CN115613649B - Gear power modification system and method for excavator - Google Patents
Gear power modification system and method for excavator Download PDFInfo
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- CN115613649B CN115613649B CN202211038238.4A CN202211038238A CN115613649B CN 115613649 B CN115613649 B CN 115613649B CN 202211038238 A CN202211038238 A CN 202211038238A CN 115613649 B CN115613649 B CN 115613649B
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- 238000004364 calculation method Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000002715 modification method Methods 0.000 claims description 7
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Classifications
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a gear power modification system and method of an excavator, wherein the system comprises a parameter input unit and a main controller which are connected; under the current gear, reading the current power percentage parameter from a storage area of the main controller; if the power percentage parameter is required to be modified, the parameter input unit inputs an expected power percentage parameter corresponding to the current power percentage parameter into the main controller, the main controller replaces the current power percentage parameter by the received expected power percentage parameter, and feeds back a modification state to the parameter input unit, wherein the expected power percentage parameter is used for performing power matching operation; and if the power percentage parameter is not required to be modified, the main controller uses the read current power percentage parameter for performing power matching operation. The invention can realize the modification and storage of the gear power percentage under each gear and can improve the adaptability of the excavator to the power demands under different working conditions.
Description
Technical Field
The invention belongs to the technical field of excavator control, and particularly relates to an excavator gear power modification system and method.
Background
The gear power percentage is that the gear power coefficient (0% -100%), the maximum gear power (i.e. basic power) is set in a general program, the gear power=basic power is the power percentage, and the purpose of modifying the power can be achieved by modifying the power percentage. Gear power percent = gear power/base power.
The excavator works under different light load or heavy load working conditions or according to the requirement of the working progress condition, the power required by the excavator can change, and if the power is in a fixed gear power, the energy waste or the power shortage can be caused. In the prior art, in order to enable the excavator to obtain different powers, the power is generally adjusted by changing the gear directly, and practice proves that the problem of imprecise adjustment exists only by changing the gear, and the current working condition requirement cannot be met.
Disclosure of Invention
Aiming at the problems, the invention provides a gear power modification system and a gear power modification method for an excavator, which can modify and store the gear power percentage under each gear, can improve the adaptability of the excavator to power requirements under different working conditions, and are simple and visual to operate.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides an excavator gear power modification system, comprising a parameter input unit and a main controller connected;
Under the current gear, reading the current power percentage parameter from a storage area of the main controller;
If the power percentage parameter is required to be modified, the parameter input unit inputs an expected power percentage parameter corresponding to the current power percentage parameter into the main controller, the main controller replaces the current power percentage parameter by the received expected power percentage parameter, and feeds back a modification state to the parameter input unit, wherein the expected power percentage parameter is used for performing power matching operation;
And if the power percentage parameter is not required to be modified, the main controller uses the read current power percentage parameter for performing power matching operation.
Optionally, the parameter input unit is an instrument; the parameter input unit is connected with the main controller through CAN bus communication.
Optionally, the excavator gear power modification system further comprises:
the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller;
The engine is used for providing power for the main pump and sending the rotating speed information of the main pump to the main controller;
And the main pump electromagnetic valve is used for receiving the control signal output by the main controller and controlling the displacement of the main pump.
Optionally, if the main controller enters a power autonomous guiding and adjusting mode, the main controller collects related data of the pressure sensor, the engine and the main pump electromagnetic valve, and calculates the hydraulic system load instantaneous power P t of the excavator;
Respectively counting the instantaneous power P t in n preset time periods T 1、T2……Tn to obtain n maximum powers P T1max、PT2max……PTnmax, counting the average maximum power P max, and comparing with the currently set gear power P D;
If the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
If the average maximum power P max is between B and A times the currently set gear power P D, no power adjustment is indicated.
Optionally, a calculation formula of the hydraulic system load instantaneous power P t of the excavator is:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
Optionally, the calculation formula of the average maximum power P max is:
Pmax＝(PT1max+PT2max……+PTnmax)/n。
Optionally, the calculation formula of the currently set gear power P D is:
PD＝PB*C
wherein P B is the base power, and C is the power percentage.
Optionally, when the meter turns off the power autonomous guidance adjustment mode function of the main controller, the main controller performs power matching calculation according to the current power percentage parameter, and the driver does not receive the prompt adjustment power signal.
In a second aspect, the present invention provides a method for modifying gear power of an excavator, including:
Under the current gear, reading the current power percentage parameter from a storage area of the master controller;
If the power percentage parameter is required to be modified, a parameter input unit is utilized to input a desired power percentage parameter corresponding to the current power percentage parameter into a main controller, the main controller replaces the current power percentage parameter with the received desired power percentage parameter, and a modification state is fed back to the parameter input unit, wherein the desired power percentage parameter is used for performing power matching operation;
And if the power percentage parameter is not required to be modified, using the main controller to use the read current power percentage parameter for power matching operation.
