JP2004175160A - Movable agricultural machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve manipulatability by making a work possible in a wide free space. <P>SOLUTION: A seat 28 of a tractor 10 can be raised up to a working state and laid down to a laid state laid toward the front of a machine frame. A rotary apparatus 38 supported on the rear part of a travelling machine frame 16 is controlled so as to ascend and descend by a hydraulic cylinder (not shown) via a control unit 116. Because the control unit 116 is arranged in back of the seat 28, when the seat 28 is laid down toward the front of the machine frame, a space 124 in back of the seat 28 is opened, Because the control unit 116 is exposed when the seat 28 is laid down toward the front of the machine frame, the final control element 122 of the control unit 116 can be manipulated in the wide free space. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile agricultural machine such as a tractor, and more particularly to a mobile agricultural machine that controls the movement of a working unit supported by a traveling machine so as to be able to move up and down by a control unit disposed near a seat.
[0002]
[Prior art]
For example, in a tractor as a mobile agricultural machine, Patent Literature 1 discloses horizontal control and steering that maintain a tilt angle of a rotary device attached to a rear portion of a tractor in the left-right direction irrespective of a tilt of a traveling body. A control unit that performs various automatic controls such as auto-brake turning control that automatically brakes the rear wheel inside the turn and makes a small turn when the steering wheel is steered beyond a predetermined angle, extends upward from the floor plate behind the seat A technique is disclosed in which the control unit is mounted on a rear panel, the upper part of the control unit is covered with an upper cover, and the rear and lower parts are protected with a rear cover.
[0003]
According to Patent Literature 1, the heat resistance is improved as compared with the case where the control unit is arranged in the engine room, and the control unit is covered with the upper cover and the rear cover, so that the waterproofness is excellent. Things.
[0004]
Further, Patent Literature 2 discloses a technology in which a rear wall surface protruding upward from a floor plate behind a seat is provided, and a control unit including a CPU is provided below the rear wall surface. The control unit is connected to the sensors by a wire harness, and performs automatic level control and the like of a rotary device mounted on the rear of the tractor so as to be able to move up and down based on detection signals from the sensors.
[0005]
[Patent Document 1]
JP-A-8-10881 (pages 3 to 4, FIG. 1)
[Patent Document 2]
JP-A-9-39686 (pages 2 to 3, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, according to Patent Document 1 described above, since the control unit is disposed on the rear panel that is disposed rearward with a small space between the seat and the seat, the seat is not located at the time of initial setting or maintenance of the control unit. Work must be performed in a narrow space between the rear panel and the workability is lacking.In addition, since the control unit is mounted almost vertically to the floor, the visibility of the unit operation unit is not good. There was a problem that operability was poor.
[0007]
According to Patent Document 2, the seat is supported from below by front and rear mounting legs, and the control unit is mounted at a low position behind the rear mounting legs, so that the seat is moved forward. Even when the control unit is tilted, the control unit is not exposed, so that the work is performed in the narrow space between the mounting leg below the seat and the rear wall surface at the time of initial setting and maintenance of the control unit, as described above. There is a problem that work must be performed and workability is lacking.
[0008]
The present invention has been made to solve such a problem, and an object of the present invention is to improve operability by enabling work in a large empty space, and to add functions of a control unit. It is an object of the present invention to provide a mobile agricultural machine capable of coping with an increase in unit size accompanying the above.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is arranged between left and right fenders (27) that cover left and right rear wheels (14), and is capable of being turned up and down between a use state and a falling state in front of the fuselage. (28) and a working unit (38) supported on the traveling body (16) so as to be able to move up and down, and the working unit (38) is provided with a control unit (116) arranged near the seat (28). In a mobile agricultural machine (10) controlled to move by
The control unit (116) is disposed behind the seat (28), and the space (124) behind the seat (28) is opened with the seat (28) lying down in front of the fuselage. (116) is exposed.
[0010]
According to a second aspect of the present invention, in the mobile agricultural machine according to the first aspect, the control unit (116) is attached such that an operation surface of the control unit (116) faces forward of the fuselage.
[0011]
According to a third aspect of the present invention, in the mobile agricultural machine according to the first or second aspect, the control unit (116) includes a lower part on a mounting part (112) erected from a body support surface behind the seat (28). The upper part is mounted so as to be inclined rearward of the fuselage.
[0012]
According to a fourth aspect of the present invention, in the mobile agricultural machine according to any one of the first to third aspects, a protection member (114) that covers a periphery of the control unit (116) is provided.
