CN205024757U - Excavator economizer on and off control device - Google Patents
Excavator economizer on and off control device Download PDFInfo
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- CN205024757U CN205024757U CN201520709459.9U CN201520709459U CN205024757U CN 205024757 U CN205024757 U CN 205024757U CN 201520709459 U CN201520709459 U CN 201520709459U CN 205024757 U CN205024757 U CN 205024757U
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- pressure
- main pump
- crawler excavator
- hydraulic crawler
- excavator
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Abstract
The utility model discloses the economizer on and off control device, hydraulic shovel gets on the bus the equipment action by the control of multiple unit valve work antithetical couplet, hydraulic shovel walking action allies oneself with control by the multiple unit valve walking, get on the bus equipment's maximum load according to hydraulic shovel and confirm a pressure threshold value, and it is two sets of to ally oneself with the share to multiple unit valve work according to this pressure threshold value, acquire in real time the first main pump of hydraulic shovel during operation or (with) second main pump export supply pressure and collaborate the maximum working pressure of high threshold valve antithetical couplet group, acquire hydraulic shovel second main pump inoperative backpressure, acquire hydraulic shovel walking state recognition volume in real time, set pressure according to first main pump or second main pump export fuel feeding operating pressure, second main pump inoperative backpressure, the biggest operating pressure who collaborates high threshold valve antithetical couplet group and excavator economizer carries out real -time reasoning calculation, according to real -time calculation result or the definite control action of economizer to second main pump fuel feeding flow and pressure that whether turn -off of hydraulic shovel walking state recognition volume relatively. Through the utility model provides a different loads of excavator mechanical device down to the contradictions of the economizer demand of opening and close.
Description
Technical field
The utility model relates to excavator field, particularly relates to excavator energy saver opening/shutting controller.
Background technology
Excavator is a kind of conventional engineering machinery, and excavator realizes the action of each mechanical device usually through pressure oil promotion oil cylinder or motor.Because the maximum load that need overcome is different; only overload protection can not be carried out with a security of system pressure to all mechanical device oil circuits during the action of excavator each mechanical device; the mechanical device little to maximum load is everlasting and corresponding oil circuit arranges the secondary safe pressure device less than security of system pressure is carried out overload protection; but the method for this setting secondary safe pressure device brings new problem: when the mechanical device action that maximum load is little, corresponding oil circuit often there will be overflow phenomena; cause Hydraulic System Fever, capacity usage ratio is not high.At present, in order to anti-situation of planting here occurs, some enterprises have developed a kind of new energy saver, carry out Self Adaptive Control to main pump flow, namely under the prerequisite ensureing secondary safe pressure, make main pump output flow automatically adapt to this mechanical part to traffic demand, but do not occur overflow all the time.This energy saver the little mechanical device single movement of maximum load or at composition operation and operating pressure is no more than secondary safe pressure time open, otherwise close, not so the mechanical device work that the load that can have the greatest impact is large, affect composition operation harmony, affect operating efficiency, therefore, the energy saver finding the automatic identifying operation mode of a kind of energy is needed to open and close control method and device.
Utility model content
For above-mentioned background, main purpose of the present utility model is to provide and a kind ofly can ensures the energy-efficient excavator energy saver opening/shutting controller that can meet again normal operating.
