JP6968881B2 - Work management system - Google Patents

Description

The present invention relates to a work management system for managing the work in the working machine provided with an electric generator.

Conventionally, a working machine disclosed in Patent Document 1 is known.
The working machine (tractor) disclosed in Patent Document 1 includes a vehicle body, an engine, a generator, an electric motor, and a traveling device, and includes power from the engine and power from the generator (of the electric motor). It is configured so that the traveling device can be driven by the driving force).

Japanese Patent Publication "Japanese Patent Laid-Open No. 2011-245906"

However, in the disclosed technology of Patent Document 1, the working device (spraying device, etc.) is operated by the power of the generator to acquire the operation information at the time of the operation of the working device, and based on the acquired operation information. No consideration is given to managing work in the work equipment.
Therefore, according to the present invention, it is possible to operate the work device by the power of the generator, acquire the operation information at the time of the operation of the work device, and manage the work in the work device based on the acquired operation information. an object of the present invention is to provide a work management systems.

The work management system according to one aspect of the present invention is mounted on a structure provided in a mission case of a work machine and is driven by power transmitted from a PTO shaft, and the power is transmitted to a work device provided in the work machine. Management of work in the work device based on the operation information acquired by the generator, the information acquisition unit that acquires the operation information of the work device operated by the power from the generator, and the operation information acquired by the information acquisition unit. The work management unit, the control unit that controls the work device based on the operation information acquired by the information acquisition unit, the motor driven by the power from the generator, the height detection device, and the height adjustment. The working device comprises a mechanism and a rotating body for spraying a sprayed object by rotating by receiving power from the motor, and the height detecting device is a height of the rotating body from the ground. The height adjusting mechanism adjusts the height of the rotating body based on the height detected by the height detecting device, and the information acquisition unit detects the height as the operating information. The height information about the height detected by the apparatus is acquired, and the control unit controls the rotation speed of the rotating body based on the height information acquired by the information acquisition unit .

The work management system according to one aspect of the present invention is mounted on a structure provided in a mission case of a work machine and is driven by power transmitted from a PTO shaft, and the power is transmitted to a work device provided in the work machine. Management of work in the work device based on the operation information acquired by the generator, the information acquisition unit that acquires the operation information of the work device operated by the power from the generator, and the operation information acquired by the information acquisition unit. A work management unit that performs the above, a control unit that controls the work device based on the operation information acquired by the information acquisition unit, a motor driven by power from the generator, power from the PTO shaft, and the motor. The work device includes a power transmission mechanism capable of transmitting power from the above to the work device and a PTO transmission unit capable of changing the rotation speed of the PTO axis, and the work device rotates by receiving power from the motor. Thereby, the control unit has a rotating body for spraying the sprayed object, and the control unit transmits a control signal to the PTO transmission unit to shift the speed of the PTO axis based on the operation information, thereby shifting the rotation speed of the rotating body. To control .

The work management system according to one aspect of the present invention is mounted on a structure provided in a mission case of a work machine and is driven by power transmitted from a PTO shaft, and the power is transmitted to a work device provided in the work machine. Management of work in the work device based on the operation information acquired by the generator, the information acquisition unit that acquires the operation information of the work device operated by the power from the generator, and the operation information acquired by the information acquisition unit. A work management unit that performs the operation, a control unit that controls the work device based on the operation information acquired by the information acquisition unit, a motor driven by power from the generator, and a posture that detects the posture of the work device. The work device includes a detection device and a posture adjustment mechanism that adjusts the posture of the work device based on the posture detected by the posture detection device, and the work device is sprayed by being rotated by receiving power from the motor. The information acquisition unit has a rotating body for spraying an object, and the information acquisition unit acquires attitude information regarding the attitude of the work device detected by the attitude detection device as the operation information, and the control unit has the information acquisition unit. The rotation speed of the rotating body is controlled based on the acquired attitude information .

The work management system according to one aspect of the present invention is a power generation that is mounted on a structure provided in a mission case of a work machine, is driven independently of a PTO axis, and transmits power to a work device provided in the work machine. The work in the work device is managed based on the operation information acquired by the machine, the information acquisition unit that acquires the operation information at the time of operation of the work device operated by the power from the generator, and the information acquisition unit. A work management unit, a control unit that controls the work device based on the operation information acquired by the information acquisition unit, a motor driven by power from the generator, a height detection device, and a height adjustment mechanism. The working device has a rotating body that disperses a sprayed object by rotating by receiving power from the motor, and the height detecting device detects the height of the rotating body from the ground. Then, the height adjusting mechanism adjusts the height of the rotating body based on the height detected by the height detecting device, and the information acquisition unit uses the height detecting device as the operating information. The height information regarding the detected height is acquired, and the control unit controls the rotation speed of the rotating body based on the height information acquired by the information acquisition unit .

The work management system according to one aspect of the present invention is a power generation that is mounted on a structure provided in a mission case of a work machine, is driven independently of a PTO axis, and transmits power to a work device provided in the work machine. The work in the work device is managed based on the operation information acquired by the machine, the information acquisition unit that acquires the operation information at the time of operation of the work device operated by the power from the generator, and the information acquisition unit. A work management unit, a control unit that controls the work device based on the operation information acquired by the information acquisition unit, a motor driven by power from the generator, and an attitude detection device that detects the posture of the work device. And a posture adjusting mechanism that adjusts the posture of the working device based on the posture detected by the posture detecting device, and the working device receives power from the motor and rotates to disperse the object. It has a rotating body to be scattered, and the information acquisition unit acquires attitude information regarding the attitude of the work device detected by the attitude detection device as the operation information, and the control unit is acquired by the information acquisition unit. The rotation speed of the rotating body is controlled based on the attitude information .

Preferably, the work management unit has a display device for displaying the operation information.

Preferably, the structure is a coupling device capable of connecting a working device driven by a power transmitted from the PTO axis.

Preferably, the connecting device projects the PTO shaft with the first portion attached to the mission case, the second portion to which the working device can be attached, and the first portion attached to the mission case. It has a third portion where a through hole is formed and the generator is mounted.

Preferably, the output voltage of the generator is 60 V or less.

According to the above work management system and work management method, the work device is operated by the power of the generator, the operation information at the time of the operation of the work device is acquired, and the work in the work device is managed based on the acquired operation information. It is possible to do.

It is a side view which shows the whole structure of a working machine. It is a top view which shows the rear part of a working machine. It is a figure which shows the power transmission system of an engine and a transmission. It is a perspective view which shows the mounting state of the generator with respect to a mission case. It is a rear view of a spraying device. It is a bottom view of a spraying device. It is a block diagram of a work management system. It is a figure which shows the 1st Embodiment of a power transmission mechanism. It is a figure which shows the 2nd Embodiment of a power transmission mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the work machine 1 used in the work management system and the work management method according to the present invention will be described.
FIG. 1 shows an overall side view of the working machine 1, and FIG. 2 shows a plan view of the rear part of the working machine 1.

The working machine 1 includes a traveling vehicle 2 and a working device 3.
The traveling vehicle 2 is a vehicle that travels while towing the working device 3. In the case of the present embodiment, since the traveling vehicle 2 is a tractor, the traveling vehicle 2 will be described below as the tractor 2. However, the traveling vehicle 2 is not limited to the tractor, and may be an agricultural vehicle such as a combine harvester or a rice transplanter, or a construction vehicle or the like. Further, the traveling vehicle 2 may be a pickup truck, and the working device 3 may be capable of traveling independently without being towed by the traveling vehicle 2.

First, the overall configuration of the tractor (traveling vehicle) 2 will be described.
The tractor 2 includes a vehicle body 4, a traveling device 5, and a connecting device 6. In the embodiment of the present invention, the front side (left side in FIG. 1) of the driver seated in the driver's seat 7 mounted on the vehicle body 4 is the front, the rear side of the driver (right side in FIG. 1) is the rear, and the left side of the driver. (The front side of FIG. 1) will be described as the left side, and the driver's right side (the back side of FIG. 1) will be described as the right side. Further, the horizontal direction K2 (see FIG. 2), which is a direction orthogonal to the front-rear direction K1 (see FIG. 1), will be described as the vehicle width direction.

The vehicle body 4 has a vehicle body frame 8, a clutch housing 9, and a mission case 10. The vehicle body frame 5 extends in the front-rear direction of the vehicle body 4. An internal combustion engine 11 is mounted on the vehicle body frame 5. In the case of the present embodiment, the internal combustion engine 11 is an engine 11, and more specifically, a diesel engine. The engine 11 is mounted on the vehicle body frame 5 and arranged at the front portion of the vehicle body 4. The clutch housing 9 is connected to the rear of the engine 11 and houses the clutch. The transmission case 10 is connected to the rear portion of the clutch housing 9 and extends rearward. The mission case 10 houses a transmission 13 and a rear wheel differential device 14, which will be described later. A generator 15 is mounted on the rear portion of the mission case 10 via a structure 25 described later.

