JP2000289473A - Hybrid agricultural carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the supplying of electric energy during the driving of an electric motor by driving a generator to execute the charging of a battery only during the driving of an internal combustion engine in a hybrid agricultural carrier. SOLUTION: A selection switch 31 for switching to drive one of an internal combustion engine 9 and an electric motor 10 and a controller 30 are provided, and when the internal combustion engine 9 is selected to be driven, a generator 12 is driven for charging, and control is executed to cut off a second transmission clutch 24 for transmitting a motive force to a traveling part from the electric motor 19 side and, when the electric motor 10 is selected to be driven, control is executed to cut off a first transmission clutch 15 for transmitting a motive force to the traveling part from the internal combustion engine 9 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction of a transporting machine for traveling agricultural work, and more particularly, to two types of traveling power sources, an internal combustion engine and an electric motor, wherein the traveling power source is set according to a traveling mode. The present invention relates to a configuration of a hybrid agricultural work transporter that can be selected.

[0002]

2. Description of the Related Art In recent years, passenger cars and the like are provided with two types of running power sources, an internal combustion engine and an electric motor, so as not to deteriorate the global environment. A hybrid vehicle configured to drive an electric motor with electric power from the storage battery in a limited low-pollution designated area such as the vicinity of a hospital or a school while charging the storage battery via the storage battery has been developed.

[0003]

However, a hybrid vehicle as described above has not been developed as a transporter for agricultural work, and only a traveling power source of either an internal combustion engine or an electric motor is mounted. . In the agricultural work in the field, the running speed is slow, and the running and stopping are repeated, and the stopping time is relatively long.
There is a problem that idling time is long and fuel efficiency is poor due to repeated start / stop.On the other hand, electric motors are not good at high-speed running such as when traveling on the road, and it takes time to charge the storage battery. In addition, there is a problem in that the battery needs to be charged separately from a power line, and preparation is time-consuming.

[0004] It is an object of the present invention to provide a hybrid agricultural work carrier that solves the above-mentioned conventional problems.

[0005]

According to one aspect of the present invention, there is provided a transporter for hybrid agricultural work according to the present invention, comprising: an internal combustion engine; an electric motor; a generator; A hybrid agricultural transporter having a power transmission unit and a transmission, comprising a selection switch and a controller for switching to drive either the internal combustion engine or the electric motor, and selecting to drive the internal combustion engine. When the electric motor is selected to drive, the generator is charged and the second transmission clutch for transmitting power from the electric motor to the traveling unit is disengaged. When the electric motor is selected to be driven, the internal combustion engine The first transmission clutch that transmits power from the side to the traveling unit is controlled to be disengaged.

According to a second aspect of the present invention, there is provided a hybrid agricultural work transporter including an internal combustion engine, a generator, an electric motor, a storage battery, a power transmission unit to a traveling unit, and a transmission. A transport machine, comprising: a selection switch and a controller for switching one of the internal combustion engine and the electric motor to drive the power source; and the power source transmitting power from the internal combustion engine and the electric motor to the transmission. Constructing a transmission unit, the power transmission unit is provided with a transmission clutch that can disconnect the power transmission from the internal combustion engine side, when the electric motor is selected to drive, the transmission clutch is disengaged, When it is selected to drive the internal combustion engine, the transmission clutch is engaged, and at least the generator is driven to charge. It is intended to control to so that.

[0007]

Next, embodiments of the present invention will be described.

FIG. 1 is a perspective view of a four-wheeled type hybrid agricultural transporter 1 embodying the present invention, and FIG. 2 is a functional block diagram of the first embodiment. The hybrid agricultural transport machine 1 includes left and right front wheels 3 and 3 on the front side of the traveling body 2 and rear wheels 5 and 5 on the rear side (the bed 4 side). 6, round handle 7, running clutch lever 8
And An internal combustion engine 9 as a power source, an electric motor 10, and a generator 12 for charging a storage battery (secondary battery) 11 are provided on a side or a lower side of the operation unit.
The power transmission unit 13 (see FIG. 2) is provided. Since the storage battery 11 has a relatively large weight, it is preferable that the storage battery 11 is disposed at a rearward position of the traveling body 2 such as below the loading platform 4 in order to balance the weight with the internal combustion engine 9 and the electric motor 10.

