JP4613107B2 - Operation part of work vehicle - Google Patents

Description

  The present invention relates to a configuration in which an operation lever is disposed on a dashboard that covers a handle post of a steering handle of a passenger work vehicle, in particular, a tractor. Specifically, the present invention relates to an arrangement configuration of a forward / reverse switching lever, an accelerator lever, and a work implement lift switch lever.

  Conventionally, the dashboard arranged in the control part of the tractor has a meter panel in which the handle shaft of the steering handle protrudes upward in the center of the upper surface, and a tachometer, fuel gauge, water temperature gauge, etc. are arranged in front of it. An accelerator lever, a forward / reverse switching lever, a work implement elevating switch lever, and the like are arranged on the side of the dashboard.

A technique is known in which a sensor, a switch, or the like disposed in the vicinity of the handle shaft can be easily attached and detached so that maintenance can be easily performed (for example, see Patent Document 1).
JP-A-5-16819

  However, if the operation levers are concentrated and placed too close to the steering wheel, there is a risk of accidental touching when turning the steering wheel. The possibility of operation mistakes is also increased. Accordingly, an object of the present invention is to provide an operation lever that is easy to understand and easy to operate with respect to an operation lever disposed around a steering handle of a tractor.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

According to the first aspect of the present invention, a forward / reverse switching lever (11), an accelerator lever (12), and a work implement lift switch lever (13) are provided on a dashboard (5) that covers a handle post (21) of a steering handle (10) of a work vehicle. The forward / reverse switching lever (11), the accelerator lever (12), and the work implement lifting / lowering switch lever (13) are disposed in front of the handle post (21), and the forward / reverse switching is performed. The lever (11) protrudes outward from the side surface of the dashboard (5), and the forward / reverse switching lever (11) is bent in a crank shape when viewed from the rear, and is lateral to the opening provided on the side surface of the dashboard (5). The gripping portion (11a) of the forward / reverse switching lever (11) is obliquely downward and outward of the steering handle (10), and Located outside the handle (10), the accelerator lever (12) protrudes outward from the side surface of the dashboard (5) opposite to the forward / reverse switching lever (11), and the accelerator lever (12) It is bent in a crank shape when viewed from the rear, protrudes laterally from an opening provided on the side surface of the dashboard (5), and the grip portion (12a) of the accelerator lever (12) is obliquely below and below the steering handle (10). The handle shaft, which is located outside the steering handle (10) and projects downward from the center of the steering handle (10), is rotatably supported by the handle post (21). (21) A power steering control valve (22) is arranged at the lower end of the forward / reverse switching lever (11) and the accelerator lever (12). The part, in which arranged on the front than the power steering control valve (22).

According to a second aspect of the present invention, in the operation portion of the work vehicle according to the first aspect, the work implement lifting / lowering switch lever (13) protrudes outward from the upper surface of the dashboard (5), and the work implement lifting / lowering switch lever (13) is provided. The grip part (13a) is arranged so as to overlap the steering handle (10) in plan view, and the grip part (12a) provided at the tip of the accelerator lever (12) is connected to the work implement lift switch lever (13 ) Is disposed outside the grip portion (13a) .

  As effects of the present invention, the following effects can be obtained.

  In claim 1, since the forward / reverse switching lever, the accelerator lever, and the work implement lifting / lowering switch lever can be operated in front of the handle post, the space between the seat and the seat can be increased. it can. In addition, the accelerator lever and the forward / reverse switching lever are arranged to protrude outward from the left and right side surfaces of the dashboard, and the operation lever is located on the outer front when both hands are placed on the steering handle, It becomes easy to grasp, and it is easy to operate and the operability can be improved.

  In claim 2, since the gripping portion of the work implement lifting switch lever is located below the steering handle, it can be easily operated with a finger, and the gripping portion of the accelerator lever and the gripping portion of the work implement lifting switch lever do not overlap. Operation mistakes are less likely to occur and operability can be improved.

  Next, embodiments of the invention will be described.

  FIG. 1 is a side view showing an overall configuration of a tractor according to an embodiment of the present invention, FIG. 2 is a plan view showing a configuration around a steering handle, and FIG. 3 is a rear view. 4 is a right side view, FIG. 5 is a view showing a meter panel, and FIG. 6 is a view showing a control ON / OFF switch panel. In the figure, the direction of the arrow is the traveling direction.

  The overall configuration of the tractor 100 according to the embodiment of the present invention will be described with reference to FIG. In the tractor 100, a front wheel 1 is supported by an engine frame 3 via a front axle case, and a rear wheel 2 is supported by a transmission case via a rear axle case. An engine is placed on the engine frame 3, and the engine is covered with a bonnet 4. The power from the engine is shifted by a transmission device housed in a transmission case and transmitted to the rear wheel 2 and the front wheel 1 so that the vehicle can run. A dashboard 5 is disposed at the rear of the bonnet 4, and a steering handle 10, a forward / reverse switching lever 11, an accelerator lever 12, a work implement lifting switch lever 13, and the like, which will be described later, are disposed on the dashboard 5.