The traveling device 5 has a front wheel 5F provided at the front portion of the vehicle body 4 and a rear wheel 5R provided at the rear portion of the vehicle body 4. The front wheel 5F is supported by the vehicle body frame 8. The rear wheel 5R is supported by the output shaft of the rear wheel differential device 14. The traveling device 5 is a tire type in the case of the present embodiment, but may be a crawler type.
The connecting device 6 is a device for connecting the working device 3 that performs work on the field or the like to the rear part of the tractor 2. In the case of this embodiment, the coupling device 6 includes a three-point link mechanism. The specific configuration of the coupling device 6 in this embodiment will be described later. However, the configuration of the connecting device 6 is not particularly limited as long as the working device 3 can be connected to the rear portion of the traveling vehicle 2. For example, when the traveling vehicle 2 is a pickup truck, the connecting device 6 connects the working device 3 by a mechanism other than the three-point link mechanism.

The type of the working device 3 connected to the connecting device 6 is not particularly limited, and for example, a spraying device for spraying a sprayed material such as fertilizer or a chemical, a sowing device for sowing seeds such as agricultural products in a field, a cultivating device for cultivating, and the like. A harvesting device for harvesting, a cutting device for cutting grass and the like, a spreading device for spreading grass and the like, a grass collecting device for collecting grass and the like, a molding device for molding grass and the like, and the like. Note that FIGS. 1 and 2 show an example in which a spraying device is attached as the working device 3.

The tractor 2 includes a PTO shaft 19 for transmitting the power from the engine 11 that drives the tractor 2 to a working device or the like. The PTO axis 19 projects rearward from the mission case 10.
FIG. 3 shows the power transmission system of the engine 11 and the transmission 13.
As shown in FIG. 3, the transmission 13 includes a main shaft (propulsion shaft) 13a, a main transmission unit 13b, and an auxiliary transmission unit 13c. The propulsion shaft 13a is rotatably supported by the housing case of the transmission 13, and the power from the crank shaft of the engine 11 is transmitted to the propulsion shaft 13a. The main transmission 13b has a plurality of gears and a shifter for changing the connection of the gears. The main transmission unit 13b changes the rotation speed input from the propulsion shaft 13a and outputs (shifts) by appropriately changing the connection (meshing) of a plurality of gears with a shifter.

Like the main speed change unit 13b, the auxiliary speed change unit 13c has a plurality of gears and a shifter for changing the connection of the gears. The auxiliary transmission unit 13c changes the rotation speed input from the main transmission unit 13b and outputs (shifts) by appropriately changing the connection (meshing) of a plurality of gears with a shifter.
Further, the transmission 13 includes a shuttle unit 13d. The shuttle unit 13d has a shuttle shaft 16 and a forward / backward switching unit 17. The power output from the auxiliary transmission unit 5c is transmitted to the shuttle shaft 16 via gears and the like. The shuttle shaft 16 is provided with a rear wheel differential device 14. A rear axle that supports the rear wheels is rotatably supported by the rear wheel differential device 14. The front-rear switching unit 13 is composed of, for example, a clutch such as a hydraulic clutch or an electric clutch, and switches the rotation direction of the shuttle shaft 16, that is, forward and reverse movement of the tractor 2 by turning on and off the clutch.

The PTO power transmission unit 13e has a PTO clutch 18 and a PTO shaft 19. The PTO shaft 19 is rotatably supported and can transmit power from the propulsion shaft 13a. The PTO shaft 19 has a PTO propulsion shaft 19a and a PTO output shaft 19b. The PTO propulsion shaft 19a is connected to the PTO output shaft 19b via the PTO transmission unit 20.
The PTO speed change unit 20 can change the rotation speed of the PTO propulsion shaft 19a and transmit it to the PTO output shaft 19b by an operation unit such as a PTO speed change lever. The PTO speed change unit 20 includes a speed change actuator such as an electromagnetic solenoid or an electric motor that can operate the operation unit based on a control signal from the control unit 83 described later.

The PTO clutch 18 is a clutch that can be switched between a connected state in which the power of the propulsion shaft 13a is transmitted to the PTO shaft 19 and a disconnected state in which the power of the propulsion shaft 13a is not transmitted to the PTO shaft 19. Specifically, the PTO clutch 18 is provided between the propulsion shaft 13a and the PTO propulsion shaft 19a. The PTO clutch 18 is composed of a hydraulic clutch, an electric clutch, or the like, and when the clutch is turned on or off, the power of the engine 11 (the power of the propulsion shaft 13a) is transmitted to the PTO shaft 19, and the power of the propulsion shaft 13a is transmitted to the PTO. It is possible to switch between a state in which transmission is not transmitted to the shaft 19.

A power branching portion 21 is provided in the middle of the PTO output shaft 19b. The power branching section 21 branches into a first path 21a for directly outputting the rotational power transmitted to the PTO output shaft 19b from the PTO output shaft 19b and a second path 21b for transmitting the rotational power to the generator 15. The power branch portion 21 transmits rotational power from, for example, the first pulley 211 attached to the PTO output shaft 19b, the second pulley 212 attached to the input shaft of the generator 15, and the first pulley 211 to the second pulley 212. It is composed of a belt 213 and a belt 213. However, the configuration of the power branch portion 21 is not limited to the configuration using the pulley and the belt, and may be another configuration (for example, a configuration using a gear transmission mechanism or another power transmission mechanism).

As a result, the rotational power of the PTO output shaft 19b is split into two by the power branch portion 21, one of which is directly output from the PTO output shaft 19b and the other of which is transmitted to the input shaft of the generator 15 to cause the generator 15. Activate.
The generator 15 is connected to the motor 23 via the inverter 22. The motor 23 is an electric motor and is driven (rotated) by the power (electric power) from the generator 15. The inverter 22 functions as a transmission that changes the rotation speed (rotational speed) of the motor 23. The number of motors 23 driven by the power from the generator 15 may be one or two or more.

In the case of the above embodiment, the generator 15 is driven by the power transmitted from the PTO shaft 19, but the generator 15 may be driven independently of the PTO shaft 19. In other words, the generator 15 is not limited to the one driven by receiving the power from the PTO shaft 19. For example, a power branching mechanism for branching power from the output shaft is connected to the output shaft of the engine 11 provided in the traveling vehicle (tractor) 2, and one of the branched powers is transmitted to the PTO shaft 19 and the other. May be configured to transmit to the generator 15. The power branching mechanism can be composed of, for example, a gear mechanism in which a plurality of gears are combined. Further, the generator 15 may be driven by a fuel oil such as light oil or gasoline or a fuel gas such as natural gas.

The generator 15 is an alternator in the case of this embodiment. However, the generator 15 may be a motor generator. The output voltage of the generator 15 is preferably 60 V or less. By using the generator 15 having an output voltage of 60 V or less, power consumption can be reduced and safety is excellent. Therefore, as the working device 3, one that can operate at a low voltage of 60 V or less is preferably used. Specifically, as the working device 3, a spraying device or a seeding device is preferably used. In the case of the present embodiment, since the working device 3 is a spraying device, the working device 3 will be described below as a spraying device 3.

Next, the mounting structure of the generator 15 will be described.
As shown in FIG. 4, a structure 25 is provided at the rear of the mission case 10, and a generator 15 is mounted on the structure 25.
In the case of the present embodiment, the structure 25 is a connecting device capable of connecting a working device 3 or the like driven by power transmitted from the PTO shaft 19 (PTO output shaft 19b), and is specifically a ladder hitch. The structure 25 constitutes a coupling device different from the coupling device 6 including the three-point link mechanism.

The structure 25 is detachably attached to the rear surface of the mission case 10. The structure 25 has a first front plate 25a, a second front plate 25b, a first side plate 25c, a second side plate 25d, a rear plate 25e, and a lower plate 25f.
The first front plate 25a and the second front plate 25b are arranged at intervals in the vehicle body width direction and extend in the vertical direction. The first front plate 25a is arranged on one side (left side) in the width direction of the vehicle body, and is attached to the left portion of the rear surface of the mission case 10 by bolts B1. The second front plate 25b is arranged on one side (right side) in the vehicle body width direction, and is attached to the rear right portion of the mission case 10 by bolts B2. That is, the first front plate 25a and the second front plate 25b form a first portion attached to the mission case 10.

The front end of the first side plate 25c is connected to the first front plate 25a and extends rearward (in a direction away from the mission case 10). The front end of the second side plate 25d is connected to the second front plate 25b and extends rearward. The lower plate 25f is. It extends in the width direction of the vehicle body and connects between the lower part of the first side plate 25c and the lower part of the second side plate 25d. A drawbar (traction hitch) or the like can be attached to the lower plate 25f.

A first mounting portion 251 is provided at the rear portion of the first side plate 25c. A second mounting portion 252 is provided at the rear portion of the second side plate 25d. A plurality of through holes are formed in the first mounting portion 251 and the second mounting portion 252 at intervals in the vertical direction. The through hole can be used to connect the working device 3 and the like. That is, the working device 3 and the like can be connected to the first mounting portion 251 and the second mounting portion 252 of the structure 25. In other words, the first mounting portion 251 and the second mounting portion 252 constitute a second portion to which the working device 3 can be mounted.