As the internal combustion engine 9, a gasoline engine,
It is a diesel engine or the like, and the electric motor 10 may be a DC motor, a thyristor motor, an induction motor, or the like. The generator 12 may use an alternator (semiconductor rectification type) or the like as a generator in an automobile.

As shown in FIG. 2, a power transmission unit 13 from the internal combustion engine 9 and the electric motor 10 to a transmission (transmission) 20 to the rear wheels 5, 5 (front wheels 3, 3) is as follows. It is configured. That is, the first transmission clutch 15 is provided on the output shaft 14 of the internal combustion engine 9, and the first gear 1 on the downstream side thereof is provided.
6 meshes with a transmission gear 18 provided on a counter shaft 17. The power is transmitted to the generator 12 from a power generation gear 19 meshing with the transmission gear 18.

On the other hand, the second transmission gear 21 meshes with the second transmission gear 21 fixed to the counter shaft 17 so as to transmit power to the traveling driven gear 23 attached to the traveling transmission shaft 22, while being downstream from the second transmission gear 21. 2nd transmission clutch 2
The transmission shaft 25 is disposed so as to be rotationally driven through the transmission shaft 4.
The third transmission gear 26 attached to the transmission shaft 25 meshes with an output gear 27 attached to the output shaft of the electric motor 10.

The transmission 20 is connected to the transmission 20 by the transmission 20.
In the power transmission path, a traveling clutch 28 is interposed, and the traveling clutch 28 is configured so that a driver (operator) can manually operate a power transmission disconnection operation with an operation lever 28a.

A microcomputer as control means for selecting whether to run the vehicle by driving the internal combustion engine 9 and charge the storage battery 11 or to run the vehicle by the electric motor 10 and to execute the control. The controller 30 is connected to input signals of a selection switch 31 for executing the selection of the operation mode and an operation switching lever 32 for forward / stop / reverse when the electric motor 10 runs, Further, the first transmission clutch 15 and the second transmission clutch 24 are connected to respective actuators (electromagnetic solenoids, etc.) 15a and 24a and turned on.
・ Output a signal to turn OFF. Also, the generator 12
The controller 30 operates (drives) to charge the storage battery 11 via a charging circuit (not shown) that allows the battery to be charged at a predetermined voltage or higher.

In the above configuration, for example, when loading agricultural products dug from a ridge in a field, the hybrid agricultural work transporter 1 runs intermittently along the ridge by the operation of the electric motor 10. , The selection switch 31 is switched to the electric mode. As a result, the controller 30 executes control to stop the internal combustion engine 9, switch the first transmission clutch 15 to power transmission OFF (clutch disengaged state), and further switch the second transmission clutch 24 to ON (clutch connected state). I do. That is, each actuator (electromagnetic solenoid or the like) 15a, 24a is operated.

In this state, when the operation switching lever 32 is set to, for example, the forward side, the rotational force of the electric motor 10 becomes
Output gear 27, third transmission gear 26, transmission shaft 25, second transmission clutch 24, second transmission gear 21, traveling-side driven gear 2
3 and transmitted to the traveling transmission shaft 22, and if the traveling clutch 28 is set to ON, the vehicle advances. First transmission clutch 15
As a result, the power of the electric motor 10 does not wastefully rotate the internal combustion engine 9.

Normally, in the above-described operation of loading crops in the field, the transporter 1 for hybrid farming frequently repeats running and stopping alternately, and the running speed is low. The interval between traveling and stopping may be set in advance, the traveling speed may be set arbitrarily, or the steering may be set so as to be straight ahead only (turning is prohibited). The operation switching lever 32 and a brake operation unit (not shown) may be provided on the side surface of the traveling machine body 2 so that the operator can operate while walking on the ground.

In the case of traveling on a road, the selection switch 3
When 1 is switched to the road mode, the controller 30 controls the electric motor 10 to stop, the second transmission clutch 24 to be switched OFF (clutch disengaged), and the first transmission clutch 15 to be switched ON (clutch engaged). Is done. In this state, when the operator sitting in the driver's seat 6 operates the internal combustion engine (engine) 9, the output shaft 14
Is transmitted from the first gear 16 to the counter shaft 17 via the transmission gear 18, and the generator 12 is driven from the power generation side gear 19 meshing with the transmission gear 18, so that the power generation work can be performed. The storage battery 11 can be charged at an idling rotation speed or higher.

