CN104805877B - A kind of flow control system of super-tonnage backacter dipper recovery - Google Patents
A kind of flow control system of super-tonnage backacter dipper recovery Download PDFInfo
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- CN104805877B CN104805877B CN201510143128.8A CN201510143128A CN104805877B CN 104805877 B CN104805877 B CN 104805877B CN 201510143128 A CN201510143128 A CN 201510143128A CN 104805877 B CN104805877 B CN 104805877B
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Abstract
The invention discloses a kind of flow control system of super-tonnage backacter dipper recovery, belong to flow control hydraulic system technical field, including counterbalance valve (4), regenerate check valve (2), solenoid-operated proportional valve group (3), flow regeneration valve (1) and pressure sensor (5), pressure sensor (5) is arranged on the big intracavitary of bucket arm cylinder, the A mouths of flow regeneration valve (1) are connected to the small chamber of bucket arm cylinder, the T mouths of flow regeneration valve (1) are connected to counterbalance valve (4), the Pa mouths of flow regeneration valve (1) are sequentially connected to electric proportional valve (31) and solenoid directional control valve (32) in solenoid-operated proportional valve group (3), regeneration check valve (2) is connected between the B mouths of flow regeneration valve (1) and the big chamber of bucket arm cylinder.Beneficial effect is that of avoiding during dipper reclaims, and the big chamber underfed of bucket arm cylinder causes the emptying phenomenon of bucket arm cylinder.
Description
Technical field
The present invention relates to a kind of flow control system of super-tonnage backacter dipper recovery, belongs to flow control liquid
Press systems technology field.
Background technology
The hydraulic system of super-tonnage excavator is made up of the more valve systems of more pumps, each equipment and oil return action, all
By more oil pump feeds, the method for more valves shunting is realized.When excavator completes an excavation action, lifting, revolution, discharging terminate
Afterwards, next excavation action is carried out.Dipper excavate be backacter main excavation mode, when excavator discharging terminates,
Dipper will do recovery action.In middle digging hydraulic system, the flow regeneration valve of dipper is all set in valve, in removal process, by
Be more than the pressure of the big chamber of dipper in the pressure of the small chamber of bucket arm cylinder, from small chamber by proprietary regeneration valve toward big intracavitary repairing.It is super
Without proprietary flow regeneration valve inside the main valve of large-tonnage excavator, during dipper reclaims, it is likely that due to big chamber stream
Amount deficiency, cause the emptying phenomenon of bucket arm cylinder.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of super-tonnage backacter dipper recovery
Flow control system, realize that dipper flow regenerates, avoid the emptying phenomenon of bucket arm cylinder.
To achieve these goals, the technical solution adopted by the present invention is：A kind of super-tonnage backacter dipper returns
The flow control system of receipts, including counterbalance valve, regeneration check valve, solenoid-operated proportional valve group, in addition to flow regeneration valve and pressure pass
Sensor, pressure sensor are arranged on the big intracavitary of bucket arm cylinder, and the A mouths of flow regeneration valve are connected to the small chamber of bucket arm cylinder, flow
The T mouths of regeneration valve are connected to counterbalance valve, the Pa mouths of flow regeneration valve be sequentially connected to electric proportional valve in solenoid-operated proportional valve group and
Solenoid directional control valve, regeneration check valve are connected between the B mouths of flow regeneration valve and the big chamber of bucket arm cylinder.
The flow regeneration valve, regeneration check valve and counterbalance valve have two respectively.
The flow regeneration valve is arranged on the equipment outside main valve.
The beneficial effects of the invention are as follows：By the electric handle travel for controlling dipper to withdraw, make excavator dynamic in dipper recovery
The effect of energy-conservation by the gravity of dipper, is only reached by the flow regeneration of flow regeneration valve by single pump single valve fuel feeding when making；
And pressure size is detected by sensor, the keying of excavator flow regeneration valve is judged, allows excavator according to dipper
Posture it is in good time switch to more oil pump feeds automatically, to complete the recovery of dipper or excavation, avoid during dipper reclaims, bucket
The big chamber underfed of rod oil cylinder causes the emptying phenomenon of bucket arm cylinder.
