CN111963672B

CN111963672B - Gear adjusting system, method, device, equipment and electric engineering machinery

Info

Publication number: CN111963672B
Application number: CN202010892882.2A
Authority: CN
Inventors: 巩朝鹏; 明巧红; 邓宗南
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2022-05-03
Anticipated expiration: 2040-09-02
Also published as: CN111963672A

Abstract

The application provides a gear adjusting system, method, device, equipment and electric engineering machinery, and relates to the technical field of engineering machinery. The system comprises: the system comprises a motor, a hydraulic pump, a plurality of groups of hydraulic pressure sensors, a main control valve, a vehicle control unit and a controller; each group of hydraulic pressure sensors are respectively arranged at an oil inlet and an oil outlet of one action valve; the vehicle control unit is electrically connected with a plurality of groups of hydraulic pressure sensors to receive the inlet and outlet pressures of the corresponding action valves collected by each group of hydraulic pressure sensors; the vehicle control unit is used for sending a motor control instruction to the controller according to the inlet and outlet pressure acquired by the plurality of groups of hydraulic pressure sensors; the controller controls the motor to output power of a preset gear, so that the motor adjusts hydraulic pressure output to the main control valve by the hydraulic pump. In the scheme of this application, realized the automatically regulated of gear, greatly reduced engineering machine tool operation's complexity.

Description

Gear adjusting system, method, device, equipment and electric engineering machinery

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a gear adjusting system, method, device and equipment and an electric engineering machine.

Background

In the conventional fuel engineering machinery, chemical energy is converted into mechanical energy by using a diesel engine, the mechanical energy is converted into hydraulic energy by a hydraulic pump, the hydraulic energy is distributed to each actuating element by a hydraulic system, and finally the hydraulic energy is converted into the mechanical energy by each actuating element, so that various motions of the engineering machinery are realized.

At present, the traditional engineering machinery is divided into three modes, each mode is divided into eleven gears, the traditional engineering machinery needs an operator to select a proper gear according to own experience, and matched gears are adjusted under different working conditions.

However, the conventional engineering machinery is adopted, an operator needs to select a proper gear according to own experience, and the matched gear needs to be adjusted under different working conditions, so that the operation difficulty of the engineering machinery is greatly increased.

Disclosure of Invention

The invention aims to provide a gear adjusting system, a method, a device, equipment and an electric engineering machine aiming at the defects in the prior art, so as to realize automatic gear adjustment of the electric engineering machine and greatly reduce the complexity of operation of the engineering machine.

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

in a first aspect, an embodiment of the present application provides a gear adjustment system for an electrical engineering machine, including: the system comprises a motor, a hydraulic pump, a plurality of groups of hydraulic pressure sensors, a main control valve, a vehicle control unit and a controller;

the motor is connected with the hydraulic pump, and the hydraulic pump is connected with the main control valve so as to control the hydraulic pump to provide hydraulic pressure for the main control valve;

a main loop of the main control valve is provided with a plurality of action valves, and each action valve is connected with an actuating mechanism; each group of hydraulic pressure sensors are respectively arranged at an oil inlet and an oil outlet of one action valve;

the vehicle control unit is electrically connected with the plurality of groups of hydraulic pressure sensors to receive the inlet and outlet pressures of the corresponding action valves acquired by each group of hydraulic pressure sensors;

the vehicle control unit is connected with the controller to send a motor control instruction to the controller according to the inlet and outlet pressure acquired by the plurality of groups of hydraulic pressure sensors;

the controller is further connected with the motor, and the motor is further connected with a hydraulic pump so as to control the motor to output power of a preset gear according to the motor control instruction, so that the motor adjusts the hydraulic pressure output to the main control valve by the hydraulic pump.

Optionally, the gear adjustment system further comprises: a load pressure sensor; the side loop of the main control valve is provided with the load pressure sensor, the vehicle control unit is further connected with the load pressure sensor to receive the load pressure collected by the load pressure sensor, and the controller is sent out a motor control instruction according to the load pressure and the inlet and outlet pressures collected by the multiple groups of hydraulic pressure sensors.

In a second aspect, an embodiment of the present application further provides an electrical engineering machine, including: in the gear shift position adjusting system provided in the embodiment of the first aspect, each set of hydraulic pressure sensors in the gear shift position adjusting system is respectively disposed at an inlet and an outlet of an action valve corresponding to one actuator.

