CN105386477B - Swing arm declines the device of energy absorption during a kind of excavator composite move - Google Patents
Swing arm declines the device of energy absorption during a kind of excavator composite move Download PDFInfo
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- CN105386477B CN105386477B CN201510729113.XA CN201510729113A CN105386477B CN 105386477 B CN105386477 B CN 105386477B CN 201510729113 A CN201510729113 A CN 201510729113A CN 105386477 B CN105386477 B CN 105386477B
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- Prior art keywords
- oil
- pilot operated
- operated directional
- valve
- directional control
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Classifications
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- 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
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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- 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
Swing arm declines the device of energy absorption when the present invention discloses a kind of excavator composite move, device includes check valve (2), the first pilot operated directional control valve (3), the second pilot operated directional control valve (4), shuttle valve (5) and the 3rd pilot operated directional control valve (6), the oil inlet of check valve is connected with the gear pump P3 oil-outs in main pump, and the oil-out of check valve is connected with the oil inlet of the first pilot operated directional control valve；Two oil-outs of the first pilot operated directional control valve are connected with the P3 mouths on hydraulic oil container, banked direction control valves respectively；Shuttle valve both ends hydraulic fluid port is connected with rotary valve key port pa2 and pb2 respectively, and oil-out is connected with the oil inlet of the 3rd pilot operated directional control valve；The oil-out of 3rd pilot operated directional control valve is connected with the control terminal of the first pilot operated directional control valve, the second pilot operated directional control valve.By the present invention in that with the device, the energy that effectively can be declined using swing arm, it is used in upper-part rotation, so as to play a part of reducing oil consumption.
Description
Technical field
The present invention relates to the device that swing arm during a kind of excavator composite move declines energy absorption, belongs to excavator technology neck
Domain.
Background technology
At present, hydraulic crawler excavator vehicle everything is realized by hydraulic oil driving executive component.Existing small-sized hydraulic is dug
Pick machine hydraulic system generally use throttling control mode, the control system mainly by main pump, banked direction control valves, rotary motor and row
Walk motor composition.In throttle system, main pump is by two Variable plunger pumps P1 and P2, the gear pump P3 of huge discharge and one
The gear pump P4 of small displacement is formed, and the main function of this four pumps is respectively：Variable plunger pump P1 provides right running motor, swing arm
Hydraulic oil required for oil cylinder and bucket cylinder work；Needed for Variable plunger pump P2 provides left running motor, bucket arm cylinder works
The hydraulic oil wanted；P3 provides the hydraulic oil required for rotary motor, dozer work；P4 provides complete machine pilot element and signal oil
Guide oil needed for road, guide oil oil pressure are relatively low.The hydraulic oil distribution that the effect of banked direction control valves is mainly provided main pump is to each
Executive component.
During work, after mechanical shovel bucket to be excavated is dug completely, driver will be shoveled by boom arm lift and the composite move of upper-part rotation
Bucket is delivered to above haulage vehicle, and scraper bowl unloads after opening,, will by swing arm decline and upper-part rotation composite move after unloading
Scraper bowl is sent to excavation site, re-starts excavation.
After power shovel unloading, when realizing return by swing arm decline and upper-part rotation composite move, swing arm relies on
The gravity of whole equipment declines, and now the return pressure of boom cylinder rodless cavity is very high, and hydraulic oil container is being returned by valve element
During, first need to throttle to it, anti-stopper arms decline is too fast to cause vehicle impact excessive, reaches the oil return of banked direction control valves
After chamber, return pressure further reduces.During this, the potential energy that swing arm declines is consumed by way of throttling, is converted into
Heat energy is dissipated by radiator, and the energy that swing arm declines cannot be utilized effectively, cause the waste of resource.And revolution action needs
Gear pump P3 is relied on to provide hydraulic oil driving, this just needs the power of consumption of engine, so as to consume more fuel oil.
The content of the invention
In view of the above-mentioned problems of the prior art, swing arm declines energy when the present invention provides a kind of excavator composite move
The device of absorption, the energy that effectively can be declined using swing arm, is used in upper-part rotation, reduces oil consumption.
