JP6198557B2 - Tractor - Google Patents

Description

  The present invention relates to a tractor including a side panel on which a traveling speed change lever and a work implement lifting / lowering operation lever are arranged outside a driver's seat.

  In the tractor, various operating tools are arranged around the driver's seat on which the operator is seated. However, it is preferable that the operating tools that are operated during traveling are arranged so as not to change the hand holding the steering wheel. For example, in the tractor shown in Patent Document 1, a travel speed change lever (a sub speed change lever and an increase / decrease switch for main speed change) and a work implement elevating operation lever are arranged on a side panel provided on the right outer side of the driver seat. Even without changing the steering handle, it is possible to perform a traveling speed change operation and a work implement lifting operation.

JP 2012-1018 A

  However, since various setting operation tools and armrests for automatic control are provided on the side panel, the installation space is limited. When the traveling speed change lever and the work implement lifting operation lever are arranged on the side panel, the levers are mutually connected. May interfere with the operation.

  For example, in Patent Document 1, when a traveling speed change lever and a work implement lifting / lowering operation lever are arranged on the front side of the side panel, the traveling speed change lever is operated to change the shift range before the travel. The main shift operation during traveling is performed by the speed increase / decrease switch provided on the grip of the sub-shift lever, so that the travel shift lever and work implement lifting / lowering operation lever interfere with each other's operation. However, if the travel speed change lever provided on the side panel is used as the main speed change lever that is operated in the front-rear direction during travel, the travel speed change lever and the work equipment lifting / lowering control lever may interfere with each other's operation. There is.

SUMMARY OF THE INVENTION The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. In a tractor including a side panel on which a lever is disposed, on the front side of the side panel, when the traveling speed change lever and the work implement lifting operation lever are provided in parallel so as to be operable in the front-rear direction, the traveling speed change lever is located outside and at a high position, provided working machine elevating control lever inside and low position, the position of the two levers with shifting up and down in a side view, the operation range behind the working machine lifting operation lever by providing the working machine elevating control lever in a lower position collision in the step portion stepped surface to be formed facing working machine lifting operation lever side, a small vertical operating tool for fine vertical movement of the working machine on the work vehicle lift control lever side So as to be tractor, characterized in that provided.
According to a second aspect of the present invention, the operating range of the traveling speed change lever is provided on the outer side and the front side, the operating range of the work implement elevating operation lever is provided on the inner side and the rear side, and the operating range of both levers is shifted back and forth. The tractor is characterized in that the disposing portion of the work implement is bulged upward, and the disposing portion of the work implement lifting operation lever is formed so as to become lower toward the front side.

According to the first aspect of the present invention, when the traveling shift lever and the work implement lifting / lowering operation lever are provided in parallel on the front side of the side panel so as to be operable in the front-rear direction, the traveling shift lever is located outside and at a higher position. Since the positions of both levers are shifted up and down in a side view, the levers can be arranged so as not to interfere with each other without enlarging the left and right arrangement space. In addition, since the side panel is usually disposed inside the rear fender, there is an advantage that the traveling speed change lever, the work implement lifting operation lever, and the minute vertical operation tool can be disposed in a space-saving manner along the inner inclination of the rear fender.
Further, according to the invention of claim 2, the operating range of the travel shift lever is provided on the outer side and the front side, the operating range of the work equipment elevating operation lever is provided on the inner side and the rear side, and the operating ranges of both levers are shifted back and forth, The travel shifting lever mounting section is bulged upward and the work equipment lifting / lowering operation lever mounting section is formed so as to be lower toward the front side. The possibility that both levers interfere with each other's operation can be further reduced.

(A) is an overall plan view of the tractor, and (B) is an overall left side view of the tractor. It is a top view which shows the operation part of a tractor. It is a perspective view which shows the side panel of a tractor. It is a top view which shows the side panel of a tractor. It is an inner side view which shows the side panel of a tractor. It is a perspective view which shows the inside of the side panel of a tractor. It is an inner side view which shows the inside of the side panel of a tractor. It is an outer side view which shows the inside of the side panel of a tractor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a traveling machine body of a tractor. The traveling machine body 1 is output from an engine mounting portion 2 on which an engine (not shown) is mounted, a transmission 3 that changes engine power, and a transmission 3. The front wheel 4 and the rear wheel 5 that are driven by traveling power, a work machine connection part 6 to which various work machines are connected, and a driving part 7 on which an operator gets on are configured.

  The transmission 3 includes a main transmission mechanism (not shown) that shifts engine power in a multistage or continuously variable manner, and a sub-transmission mechanism (not shown) that shifts the shift range of the main transmission mechanism. The main transmission mechanism is operated for shifting according to the operation of the main transmission lever 8 (traveling transmission lever), and the auxiliary transmission mechanism is operated for shifting according to the operation of the sub transmission lever 9. Further, in a later-described automatic shift state (a state in which the main shift lever 8 is operated to the automatic shift range A) selected when not working (for example, when traveling on the road), the main shift mechanism is operated according to the operation of the accelerator pedal 10. Automatic shift operation is performed.