Optionally, the excavator gear power modification method further includes:
If the main controller is judged to enter the power autonomous guiding and adjusting mode, the main controller is utilized to collect related data of a pressure sensor, an engine and a main pump electromagnetic valve, and the hydraulic system load instantaneous power P t of the excavator is calculated; the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller; the engine is used for providing power for the main pump and sending the rotating speed information to the main controller; the main pump electromagnetic valve is used for receiving a control signal output by the main controller and controlling the displacement of the main pump;
respectively counting the instantaneous power P t in n preset time periods T 1、T2……Tn to obtain n maximum powers P T1max、PT2max……PTnmax, and counting the average maximum power P max and the currently set gear power P D;
If the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
if the average maximum power P max is between B and A times the currently set gear power P D, no adjustment of the power percentage is indicated.
Optionally, a calculation formula of the hydraulic system load instantaneous power P t of the excavator is:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
Compared with the prior art, the invention has the beneficial effects that:
According to the gear power modification system and method for the excavator, the gear power percentage can be modified and stored under each gear, the current working condition requirements can be met, the adaptability of the excavator to the power requirements under different working conditions is improved, and the operation is simple, convenient and visual.
Furthermore, the invention also provides that the power percentage parameter can be automatically guided according to the working condition in the automatic guiding and adjusting mode, so that the working condition adaptability of the product is improved, and the operation is simple and convenient.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:
FIG. 1 is a schematic diagram of a control system according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating the modification of the power percentage parameter according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a power autonomous pilot adjustment flow according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present patent, it should be noted that, the terms "upper", "lower", "left", "right", "horizontal", etc. indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of describing the present patent and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present patent.
In the description of the present patent, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The principle of application of the invention is described in detail below with reference to the accompanying drawings.
Example 1
The embodiment of the invention provides a gear power modification system of an excavator, which is shown in figure 1 and comprises a parameter input unit and a main controller which are connected;
The parameter input unit is used for realizing man-machine interaction and power percentage parameter input; the main controller is used for carrying out data storage, logic operation and control data output, and transmitting the modified state information to the parameter input unit for display;
Specifically, under the current gear, reading the current power percentage parameter from a storage area of the main controller;
If the power percentage parameter is required to be modified, the parameter input unit inputs an expected power percentage parameter corresponding to the current power percentage parameter into the main controller, the main controller replaces the current power percentage parameter by the received expected power percentage parameter, and feeds back a modification state to the parameter input unit, wherein the expected power percentage parameter is used for performing power matching operation;
And if the power percentage parameter is not required to be modified, the main controller uses the read current power percentage parameter for performing power matching operation.
Based on the analysis, the gear power modification system of the excavator in the embodiment of the invention can modify and store the gear power percentage under each gear, can meet the current working condition requirement, and improves the adaptability of the excavator to the power requirements under different working conditions, and is simple and visual to operate.
In a specific implementation manner of the embodiment of the present invention, the parameter input unit is an instrument; the parameter input unit is connected with the main controller through CAN bus communication, communication connection is established, reliable communication and flexible layout are completed by utilizing the CAN bus, and therefore expected power percentage parameters of gears to be modified are input to the main controller.
In a specific implementation of the embodiment of the present invention, as shown in fig. 1, the excavator gear power modification system further includes: a pressure sensor, an engine and a main pump electromagnetic valve;
the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller;
The engine is used for providing power for the main pump and sending the rotating speed information to the main controller;
the main pump electromagnetic valve is used for receiving a control signal output by the main controller and controlling the displacement of the main pump.
If the main controller enters a power autonomous guiding and adjusting mode, the main controller collects related data of the pressure sensor, the engine and the main pump electromagnetic valve and calculates the hydraulic system load instantaneous power P t of the excavator;
respectively counting the instantaneous power P t in n preset time periods T 1、T2……Tn to obtain n maximum powers P T1max、PT2max……PTnmax, and counting the average maximum power P max and the currently set gear power P D;
If the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
If the average maximum power P max is between B and A times the currently set gear power P D, no power adjustment is indicated.
In a specific implementation process, a calculation formula of the hydraulic system load instantaneous power P t of the excavator is as follows:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
The calculation formula of the average maximum power P max is as follows:
Pmax＝(PT1max+PT2max……+PTnmax)/n
the calculation formula of the currently set gear power P D is as follows:
PD＝PB*C
wherein P B is the base power, and C is the power percentage.
