CN112441025A - Single-rail transport vehicle for extended-range hillside orchard - Google Patents
Single-rail transport vehicle for extended-range hillside orchard Download PDFInfo
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- CN112441025A CN112441025A CN202011186646.5A CN202011186646A CN112441025A CN 112441025 A CN112441025 A CN 112441025A CN 202011186646 A CN202011186646 A CN 202011186646A CN 112441025 A CN112441025 A CN 112441025A
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- alternating current
- transport vehicle
- lithium battery
- converter
- current generator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/04—Monorail systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/12—Control gear; Arrangements for controlling locomotives from remote points in the train or when operating in multiple units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
- B61C3/02—Electric locomotives or railcars with electric accumulators
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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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The invention relates to a range-extending hillside orchard monorail transport vehicle, which is characterized in that: it comprises a transmission system; the driving system is used for driving the transmission system and comprises an alternating current motor; the energy conversion system comprises a frequency converter, an alternating current generator, a lithium battery and a bidirectional DC/DC converter, wherein a single-phase input port of the frequency converter is connected with the alternating current generator, a three-phase output port of the frequency converter is connected with the alternating current motor, a direct current port of the frequency converter is connected with a high-side end of the bidirectional DC/DC converter, and a low-side end of the bidirectional DC/DC converter is connected with the lithium battery; and the control system comprises a PLC/HMI all-in-one machine and a tilt angle sensor, wherein an RS485 communication port of the PLC/HMI all-in-one machine is respectively communicated with the frequency converter, the bidirectional DC/DC converter, the lithium battery, the alternating current motor, the alternating current generator and the tilt angle sensor. The invention can realize the switching between the pure electric mode and the hybrid power mode, is convenient to use and can be suitable for hillside orchards.
Description
Technical Field
The invention relates to the field of agricultural transportation machinery, in particular to a single-rail transport vehicle for an extended-range hillside orchard.
Background
Fruits and tea are main economic crops in southern areas of China, and are various on mountains in hilly and mountainous areas, and due to large topographic relief, a perfect transportation network is difficult to form, so that transportation operation becomes one of the links with the greatest labor intensity in agricultural production in hilly and mountainous areas, the competitiveness of agricultural industry in hilly and mountainous areas is seriously affected, and agricultural transportation mechanization is urgently needed to be realized. At present, new energy tends to be great, but the traditional pure storage battery driving method is bound to encounter the problem of endurance anxiety. And single power supply long-term operation, battery energy is not enough, even there is new battery to supply, need to fill electric pile or charging station, and under current charging technology, charge time is long, still needs peripheral hardware charging device, constantly changes the battery package, and the interface that leads to damages and the reduction of operating time, and the midway is not electrified, still needs the personnel of comparatively specialty to go to the fault point to change the battery, needs the relevant equipment of comparatively professional looking after. While orchards are generally in hilly areas, many orchards fail to be standardized for orchard establishment, and most orchards fail to be powered on. Charging is inconvenient, and great inconvenience is brought to farmers in harvest seasons and emergency situations when the farmers cannot use the batteries. The cost is inevitably increased by simply increasing the capacity of the lithium battery.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an extended-range hillside orchard monorail transport vehicle which can realize the switching between a pure electric mode and a hybrid power mode, is convenient to use and can be suitable for hillside orchards.
In order to solve the technical problems, the technical scheme of the invention is as follows: a single-rail transport vehicle for an extended-range hillside orchard is characterized in that:
it comprises a transmission system;
the driving system is used for driving the transmission system and comprises an alternating current motor;
the energy conversion system comprises a frequency converter, an alternating current generator, a lithium battery and a bidirectional DC/DC converter, wherein a single-phase input port of the frequency converter is connected with the alternating current generator, a three-phase output port of the frequency converter is connected with the alternating current motor, a direct current port of the frequency converter is connected with a high-side end of the bidirectional DC/DC converter, and a low-side end of the bidirectional DC/DC converter is connected with the lithium battery;
and
the control system comprises a PLC/HMI all-in-one machine and a tilt angle sensor, wherein an RS485 communication port of the PLC/HMI all-in-one machine is respectively communicated with the frequency converter, the bidirectional DC/DC converter, the lithium battery, the alternating current motor, the alternating current generator and the tilt angle sensor;
the PLC/HMI all-in-one machine is specifically used for:
judging whether the residual electric quantity of the lithium battery is less than thirty percent;
if so, controlling the alternating current generator to start, and changing the power supply mode of the energy conversion system into a hybrid power mode;
if not, communicating with an inclination angle sensor, and judging the working state of the transport vehicle; if the transport vehicle is in an uphill state, controlling the alternating current generator to start, and enabling a power supply mode of the energy conversion system to be changed into a hybrid power mode; if the transport vehicle is in a flat ground state, controlling the alternating current generator to stop, and enabling the power supply mode of the energy conversion system to be changed into a pure electric mode; and if the transport vehicle is in a downhill state, controlling the alternating current generator to stop, changing the power supply mode of the energy conversion system into a pure electric mode, and transmitting and storing the electric energy converted from the potential energy of the transport vehicle into the lithium battery through the bidirectional DC/DC converter.