The rear plate 25e is a rectangular plate, and is attached so as to communicate between the first mounting portion 251 and the second mounting portion 252. A through hole 25g is formed in the rear plate 25e, and the PTO shaft 19 (PTO output shaft 19b) projects rearward from the through hole 25g. A space S is formed between the rear plate 25e and the rear surface of the mission case 10, and a power branch portion 21 can be arranged in the space S. A generator 15 is mounted on the rear surface of the rear plate 25e by a fixture such as a bolt. That is, the rear plate 25e constitutes a third portion in which the through hole 25g for projecting the PTO shaft 19 is formed and the generator 15 is mounted in a state where the first portion is attached to the mission case 10. The generator 15 is arranged above the PTO shaft 19. The generator 15 is located between the first mounting portion 251 and the second mounting portion 252.

The structure 25 can be easily attached to and detached from the mission case 10 by attaching and detaching the bolts B1 and B2. By attaching / detaching the structure 25 to / from the mission case 10, the generator 15 can be attached / detached to / from the mission case 10. Therefore, the generator 15 can be easily attached to the tractor 2 that does not have the generator 15 as needed.

The structure 25 may have a structure for attaching the generator 15 to the mission case 10, and is not limited to a connecting device (ladder hitch or the like) to which the working device 3 or the like can be connected. For example, the structure 25 may be a dedicated jig or bracket for mounting the generator 15 on the mission case 10.
As shown in FIG. 4, a connecting device 6 is connected to the mission case 10. The coupling device 6 has a lift arm 61, a three-point link mechanism 62, and a shift cylinder 63.

The lift arm 61 includes a first lift arm 61L and a second lift arm 61R. The first lift arm 61L is arranged on one side (left side) in the vehicle body width direction. The second lift arm 61R is arranged on the other side (right side) in the vehicle body width direction. The first lift arm 61L and the second lift arm 61R are pivotally supported by a horizontal axis 64 whose front end is supported on the upper part of the mission case 10, and extend rearward.

The three-point link mechanism 62 has a top link 621, a lower link 622, and a lift rod 623. The top link 621 is arranged between the first lift arm 61L and the second lift arm 61R, and the front end portion is pivotally supported by the first pivot branch 26 provided in the upper part of the mission case 10. The lower link 622 includes a first lower link 622L and a second lower link 6226R. The front ends of the first lower link 622L and the second lower link 6226R are pivotally supported by the second pivot branch 27 provided at the lower part of the mission case 10. The lift rod 623 includes a first lift rod 623L and a second lift rod 623R. The upper end of the first lift rod 623L is connected to the rear end of the first lift arm 61L, and the lower end is connected to the middle portion of the first lower link 622L in the length direction. The upper end of the second lift rod 623R is connected to the rear end of the second lift arm 61R, and the lower end is connected to the middle portion of the second lower link 622R in the length direction.

A joint to which the working device 3 can be connected is provided at the rear end of the top link 621 and the rear end of the lower link 622. By connecting the working device 3 to the rear end of the top link 621 and the rear end of the lower link 622, the working device 3 is movably connected to the rear of the tractor 2.
The lift cylinder 63 is a hydraulic cylinder and includes a first lift cylinder 63L and a second lift cylinder 63R. One end of the first lift cylinder 63L is connected to the first lift arm 61L, and the other end is connected to the lower left of the mission case 10. One end of the second lift cylinder 63R is connected to the second lift arm 61R, and the other end is connected to the lower right portion of the mission case 10. By driving the lift cylinder 63, the first lift arm 61L and the second lift arm 61R rotate around the horizontal axis 64 and swing in the vertical direction. An electromagnetic control valve is connected to the first lift cylinder 63L and the second lift cylinder 63R. The electromagnetic control valve can drive the first lift cylinder 63L and the second lift cylinder 63R based on a control signal from the control unit 83, which will be described later.

By driving the lift cylinder 63, the height of the work device 3 can be adjusted and the inclination in the vehicle body width direction (difference between the height of the right portion and the height of the left portion) can be adjusted. When adjusting the height, both the first lift cylinder 63L and the second lift cylinder 63R are driven in the same manner. When adjusting the inclination, either the first lift cylinder 63L or the second lift cylinder 63R is driven. Specifically, the lift cylinder arranged on the side where the height of the work device 3 is low is extended, or the lift cylinder arranged on the side where the height is high is driven to be shortened. The lift cylinder 63 constitutes a height adjusting mechanism 91 and an attitude adjusting mechanism 92, which will be described later.

As shown in FIGS. 1 and 2, the spraying device 3 includes an accommodating portion 31 and a spraying portion 32.
The storage unit 31 stores the sprayed material (fertilizer, pesticide, etc.) to be sprayed on the field.
The accommodating portion 31 is composed of a substantially inverted pyramidal hopper. The hopper includes a first hopper 31A and a second hopper 31B. However, the number of hoppers is not limited. The accommodating portion 31 has an inlet for the sprayed material at the upper end and an outlet for taking out the sprayed material at the lower end. The number of outlets is not limited, but in the case of this embodiment, it is set according to the number of rotating bodies (disks) 40 described later. Specifically, the number of rotating bodies 40 is two, and the number of outlets is also two.

The spraying unit 32 sprays the sprayed material contained in the accommodating unit 31. As shown in FIGS. 1 and 5, the spraying portion 32 is provided below the accommodating portion 31. The spraying portion 32 includes at least two or more spraying portions. It is preferable that at least two or more spraying portions have different spraying directions for all the spraying portions, but the spraying portions may include spraying portions having the same spraying direction.
As shown in FIGS. 2, 5, and 6, the spraying section 32 includes a first spraying section 321 and a second spraying section 322. That is, in the case of this embodiment, the number of spraying portions 32 is two. However, the number of the spraying portions 32 is not limited to two, and may be three or more. The number of spraying portions 32 and the number of rotating bodies 40 are the same. The first spraying portion 321 and the second spraying portion 322 are provided side by side in the vehicle width direction. Hereinafter, two spraying portions (first spraying portion 321 and second spraying portion 322) will be described.

As shown in FIGS. 5 and 6, the first spraying portion 321 has a first rotating body 410 and a first shutter device 411.
The first rotating body 410 has a disk shape and rotates around a central axis 40a extending in the vertical direction (vertical direction). A plurality of blade members 40b are attached to the upper surface of the first rotating body 410. The plurality of blade members 40b are arranged at intervals in the circumferential direction, and extend from the vicinity of the central axis 40a toward the outer diameter direction. The first rotating body 410 rotates around the central axis 40a, so that the scattered material that has fallen from the first outlet 71 hits the blade member 40b and is radially scattered outward (outward diameter direction). ..

The first shutter device 411 includes a shutter and an electric motor (not shown). The shutter is attached to one outlet (first outlet) 311 of the accommodating portion 31, and the area (opening) of the first outlet 311 can be changed by moving the shutter. The electric motor is a stepping motor or the like, and is connected to the shutter. The first shutter device 411 changes the opening degree of the first outlet 71 by moving the shutter by driving an electric motor. As a result, the amount of sprayed material sprayed by the first spraying unit 321 is adjusted.

As shown in FIGS. 5 and 6, the second spraying portion 322 has a second rotating body 420 and a second shutter device 421. Since the configuration of the second rotating body 420 is the same as that of the first rotating body 410, the description thereof will be omitted. The configuration of the second shutter device 421 is the same as that of the first shutter device, except that the shutter is attached to the other outlet (second outlet) 312 of the accommodating portion 31. The second shutter device 421 can adjust the amount of sprayed material by the second spraying unit 322 by changing the opening degree of the second outlet 312.

As shown in FIGS. 2 and 6, the first rotating body 410 and the second rotating body 420 are provided side by side in the vehicle width direction. As shown in FIG. 2, the first rotating body 410 and the second rotating body 420 rotate in different directions from each other. In the case of the present embodiment, as shown by the black arrow in FIG. 2, the first rotating body 410 rotates in the counterclockwise direction and the second rotating body 420 rotates in the clockwise direction in a plan view.

The first rotating body 410 is arranged below the first outlet 311 of the accommodating portion 31. The sprayed material that has fallen from the first outlet 311 is sprayed by the rotating first rotating body 410. The second rotating body 420 is arranged below the second outlet 312 of the accommodating portion 31. The sprayed material that has fallen from the second outlet 312 is sprayed by the rotating second rotating body 420.
In the case of this embodiment, the spraying directions of the first spraying portion 321 and the second spraying portion 322 are different from each other. The spraying direction of the first spraying portion 321 is one of the vehicle width directions and the rear. The spraying direction of the second spraying portion 322 is the other and the rear in the vehicle width direction. As shown by the white arrows in FIG. 2, in the case of the present embodiment, the spraying directions of the first spraying portion 321 are right and right rear, and the spraying directions of the second spraying portion 322 are left and left rear. The direction indicated by the white arrow is the main spraying direction, and the fan is actually sprayed in a fan shape including the direction indicated by the white arrow.

As shown in FIG. 6, the spraying section 32 has a regulating plate that regulates the spraying direction of each of the first spraying section 321 and the second spraying section 322. The regulation plate includes a first regulation plate 44, a second regulation plate 45, and a third regulation plate 46. Each regulation plate can be attached to a frame 35 or the like, which will be described later. The first regulation plate 44 is provided in front of the first rotating body 410 and extends in the vehicle width direction. The second regulation plate 45 is provided in front of the second rotating body 420 and extends in the vehicle width direction. The third regulating plate 46 is provided between the first rotating body 410 and the second rotating body 420, and extends in the front-rear direction.

