CN106400874A - Energy accumulator based excavator rotating mechanism energy recovery system and method - Google Patents
Energy accumulator based excavator rotating mechanism energy recovery system and method Download PDFInfo
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- CN106400874A CN106400874A CN201610903184.1A CN201610903184A CN106400874A CN 106400874 A CN106400874 A CN 106400874A CN 201610903184 A CN201610903184 A CN 201610903184A CN 106400874 A CN106400874 A CN 106400874A
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- energy
- reversal valve
- rotating mechanism
- pipeline
- dredger
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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
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- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention belongs to the field of engineering machinery and discloses energy accumulator based excavator rotating mechanism energy recovery system and method. The energy accumulator based excavator rotating mechanism energy recovery system comprises an oil tank, a variable pump, a first reversing valve and a hydraulic motor which are sequentially connected with one another through a pipeline; a first oil path and a second oil path are connected between the first reversing valve and the hydraulic motor; the output end of the hydraulic motor is connected with a rotating mechanism and a damping mechanism in a drive manner; an energy accumulation pipeline is also connected on a pipeline between the variable pump and the first reversing valve and is connected with a hydraulic energy accumulator; the first oil path is connected with a second reversing valve; the second oil path is connected with a third reversing valve; and the energy accumulation pipeline communicates with the second reversing valve and the third reversing valve through pipelines separately. As braking energy of the excavator rotating mechanism is recovered and recycled, the energy accumulator-based excavator rotating mechanism energy recovery system and method have important significance of studying energy conservation of the excavator rotating mechanism.
Description
Technical field
The present invention relates to engineering machinery field, more particularly, to a kind of rotating mechanism of dredger energy regenerating based on accumulator
System and method.
Background technology
Hydraulic crawler excavator as a kind of restoration in earth-rock construction machinery, with its economical, efficient the advantages of national basis build in
Play a very important role, the earth volume that there are about 65%-70% in the world in various earth and rock workses is completed by excavator.
Due to excavator many in load frequent big ups and downs and operation under the complicated adverse circumstances of operating mode, certainly will bring and start
Machine fuel utilization ratio is low, exhaust emissions is poor, Hydraulic System Fever the problems such as, with a large amount of uses of excavator, these problems heal
Benefit displays.According to statistics, the capacity usage ratio of excavator only has 15%-25%, the loss of energy finally many with heat energy
Form loss, in the fault of engineering machinery, about 15% be derived from mechanical system, 40% be derived from hydraulic system.Research excavator
Energy-conservation not only has positive meaning to environmental conservation and energy shortage problem, concurrently facilitates the heating problem of relieving hydraulic system
And improve reliability and the working life of excavator hydraulic system, reduce the manufacture of excavator to a certain extent and safeguard into
This.
In a cycle of operation of hydraulic crawler excavator, movement time accounts for 50%-70% to slew gear, and energy expenditure is about
Account for 25%-40%, caloric value accounts for 35%-40%.Therefore significant to the energy saving research of slew gear.
Content of the invention
The present invention provides a kind of rotating mechanism of dredger energy-recuperation system based on accumulator and method, and excavator is returned
The braking energy of rotation mechanism is reclaimed and is recycled, and has important meaning to the energy saving research of rotating mechanism of dredger
Justice.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that：
Technical scheme one：
A kind of rotating mechanism of dredger energy-recuperation system based on accumulator, including the oil being sequentially connected by pipeline
Case, variable pump, the first reversal valve, hydraulic motor, are connected with the first oil circuit between described first reversal valve and described hydraulic motor
With the second oil circuit, on the outfan of described hydraulic motor, drive connection has slew gear and damping mechanism,
Accumulation of energy pipeline is also associated with the pipeline between described variable pump and described first reversal valve, on described accumulation of energy pipeline
It is connected with hydraulic accumulator, described first oil circuit is connected with the second reversal valve, described second oil circuit is connected with the 3rd commutation
Valve, described accumulation of energy pipeline passes through pipeline connection with described second reversal valve and described 3rd reversal valve respectively.
