CN117819439B - Flameout prevention control method and flameout prevention control device for reloading forklift - Google Patents
Flameout prevention control method and flameout prevention control device for reloading forklift Download PDFInfo
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- 230000002265 prevention Effects 0.000 title claims abstract description 24
- 230000001276 controlling effect Effects 0.000 description 17
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- 230000004044 response Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 4
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- 238000005265 energy consumption Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
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Abstract
The application discloses a flameout prevention control method and device for a reloading forklift, and relates to the technical field of control, wherein the flameout prevention control method for the reloading forklift comprises the following steps: acquiring the angle of a control handle, the rotating speed of an engine, the load pressure value of the engine and the initial value of proportional valve current; determining a target rotating speed of the engine and a target current value of the proportional valve according to the angle of the control handle; determining a proportional valve current increment according to the load pressure value; controlling the rotation speed of an engine to rise to a target rotation speed of the engine; and controlling the initial value of the proportional valve current to be increased to the target current value of the proportional valve according to the increment of the proportional valve current. Therefore, when the forklift is controlled, the proportional valve current increment can be determined according to the load pressure value of the engine, and the proportional valve current initial value is controlled to be increased to the proportional valve target current value according to the proportional valve current increment, so that the variation coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved.
Description
Technical Field
The application relates to the technical field of control, in particular to a flameout prevention control method and device for a reloading forklift.
Background
Along with the continuous promotion of industrial process and the rapid development of logistics industry, heavy equipment factories and ports and docks need a large amount of heavy material transfer vehicles, and heavy fork trucks can flexibly carry heavy goods in a very small space relative to traditional gantry cranes, so that the carrying efficiency is greatly improved, and all manufacturers are actively developing the heavy fork trucks due to huge market potential.
For the engineering machinery with stable forklift loads, when the working device is not in operation, the main control valve of the hydraulic system is usually closed, the engine runs at idle speed, and when the working device starts to work, for example, when goods are lifted, the operation is usually performed by adopting a mode of both hands and feet, namely, the accelerator pedal is stepped on while the proportional valve handle is operated, and the disadvantage of the operation mode is that the operation mode needs both hands and feet of a driver, so that the labor intensity is increased. In addition, in the lifting process, coordination between the opening of the proportional valve and the rotation speed of the engine is difficult to ensure: in order to ensure enough power to drive the lifting oil cylinder, an engine accelerator pedal is generally stepped on, and a lifting proportional valve handle is operated after the rotation speed of the engine rises, so that the operation efficiency is reduced, and the energy consumption is increased; and if the proportional valve is operated faster than the engine throttle, it is easy to cause the engine to stall or even stall.
At present, the control handle is generally related to the engine speed and the current value of the proportional valve, so that a driver can control the engine speed and the current value of the proportional valve simultaneously by operating the control handle, and the problems of high operation intensity and fuel waste of the driver are solved. However, as the response rates of the engine speed and the proportional valve current value are not the same, the method still cannot accurately control the coordination of the opening degree of the proportional valve and the engine speed, so that the control stability of the forklift is low.
Disclosure of Invention
The embodiment of the application provides a flameout prevention control method and device for a reloaded forklift, which can improve the control stability of the forklift.
In view of this, the embodiment of the application provides a method for controlling flameout of a reloading forklift, which comprises the following steps:
Acquiring the angle of a control handle, the rotating speed of an engine, the load pressure value of the engine and the initial value of proportional valve current;
Determining a target rotating speed of an engine and a target current value of a proportional valve according to the angle of the control handle;
determining a proportional valve current increment according to the load pressure value;
Controlling the rotation speed of the engine to rise to a target rotation speed of the engine;
and controlling the initial value of the proportional valve current to rise to the target current value of the proportional valve according to the current increment of the proportional valve.
Optionally, the determining the proportional valve current increment according to the load pressure value includes:
acquiring a proportional valve current increment relation table, wherein the proportional valve current increment relation table comprises a corresponding relation between a load pressure value and a proportional valve current increment;
and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value.
Optionally, the load pressure value is inversely related to the proportional valve current increase.
Optionally, the controlling the rotation speed of the engine to increase to the target rotation speed of the engine includes:
Determining a highest rotational speed increment of the engine according to the load pressure value;
and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine.
