CN106223391A - A kind of excavator energy regenerating and utilize system - Google Patents
A kind of excavator energy regenerating and utilize system Download PDFInfo
- Publication number
- CN106223391A CN106223391A CN201610778963.3A CN201610778963A CN106223391A CN 106223391 A CN106223391 A CN 106223391A CN 201610778963 A CN201610778963 A CN 201610778963A CN 106223391 A CN106223391 A CN 106223391A
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- China
- Prior art keywords
- oil cylinder
- control valve
- hydraulic
- fluid port
- oil
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
-
- 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)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of excavator energy regenerating and utilizes system, including volume adjustable hydraulic pump, the first control valve, the first oil cylinder, the second control valve, the second oil cylinder, hydraulic accumulator and overflow valve, first oil cylinder is boom cylinder, is used for driving excavator swing arm lifting work；When swing arm declines, making the first oil cylinder retract by the first control valve, the first oil cylinder rodless cavity makes recovery fluid supercharging enter hydraulic accumulator through the second control valve, the second oil cylinder, it is achieved the recovery of movable arm potential energy；When boom arm lift, according to the first Flow of Cylinder needs, control variable hydraulic pump and hydraulic accumulator drive the first oil cylinder to run, it is achieved the utilization of movable arm potential energy.The present invention manipulates two oil cylinders and the work of hydraulic accumulator by the control of each control valve, it is achieved that the lifting of swing arm, is simultaneously achieved directly reclaiming and utilizing of movable arm potential energy, has saved cost；Not affecting operability, simple in construction, transmission efficiency are high.
Description
Technical field
The present invention relates to a kind of excavator energy regenerating and utilize system, belong to excavator energy regenerating and utilize technology to lead
Territory.
Background technology
Developing rapidly along with socioeconomic, energy shortage and problem of environmental pollution are on the rise, and each state will reduce the most
Energy loss, protection environment are brought into schedule.Meanwhile, Energy Efficiency Ratio is one of key parameter of the hydraulic crawler excavator market competition, therefore
The Study on energy saving of hydraulic crawler excavator and apply particularly necessary.
At present, country's 13 science and technology supporting projects have been listed in oil-liquid hybrid electric technical research in, based on excavator energy
The hydraulic hybrid Study on energy saving reclaimed and application, mainly can be carried out back excavator swing arm potential energy, rotary braking
Receiving, the energy of recovery is stored by accumulator.The energy utilization mode reclaimed mainly has directly or indirectly two kinds, directly utilizes and is
Directly driving executive component to work the energy of recovery, indirect utilization is that the energy reclaimed is passed through the element transformation such as pump/motor
After drive executive component to work again, indirect utilization mode transmission efficiency is relatively low, directly utilizes mode transmission efficiency higher.
Summary of the invention
The problem existed for above-mentioned prior art, the present invention provides a kind of excavator energy regenerating and utilizes system, real
While existing swing arm lifting, directly reclaiming and utilizing of movable arm potential energy can be realized；Simple in construction, can improve operability and transmission effect
Rate.
To achieve these goals, the present invention use a kind of excavator energy regenerating and utilize system, including variable liquid
Press pump, the first control valve, the first oil cylinder, the second control valve, the second oil cylinder, hydraulic accumulator and overflow valve, volume adjustable hydraulic pump
Oil-in be connected with fuel tank, the hydraulic fluid port A of oil-out and the first control valve connects；The hydraulic fluid port B of the first control valve and the first oil cylinder
Rod chamber connect, the rodless cavity connection of the hydraulic fluid port C of the first control valve and the first oil cylinder；The hydraulic fluid port A and first of the second control valve
The rodless cavity of oil cylinder connects, and the hydraulic fluid port B of the second control valve is connected by the hydraulic fluid port A of the first check valve and the second oil cylinder, the second oil
The hydraulic fluid port B of cylinder is connected with the oil-in of hydraulic accumulator, overflow valve；The hydraulic fluid port C of the second control valve passes through the second check valve and liquid
Pressure accumulator, the oil-in of overflow valve connect；The hydraulic fluid port D of the first control valve, the oil-out of overflow valve are connected with fuel tank；First oil
Cylinder is boom cylinder, is used for driving excavator swing arm lifting work；When swing arm declines, the first oil cylinder is made to contract by the first control valve
Returning, the first oil cylinder rodless cavity makes recovery fluid supercharging enter hydraulic accumulator through the second control valve, the second oil cylinder, it is achieved swing arm gesture
Directly reclaiming of energy；When boom arm lift, drive according to the first Flow of Cylinder needs, control variable hydraulic pump and hydraulic accumulator
First oil cylinder runs, it is achieved directly utilizing of movable arm potential energy.
