CN113910918B - Multi-station automatic speed regulation control system of electric loader - Google Patents
Multi-station automatic speed regulation control system of electric loader Download PDFInfo
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- CN113910918B CN113910918B CN202111144332.3A CN202111144332A CN113910918B CN 113910918 B CN113910918 B CN 113910918B CN 202111144332 A CN202111144332 A CN 202111144332A CN 113910918 B CN113910918 B CN 113910918B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/28—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed without contact making and breaking, e.g. using a transductor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/40—Working vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an automatic speed regulation control system for multiple working conditions of an electric loader, which comprises a detection module: the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader, and the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader; and the control module is used for: the invention can ensure the speed requirements of the shovel loading operation and different walking working conditions, ensure the operation safety in the operation process, properly save energy and reduce consumption and prolong the single charging interval.
Description
Technical Field
The invention relates to an automatic speed regulation control system for an electric loader under multiple working conditions, and belongs to the technical field of loaders.
Background
In order to respond to the low-carbon environment-friendly policy and the emission requirements of key areas, new energy vehicles are not limited to passenger vehicles, and many engineering machinery main engine factories have completed research and development trial production of new energy models, wherein the key points are that a shovel loader, an electric loader, are described. Because the scheme framework of electric installation, the whole car cancels traditional gearbox in the operation in-process, does not have the gear to switch and realizes the regulation of speed, through accelerator pedal regulating motor output torque, realizes the change of speed of a motor vehicle, its shortcoming lies in:
1. the too high speed of shovel dress in-process area material transition has certain potential safety hazard, and simultaneously, the route is nearer in the V type shovel dress operation, and the driver is used to the mode that big throttle was to the bottom, does not restrict the moment of torsion of walking motor and leads to the output energy consumption higher, and the highest speed of a motor that needs under this kind of mode is lower.
2. The maximum speed limit in the long-distance traveling process is low, the efficiency and the experience of a driver are seriously influenced, and the maximum speed limit is in conflict with the 1 st point.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an automatic speed regulation control system for multiple working conditions of an electric loader, so as to solve the technical problems of high energy consumption, poor driver experience and the like in the prior art, wherein the speed of the electric loader is not limited under different working conditions.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automatic speed regulation control system for multiple working stations of an electric loader, comprising:
and a detection module: the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader, and the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader;
and the control module is used for: the control system comprises a VCU control unit which is used for controlling the motion state of the loader and is respectively and electrically connected with a first pressure sensor and a second pressure sensor, wherein the VCU control unit is used for controlling the motion of the loader according to the detection data of the first pressure sensor and the second pressure sensor.
As a preferred technical scheme of the invention, the device further comprises a control module, wherein the control module comprises a rocker switch and a knob switch, and the rocker switch is used for controlling loading to enter an automatic mode or a manual mode;
when the loader enters a manual mode, the knob switch is used for controlling the state of the movement of the loader;
when the loader enters an automatic mode, the VCU control unit controls the state of the movement of the loader according to the detection data of the first pressure sensor and the second pressure sensor.
As a preferred embodiment of the present invention, the loader does not respond to control of the knob switch when the loader is in an automatic mode.
As a preferable technical scheme of the invention, the gear positions of the knob switch are not less than two.
As a preferable technical scheme of the invention, three gears of the knob switch are arranged, and the three gears respectively correspond to low-speed running, medium-speed running and high-speed running of the loader.
As a preferable technical scheme of the invention, a pump port pressure threshold value of the working pump is set when the working pump works, and a pressure threshold value of a large cavity of a movable arm oil cylinder of a loader when the loader bears a heavy object is set;
the loader is in an automatic mode:
when the pressure value detected by the first pressure sensor is larger than the pressure threshold value of the pump port of the working pump, the VCU control unit judges that the loader is in a shovel loading working condition, and controls the running speed of the loader not to exceed the highest speed under the low-speed running gear;
when the pressure value detected by the first pressure sensor is smaller than the pressure threshold of the pump port of the working pump and the pressure value detected by the second pressure sensor is larger than the pressure threshold of the large cavity of the movable arm oil cylinder, the VCU control unit judges that the loader is in the loaded running working condition and controls the running speed of the loader not to exceed the highest speed under the medium-speed running gear;
when the pressure value detected by the first pressure sensor is smaller than the pressure threshold of the pump opening of the working pump and the pressure value detected by the second pressure sensor is smaller than the pressure threshold of the large cavity of the movable arm oil cylinder, the VCU control unit judges that the loader is in an idle running working condition and controls the running speed of the loader not to exceed the highest speed under a high-speed running gear.
As a preferable embodiment of the present invention, the time interval for switching the traveling speed of the loader in the automatic mode is not less than 10S.