The embodiment of the application also provides a flameout prevention control device of the reloading forklift, which comprises the following components:
The acquisition unit is used for acquiring the angle of the control handle, the rotating speed of the engine, the load pressure value of the engine and the initial value of the proportional valve current;
a determining unit for determining a target rotational speed of the engine and a target current value of the proportional valve according to the angle of the operating handle;
the determining unit is further used for determining a proportional valve current increment according to the load pressure value;
a control unit for controlling the rotation speed of the engine to rise to a target rotation speed of the engine;
the control unit is also used for controlling the initial value of the proportional valve current to be increased to the target current value of the proportional valve according to the current increment of the proportional valve.
Optionally, the determining unit is specifically configured to:
acquiring a proportional valve current increment relation table, wherein the proportional valve current increment relation table comprises a corresponding relation between a load pressure value and a proportional valve current increment;
and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value.
Optionally, the load pressure value is inversely related to the proportional valve current increase.
Optionally, the control unit is specifically configured to:
Determining a highest rotational speed increment of the engine according to the load pressure value;
and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine.
The embodiment of the application also provides computer equipment, which comprises: a memory, a processor, and a bus system;
Wherein the memory is used for storing programs;
The processor is used for executing the program in the memory so as to realize any one of the reloading forklift flameout prevention control methods;
the bus system is used for connecting the memory and the processor so as to enable the memory and the processor to communicate.
The embodiment of the application also provides a computer readable storage medium which stores instructions that, when run on a computer, cause the computer to execute any one of the reloading forklift flameout prevention control methods described above.
The embodiment of the application provides a flameout prevention control method for a reloading forklift, which comprises the following steps: acquiring the angle of a control handle, the rotating speed of an engine, the load pressure value of the engine and the initial value of proportional valve current; determining a target rotating speed of an engine and a target current value of a proportional valve according to the angle of the control handle; determining a proportional valve current increment according to the load pressure value; controlling the rotation speed of the engine to rise to a target rotation speed of the engine; and controlling the initial value of the proportional valve current to rise to the target current value of the proportional valve according to the current increment of the proportional valve. Therefore, when the forklift is controlled, the proportional valve current increment can be determined according to the load pressure value of the engine, and the proportional valve current initial value is controlled to be increased to the proportional valve target current value according to the proportional valve current increment, so that the variation coordination of the opening degree of the proportional valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for controlling flameout prevention of a reloading forklift according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a flameout prevention control system of a reloading forklift according to an embodiment of the present application;
FIG. 3 is a schematic diagram showing a relationship between a load pressure value and a proportional valve current increment according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of a flameout prevention control device of a reloading forklift according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Along with the continuous promotion of industrial process and the rapid development of logistics industry, heavy equipment factories and ports and docks need a large amount of heavy material transfer vehicles, and heavy fork trucks can flexibly carry heavy goods in a very small space relative to traditional gantry cranes, so that the carrying efficiency is greatly improved, and all manufacturers are actively developing the heavy fork trucks due to huge market potential.
For the engineering machinery with stable forklift loads, when the working device does not work, the main control valve of the hydraulic system is usually closed, the engine runs at idle speed, and when the working device starts to work, for example, when goods are lifted, the operation is usually performed by adopting a mode of combining hands and feet, namely, the accelerator pedal is stepped on while the proportional multi-way valve handle is operated, and the operation mode has the defect that the hands and feet of a driver are required to be used for operation, so that the labor intensity is increased. The proportional multi-way valve can be also called as a proportional valve, and in addition, the coordination of the opening of the proportional multi-way valve and the rotation speed of the engine is difficult to ensure in the lifting process: in order to ensure enough power to drive the lifting cylinder, an engine accelerator pedal is generally stepped on, and a lifting proportion multi-way valve handle is operated after the rotation speed of the engine rises, so that the operation efficiency is reduced, and the energy consumption is increased; and if the proportional multi-way valve is operated faster than the engine throttle, the engine is easy to drop and even stall.
At present, the control handle is generally related to the engine speed and the current value of the proportional multi-way valve, so that a driver can control the engine speed and the current value of the proportional valve simultaneously by operating the control handle, and the problems of high operation intensity and fuel waste of the driver are solved. However, as the response rates of the engine speed and the proportional valve current value are different, the method still cannot accurately control the coordination of the opening degree of the proportional multi-way valve and the engine speed, so that the control stability of the forklift is low.