Preferably, described variable delivery hydraulic pump delivery can be according to the needs of the first oil cylinder and the amount of hydraulic accumulator
Automatically coupling is changed, meanwhile, the release uninterrupted of the hydraulic accumulator amount according to self and the row of volume adjustable hydraulic pump
Amount size is controlled in real time by the second control valve.
Preferably, described second oil cylinder is pressurized cylinder, can be by the area ratio of A Yu A and the preacceleration inflation of hydraulic accumulator
Power controls to be filled with the oil liquid pressure size of hydraulic accumulator.
Preferably, described second control valve is flow and directional control valve, can according to the output pressure of hydraulic accumulator and
At first oil cylinder rodless cavity, the pressure of hydraulic fluid port A controls the output flow of hydraulic accumulator.
Operation principle:
During swing arm down maneuver, control the first control valve commutation, make the hydraulic fluid port A of the first control valve connect with hydraulic fluid port B.When
When one cylinder rod chamber pressure reaches setting value, the hydraulic fluid port C of the first control valve connects with hydraulic fluid port D, volume adjustable hydraulic pump output fluid,
Flow into the rod chamber of the first oil cylinder through hydraulic fluid port A, the hydraulic fluid port B of the first control valve, the rodless cavity fluid of the first oil cylinder flows out, and through the
The hydraulic fluid port C of one control valve, hydraulic fluid port D flow back to fuel tank.When the first cylinder rod chamber pressure is not up to setting value, the first control valve
Hydraulic fluid port C and hydraulic fluid port D disconnects, and controls the second control valve, makes the hydraulic fluid port A of the second control valve connect with hydraulic fluid port B, and volume adjustable hydraulic pump exports
Fluid, flows into the rod chamber of the first oil cylinder through hydraulic fluid port A, the hydraulic fluid port B of the first control valve, and the rodless cavity fluid of the first oil cylinder flows out,
And through hydraulic fluid port A, B of the second control valve, flowing into the hydraulic fluid port A of the second oil cylinder through first direction valve, fluid is from the hydraulic fluid port B of the second oil cylinder
Exiting into hydraulic accumulator, the first oil cylinder is retracted, along with the oil increasing of entrance hydraulic accumulator, the pressure of hydraulic accumulator
Increase.When meeting or exceeding the setting pressure of hydraulic accumulator, fluid flows back to fuel tank through overflow valve, here the oil of the second oil cylinder
The pressure that pressure is hydraulic fluid port A of mouth B and the product of A1/A2 area ratio.
When swing arm promotes at a slow speed, the hydraulic fluid port A of the first control valve connects with hydraulic fluid port C, and hydraulic fluid port B connects with hydraulic fluid port D.Now, become
Amount hydraulic pump output fluid, through hydraulic fluid port A, C of the first control valve, flows into the rodless cavity of the first oil cylinder, oil in the first cylinder rod chamber
Liquid stream goes out, and flows back to fuel tank through hydraulic fluid port B, D of the first control valve, drives the first oil cylinder to stretch out, to promote at a slow speed excavator swing arm.
During swing arm fast lifting, control the first control valve and the second control valve, make the hydraulic fluid port A and hydraulic fluid port C of the first control valve
Connection, the hydraulic fluid port C of the second control valve connects with hydraulic fluid port A.Now, volume adjustable hydraulic pump output fluid, flow through the first control valve and obtain oily
Mouth A and hydraulic fluid port C, the fluid of hydraulic accumulator flows through hydraulic fluid port C and A of the second check valve, the second control valve, controls valve oil with first
The fluid of mouth C converges the rodless cavity entering the first oil cylinder, drives the first oil cylinder 4 extending action, makes excavator swing arm rapid increase.
Compared with prior art, the present invention manipulates two oil cylinders and the work of hydraulic accumulator by the control of each control valve
Make, it is achieved that the lifting of swing arm, be simultaneously achieved directly reclaiming and utilizing of movable arm potential energy, saved cost.Specifically, swing arm
During decline, making the first oil cylinder retract by the first control valve, the first oil cylinder rodless cavity makes recovery through the second control valve, the second oil cylinder
Fluid supercharging enters hydraulic accumulator, it is achieved directly reclaiming of movable arm potential energy；When boom arm lift, according to the first Flow of Cylinder need
, control variable hydraulic pump and hydraulic accumulator drive the first oil cylinder to run, it is achieved directly utilizing of movable arm potential energy.Eventually through
Valve directly reclaims and utilizes excavator swing arm potential energy, does not affect operability, and simple in construction, transmission efficiency are high.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the present invention.