In a third aspect, an embodiment of the present application further provides a gear adjustment method for an electrical engineering machine, which is applied to a vehicle control unit in the gear adjustment system provided in the foregoing first aspect, where the method includes:

acquiring a plurality of groups of inlet and outlet pressures of corresponding action valves acquired by the plurality of groups of hydraulic pressure sensors;

determining a target gear of the motor according to the multiple groups of inlet and outlet pressures;

and outputting a motor control instruction corresponding to the target gear to the controller, so that the controller controls the motor to output the power of the preset gear according to the motor control instruction corresponding to the target gear, and the motor adjusts the hydraulic pressure output from the hydraulic pump to the main control valve.

Optionally, the method further comprises:

acquiring the load pressure acquired by the load pressure sensor;

the determining the target gear of the motor according to the multiple groups of inlet and outlet pressures comprises:

and determining a target gear of the motor according to the load pressure and the multiple groups of inlet and outlet pressures.

Optionally, the determining a target gear of the motor according to the load pressure and the multiple sets of inlet/outlet pressures includes:

determining whether the load pressure and each set of inlet and outlet pressures increase or decrease, respectively, relative to a previous time;

and if the load pressure is increased and at least one group of inlet and outlet pressure is increased, determining the gear corresponding to the group number of the inlet and outlet pressure increase as the target gear according to the group number of the inlet and outlet pressure increase.

Optionally, the determining a target gear of the motor according to the load pressure and the multiple sets of inlet/outlet pressures further includes:

and if the load pressure and the pressure of the plurality of groups of inlet and outlet are reduced, determining a preset minimum gear as the target gear.

Optionally, different sets correspond to different gears, and the larger the set number is, the larger the gear is; and if the number of the groups of the inlet and outlet pressure increase is equal to the number of the action valves, the target gear is a preset maximum gear.

In a fourth aspect, an embodiment of the present application further provides a gear adjustment device for an electrical engineering machine, which is applied to a vehicle control unit in the gear adjustment system provided in the foregoing first aspect, where the device includes: the device comprises an acquisition module, a determination module and an output module;

the acquisition module is used for acquiring a plurality of groups of inlet and outlet pressures of the corresponding action valves acquired by the plurality of groups of hydraulic pressure sensors;

the determining module is used for determining a target gear of the motor according to the multiple groups of inlet and outlet pressures;

the output module is used for outputting a motor control instruction corresponding to the target gear to the controller, so that the controller controls the motor to output the power of the preset gear according to the motor control instruction corresponding to the target gear, and the motor adjusts the hydraulic pressure output to the main control valve by the hydraulic pump.

Optionally, the obtaining module is further configured to obtain a load pressure collected by the load pressure sensor;

the determining module is further configured to:

Optionally, the determining module is further specifically configured to:

In a fifth aspect, an embodiment of the present application further provides a gear adjustment device for an electrical engineering machine, including: a memory storing a computer program executable by the processor, and a processor configured to execute the gear adjusting method of the electric construction machine provided by the embodiment of the third aspect.

In a sixth aspect, the present application further provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is executed by a processor to execute the gear adjustment method of the electric construction machine provided in the third aspect.

The beneficial effect of this application is:

the application provides a gear adjusting system, a method, a device, equipment and an electric engineering machine, wherein the gear adjusting system comprises: the system comprises a motor, a hydraulic pump, a plurality of groups of hydraulic pressure sensors, a main control valve, a vehicle control unit and a controller; the motor is connected with the hydraulic pump, and the hydraulic pump is connected with the main control valve to control the hydraulic pump to provide hydraulic pressure for the main control valve; a main loop of the main control valve is provided with a plurality of action valves, and each action valve is connected with an actuating mechanism; each group of hydraulic pressure sensors are respectively arranged at an oil inlet and an oil outlet of one action valve; the vehicle control unit is electrically connected with a plurality of groups of hydraulic pressure sensors to receive the inlet and outlet pressures of the corresponding action valves collected by each group of hydraulic pressure sensors; the vehicle control unit is connected with the controller so as to send a motor control instruction to the controller according to the inlet and outlet pressure acquired by the plurality of groups of hydraulic pressure sensors; the controller is further connected with a motor, the motor is further connected with a hydraulic pump, so that the motor is controlled to output power of a preset gear according to a motor control instruction, and the motor is enabled to regulate hydraulic pressure output to the main control valve by the hydraulic pump. In the scheme of this application, through the import and export pressure of the corresponding action valve that vehicle control unit gathered according to multiunit hydraulic pressure sensor, send the motor control instruction to the controller, and then make the power that the gear was predetermine in the control motor output, and make the hydraulic pressure of motor regulation hydraulic pump output to main control valve, realized the automatically regulated of gear, greatly reduced the complexity of engineering machine tool operation.