On the other hand, the rotational force of the counter shaft 17 does not rotate the electric motor 10 by the disengagement of the second transmission clutch 24, so that no unnecessary load is applied to the internal combustion engine 9 and fuel consumption is improved, while the second transmission is improved. The transmission 21 is transmitted from the gear 21 and the traveling side driven gear 23 to the traveling transmission shaft 22,
If you set in, you will move forward. The operator can change the rotation speed of the internal combustion engine (engine) 9 by using an accelerator lever (not shown), and move forward or backward at a predetermined traveling speed by operating an operation lever (not shown) of the transmission 20. Retreat is possible.

As a modification of this embodiment, the generator 1
2 may be driven from the output shaft 14 of the internal combustion engine 9 via a power transmission system using a belt pulley, or may be directly connected to the output shaft 14.

In the second embodiment shown in FIG.
The first gear 16 attached to the output shaft 14 is engaged with a transmission gear 18 provided on a counter shaft 17. The transmission shaft 25 is arranged to be rotationally driven via a transmission clutch 42 provided on the counter shaft 17. The third transmission gear 26 attached to the transmission shaft 25 has a generator and an electric motor unit meshed with a gear 27 of a generator motor 40 provided on the same shaft 41.

The second transmission gear 21 provided between the transmission clutch 42 and the third transmission gear 26 meshes with the traveling side driven gear 23 provided on the traveling transmission shaft 22. In addition, a traveling clutch 28 is interposed in the power transmission path from the traveling transmission shaft 22 to the transmission 20, and the traveling clutch 28 is operated by an operation lever 28.
It is configured so that the power transmission disconnection operation can be manually operated at a.

In this embodiment, when the selection switch 31 is switched to the electric mode so as to stop the internal combustion engine 9, the controller 30 sets the transmission clutch 42 to OFF (clutch disengagement). Controlled. When the operation switching lever 32 is set to, for example, the forward side as described above, the electric motor section of the generator motor 40 operates, and the rotational force of the output is
1 to the output gear 27, the third transmission gear 26, the transmission shaft 25,
The power is transmitted from the second transmission gear 21 and the traveling-side driven gear 23 to the traveling transmission shaft 22, and if the traveling clutch 28 is set to the engaged state, the vehicle moves forward.

On the other hand, since the transmission clutch 42 is in the disengaged state, the rotational power of the electric motor is not transmitted to the internal combustion engine 9 side, so that unnecessary energy is not consumed.

The operation switching lever 32 and a brake operation (not shown) are provided so that the traveling speed can be set arbitrarily, setting means for setting the steering so as to be only straight ahead can be provided, and the operator can operate while walking on the ground. It is the same as that of the above-mentioned embodiment that a part may be provided in the side of traveling machine body 2.

When the selection switch 31 is switched to the road mode, the electric motor section of the generator motor 40 is stopped, and the transmission clutch 42 is controlled to be switched ON (clutch engaged). In this state, when the operator sitting in the driver's seat 6 operates the internal combustion engine (engine) 9, the rotational force from the output shaft 14 is transmitted from the first gear 16 to the counter shaft 17 via the transmission gear 18, The rotational force of the counter shaft 17 rotates the transmission shaft 25 by the engagement of the transmission clutch 42, so that the electric motor 10 is not rotated, but the second transmission gear 21 and the traveling-side driven gear 23
Is transmitted to the traveling transmission shaft 22 and the traveling clutch 28 is set to the on position, the vehicle can move forward, and the generator in the generator motor 40 via the third transmission gear 26 and the gear 27 attached to the transmission shaft 25. Can be rotated, power generation work can be performed, and the storage battery 11 can be charged at an idling rotational speed or higher.

On the other hand, the operator can change the rotation speed of the internal combustion engine (engine) 9 by using an accelerator lever (not shown), and operate a predetermined travel by operating an operation lever (not shown) of the transmission 20. Forward or backward is possible at the speed.