A kind of excavator energy saver opening/shutting controller, comprise the first main pump, second main pump, energy saver and banked direction control valves, described banked direction control valves comprises banked direction control valves work connection and banked direction control valves walking connection, to be got on the bus by hydraulic crawler excavator the maximum load determination pressure threshold of equipment, described banked direction control valves work connection is divided into security settings pressure lower than the low threshold valve joint group of described pressure threshold and the security settings pressure high threshold valve joint group higher than described pressure threshold, described high threshold valve joint group collaborates fuel feeding by the first main pump of hydraulic crawler excavator and the second main pump and is set to collaborate high threshold valve joint group, it is characterized in that, also comprise:
First pressure sensor, the first main pump outlet oil circuit described in liquid press bond, for measuring the charge oil pressure signal of described hydraulic crawler excavator first main pump when described hydraulic crawler excavator operates in real time;
Second pressure sensor, second main pump outlet oil circuit described in liquid press bond, described hydraulic crawler excavator second main pump inoperative back pressure during for measuring hydraulic crawler excavator operation in real time when the charge oil pressure signal of described hydraulic crawler excavator second main pump and hydraulic crawler excavator inoperation;
3rd pressure sensor, hydraulic pressure end is connected to the signal output of pressure comparator, measures the maximum working pressure signal that described pressure comparator is chosen in real time;
Pressure comparator, be provided with at least one signal input and at least one signal output, described signal input with often join the one way valve pressurize end of oil-in in the high threshold valve joint group of described interflow or often join non-guarantor's press bond of the hydraulic control one-way valve of working hole with the high threshold valve joint group in interflow or is connected with the HPCO2 of described banked direction control valves, pressure comparator is compared in real time to choose when hydraulic crawler excavator operates and collaborates the maximum working pressure of high threshold valve joint group and exported by signal output;
Pressure signalling generator, hydraulic pressure end is connected on the signal port PT of described banked direction control valves walking connection, sends described hydraulic crawler excavator walking states identified amount signal in real time;
Controller, the signal input part of described controller connects the electric end of described first pressure sensor, described second pressure sensor, described 3rd pressure sensor, described pressure signalling generator, the electric control element of the signal output part electrical connection energy saver of described controller, described controller obtains the real-time working pressure P w of the first main pump fuel feeding that the first pressure sensor sends
pump1, the real-time working pressure P w of the second main pump fuel feeding that sends of the second pressure sensor
pump2, the pressure comparator that sends of the 3rd pressure sensor compares the highest real-time working pressure P of the interflow chosen high threshold valve joint group
hTVwith the hydraulic crawler excavator walking states identified amount signal Log that pressure signalling generator sends
walk.
Described controller judges acquired value, works as P
hTV≤ P
tV, Pw
pump1≤ P
tV, P
tV≤ P
sV-D, Pw
pump2≤ Pt
pump2; Or work as Log
walk=ON, then the input control amount FD of energy saver
save-Energy=OFF, turns off the control action of described energy saver to described hydraulic crawler excavator second main pump fuel supply flow rate and pressure by controller, otherwise FD
save-Energy=ON, controller starting energy-saving device.
The beneficial effect that the utility model brings: the utility model passes through the pressure threshold P of the maximum load of equipment of getting on the bus
tVfor median, described banked direction control valves work connection is divided into security settings pressure lower than the low threshold valve joint group of described pressure threshold and security settings pressure higher than the high threshold valve joint group of described pressure threshold, is obtained the real-time working pressure P w of hydraulic crawler excavator first main pump fuel feeding by controller
pump1, hydraulic crawler excavator second main pump fuel feeding real-time working pressure P w
pump2, collaborate the highest real-time working pressure P of high threshold valve joint group
hTVand hydraulic crawler excavator walking states identified amount signal Log
walkvalue, and then these values are compared, thus show whether energy saver opens and closes, the utility model is adopted both farthest to ensure that the performance of excavator energy saver energy-saving effect, again the original mode of operation of excavator and performance are had no effect, solve energy saver and apply a difficult problem.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is another kind of structural representation of the present utility model.
