JP3339783B2 - Pre-processing unit lower limit position adjusting device for combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pre-processing unit comprising a regulating member rotatably provided on a pre-processing unit side of a combine, and a body-side stopper abutting against a locking surface provided on the regulating member. The present invention relates to a lower limit position adjusting device for a pre-processing unit of a combine for changing a setting of an ascending / descending limit position.

[0002]

2. Description of the Related Art Conventionally, a pre-processing unit of a combine is mounted on a fuselage via a support frame rotatably supported on the side of the fuselage so that the pre-processing unit can be moved up and down in multiple stages. A restricting member provided with a locking surface is rotatably supported by the support frame and is provided on the preprocessing unit side. On the other hand, a stopper is provided on the fuselage side for abutting on a predetermined locking surface set by the rotation adjustment of the regulating member and positioning the elevation limit of the preprocessing unit. The height has been set by the contact between the locking surface of the regulating member and the stopper. Then, the worker rotates the regulating member and changes the locking surface that comes into contact with the stopper, thereby changing the ascent / descent height (cutting height) of the preprocessing unit.

[0003]

The regulating member is provided on one of the right and left sides of the support frame. Generally, the cutting height (the height of the pre-processing unit ascending and descending) in the combine before the cutting operation is performed. The support frame is provided on the left side of the support frame so that the adjustment of the control member, that is, the operation of the regulating member is facilitated. However, if the pre-processing unit is configured to be slidable to the left and right with respect to the machine, and the pre-processing unit changes the cutting height during cutting, for example, when the pre-processing unit is set relatively to the left of the machine, the support frame There is a drawback in that it is necessary to operate the regulating member from the left side, that is, the uncut ground side, and it is not possible to easily change the ascent / descent height (cutting height) of the pre-processing unit.

[0004]

According to the present invention, there is provided a combine pre-processing unit lower limit position adjusting device for solving the above-mentioned problems. A regulating member 26 having locking surfaces a to f for rotatably supporting the pre-processing unit 11 and changing the ascending and descending limit position of the pre-processing unit 11 in multiple stages is rotatably supported on the support frame 12, and the above-described regulation is performed. In a combine provided with a stopper 36 provided on the machine body 6 side for contacting with a predetermined locking surface set by the rotation adjustment of the member 26 and positioning the pre-processing unit 11 at the ascending / descending limit, the support frame 12 is moved in the left-right direction. And a support shaft 24 protruding from both ends of the bearing pipe 23 is inserted into the bearing pipe 23 so as to be rotatable in position. The regulating member 26 is attached to one end of the support shaft 24, and the other end is attached to the other end. To It is characterized in that attached to position effect handle 27 on the left and right sides of each supporting frame 12.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The combine shown in FIGS. 1 to 3 is configured such that a threshing unit 3, a driver's seat 4, an engine and the like are arranged on a body frame 2 supported by a pair of right and left crawlers 1, which are traveling devices, to form a body 6. In addition, a pre-processing unit 11 provided with a divider 7, a raising device 8, a cutting blade 9, and a mechanism (not shown) for transporting the cut culm to the threshing unit in front of the machine body 6.
Is provided.

At this time, a support frame 12 forming a part of the pre-processing unit frame is provided extending from the pre-processing unit 11 to the rear, and a rear end of the support frame 12 is provided with a fulcrum shaft 13 on the body 6 side. It is rotatably supported through the shaft. A hydraulic cylinder 16 is pivotally connected to the body 6 via a connecting pin 14, and a piston rod 16 a of the hydraulic cylinder 16 is connected to a mounting seat 12 a protruding from the support frame 12.

That is, the pre-processing unit 11 is supported by the machine body 6 around the fulcrum shaft 13 via the support frame 12 so as to be movable up and down, and is driven up and down by expansion and contraction of the hydraulic cylinder 16. The hydraulic cylinder 16 is configured to extend and contract by the swing operation of the operation lever 10 provided in the driver's seat 4 described above. On the other hand, the pre-processing unit frame includes a horizontal transmission case 17 extending substantially across the entire width of the pre-processing unit 11 slidably connected to the lower end of the support frame 12 in the left and right direction. (The divider 7, the raising device 8, the cutting blade 9, the transport mechanism, etc.) are formed on the transmission case 17 side so as to be supported or swung in accordance with the sliding of the transmission case 17. In addition, a drive shaft to which a driving force is transmitted from the machine body 6 is provided inside the support frame 12, and a transmission shaft 15 connected to the drive shaft by a bevel gear or the like is provided in a transmission case 17. The driving force is input from the transmission shaft 15 to each of the above mechanisms.

