CN201193334Y - Three-pump confluence control device for dredger - Google Patents
Three-pump confluence control device for dredger Download PDFInfo
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- CN201193334Y CN201193334Y CNU2008201164085U CN200820116408U CN201193334Y CN 201193334 Y CN201193334 Y CN 201193334Y CN U2008201164085 U CNU2008201164085 U CN U2008201164085U CN 200820116408 U CN200820116408 U CN 200820116408U CN 201193334 Y CN201193334 Y CN 201193334Y
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- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a three-pump confluence control device of the excavator, and comprises a confluence valve arranged in the hydraulic circuit and hydraulic controllers. The three-pump confluence control device is characterized in that the confluence valve is equipped with the ratio adjustment, and the flow control end of the confluence valve is connected with the hydraulic controllers; the three-pump confluence control device also comprises pressure sensors which are respectively arranged in the pumps P1, P2 and P3; the output ends of the pressure sensors are respectively connected with the corresponding input end of the hydraulic controller; and the detection ends of hydraulic controller are respectively connected with the guide pressure sensors on the actuating elements which are driven by the pumps P1 and P2. The utility model acquires the data of measurement through the confluence valve with the ratio adjustment, according to each pressure sensor; the controller are used for judging the starting, closing and flow rate of the confluence valve; thus the utility model realizes the real-time and quantitative three-pump confluence, so that the excavator can adapt to the operation conditions; the operating efficiency is improved; and the energy consumption is reduced.
Description
Technical field
The utility model relates to a kind of control device of hydraulic circuit, is specifically related to the control device at control three pumps interflow in a kind of hydraulic crawler excavator.
Background technology
Hydraulic crawler excavator is widely used in the foundation dredging of building construction and the occasions such as cleaning, urban duct layings, construction of water conservancy works after the completion, has the maneuverability of constructing, advantage that efficient is high.Generally partly form by equipment, slewing equipment, running gear and hydraulic control device etc., described equipment is a device of directly finishing mining task, three parts are hinged forms by swing arm, dipper, scraper bowl etc., and swing arm rises and falls, dipper stretches and scraper bowl rotates and the slewing equipment revolution is controlled each hydraulic pump fuel feeding by control device through hydraulic circuit and realized.
Excavator hydraulic system generally has following executing agency: a left side, right lateral is walked motor, the rotary motor of getting on the bus, boom cylinder, bucket arm cylinder and bucket cylinder, by three pump (P1, P2, P3) circuit controls, it is the 3P3V system, 2P2V compares with double pump, control the revolution of excavator separately with the P3 pump, the soil-shifting operation, what raising was mechanical can be handling, but the P3 pump adopts little discharge capacity usually, the constant displacement pump of low-pressure or variable pump constitute (so that reduce consumption, simplification is to the combination control loop of pump), and safe pressure is than P1, the P2 pump hangs down a rank, when composite move (so-called composite move comprise 1. excavate compound: swing arm is little to be carried+dipper withdrawal+scraper bowl regains; 2. revolution promotes compound: revolution+swing arm promotes or revolution+swing arm lifting+dipper stretches out; 3. unloading compound: dipper stretches out+and scraper bowl opens; 4. it is compound to reset: revolution+swing arm decline+dipper is regained; 5. load compound: revolution+swing arm promotes or revolution+swing arm lifting+dipper stretches out), the P3 pump is only done off-load or overflow work, and P1, the P2 pump of this moment then are operated in the undercurrent state, have influence on the composite performance of excavator.
For this reason, the 3P3V system at three pumps interflow occurred, promptly when swing arm and scraper bowl single movement, pump P1 and P2 can collaborate fuel feeding and give swing arm cylinder or scraper bowl cylinder, are the double pump interflow; During the dipper single movement, pump P1, P2 and P3 can collaborate fuel feeding and give the dipper cylinder, are three pumps interflow; P3 can be separately for revolution when not walking; P1 and P3 supply with running motor respectively during walking, and P2 supplies with swing arm, dipper and scraper bowl, does not influence roadholding.For finishing above-mentioned interflow function, adopt usually and in P3 blowback road, add an interflow valve, to control the interflow and shunting operation process between three pumps.