The feature of technical solution of the present invention one and being further improved to：
(1) on described second reversal valve and described 3rd reversal valve, all there is oil-in, oil-out and oil return opening, described
Oil-in on two reversal valves and described 3rd reversal valve is connected by pipeline with described first reversal valve respectively, and described second changes
It is connected with a port on described hydraulic motor to the oil-out on valve by described first oil circuit, on described 3rd reversal valve
Oil-out be connected with another port on described hydraulic motor by described second oil circuit；Described second reversal valve and described
Oil return opening on 3rd reversal valve respectively pass through pipeline simultaneously with described accumulation of energy pipeline connection.
(2) accumulation of energy valve is connected with described accumulation of energy pipeline, described accumulation of energy valve is connected to described hydraulic accumulator and institute
State between the outlet of variable pump, the oil return opening on the oil return opening on described second reversal valve and described 3rd reversal valve passes through pipeline
It is connected between described accumulation of energy valve and the described hydraulic accumulator on described accumulation of energy pipeline.(3) described second reversal valve return
It is respectively arranged with check valve on the pipeline that hydraulic fluid port is connected with described accumulation of energy pipeline with the oil return opening of described 3rd reversal valve, two
The conducting direction of described check valve is respectively facing described accumulation of energy pipeline.
(4) speed probe and rotating speed acceleration sensor are provided with the rotating shaft of described slew gear.
Technical scheme two:
A kind of rotating mechanism of dredger energy reclaiming method based on accumulator, methods described is applied to technical scheme one institute
The rotating mechanism of dredger energy-recuperation system based on accumulator stated, methods described comprises the steps：
Step 1, when rotating mechanism of dredger starts braking, produces braking in described rotating mechanism of dredger braking procedure
Energy, described braking energy is sent to hydraulic accumulator by the oil return opening of the second reversal valve and the 3rd reversal valve and is reclaimed
Storage；When the braking of described rotating mechanism of dredger completes, hydraulic accumulator completes the recovery of braking energy；Described braking energy
Including at least rotational kinetic energy and frictional heat energy；
Step 2, when described rotating mechanism of dredger reverse starting, the braking energy of recovery is entered by described hydraulic accumulator
Row release, so that described rotating mechanism of dredger reversely accelerates to start.
What the present invention produced has the beneficial effect that：(1) add hydraulic accumulator in conventional excavators slew gear, establish
Based on accumulator energy-recuperation system；(2) this invention has effectively been reclaimed during hydraulic crawler excavator rotary braking with heat energy shape
The rotational kinetic energy of formula loss, thus not only energy saving and the oil temperature reducing hydraulic system, also improves the reliability of equipment simultaneously
And service life.Secondly, this energy-saving scheme not only can be generalized to other model hydraulic crawler excavators, and this is also the work of correlation type
Journey machinery provides reference.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is conventional excavators slew gear Hydraulic System Simulation model schematic provided in an embodiment of the present invention；
Fig. 2 is the emulation mould of the rotating mechanism of dredger energy-recuperation system based on accumulator provided in an embodiment of the present invention
Type schematic diagram；
Fig. 3 is that the rotating mechanism of dredger energy reclaiming method flow process based on accumulator provided in an embodiment of the present invention is illustrated
Figure；
Fig. 4 is deboost phase rotating speed correlation curve schematic diagram provided in an embodiment of the present invention；
Fig. 5 is boost phase rotating speed correlation curve schematic diagram provided in an embodiment of the present invention；
Fig. 6 is hydraulic accumulator gas volume provided in an embodiment of the present invention and pressure change schematic diagram；
Fig. 7 is three position four-way directional control valve provided in an embodiment of the present invention and two-bit triplet commutation valve control signal schematic diagram；
Fig. 8 releases energy control signal schematic diagram for accumulator provided in an embodiment of the present invention；
Fig. 9 is that the rotating speed correlation curve of slew gear reversion during hydraulic accumulator energy supply provided in an embodiment of the present invention is illustrated
Figure；
Figure 10 is that the change of flow and filled volume when hydraulic accumulator provided in an embodiment of the present invention releases energy is illustrated
Figure.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides a kind of rotating mechanism of dredger energy-recuperation system based on accumulator, exemplary,
As shown in figure 1, being conventional excavators slew gear Hydraulic System Simulation model schematic, including：Variable pump 1, motor 2, three
Position and four-way reversing valve 3, check valve 4, overflow valve 5, motor 6 and slew gear 7 and damping mechanism 8.
