KR20090087888A - Combine - Google Patents

Abstract

A technique improving operator's visibility downward in front of a combine with operability and workability of the combine maintained. A steering handle (11) is formed in a substantially U-shape in a plan view, and the front ends of the steering handle (11) are placed on both left and right sides above a front cover (30). The front cover (30) is split into upper and lower portions. In a side view, the lower cover (31) is substantially vertically raised and the upper cover (32) is tilted rearward. In a plan view, a left end portion of the front cover (30) is curved toward the rear and the front end of the steering handle (11) is placed at a position on a plane extended forward from the upper cover (32). ® KIPO & WIPO 2009

Description

Combine {COMBINE}

TECHNICAL FIELD This invention relates to the technique of a combine. More specifically, It is related with the technique of realizing the improvement of the visibility of the charge room of a combine.

Background Art Conventionally, combines having a steering column mounted almost at the center of the steering wheel, having a steering handle on the upper surface of the steering column, and having a front cover covering the front side of the steering column are widely used and known. . For example, Patent Literature 1 discloses the technique.

According to the prior art, the steering means is composed of a steering wheel to improve the operability of the combine, and the steering wheel, the front cover, etc., all the steering wheel, so that the body is made compact, by the muddy water, such as splashing rice Since the foot of the operator can be prevented from being soiled, it contributes to the improvement of workability by realizing a comfortable working environment.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2000-135022

When harvesting rice by a combine, the positioning of jaws is often performed while visually recognizing the dichotomy board closest to the driver's seat (i.e., the rightmost). The shorter and closer the driver's seat is to the driver's seat, the steering wheel and the front cover are obstructing the watch. In the prior art, the visibility of the distributor board becomes poor.

Therefore, the present invention has been made in view of such a phenomenon, and has as its object to provide a technique for improving the visibility of the charge room of a combine while maintaining the operability and workability improved in the prior art.

The problem to be solved of the present invention is as described above, and means for solving the problem will be described next.

This invention improves the visibility of the dividing board which is an apparatus provided in front of the driving operation part of a combine by making the shape of a driving operation part along the line which connects the eyes of an operator seated in a driver's seat and the dividing plate in front of a driver's seat. .

That is, in the combine which concerns on this invention, a steering column is installed upright in the substantially left and right center part of the driving operation part, and a steering wheel is provided in the upper surface of the said steering column, and the front cover which covers the front side of the said steering column is provided. In the combine, the steering wheel is formed in a substantially U shape in plan view, and the front end of the steering wheel is disposed above both the left and right sides of the front cover.

Moreover, in the combine which concerns on this invention, a steering column is installed upright in the substantially left and right center part of the driving | operation operation part, a steering wheel is provided in the upper surface of the said steering column, and the front cover which covers the front side of the said steering column is provided. In the combine, the front cover is divided up and down, and viewed from the side, the lower cover is installed almost vertically, and the upper cover is inclined rearward, and in plan view, the left end of the front cover is rearward. It is characterized by forming a curved toward.

Moreover, in the combine which concerns on this invention, a steering column is installed upright in the substantially left and right center part of the driving | operation operation part, a steering wheel is provided in the upper surface of the said steering column, and the front cover which covers the front side of the said steering column is provided. In the combine, the steering wheel is formed in a substantially U shape in plan view, the front end of the steering wheel is disposed above both the left and right sides of the front cover, and the front cover is divided up and down, The lower cover is installed almost vertically, and the upper cover is inclined rearward, and in plan view, the left end of the front cover is curved backwards, and on the front extension of the upper front cover. It is characterized by arranging the front end of the steering wheel.

As an effect of this invention, the effect as disclosed below is shown.

In the combine according to the present invention, the range in which the operator's eyes are blocked by the steering wheel is reduced, so that the second panel closest to the driver's seat (the rightmost) is easily visually recognized while the operator is seated in the driver's seat. can do. Moreover, workability can be improved by this.