As a modified example of the second embodiment, as shown by a two-dot chain line in FIG.
7 or directly to the output shaft 14 of the internal combustion engine 9, while using an electric motor instead of the generator motor 40, the generator 12 is driven only when the internal combustion engine 9 is driven, and the power generation work is performed. It may be configured so as to be possible.

[0028]

As described above in detail, the hybrid agricultural work transporter according to the first aspect of the present invention includes an internal combustion engine,
A hybrid agricultural work vehicle including an electric motor, a generator, a storage battery, a power transmission unit to a traveling unit, and a transmission, wherein a selection is made to switch to drive either the internal combustion engine or the electric motor. Comprising a switch and a controller, when selecting to drive the internal combustion engine, controlling to drive and charge the generator and to disconnect the second transmission clutch for transmitting power from the electric motor side to the traveling unit; When it is selected to drive the electric motor, control is performed so as to disengage the first transmission clutch that transmits power from the internal combustion engine to the traveling section.

According to a second aspect of the present invention, there is provided a hybrid agricultural work transporter including an internal combustion engine, a generator, an electric motor, a storage battery, a power transmission unit to a traveling unit, and a transmission. Transport machine, comprising a selection switch and a controller for switching to drive either the internal combustion engine or the electric motor, the power transmission from the internal combustion engine and the electric motor to the transmission, respectively. A power transmission unit is provided, and the power transmission unit is provided with a transmission clutch capable of disconnecting power transmission from the internal combustion engine side, and when the electric motor is selected to be driven, the transmission clutch is disengaged. When it is selected to drive the internal combustion engine, the transmission clutch is engaged, and at least the generator is driven to charge. And controls so as to.

In any of the above configurations, when the traveling body is driven by the electric motor, the rotational force is not transmitted to the internal combustion engine side, and the load required to rotate the driving parts of the engine is eliminated. Since the electric energy of the storage battery is not wastefully consumed when the motor is driven and the vehicle is driven by the electric motor, the traveling control such as the traveling speed and the intermittent stop is facilitated. On the other hand, when driving the internal combustion engine, high-speed running such as running on the road can be performed, and at the same time, the work of charging the storage battery by driving the generator can be performed. The effect is that it can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hybrid agricultural work transporter.

FIG. 2 is a functional block diagram of a first embodiment of a configuration for selecting drive switching between an internal combustion engine and an electric motor.

FIG. 3 is a functional block diagram of a second embodiment.

[Explanation of symbols]

 2 running body 3 front wheel 5 rear wheel 9 internal combustion engine 10 electric motor 11 storage battery 12 generator 13 power transmission unit 14 output shaft 15 first transmission clutch 17 counter shaft 20 transmission 22 running shaft 24 second transmission clutch 28 running clutch 30 controller 31 selection switch 32 operation switching lever

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) F02D 29/00 B60K 9/00 Z 29/02

Claims (2)

[Claims] 1. An internal combustion engine, an electric motor, a generator,
A hybrid agricultural transporter including a storage battery, a power transmission unit to a traveling unit, and a transmission, comprising: a selection switch and a controller for switching to drive any one of the internal combustion engine and the electric motor; When the engine is selected to be driven, the generator is driven and charged, and the second transmission clutch that transmits power from the electric motor to the traveling unit is controlled to be disengaged, so that the electric motor is driven. When selected, a transporter for hybrid agricultural work is controlled so as to disengage a first transmission clutch for transmitting power from the internal combustion engine to a traveling unit. 2. An internal combustion engine, a generator, an electric motor,
A hybrid agricultural transport vehicle including a storage battery, a power transmission unit to a traveling unit, and a transmission, comprising: a selection switch and a controller that switches to drive either the internal combustion engine or the electric motor; Along with configuring the power transmission unit to transmit power to the transmission from the internal combustion engine and the electric motor, respectively,
The power transmission unit is provided with a transmission clutch capable of disconnecting power transmission from the internal combustion engine side, and when it is selected to drive the electric motor, the transmission clutch is turned off to drive the internal combustion engine. Wherein the transmission clutch is connected, and at least the generator is controlled so as to be charged by driving the generator.