The spraying direction due to the rotation of the first rotating body 410 is regulated by the first regulating plate 44 and the third regulating plate 46, and is mainly to the right and to the right rear. The spraying direction due to the rotation of the second rotating body 420 is regulated by the second regulating plate 45 and the third regulating plate 46, and is mainly left and rear left. However, the regulating plate has any configuration (position, number, shape, mounting structure, etc.) as long as the spraying directions of the first spraying portion 321 and the second spraying portion 322 can be regulated in a desired direction. ) May be. Further, it is also possible to configure the structure so that a part or all of the regulation plate is not provided.

In the case of the present embodiment, the first spraying section 321 and the second spraying section 322 are responsible for spraying in different directions. This makes it possible to easily perform uniform spraying on the field. Further, by making the rotation speeds of the first rotating body 410 and the second rotating body 420 different, it is possible to make the spraying distance of the tractor 2 to one side and the other side in the vehicle width direction different. This facilitates appropriate spraying according to the shape of the field and the traveling position of the tractor 2.

The spraying device 3 includes a frame (mounting portion) 35. The frame 35 supports the accommodating portion 31, the spraying portion 32, and the motor 23. As shown in FIGS. 1 and 2, the front portion of the frame 35 is coupled to a coupling device 6 provided at the rear portion of the tractor 2. As a result, the spraying device 3 supported by the frame 35 is detachably attached to the rear portion of the tractor 2. The configuration (shape, etc.) of the frame 35 is not limited to the illustrated configuration.

As shown in FIGS. 5 to 9, the spraying device 3 includes a power transmission mechanism 50. The power transmission mechanism 50 is a mechanism capable of transmitting the power from the motor 23 and the power from the PTO shaft 19 to the first rotating body 410 and the second rotating body 420. The configuration of the power transmission mechanism 50 is not particularly limited, but is a selective transmission unit (electric) capable of selectively transmitting the power from the motor 23 and the power from the PTO shaft 19 to the first rotating body 410 or the second rotating body 420. It can be equipped with a clutch, etc.). Further, as the power transmission mechanism 50, a mechanism (planetary gear mechanism or the like) in which the power from the motor 23 and the power from the PTO shaft 19 are input, and the power output from the mechanism are separated into one and the first. It may also be provided with a separation transmission unit that transmits to the rotating body 410 or the second rotating body 420.

FIG. 8 shows a first embodiment of the power transmission mechanism 50. Hereinafter, the power transmission mechanism 50 of the first embodiment is referred to as a "first power transmission mechanism 501".
The first power transmission mechanism 501 receives power from the PTO shaft 19 and power from the motor 23, and transmits the input power to the first rotating body 410 or the second rotating body 420.
The motor 23 includes a first motor 231 and a second motor 232. The first motor 231 and the second motor 232 are driven by the electric power supplied from the generator 15. The generator 15 is driven independently of the PTO shaft 19. The first motor 231 and the second motor 232 are driven independently of each other.

The first power transmission mechanism 501 includes a first transmission unit 101 that transmits power to the first rotating body 410, a second transmission unit 102 that transmits power to the second rotating body 420, and power input from the PTO shaft 19. Is provided with a separate transmission unit 103 that separates and transmits the first transmission unit 101 and the second transmission unit 102.
One end side of the transmission shaft 105 is connected to the PTO shaft 19 via a connecting portion 104 such as a shaft joint. The other end of the transmission shaft 105 is connected to the separation transmission unit 103. The transmission shaft 105 transmits the power from the PTO shaft 19 to the separation transmission unit 103.

The separation transmission unit 103 separates and transmits the power transmitted from the PTO shaft 19 (power transmitted from the transmission shaft 105) to one and the other. The separation transmission unit 103 has a first transmission gear 106, a second transmission gear 107, one transmission shaft 108, and the other transmission shaft 109.
The other end side of the transmission shaft 105 is connected to the center of the first transmission gear 106. The second transmission gear 107 meshes with the first transmission gear 106. The gears (first transmission gear 106, second transmission gear 107) constituting the separation transmission unit 103 are all bevel gears. The direction of the rotation axis of the first transmission gear 106 intersects (orthogonally) the direction of the rotation axis of the second transmission gear 107.

One end side of one transmission shaft 108 and one end side of the other transmission shaft 109 are connected to the second transmission gear 107, respectively. One transmission shaft 108 and the other transmission shaft 109 extend from the center of the second transmission gear 107 toward opposite sides.
The first transmission unit 101 and the second transmission unit 102 each have a speed change unit 110. The speed change unit 110 includes a first speed change unit 111 provided in the first transmission unit 101 and a second speed change unit 112 provided in the second transmission unit 102.

The first transmission unit 101 transmits the power transmitted from the separation transmission unit 103 to one side (one transmission shaft 108) to the first rotating body 410. The first transmission unit 101 includes a first transmission unit 111, a first output shaft 119, a third transmission gear 120, and a fourth transmission gear 121.
The first speed change unit 111 changes the rotation speed of the first rotating body 410 according to the speed change of the first motor 231. The first transmission unit 111 includes a drive gear 113 and a planetary gear mechanism 114.

The drive gear 113 is connected to the first motor 231 and rotates with the drive of the first motor 231. The planetary gear mechanism 114 includes a sun gear 115, a planetary gear 116, a planet carrier 117, and an internal gear 118.
The sun gear 115 meshes with the planetary gear 116. The planetary gear 116 is rotatably supported by the planetary carrier 117, and can rotate (revolve) around the sun gear 115. The planetary carrier 117 rotates with the rotation (revolution) of the planetary gear 116. The other end of the transmission shaft 108 is connected to the planet carrier 117. As a result, the planetary gear 116 is connected to the separation transmission unit 103 via the planetary carrier 117 and the transmission shaft 108. The internal gear 118 has internal teeth formed on the inner peripheral surface and external teeth formed on the outer peripheral surface. The internal teeth mesh with the planetary gear 116. The external teeth mesh with the drive gear 113.

One end side of the first output shaft 119 is connected to the center of the sun gear 115. The other end of the first output shaft 119 is connected to the third transmission gear 120. The fourth transmission gear 121 meshes with the third transmission gear 120. The third transmission gear 120 and the fourth transmission gear 121 are both bevel gears. The direction of the rotation axis of the third transmission gear 120 intersects (orthogonally) the direction of the rotation axis of the fourth transmission gear 121. The center of the fourth transmission gear 121 is connected to the central axis of the first rotating body 410. As a result, the rotational power of the fourth transmission gear 121 is transmitted to the first rotating body 410. That is, the rotational power of the sun gear 115 is transmitted to the first rotating body 410 via the first output shaft 119, the third transmission gear 120, and the fourth transmission gear 121.

The second transmission unit 102 transmits the power transmitted from the separation transmission unit 103 to the other (the other transmission shaft 109) to the second rotating body 420. The second transmission unit 102 includes a second transmission unit 112, a second output shaft 122, a fifth transmission gear 123, and a sixth transmission gear 124.
The second speed change unit 112 changes the rotation speed of the second rotating body 420 according to the speed change of the second motor 232. The second transmission unit 112 includes a drive gear 125 and a planetary gear mechanism 126.

The drive gear 125 is connected to the second motor 232 and rotates with the drive of the second motor 232. The planetary gear mechanism 126 has a sun gear 127, a planetary gear 128, a planet carrier 129, and an internal gear 130.
The sun gear 127 meshes with the planetary gear 128. The planetary gear 128 is rotatably supported by the planet carrier 129 and can rotate (revolve) around the sun gear 127. The planetary carrier 129 rotates with the rotation (revolution) of the planetary gear 128. The other end side of the other transmission shaft 109 is connected to the planet carrier 129. As a result, the planetary gear 128 is connected to the separation transmission unit 103 via the planetary carrier 129 and the other transmission shaft 109. The internal gear 130 has internal teeth formed on the inner peripheral surface and external teeth formed on the outer peripheral surface. The internal teeth mesh with the planetary gear 128. The external teeth mesh with the drive gear 125.

One end side of the second output shaft 122 is connected to the center of the sun gear 127. The other end of the second output shaft 122 is connected to the fifth transmission gear 123. The sixth transmission gear 124 meshes with the fifth transmission gear 123. The fifth transmission gear 123 and the sixth transmission gear 124 are both bevel gears. The direction of the rotation axis of the fifth transmission gear 123 intersects (orthogonally) the direction of the rotation axis of the sixth transmission gear 124. The center of the sixth transmission gear 124 is connected to the central axis of the second rotating body 420. As a result, the rotational power of the sixth transmission gear 124 is transmitted to the second rotating body 420.

Hereinafter, the operation (operation) of the first power transmission mechanism 501 will be described.
The power from the engine 11 is transmitted to the separation transmission unit 103 via the PTO shaft 19, the connection unit 104, and the transmission shaft 105.
The separation transmission unit 103 separates and transmits the power transmitted from the transmission shaft 105 to one (one transmission shaft 108) and the other (the other transmission shaft 109). That is, the separation transmission unit 103 separates and transmits the power from the PTO shaft 19 to one side and the other side.

