JP2004113084A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester with which even if a spindle member is installed in the vicinity of the horizontal central axis of a reaping part frame, the flexural strength of the reaping part frame is readily secured and the position of the reaping part is hardly shaken when the position of the reaping part is changed around a longitudinal central axis. <P>SOLUTION: The combine harvester has constitution that the reaping part 5 is vertically shakingly supported around the horizontal central axis X on the reaping part frame 9, the spindle member 21 for shakingly supporting one end of the reaping part frame around the longitudinal central axis P is integrally rotatably arranged and the reaping part is supported in a position changeable from a reaping operation position to an open state in a state in which the interlocking between the reaping part frame and a driving and shaking mechanism is released. The combine harvester is equipped with a retaining means 29 for retaining the reaping part at the middle position of a fixed shaking range in a position change. The retention means is detachably equipped with a compression support lever 32 installed in the oblique direction from a frame part 30 at the side closer to the front of the main body than to the horizontal central axis of the reaping part frame to the a spindle part 30 lower than a horizontal central axis X. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a cutting unit is mounted at a front portion of a traveling machine equipped with a threshing unit, and a cutting unit that cuts planted grain culms and supplies and supplies the cutting unit with the threshing unit is provided. A mowing unit frame that supports the mowing unit frame so as to freely swing up and down around the cutting unit frame, and a driving swing mechanism that drives and swings the mowing unit frame around the horizontal axis over a predetermined swing range in conjunction with the mowing unit frame. Is provided so as to be releasable, and a support shaft member that supports one end side in the machine width direction of the reaping unit frame so as to be swingable around a vertical axis is provided so as to rotate integrally with the reaping unit frame, In a state in which the interlock between the drive swinging mechanism and the mowing portion frame is released, the mowing portion is moved between a mowing work position located in front of the traveling machine and an open position for opening the front of the traveling machine. To change the posture around the vertical axis. And, when the posture changes in the vertical axis about the reaper relates combine to the reaper is provided with holding means for holding the intermediate position of the predetermined swinging range.
[0002]
[Prior art]
In the combine, the harvesting unit supports the cutting unit so that the posture can be changed around the vertical axis between the cutting posture and the opening posture so that the front part of the traveling machine can be maintained with good workability. It is necessary to release the linkage between the drive swing mechanism and the reaper section frame when changing the position of the reaper about the vertical axis, so the reaper lowers to a lower position, and If the posture is changed around the orientation axis, there is a risk of contact at the edge of the ridge.
Therefore, in order to prevent such a situation, a holding means for holding the mowing portion at an intermediate position within a predetermined swing range is provided.
The conventional holding means is provided with a downward surface at a position away from the lateral axis of the mowing portion frame forward of the fuselage, and at a position spaced below the lateral axis of the support shaft member, When the posture of the mowing part is changed around the vertical axis, the mowing part frame is driven to swing upward by the drive rocking mechanism so that the mowing part frame faces downward. After the block-shaped lock member is sandwiched between the surface and the upward surface of the spindle member, the linkage between the drive swing mechanism and the mowing portion frame is released, and the mowing portion is held at an intermediate position within a predetermined swing range. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2002-95335 (paragraph numbers [0025] to [0027], FIG. 13)
[0004]
[Problems to be solved by the invention]
For this reason, the support shaft member is integrated with the reaping unit frame near the horizontal axis so that one end of the reaping unit frame in the machine width direction can be swingably supported around the vertical axis with a simple structure. As the pivot member is provided, the position where the lock member is sandwiched is closer to the lateral axis, so that the lock member is supported by the lower surface of the reaper section frame in a state where the drive swinging mechanism and the reaper section frame are disengaged from each other. When the mowing part is sandwiched between the shaft member's upward surface and the mowing part is held at an intermediate position within the predetermined swing range, the mowing part largely overhangs in a cantilever shape, and when the posture of the mowing part is changed around the vertical axis center. However, there is a disadvantage that a large bending moment is generated in the reaping unit frame and it is difficult to secure the bending strength, and the posture of the reaping unit is likely to fluctuate.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a mowing shaft member so that one end of the mowing portion frame in the machine width direction can be swingably supported around a vertical shaft center with a simple structure. Even if the mowing part is installed so as to rotate integrally near the horizontal axis, it is easy to secure the bending strength of the mowing part frame and the posture of the mowing part fluctuates when the posture of the mowing part changes around the vertical axis. The purpose is to make it difficult.