In addition, this gear adjustment system of electric engineering machine tool still includes: load pressure sensor is provided with load pressure sensor on the side return circuit of main control valve, and vehicle control unit still connects load pressure sensor to receive the load pressure that load pressure sensor gathered, according to the exit pressure that load pressure and multiunit hydraulic pressure sensor gathered, send the motor control instruction to the controller, and make the controller control motor output according to the motor control instruction and predetermine the power of gear, make the motor adjust the hydraulic pump export extremely main control valve's hydraulic pressure, thereby make the actuating mechanism that a plurality of action valves that set up on the main control valve correspond the connection, can adjust the gear that matches by oneself under different operating modes, accomplish infinitely variable, do not need the operator to select suitable operation gear according to self experience, greatly reduced electric engineering machine's the operation degree of difficulty.

Secondly, the application provides a gear adjusting method of the electric engineering machinery, which respectively determines whether the load pressure and the pressure of each group of inlet and outlet are increased or decreased relative to the previous moment according to the load pressure and the pressures of a plurality of groups of inlet and outlet, and if the load pressure is increased and at least one group of inlet and outlet pressure is increased, the gear corresponding to the group number of the increased inlet and outlet pressure is determined as a target gear according to the group number of the increased inlet and outlet pressure; if the load pressure and the pressures of the plurality of groups of inlet and outlet are reduced, the preset minimum gear is determined as the target gear, so that the gears can be automatically adjusted according to the collected load pressure and the pressures of the plurality of groups of inlet and outlet, and the operation difficulty of the electric engineering machinery is reduced.

Finally, different groups correspond to different gears, and the larger the group number is, the larger the gear is; if the number of groups of pressure increase of the inlet and the outlet is equal to the number of the action valves, the target gear is a preset maximum gear, so that the target gear of the motor can be accurately and automatically adjusted and determined, the motor can further adjust the hydraulic pressure output to the main control valve by the hydraulic pump according to the characteristics of low speed, large torque and quick response, more hydraulic energy can be provided for the executing mechanisms corresponding to the action valves, the purpose of automatically adjusting matched gears under different working conditions is achieved, and the operation difficulty of the electric engineering machinery is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a gear adjustment system of an electrical engineering machine according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a gear adjustment system of an electric engineering machine according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an electrical engineering machine according to an embodiment of the present disclosure;

fig. 4 is a schematic flowchart of a gear adjusting method of an electrical engineering machine according to an embodiment of the present disclosure;

FIG. 5 is a flowchart illustrating another method for adjusting a gear of an electrical work machine according to an embodiment of the present disclosure;

FIG. 6 is a flowchart illustrating another method for adjusting a gear of an electrical work machine according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a gear adjusting device of an electrical engineering machine according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a gear adjustment device of an electrical engineering machine according to an embodiment of the present disclosure.

Icon: 100-a gear adjusting system of the electric engineering machine; 101-a motor; 102-a hydraulic pump; 103-a first hydraulic pressure sensor; 104-hydraulic pressure sensor two; 105-a main control valve; 106-action valve one; 107-vehicle control unit; 108-a controller; 109-an actuator one; 110-action valve two; 111-action valve three; 112-actuator two; 113-actuator three; 201-load pressure sensor; 300-an electric engineering machine; 801-a processor; 802-memory.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

The application provides a plurality of embodiments to realize the automatic gear adjustment of the electric engineering machinery, and greatly reduces the complexity of the operation of the engineering machinery. This is explained below by means of a number of examples.

Fig. 1 is a schematic structural diagram of a gear adjustment system of an electrical engineering machine according to an embodiment of the present disclosure; as shown in fig. 1, the gear shift position adjustment system 100 of the electric working machine includes: a motor 101, a hydraulic pump 102, a plurality of sets of hydraulic pressure sensors, a main control valve 105, a vehicle control unit 107, and a controller 108.