In figure: 1, fuel tank, 2, volume adjustable hydraulic pump, the 3, first control valve, the 4, first oil cylinder, the 5, second control valve, 6, first
Check valve, the 7, second oil cylinder, the 8, second check valve, 9, hydraulic accumulator, 10, overflow valve.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of excavator energy regenerating and utilize system, including volume adjustable hydraulic pump the 2, first control valve 3, the
One oil cylinder the 4, second control valve the 5, second oil cylinder 7, hydraulic accumulator 9 and overflow valve 10, the oil-in of volume adjustable hydraulic pump 2 and oil
Case 1 connects, and the hydraulic fluid port A of oil-out and the first control valve 3 connects；The hydraulic fluid port B of the first control valve 3 and the rod chamber of the first oil cylinder 4
Connecting, the hydraulic fluid port C of the first control valve 3 and the rodless cavity of the first oil cylinder 4 connect；The hydraulic fluid port A of the second control valve 5 and the first oil cylinder 4
Rodless cavity connect, the hydraulic fluid port B of the second control valve 5 is connected with the hydraulic fluid port A of the second oil cylinder 7 by the first check valve 6, the second oil cylinder
The hydraulic fluid port B of 7 is connected with the oil-in of hydraulic accumulator 9, overflow valve 10；The hydraulic fluid port C of the second control valve 5 passes through the second check valve 8
It is connected with the oil-in of hydraulic accumulator 9, overflow valve 10；The hydraulic fluid port D of the first control valve 3, oil-out and the fuel tank 1 of overflow valve 10
Connect；First oil cylinder 4 is boom cylinder, is used for driving excavator swing arm lifting work；When swing arm declines, by the first control valve
3 make the first oil cylinder 4 retract, and the first oil cylinder 4 rodless cavity makes recovery fluid supercharging enter hydraulic pressure through second control valve the 5, second oil cylinder 7
Accumulator 9, it is achieved directly reclaiming of movable arm potential energy；When boom arm lift, according to the first oil cylinder 4 flow needs, control variable liquid
Press pump 2 and hydraulic accumulator 9 drive the first oil cylinder 4 to run, it is achieved directly utilizing of movable arm potential energy.
Preferably, the discharge capacity of described volume adjustable hydraulic pump 2 can be according to the needs of the first oil cylinder 4 and the energy of hydraulic accumulator 9
How many automatically changing coupling, meanwhile, the release uninterrupted of hydraulic accumulator 9 is according to self amount and volume adjustable hydraulic pump
The displacement size of 2 is controlled in real time by the second control valve 5.
Preferably, described second oil cylinder 7 is pressurized cylinder, can pass through the area ratio of A1 with A2 and the pre-of hydraulic accumulator 9
Pressurising power controls to be filled with the oil liquid pressure size of hydraulic accumulator 9.
Preferably, described second control valve 5 is flow and directional control valve, can be according to the output pressure of hydraulic accumulator 9
The output flow of hydraulic accumulator 9 is controlled with the pressure of hydraulic fluid port A at the first oil cylinder 4 rodless cavity.
Work process (refers to Fig. 1):
During swing arm down maneuver, the first control valve 3 can be controlled and commutate, make the hydraulic fluid port A of the first control valve 3 connect with hydraulic fluid port B.
