CN108978770A - The hydraulic oil-feeding control system of excavator and excavator - Google Patents
The hydraulic oil-feeding control system of excavator and excavator Download PDFInfo
- Publication number
- CN108978770A CN108978770A CN201810673749.0A CN201810673749A CN108978770A CN 108978770 A CN108978770 A CN 108978770A CN 201810673749 A CN201810673749 A CN 201810673749A CN 108978770 A CN108978770 A CN 108978770A
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- Prior art keywords
- control
- accessory
- bound
- valve
- pump
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- 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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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
- 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
-
- 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
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
Abstract
The present invention relates to excavators, to solve the problems, such as that existing excavator needs switching working mode when using auxiliary equipment；A kind of hydraulic oil-feeding control system of excavator, including left pump, right pump, attached control bound, the first control bound group, the second control bound group, accessory manipulation device, distributing valve, control device are provided；It is left to pump through distributing valve individually to attached control bound fuel feeding when accessory manipulation device has control action, it is right to pump to the second control bound group fuel feeding and pass through distributing valve to the first control bound group fuel feeding；It is left to pump through distributing valve to the first independent fuel feeding of control bound group when accessory manipulation device does not have control action, it is right to pump to the independent fuel feeding of the second control bound group.In the present invention, when manipulating accessory manipulation device, it can realize attached control bound independent oil supply automatically by switching working mode, good operating experience and composition operation performance are provided.
Description
Technical field
The present invention relates to a kind of excavators, more specifically to a kind of hydraulic oil-feeding control system of excavator and excavation
Machine.
Background technique
As the king of engineering machinery, for excavator other than it can be equipped with scraper bowl and carry out digging operation, also mountable type is rich
Rich auxiliary equipment is crushed, turns round and the multi-mode operations such as cut, cut.In excavator hydraulic system, there is bucket cylinder, dipper
The hydraulic execution units such as oil cylinder, boom cylinder, rotary motor, left running motor, right running motor, and carrying out a certain operation
And optional attachment hydraulics.These corresponding hydraulic execution units have scraper bowl connection control bound, dipper connection control bound, move
Arm joins control bound, revolution joins control bound, left lateral walks to join control bound, right lateral walks to join control bound, auxiliary equipment joint control system
Main valve etc..On board a dredger, why fuel feeding, the usually left pump of setting two and right pump two reasonably are carried out to these hydraulic execution units
A hydraulic pump joins wherein left pump walks to join control bound, swing arm connection control bound, scraper bowl connection control bound and auxiliary equipment with left lateral
The oil inlet of control bound connects, and realizes to left running motor, boom cylinder, bucket cylinder and auxiliary equipment fuel feeding；Right pump
Oil outlet walks to join control bound and connect realization to rotary motor, dipper with revolution connection control bound, dipper connection control bound, right lateral
The hydraulic execution unit fuel feeding such as oil cylinder, right running motor.Wherein left lateral walks to join control bound, swing arm connection control bound, scraper bowl connection
Control bound and auxiliary equipment connection control bound are relationships in parallel；Revolution connection control bound, dipper connection control bound, right lateral are walked
Joining control bound is relationship arranged side by side.
The structure type of excavator hydraulic system fuel feeding, which has the disadvantage that, at present is equipped with auxiliary equipment on excavator
When, auxiliary equipment is fuel feeding in parallel with other hydraulic execution units, when carrying out composite move, since load changes, is caused each
Movement influences each other, and operability is poor.In order to solve this problem, excavator is by being arranged different operating modes at present, wherein one
The drawbacks of kind is attached mode, carries out accessory operation under unafilliated mode is have uninterrupted to adjust function in accessory operating mode
Can (adjustable in the display), work if not switching accessory and can default always in maximum stream flow, it is excessive flow occur, pressure damage
Lose the problems such as big.Require operator that the operating mode of excavator is switched to Dual-pump flow-converging fuel feeding when excavator installs auxiliary equipment
Mode.But since many operators do not switch the habit of excavator operating mode, accessory is often carried out under unafilliated mode
Operation cannot play system optimal performance, influence operating experience.