As shown in Fig. 2 the rotating mechanism of dredger energy-recuperation system bag based on accumulator provided in an embodiment of the present invention
Include the fuel tank D being sequentially connected by pipeline, variable pump 1, the first reversal valve 3, hydraulic motor 6, described first reversal valve 3 with described
It is connected with the first oil circuit and the second oil circuit, on the outfan of described hydraulic motor 6, drive connection has turn-around machine between hydraulic motor 6
Structure 7 and damping mechanism 8, the pipeline between described variable pump 1 and described first reversal valve 3 is also associated with accumulation of energy pipeline, described
Hydraulic accumulator B is connected with accumulation of energy pipeline, described first oil circuit is connected with the second reversal valve E2, described second oil circuit connects
It is connected to the 3rd reversal valve E3, described accumulation of energy pipeline passes through pipeline with described second reversal valve E2 and described 3rd reversal valve E3 respectively
Connection.
Further, described second reversal valve E2 and described 3rd reversal valve E3 has oil-in, oil-out and return
Hydraulic fluid port, the oil-in on described second reversal valve E2 and described 3rd reversal valve E3 passes through pipe with described first reversal valve 3 respectively
Road connects, and the oil-out on described second reversal valve E2 is by a port on described first oil circuit and described hydraulic motor 6
Connect, the oil-out on described 3rd reversal valve E3 passes through another port on described second oil circuit and described hydraulic motor 6
Connect；Oil return opening on described second reversal valve E2 and described 3rd reversal valve E3 respectively pass through pipeline simultaneously with described accumulation of energy pipe
Road connects.
Further, described accumulation of energy pipeline is connected with accumulation of energy valve A, described accumulation of energy valve A is connected to described hydraulic pressure and stores
Can be between device B and the outlet of described variable pump 1, on the oil return opening and described 3rd reversal valve E3 on described second reversal valve E2
Oil return opening is connected between described accumulation of energy valve A and the described hydraulic accumulator B on described accumulation of energy pipeline by pipeline.
Further, the oil return opening of the oil return opening of described second reversal valve E2 and described 3rd reversal valve E3 and described storage
It is respectively arranged with check valve F, the conducting direction of two described check valve F is respectively facing described storage on the pipeline that energy pipeline is connected
Can pipeline.
Optionally, it is also associated with an overflow valve C, institute between the port of described hydraulic accumulator B and the oil-in of fuel tank D
State overflow valve C can work as in hydraulic accumulator B reclaim Fuel Oil Remaining excessive when, Fuel Oil Remaining is delivered in fuel tank D.
Further, the rotating speed that described energy-recuperation system also includes being arranged in described rotating mechanism of dredger rotating shaft passes
Sensor and rotating speed acceleration sensor, described speed probe is used for gathering the rotating speed of described rotating mechanism of dredger rotating shaft, institute
State rotating speed acceleration sensor for gathering the acceleration of described rotating mechanism of dredger rotating shaft.
Rotating mechanism of dredger energy-recuperation system based on accumulator provided in an embodiment of the present invention, described first commutation
Valve is three position four-way directional control valve, and described second reversal valve and described 3rd reversal valve are two-bit triplet reversal valve, described accumulator valve
Door is 2/2-way reversal valve：
When described rotating mechanism of dredger start brake, and described three position four-way directional control valve middle position connect, described two two
The position left position of three-way diverter valve is connected, and the oil-out of described hydraulic motor is connect by two check valves and described hydraulic accumulator respectively
Logical, described hydraulic accumulator starts to reclaim the braking energy of described rotating mechanism of dredger；
When the braking of described rotating mechanism of dredger completes, and when the left position of described three position four-way directional control valve is connected, described excavation
Machine slew gear starts reverse starting；
When the reverse uniform motion of described rotating mechanism of dredger, and when the right position of described 2/2-way reversal valve is connected, described
Hydraulic accumulator starts to discharge braking energy, so that described rotating mechanism of dredger reversely accelerates to start.