The motor 101 is connected to the hydraulic pump 102, and the hydraulic pump 102 is connected to the main control valve 105, so that the hydraulic pump 102 can be controlled by the motor 101 to provide hydraulic pressure to the main control valve 105, for example, the motor 101 can be a permanent magnet motor, so that mechanical energy can be provided to the hydraulic pump 102 through the permanent magnet motor, and the mechanical energy is converted into hydraulic energy by the hydraulic pump 102, and the hydraulic energy is distributed to each actuator through the hydraulic system, and finally, the hydraulic energy is converted into mechanical energy by each actuator, thereby realizing various motions of the electric engineering machine.

A main loop of the main control valve 105 is provided with a plurality of action valves, each action valve is connected with an actuating mechanism, and each group of hydraulic pressure sensors are respectively arranged at an oil inlet and an oil outlet of one action valve. For example, the plurality of action valves may be: the hydraulic control system comprises a first action valve 106, a second action valve 110, a third action valve 111 and the like, namely, the actuating mechanisms corresponding to the three action valves are a first actuating mechanism 109, a second actuating mechanism 112 and a third actuating mechanism 113, and a group of hydraulic pressure sensors are respectively arranged at oil inlets and oil outlets of the first action valve 106, the second action valve 110 and the third action valve 111, for example, fig. 1 only shows that a group of hydraulic pressure sensors (a first hydraulic pressure sensor 103 and a second hydraulic pressure sensor 104) are arranged at the oil inlet and the oil outlet of the first action valve 106, and each group of hydraulic pressure sensors correspondingly arranged at the oil inlets and the oil outlets of the remaining second action valve 110 and the third action valve 111 are similar to the above, and are not specifically described herein, so that pressure data of the oil inlets and the oil outlets corresponding to a plurality of action valves can be respectively collected by the plurality of groups of hydraulic pressure sensors.

For example, if the electric construction machine is a pure electric hydraulic excavator, the plurality of operation valves may be: the hydraulic pressure sensors are respectively arranged at the oil inlets and the oil outlets of the action valves, for example, a set of hydraulic pressure sensors can be respectively arranged at the oil inlets and the oil outlets of the rotary valve to acquire the pressure data of the inlet and the outlet of the rotary valve in real time.

The vehicle control unit 107 is electrically connected to the plurality of sets of hydraulic pressure sensors to receive the inlet and outlet pressures of the corresponding action valves collected by each set of hydraulic pressure sensors, that is, after the inlet and outlet pressure data of the corresponding action valves are collected by each set of hydraulic pressure sensors, the collected inlet and outlet pressure data are sent to the vehicle control unit 107.

The vehicle control unit 107 is connected to the controller 108 to send a motor control instruction to the controller 108 according to the inlet/outlet pressures of the corresponding action valves acquired by the multiple sets of hydraulic pressure sensors, for example, after the vehicle control unit 107 receives the inlet/outlet pressure data corresponding to the action valve one 106, the inlet/outlet pressure data may be compared with a preset value, and if the preset condition is not met, an instruction for controlling the rotation speed of the motor 101 may be sent to the controller 108, or an instruction for controlling the operation of the motor 101 to be started or stopped may be sent to the controller 108.

The controller 108 is further connected with the motor 101, the motor 101 is further electrically connected with the hydraulic pump 102, the motor 101 is enabled to output power of preset gears according to motor control instructions received by the controller 108, the motor 101 is controlled to output power of preset gears, the motor 101 is enabled to adjust hydraulic pressure output from the hydraulic pump 102 to the main control valve 105, and therefore a plurality of action valves arranged on the main control valve 105 are enabled to correspond to connected executing mechanisms.

To sum up, the present application provides a gear adjustment system of an electric engineering machine, the gear adjustment system including: the system comprises a motor, a hydraulic pump, a plurality of groups of hydraulic pressure sensors, a main control valve, a vehicle control unit and a controller; the motor is connected with the hydraulic pump, and the hydraulic pump is connected with the main control valve to control the hydraulic pump to provide hydraulic pressure for the main control valve; a main loop of the main control valve is provided with a plurality of action valves, and each action valve is connected with an actuating mechanism; each group of hydraulic pressure sensors are respectively arranged at an oil inlet and an oil outlet of one action valve; the vehicle control unit is electrically connected with a plurality of groups of hydraulic pressure sensors to receive the inlet and outlet pressures of the corresponding action valves collected by each group of hydraulic pressure sensors; the vehicle control unit is connected with the controller so as to send a motor control instruction to the controller according to the inlet and outlet pressure acquired by the plurality of groups of hydraulic pressure sensors; the controller is further connected with a motor, the motor is further connected with a hydraulic pump, so that the motor is controlled to output power of a preset gear according to a motor control instruction, and the motor is enabled to regulate hydraulic pressure output to the main control valve by the hydraulic pump. In the scheme of this application, according to the exit pressure that corresponds the action valve that multiunit hydraulic pressure sensor gathered through vehicle control unit, send the motor control instruction to the controller, and then make the power of the gear preset of control motor output, and make the hydraulic pressure of motor regulation hydraulic pump output to main control valve, realized under different work condition, the automatically regulated of motor gear accomplishes infinitely variable, do not need the operator to select suitable operation gear according to self experience, greatly reduced electric engineering machine's the operation degree of difficulty.