As a preferable technical scheme of the invention, the invention further comprises a display module, wherein the display module is used for displaying the state information of the whole machine of the loader.
An electric loader adopts the automatic speed regulation control system of multiple working stations of the electric loader.
Compared with the prior art, the invention has the beneficial effects that:
the invention can detect the pressure of the pump opening of the working pump and the pressure of the large cavity of the movable arm cylinder
The invention can judge the working state of the loader by detecting the pressure of the pump opening of the working pump and the pressure of the large cavity of the movable arm cylinder, and control the loader to enter a mode matched with the judging result, thereby ensuring the speed requirements of the shoveling operation and different walking working conditions, ensuring the operation safety in the operation process, properly saving energy, reducing consumption and prolonging the single charging interval.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a flow chart of the present invention.
In the figure: 1-a working pump; 2-multiple-way valve; 3-a valve core I of the multi-way valve; 4-a valve core II of the multi-way valve; 5-a hydraulic oil tank; 6-a movable arm oil cylinder; 7-a tipping bucket oil cylinder; 8-a first pressure sensor; 9-a second pressure sensor; 10-rocker switch; 11-a knob switch; a 12-VCU control unit; 13-a motor controller; 14-a walking motor.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, 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.
As shown in fig. 1 and 2, an automatic speed regulation control system for multiple working stations of an electric loader, a detection module: the hydraulic system working pump 1 comprises a first pressure sensor 8 and a second pressure sensor 9, wherein the first pressure sensor 8 is arranged in a pump port oil way of the hydraulic system working pump 1 and is used for detecting the pressure value of the working pump 1 during the shovel loading operation of the loader, and the second pressure sensor 9 is connected in a large cavity oil way of a movable arm oil cylinder 6 of the hydraulic system and is used for detecting the pressure value of a large cavity of the movable arm oil cylinder 6 during the lifting or lowering of a working implement of the loader;
and the control module is used for: comprises a VCU control unit 12 for controlling the motion state of the loader and electrically connected with the first pressure sensor 8 and the second pressure sensor 9 respectively, wherein the VCU control unit 12 is used for controlling the motion of the loader according to the detection data of the first pressure sensor 8 and the second pressure sensor 9.
The hydraulic system of the loader comprises a working pump 1, a hydraulic oil tank 5, a multi-way valve 2, a multi-way valve core I3, a multi-way valve core II4, a movable arm oil cylinder 6 and a tipping bucket oil cylinder 7; the oil suction port of the working pump 1 is connected with a hydraulic oil tank 5; the oil outlet of the working pump 1 is connected with the P port of the multi-way valve 2; the multi-way valve 2 comprises a multi-way valve core I3 and a multi-way valve core II4; the port A1 of the multi-way valve 2 is connected with a large cavity of the movable arm cylinder 6; the port B1 of the multi-way valve 2 is connected with a small cavity of the movable arm cylinder 6; the port A2 of the multi-way valve 2 is connected with a large cavity of the tipping bucket oil cylinder 7; the port B2 of the multi-way valve 2 is connected with a small cavity of the tipping bucket oil cylinder 7; the T port of the multi-way valve 2 is connected with a hydraulic oil tank 5 through a filter element; for effecting movement of a drive loader implement.
The loader further comprises a traveling motor 14 and a motor controller 13, wherein the VCU control unit 12 is communicated with the motor controller 13 through CAN_ H, CAN _L, the motor controller 13 is connected with the traveling motor 14 through a low-voltage interface, and three-phase ends of the traveling motor 14 are respectively connected with U, V, W pins of the motor controller 13.
When the first pressure sensor 8 and the second pressure sensor 9 are electrically connected with the VCU control unit 12, a signal line of the first pressure sensor 8 is connected with a SEN1 pin of the VCU control unit 12, a signal line of the second pressure sensor 9 is connected with a SEN2 pin of the VCU control unit 12, and VCC+ pins supply power to the two pressure sensors.
The device also comprises a control module, wherein the control module comprises a rocker switch 10 and a knob switch 11, and the rocker switch 10 is used for controlling loading to enter an automatic mode or a manual mode;
when the loader enters a manual mode, the knob switch 11 is used for controlling the state of the movement of the loader; when the loader enters the automatic mode, the state of movement of the loader is controlled by the VCU control unit 12 based on the detection data of the first pressure sensor 8 and the second pressure sensor 9.
Namely, the working state of the loader is judged by detecting the change of the pressure, and the movement of the loader can be further controlled according to the judging result.
It should be noted that the default is manual mode in the initial rotation state of the loader.
When the loader is in the automatic mode, the loader does not respond to the control of the knob switch 11, and the problem that the normal movement of the loader is affected by the manual operation of a driver in the automatic mode is mainly avoided.
