CN110359516A - Descending movable arm of excavator hydraulic control system and excavator - Google Patents
Descending movable arm of excavator hydraulic control system and excavator Download PDFInfo
- Publication number
- CN110359516A CN110359516A CN201910668953.8A CN201910668953A CN110359516A CN 110359516 A CN110359516 A CN 110359516A CN 201910668953 A CN201910668953 A CN 201910668953A CN 110359516 A CN110359516 A CN 110359516A
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- Prior art keywords
- excavator
- spool
- valve
- swing arm
- dipper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000007423 decrease Effects 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims description 38
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 75
- 239000002131 composite material Substances 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
-
- 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
Abstract
The present invention proposes a kind of descending movable arm of excavator hydraulic control system and excavator, belongs to excavator hydraulic oil road technique field.This descending movable arm of excavator hydraulic control system includes hydraulic pump, swing arm spool, boom cylinder, main oil return line, dipper spool, bucket arm cylinder, keeps valve and 3-position 4-way directional control valve；Hydraulic pump connects swing arm spool, dipper spool, boom cylinder, bucket arm cylinder and main oil return line by the road；Valve and 3-position 4-way directional control valve is kept to connect boom cylinder, bucket arm cylinder, dipper spool and main oil return line by the road.Beneficial effects of the present invention: under the premise of not influencing other movements of excavator, in " swing arm decline dipper excavates " composite move and " swing arm decline dipper turns up " composite move, excavator power loss is reduced to reduce fuel consumption rate, while reducing excavator power loss, the working efficiency of excavator is improved.
Description
Technical field
The present invention relates to excavator hydraulic oil road technique fields, more particularly to a kind of descending movable arm of excavator hydraulic control
System and excavator.
Background technique
Energy problem has risen to National Security Strategy height, and production of energy and using is caused a series of global
The environmental problem also common concern by countries in the world.It is energy saving, to improve energy efficiency etc. will solve this series of to ask
The effective countermeasure of topic.Hydraulic excavator market competition, client are also higher and higher to the job requirements of excavator, working efficiency
High, low fuel consumption rate is that everybody pursues unremitting target.
At present to the Study on energy saving and application of excavator energy regenerating, mainly to excavator swing arm potential energy, revolution
Braking can be carried out recycling, and the energy of recycling is first passed through accumulator storage, then releases the other movements of supply again.In this way,
Although power loss can be reduced to a certain extent, fuel consumption rate is reduced, but it is possible to the process measuring storage and discharging again
Middle power also occurs that loss；Also, there is no significant changes for the working efficiency excavated；In addition, having accumulator storage at present
Energy recycling system, structure is more complex, higher cost, it is difficult to promote and apply.
Summary of the invention
The purpose of the present invention is to provide a kind of descending movable arm of excavator hydraulic control system and excavator, solution " is being dropped
The working efficiency of excavator is improved while low excavator power loss " the technical issues of.
The present invention provides a kind of descending movable arm of excavator hydraulic control system, including hydraulic pump, swing arm spool, swing arm oil
Cylinder, dipper spool, bucket arm cylinder, keeps valve and 3-position 4-way directional control valve at main oil return line；Hydraulic pump is through the first main oil inlet
The oil inlet of piping connection swing arm spool, rod chamber of the swing arm spool through the first fluid pressure line connection boom cylinder, boom cylinder
Rodless cavity connect swing arm spool through the second fluid pressure line, the oil outlet of swing arm spool connects main oil return line, and swing arm spool connects
It is connected to swing arm upward leader oil circuit and swing arm decline guide's oil circuit；Hydraulic pump through the second main oil inlet pipe road connection bucket rod valve core into
Hydraulic fluid port, dipper spool third fluid pressure line connect the rodless cavity of bucket arm cylinder, and the rod chamber of bucket arm cylinder is through the 4th fluid pressure line
Connect bucket rod valve core, the oil outlet of dipper spool connects main oil return line, dipper spool be connected with dipper excavate guide's oil circuit and
Dipper turns up guide's oil circuit；The rodless cavity of boom cylinder adjusts the oil inlet that piping connection keeps valve through first, keeps going out for valve
The first hydraulic fluid port that hydraulic fluid port adjusts piping connection 3-position 4-way directional control valve through second, the second oil of 3-position 4-way directional control valve
Mouth adjusts the oil inlet of pipeline connection bucket stem valve core through third, and the third hydraulic fluid port of 3-position 4-way directional control valve is through the 4th regulation pipe
Road connects the rodless cavity of bucket arm cylinder, and the 4th hydraulic fluid port of 3-position 4-way directional control valve adjusts the main oil return pipe of piping connection through the 5th
Road, keeps valve to be connected with swing arm decline guide's oil circuit, and 3-position 4-way directional control valve is connected with swing arm decline dipper and excavates guide
Oil circuit and swing arm decline dipper turn up guide's oil circuit.