Moreover, in the combine which concerns on this invention, since the range which an operator's gaze is interrupted | blocked by the front cover decreases, it is easy to see the dividing plate which is closest to the driver's seat (the rightmost) in the state in which the operator is seated in the driver's seat. Can be recognized. Moreover, workability can be improved by this.

Moreover, in the combine which concerns on this invention, since the range which an operator's gaze is interrupted | blocked by a steering wheel or a front cover decreases, the dividing board which is closest to the driver's seat (the rightmost) is made in the state that an operator is seated in the driver's seat. It can be easily recognized by the eye. Moreover, workability can be improved by this.

1 is a left side view showing the overall configuration of a combine using a front cover according to an embodiment of the present invention.

2 is a right side view of FIG. 1.

3 is a plan view of FIG. 1.

It is a perspective view which shows the whole of the upper cover which comprises the front cover which concerns on this invention.

5 is a front view of FIG. 4.

6 is a plan view of FIG. 4.

7 is a side view of FIG. 4.

8 is a perspective view illustrating a steering wheel according to an embodiment of the present invention.

9 is a front view of FIG. 8.

10 is a plan view of FIG. 8.

11 is a side view of FIG. 8.

12 is a rear view of FIG. 8.

It is a schematic diagram of the right side which shows the relationship between the right dividing board and the gaze of an operator.

FIG. 14 is a schematic plan view of FIG. 13.

Explanation of the sign

11: steering wheel 30: front cover

31: lower cover 32: upper cover

Next, an embodiment of the invention will be described.

1 is a left side view showing the overall configuration of a combine using a front cover according to an embodiment of the present invention.

2 is a right side view of FIG. 1.

3 is a plan view of FIG. 1.

It is a perspective view which shows the whole of the upper cover which comprises the front cover which concerns on this invention.

5 is a front view of FIG. 4.

6 is a plan view of FIG. 4.

7 is a side view of FIG. 4.

8 is a perspective view showing a steering wheel according to an embodiment of the present invention.

9 is a front view of FIG. 8.

10 is a plan view of FIG. 8.

11 is a side view of FIG. 8.

12 is a rear view of FIG. 8.

It is a right side schematic diagram which shows the relationship between the right divider plate and the operator's eye.

FIG. 14 is a schematic plan view of FIG. 13.

[Combiner (1) overall configuration]

First, the harvester using the front cover 30 which concerns on this invention is represented, and the whole structure of the combine 1 is demonstrated using FIGS.

As shown in FIGS. 1 to 3, the combine 1 supports the body frame 2 with the crawler-type traveling apparatuses 3 · 3 on the left and right, and supports both the crawler-type traveling apparatuses 3 · 3 with the body frame. By driving with the engine mounted on (2), it is comprised so that forward run or backward run is possible. The harvesting part 4 which harvests rice and conveys it to the back of a body is provided in the whole of the base frame 2 so that a lifting and lowering is possible, and threshing which threshes the harvesting rice from the harvesting part 4 on the left side of the base frame 2 is possible. The part 5 and the sorting part 6 which sorts the grain kernel threshed by the said threshing part 5 are arrange | positioned up and down. In the rear of the threshing part 5, the discharge straw processing part 7 which discharges the discharge straw after threshing in the threshing part 5 is provided.

Moreover, on the right rear part of the said gas frame 2, the grain tank 8 which stores the grain kernel conveyed by the grain container from the sorting part 6 is provided, and the grain is extended from the rear of the said grain tank 8 upwards. A discharge auger 18 for discharging grain kernels in the tank 8 to the outside of the gas is arranged. An operation device comprising a steering wheel 11 and various operation levers including a discharge clutch lever to be described later, and a driver's seat 12 on all of the right side of the gas frame 2 in front of the grain tank 8. The operation unit 15 is provided, and the engine and the transmission are arranged below the driving operation unit 15.

[Operation Operation Panel 15]

Next, the driving operation unit 15 will be described with reference to FIGS. 1 to 3 or 13.