The gear positions of the knob switch 11 are not less than two; three gears of the knob switch 11 are arranged, and the three gears respectively correspond to low-speed running, medium-speed running and high-speed running of the loader.
Embodiment one:
the rocker switch 10 is in a manual mode, which is a loader default mode, and a driver can manually start a gear shifting function according to own function requirements, specifically:
the knob switch 11 rotates to a gear corresponding to the low-speed running of the loader, the VCU control unit 12 outputs a speed limiting execution parameter corresponding to the gear through the judgment of a control strategy, the speed limiting execution parameter is transmitted to the motor controller 13 through CAN communication, meanwhile, the motor controller 13 reads the rotating speed of the running motor 14, compares the current rotating speed with the gear set value, controls the running motor 14 to output torque, enables the running motor 14 to keep the highest speed limit of the gear, and similarly, the knob switch 11 rotates to the gear corresponding to the high-speed running or the low-speed running of the loader, so that the high-speed running or the medium-speed running of the loader CAN be realized.
The high-speed drive gear is a default gear of the loader in the manual mode.
Setting a pump port pressure threshold value of the working pump 1 during working and a pressure threshold value of a large cavity of the movable arm oil cylinder 6 of the loader when carrying heavy objects; the loader is in an automatic mode:
when the pressure value detected by the first pressure sensor 8 is greater than the pressure threshold value of the pump port of the working pump 1, the VCU control unit 12 judges that the loader is in a shovel loading working condition and controls the running speed of the loader not to exceed the highest speed under the low-speed running gear;
namely, when the movable arm oil cylinder 6 or the tipping bucket oil cylinder 7 is in a motion state, the multi-way valve 2 core I or the multi-way valve 2 core II of the multi-way valve 2 is in a working position under the pushing of pilot oil, and at the moment, high-pressure oil of the working pump 1 enters or the large cavity of the tipping bucket oil cylinder 7 through the working position of the multi-way valve 2 core I or the multi-way valve 2 core II; the first pressure sensor 8 detects the pressure of the pump opening of the working pump 1 and transmits the detected value to the VCU control unit 12, the VCU control unit 12 determines that the working state is a shovel loading working state through strategy judgment, if the detected value is higher than a set threshold value, the rotating speed of the running motor 14 is transmitted to the VCU control unit 12 through the motor controller 13, the VCU control unit 12 calculates the motor speed limiting execution parameters under the shovel loading working condition through algorithm matching, and the output torque of the running motor 14 is limited when the rotating speed of the running motor 14 exceeds the set value through comparison with the actual feedback rotating speed of the running motor 14, so that the limitation of the highest speed of the low-speed running gear is realized.
When the pressure value detected by the first pressure sensor 8 is smaller than the pressure threshold value of the pump opening of the working pump 1 and the pressure value detected by the second pressure sensor 9 is larger than the pressure threshold value of the large cavity of the movable arm oil cylinder 6, the VCU control unit 12 judges that the loader is in the load running working condition and controls the running speed of the loader not to exceed the highest speed under the medium-speed running gear;
when both the movable arm oil cylinder 6 and the tipping bucket oil cylinder 7 are in a static state, the multi-way valve 2 core I and the multi-way valve 2 core II of the multi-way valve 2 are both in the middle position, at the moment, the oil outlet of the working pump 1 directly returns to the hydraulic oil tank 5 through the middle position of the valve core of the multi-way valve 2, at the moment, the first pressure sensor 8 detects the pressure of the pump opening of the working pump 1, and the non-shovel operation state is judged;
on the basis of judging the non-shovel work state, the second pressure sensor 9 further detects a large cavity pressure value of the movable arm oil cylinder 6 and transmits the detected value to the VCU control unit 12, the VCU control unit 12 is in a load running state through a control strategy, if the pressure value is higher than a set threshold value, at the moment, the rotating speed of the running motor 14 is transmitted to the VCU control unit 12 through the motor controller 13, the VCU control unit 12 is matched through an algorithm, a motor speed limiting execution parameter under the load running working condition is calculated, and the output torque of the running motor 14 is limited when the rotating speed of the running motor 14 exceeds the set value through comparison with the actual feedback rotating speed of the running motor 14, so that the maximum speed limitation of a medium-speed running gear is realized.
When the pressure value detected by the first pressure sensor 8 is smaller than the pressure threshold of the pump opening of the working pump 1 and the pressure value detected by the second pressure sensor 9 is smaller than the pressure threshold of the large cavity of the movable arm oil cylinder 6, the VCU control unit 12 judges that the loader is in an idle running working condition and controls the running speed of the loader not to exceed the highest speed under a high-speed running gear.