  The work machine connection unit 6 includes a three-point link mechanism that supports the work machine so that the work machine can be moved up and down, a lifting hydraulic cylinder that lifts and lowers the working machine, a tilting hydraulic cylinder that tilts the working machine left and right, and a PTO shaft (not shown). The working machine is provided with a working power transmission mechanism that transmits the working power output from the working machine to the working machine, and the working machine includes a work machine elevating operation lever 11 and a minute up / down operation switch 12 (micro up / down operation tool). It is moved up and down according to the operation.

  In addition, the traveling machine body 1 is provided with a control device (not shown) in order to realize various automatic control functions. For example, the control device according to the present embodiment automatically controls the working machine according to the depth automatic control for automatically raising and lowering the working machine according to the plowing depth detection at the working machine or the inclination detection at the working machine or the traveling machine body 1. Automatic tilt control that tilts right and left is performed.

  As shown in FIGS. 1 and 2, the driving unit 7 is disposed on the left side of the driver seat 14, the driver seat 14 disposed between the left and right rear fenders 13, the steering wheel 15 disposed in front of the driver seat 14, and the driver seat 14. The auxiliary transmission lever 9 and the side panel 16 disposed on the right outer side of the driver seat 14 are provided. The side panel 16 includes a setting panel unit 17 in which a setting operation tool for automatic control is arranged in addition to the main transmission lever 8, the work implement elevating operation lever 11, and the minute up / down operation switch 12 described above, and an armrest that supports an operator's arm. 18 is provided along the inside of the right rear fender 13. Hereinafter, the side panel 16 which is the main part of the present invention will be described with reference to FIGS.

  As shown in FIGS. 3 to 5, the main transmission lever 8 and the work implement lifting / lowering operation lever 11 are arranged in parallel on the front side of the side panel 16 so as to be operable in the front-rear direction. The work implement lifting / lowering operation lever 11 lowers the work implement by a forward operation and raises the work implement by a rear operation. Further, the operation range of the main transmission lever 8 includes a neutral position N, a manual transmission operation range M for shifting the transmission 3 (main transmission mechanism) to the speed increasing side as it goes further forward than the neutral position N, and a neutral position. An automatic shift range A is provided which is set at a rear position N and automatically shifts the transmission 3 (main transmission mechanism) in response to the operation of the accelerator pedal 10.

  In the embodiment of the present invention, when the main transmission lever 8 and the work implement lifting / lowering operation lever 11 are provided in parallel on the front side of the side panel 16 so as to be operable in the front-rear direction, the operation range of the main transmission lever 8 is set to the outside and front side. The operating range of the machine lifting operation lever 11 is provided on the inner side and the rear side, the operating ranges of both levers 8 and 11 are shifted back and forth, and before and after the automatic transmission range set at the rear end of the operating range of the main transmission lever 8 The position in the direction overlaps the lowering operation range A of the work implement lifting operation lever 11.

  By doing so, the levers 8 and 11 can be arranged so as not to interfere with each other without expanding the arrangement space in the left-right direction by shifting the operation range of the levers 8 and 11 back and forth. In addition, when the operation range of the main transmission lever 8 and the work implement lifting operation lever 11 partially overlaps, the automatic transmission range A that is not operated during the operation in the operation range of the main transmission lever 8 and the operation of the work implement lifting operation lever 11. Since the lowering operation range that is operated only when working in the range is overlapped, there is a possibility that both levers 8 and 11 may interfere with each other both when working and when not working (for example, when driving on the road). Can be reduced.

Further, in the embodiment of the present invention, when the main transmission lever 8 and the work implement lifting / lowering operation lever 11 are provided in parallel on the front side of the side panel 16 so as to be operable in the front-rear direction, the main transmission lever 8 is located outside and at a high position. The machine lifting / lowering operation lever 11 is provided at an inner and lower position, the positions of both levers 8 and 11 are shifted up and down in a side view, and the work machine lifting / lowering operation lever 11 is provided at a lower position . the stepped portion 19 of the stepped surface formed on the operating range rearward facing working machine lifting operation lever 11 side, a small vertical operation switch 12 to the minute vertical movement of the work machine as apparent from FIG. 3, 4 and 5 work It is provided so as to protrude toward the machine lifting operation lever 11 side .

  In this case, the levers 8 and 11 can be arranged so as not to obstruct each other without expanding the arrangement space in the left-right direction by shifting the positions of the levers 8 and 11 up and down in a side view. it can. Further, according to such an arrangement configuration of the operation tool, when the side panel 16 is disposed inside the rear fender 13, the main transmission lever 8, the work implement lifting / lowering operation lever 11 and the minute up / down operation switch 12 are inclined to the inside of the rear fender 13. There is an advantage that it can be arranged in a space-saving manner.

  In the embodiment of the present invention, when the positions of the levers 8 and 11 are shifted in the front-rear direction and the vertical direction, the disposing portion 20 of the main transmission lever 8 is bulged upward to The arrangement portion 21 is formed so as to be lower toward the front side. In this way, the operation trajectories of the main transmission lever 8 and the work implement lifting operation lever 11 in side view can be separated as much as possible, so that the possibility that both the levers 8 and 11 interfere with each other's operation is further reduced. Can be made.