The front cover 30 is provided in front of the steering column 9 which is installed on the whole of the driving operation unit 15, and the steering column 9 at the front end of the bottom 10 of the lower surface of the driver's seat 12. It consists of a lower cover 31 is installed to extend upwards toward the upper and lower center of the upper cover 32, and the upper cover 32 is installed to be inclined slowly backward toward the upper side from the upper end of the lower cover 31. It is.

The lower cover 31 is formed in a substantially “co” shape, which is open toward the rear in a plan view, and the upper cover 32 is formed at a lower end thereof in accordance with the cross-sectional shape of the lower cover 31, Moreover, it is set as the cross-sectional shape which curves gradually as it extends upwards.

Here, the driver's seat 12 is comprised of the seat part 12a and the backrest part 12b, The driver's seat 12 is provided in the substantially center part before and behind the driving operation part 15 from the back, and the left side of the said driver's seat 12 is carried out. The side column 16 stands up to the left end of the bottom part 10 from the left side to the left side of the steering column 9. In addition, the upper surface of the side column 16 is provided at substantially the same height as the seat portion 12a when viewed from the side, and the upper surface of the side column 16 includes a main gear lever, a sub-shift lever, a work clutch lever, and the like. The side wall part 17 arrange | positioned at the side part and the whole, and formed in the substantially "<" shape by planar view is further provided, and a side panel, a display panel, a grip, etc. are assembled to the side wall part.

The side wall portion 17 has an inclined surface descending toward the driver's seat 12 side, and allows the operator seated in the driver's seat 12 to easily recognize the side panel and the display panel. And, the right end of the side wall portion 17 extends toward the upper cover 32, and the upper left surface portion of the upper cover 32 is connected to the extension line of the curve drawn by the upper surface portion of the side wall portion 17 The design is improved by making the side wall part 17 and the upper cover 32 into a continuous shape.

On the other hand, the right side of the driving operation unit 15 is almost at the center from the front, that is, between the driver's seat 12 and the steering column 9 is an opening, and the hatch when the operator boards the driving operation unit 15. It is.

The front cover 30 which concerns on this invention is demonstrated using FIGS. 4-7. Here, the arrow A shown in FIG. 4, FIG. 6, and FIG. 7 shows the advancing direction front, and determines the left-right front-back direction along the direction of the said arrow A. FIG.

The upper surface portion of the upper cover 32 constituting the front cover 30 has a left and right central portion in an arc shape and is gently concave downward, and a grip portion 33 stands on the upper end portion (elevation side) of the upper surface portion. It is.

In addition, in plan view, both left and right ends of the upper cover 32 are formed in a shape curved toward the rear. In other words, the upper cover 32 has an upper cover (not shown) so that when the operator is seated in the driver's seat 12, the right divider plate 13 is not visually blocked by the upper cover 32. As shown in FIG. 13, the left front side of 32) is a shape along the line Q which connects the operator's eye seated in the driver's seat 12 and the right divider board 13, and as convex as possible forward, as shown in FIG. Increasing the space and improving the occupancy, and is formed so as to be located below the line Q to improve visibility.

In addition, the right front side of the upper cover 32 makes it possible to recognize the side divider extended from the right side dividing plate 13 to the right rearward with an eye so that an intermediate division etc. are easy.

That is, the front cover 30 is divided up and down, and the lower cover 31 is almost vertically installed when viewed from the side, and the upper cover 32 is inclined rearward, and the front cover ( The left end of 30) is curved toward the rear.

As a result, the range in which the operator's line of sight is blocked by the front cover 30 is reduced, so that the right side divider plate closest to the driver's seat 12 (rightmost) in the state where the operator is seated in the driver's seat 12 ( 13) can be easily recognized by the eye. Moreover, workability can be improved by this.

The grip portion 33 is constituted by a substantially cylindrical concave portion 33a extending in the left and right direction, and a support member 33b connecting the concave portion 33a and the main body portion 34, and these members 33a and 33b. Since 34) is formed integrally with a thermosetting resin or the like, the number of parts is reduced, which is economically superior.