When the pressure of the first oil cylinder 4 rod chamber reaches setting value, the hydraulic fluid port C of the first control valve 3 connects with hydraulic fluid port D, volume adjustable hydraulic pump 2
Output fluid, flows into the hydraulic fluid port B of the first oil cylinder 4 through hydraulic fluid port A, the hydraulic fluid port B of the first control valve 3 and enters the rod chamber of the first oil cylinder 4,
First oil cylinder 4 rodless cavity fluid flows out through hydraulic fluid port A, flows back to fuel tank 1 through hydraulic fluid port C, the hydraulic fluid port D of the first control valve 3.When the first oil cylinder
When 4 rod chamber pressure are not up to setting value, the hydraulic fluid port C and hydraulic fluid port D of the first control valve 3 disconnect, and control the second control valve 5, make the
The hydraulic fluid port A of two control valves 5 connects with hydraulic fluid port B, and volume adjustable hydraulic pump 2 exports fluid, through the hydraulic fluid port A and hydraulic fluid port B of the first control valve 3,
The hydraulic fluid port B flowing into the first oil cylinder 4 enters the rod chamber of the first oil cylinder 4, and the rodless cavity fluid of the first oil cylinder 4 flows out through hydraulic fluid port A, warp
The hydraulic fluid port A of the second control valve 5, hydraulic fluid port B, first direction valve 6 flow into the hydraulic fluid port A of the second oil cylinder 7, and fluid is from the oil of the second oil cylinder 7
Mouth B exits into hydraulic accumulator 9, and the first oil cylinder 4 is retracted.Along with the oil increasing of entrance hydraulic accumulator 9, hydraulic accumulator
The pressure of 9 increases；When meeting or exceeding the setting pressure of hydraulic accumulator 9, fluid flows back to fuel tank 1 through overflow valve 10, here
The pressure that pressure is oil-in A of the oil-out B of the second oil cylinder 7 and the product of A1/A2 area ratio.
When swing arm promotes at a slow speed, the hydraulic fluid port A of the first control valve 3 connects with hydraulic fluid port C, and hydraulic fluid port B connects with hydraulic fluid port D.Now, become
Amount hydraulic pump 2 exports the hydraulic fluid port A that fluid flows into the first oil cylinder 4 through hydraulic fluid port A, the hydraulic fluid port C of the first control valve 3 and enters the first oil cylinder 4
Rodless cavity, the rod chamber fluid of the first oil cylinder 4 through hydraulic fluid port the first oil cylinder 4 hydraulic fluid port B flow out, flow through the oil of the first control valve 3
Mouth B and hydraulic fluid port D, flows back to fuel tank 1, drives the first oil cylinder 4 to stretch out, to promote excavator swing arm.
During swing arm fast lifting, control the first control valve 3 and the second control valve 5, make hydraulic fluid port A and the oil of the first control valve 3
Mouth C connection, the hydraulic fluid port C of the second control valve 5 connects with hydraulic fluid port A.Now, volume adjustable hydraulic pump 2 exports fluid, flows through the first control valve
The hydraulic fluid port A and hydraulic fluid port C of 3, the fluid of hydraulic accumulator 9 flows through hydraulic fluid port C, A of second check valve the 8, second control valve 5, with first
The fluid of the hydraulic fluid port C of control valve 3 converges the hydraulic fluid port A entering the first oil cylinder 4, flows into the rodless cavity of the first oil cylinder 4, drives the first oil
Cylinder 4 extending action, makes excavator swing arm rise.
From said structure, the present invention manipulates two oil cylinders and the work of hydraulic accumulator by the control of each control valve
Make, it is achieved that the lifting of swing arm, be simultaneously achieved directly reclaiming and utilizing of movable arm potential energy, saved cost.Eventually through valve
Directly reclaiming and utilize excavator swing arm potential energy, do not affect operability, simple in construction, transmission efficiency are high.
Claims (4)
1. an excavator energy regenerating and utilize system, it is characterised in that include volume adjustable hydraulic pump (2), the first control valve
(3), the first oil cylinder (4), the second control valve (5), the second oil cylinder (7), hydraulic accumulator (9) and overflow valve (10),
The oil-in of volume adjustable hydraulic pump (2) is connected with fuel tank (1), and the hydraulic fluid port A of oil-out and the first control valve (3) connects；First
The rod chamber of the hydraulic fluid port B of control valve (3) and the first oil cylinder (4) connects, the hydraulic fluid port C of the first control valve (3) and the first oil cylinder (4)
Rodless cavity connects；
The rodless cavity of the hydraulic fluid port A of the second control valve (5) and the first oil cylinder (4) connects, and the hydraulic fluid port B of the second control valve (5) is by the
One check valve (6) is connected with the hydraulic fluid port A of the second oil cylinder (7), the hydraulic fluid port B of the second oil cylinder (7) and hydraulic accumulator (9), overflow valve
(10) oil-in connects；The hydraulic fluid port C of the second control valve (5) is by the second check valve (8) and hydraulic accumulator (9), overflow valve
(10) oil-in connects；
The hydraulic fluid port D of the first control valve (3), the oil-out of overflow valve (10) are connected with fuel tank (1)；
First oil cylinder (4) is boom cylinder, is used for driving excavator swing arm lifting work；When swing arm declines, control by first
Valve (3) makes the first oil cylinder (4) retract, and the first oil cylinder (4) rodless cavity makes recovery fluid through the second control valve (5), the second oil cylinder (7)
Supercharging enters hydraulic accumulator (9), it is achieved directly reclaiming of movable arm potential energy；When boom arm lift, according to the first oil cylinder (4) flow
Needing, control variable hydraulic pump (2) and hydraulic accumulator (9) drive the first oil cylinder (4) to run, it is achieved the direct profit of movable arm potential energy
With.