According to the technical scheme, the driving system further comprises a reduction gearbox and a driving wheel, the alternating current motor, the reduction gearbox and the driving wheel are sequentially connected, and the driving wheel is matched with the transmission system.
According to the technical scheme, the input shaft of the reduction gearbox is connected with the output shaft of the alternating current motor through the belt pulley assembly, and the output shaft of the reduction gearbox is connected with the wheel shaft of the driving wheel.
According to the technical scheme, the transmission system comprises a rail, a transportation frame, a trailer and a driven wheel, the driving wheel and the driven wheel are arranged at the bottom of the transportation frame and can roll along the length direction of the rail, and the trailer is fixed on the transportation frame.
According to the technical scheme, the transmission system further comprises clamping wheels, wherein the clamping wheels are symmetrically arranged at the bottom of the transportation frame and are matched with each other to limit the track between the two clamping wheels.
According to the technical scheme, the energy conversion system further comprises an AC-DC24V power supply, a 72V-24VDC/DC isolation power supply and an external charger, the AC-DC24V power supply is connected with the alternating current generator, and the 72V-24VDC/DC isolation power supply and the external charger are respectively connected with the lithium battery.
According to the technical scheme, the control system further comprises a temperature sensor, and the temperature sensor is communicated with an RS485 communication port of the PLC/HMI all-in-one machine.
Compared with the prior art, the invention has the beneficial characteristics that: according to the range-extended hillside orchard single-rail transport vehicle, the inclination angle sensor senses the working state of the current transport vehicle and sends the current working state to the PLC/HMI all-in-one machine, the PLC/HMI all-in-one machine communicates with the lithium battery to know the residual electric quantity of the lithium battery, and the PLC/HMI all-in-one machine controls the power supply mode to switch between the pure electric mode and the hybrid power mode according to the current working state of the transport vehicle and the residual electric quantity of the lithium battery, namely whether the alternating-current generator needs to be started or not; and when the transport vehicle is in a downhill state, the torque of the alternating current motor is a resistance torque, potential energy change of the transport vehicle in the downhill process can be converted into electric energy through four-quadrant motion of the alternating current motor and stored in the lithium battery, and the transport vehicle can be effectively suitable for hillside orchards.
Drawings
FIG. 1 is an energy flow diagram of an extended-range hillside orchard monorail transport vehicle according to an embodiment of the invention;
FIG. 2 is an electrical topological diagram of the extended-range hillside orchard monorail transport vehicle according to the embodiment of the invention;
FIG. 3 is a flow chart of a power supply mode switching process of the extended-range hillside orchard single-rail transport vehicle according to the embodiment of the invention;
FIG. 4 is a schematic perspective view of an extended-range hillside orchard monorail transport vehicle according to an embodiment of the invention;
FIG. 5 is a schematic view of a portion of the structure of FIG. 4;
FIG. 6 is a schematic perspective view of an extended-range hillside orchard monorail transport vehicle according to an embodiment of the invention;
FIG. 7 is a schematic structural view of an extended-range hillside orchard monorail transport vehicle according to an embodiment of the invention;
wherein: the system comprises an alternating current motor 1, a reduction gearbox 2, a driving wheel 3, an alternating current generator 4, a lithium battery 5, a rail 6, a transport vehicle frame 7, a trailer 8, a driven wheel 9, a clamping wheel 10, a control cabinet 11, a PLC/HMI all-in-one machine 12 and a belt pulley assembly 13.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
Referring to fig. 1 to 7, an extended-range hillside orchard monorail transport vehicle according to an embodiment of the present invention includes a transmission system, a driving system, an energy conversion system and a control system.