  The clutch pedal 7 is arranged at the front part on the left step 6 below the dashboard 5 and the left and right brake pedals 8L and 8R are arranged at the front part on the right step 6. An accelerator pedal 19 is arranged. Step 6 A seat 9 is arranged on the left and right center of the rear part, fenders 14 and 14 are arranged on both sides of the seat 9 to cover the front and upper parts of the rear wheels, and the main transmission lever 15 is placed on the fenders 14 and 14. The auxiliary transmission lever 50, the PTO transmission lever 53, the tilling depth adjustment dial 52 (FIG. 2), the armrest 16 and the like are arranged. The steering unit includes the steering handle 10, the operation lever disposed near the steering handle 10, the seat 9, the operation lever disposed on both sides of the seat 9, and the like. Here, 17 is a safety frame. Reference numeral 18 denotes a lower link that is lifted and lowered by a lift arm at the rear of the vehicle body, which constitutes a part of a three-point link mechanism, and various work vehicles can be mounted on the rear.

  The configuration of the operation device provided in the dashboard 5 according to the embodiment of the present invention will be described with reference to FIGS. A handle shaft projecting downward from the center of the steering handle 10 is rotatably supported by the handle post 21, and a power steering control valve 22 is disposed at the lower end of the handle post 21.

  A meter panel 23 is disposed on the upper surface of the dashboard 5 in front of the handle post 21. As shown in FIG. 5, the meter panel 23 has a revolution meter 24, a fuel gauge 25, a water temperature gauge 26, an alarm monitor lamp, A lamp or the like indicating an operation display or the like is arranged.

  Specifically, the rotational speed meter 24 is arranged in the left and right center of the meter panel 23 as a substantially circular shape, and an hour meter 27 for digital display with liquid crystal or the like is disposed at the center rear part (lower part) of the meter panel 23. A fuel gauge 25 is arranged on the left side of the speedometer 24 so as to overlap with the left side of the speedometer 24, and a sector shape (substantially) on the right side of the speedometer 24. The water temperature gauge 26 is disposed so as to partially overlap the right side of the revolution meter 24 and is formed in a substantially mountain shape as a whole.

  The alarm monitor lamps are arranged side by side in the left-right direction in a vacant space in front of the revolution meter 24. That is, the heater lamp 28 that is turned on when the heater is operated when the engine is cold from the left in winter, the charge lamp 29 that is turned off even when the key switch is turned on when the battery voltage is lowered, and the hydraulic pressure is a predetermined pressure when the engine is operated. The hydraulic monitor lamp 30 that goes off when the PTO shift is neutral, the neutral lamp 31 that lights up when the PTO shift is neutral, the brake pedal connection indicator lamp 32 that lights up when the left and right brake pedals are disconnected, and the work that lights up when the work implement is raised A machine raising lamp 33 is arranged.

  Further, on the left side of the fuel gauge 25, a horizontal control lamp 34 that is turned on when the work implement is level-controlled and an inclination control that is turned on when the work implement is angle-controlled by setting the angle of the work implement when working on a sloping ground. A lamp 35 is arranged.

  Further, on the right side of the water temperature gauge 26, a speed increasing lamp 36 that is turned on when the front wheel is set to perform speed increasing control when turning, and when it is set to perform control for raising the work implement when the steering handle is rotated more than a set angle. A turn-up lamp 37 that is lit, and a back-up lamp 38 that is turned on when control is set to raise the work implement when the forward / reverse switching lever 11 is turned to the reverse side are arranged.

  In this way, the meter panel 23 is arranged so that the tachometer 24 that needs to be most visually confirmed at the time of work or traveling is conspicuous in the center, and the amount of fuel can be easily seen on the left and right sides thereof. Thus, the fuel gauge 25 is arranged, and the water temperature gauge 26 is arranged on the left and right sides so that the water temperature of the engine can be easily understood, thereby constituting an important display unit related to traveling. Various alarm lamps are arranged around the revolution meter 24, the fuel gauge 25, and the water temperature gauge 26 so that the operator can easily see them.