Specifically, when the control handle is in the middle position, the engine runs at idle speed, the proportional multi-way valve current value is 0, and when the action is executed, the angle of the control handle is only related to the set values of the proportional valve current and the engine speed, and the change process of the engine speed and the proportional valve current value is not controlled. The response of the engine is slow and needs 1-2 s, the response of the proportional valve is very fast, only about 100ms is needed, and the multi-way valve is opened in the process of increasing the rotating speed, so that the load of the engine is accelerated, the response is slower, the oil consumption is increased, and even the engine is flameout when the load is too large.
When a driver lifts heavy load, at the moment of operating the control handle, if the proportional valve current value directly corresponds to the handle angle, the proportional valve current value responds quickly and the engine speed responds slowly, and the engine can run in overload to stall at the moment; if the proportional valve current value is set in a delayed mode, the proportional valve current value is set after the rotating speed of the engine rises, and the problem that the operation efficiency is affected due to delayed lifting of the light-load time frame can be solved although the phenomenon that the engine is slowly accelerated or extinguished during heavy load can be avoided.
Therefore, in order to solve the above problems, the embodiments of the present application provide a method, an apparatus, a device, and a readable storage medium for controlling a reloading forklift to prevent flameout, which can improve the control stability of the forklift.
Referring to fig. 1, the flameout prevention control method for a reloading forklift provided by the embodiment of the application comprises the following steps.
S101, acquiring the angle of the control handle, the rotating speed of the engine, the load pressure value of the engine and the initial value of the proportional valve current.
In this embodiment, the angle of the steering handle of the forklift, the rotation speed of the engine, the load pressure value of the engine, and the initial value of the proportional valve current may be acquired first. It can be appreciated that when a user needs to lift an article by a forklift, the user can lift the article by operating the operating handle on the forklift and changing the angle of the operating handle. Specifically, the angle of the operation handle refers to an angle formed between the current operation handle after the operation and the operation handle at the time of standby. The angle of the control handle of the forklift at the moment CAN be read through a controller area network bus (Controller Area Network, CAN) arranged in the forklift, the rotating speed of the engine at the moment CAN be read from an engine controller in the forklift through the CAN bus, the load pressure value of the engine at the moment CAN be read from a main pump pressure sensor in the forklift through the CAN bus, and finally, the proportional valve current initial value CAN be obtained from the proportional multi-way valve through the CAN bus, and when the user operates the control handle of the forklift, the forklift is in a standby state, and the proportional valve current initial value CAN be 0. The proportional multi-way valve can also be a proportional electromagnetic valve, a proportional valve, a master control valve or the like.
S102, determining a target rotating speed of the engine and a target current value of the proportional valve according to the angle of the control handle.
In this embodiment, the target rotational speed of the engine and the proportional valve target current value may be determined according to the angle of the steering handle. It can be understood that the corresponding relation between the angle of the operating handle and the target rotation speed of the engine and the target current value of the proportional valve can be designed in advance, and then the target rotation speed of the engine and the target current value of the proportional valve corresponding to the angle can be found out according to the angle of the operating handle of the current forklift and the corresponding relation designed in advance. Wherein the target rotational speed of the engine refers to the rotational speed that the engine should reach when the operating handle is at the angle, and the proportional valve target current value refers to the value that the current in the proportional multi-way valve should reach when the operating handle is at the angle.
S103, determining the current increment of the proportional valve according to the load pressure value.
In this embodiment, the proportional valve current increase may be determined based on the load pressure value of the engine. It can be appreciated that, because the engine speed response of the forklift is slower when the load pressure value of the engine is larger, if the current increment of the proportional valve is larger at this time, the engine can be in overload operation to stall; when the load pressure value of the engine is smaller, the rotating speed response of the engine of the forklift is faster, if the current increment of the proportional valve is smaller at this time, the portal lifting is possibly slow to influence the operation efficiency, so the change coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured by determining the current increment of the proportional valve according to the load pressure value, and the control stability of the forklift can be improved. Specifically, the load pressure value and the proportional valve current increment may be in a negative correlation, that is, the greater the load pressure value of the engine, the smaller the proportional valve current increment; the smaller the load pressure value of the engine, the larger the proportional valve current increase.