The power transmitted from the separation transmission unit 103 to one side (one transmission shaft 108) is transmitted to the first rotating body 410 via the first transmission unit 101. Specifically, the planetary carrier 117 is rotated by the power transmitted to the transmission shaft 108, and the planetary gear 116 and the sun gear 115 are rotated with the rotation of the planetary carrier 117. The rotational power of the sun gear 115 is transmitted to the first rotating body 410 via the first output shaft 119, the third transmission gear 120, and the fourth transmission gear 121.

The power transmitted from the separation transmission unit 103 to the other (the other transmission shaft 109) is transmitted to the second rotating body 420 via the second transmission unit 102. Specifically, on the other hand, the planetary carrier 129 is rotated by the power transmitted to the transmission shaft 109, and the planetary gear 128 and the sun gear 127 are rotated with the rotation of the planetary carrier 129. The rotational power of the sun gear 127 is transmitted to the second rotating body 420 via the second output shaft 122, the fifth transmission gear 123, and the sixth transmission gear 124.

Therefore, the first rotating body 410 and the second rotating body 420 can be rotated by the power transmitted from the engine 11 by the PTO shaft 19.
Next, the operation of the transmission unit 110 will be described.
First, the operation of the first speed change unit 111 will be described.
When the first motor 231 which is the drive source of the first transmission unit 111 is driven, the power from the first motor 231 is transmitted to the external teeth of the internal gear 118 via the drive gear 113. Therefore, when the first motor 231 is driven, the internal gear 118 rotates. The rotation of the internal gear 118 is transmitted to the planetary gear 116 via the internal teeth of the internal gear 118, and the planetary gear 116 rotates. The rotation of the planetary gear 116 is transmitted to the sun gear 115 and then transmitted to the first rotating body 410 via the first output shaft 119, the third transmission gear 120, and the fourth transmission gear 121.

In this way, the power from the first motor 231 is transmitted to the first rotating body 410 via the first speed change unit 111. Therefore, the rotation speed of the first rotating body 410 can be changed according to the shift of the first motor 231.
Next, the operation of the second transmission unit 112 will be described.
When the second motor 232, which is the drive source of the second transmission unit 112, is driven, the power from the second motor 232 is transmitted to the external teeth of the internal gear 130 via the drive gear 125. Therefore, when the second motor 232 is driven, the internal gear 130 rotates. The rotation of the internal gear 130 is transmitted to the planetary gear 128 via the internal teeth of the internal gear 130, and the planetary gear 128 rotates. The rotation of the planetary gear 128 is transmitted to the sun gear 127 and then transmitted to the second rotating body 420 via the second output shaft 122, the fifth transmission gear 123, and the sixth transmission gear 124.

In this way, the power from the second motor 232 is transmitted to the second rotating body 420 via the second transmission unit 112. Therefore, the rotation speed of the second rotating body 420 can be changed according to the shift of the second motor 232.
As described above, the rotation speed of the first rotating body 410 can be changed by the first speed change unit 111, and the rotation speed of the second rotating body 420 can be changed by the second speed change unit 112. Therefore, the rotation speed of the first rotating body 410 and the rotation speed of the second rotating body 420 can be made different as necessary.

FIG. 9 shows a second embodiment of the power transmission mechanism 50. Hereinafter, the power transmission mechanism 50 of the second embodiment is referred to as a "second power transmission mechanism 502".
The second power transmission mechanism 502 receives input from the PTO shaft 19 and power from the motor 23, and transmits the input power to the first rotating body 410 or the second rotating body 420.
The motor 23 includes a first motor 231 and a second motor 232. The first motor 231 and the second motor 232 are driven by the electric power supplied from the generator 15. The generator 15 is driven independently of the PTO shaft 19. The first motor 231 and the second motor 232 are driven independently of each other.

The second power transmission mechanism 502 has a planetary gear mechanism 150 in the second power transmission mechanism 502. The planetary gear mechanism 150 includes a sun gear 151, a planetary gear 152, a planetary carrier 153, and an internal gear 154.
The sun gear 151 meshes with the planetary gear 152. The planetary gear 152 is rotatably supported by the planetary carrier 153 and can rotate (revolve) around the sun gear 151. The planetary carrier 153 rotates with the rotation (revolution) of the planetary gear 152. The internal gear 154 meshes with the planetary gear 152.

Hereinafter, the planetary gear mechanism 150 will be referred to as a "first planetary gear mechanism 150" for convenience in order to distinguish it from another planetary gear mechanism 172 described later. Further, the sun gear 151, the planetary gear 152, the planet carrier 153, and the internal gear 154 are referred to as a first sun gear 151, a first planetary gear 152, a first planet carrier 153, and a first internal gear 154, respectively.
The second power transmission mechanism 502 has an input transmission unit 140. The input transmission unit 140 transmits the power from the PTO shaft 19 to the first planetary gear mechanism 150. The input transmission unit 140 has a first gear 141, a second gear 142, and a first transmission shaft 143.

The first gear 141 rotates with the drive of the PTO shaft 19. The power from the PTO shaft 19 is transmitted to the first gear 141 via the second shaft 146, which will be described later. The second gear 142 meshes with the first gear 141, and rotates in the direction opposite to the first gear 141 as the first gear 141 rotates. The first transmission shaft 143 connects the second gear 142 and the first planet carrier 153, and transmits the rotation of the second gear 142 to the first planet carrier 153. As a result, the first planet carrier 153 rotates (revolves) around the first sun gear 151 as the second gear 142 rotates.

The second power transmission mechanism 502 has an output shaft 155.
The output shaft 155 outputs power from the first planetary gear mechanism 150.
One end side of the output shaft 155 is connected to the center of the first internal gear 154 of the first planetary gear mechanism 150. The other end side of the output shaft 155 is connected to a separation transmission unit 156, which will be described later. As a result, the power output from the first planetary gear mechanism 150 to the output shaft 155 is transmitted to the separation transmission unit 156.

The power from the first motor 231 is transmitted to the second power transmission mechanism 502 via the first shaft 145.
One end side of the first shaft 145 is connected to the first motor 231. The other end of the first shaft 145 is connected to the center of the first sun gear 151 of the first planetary gear mechanism 150. As a result, the power transmitted from the first motor 231 to the first shaft 145 is input to the first planetary gear mechanism 150.

The second shaft 146 transmits the power from the PTO shaft 19 to the second power transmission mechanism 502.
One end side of the second shaft 146 is connected to the PTO shaft 19 via a connecting portion 147 such as a shaft joint. As a result, the power of the second drive source 12 is transmitted to the second shaft 146 via the PTO shaft 19 and the connecting portion 147. The other end of the second shaft 146 is connected to the first gear 141 of the input transmission unit 140. As a result, the other end of the second shaft 146 is connected to the first planetary carrier 153 of the first planetary gear mechanism 150 via the input transmission unit 140. Therefore, the power transmitted from the PTO shaft 19 to the second shaft 146 is input to the first planetary gear mechanism 150 via the input transmission unit 140.

The second power transmission mechanism 502 has a separation transmission unit 156.
The separation transmission unit 156 separates and transmits the power output from the output shaft 155 to one side and the other side. The separation transmission unit 156 has a first transmission gear 157, a second transmission gear 158, one transmission shaft 159, and the other transmission shaft 160.
The other end side of the output shaft 155 is connected to the center of the first transmission gear 157. The second transmission gear 158 meshes with the first transmission gear 157. The gears (first transmission gear 157, second transmission gear 158) constituting the separation transmission unit 156 are all bevel gears. The direction of the rotation axis of the first transmission gear 157 intersects the direction of the rotation axis of the second transmission gear 158.

One end side of one transmission shaft 159 and one end side of the other transmission shaft 160 are connected to the second transmission gear 158, respectively. One transmission shaft 159 and the other transmission shaft 160 extend from the center of the second transmission gear 158 toward opposite sides.
As a result, the power output from the output shaft 155 is separately transmitted from the second transmission gear 158 to the one transmission shaft 159 (one) and the other transmission shaft 160 (the other) in the separation transmission unit 156.

The second power transmission mechanism 502 has a first power transmission unit 161.
The first power transmission unit 161 transmits the power transmitted from the separation transmission unit 156 to one side (one transmission shaft 159) to the first rotating body 410. The first power transmission unit 161 has a transmission unit 170, a transmission shaft 162, a third transmission gear 163, and a fourth transmission gear 164.
The speed change unit 170 changes the rotation speed of the first rotating body 410 or the second rotating body 420 according to the speed change of the second motor 232. The transmission unit 170 has a planetary gear mechanism (hereinafter referred to as “second planetary gear mechanism”) 172 and a drive gear 171.

The second planetary gear mechanism 172 includes a second sun gear 173, a second planetary gear 174, a second planetary carrier 175, and a second internal gear 176.
The second sun gear 173 meshes with the second planetary gear 174. The second sun gear 173 is connected to the separation transmission unit 156. Specifically, the other end side of the transmission shaft 159 is connected to the center of the second sun gear 173. The second planetary gear 174 meshes with the second sun gear 173. The second planetary gear 174 is rotatably supported by the second planetary carrier 175 and can rotate (revolve) around the second sun gear 173. The second planetary carrier 175 rotates with the rotation (revolution) of the second planetary gear 174.