To achieve these goals, swing arm declines the dress of energy absorption during a kind of excavator composite move that the present invention uses
Put, including check valve, the first pilot operated directional control valve, the second pilot operated directional control valve, shuttle valve and the 3rd pilot operated directional control valve, the oil-feed of check valve
Mouth is connected with the gear pump P3 oil-outs in main pump 1, and the oil-out of check valve is connected with the oil inlet of the first pilot operated directional control valve；The
Two oil-outs of one pilot operated directional control valve are connected with the P3 mouths on hydraulic oil container, banked direction control valves respectively；Second pilot operated directional control valve enters
Hydraulic fluid port is connected with the rodless cavity of boom cylinder, and oil-out is connected with the P3 mouths on the A8 mouths and banked direction control valves on banked direction control valves respectively；Shuttle
Valve both ends hydraulic fluid port is connected with the rotary valve key port pa2 on banked direction control valves and pb2 respectively, oil-out and the 3rd pilot operated directional control valve 6
Oil inlet is connected；The oil-out of 3rd pilot operated directional control valve is connected with the control terminal of the first pilot operated directional control valve, the second pilot operated directional control valve.
Swing arm declines the method for energy absorption during a kind of excavator composite move, and the swing arm declines energy absorbing method and used
Swing arm declines the device realization of energy absorption during above-mentioned excavator composite move, is specifically：
When the pilot valve handle for operating swing arm and revolution simultaneously, excavator is set to do swing arm decline and upper-part rotation composite move
When, pilot valve simultaneously the guide oil of rotary valve key control port pa2 or pb2 on banked direction control valves are passed through into shuttle valve oil-out transmission
To the oil inlet of the 3rd pilot operated directional control valve；Guide oil reaches the control of the 3rd pilot operated directional control valve at swing arm valve element control port pb8
End, the 3rd pilot operated directional control valve is commutated, the guide oil from shuttle valve oil-out reaches the by the 3rd pilot operated directional control valve oil-out
The control terminal of one pilot operated directional control valve and the second pilot operated directional control valve, the first pilot operated directional control valve and the second pilot operated directional control valve are changed simultaneously
To after the commutation of, the first pilot operated directional control valve, make the gear pump P3 oil-outs in main pump through check valve, the second pilot operated directional control valve and hydraulic pressure
Fuel tank communicates, and the hydraulic oil of P3 pumps output directly returns hydraulic oil container；First pilot operated directional control valve commutation after, make boom cylinder without bar
Chamber is communicated by the second pilot operated directional control valve with the P3 mouths on banked direction control valves, and when swing arm declines, rotary valve key passes through its control port
At pa2 or pb2 after the effect commutation of guide oil, the rodless cavity hydraulic oil of boom cylinder is revolution by the P3 hydraulic fluid ports on banked direction control valves
The revolution of motor provides hydraulic oil, and driving rotary motor rotates, and realizes upper-part rotation, it is achieved thereby that swing arm declines and got on the bus back
The composite move turned；Wherein, corresponding action is the revolution to the left and to right-hand rotation of getting on the bus to pa2 and pb2 hydraulic fluid ports respectively.
Compared with prior art, the present invention uses what is generally used on the excavators such as check valve, pilot operated directional control valve and shuttle valve
Element, the absorption that swing arm declines energy is realized, and by it used in upper-part rotation, can so as to play a part of reducing oil consumption
Realize the production and use of mass.Further, since excavator is at work, using composite move, above operating mode is each
In secondary circulation digging operation, can all occur once, so by the use of the present invention, fuel utilization ratio, oil consumption energy can be improved
It is enough largely to reduce.
Brief description of the drawings
Fig. 1 is the hydraulic principle schematic diagram of the present invention；
Fig. 2 is the present invention while operates swing arm decline and the hydraulic schematic diagram turned round to the left of getting on the bus；
Fig. 3 is the hydraulic schematic diagram that single action actuating arm of the present invention declines；
Fig. 4 is that one action of the present invention is got on the bus the hydraulic schematic diagram turned round to the left；
In figure：1st, main pump, 2, check valve, the 3, first pilot operated directional control valve, the 4, second pilot operated directional control valve, the 5, shuttle valve, the 6, the 3rd
Pilot operated directional control valve, 7, banked direction control valves, 8, boom cylinder, 9, rotary motor.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, swing arm declines the device of energy absorption, including check valve 2, first during a kind of excavator composite move
Pilot operated directional control valve 3, the second pilot operated directional control valve 4, the pilot operated directional control valve 6 of shuttle valve 5 and the 3rd, the oil inlet of check valve 2 with main pump 1
Gear pump P3 oil-outs are connected, and the oil-out of check valve 2 is connected with the oil inlet of the first pilot operated directional control valve 3；First liquid controlled reversing
Two oil-outs of valve 3 are connected with the P3 mouths on hydraulic oil container, banked direction control valves 7 respectively；The oil inlet of second pilot operated directional control valve 4 is with moving
The rodless cavity of arm oil cylinder 8 is connected, and oil-out is connected with the P3 mouths on the A8 mouths and banked direction control valves 7 on banked direction control valves 7 respectively；5 liang of shuttle valve
End hydraulic fluid port is connected with the rotary valve key port pa2 on banked direction control valves and pb2 respectively, the oil-feed of oil-out and the 3rd pilot operated directional control valve 6
Mouth is connected；The oil-out of 3rd pilot operated directional control valve 6 is connected with the control terminal of the first pilot operated directional control valve 3, the second pilot operated directional control valve 4.