[0013]
[Action]
As described above, according to the present invention, the control unit (116) is disposed behind the seat (28) which can be turned up and down between the use state and the state of falling forward, and the seat (28) is placed forward of the body. The space (124) behind the seat (28) is opened in the lying state, and the control unit (116) is exposed, so that the operation unit (122) of the control unit (116) in a wide space is provided. Work can be performed, thereby improving operability. In addition, by arranging the control unit (116) behind the seat (28), a sufficient mounting space is secured, so that it is easy to cope with an increase in unit size due to addition of functions of the control unit (116). It becomes possible.
[0014]
In addition, the code | symbol in a parenthesis mentioned above is for contrast of drawing, and does not limit this invention at all.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is an external perspective view of a tractor as a mobile agricultural machine to which the present invention is applied. The tractor 10 has a traveling body 16 supported by a front wheel 12 and a rear wheel 14, and has a front hood 18. An engine 20 is mounted in the inside, and a transmission case 22 is attached below the engine 20 integrally with the engine. The steering portion 24 behind the hood 18 has a steering wheel (hereinafter referred to as “steering handle”) 26 for steering and a substantially central portion between left and right fender frames 27, 27 covering the rear wheel 14. A seat 28 and a clutch pedal 30 extending upward from the step surface are provided. Further, a main transmission lever 32 and an auxiliary transmission lever 34 are provided on the left fender frame 27, a safety frame 36 is attached to the rear of the seat 28, and a working machine such as a rotary device 38 is provided at the rear of the aircraft. It is supported to be able to move up and down freely.
[0017]
The power of the engine 20 is transmitted to the transmission case 22, and a sub-transmission mechanism (not shown) for traveling in the transmission case 22 is operated by the sub-transmission lever 34 to change the speed. Power transmitted to the left and right rear wheels 14 via gears in the vehicle (not shown) and branched from the auxiliary transmission mechanism is transmitted through a propeller shaft (not shown), gears in the front axle case 40, and the like. The power is transmitted to the left and right front wheels 12 via the front wheel.
[0018]
FIG. 2 is a front side view of the tractor 10, and an instrument panel 44 is provided in front of the steering section 24 and in front of the steering mast 42. A fuel tank 46 having a fuel supply port 46a is disposed between the bonnet 18 and the control section 24. The refueling port 46a projects obliquely upward from substantially the front of the central portion of the instrument panel 44. The diameter of the refueling port 46a is relatively large, and a filter 48 is filled therein. Is covered with a cap 50. The wiring cable 52 pulled out from the back side of the instrument panel 44 extends from the left side of the fuel supply port 46a of the fuel tank 46 toward the engine room 20a. The instrument panel 44 is provided with a QT switch (for quick turn) 54 that allows the front wheel 12 to rotate at approximately twice the speed during turning and to make a small turn. In addition, a radiator 56 is provided in front of the engine 20, and the cooling air is sucked by the fan 58 into the radiator 56 to cool the internal cooling water.
[0019]
As shown in FIG. 3, the instrument panel 44 is provided with a display device 60 at an upper portion, a combination switch 62 having a headlight switch, a horn switch, and a direction indicator switch at a lower left portion, and a right switch. A starter switch 64 is arranged at a lower part. The display device 60 includes a tachometer 66 for displaying the rotation speed of the engine 20 and a monitor display for displaying the operation / non-operation of various control functions related to a working unit (a rotary device or the like) supported on the body so as to be vertically movable. A water temperature gauge 70 for displaying the water temperature of the radiator 56 and a fuel gauge 72 for displaying the remaining amount of fuel in the fuel tank 46 are provided.
[0020]
The tachometer 66 is offset to the left with respect to the substantially horizontal center line of the instrument panel 44, and the monitor display section 68 is arranged at substantially the right and left center positions of the instrument panel 44. The gauge 70 and the fuel gauge 72 are offset to the right with respect to a substantially center line of the instrument panel 44 in the left-right direction.
[0021]
In this manner, the tachometer 66 is arranged to be offset to the left of the instrument panel 44 because the tachometer 66 has many mechanical parts, and when attached to the instrument panel 44, the amount of protrusion to the back side is reduced. The reason is that the fuel tank 46 may interfere with the fuel tank 46 because of its large size, and the diameter of the fuel supply port 46a of the fuel tank 46 is relatively large. The tachometer 66 is shifted to the left. As a result, the fuel supply port 46a of the fuel tank 46 can be set at the center of the tank, and not only the design and the fuel supply can be improved, but also the tank shape does not need to be reduced, so that the tank capacity is secured. It is possible to do.