1, the first pressure sensor 2, pressure signalling generator 3, second pressure sensor
4, pressure comparator 5, the 3rd pressure sensor 6, controller
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
First pressure sensor 1, the first main pump outlet oil circuit described in liquid press bond, for sending the real-time working pressure P w of hydraulic crawler excavator first main pump fuel feeding
pump1signal;
Second pressure sensor 3, the second main pump outlet oil circuit described in liquid press bond, for sending the real-time working pressure P w of hydraulic crawler excavator first main pump fuel feeding
pump2signal;
Pressure comparator 4, the series connection and (or) shuttle valve in parallel that can choose the number of matches of collaborating high threshold valve joint group pressure signal is provided with in it, one or more signal input and one or more signal output is provided with outside it, a part for signal input connects the in line check valve pressurize end often joined in the high threshold valve joint group of described interflow or the non-pressurize end of hydraulic control one-way valve (if being provided with hydraulic control one-way valve) often joining working hole, another part can connect the HPCO2 (as needed the second main pump by the HPCO2 of banked direction control valves to other combined stream fuel feeding of many valves valve) of multi-way valve of hydraulic excavator, compare in real time when choosing hydraulic crawler excavator operation and collaborate the maximum working pressure of high threshold valve joint group and exported by signal output,
3rd pressure sensor 5, compares the highest real-time working pressure P of the interflow chosen high threshold valve joint group for sending pressure comparator
hTVsignal;
Pressure signalling generator 2, hydraulic pressure end is connected on excavator banked direction control valves signal port PT, different banked direction control valves has the different walking pilot signal way of outputs, in banked direction control valves as shown in Figure 1, the guide's fuel injection pressure signal exported when directly choosing walk lever operated by shuttle valve, as shown in Figure 2, the mode of being built pressure by walking connection spool commutation displacement responds to walking operated pilot fuel injection pressure signal, the size of guide's fuel injection pressure signal correspond to the actual walking pressure that can reach, walking operated pilot pressure when thus reaching as high as the setting pressure of excavator energy saver with running gear principal pressure is critical walking pilot pressure, pressure signalling generator can provide different walking states identified amount signal Log according to critical walking pilot pressure
walk,
Controller 6, for obtaining the real-time working pressure P w of the hydraulic crawler excavator first main pump fuel feeding that the first pressure sensor 1 sends
pump1, the real-time working pressure P w of hydraulic crawler excavator second main pump fuel feeding that sends of the second pressure sensor 3
pump2, the pressure comparator that sends of the 3rd pressure sensor compares the highest real-time working pressure P of the interflow chosen high threshold valve joint group
hTVand the hydraulic crawler excavator walking states identified amount signal Log that pressure signalling generator provides
walk, and control according to following method:
Below the opening-closing process of hydraulic excavator saving energy device is set forth:
Before excavator normally starts, this excavator energy saver keying control method and constant are as pressure threshold P
tV, excavator energy saver setting pressure P
sV-D, the second main pump inoperative back pressure Pt
pump2, excavator walking states identified amount Log
walkfollow procedure language enrolls controller all, therefore when excavator normally works, controller constantly obtains the real-time pressure data and the walking states identified amount that provides of pressure signalling generator that external pressure sensor sends, and turns off the control action of energy saver to hydraulic crawler excavator second main pump fuel supply flow rate and pressure when meeting following condition:
When the outside real-time pressure data obtained satisfies condition formula P
hTV≤ P
tV, Pw
pump1≤ P
tV, P
tV≤ P
sV-D, Pw
pump2≤ Pt
pump2time, then maximum working pressure P in the high threshold valve joint group in interflow is described
hTVbe not previous operation leave over pressure, but this time operation first main pump drives the actual pressure of load foundation, according to banked direction control valves control principle, in the high threshold valve joint group in interflow, there is the valve needing high-pressure high-flow to join, need Dual-pump flow-converging fuel feeding jointly to drive load, at this moment the fuel delivery of the second main pump and pressure should not control by energy saver, and therefore controller should make the input control amount FD of energy saver
save-Energy=OFF, namely turns off the control action of energy saver to hydraulic crawler excavator second main pump fuel supply flow rate and pressure;
As the excavator walking states identified amount Log obtained
walkduring=ON, then illustrate that excavator is likely needing the walking of big-flow high-pressure power to operate, at this moment the fuel delivery of the second main pump and pressure should not control by energy saver equally, and therefore controller should make the input control amount FD of energy saver
save-Energy=OFF, namely turns off the control action of energy saver to hydraulic crawler excavator second main pump fuel supply flow rate and pressure.As for different why with equipment of the control method of walking opening/closing energy-saving device, composition operation mode containing walking when main cause is excavator construction operation is few, the actual pressure of walking does not reach energy saver and turns off pressure and turn off energy saver in advance on energy-saving effect impact not quite, and the control method implementation cost of this opening/closing energy-saving device of walking is low.