Swing arm declines the method for energy absorption during a kind of excavator composite move, as the guide for operating swing arm and revolution simultaneously
Valve handle, excavator is done swing arm and decline and during upper-part rotation composite move, pilot valve is simultaneously by the rotary valve key on banked direction control valves 7
Control port pa2 or pb2 guide oil are delivered to the oil inlet of the 3rd pilot operated directional control valve 6 by the oil-out of shuttle valve 5；Boom valve
Guide oil reaches the control terminal of the 3rd pilot operated directional control valve 6 at core control port pb8, the 3rd pilot operated directional control valve 6 is commutated, from shuttle
The guide oil of the oil-out of valve 5 reaches the first pilot operated directional control valve 3 and the second pilot operated directional control valve by the oil-out of the 3rd pilot operated directional control valve 6
4 control terminal, the first pilot operated directional control valve 3 and the second pilot operated directional control valve 4 are commutated simultaneously, after the commutation of the first pilot operated directional control valve 3, made
Gear pump P3 oil-outs in main pump 1 communicate through check valve 2, the second pilot operated directional control valve 3 with hydraulic oil container, the hydraulic pressure of P3 pumps output
Oil directly returns hydraulic oil container；After the commutation of second pilot operated directional control valve 4, the rodless cavity of boom cylinder is set to pass through the second pilot operated directional control valve 4
Communicated with the P3 mouths on banked direction control valves 7, when swing arm declines, rotary valve key passes through the work of guide oil at its control port pa2 or pb2
After commutation, the rodless cavity hydraulic oil of boom cylinder 8 provides high pressure by the P3 hydraulic fluid ports on banked direction control valves 7 for the revolution of rotary motor
Oil, driving rotary motor rotate, and realize upper-part rotation, it is achieved thereby that swing arm declines and the composite move of upper-part rotation；Wherein,
Corresponding action is the revolution to the left and to right-hand rotation of getting on the bus to pa2 and pb2 hydraulic fluid ports respectively.
As shown in Fig. 2 when simultaneously operational control swing arm and revolution pilot valve handle, make excavator do swing arm decline and on
During the composite move that car turns round to the left, pilot valve is simultaneously to the rotary valve key control port pa2 on banked direction control valves 7 and swing arm valve element control
Liquefaction mouth pb8 provides guide oil, and guide oil promotes rotary valve key commutation at pa2, while shifts the steel ball of shuttle valve 5 onto opposite side,
The oil inlet up to the 3rd pilot operated directional control valve 6 that exports to that guide oil passes through shuttle valve 5；Guide oil at swing arm valve element control port pb8
The commutation of swing arm valve element is promoted, while reaches the control terminal of the 3rd pilot operated directional control valve 6, the 3rd pilot operated directional control valve 6 is commutated, makes to come from
The oil-out guide oil of shuttle valve 5 reaches the control of the first pilot operated directional control valve 3 and the second pilot operated directional control valve 4 by the 3rd pilot operated directional control valve 6
End processed, the first pilot operated directional control valve 3 and the second pilot operated directional control valve 4 are commutated simultaneously, after the commutation of the first pilot operated directional control valve 3, make main pump 1
In gear pump P3 oil-outs communicated by the pilot operated directional control valve 3 of check valve 2 and first with hydraulic oil container, P3 pumps output hydraulic oil
Directly return hydraulic oil container；After the commutation of second pilot operated directional control valve 4, make the rodless cavity of boom cylinder by the second pilot operated directional control valve 4 with
P3 mouths on banked direction control valves 7 communicate, and so, when swing arm declines, the rodless cavity hydraulic oil of boom cylinder 8 is just by banked direction control valves 7
P3 mouths provide hydraulic oil for the revolution of rotary motor, driving rotary motor rotates, and upper-part rotation is realized, it is achieved thereby that swing arm
Decline the composite move with upper-part rotation.