As described later, when the operator rides on the driving operation unit 15, a large bending stress is generated at the connecting portion of the support member 33b and the main body 34, but these members 33a, 33b, 34 By integrally forming, the rigidity with respect to the said stress can be improved.

Here, the indentation 33a is disposed with a sufficient gap below the steering wheel 11, and as shown in FIG. 6, the indentation 33a is of the steering wheel 11 in plan view. It is installed in the immediate vicinity of the right grip point.

For this reason, for example, in the case of shaking the posture of the body suddenly by shaking sideways during the operation of the combine 1, the right hand is momentarily changed from the steering wheel 11 to the convex part 33a to trim the body posture. In addition, in the case of performing unstable work such as turning work of the body or working over the paddy field, the steering wheel 11 can be controlled by the left hand while holding the mandrel 33a tightly and maintaining the steering posture. In addition, when steering the steering wheel 11 with the right hand, the left hand holds the grip provided in the side wall part 17, and supports a body.

A plurality of concave portions (may be convex) 35 · 35 ······ which are arranged side by side in the left and right direction are arranged in an elliptical shape extending in the vertical length on the front and rear both sides of the concave portion 33a, and the operator is in the concave portion. By placing a finger along 35 * 35 ..., the said back part 33a can be clamped easily in a suitable position, without slipping.

With this shape, the grip part 33 is provided on the upper right side of the upper cover 32, that is, on the side of the hatchway to the driver's seat 12, whereby the operator grabs the unstable steering handle 11 and the like when getting on the driving operation part 15. It is possible to maintain a stable riding posture by holding the back portion 33a of the grip portion 33 without putting the weight on it. Furthermore, the steering wheel 11 can be immediately replaced by sitting on the driver's seat 12. .

In addition, since the grip part 33 is provided only in the upper right part of the upper part of the upper cover 32 which is needed when riding on the driving-operation part 15 as mentioned above, it is regarding the front downward of the combine 1. It is not obstructed and, at the time of lifting, the presence of the grip part 33 can be recognized visually.

In addition, since the convex portion 33a of the grip portion 33 is formed in a substantially cylindrical shape extending in the left and right direction, when the operator grasps it by hand to get in the driver's seat, it is easy to get used to the hand and the convex portion 33a as described above. By providing a plurality of recesses 35. 35. The driver's seat 12 can be boarded while maintaining the posture.

[Steering handle 11]

Next, the detail of the steering wheel 11 which concerns on this invention is demonstrated using FIGS. 8-12. Here, the arrow A shown in FIG. 8 and FIG. 10 thru | or 12 shows the advancing direction front, and determines the left-right front-back direction along the direction of the said arrow A here.

The steering wheel 11 is comprised by the support body 43 etc. which connect the grip main body 41, the boss member 42, and both members 41 * 42, and these members 41 * 42 * 43 are metal members. It is formed integrally with the urethane resin material etc. which wrapped the core member which consists of these.

The grip main body 41 is formed in substantially semi-circle shape by removing the front part in the advancing direction in plan view, and protruding portions 41R and 41L bulging from side to side are provided at both ends.

That is, the right protrusion 41R gently curves the distal end portion, and has a bulging shape toward the inner side (left side), and the upper and lower surfaces thereof have a planar shape.

In addition, a substantially triangular concave portion 25 is provided on the top surface portion of the protrusion 41R, and a name plate indicating the name and the operation direction of the operation switch 21 described later disposed thereon is attached thereto.

In the upper surface portion of the protruding portion 41R, a substantially rectangular concave portion 44, one end of which is further lowered, is provided behind the concave portion 25, and the operation switch 21 is provided in the concave portion 44. It is installed.

Here, the operation switch 21 is a switch which performs operation, such as for example of mowing and lifting, steering fine adjustment, In this embodiment, the operation switch 21 for mowing and lifting is provided. In addition, although the said operation switch 21 is comprised by the neutral return switch which can be operated easily by a fingertip, it does not limit, such as a toggle switch, a seesaw switch, a multidirectional switch. The operation direction of the operation switch 21 of the present embodiment is, for example, the thumb so that the operator can easily operate using the thumb while holding the grip main body 41 of the steering wheel 11. The finger is in the direction of movement. That is, it is set as the tangential direction in the position of a thumb in the state of holding. Therefore, the operator can operate the combine safely in a state in which the grip main body 41 of the steering wheel 11 is firmly gripped without a significant collapse of the body posture and a stress on the thumb.