Brief description of the drawings
Fig. 1 is the connection diagram of the present invention.
In figure：1st, flow regeneration valve, 2, regeneration check valve, 3, solenoid-operated proportional valve group, 31, electric proportional valve, 32, electromagnetic switch
Valve, 4, counterbalance valve, 5, pressure sensor.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1：The present invention includes counterbalance valve 4, regeneration check valve 2, solenoid-operated proportional valve group 3, in addition to flow regeneration
Valve 1 and pressure sensor 5, pressure sensor 5 are arranged on the big intracavitary of bucket arm cylinder, and the A mouths of flow regeneration valve 1 are connected to dipper oil
The small chamber of cylinder, the T mouths of flow regeneration valve 1 are connected to counterbalance valve 4, and the Pa mouths of flow regeneration valve 1 are sequentially connected to electromagnetic proportional valve
Group 3 in electric proportional valve 31 and solenoid directional control valve 32, regeneration check valve 2 be connected to flow regeneration valve 1 B mouths and bucket arm cylinder it is big
Between chamber.
The flow regeneration valve 1, regeneration check valve 2 and counterbalance valve 4 have two respectively, preferably to meet the present invention's
Design requirement.
The flow regeneration valve 1 is arranged on the equipment outside main valve.
In use, dipper carries out recovery action to the present invention by flow regeneration valve 1, and the speed of recovery action is by struggling against
The stroke that bar reclaims first conductive handle determines that dipper reclaims the flow and flow regeneration valve 1 that first conductive handle controls main pump simultaneously
Open area size, when dipper, which reclaims first conductive handle, recovery action, if meeting the unlocking condition of flow regeneration valve 1,
Now dipper recovery is by single oil pump feed, if the proportionate relationship of dipper stroke K and main pump flow is Kx1, dipper recovery guide's electric hand
For handle by controlling the size of the electric signal of electric proportional valve 31 in solenoid-operated proportional valve group 3, electric proportional valve 31 controls the Pa of flow regeneration valve 1
Mouth size, Pa mouths size relation proportional to the first conductive handle of dipper recovery.Solenoid directional control valve 32 plays safe effect, prevents
When electric proportional valve 31 fails, the malfunction of flow regeneration valve 1；It should be noted that in single pump single valve fuel feeding, valve core of main valve
Functional Characteristics are the small chambers of dipper only by regeneration valve oil return.Due to the effect that dipper self gravitation declines, the small chamber of bucket arm cylinder
Pressure be more than the pressure of big chamber, when the fluid deficiency of big chamber, A mouths that the hydraulic oil of the small chamber of dipper passes through flow regeneration valve 1
Flow into, the big chamber of bucket arm cylinder is flowed into by B mouths and regeneration check valve 2, due to being connected between flow regeneration valve 1 and bucket arm cylinder
There is regeneration check valve 2, can be by regenerating check valve 2 by dipper oil when the big cavity pressure of bucket arm cylinder is less than small cavity pressure
Big chamber repairing of the small chamber of cylinder toward bucket arm cylinder.When dipper is recovered to vertical posture or scraper bowl crown contacts with excavation surface, bucket
The big cavity pressure rise of bar, when being increased to set pressure, pressure sensor 5 triggers, the dead electricity of solenoid-operated proportional valve group 3, flow regeneration valve 1
It is stopped, the bucket arm cylinder of excavator switchs to more oil pump feed patterns, needs the high power work of hydraulic system, and the flow of main pump is big
The small proportionate relationship with first conductive handle stroke changes, and the total flow of each main pump and the travel relationships of handle are Q=Kx1+
Kx2+ Kx3+ ..., the present invention detect the pressure in the big chamber of bucket arm cylinder by pressure sensor 5, judge flow regeneration valve 1
Open and close, to complete the withdrawal or excacation of the high-power dipper of excavator big flow.The present invention can in the removal process of dipper
To realize the reasonable control of main pump flow, in whole dipper removal process, according to the different postures of excavator boom, pass through pressure
The detection of force snesor 5, to realize distribution of the more valve systems of more pumps to flow in dipper removal process.