The embodiment of the present invention also provides a kind of rotating mechanism of dredger energy reclaiming method based on accumulator, methods described
It is applied to the rotating mechanism of dredger energy-recuperation system based on accumulator described in above-described embodiment, methods described includes as follows
Step：
Step 1, when rotating mechanism of dredger starts braking, produces braking in described rotating mechanism of dredger braking procedure
Energy, described braking energy is sent to hydraulic accumulator by the oil return opening of the second reversal valve and the 3rd reversal valve and is reclaimed
Storage；When the braking of described rotating mechanism of dredger completes, hydraulic accumulator completes the recovery of braking energy；Described braking energy
Including at least rotational kinetic energy and frictional heat energy；
Step 2, when described rotating mechanism of dredger reverse starting, the braking energy of recovery is entered by described hydraulic accumulator
Row release, so that described rotating mechanism of dredger reversely accelerates to start.
Specifically, methods described comprises the steps：
Step 1, when rotating mechanism of dredger starts to brake, by the input control signal of described three position four-way directional control valve and calmly
Value signal 0 is separately input into first comparator, described first comparator output signal 1；
Step 2, described comparator output signal 1 is inputted proportional amplifier, thus obtaining described proportional amplifier output
Signal k；
Step 3, controls letter using described proportional amplifier output signal k as the input of two two-bit triplet reversal valves
Number, thus the left position of each two-bit triplet reversal valve is connected, hydraulic accumulator starts to recover energy；
Step 4, when the braking of described rotating mechanism of dredger completes, described three position four-way directional control valve input control signal is adjusted
Described three position four-way directional control valve left position connection, described rotating mechanism of dredger starts reverse starting；
Step 5, determines that described hydraulic accumulator discharges start time and the finish time of braking energy, and in described beginning
Between moment and described finish time, the left position of 2/2-way reversal valve is connected, and described hydraulic accumulator starts to discharge braking energy.
Specifically, in step 5, described start time and the finish time determining that described hydraulic accumulator discharges braking energy
It is specially：
(5a) obtain the real-time angular velocity of rotating shaft after the rotating mechanism of dredger reverse starting that collects of angular-rate sensor,
The real-time angular velocity of described rotating mechanism of dredger rotating shaft is compared with the angular velocity threshold value setting, and records described real-time
Angular velocity is less than the first time period of described angular velocity threshold value；
(5b) after obtaining the rotating mechanism of dredger reverse starting that angular acceleration transducer collects, the real-time angle of rotating shaft adds
Speed absolute value, described real-time angular acceleration absolute value is compared with the angular acceleration threshold value setting, and records described reality
When angular acceleration be less than described angular acceleration threshold value second time period；
(5c) determine section common time of described first time period and described second time period, the rising of described section common time
Moment of beginning is the start time that described hydraulic accumulator discharges braking energy, and the finish time of section described common time is institute
State the finish time that hydraulic accumulator discharges braking energy.
It should be noted that the embodiment of the present invention increased hydraulic accumulator in the rotary system of conventional excavators returning
Road, during excavator initial start-up, rotating mechanism of dredger is braked according to traditional mode normal work, rotating mechanism of dredger
When hydraulic accumulator just work.
It should be noted that can go back in mechanism's braking procedure in excavator, hydraulic accumulator commutates in two two-bit triplets
Access loop under valve action, reclaim braking energy.
It should be noted that because slew gear has larger velocity perturbation when accelerating and starting, in view of hydraulic accumulator
The finite energy reclaiming, selects the braking energy that during slew gear uniform motion, release hydraulic accumulator reclaims.
It should be noted that when two two-bit triplet reversal valves are all in right position, rotating mechanism of dredger is operated in biography
System pattern.