That is, the pre-processing unit 11 is slidable left and right with respect to the machine body 6 (support frame 12), so that the position of the pre-processing unit 11 with respect to the machine body 6 can be changed in accordance with a mowing operation. ing. For example, at the time of middle split, by setting the pre-processing unit 11 to the right so that the pre-processing unit 11 is relatively close to the driver's seat 4 as shown in FIG.
The crawler 1 is located at the rear of the cutting streak, so that the crawler 1 can perform middle splitting work without inconvenience such as stepping on uncut grain culm. In addition, as shown in FIG. By setting the pre-processing unit 11 to the left, the crawler 1 is located at a location relatively far from the uncut grain culm (on the side of the cut area), and the crawler 1 does not flush out mud or the like to the uncut grain culm. The cutting operation can be performed without any adverse effect on the cut culm.

On the other hand, as shown in FIGS. 3 and 4, the crawler 1 is driven to rotate by a driving pulley 18 around which the crawler 1 is wound, thereby causing the machine body 6 to travel. It is supported by an axle 21 protruding from a transmission case 19 provided above, and is configured to rotate by a driving force transmitted from the transmission to the axle 21. At this time, the axle 21 is rotatably mounted in an axle case 22 protruding from the transmission case 19 side.

As shown in FIGS. 5 and 6, a bearing pipe 23 in the form of a hexagonal pipe is fixed to the lower side (the end of the pretreatment section) of the support frame 12 and is fixed to the left and right. A cylindrical support shaft 24 in contact with each inner peripheral surface of the bearing pipe 23 is provided in the bearing pipe 2.
A plate whose right end (left end in FIG. 6) protruding from the bearing pipe 23 of the support shaft 24 protrudes from the right and left ends of the support shaft 24 and has a polygonal outer shape. An operating handle 27 having a diameter larger than the diameter of the support shaft 24 is fixed to a left end (right end in FIG. 6) of the regulating member 26.

At this time, as shown in FIG. 4, the handle 27 is located closer to the fuselage 6 than the inner end of the left crawler 1 and has an outer diameter smaller than the maximum outer diameter of the regulating member 26. Of the crawler 1 is relatively large. In addition, as shown in FIG.
Is in contact with the right end face of the bearing pipe 23, and the positioning ring 28 provided on the support shaft 24 is in contact with the left end face of the bearing pipe 23, thereby positioning the support shaft 24 in the left-right direction. The regulating member 26 is located on the right side of the support frame 12, and the handle 27 is located on the left side.

At this time, the regulating member 26 has a part of the outer periphery formed as locking surfaces a to f for changing the lower limit position of the pre-processing unit 11 at the time of elevating and lowering in six steps as described later.
Each of the locking surfaces a to f is parallel to the opposite side of the bearing pipe 23, and the distance from the center of the support shaft 24 to each of the locking surfaces a to f gradually increases from the locking surface a to the locking surface f. I have.

As shown in FIGS. 5 and 6, etc., a hole 29 is formed in the support shaft 24 so as to penetrate the diameter. A spring 31 located at the center and a spring 31 are formed in the hole 29. 31
Ball 3 disposed on both sides of the body and urged outward
2, the support shaft 24, that is, the regulating member 26
The two balls 32 are located at diagonal hexagons on the inner peripheral surface of the bearing pipe 23 so that the bearing pipe 23
It is locked and positioned with respect to the (support frame 12).

When the support shaft 24 is rotated with a predetermined force or more, the ball 32 is supported by the support shaft 2 against the urging force of the spring 31.
4 is resiliently pushed in the center direction, and the support shaft 24 is rotated.
When rotated by an angle located at the diagonal of No. 3, it is locked to the bearing pipe 23 at this position. That is, by rotating the support shaft 24, the bearing pipe 2 of the support shaft 24 is
The position (angle) with respect to 3 can be changed.

On the other hand, a plate-like mounting member 33 is fixed to the outer peripheral surface of the axle case 22 at predetermined intervals in the left-right direction, and the front end portion of the mounting member 33 is sandwiched between the two mounting members 33. A nut 34 is fixed. A stopper 36 having a bolt shape is screwed to the nut 34 with the bolt head 36a facing forward, and another nut 37 for fixing is provided on the outer side of the mounting member 33. It is screwed.

The position of the stopper 36 with respect to the mounting member 33 (adjustment of the distance from the nut 34 fixed to the mounting member 33 to the head 36a of the stopper 36) is freely mounted by means of a double nut formed by the nut 34 and the nut 37. It is fixed to the member 33. That is, the stopper 36 is attached to the machine body 6 via the attachment member 33 so as to be freely adjustable in position.

At this time, the stopper 36 is attached to the mounting member 33 so that the end face of the head 36a of the stopper 36 and one predetermined locking surface of the above-mentioned regulating member 26 abut in parallel when the pre-processing unit 11 descends. When the hydraulic cylinder 16 is contracted and the pre-processing unit 11 is lowered by this, the locking surface corresponding to the stopper 36 on the pre-processing unit 11 side (support frame 12) is provided on the body 6 side. In contact with 36, the ascent / descent limit of the preprocessing unit 11, that is, the cutting height of the preprocessing unit 11 is set.