As shown in figure 3, when an operational control swing arm pilot valve handle, make excavator only do swing arm decline action when,
Pilot valve provides guide oil to the swing arm valve element control port pb8 on banked direction control valves 7, and guide oil promotes the commutation of swing arm valve element, simultaneously
The control terminal of the 3rd pilot operated directional control valve 6 is reached, the 3rd pilot operated directional control valve 6 is commutated, but now, due to no operation revolution guide
Valve handle, so no guide oil at rotary valve key control port pa2 and Pb2, shuttle valve 5 does not have guide oil yet, therefore does not have guide
Oil promotes the first pilot operated directional control valve 3 and the second pilot operated directional control valve 4 to commutate by the 3rd pilot operated directional control valve 6.Now, in main pump 1
P1 plunger pumps oil-out connects with the P1 hydraulic fluid ports on banked direction control valves 7, and after the commutation of swing arm valve element, the hydraulic oil that P1 pumps provide passes through swing arm
Valve element enters boom cylinder rod chamber, and the hydraulic oil of rodless cavity first passes through the second pilot operated directional control valve 4, again by swing arm throttling spool
Mouth is returned in the oil back chamber of banked direction control valves 7, eventually passes back to hydraulic oil container, so, is achieved that the action that swing arm declines.
As shown in figure 4, when a pilot valve handle for operational control revolution, excavator is only got on the bus and turn round one action to the left
When, pilot valve provides guide oil to the rotary valve key control port pa2 on banked direction control valves 7, and guide oil promotes rotary valve key to change at pa2
To, while shift the steel ball of shuttle valve 5 onto opposite side, guide oil reaches entering for the 3rd pilot operated directional control valve 6 by the oil-out of shuttle valve 5
Hydraulic fluid port, but now, swing arm pilot valve handle is operated due to no, so no guide oil at swing arm valve element control port pb8, the
Three pilot operated directional control valves 6 can not just commutate.The He of the first pilot operated directional control valve 3 is pushed away by the 3rd pilot operated directional control valve 6 from without guide oil
Second pilot operated directional control valve 4 commutates.Now, the P3 in main pump 1 pumps out hydraulic fluid port and passes through check valve 2, the first pilot operated directional control valve 3 and multichannel
P3 hydraulic fluid ports connection on valve 7, after rotary valve key commutation, the hydraulic oil that P3 pumps provide reaches rotary motor B oil by rotary valve key
Mouthful, driving rotary motor rotation, the oil return of rotary motor A hydraulic fluid ports returns to the oil back chamber of banked direction control valves 7 by rotary valve key, final to return
To hydraulic oil container.So, it is achieved that the revolution to the left got on the bus.
From said structure, by the present invention in that with the device, the energy that effectively can decline using swing arm, make it
For used in upper-part rotation, so as to play a part of reducing oil consumption.
