JP2018020744A - Tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such the problem that a depth setting tool for setting a target depth with depth automated control is disposed in the same level as a dispose part of a travel gear shift lever and can cause a wrong operation.SOLUTION: In a tractor, a dispose part 21 of a work machine lifting operation lever 11 is disposed in a first recess part 40 and a dispose part 20 of a travel gear shift lever 8 is disposed in a substantially same height as an arm rest 18. A second recess part 41 is disposed between the dispose part 20 and the arm rest 18 and a depth setting tool 28 is disposed in the second recess part.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a tractor provided with a side panel disposed on an outer side of a driver's seat on a traveling speed change lever, a work implement lifting lever, and various operation tools.

  In the tractor, a traveling speed change lever and a work implement lifting / lowering operation lever are arranged on one side of the driver's seat, for example, on the right outside so that the hand holding the steering wheel does not change during field work.

  Conventionally, on the side panel arranged on the right outside of the driver's seat, when the traveling gear shift lever and the work implement lifting / lowering operation lever are provided in parallel so that they can be operated in the front-rear direction, the traveling gear shift lever is placed on the outside and at a higher position. The operation lever is provided at an inner and lower position, and the positions of both levers are shifted up and down in a side view, and the work machine is moved up and down slightly on the step formed at the rear of the operation range of the work machine elevating operation lever. A tractor provided with a moving operation tool has been devised by the present applicant (Patent Document 1). Accordingly, the travel shift lever and the work implement lifting operation lever are shifted up and down in a side view, and the levers are arranged so as not to obstruct each other without expanding the arrangement space in the left-right direction.

JP2015-74327A

  The side panel of the above-mentioned Patent Document 1 has a recessed portion that has a groove that guides the work equipment lifting operation lever with respect to a portion that has a groove that guides the speed change lever, and the upper and lower shifts of both levers in the side view described above. In addition, the rear of the recessed portion is raised and connected to the armrest, and the minute vertical movement operating tool is disposed on the stepped portion. Further, a depth setting dial for setting the depth of the depth automatic control is disposed behind the guide groove of the speed change lever. That is, the depth setting dial is arranged at a portion where the shift lever is positioned one step higher than the recessed portion where the work implement elevating operation lever is located, and the operator can move the shift lever or the work implement elevating operation lever. When operating the lever, especially when the elbow is placed on the armrest and the lever is operated at the tip of the hand, the operator's fingers etc. may touch the depth setting dial at the high position, and the depth setting dial may be erroneously operated. There is.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tractor in which the depth setting tool is disposed at a recessed position of a side panel, thereby solving the above-described problems and further improving operability.

According to the present invention, a traveling speed change lever (8), a work implement lifting / lowering operation lever (11), a depth setting tool (28) for setting a target depth for automatic depth control, and an armrest are provided outside the driver seat (14). In the tractor provided with the side panel (16) in which (18) is arranged,
The side panel (16) has a first recess (40) lower than the armrest on the front side of the armrest (18) and on the driver seat (14) side. Arrangement part (21) of the raising / lowering operation lever (11) is arranged,
The disposing portion (20) of the traveling speed change lever (8) is disposed adjacent to the first recess (40) and at substantially the same height as the armrest (18),
There is a second recess (41) lower than the armrest between the travel shift lever arrangement portion (20) and the armrest (18), and the depth setting tool (28) is provided in the second recess. Arrangement part (42) was arranged,
The tractor is characterized by that.

For example, referring to FIG. 2 to FIG. 6, a minute vertical movement operation tool (12) that causes the working machine to move up and down slightly in a step (19) between the first recess (40) and the armrest (18). )
The operation direction of the work implement lifting operation lever (11) and the operation direction of the minute vertical movement operation tool (12) are arranged so as to be substantially aligned in a straight line (I).

  The depth of the second recess (41) is shallower than that of the first recess (40), and the upper surface of the depth setting tool (28) is provided with the armrest (18) and the travel shift lever. It is located below the line (H) connecting the parts (20).

  The reference numerals in the parentheses are for comparison with the drawings, but do not affect the structure described in the claims.

  According to the first aspect of the present invention, since the speed change operation lever is disposed in the disposition portion that is substantially the same height as the armrest, and the work implement elevating operation lever is disposed in the first recess, the travel operation for travel speed change operation is performed. In this case, the operator can stably operate the shift control lever at a high position with the elbow placed on the armrest while facing forward, and when operating backward while looking at the work implement, It is possible to stably operate a work implement lifting operation lever by placing an elbow on the armrest.

  In the above operation, especially the operation of the speed change lever, the depth setting tool located behind the speed change lever is disposed in the second recess, so that the finger part of the forearm with the elbow placed on the armrest has the depth. Without touching the operation tool, it is possible to prevent erroneous operation of the depth setting tool.