[0005]
[Means for Solving the Problems]
A feature of the invention according to claim 1 is that, in the front part of the traveling machine equipped with the threshing unit, a cutting unit that cuts the planted grain culm and transports it to the threshing unit is arranged. A driving swing mechanism for providing a cutting unit frame that supports the cutting unit frame so as to be able to swing up and down around the horizontal axis in the machine body width direction and drivingly swings the cutting unit frame around the horizontal axis over a predetermined swing range. An interlock with the reaping unit frame is releasably provided, and a spindle member that supports one end of the reaping unit frame in the machine width direction so as to be swingable around a vertical axis is integrally rotated with the reaping unit frame. In the state where the interlocking of the drive swing mechanism and the mowing portion frame is released, the mowing portion is moved in a mowing work posture located in front of the traveling main machine and in front of the traveling main machine. The vertical axis centered over the open position to open A combiner provided with holding means for supporting the cutting unit at an intermediate position of the predetermined swing range when the cutting unit changes the position around the vertical axis. A compression that is installed in a diagonal direction between a frame portion of the reaping portion frame that is further forward than the horizontal axis and a support shaft portion of the support member that is lower than the horizontal axis. The present invention is characterized in that a supporting rod is detachably provided to constitute the holding means.
[0006]
[Action and effect]
When the posture of the reaper is changed around the vertical axis, the drive oscillating mechanism drives the reaper frame upward and swings, so that a frame portion further away from the lateral axis of the reaper frame toward the fuselage front side, The compression support rod is laid diagonally over the support shaft portion that is lower than the horizontal shaft center of the support shaft member, and then the interlock between the drive swing mechanism and the reaper section frame is released, and the reaping is performed. Can be held at an intermediate position of the predetermined swing range, so that the support member is fixed to the cutting section so that one end of the cutting section frame in the machine width direction can be swingably supported around the vertical axis with a simple structure. Even if the frame is provided so as to rotate integrally near the horizontal axis, the overhang of the mowing portion can be reduced, and the bending strength of the mowing portion frame when the posture of the mowing portion changes around the vertical axis. And the position of the reaping unit is difficult to fluctuate. .
[0007]
According to a second feature of the present invention, both ends of the compression support rod are detachably fitted to the frame portion and the support shaft portion from the longitudinal direction of the compression support rod. The point is that it is structured.
[0008]
[Action and effect]
When the posture of the mowing part is changed around the vertical axis, the mowing part frame is driven upward by the driving rocking mechanism so that one end of the compression support rod in the longitudinal direction is one of the frame part and the support part. The mowing part frame is pivoted downward by its own weight or by a driving rocking mechanism while the other end part is opposed to the remaining part, so that both ends of the compression support rod are frame parts. The compression support rod can be erected in an oblique direction by fitting to the shaft portion and the shaft portion.
Therefore, the compression support rod can be easily installed obliquely in the oblique direction over the frame portion and the support shaft portion without using a fixing tool such as a bolt or a pin in a state where the compression support rod is prevented from coming off.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show an example of a combine according to the present invention, in which a threshing unit 1 and a boarding operation unit 2 projecting forward are mounted on the left and right, and a traveling machine 4 having a crawler traveling device 3 is provided. In the section, a cutting section 5 that cuts the planted grain culm and transports it to the threshing section 1 is disposed on one side of the boarding operation section 2 on the left and right sides.
[0010]
The cutting unit 5 raises the planted grain culm, raises the stem with the device 6, cuts the root of the stock with the cutting device 7, and conveys the feed to the feed chain 1 a of the threshing unit 1 with the conveying device 8. A cutting section frame 9 for supporting the cutting section 5 so as to be able to swing up and down around a horizontal axis X in the machine body width direction, and a drive for swinging the cutting section frame 9 up and down over a predetermined swing range around the horizontal axis X. The oscillating mechanism 10 is provided, the mowing unit 5 is provided so as to be capable of driving and oscillating, and the weeding device 35 is provided on the uncut side of the mowing unit 5.