As described above, each of the locking surfaces a to f of the regulating member 26 is parallel to the opposite side of the bearing pipe 23 and the regulating member 26 is integrally fixed to the support shaft 24. By rotating the shaft 26 integrally with the support shaft 24, the locking surface corresponding to the stopper 36 (contact with the stopper 36) can be changed. Since the distances from the locking surfaces a to f to the support shaft 24 are different from each other, the support shaft 24 is rotated to change the locking surface that comes into contact with the stopper 36 so that the ascending and descending limit (cutting) of the pretreatment unit 11 is reduced. Height) is changed. At this time, fine adjustment of the ascent / descent limit position of the preprocessing unit 11 can be performed by adjusting the position of the stopper 36.

The rotation of the regulating member 26 is performed by rotating the regulating member 26 integrally with the support shaft 24 by holding the regulating member 26 located on the right side of the support frame 12 and by positioning the regulating member 26 on the left side of the support frame 12. By rotating the support shaft 24 with the handle 27, the control member 26 can be easily rotated by rotating the regulating member 26 integrally with the support shaft 24.

Then, as shown in FIG.
When the right side of the support frame 12 is set (for example, during the middle split operation), the handle 27 located on the left side of the support frame 12 is
By rotating the control member 4 (regulation member 26), the rotation of the restriction member 26 can be easily performed as in the related art.
, The setting of the lower limit position of the elevation height, that is, the setting of the cutting height can be easily performed. On the other hand, as shown in FIG. 2, when the pre-processing unit 11 is set to the left, such as during mowing, the hand is cut through the gap between the transmission case 19 and the pre-processing unit 11 so that the cut side (the support frame 12 By operating the regulating member 26 itself from the right side of the drawing) and rotating the regulating member 26, the setting change of the lower limit position of the elevation height of the pre-processing unit 11, that is, the setting change of the cutting height can be easily performed. .

With this arrangement, the worker can change the cutting height during the cutting operation without being hindered by the uncut culm on the uncut land side, and when the cutting height is changed, the operator can remove the uncut culm. It can be easily carried out from the right side of the support frame 12 (the side of the cut ground) without giving an adverse effect such as falling down to the uncut kernels. That is, according to the present invention, the angle of the regulating member 26 can be easily set by rotating the support shaft 24 irrespective of the working state of the combine (sliding movement of the preprocessing unit 11). The setting of the lower limit position (cutting height) can be easily changed.

Since the outer diameter of the handle 27 is smaller than the maximum outer diameter of the regulating member 26 and the distance from the upper surface of the left crawler 1 is relatively large, interference between the left crawler 1 and the handle 27 is prevented. The interference between the conventional regulating member 26 and the crawler 1 can be reduced, and a wide crawler for wet fields can be easily attached.

[0023]

According to the structure of the present invention constructed as described above, the regulating member can be easily rotated by holding the regulating member itself and the operating handle. There is an effect that the setting can be changed on either the left or right side of the support frame. For this reason, the pre-processing unit is configured to be slidable left and right with respect to the aircraft, and the pre-processing unit is set relatively to the left of the aircraft. It can be easily performed from the right side of the support frame which is the side.

[Brief description of the drawings]

FIG. 1 is a front view of a combine during a middle split operation.

FIG. 2 is a front view of the combine during a row cutting operation.

FIG. 3 is a left side view of a main part of a combine front part.

FIG. 4 is a partial cross-sectional view as viewed from the direction indicated by an arrow A.

FIG. 5 is a side sectional view of a main part of a regulating member.

FIG. 6 is a partial cross-sectional view as viewed from a direction indicated by an arrow B.

[Explanation of symbols]

 6 Body 11 Pre-processing unit 12 Support frame 23 Bearing pipe 24 Support shaft 26 Restriction member 27 Handle (operating handle) 36 Stopper a Lock surface b Lock surface c Lock surface d Lock surface e Lock surface f Lock surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-146513 (JP, A) JP-A-3-126433 (JP, U) JP-A-57-141730 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) A01D 34/02-34/408

Claims (1)

(57) [Claims] 1. A support frame (12) for attaching a pre-processing unit (11) to a machine body (6) so as to be able to move up and down freely. A regulating member (2) having locking surfaces (af) for changing the position in multiple stages.
6) is rotatably supported on the support frame (12),
A stopper (36) is provided on the body (6) for abutting on a predetermined locking surface set by the rotation adjustment of the regulating member (26) and for positioning the pre-processing unit (11) at the limit of elevation. In the combine, a bearing pipe (23) is integrally attached to the support frame (12) in the left-right direction, and a support shaft (24) projecting from both ends of the bearing pipe (23) is positioned and rotated on the bearing pipe (23). Insert freely,
The support frame (1) is provided with the regulating member (26) at one end of the support shaft (24) and the operating handle (27) at the other end.
2) The lower limit position adjusting device for the pre-processing unit of the combine which is mounted so as to be located on the left and right sides.