  Further, as shown in FIG. 3, the base of the work implement lift switch lever 13 and the control on / off switch panel 41 are arranged on the right and left sides of the meter panel 23 and on the upper surface of the dashboard 5 on the right side of the handle post 21. Has been. The control on / off switch panel 41 has a quadrangular shape. In this embodiment, four switches for enabling “on” and “off” of control are arranged in a diamond shape. Specifically, the tilt switch 42 for “on” and “off” whether or not the tilt of the work implement is automatically controlled to the set angle, and the work implement is lifted when the steering handle 10 is turned more than the set angle when turning. The turn-up switch 43 that performs “ON” and “OFF” of the control to be turned on, and the back lift that performs “ON” and “OFF” of the control that raises the work machine when the forward / reverse switching lever 11 is rotated to the reverse side. A switch 44 and a speed increasing switch 45 for performing “ON” and “OFF” control for increasing the rotation of the front wheels when the steering wheel is rotated by a set angle or more are disposed.

  When the tilt switch 42 is set to “ON” and the tilt angle setting dial (not shown) provided on the fender is level, the horizontal control lamp 34 is lit and the tilt angle setting dial is set to a position other than horizontal. When set, the tilt control lamp 35 is turned on. When the turning up switch 43 is set to “ON”, the turning up lamp 37 is turned on. Further, when the back raising switch 44 is set to “ON”, the back raising lamp 38 is turned on.

  Furthermore, nameplates 42a, 43a, 44a, and 45a are affixed to the upper surface of the control on / off switch panel 41 around the tilt switch 42, the turning up switch 43, the back up switch 44, and the speed increasing switch 45, respectively. The nameplates 42a, 43a, 44a, and 45a are colored with the names of the switches, and the colored colors are combined with the colors of the lamps so that the control contents can be easily distinguished. In the present embodiment, the nameplates 42a, 43a and 44a of the tilt switch 42, the turning up switch 43 and the back up switch 44, the horizontal control lamp 34, the tilt control lamp 35, the turning up lamp 37 and the back up lamp 38 are green. The speed increasing switch 45 and the speed increasing lamp 36 are orange.

  Further, a gripping part and a name plate of the main transmission lever 15 and a gripping part and a name plate of the auxiliary transmission lever 50, and a grip and an accelerator lever of the forward / reverse switching lever 11 serving as a travel transmission lever disposed on the fender 14 are provided. The 12 gripping portions are the same orange color, and the same as the speed increasing switch 45 and the speed increasing lamp 36, the color of the traveling system is unified. Furthermore, it is related to the raising / lowering of the work machine arranged on the fender 14. The nameplate of the working machine vertical height lever 51 and the nameplate of the reverse setting means (plowing depth adjustment dial 52 in this embodiment) are the same green color, and each of the tilt switch 42, the turning up switch 43 and the back up switch 44 Similar to the nameplates 42a, 43a, and 44a, the horizontal control lamp 34, the tilt control lamp 35, the swivel raising lamp 37, and the back raising lamp 38, the color of the work machine system is unified. The color of the gripping portion of the work implement vertical height lever 51, the gripping portion 13a of the work implement lift switch lever 13, and the gripping portion of the tilling depth adjustment dial 52 are black. Also, the gripping part and nameplate of the PTO speed change lever 53 are yellow. Further, the colors of the heater lamp 28, the charge lamp 29, and the hydraulic monitor lamp 30 are matched with red to unify the colors of the engine system. In this way, the traveling system, work implement lifting / lowering (hydraulic) system, PTO system, and engine system are separated into different colors so that the operation system can be easily distinguished and the erroneous operation can be prevented.

  Note that the colors of the grip portion of the control lever, the nameplate, the switch, and the lamp are not limited as long as the operator can identify them without following this embodiment.

  Further, a work light switch 46, a headlight switch 47, a direction indicating switch 48, and a horn switch 49 are provided on the left rear portion of the meter panel 23 and on the upper surface of the dashboard 5 on the left side of the handle post 21 to Concentrated on the left side of the handle for easy understanding. The work light switch 46 is a switch with a lamp so that the work light switch 46 is lit when it is lit to prevent forgetting to turn it off.

  Then, the forward / reverse switching lever 11 protrudes outward from the upper portion of the left side surface of the dashboard 5, the accelerator lever 12 protrudes outward from the upper portion of the right side surface of the dashboard 5, and the work implement lift switch lever 13 is moved to the dash. The board 5 extends from the upper right side to the right side. That is, the forward / reverse switching lever 11, the accelerator lever 12, and the work implement up / down switch lever 13 are disposed in the left-right direction, and the forward / backward changeover lever 11, the accelerator lever 12, and the work implement up / down switch lever 13 are As shown in FIG. 4, the gripping portion is disposed in front of the handle post. More specifically, as shown in FIG. 3, the pivot bases of the forward / reverse switching lever 11, the accelerator lever 12, and the work implement lifting / lowering switch lever 13 are substantially the same as the handle post 21, or are disposed in front of the handle post 21. The space between the dashboard 5 and the seat 9 is made as large as possible so as not to hit when getting on and off. Further, the parking brake lever 20 protrudes rearward from the lower rear portion of the dashboard 5.