The second internal gear 176 has internal teeth formed on the inner peripheral surface and external teeth formed on the outer peripheral surface. The internal teeth mesh with the second planetary gear 174. The external teeth mesh with a drive gear 171 that is rotated by power from the third drive source 44.
One end side of the transmission shaft 162 is connected to the second planet carrier 175. The other end of the transmission shaft 162 is connected to the center of the third transmission gear 163. The fourth transmission gear 164 meshes with the third transmission gear 163. The direction of the rotation axis of the fourth transmission gear 164 intersects with the direction of the rotation axis of the third transmission gear 163. The center of the fourth transmission gear 164 is connected to the central axis of the first rotating body 410. As a result, the rotational power of the fourth transmission gear 164 is transmitted to the first rotating body 410.

The second sun gear 173 can transmit power to the second rotating body 420 via the separation transmission unit 156. The second planetary gear 174 can transmit power to the first rotating body 410 via the second planet carrier 175 and the transmission shaft 162.
One end side of the transmission shaft 162 is connected to the center of the second sun gear 173, the other end side of the transmission shaft 162 is connected to the center of the third transmission gear 163, and one transmission shaft 159 is connected to the second planet carrier 175. The other end side may be connected, and one end side of the one-side transmission shaft 159 may be connected to the second transmission gear 158. In this case, the second planetary gear 174 can transmit power to the second rotating body 420 via the second planet carrier 175 and the separation transmission unit 156, and the second sun gear 173 makes the first rotation via the transmission shaft 162. Power can be transmitted to the body 410.

The second power transmission mechanism 502 has a second power transmission unit 177.
The second power transmission unit 177 can transmit the power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) to the second rotating body 420.
The second power transmission unit 177 has a switching unit 178. The switching unit 178 has a first state in which the power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) is transmitted to the second rotating body 420, and a second state in which the power is not transmitted to the second rotating body 420. It is possible to switch to. The switching unit 178 is composed of, for example, a clutch or the like that can be switched by an operation lever or the like. Preferably, the switching unit 178 is composed of an electric clutch, but may be composed of a mechanical clutch.

The second power transmission unit 177 has a fifth transmission gear 179 and a sixth transmission gear 180. The gears (fifth transmission gear 179, sixth transmission gear 180) constituting the second power transmission unit 177 are all bevel gears.
The other end side of the other transmission shaft 160 is connected to the center of the fifth transmission gear 179 via a switching portion 178. When the switching unit 178 is in the first state, the power from the other transmission shaft 160 is transmitted to the fifth transmission gear 179. When the switching unit 178 is in the second state, the power from the other transmission shaft 160 is not transmitted to the fifth transmission gear 179. The sixth transmission gear 180 meshes with the fifth transmission gear 179. The direction of the rotation axis of the sixth transmission gear 180 intersects with the direction of the rotation axis of the fifth transmission gear 179. The center of the sixth transmission gear 180 is connected to the central axis of the second rotating body 420.

When the switching unit 178 is in the first state, the power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) is the second through the switching unit 178, the fifth transmission gear 179, and the sixth transmission gear 180. It is transmitted to the rotating body 420. When the switching unit 178 is in the second state, the power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) is cut off by the switching unit 178 to the fifth transmission gear 179, and the second rotation. Not transmitted to body 420.

The switching unit 178 may be provided in the first power transmission unit 161 instead of being provided in the second power transmission mechanism 20. The speed change unit 170 may be provided in the second power transmission mechanism 20 instead of being provided in the first power transmission unit 161.
Further, the second power transmission unit 177 preferably has a switching unit 178, but may not have a switching unit 178. When the switching unit 178 is not provided, the other end side of the other transmission shaft 160 is directly connected to the center of the fifth transmission gear 179.

Hereinafter, the operation (operation) of the second power transmission mechanism 502 will be described.
The power from the first motor 231 is input to the planetary gear mechanism 150 via the first shaft 145. The power from the engine 11 is input to the first planetary gear mechanism 150 via the PTO shaft 19, the connection unit 147, the second shaft 146, and the input transmission unit 140.
The power input to the first planetary gear mechanism 150 is output from the output shaft 155 and transmitted to the separation transmission unit 156. The separation transmission unit 156 separates and transmits the power output from the output shaft 155 to one (one transmission shaft 159) and the other (the other transmission shaft 160). That is, the separation transmission unit 156 separates and transmits the power from the first motor 231 and the power from the engine 11 to one and the other.

The power transmitted from the separate transmission unit 156 to one side (one transmission shaft 159) is transmitted to the first rotating body 410 via the first power transmission unit 161. The power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) is transmitted to the second rotating body 420 via the second power transmission unit 177 by switching the switching unit 178 to the first state.
Therefore, the first rotating body 410 and the second rotating body 420 can be rotated by the power from the first motor 231. Further, the first rotating body 410 and the second rotating body 420 can be rotated by the power from the engine 11. That is, the power of either the first motor 231 or the engine 11 can be used to rotate the first rotating body 410 and the second rotating body 420. Further, the powers of both the first motor 231 and the engine 11 can be used to rotate the first rotating body 410 and the second rotating body 420. In addition, since the first motor 231 can change gears, the rotation speeds of the first rotating body 410 and the second rotating body 420 can be changed by shifting the first motor 231.

Further, the speed change unit 170 can make the rotation speed of the first rotating body 410 different from the rotation speed of the second rotating body 420.
Hereinafter, the operation of the speed change unit 170 will be described.
When the second motor 232 is driven, the power from the second motor 232 is transmitted to the external teeth of the second internal gear 176 via the drive gear 171. Therefore, when the second motor 232 is driven, the second internal gear 176 rotates. The rotation of the second internal gear 176 is transmitted to the second planetary gear 174 via the internal teeth of the second internal gear 176, and the second planetary gear 174 rotates. The second sun gear 173 rotates with the rotation of the second planetary gear 174, and the power of the rotation is transmitted to the first rotating body 410 via the transmission shaft 162, the third transmission gear 163, and the fourth transmission gear 164. Will be done.

In this way, the power from the second motor 232 is transmitted to the first rotating body 410 via the transmission unit 170. Therefore, the rotation speed of the first rotating body 410 can be changed according to the shift of the second motor 232. Thereby, the rotation speed of the first rotating body 410 and the rotation speed of the second rotating body 420 can be made different.
Further, the transmission unit 170 may be provided in the second power transmission unit 177, and the power from the second motor 232 may be transmitted to the transmission unit 170 (external teeth of the second internal gear 176) of the second power transmission unit 177. good. When this configuration is adopted, the rotation speed of the second rotating body 420 can be changed according to the shift of the second motor 232. Also with this configuration, the rotation speed of the first rotating body 410 and the rotation speed of the second rotating body 420 can be made different.

Hereinafter, the operation of the switching unit 178 will be described.
By switching the switching unit 178 to the second state, the power transmitted from the separation transmission unit 156 to the other (the other transmission shaft 160) is not transmitted to the second rotating body 420. Therefore, it is possible to stop the second rotating body 420 and drive only the first rotating body 410 while the second driving source 12 is being driven. That is, the second rotating body 420 can be stopped without stopping the rotation of the PTO shaft 19.

If the switching unit 178 is not provided and the second rotating body 420 is stopped to drive only the first rotating body 410, the rotation of the first motor 232 and the PTO shaft 19 is stopped and the second motor 232 is started. Must be driven. That is, the rotation of the PTO axis 19 must be stopped. On the other hand, when the switching unit 178 is provided, it is not necessary to stop the rotation of the PTO shaft 19 as described above.

Further, when the switching unit 178 is not provided, the first rotating body 410 must be driven by the power of the second motor 232, so that the output of the second motor 232 must be increased. On the other hand, when the switching unit 178 is provided, the second motor 232 can be used only for shifting, so that the output of the second motor 232 can be reduced.
Next, the work management system 100 will be described. The work management system 100 is a system for managing the work executed by the above-mentioned work machine 1.

As shown in FIG. 7, the work management system 100 includes a generator 15, a motor 23, a detection device 70, and a management device 80. Since the configurations of the generator 15 and the motor 23 are as described above, the description thereof will be omitted.
The detection device 70 detects information related to the work device (spraying device) 3 operated by the power from the generator 15. The detection device 70 includes a height detection device 71, a vehicle speed detection device 72, a wind speed detection device 73, a posture detection device 74, and a position detection device 75. The height detection device 71, the vehicle speed detection device 72, the wind speed detection device 73, the posture detection device 74, and the position detection device 75 are provided in the tractor 2 or the work device 3. The tractor 2 or the working device 3 may be provided with at least one of a height detection device 71, a vehicle speed detection device 72, a wind speed detection device 73, a posture detection device 74, and a position detection device 75.

The height detection device 71 is a height sensor that detects the height of the rotating body (disk) 40 from the ground. As the height sensor, for example, an ultrasonic type level sensor, a microwave type level sensor, a laser type level sensor, or the like can be used. The height sensor may directly detect the height of the rotating body, or the height of a portion different from the rotating body (for example, the frame 35, the connecting device 6, a part of the tractor 2, etc.). , And the height of the rotating body may be indirectly detected from the difference in height between the portion and the rotating body. Therefore, the height detecting device 71 is preferably provided in the working device 3, but may be provided in the tractor 2.