In one possible implementation, a proportional valve current delta relationship table may be obtained, the proportional valve current delta relationship table including a correspondence between load pressure values and proportional valve current delta; and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value. It will be appreciated that the correspondence between the load pressure value and the proportional valve current increment may be pre-designed and then stored in the proportional valve current increment relationship table. After the load pressure value of the engine of the forklift at the moment is determined, the proportional valve current increment can be found out from the proportional valve current increment relation table according to the load pressure value, so that the initial value of the proportional valve current is controlled to be improved to the target current value of the proportional valve according to the proportional valve current increment, the variation coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved.
And S104, controlling the rotation speed of the engine to be increased to the target rotation speed of the engine.
In this embodiment, after the target rotation speed of the engine is determined, the rotation speed of the engine may be controlled to be raised to the target rotation speed of the engine. It will be appreciated that the target rotational speed of the engine may be sent to the engine controller via the CAN bus, through which the rotational speed of the engine is raised to the target rotational speed of the engine.
In one possible implementation, a maximum speed increase of the engine may be determined from the load pressure value; and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine. It can be understood that in order to improve the response timeliness of the engine, the highest rotation speed increment which does not cause the overload operation of the engine can be determined according to the load pressure value, then the rotation speed of the engine is controlled to be increased to the target rotation speed of the engine according to the highest rotation speed increment of the engine, so that the response time of the engine is reduced as much as possible, the response timeliness of the engine is improved, and the control stability of the forklift is further improved. The corresponding relation between the load pressure value and the maximum rotation speed increment of the engine can be preset according to the actual working condition of the forklift.
S105, controlling the initial value of the proportional valve current to rise to the target current value of the proportional valve according to the increment of the proportional valve current.
In this embodiment, after determining the proportional valve current increment, the proportional valve current initial value may be controlled to be raised to the proportional valve target current value according to the proportional valve current increment. It can be understood that after the proportional valve current increment is determined, the initial value of the proportional valve current can be gradually increased to the target current value of the proportional valve according to the proportional valve current increment, so that the variation coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved. Specifically, the proportional valve current initial value may be controlled according to the following cyclic formula:
；
Wherein, Is the intermediate value of proportional valve current,/>For the current value of the current circulation, the current value of the current circulation can be the initial value of the proportional valve current in the first circulation,/>Is the proportional valve current increment. And repeating the formula until the intermediate value of the proportional valve current is equal to the target current value of the proportional valve.
Therefore, the embodiment of the application provides the flameout prevention control method for the reloading forklift, when the forklift is controlled, the current increment of the proportional valve can be determined according to the load pressure value of the engine, and the initial value of the proportional valve current is controlled to be lifted to the target current value of the proportional valve according to the current increment of the proportional valve, so that the variation coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved.
Referring to fig. 2, the embodiment of the application further provides a flameout prevention control system for a reloading forklift, which comprises a vehicle-mounted controller (Vehicle Control Unit, VCU) 1, a main pump pressure sensor 2, a control handle 3, an engine controller (Elecmal Control Unit, ECU) 4, an engine 5, an oil pump 6, a main control valve 7 and a working cylinder 8, wherein the main control valve can also be called a proportional multi-way valve.
The main pump pressure sensor is arranged at the outlet of the main pump, the detection signal is connected to the VCU of the vehicle-mounted controller, the control handle and the Engine Controller (ECU) are connected with the VCU through the CAN bus, the output end of the controller is connected with the proportional electromagnetic valve, the engine drives the main pump, and the output high-pressure oil enters the working cylinder through the proportional electromagnetic valve to execute corresponding actions.
Specifically, the vehicle-mounted controller reads the angle of the control handle through the CAN bus; then according to the corresponding relation between the angle of the operating handle designed in advance and the target rotating speed n of the engine and the target current value of the proportional valve, determining the target rotating speed of the engine and the target current value of the proportional valve, and sending the target rotating speed of the engine to an engine ECU through a CAN bus; and then reading a main pump pressure sensor to obtain a load pressure value, determining a proportional valve current increment according to the corresponding relation between the load pressure and the proportional valve current increment, and controlling the initial value of the proportional valve current according to the following formula:
；
Wherein, Is the intermediate value of proportional valve current,/>Is the initial value of proportional valve current,/>Is the proportional valve current increment. And repeating the formula until the intermediate value of the proportional valve current is equal to the target current value of the proportional valve.