  The forward / reverse switching lever 11 has a grip 11 a at the tip, a grip 12 a at the tip of the accelerator lever 12, a grip 13 a at the tip of the work equipment lift switch lever 13, and a grip at the tip of the parking brake lever 20. Each part 20a is provided with a different color so that it can be easily distinguished, and as described above, it is color-coded for each engine system, running system, and engine system to prevent erroneous operation and improve operability. Yes.

  As shown in FIG. 3, the forward / reverse switching lever 11 is bent in a crank shape when viewed from the rear, protrudes laterally from an opening provided on the side surface of the dashboard 5, and the grip portion 11 a is obliquely below the steering handle 10. As shown in FIG. 2, the outer side is located outside the steering handle 10 so that the grip portion 11a does not interfere when the steering handle 10 is turned.

As shown in FIG. 3, the accelerator lever 12 is bent in a crank shape when viewed from the rear, protrudes laterally from an opening provided on the side surface of the dashboard 5, and the gripping portion 12 a is obliquely below and outward of the steering handle 10. As shown in FIG. 2, the grip 12 a is positioned outside the steering handle 10 so that the grip portion 12 a does not interfere when the steering handle 10 is turned.

  As shown in FIG. 3, the work implement lifting switch lever 13 is bent in a substantially L shape in rear view, and is erected from the upper surface of the dashboard 5 diagonally forward of the handle post 21 and extends to the front side. As shown in FIG. 2, the grip 13a is disposed below the steering handle 10 (the wheel portion) so that the grip 13a overlaps the steering handle 10 in a plan view. It is possible to operate with a finger without having to release the hand from 10.

  The accelerator lever 12 and the work implement raising / lowering switch lever 13 protrude to the right in the same direction, but the gripping portion 12a of the accelerator lever 12 is located outside the gripping portion 13a of the working implement raising / lowering switch lever 13. Thus, the gripping portion 12a of the accelerator lever 12 is positioned below the gripping portion 13a of the work implement lift switch lever 13, and is disposed so as not to overlap at any rotational operation position in plan view and rear view. ing. With this configuration, an operation error of the accelerator lever 12 and the work implement lift switch lever 13 is prevented from occurring.

The side view which showed the whole structure of the tractor which concerns on embodiment of this invention. The top view which showed the structure of the steering handle periphery. Similarly rear view. Similarly right side view. The figure which shows a meter panel. The figure which shows a control on / off switch panel.

DESCRIPTION OF SYMBOLS 5 Dashboard 10 Steering handle 11 Forward / reverse switching lever 11a Gripping part 12 Accelerator lever 12a Gripping part 13 Work implement raising / lowering switch lever 13a Gripping part 15 Main transmission lever 21 Handle post 50 Sub transmission lever 51 Working machine vertical height lever 100 Tractor

Claims (2)

The dashboard (5) that covers the handle post (21) of the steering handle (10) of the work vehicle is provided with a forward / reverse switching lever (11), an accelerator lever (12), and a work implement lift switch lever (13). The forward / reverse switching lever (11), the accelerator lever (12) and the work implement lifting / lowering switch lever (13) are arranged in front of the handle post (21), and the forward / backward switching lever (11) is moved to the dash. The board (5) protrudes outward from the side surface, and the forward / reverse switching lever (11) is bent in a crank shape when viewed from the rear, and protrudes laterally from an opening provided on the side surface of the dashboard (5). The gripping portion (11a) of the switching lever (11) is diagonally below and outward of the steering handle (10), and the steering handle (10) The accelerator lever (12) protrudes outward from the side surface of the dashboard (5) opposite to the forward / reverse switching lever (11), and the accelerator lever (12) has a crank shape in rear view. Bending and projecting laterally from the opening provided on the side surface of the dashboard (5), the grip portion (12a) of the accelerator lever (12) is diagonally below and outside the steering handle (10), A handle shaft located outside the steering handle (10) and projecting downward from the center of the steering handle (10) is rotatably supported by the handle post (21), and is attached to the lower end of the handle post (21). A power steering control valve (22) is arranged, and the lower part of the forward / reverse switching lever (11) and the accelerator lever (12) is connected to the power steering. Work vehicle operating unit, characterized in that arranged on the front than the ring control valve (22). The operation part of the work vehicle according to claim 1, wherein the work implement lifting / lowering switch lever (13) protrudes outward from the upper surface of the dashboard (5), and the gripping portion (13a) of the work implement lifting / lowering switch lever (13). Is arranged so as to overlap with the steering handle (10) in plan view, and a gripping part (12a) provided at the tip of the accelerator lever (12) is connected to a gripping part (13a of the work implement lifting switch lever (13). The operation part of the work vehicle characterized by having arrange | positioned outside .

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