Further, the hydraulic pump includes front pump and rear pump, and front pump connects the first main oil inlet pipe road, rear pump connection second
Main oil inlet pipe road.
Further, the swing arm spool and dipper spool are integrated on the first valve seat.
Further, the holding valve and 3-position 4-way directional control valve are integrated on the second valve seat.
Further, second valve seat is assemblied on the first valve seat.
Further, the first main oil inlet pipe road is provided with check valve.
Further, the second main oil inlet pipe road is provided with check valve.
Further, the third regulation pipe road is provided with check valve.
The present invention also provides a kind of excavators, including above-mentioned descending movable arm of excavator hydraulic control system.
Compared with prior art, descending movable arm of excavator hydraulic control system of the invention and excavator have the characteristics that
And advantage:
Descending movable arm of excavator hydraulic control system of the invention, is applied to excavator, does not change main valve (boom valve
Core, dipper spool are integrated on the first valve seat and are formed) internal structure, directly installed additional on main valve additional valve (keep valve, three
Four-way directional control valve is integrated on the second valve seat and is formed) and five adjusting pipelines is cooperated to can be realized, structure is simpler, transformation
Cost is relatively low, can promote and apply；It is compound " swing arm declines dipper and excavates " under the premise of not influencing other movements of excavator
When movement and " swing arm decline dipper turns up " composite move, excavator power loss is reduced to reduce fuel consumption rate, is being dropped
While low excavator power loss, the working efficiency of excavator is improved.
After a specific embodiment of the invention is read in conjunction with the figure, the features and advantages of the invention be will become clearer.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of descending movable arm of excavator of embodiment of the present invention hydraulic control system.
Specific embodiment
As shown in Figure 1, the present embodiment provides a kind of descending movable arm of excavator hydraulic control system, including hydraulic pump 1, swing arm
Spool 21, main oil return line 53, dipper spool 22, bucket arm cylinder 4, keeps valve 61 and 3-position 4-way direction controlling at boom cylinder 3
Valve 62 and matched fluid pressure line etc..
Hydraulic pump 1 includes front pump 11 and rear pump 12.Hydraulic pump 1 drives the hydraulic oil in fuel tank to pass through the swing arm on main valve 2
Spool 21 and dipper spool 22 respectively enter boom cylinder 3 and bucket arm cylinder 4.
Front pump 11 connects the oil inlet of swing arm spool 21 through the first main oil inlet pipe road 51, is arranged on the first main oil inlet pipe road 51
There are check valve, rod chamber of the swing arm spool 21 through the first fluid pressure line 71 connection boom cylinder 3, the rodless cavity warp of boom cylinder 3
Second fluid pressure line 72 connects swing arm spool 21, and the oil outlet of swing arm spool 21 connects main oil return line 53.Swing arm spool 21 connects
It is connected to swing arm upward leader oil circuit and swing arm decline guide's oil circuit.