The instrument in the embodiment of the invention can realize the function of closing or opening the power autonomous guiding and adjusting mode of the main controller, and when the instrument closes the function of closing the power autonomous guiding and adjusting mode of the main controller, the main controller performs power matching calculation according to the current power percentage parameter, and a driver does not receive a prompt power adjusting signal.
Based on the analysis, the gear power modification system of the excavator in the embodiment of the invention can automatically guide the power percentage parameter adjustment according to the working condition in the automatic guide adjustment mode, thereby improving the working condition adaptability of the product and being simple and convenient to operate.
The following describes the working procedure of the excavator gear power modification system in the embodiment of the present invention in detail with reference to a specific implementation manner.
As shown in fig. 2, after the power modification system of the gear of the excavator in the embodiment of the present invention is powered on, the current power percentage parameter is read from the storage area of the main controller, and if the power percentage parameter is not modified, the read current power percentage parameter is used for power matching operation; if the power percentage parameter is modified, the power percentage to be modified (i.e. the current power percentage parameter) in the current gear is firstly selected by the meter, the desired power percentage (i.e. the desired value of the power percentage) is input, the meter transmits the data to the main controller for processing, the main controller stores the data in the storage area, then feeds back the modification state to the meter, the power percentage is modified, the control program in the main controller reads the modified gear power percentage (i.e. the desired power percentage) in the next operation period, and the modification flow of the gear power percentage is shown in fig. 2.
In the power autonomous guiding and adjusting mode, a main controller collects information such as a pressure signal P of a hydraulic system, a current i of a main pump electromagnetic valve, an engine rotating speed r and the like output by a pressure sensor, and a relation v (i) between the electromagnetic valve current i and a main pump displacement v is calibrated according to a main pump and electromagnetic valve characteristic curve, so that system load instantaneous power P t,Pt =p r v (i) is calculated. The instantaneous power P t in n preset time periods T 1、T2……Tn is counted respectively to obtain the maximum power P T1max、PT2max……PTnmax in n preset time periods T 1、T2……Tn, the average maximum power P max,Pmax＝(PT1max+PT2max……+PTnmax)/n is counted, the average maximum power P max,Pmax＝(PT1max+PT2max……+PTnmax)/n is compared with the currently set gear power P D,PD＝PB*C,PB as basic power, C is the power percentage, and P B and C are stored in a storage area of the main controller. If the average maximum power P max is greater than A times (such as 90%) of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument; if the average maximum power P max is smaller than B times (such as 50%) of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument; if the average maximum power P max is between B times (e.g., 50%) and A times (e.g., 90%) the currently set gear power P D, then no power adjustment is indicated. The control logic flow is shown in fig. 3.
The power autonomous guiding and adjusting mode can be closed through the instrument, when the power autonomous guiding and adjusting mode is closed, the control system performs system power matching calculation according to the power percentage parameter, and a driver does not receive a prompt power adjusting signal.
Example 2
The embodiment of the invention provides a gear power modification method for an excavator, which specifically comprises the following steps:
step (1) under the current gear, reading the current power percentage parameter from a storage area of a main controller;
If the power percentage parameter is required to be modified, inputting an expected power percentage parameter corresponding to the current power percentage parameter into a main controller by using a parameter input unit, replacing the current power percentage parameter by the main controller by using the received expected power percentage parameter, and feeding back a modification state to the parameter input unit, wherein the expected power percentage parameter is used for performing power matching operation;
And (3) if the power percentage parameter is not required to be modified, using the main controller to use the read current power percentage parameter for power matching operation.
Based on the analysis, the gear power modification method of the excavator in the embodiment of the invention can modify and store the gear power percentage under each gear, can meet the current working condition requirement, and improves the adaptability of the excavator to the power requirements under different working conditions, and is simple and visual to operate.
In a specific implementation manner of the embodiment of the present invention, the method for modifying the gear power of the excavator further includes the following steps:
If the main controller is judged to enter the power autonomous guiding and adjusting mode, the main controller is utilized to collect related data of a pressure sensor, an engine and a main pump electromagnetic valve, and the hydraulic system load instantaneous power P t of the excavator is calculated; the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller; the engine is used for providing power for the main pump and sending the rotating speed information to the main controller; the main pump electromagnetic valve is used for receiving a control signal output by the main controller and controlling the displacement of the main pump;
respectively counting the instantaneous power P t in n preset time periods T 1、T2……Tn to obtain n maximum powers P T1max、PT2max……PTnmax, and counting the average maximum power P max and the currently set gear power P D;
If the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
If the average maximum power P max is between B and A times the currently set gear power P D, no power adjustment is indicated.