On the rear outer side (right side) of the protrusion part 41R, the protrusion part 22 extended to the rear in a substantially rectangular shape is provided, and the upper and lower parts are planar shape. In addition, a rectangular concave portion 24 is provided on the upper surface portion of the protruding portion 22.

Further, behind the protruding portion 41R, convex portions (may be concave portions) extending from the lower surface of the grip main body 41 toward the inner side (left side) are installed in parallel in the front-rear direction. It is.

The protruding portion 41L on the left side protrudes in a large round shape toward the inside (right side) slightly toward both the left and right sides, and a flat surface is formed on the upper and lower portions of the protruding portion 41L. Moreover, the recessed part 45 is provided in the upper surface part of 41 L of said protrusion parts in the substantially left side (inner side) from the center. Similarly to the protrusion 41R, the protrusions 23, 23, 23 extending from the lower surface of the grip main body 41 toward the inner side (right side) are parallel to the front and rear directions at the rear of the protrusion 41L. It is installed.

By forming the grip main body 41 in such a shape, when an operator lifts the grip main body 41 of the steering wheel 11, the operator has a finger | tip in the clearance gap of the said some convex part 23 * 23 ... provided in right and left. The grip main body 41 can be lifted at an appropriate position to prevent slipping, and at the same time, the recess 45 · 24 provided at the upper surface portions of the protrusion 41L and the protrusion 22, respectively. ), The grip main body 41 can be held firmly.

Here, when comparing the positional relationship of the front-back part 41R and the front-back part 41L, the said protrusion part 41R is provided so that it may become front. That is, in the steering wheel 11, the grip main body 41 is substantially semi-circular removed the front part in the advancing direction in plan view, and the right end part extends forward compared with the left end part.

In other words, the left end portion of the steering wheel 11 is formed to be shorter than the right end portion, and the shape has the advantage of reducing the range of blocking the field of view in the front left and down directions of the operator as much as possible.

That is, the steering wheel 11 is formed in substantially U shape in plan view, and the front end of the steering wheel 11 is arrange | positioned above the left and right sides of the front cover 30 (upper cover 32).

As a result, the range in which the operator's line of sight is blocked by the steering wheel is reduced, so that the right side divider plate 13 closest to the driver's seat 12 (most right) is placed in the state where the operator is seated in the driver's seat 12. It can be easily recognized by the eye. Moreover, workability can be improved by this.

In the small-sized (two-seat or three-seat) combine 1, the harvesting unit 4 is usually arranged on the left side of the body, and the driving operation unit 15 is arranged on the right side of the body. Therefore, in a normal mowing operation, the base will mow uncut rice sequentially in the counterclockwise direction.

At this time, the right side dispersing plate 13 provided at the right lower part of the harvesting section 4 is mowed in accordance with the stem of the uncut rice on the morning or the right side, but the grip main body 41 of the steering wheel 11 is shown in the present embodiment. Since the visibility in the vicinity of the right side dividing plate 13 improves and it becomes easy to properly position the harvesting | reaping part 4 with respect to a tank by setting it as the shape in, there is no possibility that it may be cut off.

The boss member 42 has an upright cylindrical shape in which nuts and the like are assembled therein and assembled to the steering shaft. The boss member 42 and the grip main body 41 are connected by a support member 43. The said support member 43 is comprised in substantially T shape from planar view, and is comprised in substantially L shape from the side view. That is, the connection part 43a is extended toward the front from the left and right center of the support member 43, and is fixed to the back surface of the said boss member 42. As shown in FIG. In addition, the left and right both sides of the supporting member 43 · 43 are connected to the rear lower surface of the grip main body 41.