In the prior art, usually employing handle or foot-operated manual control mode are controlled the unlatching of interflow valve or are closed, thereby the operation experience that only relies on the operator is judged keying opportunity, and the aperture size of valve, promptly and easily cause the inaccurate coordination at three pumps interflow, interflow amount and the flux matched property of actual consumption bad (undercurrent or overflow) estimated require problems such as height to the operator, can't reach the optimum Working after three pumps collaborate.
Summary of the invention
The utility model purpose provides a kind of excavator three pumps interflow control device, makes excavator under various operating mode operations, can keep good power, improves operating efficiency, cuts down the consumption of energy.
For achieving the above object, the technical solution adopted in the utility model is: a kind of excavator three pumps interflow control device, comprise that one is arranged at interflow valve and the hydraulic controller in the hydraulic circuit, described interflow valve is to have the interflow valve that ratio is regulated, and its control end is connected with described hydraulic controller; Also include the pressure sensor that is arranged at respectively in P1 pump, P2 pump, the P3 pump hydraulic circuit, its signal output part is connected with described hydraulic controller corresponding input end respectively, and the test side of described hydraulic controller is connected with pilot pressure sensor on the executive component that P1, P2 pump drive respectively.
In the technique scheme, the executing agency of excavator generally includes: about walking, revolution, swing arm, dipper, scraper bowl etc., drive oily energy by oil pump for above-mentioned hydraulic action element provides.The operating mode of excavator mainly contains following several: 1. entrucking is excavated on the level land, and 2. be lower than shutdown face and excavate entrucking, 3. ditching, 4. 5. ground grading repaiies the slope, 6. lifting; Excavator work is the most frequent is 1.～3. to plant operating mode; these three kinds of operating modes are actual to be exactly the combination of excavating plane, excavator shutdown plane, the different relative altitudes in truck parking plane; add truck stop and tap point angle position with respect to the digger revolving center; formed the multiple combination of angle of revolution and hoisting depth; when excavator when finishing above-mentioned multiple working; need a plurality of oil pumps interflow fuel feeding, to satisfy the job requirements of excavator.The combination that described three pumps are P1, P2, P3 is the oil pump combination that existing most mini-excavators adopt, at different excavation operating modes, valve is in good time with the P3 pump discharge, suitably (by the keying of the described hydraulic controller control valve that is connected with ratio adjusting interflow valve) collaborating with P1, P2 pump by collaborating; By the ratio of interflow valve is regulated, revise the flow of rotation oil, so that the speed of gyration of P3 pump control and the speed coordination of other oil circuit are coordinated thereby reach composite move, adapt to the purpose of each concrete operating mode, improve combined efficiency, cut down the consumption of energy.
Whether it collaborates control mode: when carrying out composite move, controller receives the pressure signal that pressure sensor detects in P1, P2, P3 pump hydraulic circuit in real time, when the operating pressure of P1, P2 pump surpasses the oil pressure relief of P3 pump, controller sends instruction and stops the interflow, when the operating pressure of P1, P2 pump during less than the operating pressure of P3 pump, controller sends instruction, and P3 begins interflow (interflow valve return);
Control mode of its interflow flow is: the test side of described hydraulic controller is connected with pilot pressure sensor on the executive component that P1, P2 pump drive respectively, detect guide's controlled pressure size of the executive component that P1, P2 pump be responsible for according to controller, judge the excavator current working state, and the required hydraulic flow size of executive component, the aperture size of controller control interflow valve, the P3 pump carries out the intelligence interflow.
In the technique scheme, described interflow valve is made up of a hydraulic control transfer valve and an electromagnetic valve, the switch terminal of described hydraulic control transfer valve is connected with hydraulic controller through described electromagnetic valve, drive electromagnetic valve by controller, realize the switching of transfer valve, whether decision P3 pump collaborates, or flow what all collaborate; Another kind of technical scheme is that described interflow valve is an electro-hydraulic proportional valve.