The complete job mistake of the rotating mechanism of dredger energy-recuperation system based on accumulator provided in an embodiment of the present invention
Journey is as follows：
(1) the control signal regulated variable pump startup of variable pump, the right position of three position four-way directional control valve is connected, now slew gear
Start to rotate forward and start.
(2) slew gear starts and completes, and rotates to operating position, excavator starts digging operation.
(3) excavator digging operation completes, and rotates to discharge position, and slew gear starts to brake.
(4) control signal of three position four-way directional control valve adjusts three position four-way directional control valve and is in middle position (now, variable pump control
The input of signal and three position four-way directional control valve control signal is 0, and the discharge capacity of variable pump is also 0), two left side two-bit triplets change
It is in left position to valve, so that the oil-out of motor is passed through two check valves and connected with hydraulic accumulator, hydraulic accumulator starts
Storage energy.
(5) in the presence of accumulator operating pressure, realize braking.After the completion of braking, three position four-way directional control valve controls letter
Number adjust three position four-way directional control valve be in left position, slew gear starts reverse starting.
(6) after the reverse uniform motion of slew gear, the control signal of 2/2-way reversal valve adjusts 2/2-way commutation
Valve is in right position, and accumulator starts to release energy, and realizes the reverse acceleration of slew gear.
Exemplary, as shown in figure 4, the excavation for conventional excavators slew gear deboost phase and technical solution of the present invention
The rotating speed correlation curve schematic diagram of machine slew gear deboost phase.
Figure 4, it is seen that excavator revolution provided in an embodiment of the present invention is mounted at deboost phase velocity perturbation relatively
Little, and can comparatively fast brake, reduce the hydraulic shock in braking for the system.
From figure 5 it can be seen that during rotating mechanism of dredger reverse starting, discharging braking energy in hydraulic accumulator
Under effect, slew gear is again speeded up.
The pressure of hydraulic accumulator and volume produce accordingly with the recovery of braking energy and release as can be seen from Figure 6
Change, realizes the recycling of energy.
In sum, the rotating mechanism of dredger energy-recuperation system based on accumulator provided in an embodiment of the present invention is returning
Braking energy can be reclaimed during rotation mechanism braking, when slew gear is again started up, can release energy.
You need to add is that, the selection on the opportunity that releases energy with regard to accumulator, need to analyze slew gear in motor process
In the characteristics of motion and energy supply situation.
On startup, the pressure of motor oil-in is rapidly reached the set pressure of pump discharge overflow valve, overflow to slew gear
Valve is by excess traffic overflow.Subsequently motor and slew gear accelerate to start, and with the lifting of motor speed, absorbing flow increases,
The spillway discharge of overflow valve reduces, and the pressure of system still maintains the set pressure of overflow valve, until the moment that releases energy.
When the flow that motor absorbs is equal to the output flow of pump, overflow valve no longer overflow, system pressure begins to decline, but
The driving moment that now system pressure produces still is more than load resistance square, so although slew gear rotation acceleration reduces,
But also accelerating.With the increase further of rotating speed, supply falls short of demand for the flow of motor, when driving moment that system pressure produces etc.
When steering resistance square, slew gear rotating speed reaches maximum, later by uniform rotation, slightly velocity perturbation.
When overflow valve is opened, drug on the market for the flow of variable pump, and after unlatching, velocity perturbation is larger, due to hydraulic accumulator
The finite energy reclaiming, can select to release energy after slew gear velocity-stabilization again.Meanwhile, when the rotating speed of slew gear
After tending towards stability, though rotating speed has fluctuation, rotation acceleration very little, so release hydraulic accumulator is received when selecting acceleration less
The braking energy of collection.
The control principle of the energy regenerating that the embodiment of the present invention is provided and release comprises the following steps that：
Step one：Three position four-way directional control valve control signal is made comparisons with definite value 0, when three position four-way directional control valve control signal
During for 0, export 1 more afterwards.
Step 2：Output signal, k amplifies in proportion, as the control signal of the right and left two-bit triplet reversal valve.