Summary of the invention
The technical problem to be solved by the present invention is to switch operating mould is needed when using auxiliary equipment for existing excavator
The problem of formula, and a kind of hydraulic oil-feeding control system of excavator and excavator are provided, so that excavator is made using auxiliary equipment
Automatically switch excavator hydraulic fuel feeding mode when industry, reduce user's learning cost, improves operating experience.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of hydraulic oil-feeding control system of excavator,
Including left pump, right pump, attached control bound, the first control bound group of the multiple control bound parallel connections of each freedom and the second control
The accessory manipulation device of main valve group, the control attached control bound；It is characterized by comprising distributing valve, for detecting accessory
Manipulation device control action and the control device that distributing valve working position is controlled according to the control action of accessory manipulation device；The left side
Pump connect with the distributing valve, it is described it is right pump while being connect with distributing valve and the second control bound group by hydraulic fluid port, it is described attached
Connection control bound and the first control bound group are connect with the distributing valve by hydraulic fluid port；When accessory manipulation device has manipulation dynamic
When making, the left pump by distributing valve individually to the attached control bound fuel feeding, it is described right to pump to the second control bound group
Fuel feeding and by the distributing valve to the first control bound group fuel feeding；When accessory manipulation device does not have control action, institute
Left pump is stated by the distributing valve to the independent fuel feeding of the first control bound group, it is described right to pump to the second control bound group
Independent fuel feeding.
Further, in the hydraulic oil-feeding control system of above-mentioned excavator, the distributing valve is two-position four-way valve, the distribution
The A mouth of valve, B mouthfuls, C mouthfuls, D mouthfuls correspond to it is left pump, it is right pump, the first control bound group by hydraulic fluid port, attached control bound by hydraulic fluid port
Connection；There is accessory manipulation device distributing valve when control action to be in left position and A mouthfuls and D mouthfuls conductings, B mouthfuls and C mouthfuls of conductings；
Accessory manipulation device does not have distributing valve when control action to be in right position and A mouthfuls and C mouthfuls conductings, B mouthfuls and D mouthfuls of cut-offs.
Further, in the hydraulic oil-feeding control system of above-mentioned excavator, the control device be shuttle valve, the two of the shuttle valve
A oil inlet end passes through pipeline respectively and connect with guide's hydraulic control end at the attached control bound both ends, the oil outlet of the shuttle valve
It is connect with the hydraulic control end of the distributing valve.
Further, in the hydraulic oil-feeding control system of above-mentioned excavator, the control device includes controller and controller
Connection is for incuding whether accessory manipulation device has the sensing device of control action, control terminal to connect electromagnetism with the controller
Valve, the solenoid valve are arranged on the control oil circuit at distributing valve hydraulic control end.
Further, in the hydraulic oil-feeding control system of above-mentioned excavator, the accessory manipulation device include with it is described attached
The accessory control pilot valve of connection control bound hydraulic control end connection and the accessory that pilot valve is controlled for manipulating the accessory control foot
It steps on.The sensing device is two pressure sensors on the two-way guide's output circuit for be arranged in the accessory control pilot valve,
The pressure detected by any one pressure sensor is determined as that the accessory manipulation device has manipulation when being greater than preset value
Movement.Or the sensing device is that setting controls foot-operated angle of rotation for detecting the accessory on accessory control is foot-operated
The angular transducer of degree.
Or in the above-mentioned hydraulic oil-feeding control system of excavator, the accessory manipulation device includes electric control handle, the control
Device processed includes that the controller connecting with the electric control handle, control terminal connect solenoid valve, the solenoid valve with the controller
It is arranged on the control oil circuit at distributing valve hydraulic control end.
Further, in the hydraulic oil-feeding control system of above-mentioned excavator, the first control bound group includes a left side in parallel
Walking connection control bound, swing arm connection control bound, scraper bowl join control bound；The second control bound group includes revolution in parallel
Connection control bound, dipper connection control bound, right lateral are walked to join control bound.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of excavator, it is characterised in that before including
The hydraulic oil-feeding control system of the excavator stated.
Compared with prior art, the present invention being manipulated in accessory manipulation device with accessory in oil-feeding control system of the present invention
When movement, without operator intervene, accessory operating mode can be switched to automatically by distributing valve, realize attached control bound with
Other job control main valves are separated by left pump independent oil supply, provide good operating experience and composition operation performance.
Detailed description of the invention
Fig. 1 is the hydraulic oil-feeding control system of excavator of the present invention.