Referring to fig. 5, the drive system is used to drive the transmission system. The driving system comprises an alternating current motor 1, a reduction box 2 and a driving wheel 3 which are connected in sequence, and the driving wheel 3 is matched with the transmission system.
Referring to fig. 1 and 2, the energy conversion system is responsible for rectification, voltage boosting/reducing, and inversion, and transmits energy from the lithium battery 5 and the ac generator 4 to the ac motor 1, and transmits and stores electric energy converted from potential energy of the transportation vehicle to the lithium battery 5. The energy conversion system comprises a frequency converter, an alternating current generator 4, a lithium battery 5 and a bidirectional DC/DC converter, wherein a single-phase input port of the frequency converter is connected with the alternating current generator 4, a three-phase output port of the frequency converter is connected with the alternating current motor 1, a direct current port of the frequency converter is connected with a high-side end of the bidirectional DC/DC converter, a low-side end of the bidirectional DC/DC converter is connected with the lithium battery 5, the lithium battery 5 can be used for independently supplying power to the alternating current motor 1 or the lithium battery 5 and the alternating current generator 4 can be used for simultaneously supplying power to the alternating current motor 1, and electric energy converted from potential energy of a transport vehicle can be transmitted. Referring to fig. 1, the frequency converter is used for controlling the rotation speed and the torque of the ac motor 1, and the control signal received from the PLC/HMI integrated machine 12 can be used for controlling the ac motor 1 by changing parameters such as frequency and voltage. Referring to fig. 1, in the process of supplying power to the transportation vehicle, the bidirectional DC/DC converter is used to transmit the electric energy of the lithium battery 5 to the DC side of the frequency converter; in the energy recovery process, the bidirectional DC/DC converter is used for transmitting the electric energy of the lithium battery 5 to the direct current side of the frequency converter and transmitting the electric energy converted from the potential energy to the lithium battery 5 for storage.
Referring to fig. 2, the control system includes a PLC/HMI integrated machine 12, a remote control receiving module, and a tilt sensor, wherein a transistor output port of the PLC/HMI integrated machine 12 is connected to the remote control receiving module, and an RS485 communication port of the PLC/HMI integrated machine 12 communicates with the frequency converter, the bidirectional DC/DC converter, the lithium battery 5, the ac motor 1, the ac generator 4, and the tilt sensor, respectively, to collect, transmit, and send control signals.
The remote control receiving module is used for receiving instructions from a remote controller. The inclination angle sensor is used for sensing the working state of the transport vehicle, and the working state of the transport vehicle is divided into an uphill state, a flat ground state and a downhill state.
Referring to fig. 2, in the embodiment of the present invention, a PLC/HMI integrated machine 12 is used as a main controller, and the PLC/HMI integrated machine 12 has two RS485 communication ports, a D0 transistor output port, and a standby transistor output port. The RS485 communication port 1 is communicated with the alternating current generator 4, the alternating current motor 1, the frequency converter and the bidirectional DC/DC converter through a modbus protocol, so that the control and parameter monitoring of the four devices are realized; and the RS485 communication port 2 is communicated with the lithium battery 5, the temperature sensor and the inclination angle sensor through a modbus protocol to monitor the state of the whole vehicle.
Referring to fig. 2, the PLC/HMI integrated machine 12 can communicate with the tilt angle sensor and the lithium battery 5, respectively, the PLC/HMI integrated machine 12 obtains the operating state of the transportation vehicle through communicating with the tilt angle sensor, the PLC/HMI integrated machine 12 obtains the remaining power of the lithium battery 5 through communicating with the lithium battery 5, thereby determining whether the ac generator 4 is turned on and adjusting the frequency converter, controlling the frequency, thereby controlling the rotation speed and the torque of the ac motor 1, and finally controlling the power supply mode of the energy conversion system to switch between the pure electric mode and the hybrid power mode. And the PLC/HMI all-in-one machine 12 can also convert the potential energy of the transport vehicle into the electric energy of the lithium battery 5 by controlling the bidirectional DC/DC converter, as shown in figure 1.
