear, cut-off gear and reverse gear.
(1) swing arm decline energy regenerating:
Shown in Figure 2, hydraulic oil arrow direction along figure is moved, when swing arm operation handle 6 is in sign swing arm
When transferring gear, controller 5 output signal makes described banked direction control valves 4 switch to reverse gear, and described first reversal valve 10 is positioned at instead
To gear, described second reversal valve 11 is positioned at forward gear.Now, the A hydraulic fluid port of banked direction control valves 4 is connected with fuel tank, B hydraulic fluid port and P
Hydraulic fluid port is connected；The A hydraulic fluid port of the first reversal valve 10 is connected with fuel tank, and the A hydraulic fluid port of the second reversal valve 11 is connected with P hydraulic fluid port.
Driving motor 1 to drive described hydraulic pump 2 by fuel tank extract force feed, hydraulic oil passes sequentially through, former driving oil cylinder 7
Rod chamber 72, compress former driving oil cylinder 7 and the rodless cavity 71 of former driving oil cylinder 7, and be back to fuel tank by banked direction control valves 4；Swing arm
Under the drive of former driving oil cylinder 7, position declines.Meanwhile, balancing cylinder 8 phase strain stretch, owing to the potential energy of swing arm discharges, hydraulic pressure
Oil passes sequentially through, and rodless cavity 81, second reversal valve 11 of balancing cylinder 8 and bidirectional hydraulic pump/motor 12, in the driving of oil pressure
Under, potential energy is converted to electric energy by the first motor by bidirectional hydraulic pump/motor 12, and is stored into described electronic battery；At liquid
While force feed flows out the rodless cavity 81 of balancing cylinder 8, hydraulic oil enters balancing cylinder 8 from fuel tank by the first reversal valve 10
Rod chamber 82, in case being emptied in balancing cylinder 8, produces air pocket.
(2) swing arm elevation energy recycling:
Shown in Figure 3, hydraulic oil arrow direction along figure is moved, when swing arm operation handle 6 is in sign swing arm
When rising gear, controller 5 output signal makes described banked direction control valves 4 be positioned at forward gear, and described first reversal valve 10 is positioned at reversely
Gear, described second reversal valve 11 is positioned at forward gear.Now, the A hydraulic fluid port of banked direction control valves 4 is connected with P hydraulic fluid port, B hydraulic fluid port and oil
Case is connected；The A hydraulic fluid port of the first reversal valve 10 is connected with fuel tank, and the A hydraulic fluid port of the second reversal valve 11 is connected with P hydraulic fluid port.
Driving motor 1 to drive described hydraulic pump 2 by fuel tank extract force feed, hydraulic oil passes sequentially through, former driving oil cylinder 7
Rodless cavity 71, former driving oil cylinder 7 and the rod chamber 72 of former driving oil cylinder 7, and it is back to fuel tank；Swing arm is at former driving oil cylinder 7
Under drive, position rises.Meanwhile, dynamoelectric machine 13 works under the driving of electronic battery, and drives bidirectional hydraulic pump/horse
Reach 12 to be passed sequentially through by extract force feed in fuel tank, hydraulic oil, the second reversal valve 11, the rodless cavity 81 of balancing cylinder 8, equilibrium oil
Cylinder 8, the rod chamber 82 of balancing cylinder 8 and the first reversal valve 10, and it is back to fuel tank；Former driving oil cylinder 7 is formed with balancing cylinder 8
Couple of force closes, and is i.e. equivalent to former driving oil cylinder 7 and drives a load less than actual loading.Former driving oil cylinder 7 and balancing cylinder 8
Distribute according to its effective active area and pressure undertaken to weight/power ratio.
(3) excavate energy to recycle:
Shown in Figure 4, hydraulic oil arrow direction along figure is moved, when swing arm operation handle 6 is in middle position gear,
Controller 5 output signal makes described banked direction control valves 4 switch to block gear, and described first reversal valve 10 is positioned at forward gear, described
Second reversal valve 11 is positioned at reverse gear.Now, the A hydraulic fluid port of banked direction control valves 4, B hydraulic fluid port block, and P hydraulic fluid port is connected with fuel tank；First
The A hydraulic fluid port of reversal valve 10 is connected with P hydraulic fluid port, and the A hydraulic fluid port of the second reversal valve 11 is connected with fuel tank.