[0022]
Further, since the tachometer 66 is arranged on the left side of the instrument panel 44, when the instrument panel 44 is detached and maintained, the wiring cable 52 drawn out of the tachometer 66 is attached and detached, and the connection coupler (FIG. At the time of attachment / detachment of the tachometer (not shown), the left and right empty spaces of the tachometer 66 can be easily accessed and the maintenance can be improved.
[0023]
Next, FIG. 4 is a side view of the fender frame 27 behind the control unit 24, and a handle 29 for getting on and off is mounted on the upper part of the fender frame 27. The working machine such as the rotary device 38 described above is supported by a three-point link mechanism (not shown), and is controlled to move up and down by a hydraulic cylinder (not shown) via a control unit 116 disposed behind the seat 28. It has become so. Further, the seat 28 can be turned up and down between a use state in which the operator is seated and a lying state in which the seat 28 is rotated forward around the lower pivot point (not shown) at the time of maintenance or the like. ing.
[0024]
In the present embodiment, the space behind the seat 28 is opened in a state where the seat 28 is laid down forward of the fuselage, and the control unit 116 is exposed.
[0025]
The seat 28 includes a mounting plate 107 fixed to an upper portion of a connecting plate 106 that connects the left and right fenders 27 that cover the left and right rear wheels 14, and a bracket 108 that is provided before and after the mounting plate 107. It is rotatably attached to the front of the fuselage via 109. That is, the seat 28 is rotatably mounted on a shaft (not shown) provided on the front bracket 108, and is capable of falling forward around the shaft around the shaft. Further, the connecting plate 106 is made of an iron plate and has a front portion 106a extending upward or obliquely upward from a body support surface (not shown) in front of the seat 28, and substantially horizontally and rearward just below the seat 28. It has a horizontal portion 106b that extends and a rising portion 106c that is bent substantially perpendicularly upward at the rear of the seat 28.
[0026]
A mounting plate (mounting portion) 112 made of an iron plate is fastened to the rising portion 106 c by bolts 110 and 111 so as to connect the left and right fenders 27 and 27. The mounting plate 112 includes a rising portion 112a that rises gently and obliquely rearward upward from the mounting base, an inclined portion 112b that slopes obliquely rearward and upward from the rising portion 112a, and an inclined portion 112b. A horizontal portion 112c extending substantially horizontally rearward from the upper end portion, and a bent portion 112d bent downward at a rear end of the horizontal portion 112c at substantially a right angle. .
[0027]
Further, a protection plate (protection member) 114 made of an iron plate is attached so as to cover the rear side of the inclined portion 112b. The protective plate 114 has a rear portion 114a substantially parallel to the inclined portion 112b of the mounting plate 112, and a ceiling bent at the upper end of the rear portion 114a so as to be in close contact with the horizontal portion 112c of the mounting plate 112. It has a plate portion 114b and a bottom plate portion 114c that is inclined downward and forward toward the front below the back surface portion 114a. The top plate portion 114b and the bottom plate portion 114c are fixed to the mounting plate 112 by welding.
[0028]
The case where the rear surface and the lower surface of the control unit 116 are covered with the protective plate 114 has been described above. However, the present invention is not limited to this. For example, the entire periphery including the rear surface and the lower surface of the control unit 116 may be sealed to some extent. It may be covered with a protection plate 114. In this case, it is possible to prevent muddy water or the like from sprinkling directly without watching during high-pressure car washing or work.
[0029]
A control unit 116 is attached to the inclined portion 112b of the mounting plate 112, and the control unit 116 is attached substantially parallel to the inclined portion 112b such that an upper portion is inclined rearward with respect to a lower portion. . This is for the purpose of improving the operability and visibility of the operation unit 122 to be described later, and securing the gap between the seat 28 and the control unit 116 by arranging the control unit 116 at an angle. To do that.
[0030]
As described above, when the control unit 116 is arranged behind the seat 28 and the seat 28 is folded forward in the fuselage, the rear space 124 of the seat 28 is opened, and the control unit 116 is exposed. ing. Further, in this exposed state, the empty space is widened, so that the operability when operating the operation unit 122 of the control unit 116 can be improved. Further, since the control unit 116 is disposed behind the seat 28, the internal circuit of the control unit 116 is affected by the temperature rise of the airframe as compared with the case where the control unit 116 is disposed in the engine room. It can be difficult. Furthermore, compared to the case where the control unit 116 is disposed below the seat 28 or below the operation panel on the side of the seat 28, it is possible to prevent the possibility that the control unit 116 will be crushed and damaged by external pressure or the like. . On the other hand, since the control unit is arranged behind the seat and the mounting space of the control unit 116 on the mounting plate 112 is large, it is possible to sufficiently cope with the expansion of the unit size accompanying the addition of the function of the control unit 116 and the like. Become.