Wherein, the corresponding relation between the main pump pressure, namely the load pressure value of the engine and the proportional valve current increment is shown in FIG. 3, when the main pump pressure is represented byIncreased to/>When the proportional valve current is increased by/>Reduced to/>When the load pressure is small, the weight lifted by the forklift is light, and the engine has the capacity of carrying out load acceleration, so that the increment of the current value of the set proportional valve is larger; when the load pressure is large, the heavy object lifted by the forklift is heavy, and the capacity of accelerating the heavy load of the engine is weak, so that the increment of the current value of the set proportional valve is small and the load is slowly loaded, and the engine is ensured not to stall while the rotating speed of the engine is increased.
Therefore, the embodiment of the application provides the flameout prevention control system for the reloading forklift, the vehicle-mounted controller controls the rising slope of the current value of the proportional valve by detecting the pressure of the main pump, namely the load pressure value of the engine, and the rotating speed value of the engine is directly set according to the angle of the control handle to ensure the stable operation of the whole forklift, so that the system not only prevents the flameout of the engine under the heavy load working condition, but also ensures the rapid action of the lifting system during light load.
Referring to fig. 4, an embodiment of the present application provides a flameout prevention control device for a reloading forklift, where the device includes:
An acquisition unit 401 for acquiring an angle of the steering handle, a rotational speed of the engine, a load pressure value of the engine, and an initial value of the proportional valve current;
a determining unit 402 for determining a target rotational speed of the engine and a target proportional valve current value according to an angle of the steering handle;
the determining unit 402 is further configured to determine a proportional valve current increment according to the load pressure value;
A control unit 403, configured to control the rotation speed of the engine to increase to a target rotation speed of the engine;
the control unit 403 is further configured to control the initial value of the proportional valve current to rise to the target current value of the proportional valve according to the increase of the proportional valve current.
Optionally, the determining unit 402 is specifically configured to:
acquiring a proportional valve current increment relation table, wherein the proportional valve current increment relation table comprises a corresponding relation between a load pressure value and a proportional valve current increment;
and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value.
Optionally, the load pressure value is inversely related to the proportional valve current increase.
Optionally, the control unit 403 is specifically configured to:
Determining a highest rotational speed increment of the engine according to the load pressure value;
and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine.
Therefore, the embodiment of the application provides the flameout prevention control device for the reloaded forklift, when the forklift is controlled, the current increment of the proportional valve can be determined according to the load pressure value of the engine, and the initial value of the proportional valve current is controlled to be lifted to the target current value of the proportional valve according to the current increment of the proportional valve, so that the variation coordination of the opening degree of the proportional multi-way valve and the rotating speed of the engine can be ensured, and the control stability of the forklift can be improved.
The embodiment of the application also provides computer equipment, which comprises: a memory, a processor, and a bus system;
Wherein the memory is used for storing programs;
The processor is used for executing the program in the memory so as to realize any one of the reloading forklift flameout prevention control methods;
the bus system is used for connecting the memory and the processor so as to enable the memory and the processor to communicate.
The embodiment of the application also provides a computer readable storage medium which stores instructions that, when run on a computer, cause the computer to execute any one of the reloading forklift flameout prevention control methods described above.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The flameout prevention control method for the reloading forklift is characterized by comprising the following steps of:
Acquiring the angle of a control handle, the rotating speed of an engine, the load pressure value of the engine and the initial value of proportional valve current;
Determining a target rotating speed of an engine and a target current value of a proportional valve according to the angle of the control handle;
determining a proportional valve current increment according to the load pressure value;
Controlling the rotation speed of the engine to rise to a target rotation speed of the engine;
and controlling the initial value of the proportional valve current to rise to the target current value of the proportional valve according to the current increment of the proportional valve.
2. The method of claim 1, wherein said determining a proportional valve current delta from said load pressure value comprises:
acquiring a proportional valve current increment relation table, wherein the proportional valve current increment relation table comprises a corresponding relation between a load pressure value and a proportional valve current increment;
and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value.