On the basis of judging the non-shovel work state, the second pressure sensor 9 further detects the large cavity pressure value of the movable arm oil cylinder 6 and transmits the detected value to the VCU control unit 12, the VCU control unit 12 is in an idle running state through control strategy analysis, if the pressure value is lower than a set threshold value, the running motor 14 rotating speed is transmitted to the VCU control unit 12 through the motor controller 13, the VCU control unit 12 is matched through an algorithm, the motor speed limiting execution parameter under the idle running working condition is calculated, and the limit of the highest speed of the high-speed running gear is realized by limiting the output torque of the running motor 14 when the running motor 14 rotating speed exceeds the set value through comparison with the actual feedback rotating speed of the running motor 14.
The time interval for the loader to switch the travel speed in the automatic mode is not less than 10S.
The problem of frequent switching of the travel speed of the loader in the automatic mode is prevented.
The system also comprises a display module, wherein the display module is used for displaying the state information of the whole machine of the loader.
The display module is a display screen, and the VCU control unit 12 and the motor controller 13 are connected with the display screen through a CAN bus; the display screen comprises a manual/automatic mode state indicator lamp and a current gear indicator lamp, and is also used for displaying a current gear adjusting mode and a current gear state, and the rotating speed and the vehicle speed of a front motor, so that a driver can monitor the complete machine rotation state of the loader in real time.
An electric loader adopts a multi-working-condition automatic speed regulation control system.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
1. An automatic speed regulation control system for multiple working stations of an electric loader, comprising:
and a detection module: the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader, and the hydraulic system working pump opening oil way is used for detecting a working pump pressure value during loading operation of the loader;
and the control module is used for: the control system comprises a VCU control unit, a first pressure sensor and a second pressure sensor, wherein the VCU control unit is used for controlling the motion state of the loader and is electrically connected with the first pressure sensor and the second pressure sensor respectively, and the VCU control unit is used for controlling the motion of the loader according to the detection data of the first pressure sensor and the second pressure sensor;
a steering module comprising a rocker switch for controlling loading into an automatic mode or a manual mode;
when the loader enters an automatic mode, the VCU control unit controls the movement of the loader according to the detection data of the first pressure sensor and the second pressure sensor;
setting a pump port pressure threshold value of the working pump in working, and setting a pressure threshold value of a large cavity of the movable arm oil cylinder when a loader is at the highest position of no-load lifting, wherein the loader is in an automatic mode:
when the pressure value detected by the first pressure sensor is larger than the pressure threshold value of the pump port of the working pump, the VCU control unit judges that the loader is in a shovel loading working condition, and controls the running speed of the loader not to exceed the highest speed under the low-speed running gear;
when the pressure value detected by the first pressure sensor is not greater than the pressure threshold of the pump port of the working pump and the pressure value detected by the second pressure sensor is greater than the pressure threshold of the large cavity of the movable arm oil cylinder, the VCU control unit judges that the loader is in the load running working condition and controls the running speed of the loader not to exceed the highest speed under the medium-speed running gear;
when the pressure value detected by the first pressure sensor is not greater than the pressure threshold of the pump opening of the working pump and the pressure value detected by the second pressure sensor is not greater than the pressure threshold of the large cavity of the movable arm oil cylinder, the VCU control unit judges that the loader is in an idle running working condition and controls the running speed of the loader not to exceed the highest speed under a high-speed running gear.
2. The multiple task automatic speed control system of an electric loader of claim 1, wherein the steering module further comprises a knob switch;
when the loader enters a manual mode, the knob switch is used for controlling the movement state of the loader.
3. The multiple station automatic speed control system for an electric loader of claim 2, wherein the loader is not responsive to control of the rotary switch when the loader is in the automatic mode.
4. The multi-station automatic speed regulation control system of an electric loader according to claim 3, wherein the gear positions of the knob switch are not less than two.
5. The multi-station automatic speed regulation control system of an electric loader according to claim 4, wherein three gear positions of the knob switch are provided, and the three gear positions correspond to low-speed running, medium-speed running and high-speed running of the loader, respectively.
6. The multi-station automatic speed regulation control system of an electric loader according to claim 1, wherein the time interval for switching the traveling speed of the loader in the automatic mode is not less than 10S.
7. The multi-station automatic speed regulation control system of an electric loader of claim 1, further comprising a display module for displaying complete machine status information of the loader.
8. An electric loader characterized in that the multi-operating automatic speed regulation control system according to any one of claims 1 to 7 is employed.
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| CN202111144332.3A CN113910918B (en) | 2021-09-28 | 2021-09-28 | Multi-station automatic speed regulation control system of electric loader |
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| CN105155611A (en) * | 2015-08-27 | 2015-12-16 | 徐工集团工程机械股份有限公司科技分公司 | Intelligent control system of fixed-displacement hydraulic system for loader |
| CN111237068A (en) * | 2020-02-27 | 2020-06-05 | 淮阴工学院 | Control method for improving power utilization rate of loader |
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