Step 3：The control signal of left side two-bit triplet reversal valve adjusts left side two-bit triplet reversal valve and is in left position, right
The control signal of side two-bit triplet reversal valve adjusts the right two-bit triplet reversal valve and is also at left position, and now accumulator starts to store
Energy.
Step 4：After the completion of braking, three position four-way directional control valve control signal adjusts three position four-way directional control valve and is in left position, returns
Rotation mechanism starts reverse starting.
Step 5：After slew gear reverse starting, due to having maximum to drop to when angular velocity reaches 12r/min brief acceleration
0, fluctuate at 0 and amplitude is less and less.The angular velocity of slew gear and the angle setting will be collected by angular-rate sensor
Threshold speed (exemplary, to could be arranged to 12r/min) is made comparisons, and when this value is more than k, output signal value is 1, otherwise defeated
Going out signal value is 0.
Step 5：Record output signal is 1 time period.
Step 6：The angular acceleration being collected slew gear by angular acceleration transducer is taken absolute value.
Step 7：By the absolute value of angular acceleration and default angular acceleration threshold value (exemplary, could be arranged to
0.01) make comparisons, record makes the absolute value of acceleration be less than the time period of the angular acceleration threshold value setting.
Step 8：The angular acceleration obtaining described in velocity amplitude described in step 5 more stable time period and step 7 is less
Time period, that is, obtained accumulator described previously and released energy the time period.
Step 9：Clock signal is made comparisons with definite value K (1s), when the value of clock signal is more than K (1s) value during input
Clock signal.
Step 10：When meeting described in step 8 and step 9,2/2-way commutation valve control signal adjusts two two simultaneously
Logical reversal valve is in left position, and accumulator starts to release energy.
Exemplary, such as Fig. 7 is three position four-way directional control valve and two-bit triplet commutation valve control signal, can from Fig. 7
Go out, control accumulator loop link simply easily to grasp using the control signal of three position four-way directional control valve and two-bit triplet reversal valve
Make.
If Fig. 8 is the control signal that accumulator releases energy, appropriate release is completed by control signal hydraulic accumulator.
If Fig. 9 is after hydraulic accumulator releases energy, slew gear reversion speed curves, by Fig. 9 it can clearly be seen that
After releasing energy, slew gear adverse movement is accelerated.
If Figure 10 is the change of flow and filled volume when hydraulic accumulator releases energy, as shown in Figure 10, hydraulic energy-accumulating
Device moment that stably releases energy is substantially conformed to the control signal in Fig. 8, fully demonstrates the correctly feasible of this control method.
What the present invention produced has the beneficial effect that：(1) add hydraulic accumulator in conventional excavators slew gear, establish
Based on accumulator energy-recuperation system；(2) on the basis of accumulator energy-recuperation system, add logic letter in recovery system
Number control system, demonstrates the control of energy regenerating and release by angular velocity, the feedback signal of angular acceleration and logical operationss
Process.This system achieves and recovers energy in braking, the purpose releasing energy when being again started up；(3) this invention is effectively returned
The rotational kinetic energy being lost with form of thermal energy during having received hydraulic crawler excavator rotary braking, thus not only energy saving and reduction liquid
The oil temperature of pressure system, also improves reliability and the service life of equipment simultaneously.Secondly, this energy-saving scheme not only can be generalized to it
His model hydraulic crawler excavator, this is also that the engineering machinery of correlation type provides reference.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by described scope of the claims.
Claims (6)
1. a kind of rotating mechanism of dredger energy-recuperation system based on accumulator, including the fuel tank being sequentially connected by pipeline,
Variable pump, the first reversal valve, hydraulic motor, are connected with the first oil circuit and between described first reversal valve and described hydraulic motor
Two oil circuits, on the outfan of described hydraulic motor drive connection have slew gear and damping mechanism it is characterised in that
Accumulation of energy pipeline is also associated with the pipeline between described variable pump and described first reversal valve, described accumulation of energy pipeline connects
There is hydraulic accumulator, described first oil circuit is connected with the second reversal valve, described second oil circuit is connected with the 3rd reversal valve, institute
State accumulation of energy pipeline and pass through pipeline connection with described second reversal valve and described 3rd reversal valve respectively.