Pump 12 connects the oil inlet of bucket rod valve core 22 through the second main oil inlet pipe road 52 afterwards, is arranged on the second main oil inlet pipe road 52
There is check valve, dipper spool 22 connects the rodless cavity of bucket arm cylinder 4, the rod chamber warp of bucket arm cylinder 4 through third fluid pressure line 73
4th fluid pressure line 74 connects bucket rod valve core 22, and the oil outlet of dipper spool 22 connects main oil return line 53.Dipper spool 22 connects
It is connected to dipper and excavates guide's oil circuit and dipper and turn up guide's oil circuit.
The rodless cavity of boom cylinder 3 adjusts the oil inlet that the connection of pipeline 81 keeps valve 61 through first, keeps the fuel-displaced of valve 61
Mouthful the first hydraulic fluid port that pipeline 82 connects 3-position 4-way directional control valve 62 is adjusted through second, the of 3-position 4-way directional control valve 62
Two hydraulic fluid ports adjust the oil inlet that pipeline 83 connects bucket rod valve core 22 through third, and third adjusts and is provided with check valve on pipeline 83, and three
The third hydraulic fluid port of position four-way directional control valve 62 adjusts the rodless cavity that pipeline 84 connects bucket arm cylinder 4,3-position 4-way side through the 4th
Main oil return line 53 is connected through the 5th adjusting pipeline 85 to the 4th hydraulic fluid port of control valve 62.In 3-position 4-way directional control valve 62,
When spool is in middle position, whole hydraulic fluid port cuttings；When spool is in left position, the first hydraulic fluid port is connected to the second hydraulic fluid port；Work as spool
When in right position, the first hydraulic fluid port is connected to the second hydraulic fluid port, and third hydraulic fluid port is connected to the 4th hydraulic fluid port.
Valve 61 is kept to be connected with swing arm decline guide's oil circuit, 3-position 4-way directional control valve 62 is connected with swing arm decline dipper
It excavates guide's oil circuit and swing arm decline dipper turns up guide's oil circuit.
In the present embodiment, swing arm spool 21 and dipper spool 22 are integrated in formation main valve 2 on the first valve seat, keep 61 He of valve
3-position 4-way directional control valve 62 is integrated in formation additional valve 6 on the second valve seat, and the second valve seat is assemblied on the first valve seat.This
In embodiment, do not change the internal structure of main valve 2 (excavator has component), directly installs additional valve 6 additional on main valve 2 and cooperate
(first adjusts that pipeline 81, second adjusts pipeline 82, third adjusts pipeline 83, the 4th adjusts pipeline 84 and for five adjusting pipelines
Five adjusting pipelines 85) it can be realized, structure is simpler, and improvement cost is lower, can promote and apply.
The present embodiment also provides a kind of excavator, including above-mentioned descending movable arm of excavator hydraulic control system.
The descending movable arm of excavator hydraulic control system of the present embodiment, the course of work are as described below.
(1) swing arm decline dipper excavates
When swing arm decline and dipper excavate linkage operation, swing arm declines dipper and excavates guide's oil circuit transmitting signal to three
Four-way directional control valve 62,62 spool of 3-position 4-way directional control valve are switched to left position, and swing arm declines guide's oil circuit and transmits signal
To valve 61 is kept, valve 61 is kept to open, swing arm declines guide's oil circuit transmitting signal to swing arm spool 21, and swing arm spool 21 is switched to
Right position, dipper excavate guide's oil circuit transmitting signal to dipper spool 22, and dipper spool 22 is switched to right position.At this point, boom cylinder 3
Rodless cavity in oil liquid in a part of oil liquid through the second fluid pressure line 72 enter swing arm spool 21, continue on through main oil return line
53 are back to fuel tank, and another part oil liquid adjusts pipeline 81 through first, valve 61, second is kept to adjust pipeline 82,3-position 4-way side
The oil inlet that pipeline 83 reaches dipper spool 22 is adjusted to control valve 62, third, and enters dipper oil through third fluid pressure line 73
The rodless cavity of cylinder 4 extends the telescopic rod of bucket arm cylinder 4 with faster speed, to improve dipper excavation speed.