The support member 43 extends obliquely upward while gently bending toward both outer sides from the rear left and right side surface portions of the connecting portion 43a, and is connected to the lower surface of the grip main body 41.

Here, the position where the support member 43 is connected with the lower surface of the grip main body 41 is arrange | positioned in the vicinity of the rear part of the said grip main body 41 by planar view, In the said grip main body 41, the said both protrusions ( A convex portion having a predetermined length is formed between the 41R 占 41L and the support member 43. That is, as shown in Fig. 10, the slightly larger dimension X (right) and the dimension Y (left) are set as compared with the width of the almost adult hand.

With such a configuration, the operator can easily release the grip main body 41 of the steering wheel 11 at an appropriate position, and the support member 43 can obstruct and prevent the user from grasping any inappropriate location. have.

Further, the rear of the grip main body 41 has a gentle arc shape (large curvature radius) that is twisted forward between the two connecting portions with the two supporting members 43 · 43, and the driver's seat ( 12) can be sufficiently secured, and since the upper part of the thigh is opened even when the operator is seated in the driver's seat 12, the stand stands once in the lateral side or the inclined rear side of the steering wheel 11. Then, the boarding operation to the driver's seat 12 can be easily performed, without going into a seat part while twisting a body.

In addition, the operator pulls one end forward and pulls the other end backward in order to turn the steering wheel 11 by turning the steering wheel 11, but at this time, even if the force remains and one hand tries to slide forward, the protrusion Becomes a stopper and does not slip out, and there is no fear that one hand may accidentally slip backward to pull into the obstruction of the supporting member 43.

Next, the relationship between the operator's line of sight and the body parts is described using FIG. 13 or FIG. 14.

As shown in FIG. 13, since the line of sight is blocked by the front end of the steering wheel 11 in the related art, the right divider plate 13 cannot be recognized by the eye unless the line of sight in FIG. 13 is indicated by the line P. When the right separating plate 13 was visually recognized, the operator inevitably needed to stand on the bottom 10.

As shown in FIG. 13, when it is set as the shape of the steering wheel 11 and the front cover 30 which are shown in this Example, when the operator looks at the right side divider plate 13 from the right side, It becomes possible to make it the line of sight shown by the line Q in FIG. 13, and since the line of sight is not interrupted by the steering wheel 11 or the upper cover 32, an operator places the right side divider plate 13 in the state seated at the driver's seat 12. FIG. It can be seen that it can be easily recognized by the eye.

In addition, as shown in FIG. 14, when the steering wheel 11 and the front cover 30 which are shown in the present Example are made into the shape, the line of sight when an operator looks at the right divider plate 13 in plan view is In FIG. 14, the line of sight is indicated by the line R, and the line of sight is not blocked by the steering wheel 11 or the upper cover 32, so that the operator easily looks at the right branch plate 13 while sitting in the driver's seat 12. You can see that it can be recognized.

That is, the steering wheel 11 is formed in a substantially U shape in plan view, the front end portions of the steering wheel 11 are disposed above both the left and right sides of the front cover 30, and the front cover 30 is placed up and down. Divided into, and the lower cover 31 is installed in a substantially vertical position as viewed from the side, and the upper cover 32 is inclined rearward, and in a plan view, the left end of the front cover 30 faces backward. By forming the curvature and arranging the front end of the steering wheel 11 on the front extension of the upper cover 32, the range of the operator's gaze is blocked by the steering wheel 11 or the front cover 30. Since it decreases, the operator can easily visually recognize the right side divider plate 13 closest to the driver's seat 12 in the state where the operator is seated in the driver's seat 12. Moreover, workability can be improved by this.

As described above, the steering column 9 is placed upright and almost at the center of the driving operation unit 15, and the steering wheel 11 is provided on the upper surface of the steering column 9, and the steering column 9 is In the combiner provided with the front cover 30 which covered the front side, the said steering wheel 11 is formed in U shape by planar view, and the front end of the said steering wheel 11 is left and right both sides of the front cover 30. It is characterized by being disposed above.