On the basis of the gear shift position adjusting system of the electric engineering machine, as shown above, the embodiment of the present application also provides a possible implementation manner of the gear shift position adjusting system of the electric engineering machine, which is explained by an example as follows. FIG. 2 is a schematic structural diagram of a gear adjustment system of an electric engineering machine according to an embodiment of the present disclosure; as shown in fig. 2, the gear shift position adjustment system 100 of the electric working machine further includes: the load pressure sensor 201.

The load pressure sensor 201 is arranged on the side loop of the main control valve 105, that is, the load pressure of the engineering machinery can be acquired in real time through the arranged load pressure sensor 201, and the load change during the operation of the engineering machinery can be acquired in real time according to the acquired load pressure.

The vehicle control unit 107 is further connected to the load pressure sensor 201 to receive the load pressure collected by the load pressure sensor 201, so that the vehicle control unit 107 can further send a motor control instruction to the controller 108 according to the load pressure and the inlet/outlet pressures collected by the multiple sets of hydraulic pressure sensors after receiving the load pressure, for example, the vehicle control unit 107 compares the load pressure and the inlet/outlet pressures corresponding to the multiple action valves with preset conditions, if the preset conditions are not met, the vehicle control unit 107 can send the motor control instruction to the controller 108, so that the controller 108 can control the motor 101 to output power of a preset gear according to the motor control instruction after receiving the motor control instruction, and further enable the motor 101 to adjust the hydraulic pressure output from the hydraulic pump 102 to the main control valve 105, so that the multiple action valves arranged on the main control valve 105 are correspondingly connected to the actuator, the matched gears can be automatically adjusted under different working conditions, stepless speed change is achieved, an operator does not need to select a proper operation gear according to self experience, and the operation difficulty of the electric engineering machinery is greatly reduced.

Based on the foregoing embodiments, fig. 3 is a schematic structural diagram of an electrical engineering machine according to an embodiment of the present disclosure; as shown in fig. 3, an embodiment of the present application further provides an electric working machine 300, where the electric working machine 300 includes: the above embodiment provides a gear position adjustment system 100 for an electrical engineering machine, and a plurality of actuators, for example, the plurality of actuators may be: the first actuator 109, the second actuator 112, the third actuator 113, and the like, for example, the electric construction machine 300 is a pure electric hydraulic excavator, and the plurality of operation valves may be: the actuators corresponding to the three operating valves are a cab rotation actuator, an arm actuator, and a left travel actuator, respectively.

Each group of hydraulic pressure sensors in the gear adjustment system 100 of the electric engineering machine are respectively arranged at an inlet and an outlet of an actuating valve corresponding to one actuating mechanism, the electric engineering machine 300 can send a motor control instruction to the controller 108 according to the received load pressure and inlet and outlet pressures collected by a plurality of groups of hydraulic pressure sensors through the vehicle control unit 107 in the gear adjustment system 100 of the electric engineering machine provided by the embodiment, and then the motor is controlled by the controller 108 to output power of preset gears according to the motor control instruction, so that the motor 101 adjusts hydraulic pressure output from a hydraulic pump to the main control valve 105, and thus gears of actuating mechanisms correspondingly connected with the plurality of actuating valves arranged on the main control valve 105 can be adjusted, stepless speed change is achieved, and the operation difficulty of the electric engineering machine is greatly reduced.

On the basis of the gear shift adjusting system of the electric engineering machine, the embodiment of the present application may further provide an implementation example of a control method of a vehicle control unit applied to the gear shift adjusting system of the electric engineering machine, which is exemplified as follows. Fig. 4 is a schematic flowchart of a gear adjusting method of an electrical engineering machine according to an embodiment of the present disclosure; the method is applied to a vehicle control unit in the gear adjusting system of the electric engineering machine provided by the embodiment, and comprises the following steps:

s401, acquiring multiple groups of inlet and outlet pressures of corresponding action valves acquired by multiple groups of hydraulic pressure sensors.