The vehicle speed detection device 72 is a speed sensor that detects the traveling speed (vehicle speed) of the working machine 1. The speed sensor may detect the traveling speed of the tractor 2, or may detect the traveling speed (moving speed) of the working device 3 towed by the tractor 2. Therefore, the vehicle speed detecting device 72 is preferably provided on the tractor 2, but may be provided on the working device 3. As the speed sensor, for example, a pickup type vehicle speed sensor that measures the traveling speed from the rotation speed of the input shaft of the rear wheel differential device 14 can be used, but the speed sensor is not limited thereto.

The wind speed detection device 73 is a wind speed sensor that detects the speed (wind speed) and direction of the wind received by the work device 3. The wind speed sensor may directly detect the speed and direction of the wind received by the working device 3, or detect the speed and direction of the wind received by the tractor 2 and detect the speed and direction in the working device 3. It may be regarded as the speed and direction of the wind received by. Therefore, the wind speed detection device 73 is preferably provided in the working device 3, but may be provided in the tractor 2.

The posture detection device 74 is a posture sensor that detects the posture of the work device 3. The posture sensor is, for example, a tilt sensor that detects the tilt of the work device 3. The tilt sensor detects the tilt (difference in height between the left portion and the right portion) of the work device 3 in the vehicle body width direction. The tilt sensor may directly detect the tilt of the work device 3, or may detect the tilt of the tractor 2 and calculate the tilt of the work device 3 from the tilt. Therefore, the wind speed detection device 73 is preferably provided in the spraying device 3, but may be provided in the tractor 2.

The position detection device 75 is a positioning device that detects the position of the work device 3, and detects the position of the work device 3 by receiving a satellite signal from a positioning satellite such as GPS. The positioning device may be one that directly detects the position of the working device 3, or may be one that detects the position of the tractor 2 and calculates the position of the working device 3 from the position. Therefore, the position detecting device 75 is preferably provided in the working device 3, but may be provided in the tractor 2.

The management device 80 is composed of a computer. The management device 80 may be provided on the tractor 2 or the working device 3. Further, the management device 80 may be provided on both the tractor 2 and the working device 3. When the management device 80 is provided in both the tractor 2 and the work device 3, a part of the configuration (function) of the management device 80 is provided in the tractor 2 and the remaining part is provided in the work device 3 to transmit and receive information to and from each other. Can be configured as possible.

The management device 80 includes an information acquisition unit 81, a work management unit 82, and a control unit 83. The information acquisition unit 81, the work management unit 82, and the control unit 83 are composed of electronic / electrical parts (CPU, memory, etc.), programs, and the like provided in the management device 80.
The information acquisition unit 81 acquires operation information at the time of operation of the work device (spraying device) 3 operated by the power from the generator 15. The operation information is, for example, height information regarding the height of the work device 3, speed information regarding the speed of the work machine 1, posture information regarding the posture of the work device 3, position information regarding the position of the work device 3, and the like. In addition, the information acquisition unit 81 can also acquire wind speed information regarding the wind speed (wind speed) and direction of the wind received by the work device 3. The operation information and the wind speed information (hereinafter collectively referred to as "operation information and the like") are detected by the detection device 70 and then transmitted to the management device 80 via the bus. The information acquisition unit 81 of the management device 80 acquires the operation information and the like sent from the detection device 70.

The information acquisition unit 81 includes a height information acquisition unit 811, a vehicle speed information acquisition unit 812, a wind speed information acquisition unit 813, an attitude information acquisition unit 814, and a position information acquisition unit 815. The height information acquisition unit 811 acquires the height information detected by the height detection device 71. The vehicle speed information acquisition unit 812 acquires vehicle speed information detected by the vehicle speed detection device 72. The wind speed information acquisition unit 813 acquires the wind speed information detected by the wind speed detection device 73. The posture information acquisition unit 814 acquires the posture information detected by the posture detection device 74. The position information acquisition unit 815 acquires the position information detected by the position detection device 75.

The work management unit 82 manages the work in the work device 3 based on the operation information or the like acquired by the information acquisition unit 81. Specifically, the work management unit 82 displays the operation information or the like acquired by the information acquisition unit 81 on the display device 90. The display device 90 is a liquid crystal display or the like. The display device 90 is provided, for example, in front of the driver's seat 7 of the tractor 2, but may be provided at another position of the tractor 2 or may be provided in the working device 3. Further, the display device 90 and the work management unit 82 may be integrated or separate. The operation information and the like displayed on the display device 90 may be all or a part of the above-mentioned operation information and the like. Further, in addition to the operation information and the like, the information of the field where the work machine 1 is working can be displayed on the display device 90. For example, the control unit 83 determines which position in the field the working machine 1 is traveling based on the map information of the field (information indicating the position of the field, the boundary line, etc.) stored in the memory of the management device 80 in advance. The image showing the above can be displayed on the display device 90 by a method such as displaying the work machine 1 on the map of the field.

The control unit 83 controls the drive of the work device 3 based on the operation information or the like acquired by the information acquisition unit 81. Specifically, the control unit 83 controls the rotation speed of the rotating body (disk) 40 based on the operation information or the like acquired by the information acquisition unit 81. More specifically, the control unit 83 is a rotating body based on at least one or more of the operation information (height information, vehicle speed information, wind speed information, attitude information, position information) acquired by the information acquisition unit. The rotation speed of 40 is controlled. When the working device (spraying device) 3 includes a plurality of rotating bodies 40, the control unit 83 may individually control the rotation speeds of the plurality of rotating bodies 40, or may control the rotation speeds of the plurality of rotating bodies 40. It may be controlled in conjunction with each other. When the rotation speeds of the plurality of rotating bodies 40 are individually controlled, the rotation speeds of the plurality of rotating bodies 40 may be different from each other, or the rotation speeds of the plurality of rotating bodies 40 may all be the same.

The rotation speed of the rotating body 40 can be controlled by controlling the rotation speed of at least one of the motor 23 and the PTO shaft 19. The control unit 83 can control the rotation speed of the motor 23 by transmitting a control signal to the inverter 22. Further, the control unit 83 can control the rotation speed of the rotating body 40 by transmitting a control signal to the PTO transmission unit 20 to shift the PTO shaft 19. That is, the control unit 83 can control the rotation speed of the rotating body 40 by shifting the motor 23, or can control the rotation speed of the rotating body 40 by shifting the PTO shaft 19. Further, the control unit 83 can also control to switch between the rotation and the stop of the PTO shaft 19 by switching between the connected state and the disconnected state of the PTO clutch 15.

Hereinafter, the control of the rotation speed of the rotating body 40 by the control unit 83 will be further described.
When the control unit 83 controls the rotation speed of the rotating body 40 based on the height information, for example, it is controlled to increase the rotation speed of the rotating body 40 as the height of the rotating body 40 from the ground decreases. do. This prevents the spraying distance of the sprayed material from being reduced when the height of the rotating body 40 is lowered. That is, even if the height of the rotating body 40 changes, the spraying distance of the sprayed material can be made substantially constant.

When the control unit 83 controls the rotation speed of the rotating body 40 based on the vehicle speed information, for example, as the vehicle speed increases, the rotation speed of the rotating body 40 is controlled to increase. This prevents the amount of sprayed material per unit area from being reduced when the speed of the tractor 2 is increased. That is, even if the speed of the tractor 2 changes, the amount of sprayed material per unit area can be made substantially constant.

When the control unit 83 controls the rotation speed of the rotating body 40 based on the wind speed information, for example, the rotation speed of the rotating body 40 is increased as the speed of the wind in the direction opposite to the spraying direction of the rotating body 40 increases. To control. Further, it is possible to control the rotation speed of the rotating body 40 to decrease as the speed of the wind in the same direction as the spraying direction of the rotating body 40 increases. As a result, even if the direction and speed of the wind change, the spraying distance of the sprayed material can be made substantially constant.

When the control unit 83 controls the rotation speed of the rotating body 40 based on the attitude information, for example, when the working device 3 is tilted to the right (when the right is lowered), the rotating body on the right side (first rotating body). The speed of 410) is made faster than the rotation speed of the left rotating body (second rotating body 420), and when the working device 3 is tilted to the left (when the left is lowered), the left rotating body (second rotation). The speed of the body 420) is controlled to be faster than the rotation speed of the right rotating body (first rotating body 410). That is, the rotation speed of the rotating body on the lower side can be controlled to be faster than the rotation speed of the rotating body on the high side. As a result, even if the posture of the working device 3 changes, the spraying distance of the sprayed material can be made substantially constant.

When the control unit 83 controls the rotation speed of the rotating body 40 based on the position information, for example, when the current position where the tractor 2 is traveling is near the boundary line of the field, the rotation speed of the rotating body 40 is set. It is controlled to decrease or set to 0 (stop). When there are a plurality of rotating bodies 40, the rotation speed of the rotating bodies on the side close to the boundary line of the field is controlled to be reduced or set to 0 (stop). This makes it possible to avoid spraying the sprayed material beyond the boundary line. The boundary line is, for example, a line indicating the edge of the field (a boundary line with a road, a boundary line with a building, a boundary line with another person's field, etc.), a boundary line between different crops, and the like.