This configuration reduces the range in which the operator's eyes are blocked by the steering wheel 11, so that the operator's seat is closest to the driver's seat 12 (rightmost) in the state where the operator is seated on the driver's seat 12 ( 13) can be easily recognized by the eye. Thereby, workability can be improved.

Moreover, the steering column 9 is installed in the center of the left and right almost at the center of the driving operation part 15, and the steering wheel 11 is provided on the upper surface of the steering column 9, and the front side of the steering column 9 is provided. In the combiner provided with the front cover 30 which covers, the said front cover 30 is divided up and down, and when viewed from the side, the lower cover 31 is installed substantially vertically, and the upper cover 32 is rearward. It is configured to be inclined, and in a plan view, the left end of the front cover 30 is formed to bend backward.

Because of this configuration, the range in which the operator's eyes are blocked by the front cover 30 is reduced, so that the divider plate closest to the driver's seat 12 (the rightmost side) in the state where the operator is seated in the driver's seat 12 ( 13) can be easily recognized by the eye. Moreover, workability can be improved by this.

Moreover, the steering column 9 is installed in the center of the left and right almost at the center of the driving operation part 15, and the steering wheel 11 is provided on the upper surface of the steering column 9, and the front side of the steering column 9 is provided. In the combiner provided with the front cover 30 which covers, the said steering wheel 11 is formed in substantially U shape by planar view, and the front end of the steering wheel 11 is left-right upper side of the said front cover 30 In addition, the front cover 30 is divided up and down, the lower cover 31 is installed upright almost vertically when viewed from the side, and the upper cover 32 is configured to be inclined rearward, and is viewed in plan view. The left end of the front cover 30 is curved to the rear, and at the same time the front end of the steering handle 11 is disposed on the front extension of the upper front cover (32).

Such a configuration reduces the range in which the operator's eyes are blocked by the steering wheel 11 and the front cover 30, so that the operator is closest to the driver's seat 12 (the closest to the driver's seat 12). The dividing plate 13 on the right side can be easily recognized by the eye. Thereby, workability can be improved.

Moreover, the steering wheel 11 which consists of a substantially semicircle which removed the front direction direction part in planar view is formed by extending the right end part forward compared with the left end part.

By forming the shape of the steering wheel 11 in the substantially semicircle shape by which the front part of the advancing direction was removed by such a structure, sufficient visibility of the front lower part can be ensured in the state which an operator is seated in the driver's seat 12, and the said steering wheel By forming the right end portion of the handle 11 forwardly as compared to the left end portion, the visibility of the lower left front side is particularly improved with respect to the substantially center portion of the work vehicle, that is, the driver's seat 12, and the alignment at the time of mowing operation is easy. I can do it.

In addition, the front and rear ends of the steering wheel 11 are provided with projections 41R and 41L which are convex left and right, respectively, and the recesses 24 and 45 are arranged at the upper ends of the projections 41R (22 and 41L). It is.

In such a configuration, the front and rear ends of the steering wheel 11 are provided with protrusions 41R and 41L which are convex left and right, respectively, so that the operator's hand does not slip out during the steering. That is, in order to turn the steering wheel 11, one end is pulled forward and the other end is pulled backward. At this time, even if the force remains and one hand slides forward, the stopper 41R and 41L stops. There is no slipping out.

Further, by arranging the recesses 24 and 45 at the upper end portions of the protrusions 41R (22 and 41L), the operator firmly puts a thumb on the recesses 24 and 45 when holding the steering wheel 11. The steering wheel 11 may be grasped.

Moreover, in front of the projection part 41R * 41L of the steering wheel 11, the some convex part 23 arranged in the front-back direction from the lower surface toward the inner side surface is arrange | positioned.

With such a configuration, the operator places the convex portions 23 by arranging a plurality of convex portions 23 arranged in the front-rear direction from the lower surface toward the inner side in front of the protrusions 41R and 41L of the steering handle 11. Since the steering wheel 11 can be grasped at an appropriate position by guiding the gap between the parts and the proper steering posture can be maintained, the operability during turning operation of the work vehicle is improved.

