JP2015074326A - Tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispose a running shift lever and a work machine lifting control lever to a side panel so as to prevent mutual operations from being interfered.SOLUTION: When the front side of a side panel 16 is to be provided with a main shift lever 8 and a work machine lifting control lever 11 in parallel so as to be operable in longitudinal directions in a tractor comprising the side panel 16 where the main shift lever 8 and the work machine lifting control lever 11 are disposed outside of a cab 14, an operational range of the main shift lever 8 is provided outside and front side, and an operational range of the work machine lifting control lever 11 is provided inside and back side to displace the operational ranges of both of the levers 8 and 11 forward and backward, and an automatic shift range A of the main shift lever 8 is overlapped with a descent operation range of the work machine lifting control lever 11.

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.

The present invention was created in view of the above circumstances and has been created for the purpose of solving these problems, and a side panel in which a traveling speed change lever and a work implement raising / lowering operation lever are arranged on the outer side of a driver seat. 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 operating range of the traveling shift lever is outside and front, and the working implement lifting / lowering operation lever is provided. The operation range is set on the inside and rear side, the operation range of both levers is shifted forward and backward, the work machine is lowered by the front operation of the work machine elevating operation lever, and the work machine is moved by the rear operation of the work machine elevating operation lever Move the gear up to the speed-up side as you move further forward than the neutral position in the operating range of the travel shift lever. A manual shift operation range and an automatic shift range which is set at a position behind the neutral position and automatically shifts the transmission in response to the operation of the accelerator pedal are provided. It is characterized by overlapping with the lowering operation range of the lifting operation lever.
In addition, a setting panel portion in which a setting operation tool for automatic control is disposed is provided at the rear and outside of the side panel.

According to the first aspect of the present invention, when the traveling speed change lever and the work implement elevating operation lever are provided in parallel on the front side of the side panel so as to be operable in the front-rear direction, Because the operation range of the control lever is provided on the inner side and the rear side, the operation range of both levers is shifted back and forth, so that both levers are arranged so as not to interfere with each other without expanding the left and right installation space. Can do. In addition, when partially overlapping the operating range of the travel shift lever and work implement lifting operation lever, only the automatic shift range that is not operated during operation in the operation range of the travel shift lever and only during operation in the operation range of the work implement lift operation lever Since the operated lowering operation range is overlapped, it is possible to reduce the possibility that both levers interfere with each other both when working and when not working (for example, when traveling on the road).
According to the second aspect of the present invention, since the setting panel portion in which the setting operation tool for automatic control is arranged is provided at the rear and outside of the side panel, the rear side of the traveling speed change lever and the work equipment lifting operation lever In addition, it is possible to secure an armrest disposition space inside the setting panel portion and improve the operability of both levers.

(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 shifted according to the operation of the main transmission lever 8 (traveling transmission lever), and the auxiliary transmission mechanism is shifted 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 raised and lowered, a lifting hydraulic cylinder that raises and lowers the work machine, a tilt hydraulic cylinder that tilts the working machine left and right, and a PTO shaft (not shown) of the traveling machine body 1. 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, and the positions of both levers 8 and 11 are shifted up and down in a side view, and the step 19 formed at the rear of the operation range of the work machine lifting / lowering operation lever 11 A minute up / down operation switch 12 for moving the machine up and down is provided.

  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. Further, when the main transmission lever 8 and the work implement lifting / lowering operation lever 11 are provided in parallel so that they can be operated in the front-rear direction, the operation range of the main transmission lever 8 is outside and front, and the operation range of the work implement lifting operation lever 11 is inside and rear. The operating range of both levers 8 and 11 is shifted back and forth, the work implement is lowered by the forward operation of the work implement elevating operation lever 11, and the work implement is raised by the rear operation of the work implement elevating operation lever 11. In addition, the manual shift operation for shifting the transmission 3 to the speed-increasing side as it goes further forward than the neutral position N in the operation range of the main transmission lever 8 is performed. A range M and an automatic shift range A that is set to a position behind the neutral position N and automatically shifts the transmission 3 in response to the operation of the accelerator pedal 10 are provided. Since it overlaps with the lowering operation range of the work implement lifting operation lever 11, both levers 8 and 11 can be arranged so as not to obstruct each other without enlarging the arrangement space in the left-right direction, In partially overlapping the operation range of the main transmission lever 8 and the work implement lifting operation lever 11, 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 range of the work implement lifting operation lever 11. Since it is overlapped with the lowering operation range that is operated only at the time of work, when working and non-working ( Eg to at any time of road) also, it is possible to reduce the possibility that two levers 8 and 11 are in the way to each other.

  In addition, since the setting panel portion 17 in which the setting operation tool for automatic control is disposed is provided at the rear and outside of the side panel 16, the setting panel is provided at the rear of the main transmission lever 8 and the work implement lifting operation lever 11. An arrangement space for the armrest 18 can be secured inside the portion 17 and the operability of the levers 8 and 11 can be improved.

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 outside of the driver seat
On the front side of the side panel, when the traveling shift lever and the work implement lifting / lowering operation lever are provided in parallel so as to be operable in the front-rear direction, the operation range of the traveling shift lever is outside and front, the operation range of the working implement lifting operation lever is inside and Provided on the rear side, the operation range of both levers is shifted back and forth, the work machine is lowered by forward operation of the work machine lifting operation lever, the work machine is raised by backward operation of the work machine lifting operation lever, The manual shift operation range that shifts the transmission to the speed increasing side as it goes further forward than the neutral position and the rear position of the neutral position are set in the operation range of the travel shift lever, and the transmission is automatically operated according to the operation of the accelerator pedal An automatic shift range for performing a shift operation automatically, and the position in the front-rear direction of the automatic shift range is Tractor, characterized in that lowered operating range overlaps the operating lever.   The tractor according to claim 1, wherein a setting panel portion on which a setting operation tool for automatic control is disposed is provided at the rear and outside of the side panel.

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