Referring to fig. 3, in the power supply mode switching process, the PLC/HMI integrated machine 12 is specifically configured to:
judging whether the residual electric quantity of the lithium battery 5 is less than thirty percent;
if so, controlling the alternating current generator 4 to start, enabling the lithium battery 5 and the alternating current generator 4 to supply power simultaneously, and enabling the power supply mode of the energy conversion system to be changed into a hybrid power mode;
if not, communicating with the tilt angle sensor to judge the working state of the transport vehicle; if the transport vehicle is in an uphill state, controlling the alternating current generator 4 to start, enabling the lithium battery 5 and the alternating current generator 4 to supply power simultaneously, and enabling the power supply mode of the energy conversion system to be changed into a hybrid power mode; if the transport vehicle is in a flat ground state, controlling the alternating current generator 4 to stop, and only the lithium battery 5 to supply power, so that the power supply mode of the energy conversion system is changed into a pure electric mode; if the transport vehicle is in a downhill state, the alternating current generator 4 is controlled to stop, only the lithium battery 5 supplies power, the power supply mode of the energy conversion system is changed into a pure electric mode, the voltage and the frequency of the alternating current motor 1 are controlled through the frequency converter, the torque of the alternating current motor 1 is resistance torque in the downhill state, potential energy is converted into electric energy under the action of gravity, and the electric energy converted from the potential energy is transmitted to the lithium battery 5 through the bidirectional DC/DC converter to be stored.
Specifically, referring to fig. 4 to 7, the input shaft of the reduction gearbox 2 is connected with the output shaft of the ac motor 1 through the pulley assembly 13, and the output shaft of the reduction gearbox 2 is connected with the wheel shaft of the driving wheel 3. Specifically, the transmission system comprises a rail 6, a transportation frame 7, a trailer 8 and a driven wheel 9, wherein the driving wheel 3 and the driven wheel 9 are fixedly arranged at the bottom of the transportation frame 7, the driving wheel 3 and the driven wheel 9 can roll along the length direction of the rail 6 so as to drive the transportation frame 7 to move, and the trailer 8 is fixed on the transportation frame 7 and used for loading and transporting fruits. The transmission system further comprises clamping wheels 10, and the clamping wheels 10 are symmetrically arranged at the bottom of the transportation frame 7 and are matched with each other to limit the track 6 between the two clamping wheels 10.
Preferably, the energy conversion system further comprises an AC-DC24V power supply, a 72V-24VDC/DC isolation power supply and an external charger, the AC-DC24V power supply is connected with the alternating current generator 4, and the 72V-24VDC/DC isolation power supply and the external charger are respectively connected with the lithium battery 5 to supply power to the PLC/HMI all-in-one machine 12 and the sensor.
Preferably, in order to monitor the temperature of the control cabinet 11 in real time, the control system further comprises a temperature sensor, and the temperature sensor is in communication with an RS485 communication port of the PLC/HMI all-in-one machine 12.
Specifically, the control system further includes a relay and a contactor connected to the transistor output port of the PLC/HMI all-in-one machine 12.
Referring to fig. 4 to 7, the transport vehicle further includes a control cabinet 11, the control system further includes a brake resistor electrically connected to the frequency converter, the control cabinet 11, the AC motor 1, the AC generator 4, and the lithium battery 5 are respectively fixed to the transport vehicle frame 7, the PLC/HMI all-in-one machine 12 is embedded in the control cabinet 11, the bidirectional DC/DC converter, the 72v-24vDC/DC isolation power supply, the AC-DC24V power supply, the frequency converter, the remote control receiving module, the relay, the brake resistor, the contactor, the tilt angle sensor, and the temperature sensor are installed in the control cabinet 11.
In the embodiment of the invention, when the transport vehicle is in an uphill state, the alternating current generator 4 is started, and the alternating current generator 4 and the lithium battery 5 work simultaneously. When the transport vehicle is in a flat ground state, the alternating current generator 4 is not started, and only the lithium battery 5 is used for supplying power. When the transport vehicle is in a downhill state, the alternating current generator 4 is not started, the lithium battery 5 is used for supplying power independently, the torque of the alternating current motor 1 is a resistance torque, potential energy is converted into electric energy in the downhill process and stored in the lithium battery 5, the characteristic of a mountain land is effectively utilized, and the terrain disadvantage of a hillside orchard is changed into an advantage. And when the PLC/HMI detects that the residual electric quantity of the lithium battery 5 is less than thirty percent, the alternating current generator 4 is started no matter what working state the transport vehicle is in, and at the moment, the power is supplied together with the lithium battery 5, and redundant electric energy is stored in the lithium battery 5.