Specifically, a plurality of sets of inlet and outlet pressures of corresponding action valves acquired by a plurality of sets of hydraulic pressure sensors are acquired in real time through the vehicle control unit, for example, if one action valve is a rotary valve, a set of inlet and outlet pressure data can be acquired in real time through a set of hydraulic sensors arranged at an oil inlet and an oil outlet of the rotary valve, and then the acquired set of inlet and outlet pressure data is sent to the vehicle control unit.

S402, determining a target gear of the motor according to the multiple groups of inlet and outlet pressures.

In some embodiments, for example, after the vehicle control unit obtains multiple sets of inlet/outlet pressures of corresponding action valves collected by multiple sets of hydraulic pressure sensors, and further determines the target gear of the motor according to the multiple sets of inlet/outlet pressures, for example, the target gear of the motor may be determined as a result of comparing multiple sets of inlet/outlet pressure data with preset conditions.

And S403, outputting a motor control instruction corresponding to the target gear to the controller, so that the controller controls the motor to output power of a preset gear according to the motor control instruction corresponding to the target gear, and the motor regulates the hydraulic pressure output to the main control valve by the hydraulic pump.

In some embodiments, for example, after determining that the target gear of the motor is a certain gear according to multiple sets of inlet and outlet pressures, outputting a motor control command corresponding to the target gear to the controller to control the motor to output power matched with the target gear according to the motor control command, so that electric energy can be converted into mechanical energy by the motor with power of a preset gear, hydraulic pressure can be output to the main control valve by driving the hydraulic pump through the mechanical energy, hydraulic energy is distributed to the actuators correspondingly connected to the action valves arranged on the main control valve through the hydraulic system, and finally, hydraulic energy is converted into mechanical energy by the actuators, thereby realizing various motions of the electric engineering machine.

In summary, the present application provides a gear adjustment method for an electric engineering machine, which is applied to a vehicle control unit in a gear adjustment system for an electric engineering machine provided in the foregoing embodiment, and the method includes: acquiring a plurality of groups of inlet and outlet pressures of corresponding action valves acquired by a plurality of groups of hydraulic pressure sensors; then, determining a target gear of the motor according to the multiple groups of inlet and outlet pressures; and outputting a motor control instruction corresponding to the target gear to the controller, so that the controller controls the motor to output the power of the preset gear according to the motor control instruction corresponding to the target gear, and the motor regulates the hydraulic pressure output to the main control valve by the hydraulic pump. In the method, a plurality of groups of inlet and outlet pressures of corresponding action valves acquired by a plurality of groups of hydraulic pressure sensors are acquired; and finally, converting the hydraulic energy into mechanical energy by each executing mechanism to realize various motions of the electric engineering machinery, thus being capable of automatically adjusting matched gears according to the pressures of the plurality of groups of inlets and outlets of the corresponding action valves, realizing stepless speed change and greatly reducing the operation difficulty of the electric engineering machinery.

FIG. 5 is a flowchart illustrating another method for adjusting a gear of an electrical work machine according to an embodiment of the present disclosure; as shown in fig. 5, on the basis of the above embodiment, the method further includes:

s501, acquiring the load pressure acquired by the load pressure sensor.

In some embodiments, for example, after acquiring a plurality of sets of inlet and outlet pressures of corresponding action valves acquired by a plurality of sets of hydraulic pressure sensors, load pressures acquired by load pressure sensors may also be acquired, wherein the load pressure sensors are disposed on a side loop of the main control valve and are used for acquiring load pressure data for operating the electrical engineering machine in real time and transmitting the acquired load pressures to the vehicle control unit.

Accordingly, the step S402: according to the pressure of the multiple groups of inlet and outlet, determining a target gear of the motor specifically comprises the following steps:

and S502, determining a target gear of the motor according to the load pressure and the pressure of the plurality of groups of inlet and outlet.

In some embodiments, for example, after acquiring the load pressure and the multiple sets of inlet and outlet pressures acquired by the load pressure sensor, the vehicle control unit can determine the target gear of the motor more accurately according to the load pressure and the multiple sets of inlet and outlet pressures at the same time, thereby effectively reducing the operation difficulty of the electric engineering machine.