  The setting panel unit 17 is provided at the rear and outside of the side panel 16. Thereby, the arrangement space of the armrest 18 is ensured behind the main transmission lever 8 and the work implement lifting operation lever 11 and inside the setting panel portion 17. The operability of both levers 8 and 11 can be improved by providing the arm rest 18 on the rear side of the main transmission lever 8 and the work implement lifting operation lever 11.

  In the present embodiment, the setting panel unit 17 is provided with the tilt setting tool 22 for setting the target tilt of the tilt automatic control and the PTO operation tool 23 for operating the PTO rotation. However, the setting tool provided on the setting panel unit 17 There are no restrictions on the operation tools. For example, in the present embodiment, the depth setting tool 24 for setting the target depth of the automatic depth control is disposed behind the main transmission lever 8, but the depth setting tool 24 is provided on the setting panel unit 17. Also good.

  Next, a support structure for the main transmission lever 8, the work implement lifting operation lever 11, and the armrest 18 will be described with reference to FIGS.

  As shown in FIGS. 6 to 8, a side panel frame 25 is provided inside the side panel 16. The side panel frame 25 includes an attachment portion 26 attached to the body frame side, a support portion 27 rising from the attachment portion 26, a lever support portion 28 extending forward from the upper end portion of the support portion 27, and a rear side from the support portion 27. The armrest 18 is attached to the upper ends of the support column 27 and the rear extension 29.

  The main transmission lever 8 is supported at the front end portion of the lever support portion 28 via the lever support shaft 30 so as to be rotatable forward and backward. At the base of the main transmission lever 8, a potentiometer 31 for detecting the operation position of the main transmission lever 8 and a detent mechanism 32 for holding the main transmission lever 8 in a plurality of operation positions in stages are provided.

  Further, the work implement lifting / lowering operation lever 11 is supported by a middle portion of the lever support portion 28 via a lever support shaft 33 so as to be able to rotate back and forth. A potentiometer 34 for detecting the operation position of the operation lever 11 is provided.

  According to the present embodiment configured as described, in the tractor including the side panel 16 in which the main transmission lever 8 and the work implement elevating operation lever 11 are arranged on the outer side of the driver seat 14, the front side of the side panel 16 is provided. In order to provide the main transmission lever 8 and the work implement lifting / lowering operation lever 11 in parallel so that they can be operated in the front-rear direction, the main transmission lever 8 is provided at the outer and high positions, and the work implement raising / lowering operation lever 11 is provided at the inner and lower positions. The position of both levers 8 and 11 is shifted up and down in a side view, and a minute up / down operation switch 12 for slightly moving the working machine up and down is provided at the step portion 19 formed behind the operating range of the working machine lifting / lowering operation lever 11. Therefore, the levers 8 and 11 can be disposed so as not to obstruct each other without enlarging the arrangement space in the left-right direction, and the main transmission lever 8 There is an advantage that a working machine lifting operation lever 11 and micro-vertical operation switch 12 can be arranged in space-saving along the inner slope of the rear fender 13.

  Further, the operation range of the main transmission lever 8 is provided on the outer side and the front side, the operation range of the work implement lifting operation lever 11 is provided on the inner side and the rear side, the operation ranges of both levers 8 and 11 are shifted forward and backward, and the main transmission lever 8 The disposing portion 20 is bulged upward and the disposing portion 21 of the work implement lifting operation lever 11 is formed so as to become lower toward the front side, so that the operation trajectory of the main transmission lever 8 and the work implement lifting operation lever 11 is allowed. It is possible to further reduce the possibility that both levers 8 and 11 interfere with each other's operation.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Transmission 6 Working machine connection part 7 Driving part 8 Main transmission lever 9 Sub transmission lever 10 Accelerator pedal 11 Working machine raising / lowering operation lever 12 Micro up / down operation switch 13 Rear fender 14 Driving seat 15 Steering wheel 16 Side panel 17 Setting panel part 18 Armrest 19 Step 20 Arrangement 21 Arrangement

Claims (2)

In the tractor having a side panel on which the traveling speed change lever and the work implement lifting operation lever are arranged on the outer side of the driver seat,
On the front side of the side panel, a traveling speed change lever and a work implement lifting operation lever are provided in parallel so that they can be operated in the front-rear direction.
Install the travel gearshift lever on the outside and high position, the work equipment lifting operation lever on the inside and low position, and shift the position of both levers up and down in side view,
By providing the work implement lifting / lowering lever at a low position, the step surface formed at the rear of the operation range of the work implement lifting / lowering lever is slightly moved up and down to the step portion facing the work implement lifting / lowering lever. A tractor characterized in that an up-and-down operation tool is provided so as to protrude toward a work implement lifting operation lever side . The operating range of the travel shift lever is provided on the outside and the front side, the operation range of the work implement elevating operation lever is provided on the inside and the rear side, and the operation range of both levers is shifted back and forth, and the travel shift lever is disposed upward. 2. The tractor according to claim 1, wherein the tractor is bulged and formed so that a disposition portion of the work implement lifting operation lever is lowered toward the front side.

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