A kind of excavator energy regenerating the most according to claim 1 and utilize system, it is characterised in that described variable delivery hydraulic
The discharge capacity of pump (2) can change coupling automatically according to the amount of the needs of the first oil cylinder (4) and hydraulic accumulator (9), meanwhile,
The release uninterrupted of hydraulic accumulator (9) according to the displacement size of self amount and volume adjustable hydraulic pump (2) by the
Two control valves (5) control in real time.
A kind of excavator energy regenerating the most according to claim 1 and utilize system, it is characterised in that described second oil cylinder
(7) it is pressurized cylinder, can control to be filled with hydraulic energy-accumulating by the Preliminary pressure-filled of the area ratio of A1 Yu A2 and hydraulic accumulator (9)
The oil liquid pressure size of device (9).
A kind of excavator energy regenerating the most according to claim 1 and utilize system, it is characterised in that described second controls
Valve (5) is flow and directional control valve, can be according to oil at the output pressure of hydraulic accumulator (9) and the first oil cylinder (4) rodless cavity
The pressure of mouth A controls the output flow of hydraulic accumulator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610778963.3A CN106223391A (en) | 2016-08-31 | 2016-08-31 | A kind of excavator energy regenerating and utilize system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610778963.3A CN106223391A (en) | 2016-08-31 | 2016-08-31 | A kind of excavator energy regenerating and utilize system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106223391A true CN106223391A (en) | 2016-12-14 |
Family
ID=58072065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610778963.3A Pending CN106223391A (en) | 2016-08-31 | 2016-08-31 | A kind of excavator energy regenerating and utilize system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106223391A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN108222114A (en) * | 2018-03-12 | 2018-06-29 | 徐州徐工挖掘机械有限公司 | A kind of hybrid excavator energy accumulating device |
| CN108895049A (en) * | 2018-08-28 | 2018-11-27 | 长沙学院 | A kind of Feedback Oil accurate positioning stabilization control device and method of hydraulic cylinder |
| CN110700337A (en) * | 2019-11-14 | 2020-01-17 | 山河智能装备股份有限公司 | Excavator movable arm energy-saving control system and control method |
| CN113323072A (en) * | 2021-06-16 | 2021-08-31 | 徐州阿马凯液压技术有限公司 | Self-control multifunctional reversing valve group and hydraulic excavator carrying same |
| US11746801B2 (en) | 2019-04-24 | 2023-09-05 | Volvo Construction Equipment Ab | Hydraulic device, a hydraulic system and a working machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524648A (en) * | 2017-08-09 | 2017-12-29 | 太原科技大学 | A kind of closed type energy-saving loop of excavator swing arm |
| CN108222114A (en) * | 2018-03-12 | 2018-06-29 | 徐州徐工挖掘机械有限公司 | A kind of hybrid excavator energy accumulating device |
| CN108895049A (en) * | 2018-08-28 | 2018-11-27 | 长沙学院 | A kind of Feedback Oil accurate positioning stabilization control device and method of hydraulic cylinder |
| US11746801B2 (en) | 2019-04-24 | 2023-09-05 | Volvo Construction Equipment Ab | Hydraulic device, a hydraulic system and a working machine |
| CN110700337A (en) * | 2019-11-14 | 2020-01-17 | 山河智能装备股份有限公司 | Excavator movable arm energy-saving control system and control method |
| CN110700337B (en) * | 2019-11-14 | 2023-10-24 | 山河智能装备股份有限公司 | Energy-saving control system and control method for movable arm of excavator |
| CN113323072A (en) * | 2021-06-16 | 2021-08-31 | 徐州阿马凯液压技术有限公司 | Self-control multifunctional reversing valve group and hydraulic excavator carrying same |
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Application publication date: 20161214 |
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