[0031]
The front surface of the control unit 116 is covered with a transparent resin cover 118 which can be easily attached and detached. In this manner, by covering the front surface of the control unit 116 with the cover 118, it is possible to prevent the members from accidentally hitting the operation switch or the like and malfunctioning, and when no operation is necessary, the display unit or the like can be easily seen. By eliminating such a configuration, the configuration can be simplified.
[0032]
FIGS. 5A and 5B show a state in which the control unit 116 is mounted by the mounting plate 112 so that the upper portion is inclined to the rear of the fuselage with respect to the lower portion, and the rear side is covered with the protective plate 114. FIG. 6 is a front view of a cover 118 that covers the front surface of the control unit 116.
[0033]
The control unit 116 is mounted on the mounting plate 112 such that the operation surface faces the front of the machine body, and the display unit 120 and the operation unit 122 of the control unit 116 are provided on the operation surface side. A hole (not shown) is formed in the mounting surface of the mounting plate 112 so that the display unit 120 and the operation unit 122 can be operated from the front, and the front is covered with the cover 118 except during operation. If the shape of the hole and the shape of the cover 118 are tapered, it is possible to prevent shaking due to vibration caused by play. Then, when operating the operation unit 122 of the control unit 116, the cover 118 can be removed and the operation can be performed from the seat 28 side. In the mounting plate 112 to which the control unit 116 is mounted, a vacant space can be secured as a place for arranging other electrical components.
[0034]
【The invention's effect】
As described above, according to the first aspect of the present invention, the control unit is arranged behind the seat, and the space behind the seat is opened in a state where the seat is laid down in front of the fuselage so that the control unit is exposed. As a result, work in a wide space becomes possible, and operability can be improved. In addition, since the control unit is arranged behind the seat, there is a sufficient mounting space, so that it is possible to cope with an increase in unit size due to addition of functions of the control unit. Furthermore, since the control unit is arranged behind the seat, the internal circuit of the control unit can be made less susceptible to an increase in the temperature of the body as compared with the case where the control unit is arranged in the engine room.
[0035]
According to the invention according to claim 2, since the operation surface of the control unit is mounted so as to face the front of the fuselage, the operation unit of the control unit can be easily operated from the seat side, and operability is improved. Can be.
[0036]
According to the third aspect of the present invention, the control unit is mounted on the mounting portion erected from the body support surface behind the seat so that the upper portion is inclined with respect to the lower portion toward the rear of the body, so that the rear surface of the seat and the control unit are mounted. Can be secured to some extent, and the operability and visibility of the control unit can be improved.
[0037]
According to the invention according to claim 4, since the protection member is provided to cover the periphery of the control unit, it is possible to prevent water or muddy water from directly splashing during high-pressure car washing or work. In addition, a space vacant without being covered by the protection member can be secured as a place where another electric component is arranged.
[Brief description of the drawings]
FIG. 1 is an external view of a tractor to which the present invention is applied.
FIG. 2 is a front side view of the tractor.
FIG. 3 is a front view of an instrument panel.
FIG. 4 is a side view of a fender frame portion behind a control unit.
5A is a front view of a control unit in a mounted state, and FIG. 5B is a side view of the control unit.
FIG. 6 is a front view of a cover that covers the front of the control unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Tractor 14 Rear wheel 16 Running body 20 Engine 24 Control part 27 Fender frame 28 Seat seat (seat)
38 Rotary device (working unit)
112 Mounting plate (mounting part)
114 Protective plate (protective member)
116 control unit 120 display unit 122 operation unit 124 rear space

Claims (4)

A work unit is disposed between the left and right fenders that cover the left and right rear wheels, and includes a seat that can be turned up and down between a use state and a state of falling forward of the fuselage, and a work unit that is supported by the traveling body so as to be able to move up and down. In a mobile agricultural machine that performs movement control by a control unit disposed near the seat,
The control unit is disposed behind the seat, the seat is opened in a state where the seat is lying down in front of the fuselage, the space behind the seat is opened, and the control unit is exposed,
A mobile agricultural machine characterized by the above-mentioned. The control unit was mounted such that the operation surface of the control unit faces the front of the aircraft.
The mobile agricultural machine according to claim 1, wherein: The control unit is attached to an attachment portion erected from the body support surface behind the seat, such that an upper portion is inclined rearward with respect to a lower portion,
The mobile agricultural machine according to claim 1 or 2, wherein: Having a protection member that covers the periphery of the control unit,
The mobile agricultural machine according to any one of claims 1 to 3, wherein:

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