(2) swing arm decline dipper turns up
When swing arm decline and dipper turn up when linking operation, swing arm decline dipper turns up guide's oil circuit transmitting signal to three
Four-way directional control valve 62,62 spool of 3-position 4-way directional control valve are switched to right position, and swing arm declines guide's oil circuit and transmits signal
To valve 61 is kept, valve 61 is kept to open, swing arm declines guide's oil circuit transmitting signal to swing arm spool 21, and swing arm spool 21 is switched to
Right position, dipper turn up guide's oil circuit transmitting signal to dipper spool 22, and dipper spool 22 is switched to left position.At this point, boom cylinder 3
Rodless cavity in oil liquid in a part of oil liquid through the second fluid pressure line 72 enter swing arm spool 21, continue on through main oil return line
53 are back to fuel tank, and another part oil liquid adjusts pipeline 81 through first, valve 61, second is kept to adjust pipeline 82,3-position 4-way side
Pipeline 83 is adjusted to control valve 62, third and reaches the oil inlet of dipper spool 22, and is continued on through the 4th fluid pressure line 74 and entered bucket
The rod chamber of rod oil cylinder 4 shrinks the telescopic rod of bucket arm cylinder 4 with faster speed；Meanwhile the oil liquid of 4 rodless cavity of bucket arm cylinder
In a part enter main oil return line 53 through the oil outlet of third fluid pressure line 73, dipper spool 22 and be back to fuel tank, it is another
Part oil liquid adjusts pipeline 84 through the 4th and enters 3-position 4-way directional control valve 62, and adjusts pipeline 85, main oil return pipe through the 5th
Road 53 is back to fuel tank, to reduce the return oil pressure of 4 rodless cavity side of bucket arm cylinder, further speeds up 4 telescopic rod of rod oil cylinder
Contraction speed, to improve dipper Eversion velocity.
The descending movable arm of excavator hydraulic control system of the present embodiment, is applied to excavator, is not influencing excavator
Under the premise of other movements, in " swing arm decline dipper excavates " composite move and " swing arm decline dipper turns up " composite move
When, excavator power loss is reduced to reduce fuel consumption rate, while reducing excavator power loss, improves excavator
Working efficiency.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (9)
1. a kind of descending movable arm of excavator hydraulic control system, it is characterised in that: including hydraulic pump, swing arm spool, boom cylinder,
Main oil return line, bucket arm cylinder, keeps valve and 3-position 4-way directional control valve at dipper spool；Hydraulic pump is through the first main oil inlet pipe
Road connects the oil inlet of swing arm spool, and swing arm spool connects the rod chamber of boom cylinder through the first fluid pressure line, boom cylinder
Rodless cavity connects swing arm spool through the second fluid pressure line, and the oil outlet of swing arm spool connects main oil return line, the connection of swing arm spool
There are swing arm upward leader oil circuit and swing arm decline guide's oil circuit；Oil inlet of the hydraulic pump through the second main oil inlet pipe road connection bucket rod valve core
Mouthful, dipper spool third fluid pressure line connects the rodless cavity of bucket arm cylinder, and the rod chamber of bucket arm cylinder connects through the 4th fluid pressure line
Dipper spool is connect, the oil outlet of dipper spool connects main oil return line, and dipper spool is connected with dipper and excavates guide's oil circuit and bucket
Bar turns up guide's oil circuit；The rodless cavity of boom cylinder adjusts the oil inlet that piping connection keeps valve through first, keeps the fuel-displaced of valve
The first hydraulic fluid port that mouth adjusts piping connection 3-position 4-way directional control valve through second, the second hydraulic fluid port of 3-position 4-way directional control valve
The oil inlet of pipeline connection bucket stem valve core is adjusted through third, the third hydraulic fluid port of 3-position 4-way directional control valve adjusts pipeline through the 4th
The rodless cavity of bucket arm cylinder is connected, the 4th hydraulic fluid port of 3-position 4-way directional control valve adjusts the main oil return pipe of piping connection through the 5th
Road, keeps valve to be connected with swing arm decline guide's oil circuit, and 3-position 4-way directional control valve is connected with swing arm decline dipper and excavates guide
Oil circuit and swing arm decline dipper turn up guide's oil circuit.