Claims (1)
1. swing arm declines the device of energy absorption during a kind of excavator composite move, it is characterised in that including check valve (2), the
One pilot operated directional control valve (3), the second pilot operated directional control valve (4), shuttle valve (5) and the 3rd pilot operated directional control valve (6), the oil-feed of check valve (2)
Mouth is connected with gear pump (P3) oil-out in main pump (1), the oil-out of check valve (2) and entering for the first pilot operated directional control valve (3)
Hydraulic fluid port is connected；Two oil-outs of the first pilot operated directional control valve (3) are connected with the P3 mouths on hydraulic oil container, banked direction control valves (7) respectively；The
The oil inlet of two pilot operated directional control valves (4) is connected with the rodless cavity of boom cylinder (8), oil-out respectively with the A8 on banked direction control valves (7)
Mouth is connected with the P3 mouths on banked direction control valves (7)；Shuttle valve (5) both ends hydraulic fluid port respectively with the rotary valve key port pa2 on banked direction control valves (7) and
Pb2 is connected, and oil-out is connected with the oil inlet of the 3rd pilot operated directional control valve (6)；The oil-out and first of 3rd pilot operated directional control valve (6)
Pilot operated directional control valve (3), the control terminal of the second pilot operated directional control valve (4) are connected；
When the pilot valve handle for operating swing arm and revolution simultaneously, excavator is done swing arm and decline and during upper-part rotation composite move,
The oil-out that the guide oil of rotary valve key control port pa2 or pb2 on banked direction control valves (7) are passed through shuttle valve (5) by pilot valve simultaneously
It is delivered to the oil inlet of the 3rd pilot operated directional control valve (6)；Guide oil reaches the 3rd pilot operated directional control valve at swing arm valve element control port pb8
(6) control terminal, the 3rd pilot operated directional control valve (6) is commutated, and the guide oil from shuttle valve (5) oil-out passes through the 3rd liquid controlled reversing
Valve (6) oil-out reaches the control terminal of the first pilot operated directional control valve (3) and the second pilot operated directional control valve (4), by the first pilot operated directional control valve
(3) commutated simultaneously with the second pilot operated directional control valve (4), after the first pilot operated directional control valve (3) commutation, make the gear pump in main pump (1)
(P3) oil-out communicates through check valve (2), the second pilot operated directional control valve (3) with hydraulic oil container, the hydraulic oil of gear pump (P3) output
Directly return hydraulic oil container；After second pilot operated directional control valve (4) commutation, the rodless cavity of boom cylinder is set to pass through the second pilot operated directional control valve
(4) communicated with the P3 mouths on banked direction control valves (7), when swing arm declines, rotary valve key is by guide at its control port pa2 or pb2
After the effect commutation of oil, the rodless cavity hydraulic oil of boom cylinder (8) the returning for rotary motor by the P3 hydraulic fluid ports on banked direction control valves (7)
Turn provide hydraulic oil, driving rotary motor rotate, realize upper-part rotation, it is achieved thereby that swing arm decline and upper-part rotation it is compound
Action；Wherein, corresponding action is the revolution to the left and to right-hand rotation of getting on the bus to pa2 and pb2 hydraulic fluid ports respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729113.XA CN105386477B (en) | 2015-10-30 | 2015-10-30 | Swing arm declines the device of energy absorption during a kind of excavator composite move |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510729113.XA CN105386477B (en) | 2015-10-30 | 2015-10-30 | Swing arm declines the device of energy absorption during a kind of excavator composite move |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105386477A CN105386477A (en) | 2016-03-09 |
| CN105386477B true CN105386477B (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510729113.XA Active CN105386477B (en) | 2015-10-30 | 2015-10-30 | Swing arm declines the device of energy absorption during a kind of excavator composite move |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988374A (en) * | 2017-05-31 | 2017-07-28 | 徐州徐工挖掘机械有限公司 | A kind of excavator energy regenerating oil-supplementing system and its method |
| CN107201758B (en) * | 2017-06-15 | 2020-09-11 | 柳州柳工挖掘机有限公司 | Hydraulic system of excavator |
| CN110409527A (en) * | 2019-06-28 | 2019-11-05 | 三一重机有限公司 | A kind of movable arm potential energy recycling system and excavator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793042A (en) * | 2009-12-31 | 2010-08-04 | 福田雷沃国际重工股份有限公司 | Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine |
| CN102400476B (en) * | 2011-10-28 | 2013-08-21 | 山河智能装备股份有限公司 | Hydraulic circuit controlling preferred movement of moveable arm to lift or rotate |
| CN103541395A (en) * | 2013-09-26 | 2014-01-29 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator energy-conservation control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336844A (en) * | 2005-06-06 | 2006-12-14 | Shin Caterpillar Mitsubishi Ltd | Working machine |
| JP5841399B2 (en) * | 2011-10-14 | 2016-01-13 | 日立建機株式会社 | Hybrid construction machine and control method thereof |
-
2015
- 2015-10-30 CN CN201510729113.XA patent/CN105386477B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793042A (en) * | 2009-12-31 | 2010-08-04 | 福田雷沃国际重工股份有限公司 | Hydraulic loop device used for coordinating machine body rotation and movable arm swinging of digging machine |
| CN102400476B (en) * | 2011-10-28 | 2013-08-21 | 山河智能装备股份有限公司 | Hydraulic circuit controlling preferred movement of moveable arm to lift or rotate |
| CN103541395A (en) * | 2013-09-26 | 2014-01-29 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator energy-conservation control system |
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| CN105386477A (en) | 2016-03-09 |
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