  According to the second aspect of the present invention, the work implement lifting operation lever and the minute vertical movement operation tool are arranged so that the operation directions are substantially aligned in a straight line, so that the operator places the elbow on the armrest. Can be operated stably and easily in a stable state.

  According to the third aspect of the present invention, since the depth setting tool is disposed in the second dent portion shallower than the first dent portion, it is less likely to be erroneously operated even when the work implement lifting operation lever is operated. Since the upper surface of the vertical movement operating tool is located below the line connecting the travel shift lever arrangement portion and the armrest, erroneous operation during operation of the travel shift lever can be reduced.

The side view which shows the tractor which can apply this invention. The perspective view which shows the operation part. The perspective view which shows a side panel. The perspective view which shows the upper cover of a side panel. It is a figure which shows the upper cover of a side panel, (a) is a top view, (b) is a front view, (c) is a side view. It is a figure which shows the action | operation of a side panel, (a) is a side view, (b) is a top view, (c) is a side view.

  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. 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 for transmitting the working power output from the working machine to the working machine, and the working machine includes a working machine lifting / lowering operation lever 11 and a minute up / down operation switch 12 (a minute up / down movement operating tool). Is moved up and down according to the operation (see FIG. 2).

  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. And a side panel 16 disposed on the right outer side of the driver seat 14. 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 FIG. 3, the main transmission lever 8 and the work implement lifting 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 elevating 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 the automatic shifting range A set at the rear end of the operating range of the main shifting lever 8 is set. The position in the front-rear direction overlaps the lowering operation range 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 has an inclination setting tool 22 for setting a target inclination for automatic inclination control, a raising height setting tool 25 for defining the raising height of the working machine, and a lowering for regulating the lowering speed of the working machine. A switch for operating the speed setting tool 26 and other automatic controls, for example, automatic tilt, automatic depth, draft control, and its indicator lamp are arranged. There is no limit. Further, a lower limit position setting tool 30 for setting the lowering position of the work implement lifting operation lever 11 and a depth setting tool (dial) 28 for setting a target depth for the automatic depth control are provided.

  The side panel 16 includes a side cover 33 that rises toward the driver's seat 14, and an upper cover 31 that covers the space between the upper portion of the side cover 33 and the right rear fender 13, and the rear inner portion B extends along the driver's seat 14. It extends in the front-rear direction, and the front inner portion C extends obliquely outward toward the front. As shown in FIGS. 4 and 5, the cover 31 has a guide groove 36 which is a disposing portion 20 for the main transmission lever 8 and a disposing portion 21 for the work implement lifting operation lever 11 in a front portion C thereof. The guide grooves 37 are arranged side by side in parallel, and both the guide grooves 36 and 37 extend side by side in the front-rear direction, but are predetermined so that the front is directed outward along the tapered front portion C. The angle is diagonal. The upper portion is arranged so that the arrangement portion 21 in which the guide groove 37 for the work implement lifting operation lever 11 is formed is lower than the arrangement portion 20 in which the guide groove 36 for the main transmission lever 8 is formed. A first recess 40 is formed in the cover 31 so that the driver seat 14 side is lowered. The first recessed portion 40 has a recess 40a at the front portion, and has an inclined curved surface at the rear so that the rear portion falls toward the recess 40a. An arrangement portion 21 having the guide groove 37 for the work implement lifting operation lever 11 is formed on the inclined curved surface.

  The disposing portion 20 having the guide groove 36 for the main transmission lever 8 is formed of a smooth convex curved surface formed in the front-rear direction, and an inclined surface is formed between the disposing portion 20 and the recessed portion 40. A second recessed portion 41 is formed between the rear end of the arrangement portion 20 made of the convex curved surface and the front end of the armrest 18. The second recess 41 is provided with a hole which is an arrangement portion 42 of the depth setting tool (dial) 28, and the depth setting tool 28 is formed in the guide groove 36 for the work implement lifting operation lever. It is arranged on the rear extension line. The second recessed portion 41 is at a higher position than the rear end portion of the work implement lifting operation lever disposing portion 21 disposed in the first recessed portion 40, and the step slope between them is the first recessed portion 40. Are arranged integrally along the guide groove 36 continuously to the slope between the main transmission lever 20 and the main transmission lever 20. The rear portion of the second recessed portion 41 is an inclined rising surface extending from the stepped portion 19, and is on the same line I as the work implement lifting operation lever guide groove 37 [see FIG. 6 (b)]. A hole (arrangement part) 43 for the front and rear minute up / down operation switch 12 is formed in the step part 19.