The foregoing is only preferred embodiment of the present utility model, and limit the utility model never in any form, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. an excavator energy saver opening/shutting controller, comprise the first main pump, the second main pump, energy saver and banked direction control valves, described banked direction control valves comprises banked direction control valves work connection and banked direction control valves walking connection, the maximum load determination pressure threshold P of equipment of being got on the bus by hydraulic crawler excavator
tVdescribed banked direction control valves work connection is divided into security settings pressure lower than the low threshold valve joint group of described pressure threshold and the security settings pressure high threshold valve joint group higher than described pressure threshold, described high threshold valve joint group collaborates fuel feeding by the first main pump of hydraulic crawler excavator and the second main pump and is set to collaborate high threshold valve joint group, it is characterized in that, also comprise:
First pressure sensor, the first main pump outlet oil circuit described in liquid press bond, for measuring the charge oil pressure signal of described hydraulic crawler excavator first main pump when described hydraulic crawler excavator operates in real time;
Second pressure sensor, second main pump outlet oil circuit described in liquid press bond, described hydraulic crawler excavator second main pump inoperative back pressure during for measuring hydraulic crawler excavator operation in real time when the charge oil pressure signal of described hydraulic crawler excavator second main pump and hydraulic crawler excavator inoperation;
3rd pressure sensor, hydraulic pressure end is connected to the signal output of pressure comparator, measures the maximum working pressure signal that described pressure comparator is chosen in real time;
Pressure comparator, be provided with at least one signal input and at least one signal output, described signal input with often join the one way valve pressurize end of oil-in in the high threshold valve joint group of described interflow or often join non-guarantor's press bond of the hydraulic control one-way valve of working hole with the high threshold valve joint group in interflow or is connected with the HPCO2 of described banked direction control valves, pressure comparator is compared in real time to choose when hydraulic crawler excavator operates and collaborates the maximum working pressure of high threshold valve joint group and exported by signal output;
Pressure signalling generator, the hydraulic pressure end of pressure signalling generator is connected on the signal port PT of described banked direction control valves walking connection, sends described hydraulic crawler excavator walking states identified amount signal in real time;
Controller, the signal input part of described controller connects the electric end of described first pressure sensor, described second pressure sensor, described 3rd pressure sensor, described pressure signalling generator, the signal output part of described controller connects the electric control element of energy saver, and described controller obtains the real-time working pressure P w of the first main pump fuel feeding that the first pressure sensor sends
pump1, the real-time working pressure P w of the second main pump fuel feeding that sends of the second pressure sensor
pump2, the pressure comparator that sends of the 3rd pressure sensor compares the highest real-time working pressure P of the interflow chosen high threshold valve joint group
hTVwith the hydraulic crawler excavator walking states identified amount signal Log that pressure signalling generator sends
walk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709459.9U CN205024757U (en) | 2015-09-14 | 2015-09-14 | Excavator economizer on and off control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709459.9U CN205024757U (en) | 2015-09-14 | 2015-09-14 | Excavator economizer on and off control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205024757U true CN205024757U (en) | 2016-02-10 |
Family
ID=55257302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520709459.9U Active CN205024757U (en) | 2015-09-14 | 2015-09-14 | Excavator economizer on and off control device |
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| Country | Link |
|---|---|
| CN (1) | CN205024757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133687A (en) * | 2015-09-14 | 2015-12-09 | 山河智能装备股份有限公司 | Start and stop control method and device for energy conservation device of excavator |
| WO2022057550A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏徐工工程机械研究院有限公司 | Positive-flow get-on and get-off composite stability control system and method |
-
2015
- 2015-09-14 CN CN201520709459.9U patent/CN205024757U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133687A (en) * | 2015-09-14 | 2015-12-09 | 山河智能装备股份有限公司 | Start and stop control method and device for energy conservation device of excavator |
| CN105133687B (en) * | 2015-09-14 | 2017-09-15 | 山河智能装备股份有限公司 | Excavator energy saver opens and closes control method and device |
| WO2022057550A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏徐工工程机械研究院有限公司 | Positive-flow get-on and get-off composite stability control system and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |