JP3486323B2 - Steps for elevating the combine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating step for getting in and out of a driver's seat of a combine harvester.

[0002]

2. Description of the Related Art Conventional combine harvesters have a plurality of steps for moving up and down to the driver's seat, which are provided in a plurality of vertical steps on the side of the driver's seat, and the steps are fixed to the fuselage side. There is also a fixed step and a movable step that is formed to project in an L shape with respect to an arm pivotally supported on the machine body side and that can be housed by a rocking operation. However, there is a drawback that the movable step comes into contact with the machine body side during storage and the swing range is restricted, and in the stored state, a part of the movable step projects laterally beyond the fixed step, making the overall width of the machine body larger than necessary.

[0003]

The steps for raising and lowering the combine of the present invention for solving the above-mentioned problems are performed by the driver's seat 3
A plurality of steps 7 for raising and lowering to the side of the driver's seat 3 are provided in the vertical direction, and the step 7 includes a fixing step 12 fixed to the machine body 1 side and a shaft swingable to the machine body 1 side. In a combine comprising a movable step 18 fixed to a supported arm 17, the arm 17 is pivotally attached to the side of the machine body 1 so that the movable step 18 projects to the side of the machine body 1 in the use state A , Uncut on movable step 18
The first feature is that the narrow guide 21 for the grain culm pushing guide is attached .

In addition, the movable step 18 is in use state A or case.
A positionable accommodated state B, and a second feature that it has a possible change regulation preparative <br/> with the attitude of the narrow guide 21 corresponds to the storage state B with the use state A of the variable dynamic step 18 .

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 are a right side view, a front view, and a plan view of a main part of a combine to which the present invention is applied, and a pretreatment unit 2 for performing a cutting operation and the like is provided in front of a machine body 1 so as to be vertically swingable as in the conventional case. In addition, a driver's seat 3 is provided on the right rear side of the pretreatment unit 2, and a threshing unit 4 is provided from the left side of the driver's seat 3 to the rear of the machine body 1.

At this time, the right side of the driver's seat 3 is open, and the operator gets into the driver's seat 3 from the opening 6 and operates the combine as in the conventional case. However, the opening 6 on the side of the driver's seat 3 is used. A plurality of steps 7 are provided in the lower part in the vertical direction, and the operator can easily get in the driver's seat 3 by using the steps 7 as a step.

Next, the structure of step 7 will be described. As shown in FIGS. 1 to 3, below the floor 8 of the driver's seat 3, an opening 9 having an opening on the right side is formed in a side surface 11 below the driver's seat 3, and the opening 9 is substantially vertical. An upper step 12 having a substantially U shape in a plan view (see FIG. 3) is fixedly provided in the central portion so as to project rightward from the side surface 11.

At this time, as shown in FIG. 4, in the upper step 12, the end portion is bent in the front-rear direction so that the front-rear length L1 of the protruding portion is shorter than the front-rear length L2 of the opening 9 (L2> L1). The both ends are fixed to the front and rear inner surfaces 9a and 9b of the opening 9 and fixed to the machine body 1 side.

That is, the upper step 12 is a fixed step fixed to the body 1 side, and above the upper step 12, the inside of the opening 9 is provided from above the side end of the upper step 12 projecting to the driver seat 3 side. Is formed (the front-rear length of the space 13 is the same as the front-rear length of the opening 9) due to the above structure, and the front-rear width (length) L1 of the upper step 12 is the upper step. It is formed smaller than the front-rear width (length) L2 of the space 13 formed above the step 12. The floor 8 of the driver's seat 3 also functions as a fixed step.

On the other hand, as shown in FIGS. 1 to 4, the upper step 1 on the front and rear inner surfaces 9a and 9b of the opening 9 is described.
A bracket 14 protruding rightward is fixed to each of the lower positions of the two, and an arm 17 is rotatably supported by a tip end portion of the bracket 14 via a fulcrum shaft 16. The tip of the bracket 14 does not project laterally from the upper step 12, that is, the fulcrum shaft 16
The (fulcrum of the arm 17) also does not project laterally from the upper step 12.

At the end of the arm 17, a lower step 18 having a substantially U shape in plan view is provided.
8 is fixed below the bracket 14 (upper step 12) so as to project to the right side of the machine body 1 (side surface 11) so as to project in an L-shape when viewed from the front with respect to the arm 17. . That is, the lower step 18 is a movable step that is formed to project in an L shape with respect to the arm 17 that is pivotally supported on the body 1 side.

The bracket 14 is formed with a positioning portion 14a which is bent in the front-rear direction.
By contacting the arm 17 with the 4a, the lower step 18
Is positioned below the upper step 12, the lower step 18 is positioned. That is, the lower step 18 is positioned below the upper step 12 by the contact between the arm 17 and the positioning portion 14a, and is positioned in the use state A in which the lower step 18 projects laterally of the machine body 1 (side surface 11). A stay 19 is provided inside the lower step 18.

On the other hand, the front-rear length L3 of the lower step 18 is smaller than L2 because it is between the front and rear arms 17 (L2> L).
3) formed, but larger than L1 (L3 ≧ L
1) Formed and satisfy L2> L3 ≧ L1.
That is, the lower step 18 which is a movable step is formed such that the front-rear width (length) L3 is smaller than the front-rear width (length) L2 of the space 13 and larger than the front-rear width (length) L1 of the upper step 12 which is a fixed step. ing.

Further, the swing fulcrum of the arm 17 (the fulcrum shaft 16
Vertical axis D) to the upper surface of the upper step 12
1 is smaller than the vertical distance D2 from the swing fulcrum of the arm 17 to the upper surface of the lower step 18 of the use state A (D2>
D1) formed, lower step 18 to arm 17
When it is swung upward around the swing fulcrum of D, D2> D1 and L2> L3.
The arm 1 is housed and housed inside, but in the space 13
The lateral width (length) α from the swing fulcrum of 7 toward the opening 9 is larger than the protrusion width (length) β of the arm 17 in the lower step 18 from the swing fulcrum to the side of the body 1 (α ≧ β)
Since it is formed and L3 ≧ L1 as described above, the front and rear arms 17 swing outside (front or rear) of the front and rear of the upper step 12, and the lower step 18 enters the space 13 and the upper step. It is stored and accommodated without projecting from the side of step 12 to be in the stored state B.

The storage state B of this lower step 18
Since the lower step 18 does not laterally project beyond the lateral projecting end of the upper step 12, the overall width of the airframe 1 does not unnecessarily increase, and the lower step 1
The structure of the arm 17 for supporting 8 (including the pivotal support to the machine body 1 side and the supporting structure of the lower step 18) is facilitated. The positioning and fixing of the lower step 18 to the use state A or the stored state B is performed by a frictional force between the arm 17 and the bracket 14 by the fulcrum shaft 16, that is, the frictional force is a predetermined force by the operator. The arm 17 is positioned and fixed with a force capable of swinging.

Since D2 can be made relatively long by the above structure, the ground clearance of the lower step 18 can be set relatively freely (it can be lowered) when the use state A is set. By this, the vertical distance D3 from the fulcrum shaft 16 to the lower surface of the lower step 12 of the use state A can be made relatively large, and since the lower step 12 has a gate-like shape in a side view, the legs are placed inside the arms 17. It can be placed and D3 ≧ β can be set. Also in this embodiment, D3 ≧ β is set,
As a result, the ground clearance of the lower step 18 can be set relatively low, and β can be made as small as possible to reduce the weight of the lower step 18.

On the other hand, as shown in FIG. 1 to FIG. 3, FIG. 5, and FIG. 6, the lower step 18 has a narrow guide 21 for guiding the uncut grain culm to the lower surface side in the use state A.
However, the mounting posture can be changed and adjusted between an operating posture a in which the narrow guide 21 projects forward and a storage posture b in which the tip 21a of the narrow guide 21 in the operating posture a faces rearward. If possible, narrow guide 21
Is rotatably attached and supported on the lower surface side of the lower step 18.

That is, the rear end 21b side of the narrow guide 21 in the working posture a is rotatably supported by the bracket 22 attached to the lower step 18 via the fulcrum shaft 23, and the narrow guide 21 is in the use state A. Lower step 18
When the posture of the narrow guide 21 is switched, the narrow guide 21 is projected downward about the fulcrum shaft 23 (downward when the lower step 18 is in the use state A).
It is possible to switch between the working posture a and the storage posture b by rotating it to.

At this time, when the narrow guide 21 is switched to the storage posture b, the narrow guide 21 is stored in the range of the lower surface of the lower step 18 without protruding from the front and rear and the left and right of the lower step 18, as shown in FIG. The lower step 18 is stored in the state B in which the narrow guide 21 is stored.
Thus, the narrow guide 21 is compactly housed together with the lower step 18, and the width of the machine body 1 is not increased more than necessary. If the narrow guide 21 does not protrude from the upper step 12 in the retracted posture B of the lower step 18 when the narrow guide 21 is in the retracted posture b, the narrow guide 21 in the retracted posture b protrudes from the lower surface of the lower step 18 in the front-rear direction or the left-right direction. May be.

With the above structure, by switching the lower step 18 to the use state A during the normal cutting and threshing work,
The narrow guide 21 can be set to the working posture a, and the same reaping work can be performed, but when replacing the crawler 24 or performing maintenance, the lower step 18 is set to the stored state B and the narrow guide 21 is shaken downward. By moving to the storage posture b, a working space can be easily secured, and maintenance work and the like can be easily performed.

When the narrow guide 21 is switched from the storage posture b to the working posture a, when the lower step 18 is swung from the storage posture B to the use posture A side by a predetermined angle,
By rotating the narrow guide 21, the posture can be easily switched. At this time, the fulcrum shaft 23 is used for positioning and fixing the narrow guide 21 in the use posture a or the storage posture b.
Is performed by the frictional force between the narrow guide 21 and the bracket 22 and the holding of the holders 26a and 26b. That is, when the narrow guide 21 assumes the use posture a or the storage posture b, it is held by the holder 26a or the holder 26b and It is held in either posture by frictional force.

[0022]

According to the structure of the present invention configured as described above according to the present invention, it has narrow guide is provided in the variable dynamic step
Therefore, when working such as cutting is used without storing the movable step
In this state, the narrow guide is made to function, and when the crawler is replaced or maintenance is performed, the movable step is stored and the narrow guide is swung upward, so that a working space can be easily secured when necessary. Maintenance work and the like can be easily performed. Especially when the movable step is in use
Alternatively, when the narrow guide can be positioned in the retracted state, the narrow guide can be protruded from the movable step when the movable step is retracted by changing the mounting posture according to the usage state and the retracted state of the movable step. It is possible to change the posture to a storage posture that does not have a space, the narrow guide can be stored in a small space, and the posture of the narrow guide can be easily changed to the use state.

[Brief description of drawings]

FIG. 1 is a right side view of a combine.

FIG. 2 is a front view of the combine.

FIG. 3 is a plan view of a main part of the combine.

FIG. 4B is a right side view of the main part of the step portion,
(A), (c) is BB, AA sectional drawing.

FIG. 5 is a right side view of a main portion of a step portion.

FIG. 6 is a front view of a main portion of a step portion.

[Explanation of symbols]

1 aircraft 3 driver's seat 7 steps 12 Upper step (fixed step) 13 space 17 arms 18 Lower step (movable step) 21 Narrow Guide A state of use B storage status Front and rear width of L1 fixed step (upper step) Front and rear width of L2 space L3 front and rear width of movable step (lower step)

Claims (2)

(57) [Claims] 1. A step (7) for raising and lowering to a driver's seat (3) is provided laterally of the driver's seat (3) in a plurality of vertical steps, and the step (7) is provided on the side of the machine body (1). A movable step (18) comprising a fixed step (12) and a movable step (18) fixed to an arm (17) swingably supported on the machine body (1) side. Is projected to the side of the machine body (1) when in use (A)
As described above, the arm (17) is pivotally attached to the side of the machine body (1) and is attached to the movable step (18) to push the uncut grain culm.
Step for raising and lowering the combine with the narrow guide (21) for the guide . 2. The movable step (18) is in use (A).
Or positionable storage state (B), the mounting position of the narrow guide (21) is changeable adjusted to correspond to the stored state and the use state (A) of the variable dynamic step (18) (B)
Combine lifting step of the 請 Motomeko 1.