Parts title and serial number in figure:
Hydraulic oil container 1, left pump 2, the 3, second control bound group 4 of right pump, revolution connection control bound 41, dipper join control bound
42, right lateral walks to join control bound 43, the first control bound group 5, scraper bowl connection control bound 51, swing arm connection control bound 52, left lateral
It walks to join control bound 53, attached control bound 6, accessory to control foot-operated 7, pressure sensor 8, controller 9, solenoid valve 10, divide
With valve 11.
Specific embodiment
Illustrate specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, the hydraulic oil-feeding control system of excavator in the present embodiment, is used for excavator, the control system packet
Include hydraulic oil container 1, left pump 2, right pump 3, attached control bound 6, the first control bound group 5, the second control bound group 4, accessory
Manipulation device, distributing valve 11, control device.Left pump 2 and right pump 3 by engine driving and the draw oil from hydraulic oil container 1,
It is exported from respective pumping hole.
First control bound group 5 walks to join control bound 53 by left lateral in parallel, swing arm joins control bound 52, scraper bowl joint control system
Main valve 51 is constituted, and the second control bound group 4 walks connection by revolution connection control bound 41 in parallel, dipper connection control bound 42, right lateral
Control bound 43 is constituted.
Accessory manipulation device is for manipulating attached control bound 6 comprising accessory controls pilot valve and manipulation accessory control
The accessory control foot-operated 7 of pilot valve processed.
Control device includes 9, two pressure sensors 8 of controller, and control terminal connect solenoid valve 10, electromagnetism with controller 9
Valve 10 is arranged on the control oil circuit at 11 hydraulic control end of distributing valve.The two of accessory control pilot valve are arranged in two pressure sensors 8
On the guide's output circuit of road.The pressure detected by any one pressure sensor 8 is determined as the category when being greater than preset value
Having manipulation device has control action.
Distributing valve 11 be two-position four-way valve, A mouth of distributing valve, B mouthful, C mouthful, D mouthful corresponding to it is left pump 2, it is right pump 3, first control
Main valve group 5 processed is connected by hydraulic fluid port, attached control bound 6 by hydraulic fluid port.When distributing valve 11 is in left position A mouthfuls with D mouthful be connected,
B mouthfuls are connected with C mouthfuls；End with C mouthfuls of conductings, B mouthfuls with D mouthfuls for A mouthfuls when distributing valve 11 is in right position.
In the present embodiment, when accessory manipulation device does not have control action, controller 9 controls solenoid valve 10 and is in cut-off
Position, distributing valve 11 are in right position, and left pump 2 is walked by A mouth, the C mouthfuls of left lateral into the first control bound group 5 of distributing valve 11 at this time
Join control bound 53, swing arm connection control bound 52, scraper bowl and join 51 fuel feeding of control bound, drives left running motor, boom cylinder, shovel
The hydraulic execution unit movement of the oil cylinder etc. that struggles against.Revolution of the right pump 3 directly into the second control bound group 4 joins control bound 41, dipper
Connection control bound 42, right lateral walk to join 43 fuel feeding of control bound, realize that rotary motor, bucket arm cylinder, right running motor etc. are hydraulic and hold
Row component fuel feeding.
When operator, which tramples accessory control, rides 7, accessory, which controls foot-operated 7 drive accessory control pilot valves, makes its export work
Pilot control oil for attached 6 hydraulic control end of control bound.Pressure sensor 8 detects the elder generation of accessory control pilot valve output
It leads the pressure of pressure oil and is converted into electric signal and pass to controller 9, controller 9 determines that accessory manipulation device has manipulation according to this
Movement, so that controlling solenoid valve 10 is at conducting position, distributing valve 11 works in left position, at this time 2 A by distributing valve of left pump
Mouthful, D mouthfuls to the independent fuel feeding of attached control bound 6, for driving accessory.Right pump 3 is to the same of 4 fuel feeding of the second control bound group
When also pass through distributing valve 11 B mouth and C mouthfuls to 5 fuel feeding of the first control bound group.In the present embodiment, the hydraulic fuel feeding control of excavator
Whether system processed has control action according to accessory manipulation device and switches over automatically, and intervenes without operator, realizes attached
Belong to connection control bound to separate with other job control main valves by left pump independent oil supply, good operating experience and composition operation are provided
Performance.