In a specific implementation process, a calculation formula of the hydraulic system load instantaneous power P t of the excavator is as follows:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
The calculation formula of the average maximum power P max is as follows:
Pmax＝(PT1max+PT2max……+PTnmax)/n
the calculation formula of the currently set gear power P D is as follows:
PD＝PB*C
wherein P B is the base power, and C is the power percentage.
Based on the analysis, the method for modifying the gear power of the excavator in the embodiment of the invention can automatically guide the power percentage parameter adjustment according to the working condition in the automatic guide adjustment mode, thereby improving the working condition adaptability of the product and being simple and convenient to operate.
The following describes the method for modifying the power of the gear of the excavator in the embodiment of the present invention in detail with reference to a specific embodiment.
As shown in fig. 2, after the power modification system of the gear of the excavator in the embodiment of the present invention is powered on, the current power percentage parameter is read from the storage area of the main controller, and if the power percentage parameter is not modified, the read current power percentage parameter is used for power matching operation; if the power percentage parameter is modified, the power percentage to be modified (i.e. the current power percentage parameter) in the current gear is selected by the meter, the desired power percentage is input, the meter transmits the data to the main controller for processing, the main controller stores the data in the storage area, then feeds back the modification state to the meter, the power percentage is modified, the control program in the main controller reads the modified gear power percentage (i.e. the desired power percentage) in the next operation period, and the modification flow of the gear power percentage is shown in fig. 2.
In the power autonomous guiding and adjusting mode, the main controller collects information such as a pressure signal P output by the pressure sensor, a current i of the main pump electromagnetic valve, an engine rotating speed r and the like, and marks a relation v (i) between the electromagnetic valve current i and the main pump displacement v according to the characteristic curves of the main pump and the electromagnetic valve, and calculates the instantaneous power P t,Pt =p r v (i) of the system load. The instantaneous power P t in n preset time periods T 1、T2……Tn is counted respectively to obtain the maximum power P T1max、PT2max……PTnmax in n preset time periods T 1、T2……Tn, the average maximum power P max,Pmax＝(PT1max+PT2max……+PTnmax)/n is counted, the average maximum power P max,Pmax＝(PT1max+PT2max……+PTnmax)/n is compared with the currently set gear power P D,PD＝PB*C,PB as basic power, C is the power percentage, and P B and C are stored in a storage area of the main controller. If the average maximum power P max is greater than A times (such as 90%) of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument; if the average maximum power P max is smaller than B times (such as 50%) of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument; if the average maximum power P max is between B times (e.g., 50%) and A times (e.g., 90%) the currently set gear power P D, then no power adjustment is indicated. The control logic flow is shown in fig. 3.
The power autonomous guiding and adjusting mode can be closed through the instrument, when the power autonomous guiding and adjusting mode is closed, the control system performs system power matching calculation according to the power percentage parameter, and a driver does not receive a prompt power adjusting signal.
The excavator gear power modification method in the embodiment of the present invention may be implemented based on the excavator gear power modification system in embodiment 1.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An excavator gear power modification system, characterized in that: comprises a parameter input unit and a main controller which are connected;
Under the current gear, reading the current power percentage parameter from a storage area of the main controller;
If the power percentage parameter is required to be modified, the parameter input unit inputs an expected power percentage parameter corresponding to the current power percentage parameter into the main controller, the main controller replaces the current power percentage parameter by the received expected power percentage parameter, and feeds back a modification state to the parameter input unit, wherein the expected power percentage parameter is used for performing power matching operation;
If the power percentage parameter is not required to be modified, the main controller uses the read current power percentage parameter for power matching operation;
the excavator gear power modification system further comprises:
the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller;
The engine is used for providing power for the main pump and sending the rotating speed information of the main pump to the main controller;
The main pump electromagnetic valve is used for receiving the control signal output by the main controller and controlling the displacement of the main pump;
If the main controller enters a power autonomous guiding and adjusting mode, the main controller collects related data of the pressure sensor, the engine and the main pump electromagnetic valve and calculates the hydraulic system load instantaneous power P t of the excavator;
Respectively counting the instantaneous power P t in n preset time periods T 1、T2......Tn to obtain n maximum powers P T1max、PT2max......PTn max, counting the average maximum power P max, and comparing with the currently set gear power P D; if the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
If the average maximum power P max is between B and A times the currently set gear power P D, no power adjustment is indicated.
2. The excavator gear power modification system of claim 1 wherein: the parameter input unit is an instrument; the parameter input unit is connected with the main controller through CAN bus communication.