FIG. 6 is a flowchart illustrating another method for adjusting a gear of an electrical work machine according to an embodiment of the present disclosure; alternatively, as shown in fig. 6, the step S502: according to load pressure and the pressure of a plurality of groups of inlets and outlets, a target gear of the motor is determined, and the method specifically comprises the following steps:

and S601, respectively determining whether the load pressure and the inlet/outlet pressure of each group are increased or decreased relative to the previous moment.

In some embodiments, for example, after acquiring multiple sets of inlet and outlet pressures of corresponding action valves acquired by multiple sets of hydraulic pressure sensors, it may be determined whether the load pressure and each set of inlet and outlet pressures are increased or decreased relative to the previous time, respectively, to determine the change of the load pressure and each set of inlet and outlet pressures acquired in real time.

For example, the change of the handle of the electric engineering machinery operated by the driver can be further determined according to the change condition of the pressure of each group of inlet and outlet, for example, when the collected pressure of each group of inlet and outlet is reduced relative to the previous moment, the driver can be determined to do the stopping operation action by releasing the handle, and the hydraulic pressure output by the hydraulic pump is reduced.

S602, if the load pressure is increased and at least one group of inlet and outlet pressure is increased, determining the gear corresponding to the group number of the inlet and outlet pressure increase as a target gear according to the group number of the inlet and outlet pressure increase.

In some embodiments, for example, when it is determined that the load pressure is increased with respect to the previous time, and there is at least one group of inlet/outlet pressures that are increased, that is, the hydraulic pump is required to increase the output hydraulic pressure to provide more hydraulic energy to the actuators corresponding to the multiple operating valves, for example, six groups of inlet/outlet pressure data corresponding to six operating valves are collected, it is determined that the inlet/outlet pressure of only one group corresponding to one of the operating valves is increased, and the inlet/outlet pressures of five groups corresponding to the other five operating valves are decreased, and then according to that the number of groups of inlet/outlet increases is one, the gear corresponding to the number of groups of inlet/outlet pressures that are increased may be determined as the target gear.

For another example, if it is determined that the inlet/outlet pressures of three groups corresponding to three of the operating valves are increased and the inlet/outlet pressures of three groups corresponding to the other three operating valves are decreased, the gear corresponding to the group number of the three groups with the increased inlet/outlet pressures may be determined as the target gear according to the fact that the group number with the increased inlet/outlet is three groups.

Optionally, with continued reference to fig. 6, the step S502: according to load pressure and the pressure of multiunit import and export, confirm the target gear of motor, still include:

and S603, if the load pressure and the pressure of the plurality of groups of inlet and outlet are reduced, determining the preset minimum gear as a target gear.

In some embodiments, for example, when it is determined that the load pressure and the pressures of the plurality of sets of inlet and outlet ports are both reduced relative to the previous time, that is, the hydraulic pressure output by the hydraulic pump is reduced, the preset minimum gear can be determined as the target gear, so that the gear can be automatically adjusted according to the acquired load pressure and the pressures of the plurality of sets of inlet and outlet ports, and the operation difficulty of the electric engineering machine is reduced.

In some embodiments, for example, the plurality of sets of inlet/outlet pressures acquired by the plurality of sets of hydraulic pressure sensors of the plurality of actuation valves, for example, the first set of inlet/outlet pressures acquired by the first set of hydraulic pressure sensors of the rotary valve, the second set of inlet/outlet pressures acquired by the second set of hydraulic pressure sensors of the arm valve, the third set of inlet/outlet pressures acquired by the third set of hydraulic pressure sensors of the arm valve, and the like, and the first set of inlet/outlet pressures, the second set of inlet/outlet pressures, and the third set of inlet/outlet pressures correspond to different gears, respectively, and when the number of sets of increased inlet/outlet pressures among the three sets of inlet/outlet pressures is greater, the corresponding target gear is greater, and if the number of sets of increased inlet/outlet pressures is equal to the number of the plurality of actuation valves, the target gear is the preset maximum gear, so that different gears can be corresponding according to different sets, and the number of sets of increased inlet/outlet pressures is equal to the number of actuation valves, the target gear of the motor can be accurately and automatically adjusted and determined, the motor can further adjust the hydraulic pressure output to the main control valve by the hydraulic pump according to the characteristics of low speed, large torque and quick response, and accordingly more hydraulic energy can be provided for the actuating mechanisms corresponding to the action valves.