In the present embodiment, setting can also be used to control in accessory and control foot-operated angle of rotation for detecting accessory on foot-operated
The angular transducer of degree substitutes pressure sensor, operator trample accessory control it is foot-operated when, accessory control is foot-operated can rotate it is certain
Angle realizes the control action of accessory manipulation device detected by controller to trigger angle sensor.
In the present embodiment, accessory manipulation device can also be the electric control gear including electric control handle, electric control handle and control
System connection, when operator manipulates electric control handle, the electric signal for being used to control attached control bound of electric control handle output
It is transferred to controller, realizes the control action of accessory manipulation device detected by controller.
In the present embodiment, control device can also use a shuttle valve to substitute.Two oil inlet ends of shuttle valve pass through respectively
Pipeline is connect with guide's hydraulic control end at attached control bound both ends, and the hydraulic control end of the oil outlet of shuttle valve and the distributing valve connects
It connects.When accessory manipulation device manipulates attached control bound, the hydraulic control signal at attached control bound both ends is passed by shuttle valve
It is handed to the control terminal of distributing valve, so that distributing valve is in left position, to realize left pump individually to attached control bound fuel feeding.
Claims (10)
1. a kind of hydraulic oil-feeding control system of excavator, including left pump, right pump, attached control bound, the multiple controls of each freedom
The the first control bound group and the second control bound group of main valve parallel connection, the accessory of the control attached control bound manipulate dress
It sets；It is characterized by comprising distributing valves, the manipulation for detecting accessory manipulation device control action and according to accessory manipulation device
The control device of action control distributing valve working position；The left pump is connect with the distributing valve, the right pump while and distributing valve
With being connected by hydraulic fluid port for the second control bound group, the attached control bound and the first control bound group by hydraulic fluid port and institute
State distributing valve connection；When accessory manipulation device has control action, the left pump is by distributing valve individually to described attached
Control bound fuel feeding, it is described right to pump to the second control bound group fuel feeding and by the distributing valve to the first control bound group
Fuel feeding；When accessory manipulation device does not have control action, the left pump is by the distributing valve to the first control bound group
Independent fuel feeding, it is described right to pump to the independent fuel feeding of the second control bound group.
2. the hydraulic oil-feeding control system of excavator according to claim 1, it is characterised in that the distributing valve is two four
Port valve, the A mouth of the distributing valve, B mouthfuls, C mouthfuls, D mouthfuls correspond to that left pump, right pump, the first control bound group is by hydraulic fluid port, attached joint control
Main valve processed is connected by hydraulic fluid port；There is accessory manipulation device distributing valve when control action to be in left position and A mouthfuls and D mouthfuls conductings, B
Mouth and C mouthfuls of conductings；Accessory manipulation device does not have distributing valve when control action to be in right position and A mouthfuls and C mouthfuls conductings, B mouthfuls and D
Mouth cut-off.
3. the hydraulic oil-feeding control system of excavator according to claim 1 or 2, it is characterised in that the control device is shuttle
Valve, two oil inlet ends of the shuttle valve pass through pipeline respectively and connect with guide's hydraulic control end at the attached control bound both ends,
The oil outlet of the shuttle valve is connect with the hydraulic control end of the distributing valve.
4. the hydraulic oil-feeding control system of excavator according to claim 1 or 2, it is characterised in that the control device includes
Controller, connect with controller for incude accessory manipulation device whether have the sensing device of control action, control terminal with it is described
Controller connects solenoid valve, and the solenoid valve is arranged on the control oil circuit at distributing valve hydraulic control end.
5. the hydraulic oil-feeding control system of excavator according to claim 4, it is characterised in that the accessory manipulation device packet
Include the accessory control pilot valve connecting with the attached control bound hydraulic control end and for manipulating the accessory control pilot valve
Accessory control it is foot-operated.
6. the hydraulic oil-feeding control system of excavator according to claim 5, it is characterised in that the sensing device is setting
Two pressure sensors on two-way guide's output circuit of accessory control pilot valve, when any one pressure sensor institute
The pressure detected is determined as that the accessory manipulation device has control action when being greater than preset value.
7. the hydraulic oil-feeding control system of excavator according to claim 5, it is characterised in that the sensing device is setting
The angular transducer of foot-operated rotational angle is controlled for detecting the accessory on accessory control is foot-operated.
8. the hydraulic oil-feeding control system of excavator according to claim 4, it is characterised in that the accessory manipulation device packet
Include electric control handle, the control device includes that the controller connecting with the electric control handle, control terminal are connect with the controller
Solenoid valve, the solenoid valve are arranged on the control oil circuit at distributing valve hydraulic control end.
9. the hydraulic oil-feeding control system of excavator according to claim 1, it is characterised in that the first control bound group
Walk to join control bound, swing arm connection control bound, scraper bowl connection control bound including left lateral in parallel；The second control bound group packet
Revolution connection control bound in parallel, dipper connection control bound, right lateral is included to walk to join control bound.
10. a kind of excavator, it is characterised in that include the hydraulic fuel feeding control of excavator described in any one of claim 1 to 9
System processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673749.0A CN108978770B (en) | 2018-06-27 | 2018-06-27 | Excavator hydraulic pressure oil supply control system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673749.0A CN108978770B (en) | 2018-06-27 | 2018-06-27 | Excavator hydraulic pressure oil supply control system and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108978770A true CN108978770A (en) | 2018-12-11 |
| CN108978770B CN108978770B (en) | 2021-05-14 |
Family
ID=64538945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810673749.0A Active CN108978770B (en) | 2018-06-27 | 2018-06-27 | Excavator hydraulic pressure oil supply control system and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108978770B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404939A (en) * | 2022-09-29 | 2022-11-29 | 三一重机有限公司 | Control method and device of hydraulic system, hydraulic system and excavator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150248A1 (en) * | 1981-12-18 | 1983-07-14 | Xaver Fendt & Co, 8952 Marktoberdorf | Hydraulic system |
| CN102720243A (en) * | 2012-07-12 | 2012-10-10 | 熔盛机械有限公司 | Excavator flow control method |
| JP2014118984A (en) * | 2012-12-13 | 2014-06-30 | Kobelco Contstruction Machinery Ltd | Hydraulic circuit for construction machine |
| CN105275029A (en) * | 2014-06-19 | 2016-01-27 | 上海派司尼科技发展有限公司 | Excavator main pump flow electric control method and system, and excavator |
| CN105605014A (en) * | 2016-02-25 | 2016-05-25 | 柳州柳工挖掘机有限公司 | Hydraulic control system of extractor accessory |
| CN105714873A (en) * | 2016-02-17 | 2016-06-29 | 柳州柳工挖掘机有限公司 | Hydraulic control system and control method for excavators |
| CN106049582A (en) * | 2016-07-14 | 2016-10-26 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator ground operation rotating speed self-adaptation system |
-
2018
- 2018-06-27 CN CN201810673749.0A patent/CN108978770B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150248A1 (en) * | 1981-12-18 | 1983-07-14 | Xaver Fendt & Co, 8952 Marktoberdorf | Hydraulic system |
| CN102720243A (en) * | 2012-07-12 | 2012-10-10 | 熔盛机械有限公司 | Excavator flow control method |
| JP2014118984A (en) * | 2012-12-13 | 2014-06-30 | Kobelco Contstruction Machinery Ltd | Hydraulic circuit for construction machine |
| CN105275029A (en) * | 2014-06-19 | 2016-01-27 | 上海派司尼科技发展有限公司 | Excavator main pump flow electric control method and system, and excavator |
| CN105714873A (en) * | 2016-02-17 | 2016-06-29 | 柳州柳工挖掘机有限公司 | Hydraulic control system and control method for excavators |
| CN105605014A (en) * | 2016-02-25 | 2016-05-25 | 柳州柳工挖掘机有限公司 | Hydraulic control system of extractor accessory |
| CN106049582A (en) * | 2016-07-14 | 2016-10-26 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator ground operation rotating speed self-adaptation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404939A (en) * | 2022-09-29 | 2022-11-29 | 三一重机有限公司 | Control method and device of hydraulic system, hydraulic system and excavator |
| CN115404939B (en) * | 2022-09-29 | 2023-09-29 | 三一重机有限公司 | Control method and device of hydraulic system, hydraulic system and excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108978770B (en) | 2021-05-14 |
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