When excavator is in mining mode, the displacement of former driving oil cylinder 7 is the least, however it is necessary that bigger pressure produces
Enough digging forces, in original swing arm drive system, substantial amounts of hydraulic oil needs through overflow valve 3 oil sump tank, causes the biggest
Energy loss.In the system shown in the present invention, the hydraulic oil of hydraulic pump 2 output unloads by being communicated to fuel tank after banked direction control valves 4
Lotus, thus reduce the power output of hydraulic pump；Meanwhile, under the driving of electrokinetic cell 14, described bidirectional hydraulic pump/motor 12 by
Extract force feed in fuel tank, hydraulic oil passes sequentially through the first reversal valve 10, the rod chamber 82 of balancing cylinder 8, balancing cylinder 8, puts down
The rodless cavity 81 of weighing apparatus oil cylinder 8 and the second reversal valve 11, be then back to fuel tank.Owing to need not the highest stream when being in excavation
Amount, therefore can make driving motor 1 be in idling work to reduce energy loss, hydraulic pump by the direct oil sump tank of banked direction control valves 4,
Overflow is avoided to be lost；Digging force only provides by bidirectional hydraulic pump/motor 12 and dynamoelectric machine 13.
When mining mode, owing to balancing cylinder 8 provides the active force needed for excavation, hydraulic pump 2 is made directly to be linked back oil
Case, it is to avoid substantial amounts of spill losses, improves the utilization rate of energy.And during secondary, it is stored in electrokinetic cell 14
Electric energy release channel and energy regenerating passage and swing arm energy recycling passage when rising consistent, decrease energy and change
Link, simplifies system structure.
Above-described embodiment is only for further illustrating a kind of electric balancing cylinder potential energy recovery system of the present invention, but basis
Invention is not limited to embodiment, every above example is made according to the technical spirit of the present invention any simple modification,
Equivalent variations and modification, each fall within the protection domain of technical solution of the present invention.
Claims (9)
1. an electric balancing cylinder potential energy recovery system, including driving motor, hydraulic pump and former driving oil cylinder, described former drives
Dynamic oil cylinder is secured to the pantograph of engineering machinery, and this former driving oil cylinder has rod chamber and rodless cavity；It is characterized in that:
Also include balancing cylinder, controller, bidirectional hydraulic pump/motor, dynamoelectric machine and electrokinetic cell, described balancing cylinder
It is secured to described pantograph, between described balancing cylinder and described former driving oil cylinder, there is certain intervals, be symmetrically arranged in swing arm
Device both sides；The outfan of described bidirectional hydraulic pump/motor interlocks mutually with described dynamoelectric machine, described dynamoelectric machine with
Described electrokinetic cell electrically connects；Described balancing cylinder includes rod chamber and rodless cavity, and the rod chamber of described balancing cylinder is with described
First reversal valve is connected, and the rodless cavity of described balancing cylinder is connected with described second reversal valve, described first reversal valve and
Second reversal valve is respectively equipped with forward gear and reverse gear；Described controller controls described first reversal valve and the second reversal valve
Switching gear；
When described first reversal valve is in forward gear, the rod chamber of balancing cylinder is by after described bidirectional hydraulic pump/motor
It is back to fuel tank, when described first reversal valve is in reverse gear, and the rod chamber of balancing cylinder is back to fuel tank；When described second
When reversal valve is in forward gear, the rodless cavity of balancing cylinder is back to fuel tank by after described bidirectional hydraulic pump/motor, works as institute
Stating the second reversal valve and be in reverse gear, the rodless cavity of balancing cylinder is back to fuel tank.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 1, it is characterised in that: also include multichannel
Valve, described banked direction control valves is provided with A hydraulic fluid port, B hydraulic fluid port, P hydraulic fluid port and T hydraulic fluid port, the rodless cavity of described former driving oil cylinder and described A hydraulic fluid port phase
Connecting, the rod chamber of described former driving oil cylinder is connected with described B hydraulic fluid port, and hydraulic pump is connected with described P hydraulic fluid port；Described multichannel
Valve is provided with forward gear and reverse gear；
When described banked direction control valves is positioned at forward gear, described A hydraulic fluid port connects with P hydraulic fluid port, and described B hydraulic fluid port connects backflow with T hydraulic fluid port
To fuel tank；When described banked direction control valves is positioned at reverse gear, described A hydraulic fluid port connects with T hydraulic fluid port and is back to fuel tank, described B hydraulic fluid port and P
Hydraulic fluid port connects.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 2, it is characterised in that: described banked direction control valves
Being additionally provided with and block gear, when described banked direction control valves is positioned at and blocks gear, described A hydraulic fluid port and described B hydraulic fluid port are in the state of blocking,
Described P hydraulic fluid port is connected to fuel tank.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 1, it is characterised in that: described hydraulic pump
Attaching has overflow valve.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 2, it is characterised in that: described banked direction control valves
Switching is controlled by described controller.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 1, it is characterised in that: described first changes
Being provided with to valve and block gear, when described first reversal valve is in and blocks gear, these the first reversal valve two ends cannot turn on.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 1, it is characterised in that: described second changes
Being provided with to valve and block gear, when described second reversal valve is in and blocks gear, these the second reversal valve two ends cannot turn on.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 1, it is characterised in that: also include power
Operation handle, this power operation handle switches described first reversal valve and the second reversal valve by described controller；Described power
Operation handle is provided with rising gear, middle position gear and transfers gear；When described power operation handle is in rising gear and transfers
During gear, described first reversal valve switches to reverse gear, and described second reversal valve switches to forward gear；When described power is grasped
When handle is in middle position gear, described first reversal valve switches to forward gear, and described second reversal valve switches to reverse shelves
Position.