As shown in FIG. 7, the work management system 100 further includes a height adjusting mechanism 91 and a posture adjusting mechanism 92.
The height adjusting mechanism 91 includes a lift cylinder 63 of the coupling device 6 and an electromagnetic control valve connected to the lift cylinder 63. Upon receiving the control signal from the control unit 83, the electromagnetic control valve connected to the lift cylinder 63 extends or shortens the rod of the first lift cylinder 63L and the rod of the second shift cylinder 63R. As a result, the working device 3 connected to the connecting device 6 rises or falls, so that the height of the rotating body 40 can be adjusted.

More specifically, the height adjusting mechanism 91 adjusts the height of the rotating body 40 from the ground so that the height is always constant. For example, the control unit 83 calculates the difference between the height detected by the height detecting device 71 and the target height stored in the memory of the management device 80 in advance, and the lift cylinder 63 so that the difference approaches 0. The height of the rotating body 40 is adjusted by driving the rotating body 40. By adjusting the height of the rotating body 40 from the ground to be always constant by the height adjusting mechanism 91, the spraying distance of the sprayed object by the rotating body 40 can be made substantially constant. This makes it possible to suppress variations in the amount of spraying in the field.

The attitude adjusting mechanism 92 includes a lift cylinder 63 of the coupling device 6 and an electromagnetic control valve connected to the lift cylinder 63. When the electromagnetic control valve connected to the lift cylinder 63 receives the control signal from the control unit 83, the electromagnetic control valve extends or shortens the rod of the first lift cylinder 63L or the second lift cylinder 63R. As a result, the inclination of the work device 3 connected to the connecting device 5 in the vehicle body width direction (difference between the height of the left portion and the height of the right portion of the work device 3) changes, so that the posture of the work device 3 is adjusted. be able to.

More specifically, the posture adjusting mechanism 92 adjusts the work device 3 so that the inclination (inclination with respect to the horizontal plane) becomes small. The control unit 83 drives the first lift cylinder 63L or the second lift cylinder 63R so that the inclination (difference in height between the left portion and the right portion) of the work device 3 detected by the attitude detection device 74 approaches 0. By doing so, the posture of the working device 3 is adjusted. By adjusting the posture adjusting mechanism 92 so that the inclination (inclination with respect to the horizontal plane) of the working device 3 becomes small, the spraying distance of the sprayed material due to the rotation of the rotating body 40 can be made substantially constant. This makes it possible to suppress variations in the amount of spraying in the field.

The work management method can be executed from the work management system 100 described above.
The work management method is based on an information acquisition step in which the information acquisition unit 81 acquires operation information at the time of operation of the work device 3 operated by power from the generator 15, and an operation information acquired by the information acquisition unit 81. A work management step for managing the work in 3 and a control step for controlling the work device 3 based on the operation information acquired by the information acquisition unit 81 are provided.

In the information acquisition step, the information acquisition unit 81 may acquire wind speed information in addition to the operation information. In this case, in the control step, the work device 3 can be controlled based on the wind speed information acquired by the information acquisition unit 81.
The information acquisition step is executed by the information acquisition unit 81. The work management step is executed by the work management unit 82. The control step is executed by the control unit 83. Since the method of information acquisition by the information acquisition unit 81, the method of work management by the work management unit 82, and the method of control by the control unit 83 are as described above, the description thereof will be omitted.

According to this work management method, it is possible to manage the work and control the work device 3 in the work machine 1 provided with the generator 15 that transmits power to the work device 3.
Although the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Work equipment 3 Work equipment 10 Mission case 15 Generator 19 PTO shaft 25 Structure 23 Motor 40 Rotating body 71 Height detection device 72 Vehicle speed detection device 73 Wind speed detection device 74 Attitude detection device 75 Position detection device 811 Height information acquisition unit 812 Vehicle speed information acquisition unit 813 Wind speed information acquisition unit 814 Attitude information acquisition unit 815 Position information acquisition unit 81 Information acquisition unit 82 Work management unit 83 Control unit 90 Display device 91 Height adjustment mechanism 92 Attitude adjustment mechanism 100 Work management system

Claims (9)

A generator mounted on the structure provided in the mission case of the work machine and driven by the power transmitted from the PTO shaft to transmit the power to the work equipment provided in the work machine.
An information acquisition unit that acquires operation information when the work device operated by power from the generator is operating, and an information acquisition unit.
A work management unit that manages work in the work device based on the operation information acquired by the information acquisition unit, and a work management unit.
A control unit that controls the work device based on the operation information acquired by the information acquisition unit, and
A motor driven by power from the generator and
Height detector and
Height adjustment mechanism and
Equipped with
The working device has a rotating body that sprays a sprayed object by rotating by receiving power from the motor.
The height detecting device detects the height of the rotating body from the ground and determines the height of the rotating body from the ground.
The height adjusting mechanism adjusts the height of the rotating body based on the height detected by the height detecting device.
The information acquisition unit acquires height information regarding the height detected by the height detection device as the operation information, and obtains the height information.
The control unit is a work management system that controls the rotation speed of the rotating body based on the height information acquired by the information acquisition unit. A generator mounted on the structure provided in the mission case of the work machine and driven by the power transmitted from the PTO shaft to transmit the power to the work equipment provided in the work machine.
An information acquisition unit that acquires operation information when the work device operated by power from the generator is operating, and an information acquisition unit.
A work management unit that manages work in the work device based on the operation information acquired by the information acquisition unit, and a work management unit.
A control unit that controls the work device based on the operation information acquired by the information acquisition unit, and
A motor driven by power from the generator and
A power transmission mechanism capable of transmitting power from the PTO shaft and power from the motor to the work device, and
A PTO transmission that can change the rotation speed of the PTO axis,
Equipped with
The working device has a rotating body that sprays a sprayed object by rotating by receiving power from the motor.
The control unit is a work management system that controls the rotation speed of the rotating body by transmitting a control signal to the PTO transmission unit to shift the PTO axis based on the operation information. A generator mounted on the structure provided in the mission case of the work machine and driven by the power transmitted from the PTO shaft to transmit the power to the work equipment provided in the work machine.
An information acquisition unit that acquires operation information when the work device operated by power from the generator is operating, and an information acquisition unit.
A work management unit that manages work in the work device based on the operation information acquired by the information acquisition unit, and a work management unit.
A control unit that controls the work device based on the operation information acquired by the information acquisition unit, and
A motor driven by power from the generator and
A posture detection device that detects the posture of the work device, and
A posture adjustment mechanism that adjusts the posture of the work device based on the posture detected by the posture detection device, and
Equipped with
The working device has a rotating body that sprays a sprayed object by rotating by receiving power from the motor.
The information acquisition unit acquires posture information regarding the posture of the work device detected by the posture detection device as the operation information.
The control unit is a work management system that controls the rotation speed of the rotating body based on the posture information acquired by the information acquisition unit. A generator mounted on the structure provided in the mission case of the work machine, driven independently of the PTO axis, and transmitting power to the work equipment provided in the work machine.
An information acquisition unit that acquires operation information when the work device operated by power from the generator is operating, and an information acquisition unit.
A work management unit that manages work in the work device based on the operation information acquired by the information acquisition unit, and a work management unit.
A control unit that controls the work device based on the operation information acquired by the information acquisition unit, and
A motor driven by power from the generator and
Height detector and
Height adjustment mechanism and
Equipped with
The working device has a rotating body that sprays a sprayed object by rotating by receiving power from the motor.
The height detecting device detects the height of the rotating body from the ground and determines the height of the rotating body from the ground.
The height adjusting mechanism adjusts the height of the rotating body based on the height detected by the height detecting device.
The information acquisition unit acquires height information regarding the height detected by the height detection device as the operation information, and obtains the height information.
The control unit is a work management system that controls the rotation speed of the rotating body based on the height information acquired by the information acquisition unit. A generator mounted on the structure provided in the mission case of the work machine, driven independently of the PTO axis, and transmitting power to the work equipment provided in the work machine.
An information acquisition unit that acquires operation information when the work device operated by power from the generator is operating, and an information acquisition unit.
A work management unit that manages work in the work device based on the operation information acquired by the information acquisition unit, and a work management unit.
A control unit that controls the work device based on the operation information acquired by the information acquisition unit, and
A motor driven by the power from the generator and
A posture detection device that detects the posture of the work device, and
A posture adjustment mechanism that adjusts the posture of the work device based on the posture detected by the posture detection device, and
Equipped with
The working device has a rotating body that sprays a sprayed object by rotating by receiving power from the motor.
The information acquisition unit acquires posture information regarding the posture of the work device detected by the posture detection device as the operation information.
The control unit is a work management system that controls the rotation speed of the rotating body based on the posture information acquired by the information acquisition unit. The work management system according to any one of claims 1 to 5 , wherein the work management unit has a display device for displaying the operation information. The work management system according to any one of claims 1 to 6 , wherein the structure is a connecting device capable of connecting a working device driven by power transmitted from the PTO axis. The connecting device has a first portion attached to the mission case, a second portion to which the working device can be attached, and a through hole for projecting the PTO shaft when the first portion is attached to the mission case. The work management system according to claim 7 , further comprising a third portion formed and to which the generator is mounted. The work management system according to any one of claims 1 to 8 , wherein the output voltage of the generator is 60 V or less.

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