3. A method according to claim 1 or 2, wherein the load pressure value is inversely related to the proportional valve current increase.
4. The method of claim 1, wherein the controlling the rotational speed of the engine to increase to the target rotational speed of the engine comprises:
Determining a highest rotational speed increment of the engine according to the load pressure value;
and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine.
5. A reload forklift flameout control device, the device comprising:
The acquisition unit is used for acquiring the angle of the control handle, the rotating speed of the engine, the load pressure value of the engine and the initial value of the proportional valve current;
a determining unit for determining a target rotational speed of the engine and a target current value of the proportional valve according to the angle of the operating handle;
the determining unit is further used for determining a proportional valve current increment according to the load pressure value;
a control unit for controlling the rotation speed of the engine to rise to a target rotation speed of the engine;
the control unit is also used for controlling the initial value of the proportional valve current to be increased to the target current value of the proportional valve according to the current increment of the proportional valve.
6. The apparatus according to claim 5, wherein the determining unit is specifically configured to:
acquiring a proportional valve current increment relation table, wherein the proportional valve current increment relation table comprises a corresponding relation between a load pressure value and a proportional valve current increment;
and searching the proportional valve current increment from the proportional valve current increment relation table according to the load pressure value.
7. The apparatus of claim 5 or claim 6, wherein the load pressure value is inversely related to the proportional valve current delta.
8. The device according to claim 5, characterized in that said control unit is specifically configured to:
Determining a highest rotational speed increment of the engine according to the load pressure value;
and controlling the rotation speed of the engine to rise to the target rotation speed of the engine according to the maximum rotation speed increment of the engine.
9. A computer device, comprising: a memory, a processor, and a bus system;
Wherein the memory is used for storing programs;
the processor being adapted to execute a program in the memory to implement the method of any one of claims 1 to 4;
the bus system is used for connecting the memory and the processor so as to enable the memory and the processor to communicate.
10. A computer readable storage medium storing instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410241415.1A CN117819439B (en) | 2024-03-04 | 2024-03-04 | Flameout prevention control method and flameout prevention control device for reloading forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410241415.1A CN117819439B (en) | 2024-03-04 | 2024-03-04 | Flameout prevention control method and flameout prevention control device for reloading forklift |
Publications (2)
| Publication Number | Publication Date |
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| CN117819439A CN117819439A (en) | 2024-04-05 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05229791A (en) * | 1992-02-19 | 1993-09-07 | Komatsu Forklift Co Ltd | Cargo handling control device for industrial vehicle |
| CN102864810A (en) * | 2012-10-22 | 2013-01-09 | 三一重机有限公司 | Hydraulic energy-saving device of engineering plant, control method and excavator |
| CN103925089A (en) * | 2014-04-09 | 2014-07-16 | 三一汽车起重机械有限公司 | Engineering machinery, dynamic energy saving method and dynamic energy saving system |
| CN104150402A (en) * | 2013-05-13 | 2014-11-19 | 株式会社丰田自动织机 | Industrial vehicle and method for controlling industrial vehicle |
| CN117627904A (en) * | 2022-08-18 | 2024-03-01 | 中国农业机械化科学研究院集团有限公司 | Harvester and engine overload self-adaptive adjusting device and method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05229791A (en) * | 1992-02-19 | 1993-09-07 | Komatsu Forklift Co Ltd | Cargo handling control device for industrial vehicle |
| CN102864810A (en) * | 2012-10-22 | 2013-01-09 | 三一重机有限公司 | Hydraulic energy-saving device of engineering plant, control method and excavator |
| CN104150402A (en) * | 2013-05-13 | 2014-11-19 | 株式会社丰田自动织机 | Industrial vehicle and method for controlling industrial vehicle |
| CN103925089A (en) * | 2014-04-09 | 2014-07-16 | 三一汽车起重机械有限公司 | Engineering machinery, dynamic energy saving method and dynamic energy saving system |
| CN117627904A (en) * | 2022-08-18 | 2024-03-01 | 中国农业机械化科学研究院集团有限公司 | Harvester and engine overload self-adaptive adjusting device and method thereof |
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