The following describes a device, equipment, a storage medium, and the like for executing the gear adjustment method of the electric engineering machine provided by the present application, and specific implementation processes and technical effects thereof are referred to above, and are not described again below.

Fig. 7 is a schematic structural diagram of a gear adjusting device of an electrical engineering machine according to an embodiment of the present disclosure; as shown in fig. 7, a gear shift position adjusting apparatus 700 of an electric working machine, which is applied to a vehicle control unit in a gear shift position adjusting system provided in an embodiment of the first aspect, includes: an obtaining module 701, a determining module 702 and an outputting module 703.

The acquiring module 701 is used for acquiring a plurality of groups of inlet and outlet pressures of corresponding action valves acquired by a plurality of groups of hydraulic pressure sensors;

a determining module 702, configured to determine a target gear of the motor according to multiple sets of inlet/outlet pressures;

the output module 703 is configured to output a motor control instruction corresponding to the target gear to the controller, so that the controller controls the motor to output power of a preset gear according to the motor control instruction corresponding to the target gear, and the motor adjusts hydraulic pressure output by the hydraulic pump to the main control valve.

Optionally, the obtaining module 701 is further configured to obtain a load pressure collected by a load pressure sensor;

a determining module 702, further configured to:

Optionally, the determining module 702 is further specifically configured to:

respectively determining whether the load pressure and the pressure of each group of inlet and outlet are increased or decreased relative to the previous moment;

Optionally, the determining module 702 is further specifically configured to:

and if the load pressure and the pressures of the plurality of groups of inlet and outlet are reduced, determining the preset minimum gear as the target gear.

The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Fig. 8 is a schematic structural diagram of a gear adjusting device of an electrical engineering machine according to an embodiment of the present disclosure, where the gear adjusting device may be integrated in a control device or a chip of the control device.

The gear adjusting apparatus includes: a processor 801 and a memory 802.

The memory 802 is used for storing programs, and the processor 801 calls the programs stored in the memory 802 to execute the above-mentioned method embodiments. The specific implementation and technical effects are similar, and are not described herein again.

Optionally, the invention also provides a program product, for example a computer-readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A gear shift position adjustment system for an electrical construction machine, comprising: the system comprises a motor, a hydraulic pump, a plurality of groups of hydraulic pressure sensors, a main control valve, a vehicle control unit and a controller;

the controller is further connected with the motor, and the motor is further connected with a hydraulic pump so as to control the motor to output power of a preset gear according to the motor control instruction, so that the motor adjusts the hydraulic pressure output from the hydraulic pump to the main control valve;

the load pressure sensor is arranged on a side loop of the main control valve, the vehicle control unit is further connected with the load pressure sensor to receive the load pressure collected by the load pressure sensor, and the controller is sent out a motor control instruction according to the load pressure and the inlet and outlet pressures collected by the multiple groups of hydraulic pressure sensors.

2. An electrical working machine, comprising: the gear shift position adjusting system according to claim 1, and a plurality of actuators, wherein each set of hydraulic pressure sensors in the gear shift position adjusting system is respectively disposed at an inlet and an outlet of an actuating valve corresponding to one actuator.

3. A gear shift position adjusting method for an electric working machine, applied to a vehicle control unit in the gear shift position adjusting system of claim 1, the method comprising:

acquiring a plurality of groups of inlet and outlet pressures of the corresponding action valves acquired by the plurality of groups of hydraulic pressure sensors;

4. The method of claim 3, further comprising:

acquiring the load pressure acquired by the load pressure sensor;

5. The method of claim 4, wherein determining the target gear of the electric machine based on the load pressure and the plurality of sets of inlet-outlet pressures comprises:

6. The method of claim 5, wherein determining the target gear of the electric machine based on the load pressure and the plurality of sets of inlet-outlet pressures further comprises:

7. The method of claim 5, wherein different sets correspond to different gears, the larger the set, the larger the gears; and if the number of the groups of the inlet and outlet pressure increase is equal to the number of the action valves, the target gear is a preset maximum gear.

8. A shift position adjusting apparatus for an electric working machine, applied to a vehicle control unit in the shift position adjusting system according to claim 1, comprising: the device comprises an acquisition module, a determination module and an output module;

9. A gear shift position adjustment device of an electric working machine, comprising: a memory storing a computer program executable by the processor, and a processor for executing the method of adjusting a gear of an electric working machine according to any one of claims 3-7.