In addition, a switch 21 for operating a work mechanism is disposed in the recess 44 on the upper surface of the protruding portion 41R of the steering wheel 11, and the operation direction of the work switch 21 is set to the steering wheel 11. ) Will hold the thumb in the direction of movement.

By such a structure, the operation switch 21 which operates an operation mechanism is arrange | positioned in the recessed part 44 of the upper surface of 41 L of protrusions of the said steering wheel 11, and the operation direction of the said operation switch 21 is changed. By adjusting the thumb to hold the steering handle 11 in the direction of movement, the operator can easily operate the work mechanism by using the thumb as it is while holding the steering handle 11 tightly. It is possible to safely operate the work vehicle without disturbing the posture.

Moreover, as the front cover 30 which stands in front of the driver's seat 12 provided in front of the steering column 9 which rotatably supports the steering shaft of the steering wheel 11, the front cover 30 is provided. The grip portion 33 extending almost upward is integrally molded on the upper end portion of the head) and the hatchway side to the driver's seat 12.

Since the grip part 33 provided in the upper end part of the front cover 30 is arrange | positioned at the hatchway side to the driver's seat 12 by such a structure, when the operator gets in the driver's seat 12, the said grip part 33 is easily carried out by hand. ), And the grip 33 is integrally formed with the front cover 30 so that the parts score is low, so it is economically superior, and the rigidity against bending stress generated at the root of the grip 33 is excellent. You can increase your strength. In addition, although the grip part 33 can also be comprised in inverted U shape, it can also hang the handle part of a bag etc. as a hook by protruding upward in convex shape.

In addition, the upper end part of the grip part 33 is provided with the substantially cylindrical convex part 33a extended in the left-right direction.

With such a configuration, at the upper end of the grip portion 33, by providing a substantially cylindrical convex portion 33a extending in the left and right direction, it is easy to get used to the hand when the operator holds it by hand to get on the driver's seat 12. Therefore, it does not break down the boarding posture.

In addition, a plurality of concave portions 35 are arranged on the front and rear surfaces of the concave portion 33a in the horizontal direction.

With such a configuration, by arranging a plurality of concave portions 35 parallel to the left and right directions on the front and rear side surface portions of the convex portion 33a, the operator guides the plurality of concave portions 35 at the appropriate positions. Since the concave portion 33a can be grasped, an appropriate riding posture can be maintained. In addition, by providing the plurality of recesses 35 on the front and rear sides, the operator can hold the ridge 33a and ride in the driver's seat 12 on both sides of the front or inclined front side of the front cover 30. .

TECHNICAL FIELD The present invention relates to a combine technique, and more particularly, to a technique for realizing improved visibility of a charge chamber of a combine, and can be widely applied to agricultural applications.

Claims (3)

I put up a steering column in the center of all the left and right sides of the driving control panel, At the same time having a steering wheel on the upper surface of the steering column, In a combine having a front cover for covering the front side of the steering column, The steering wheel, When viewed in a plane, it is almost U-shaped, The front end of the steering wheel, A combine, which is disposed above both the left and right sides of the front cover. I put up a steering column in the center of all the left and right sides of the driving control panel, At the same time having a steering wheel on the upper surface of the steering column, In a combine having a front cover for covering the front side of the steering column, Split the front cover up and down, From the side, Install the bottom cover almost vertically, Configure the top cover by tilting it backwards, Seen from the plane, Combines, characterized in that for forming the left end of the front cover curved toward the rear. I put up a steering column in the center of all the left and right sides of the driving control panel, At the same time having a steering wheel on the upper surface of the steering column, In a combine having a front cover for covering the front side of the steering column, The steering wheel, When viewed in a plane, it is almost U-shaped, The front end of the steering wheel is disposed above the left and right sides of the front cover, Split the front cover up and down, From the side, Install the bottom cover almost vertically, Configure the top cover by tilting it backwards, Seen from the plane, While bending the left end of the front cover towards the rear, Combines characterized in that the front end of the steering wheel on the front extension of the upper front cover.

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