2. descending movable arm of excavator hydraulic control system according to claim 1, it is characterised in that: the hydraulic pump includes
Front pump and rear pump, front pump connect the first main oil inlet pipe road, the second main oil inlet pipe road of rear pump connection.
3. descending movable arm of excavator hydraulic control system according to claim 1, it is characterised in that: the swing arm spool and
Dipper spool is integrated on the first valve seat.
4. descending movable arm of excavator hydraulic control system according to claim 3, it is characterised in that: the holding valve and three
Position four-way directional control valve is integrated on the second valve seat.
5. descending movable arm of excavator hydraulic control system according to claim 4, it is characterised in that: the second valve seat dress
Assigned on the first valve seat.
6. descending movable arm of excavator hydraulic control system according to claim 1, it is characterised in that: the first main oil inlet
Check valve is provided on pipeline.
7. descending movable arm of excavator hydraulic control system according to claim 1, it is characterised in that: the second main oil inlet
Check valve is provided on pipeline.
8. descending movable arm of excavator hydraulic control system according to claim 1, it is characterised in that: the third regulation pipe
Road is provided with check valve.
9. a kind of excavator, which is characterized in that including the hydraulic control of the described in any item descending movable arm of excavator of claim 1 to 8
System processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668953.8A CN110359516A (en) | 2019-07-24 | 2019-07-24 | Descending movable arm of excavator hydraulic control system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910668953.8A CN110359516A (en) | 2019-07-24 | 2019-07-24 | Descending movable arm of excavator hydraulic control system and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN110359516A true CN110359516A (en) | 2019-10-22 |
Family
ID=68220013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910668953.8A Pending CN110359516A (en) | 2019-07-24 | 2019-07-24 | Descending movable arm of excavator hydraulic control system and excavator |
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| CN (1) | CN110359516A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789824A (en) * | 2021-09-14 | 2021-12-14 | 江苏汇智高端工程机械创新中心有限公司 | Excavator bucket rod speed-increasing hydraulic system |
| CN114934552A (en) * | 2022-06-07 | 2022-08-23 | 徐州徐工矿业机械有限公司 | Energy-saving hydraulic system for working device of face shovel excavator |
| WO2024022460A1 (en) * | 2022-07-28 | 2024-02-01 | 徐州徐工矿业机械有限公司 | Hydraulic system and control method for leveling cylinder of face shovel hydraulic excavator |
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2019
- 2019-07-24 CN CN201910668953.8A patent/CN110359516A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789824A (en) * | 2021-09-14 | 2021-12-14 | 江苏汇智高端工程机械创新中心有限公司 | Excavator bucket rod speed-increasing hydraulic system |
| CN114934552A (en) * | 2022-06-07 | 2022-08-23 | 徐州徐工矿业机械有限公司 | Energy-saving hydraulic system for working device of face shovel excavator |
| CN114934552B (en) * | 2022-06-07 | 2023-12-19 | 徐州徐工矿业机械有限公司 | Energy-saving hydraulic system for working device of front shovel excavator |
| WO2024022460A1 (en) * | 2022-07-28 | 2024-02-01 | 徐州徐工矿业机械有限公司 | Hydraulic system and control method for leveling cylinder of face shovel hydraulic excavator |
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Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant before: LOVOL Engineering Machinery Group Co.,Ltd. Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant after: LOVOL Engineering Machinery Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Applicant before: QINGDAO LOVOL ENGINEERING MACHINERY Co.,Ltd. |