The above description is provided for the purpose of describing the present invention in more detail, and it should not be construed that the present invention is limited to the description, and it will be apparent to those skilled in the art that various modifications and substitutions can be made without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides an increase form hillside orchard monorail transport vechicle which characterized in that:
it comprises a transmission system;
the driving system is used for driving the transmission system and comprises an alternating current motor;
the energy conversion system comprises a frequency converter, an alternating current generator, a lithium battery and a bidirectional DC/DC converter, wherein a single-phase input port of the frequency converter is connected with the alternating current generator, a three-phase output port of the frequency converter is connected with the alternating current motor, a direct current port of the frequency converter is connected with a high-side end of the bidirectional DC/DC converter, and a low-side end of the bidirectional DC/DC converter is connected with the lithium battery;
and
the control system comprises a PLC/HMI all-in-one machine and a tilt angle sensor, wherein an RS485 communication port of the PLC/HMI all-in-one machine is respectively communicated with the frequency converter, the bidirectional DC/DC converter, the lithium battery, the alternating current motor, the alternating current generator and the tilt angle sensor;
the PLC/HMI all-in-one machine is specifically used for:
judging whether the residual electric quantity of the lithium battery is less than thirty percent;
if so, controlling the alternating current generator to start, and changing the power supply mode of the energy conversion system into a hybrid power mode;
if not, communicating with an inclination angle sensor, and judging the working state of the transport vehicle; if the transport vehicle is in an uphill state, controlling the alternating current generator to start, and enabling a power supply mode of the energy conversion system to be changed into a hybrid power mode; if the transport vehicle is in a flat ground state, controlling the alternating current generator to stop, and enabling the power supply mode of the energy conversion system to be changed into a pure electric mode; and if the transport vehicle is in a downhill state, controlling the alternating current generator to stop, changing the power supply mode of the energy conversion system into a pure electric mode, and transmitting and storing the electric energy converted from the potential energy of the transport vehicle into the lithium battery through the bidirectional DC/DC converter.
2. The extended-range hillside orchard monorail transport vehicle of claim 1, wherein: the driving system further comprises a reduction gearbox and a driving wheel, the alternating current motor, the reduction gearbox and the driving wheel are sequentially connected, and the driving wheel is matched with the transmission system.
3. The extended-range hillside orchard monorail transport vehicle of claim 2, wherein: the input shaft of the reduction gearbox is connected with the output shaft of the alternating current motor through a belt pulley assembly, and the output shaft of the reduction gearbox is connected with the wheel shaft of the driving wheel.
4. The extended-range hillside orchard monorail transport vehicle of claim 2, wherein: the transmission system comprises a rail, a transportation frame, a trailer and a driven wheel, the driving wheel and the driven wheel are arranged at the bottom of the transportation frame and can roll along the length direction of the rail, and the trailer is fixed on the transportation frame.
5. The extended-range hillside orchard monorail transport vehicle of claim 4, wherein: the transmission system further comprises clamping wheels, and the clamping wheels are symmetrically arranged at the bottom of the transportation frame and are matched with each other to limit the track between the two clamping wheels.
6. The extended-range hillside orchard monorail transport vehicle of claim 1, wherein: the energy conversion system further comprises an AC-DC24V power supply, a 72V-24VDC/DC isolation power supply and an external charger, wherein the AC-DC24V power supply is connected with the alternating current generator, and the 72V-24VDC/DC isolation power supply and the external charger are respectively connected with the lithium battery.
7. The extended-range hillside orchard monorail transport vehicle of claim 1, wherein: the control system further comprises a temperature sensor, and the temperature sensor is communicated with an RS485 communication port of the PLC/HMI all-in-one machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011186646.5A CN112441025A (en) | 2020-10-30 | 2020-10-30 | Single-rail transport vehicle for extended-range hillside orchard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011186646.5A CN112441025A (en) | 2020-10-30 | 2020-10-30 | Single-rail transport vehicle for extended-range hillside orchard |
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| CN112441025A true CN112441025A (en) | 2021-03-05 |
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| CN202011186646.5A Pending CN112441025A (en) | 2020-10-30 | 2020-10-30 | Single-rail transport vehicle for extended-range hillside orchard |
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2020
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