3. The excavator gear power modification system of claim 1 wherein: the calculation formula of the hydraulic system load instantaneous power P t of the excavator is as follows:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
4. The excavator gear power modification system of claim 1 wherein: the calculation formula of the average maximum power P max is as follows:
Pmax＝(PT1max+PT2max......+PTnmax)/n。
5. The excavator gear power modification system of claim 1 wherein: the calculation formula of the currently set gear power P D is as follows:
PD＝PB*C
wherein P B is the base power, and C is the power percentage.
6. The excavator gear power modification system of claim 1 wherein: when the meter turns off the power autonomous guiding and adjusting mode function of the main controller, the main controller performs power matching calculation according to the current power percentage parameter, and a driver does not receive a prompt power adjusting signal.
7. An excavator gear power modification method, comprising the steps of:
Under the current gear, reading the current power percentage parameter from a storage area of the master controller;
If the power percentage parameter is required to be modified, a parameter input unit is utilized to input a desired power percentage parameter corresponding to the current power percentage parameter into a main controller, the main controller replaces the current power percentage parameter with the received desired power percentage parameter, and a modification state is fed back to the parameter input unit, wherein the desired power percentage parameter is used for performing power matching operation;
if the power percentage parameter is not required to be modified, using the main controller to use the read current power percentage parameter for power matching operation;
the excavator gear power modification method further comprises the following steps:
If the main controller is judged to enter the power autonomous guiding and adjusting mode, the main controller is utilized to collect related data of a pressure sensor, an engine and a main pump electromagnetic valve, and the hydraulic system load instantaneous power P t of the excavator is calculated; the pressure sensor is used for detecting the working pressure of a hydraulic system of the excavator in real time and sending the working pressure to the main controller; the engine is used for providing power for the main pump and sending the rotating speed information to the main controller; the main pump electromagnetic valve is used for receiving a control signal output by the main controller and controlling the displacement of the main pump;
Respectively counting the instantaneous power P t in n preset time periods T 1、T2......Tn to obtain n maximum powers P T1max、PT2max......PTn max, and counting the average maximum power P max and the currently set gear power P D;
If the average maximum power P max is larger than A times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of increasing the power percentage on the instrument;
If the average maximum power P max is smaller than the B times of the currently set gear power P D, sending a power regulation prompt, and reminding a driver of reducing the power percentage on the instrument, wherein B is smaller than A;
if the average maximum power P max is between B and A times the currently set gear power P D, no adjustment of the power percentage is indicated.
8. The method for modifying the power of an excavator gear according to claim 7, wherein the calculation formula of the hydraulic system load instantaneous power P t of the excavator is:
Pt＝p*r*v(i)
Wherein p is the working pressure of a hydraulic system of the excavator, and r is the rotating speed of an engine; v (i) is the relation between the electromagnetic valve current i and the main pump displacement v, and is obtained through the calibration of the characteristic curves of the main pump and the electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211038238.4A CN115613649B (en) | 2022-08-29 | 2022-08-29 | Gear power modification system and method for excavator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365445A (en) * | 1990-08-08 | 1994-11-15 | Nissan Motor Company, Ltd. | Engine power trouble detecting method and apparatus by checking actual engine power condition |
| JPH07228173A (en) * | 1994-02-18 | 1995-08-29 | Komatsu Ltd | Control device for static hydraulic mechanical transmission |
| CN102021926A (en) * | 2010-11-23 | 2011-04-20 | 三一重机有限公司 | Intelligent control method for improving efficiency of excavator |
| CN107939535A (en) * | 2017-10-27 | 2018-04-20 | 徐工集团工程机械有限公司 | Rotary drilling rig engine power control system and method |
| CN114277879A (en) * | 2022-01-18 | 2022-04-05 | 柳州柳工挖掘机有限公司 | Excavator and engine available power self-calibration method and system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365445A (en) * | 1990-08-08 | 1994-11-15 | Nissan Motor Company, Ltd. | Engine power trouble detecting method and apparatus by checking actual engine power condition |
| JPH07228173A (en) * | 1994-02-18 | 1995-08-29 | Komatsu Ltd | Control device for static hydraulic mechanical transmission |
| CN102021926A (en) * | 2010-11-23 | 2011-04-20 | 三一重机有限公司 | Intelligent control method for improving efficiency of excavator |
| CN107939535A (en) * | 2017-10-27 | 2018-04-20 | 徐工集团工程机械有限公司 | Rotary drilling rig engine power control system and method |
| CN114277879A (en) * | 2022-01-18 | 2022-04-05 | 柳州柳工挖掘机有限公司 | Excavator and engine available power self-calibration method and system |
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