Because technique scheme utilization, the advantage that the utility model compared with prior art has is: have the interflow valve that ratio is regulated because the interflow valve in the utility model adopts, and its control end is connected with hydraulic controller, operating pressure according to the P1 that records, P2, P3 pump, whether the unlatching of controller judgement interflow valve, and in good time make P3 pump and P1, P2 pump collaborate; By the comparison to executive component pilot pressure value size, controller is determined the aperture size of interflow valve in addition, realizes the ratio of flow is regulated, and adapts to the real-time operation operating mode of excavator, effectively improves combined efficiency, cuts down the consumption of energy.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Wherein: 1, interflow valve; 2, scraper bowl valve; 3, swing arm valve; 4, walking valve; 5, walking valve; 6, dipper valve; 7, auxiliary standby valve; 8, swing arm deflection valve; 9, soil-shifting plate valve; 10, revolving valve.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: referring to shown in Figure 1, a kind of excavator three pumps interflow control device, comprise and one be arranged at interflow valve in the hydraulic circuit, be arranged at pressure sensor and hydraulic controller in P1 pump, P2 pump, the P3 pump hydraulic circuit respectively, described interflow 1 valve is made up of a hydraulic control transfer valve and an electromagnetic valve, and the switch terminal of described hydraulic control transfer valve is connected with hydraulic controller through described electromagnetic valve; The signal output part of each described pressure sensor is connected with described hydraulic controller corresponding input end respectively, and the test side of described hydraulic controller is connected with pilot pressure sensor on the executive component that P1, P2 pump drive respectively.
Common excavator multiple working form is: 1. excavate composite move form (swing arm is little to be put forward+dipper withdrawal+scraper bowl regain), revolution promotes composite move form (revolution+swing arm promotes or revolution+swing arm lifting+dipper stretches out), 3. unload composite move form (dipper stretch out+scraper bowl open), the composite move form that resets (withdrawal of revolution+swing arm decline+dipper), entrucking composite move form (revolution+swing arm promotes or revolution+swing arm lifting+dipper stretches out).As shown in Figure 1, the P1 pump has through the executive component that scraper bowl valve 2, swing arm valve 3, walking valve 4 are driven: scraper bowl, swing arm, walking mechanism; The P2 pump has through the executive component that walking valve 5, dipper valve 6, auxiliary standby valve 7 are driven: walking mechanism, dipper, other auxiliary standby mechanism; The P3 pump has through the executive component that swing arm deflection valve 8, soil-shifting plate valve 9, revolving valve 10 are driven: swing arm (making it deflection), ejector dozer, slew gear; During use, hydraulic controller is according to the pilot pressure value that records on each executive component, judge the residing job state of excavator, when being in multiple working, the P1 that records by each sensor again, P2, P3 operational pressure value, judge whether the interflow, concrete mode is: controller receives in real time from P1, P2, the pressure signal that pressure sensor detects in the P3 pump hydraulic circuit, work as P1, when the operating pressure of P2 pump surpasses the oil pressure relief of P3 pump, controller sends instruction and stops the interflow, work as P1, the operating pressure of P2 pump is during less than the operating pressure of P3 pump, and controller sends instruction, and P3 begins interflow (interflow valve return); Simultaneously, according to the size of pilot pressure value, judge the interflow amount that multiple working of living in needs, by the aperture size of controller control electromagnetic valve, hydraulic control transfer valve, an amount of make P3 pump and P1, P2 pump collaborate.
The above-mentioned interflow valve that has the ratio adjusting also can adopt electro-hydraulic proportional valve; or other has the interflow valve that ratio is regulated; though disclosed the confluence passage of a kind of P3 pump and P1, P2 pump in the present embodiment; but be not limited only to this a kind of confluence passage; any those skilled in the art are under the prerequisite that does not break away from spirit and scope of the present utility model; can be used for a variety of modifications and variations, therefore protection domain of the present utility model should be as the criterion with appending claims.
Claims (3)
1. excavator three a pumps interflow control device comprises that one is arranged at interflow valve (1) and the hydraulic controller in the hydraulic circuit, and it is characterized in that: described interflow valve is to have the interflow valve that ratio is regulated, and its control end is connected with described hydraulic controller; Also include the pressure sensor that is arranged at respectively in P1 pump, P2 pump, the P3 pump hydraulic circuit, its signal output part is connected with described hydraulic controller corresponding input end respectively, and the test side of described hydraulic controller is connected with pilot pressure sensor on the executive component that P1, P2 pump drive respectively.
2. excavator three pumps according to claim 1 interflow control device, it is characterized in that: described interflow valve is made up of a hydraulic control transfer valve and an electromagnetic valve, and the switch terminal of described hydraulic control transfer valve is connected with hydraulic controller through described electromagnetic valve.
3. excavator three pumps according to claim 1 interflow control device, it is characterized in that: described interflow valve is an electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201164085U CN201193334Y (en) | 2008-05-08 | 2008-05-08 | Three-pump confluence control device for dredger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201164085U CN201193334Y (en) | 2008-05-08 | 2008-05-08 | Three-pump confluence control device for dredger |
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| CN201193334Y true CN201193334Y (en) | 2009-02-11 |
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| CNU2008201164085U Expired - Fee Related CN201193334Y (en) | 2008-05-08 | 2008-05-08 | Three-pump confluence control device for dredger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268889A (en) * | 2010-06-07 | 2011-12-07 | 广西柳工机械股份有限公司 | Programmable control rotary braking system of hybrid excavator and control method |
| CN102383457A (en) * | 2011-08-30 | 2012-03-21 | 陈海波 | System for dynamically allocating saturation flow of hydraulic excavator |
| CN102575691A (en) * | 2009-09-02 | 2012-07-11 | 日立建机株式会社 | Hydraulic drive device for hydraulic working machine |
| CN105805074A (en) * | 2016-05-31 | 2016-07-27 | 常熟华威履带有限公司 | Three-pump confluence multi-way valve block and hydraulic excavator |
| CN106678099A (en) * | 2017-01-20 | 2017-05-17 | 徐州徐工施维英机械有限公司 | Double-power hydraulic system of concrete construction machinery and concrete construction machinery |
-
2008
- 2008-05-08 CN CNU2008201164085U patent/CN201193334Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575691A (en) * | 2009-09-02 | 2012-07-11 | 日立建机株式会社 | Hydraulic drive device for hydraulic working machine |
| CN102575691B (en) * | 2009-09-02 | 2015-06-10 | 日立建机株式会社 | Hydraulic drive device for hydraulic working machine |
| CN102268889A (en) * | 2010-06-07 | 2011-12-07 | 广西柳工机械股份有限公司 | Programmable control rotary braking system of hybrid excavator and control method |
| CN102383457A (en) * | 2011-08-30 | 2012-03-21 | 陈海波 | System for dynamically allocating saturation flow of hydraulic excavator |
| CN102383457B (en) * | 2011-08-30 | 2013-06-05 | 昆山航天智能技术有限公司 | System for dynamically allocating saturation flow of hydraulic excavator |
| CN105805074A (en) * | 2016-05-31 | 2016-07-27 | 常熟华威履带有限公司 | Three-pump confluence multi-way valve block and hydraulic excavator |
| CN106678099A (en) * | 2017-01-20 | 2017-05-17 | 徐州徐工施维英机械有限公司 | Double-power hydraulic system of concrete construction machinery and concrete construction machinery |
| CN106678099B (en) * | 2017-01-20 | 2018-06-22 | 徐州徐工施维英机械有限公司 | The power hydraulic system of concrete construction machinery and concrete construction machinery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20150508 |
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| EXPY | Termination of patent right or utility model |