Claims (3)
1. a kind of flow control system of super-tonnage backacter dipper recovery, including counterbalance valve (4), regeneration check valve
(2), solenoid-operated proportional valve group (3), it is characterised in that also including flow regeneration valve (1) and pressure sensor (5), pressure sensor
(5) the big intracavitary of bucket arm cylinder is arranged on, the A mouths of flow regeneration valve (1) are connected to the small chamber of bucket arm cylinder, flow regeneration valve (1)
T mouths be connected to counterbalance valve (4), the Pa mouths of flow regeneration valve (1) are sequentially connected to the electric proportional valve in solenoid-operated proportional valve group (3)
(31) it is connected to solenoid directional control valve (32), regeneration check valve (2) between the B mouths of flow regeneration valve (1) and the big chamber of bucket arm cylinder.
2. a kind of flow control system of super-tonnage backacter dipper recovery according to claim 1, its feature
It is, the flow regeneration valve (1), regeneration check valve (2) and counterbalance valve (4) there are two respectively.
3. a kind of flow control system of super-tonnage backacter dipper recovery according to claim 1 or 2, it is special
Sign is that the flow regeneration valve (1) is arranged on the equipment outside main valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510143128.8A CN104805877B (en) | 2015-03-30 | 2015-03-30 | A kind of flow control system of super-tonnage backacter dipper recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510143128.8A CN104805877B (en) | 2015-03-30 | 2015-03-30 | A kind of flow control system of super-tonnage backacter dipper recovery |
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| Publication Number | Publication Date |
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| CN104805877A CN104805877A (en) | 2015-07-29 |
| CN104805877B true CN104805877B (en) | 2018-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510143128.8A Active CN104805877B (en) | 2015-03-30 | 2015-03-30 | A kind of flow control system of super-tonnage backacter dipper recovery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482089A (en) * | 2021-07-13 | 2021-10-08 | 徐工集团工程机械股份有限公司 | Flow regeneration valve group, hydraulic system and excavator |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3380074B2 (en) * | 1994-12-26 | 2003-02-24 | 日立建機株式会社 | Construction Machine Operation System |
| US6422804B1 (en) * | 2000-02-18 | 2002-07-23 | Deere & Company | Inertia load dampening hydraulic system |
| KR20050000820A (en) * | 2003-06-25 | 2005-01-06 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | recycling device and control method of hydraulic energy |
| DE102011008709B4 (en) * | 2011-01-17 | 2021-11-04 | Linde Hydraulics Gmbh & Co. Kg | Control valve device for actuating a double-acting stick cylinder of a mobile work machine |
| CN102518156B (en) * | 2012-01-04 | 2014-04-16 | 江苏柳工机械有限公司 | System for accurately controlling the rotation of excavation end of loader digger |
| CN202577399U (en) * | 2012-05-22 | 2012-12-05 | 熔盛机械有限公司 | Movable arm lifting priority control system in medium-sized hydraulic excavator negative flow system |
| CN102864799B (en) * | 2012-10-22 | 2015-01-14 | 三一重机有限公司 | Bucket rod regeneration structure and excavator |
| CN103851040B (en) * | 2014-03-14 | 2017-03-22 | 三一重机有限公司 | Energy regeneration system of excavator and excavator |
| CN204676619U (en) * | 2015-03-30 | 2015-09-30 | 徐州徐工挖掘机械有限公司 | The flow control system that super-tonnage backacter dipper reclaims |
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2015
- 2015-03-30 CN CN201510143128.8A patent/CN104805877B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482089A (en) * | 2021-07-13 | 2021-10-08 | 徐工集团工程机械股份有限公司 | Flow regeneration valve group, hydraulic system and excavator |
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| CN104805877A (en) | 2015-07-29 |
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Effective date of registration: 20190322 Address after: 221000 39 Gaoxin Road, Xuzhou Economic Development Zone, Jiangsu Patentee after: Xuzhou Xugong Mining Machinery Co., Ltd. Address before: 221000 39 Gaoxin Road, Xuzhou Economic Development Zone, Jiangsu Patentee before: XCMG Excavator Machinery Co., Ltd. |
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| TR01 | Transfer of patent right |