2. a kind of rotating mechanism of dredger energy-recuperation system based on accumulator according to claim 1, its feature exists
In all there is oil-in, oil-out and oil return opening on described second reversal valve and described 3rd reversal valve, described second reversal valve
It is connected by pipeline with described first reversal valve respectively with the oil-in on described 3rd reversal valve, on described second reversal valve
Oil-out is connected with a port on described hydraulic motor by described first oil circuit, the oil-out on described 3rd reversal valve
It is connected with another port on described hydraulic motor by described second oil circuit；Described second reversal valve and described 3rd commutation
Oil return opening on valve respectively pass through pipeline simultaneously with described accumulation of energy pipeline connection.
3. a kind of rotating mechanism of dredger energy-recuperation system based on accumulator according to claim 2, its feature exists
In accumulation of energy valve being connected with described accumulation of energy pipeline, described accumulation of energy valve is connected to described hydraulic accumulator and described variable pump
Outlet between, the oil return opening on oil return opening and described 3rd reversal valve on described second reversal valve is connected to institute by pipeline
State between described accumulation of energy valve and the described hydraulic accumulator on accumulation of energy pipeline.
4. a kind of rotating mechanism of dredger energy-recuperation system based on accumulator according to claim 3, its feature exists
In on the pipeline that the oil return opening of described second reversal valve is connected with described accumulation of energy pipeline with the oil return opening of described 3rd reversal valve
It is respectively arranged with check valve, the conducting direction of two described check valves is respectively facing described accumulation of energy pipeline.
5. a kind of rotating mechanism of dredger energy regenerating system based on accumulator according to any one of claim 1 to 4
System is it is characterised in that be provided with speed probe and rotating speed acceleration sensor in the rotating shaft of described slew gear.
6. a kind of rotating mechanism of dredger energy reclaiming method based on accumulator, methods described is applied to claim 1-5 and appoints
The rotating mechanism of dredger energy-recuperation system based on accumulator described in one it is characterised in that methods described include as follows
Step：
Step 1, when rotating mechanism of dredger starts braking, produces Brake Energy in described rotating mechanism of dredger braking procedure
Amount, described braking energy is sent to hydraulic accumulator by the oil return opening of the second reversal valve and the 3rd reversal valve and carries out reclaiming storage
Deposit；When the braking of described rotating mechanism of dredger completes, hydraulic accumulator completes the recovery of braking energy；Described braking energy is extremely
Comprise rotational kinetic energy and frictional heat energy less；
Step 2, when described rotating mechanism of dredger reverse starting, the braking energy of recovery is released by described hydraulic accumulator
Put, so that described rotating mechanism of dredger reversely accelerates to start.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610903184.1A CN106400874A (en) | 2016-10-18 | 2016-10-18 | Energy accumulator based excavator rotating mechanism energy recovery system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903184.1A CN106400874A (en) | 2016-10-18 | 2016-10-18 | Energy accumulator based excavator rotating mechanism energy recovery system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729493A (en) * | 2018-06-07 | 2018-11-02 | 马鞍山松鹤信息科技有限公司 | A kind of excavator of steady accumulation of energy |
| CN108915008A (en) * | 2018-07-09 | 2018-11-30 | 马鞍山市润启新材料科技有限公司 | A kind of excavator Hydraulic slewing system |
| CN108953309A (en) * | 2018-07-27 | 2018-12-07 | 徐州工业职业技术学院 | A kind of energy recovery and reuse hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103697023A (en) * | 2013-12-26 | 2014-04-02 | 浙江德泰机电工程有限公司 | Electro-hydraulic energy recovery and release system for slewing brake of engineering machinery |
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| CN108915008A (en) * | 2018-07-09 | 2018-11-30 | 马鞍山市润启新材料科技有限公司 | A kind of excavator Hydraulic slewing system |
| CN108953309A (en) * | 2018-07-27 | 2018-12-07 | 徐州工业职业技术学院 | A kind of energy recovery and reuse hydraulic system |
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Application publication date: 20170215 |