  The upper surface of the armrest 18 is a flat surface, and is substantially in the same horizontal plane (same height) H [see FIG. 6 (a)] as the flat surface and the rear end portion of the speed change lever disposing portion 20, and the second in the meantime. The depth of the recessed portion 41 is set so that the upper surface of the depth setting dial (tool) 28 fits under the horizontal plane. The armrest 18 has a horizontal surface on which the setting panel portion 17 is disposed. The horizontal surface is higher than the armrest 18 and the shift lever disposition portion 20, and the setting panel portion 17 plane, the armrest 18, An inclined surface is formed between the transmission lever arrangement portion 20 and the transmission lever arrangement portion 20.

  Next, the operation of the side panel 31 (16) will be described with reference to FIG. The operator puts his elbow on the armrest 18 and operates each lever. The main transmission lever 8 is at a high position and is operated at an angle in which the forearm is raised by placing an elbow on the armrest 18, and therefore, it is easy to operate when traveling forward. In the field work, in order to see the field work by the work machine, it is often operated facing backward. Since the work implement lifting / lowering operation lever 11 is operated along the guide groove 37 which is in a low position and is inclined downward toward the recess 40a of the first recess 40, the armrest 18 is attached with an elbow to the forearm. It is easy to operate while looking at the back.

  When automatic control such as depth control is turned off, the lower limit position setting tool 30 defines the downward movement of the guide groove 37 to operate the work implement lifting operation lever 11 forward. The working machine such as a rotary is lowered in accordance with the operation position of the operation lever. When the position of the work implement is slightly moved up and down, the angle of the forearm is increased while folding the wrist along the operation direction of the work implement lifting operation lever 11, and the minute up / down operation switch is operated with the fingertip as shown in FIG. 12 is operated. At this time, the minute up / down operation switch 12 is positioned on the operation line (extension line of the guide groove 37) I of the work implement elevating operation lever 11, and the finger operating the work implement elevating operation lever 11 is the operation lever 11 Even in the separated state, it moves along the continuous step slope (step, wall surface) of the first recess 40, and the operator is surely guided to the minute up / down operation switch 12 without looking at the fingers. By operating the operation switch 12 in the up or down direction, the work implement is operated by a minute amount in the up or down direction. The minute up / down operation switch 12 is operated by the minute operation (within 1 second), but when operated in the raising direction for 1 second or longer, it is defined by the work implement raising height setting tool 25. When the work implement rises to a certain height and is operated in the lowering direction for 1 second or longer, the work implement descends to a height defined by the work implement lifting operation lever 11.

  When the automatic depth control switch is on, the operator operates the depth setting tool (dial) 28 to a predetermined position. The work implement is lowered by operating the work implement lifting / lowering operation lever 11 fully in the downward direction, and the working depth of the work implement is detected based on the angle of the rear cover and the like. Work with the tilling depth set by.

  The depth setting tool 28 is disposed in the second recess 41 and is located below the horizontal plane H connecting the armrest 18 and the main transmission lever disposing portion 20, so that the main transmission lever 8 or the work implement elevating operation lever 11 is provided. The forearm or finger does not touch the depth setting tool 28 when the operator does not operate the armrest 18 with the elbow on the armrest 18, and the depth automatic control depth is inadvertently changed. Can be prevented.

8 Traveling gear shift lever 11 Working machine lifting / lowering operating lever 12 Small vertical movement operating tool 14 Driver's seat 16 Side panel 18 Armrest 20 Traveling gear shifting lever disposing part 21 Working machine lifting / lowering operating lever disposing part 28 Depth setting tool (dial)
40 1st dent part 41 2nd dent part 42 depth setting tool arrangement | positioning part

Claims (3)

On the outside of the driver's seat, a tractor equipped with a side shifter lever, a working gear elevating operation lever, a depth setting tool for setting a target depth for automatic depth control, and a side panel on which an armrest is arranged.
The side panel has a first recess that is lower than the armrest in front of the armrest and on the driver seat side, and an arrangement portion of the work implement lifting operation lever is disposed in the first recess.
An arrangement portion of the traveling speed change lever is disposed adjacent to the first recess and at substantially the same height as the armrest,
Between the disposition portion of the traveling speed change lever and the armrest, there is a second recess portion lower than the armrest, and the disposition portion of the depth setting tool is disposed in the second recess portion.
A tractor characterized by that. A minute vertical movement operating tool for finely moving the working machine up and down is disposed on the step portion between the first recess and the armrest,
The operation direction of the work implement lifting operation lever and the operation direction of the minute vertical movement operation tool are arranged so as to be substantially linearly aligned.
The tractor according to claim 1. The depth of the second recess is shallower than the first recess, and the upper surface of the depth setting tool is positioned below a line connecting the armrest and the travel shift lever arrangement portion,
The tractor according to claim 1.

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