A kind of electric balancing cylinder potential energy recovery system the most according to claim 8, it is characterised in that: also include pressure
Sensor, control signal is conducted to described controller by described power operation handle by two pressure transducers.
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| CN201610636067.3A CN106284478B (en) | 2016-08-05 | 2016-08-05 | A kind of electric balancing cylinder potential energy recovery system |
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| CN201610636067.3A CN106284478B (en) | 2016-08-05 | 2016-08-05 | A kind of electric balancing cylinder potential energy recovery system |
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Cited By (8)
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| CN107420384A (en) * | 2017-09-15 | 2017-12-01 | 太原理工大学 | Lifting device gravitional force P-V storage system |
| CN108180188A (en) * | 2018-01-04 | 2018-06-19 | 徐州工业职业技术学院 | A kind of engineering machinery movable arm potential energy recycle and reuse electrohydraulic control system |
| CN108223499A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | A kind of motor-direct-drive type swing arm energy-recuperation system |
| CN108975235A (en) * | 2017-05-31 | 2018-12-11 | 辰泰融资租赁（上海）有限公司 | Lifting device dynamical system and its control method |
| CN109113120A (en) * | 2018-09-07 | 2019-01-01 | 华侨大学 | A kind of electric-hydraulic combined swing arm energy recycling system |
| WO2021035477A1 (en) * | 2019-08-26 | 2021-03-04 | Guangxi Liugong Machinery Co., Ltd. | Electric excavator |
| CN113027722A (en) * | 2021-04-30 | 2021-06-25 | 北京航空航天大学 | Multi-mode hydraulic energy and electric energy bidirectional energy conversion device and method |
| CN114215829A (en) * | 2021-12-09 | 2022-03-22 | 中联重科土方机械有限公司 | Movable arm potential energy recovery system for engineering equipment and engineering equipment |
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| CN108975235B (en) * | 2017-05-31 | 2020-11-06 | 北谷电子有限公司 | Power system of lifting device and control method thereof |
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| CN107420384B (en) * | 2017-09-15 | 2019-04-30 | 太原理工大学 | System is used in the storage of lifting device gravitional force P-V |
| CN108180188A (en) * | 2018-01-04 | 2018-06-19 | 徐州工业职业技术学院 | A kind of engineering machinery movable arm potential energy recycle and reuse electrohydraulic control system |
| CN108223499A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | A kind of motor-direct-drive type swing arm energy-recuperation system |
| CN109113120A (en) * | 2018-09-07 | 2019-01-01 | 华侨大学 | A kind of electric-hydraulic combined swing arm energy recycling system |
| WO2021035477A1 (en) * | 2019-08-26 | 2021-03-04 | Guangxi Liugong Machinery Co., Ltd. | Electric excavator |
| CN113027722A (en) * | 2021-04-30 | 2021-06-25 | 北京航空航天大学 | Multi-mode hydraulic energy and electric energy bidirectional energy conversion device and method |
| CN114215829A (en) * | 2021-12-09 | 2022-03-22 | 中联重科土方机械有限公司 | Movable arm potential energy recovery system for engineering equipment and engineering equipment |
| CN114215829B (en) * | 2021-12-09 | 2024-03-22 | 中联重科土方机械有限公司 | Swing arm potential energy recovery system for engineering equipment and engineering equipment |
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