[0011]
The weeding device 35 supports a weeding rod 36 provided from near the front end of the raising device 6 to near the rear end of the crawler traveling device 3, and supports the weeding rod 36 on the lateral side of the mowing unit 5. A portion 37 is rotatably supported around a longitudinal axis Y, and is provided so as to be freely switchable between a weeding action posture extending laterally of the machine body and a storage posture attracted to the machine body side.
[0012]
The weeding rod 36 includes a tubular front weeding rod portion 36a extending from the weeding rod support portion 37 near the lateral axis X, and a tube extending from near the lateral axis X to near the rear end of the crawler traveling device 3. 12, and a fitting shaft member 39 provided on the front end side of the rear part grass rod portion 36b is attached to the rear end side of the front part grass rod part 36a as shown in FIG. By fitting the wing bolt 41 inserted into the through hole 43 of the front portion grass rod portion 36 a into the screw hole 38 of the fitting shaft member 39 by fitting into the fitting hole 40 provided, the rear portion grass rod portion is formed. 36b is provided detachably.
[0013]
As shown in FIGS. 4 to 6, the reaping unit frame 9 is supported on a reaping unit support frame 13 erected on the machine frame 12 of the traveling machine 4 so as to be rotatable around a lateral axis X. A front-rearward cylindrical frame 9B directed downward and forward of the fuselage in a direction perpendicular to the horizontal axis X is integrally connected to the cylindrical frame 9A. 9B is connected so that the inside can communicate with each other, and is also used as a transmission case of the transmission mechanism 14 of the reaper 5.
[0014]
The reaper support frame 13 is configured by fixing the left and right support structures 15R and 15L to the machine frame 12 and connecting the left and right support structures 15R and 15L with a reinforcement frame 16. As shown in the figure, the end of the sideways tubular frame 9A on the boarding operation section 2 side in the body width direction is rotatably supported by a swingable openable and closable bearing portion 17 provided on the support structure 15R. The other end of 9A is rotatably supported by a reaper holder 18 provided on the support structure 15L.
[0015]
As shown in FIG. 7, the bearing portion 17 integrally forms a holder 19 for mounting and supporting the horizontal tubular frame 9A on the support structure 15R in a state of allowing relative movement to the front side of the fuselage. At the same time, the horizontal tubular frame 9A mounted on the holder 19 swings between an open swing position allowing the mounting and detaching of the horizontal tubular frame 9A and a closed posture preventing the horizontal cylindrical frame 9A mounted on the holder 19 from falling off. An opening and closing fastener 20 is provided.
[0016]
The mowing portion holder 18 is integrally fixed to an upper portion of a spindle member 21 rotatably supported around a vertical axis P by a support structure 15L. The mowing portion frame 9 is provided so as to rotate integrally with the mowing portion frame 9, and one end side of the mowing portion frame 9 in the machine width direction is supported so as to be swingable around a vertical axis P.
[0017]
As shown in FIG. 8, the support shaft member 21 is rotatably inserted into the support structure 15L, and its lower end is placed on the machine frame 12 to support the load. The small-diameter portion 22 formed at the lower end of the support shaft member 21 is rotatably fitted into the machine frame 12, and the vicinity of the upper end of the support shaft member 21 is fixed to the top plate 23 of the support structure 15L. The pivot member 21 is rotatably inserted to prevent the spindle member 21 from falling down, and the spindle member 21 is slidably abutted on the lower surface of the top plate 23 so that the cutting unit 5 is in a cutting operation position in a cutting operation posture. A pair of front and rear stoppers 21a for preventing the support shaft member 21 from falling back and forth are bolted.
[0018]
Further, the lock pin 24 attached to the mowing portion holder 18 is dropped by its own weight into a lock hole 25 formed in the top plate 23 of the support structure 15L, and inserted into the lock hole 25. A lock mechanism 26 is provided for restricting swinging and selectively fixing the reaping unit 5 to a reaping operation position in a reaping operation position or a maintenance operation position in an open position.
[0019]
The drive rocking mechanism 10 raises the mowing part 5 against its weight with the supply of hydraulic oil to the hydraulic cylinder 11 interposed between the machine frame 12 and the front-rearward cylindrical frame 9B, A connecting pin for connecting the hydraulic cylinder 11 and the front-rearward cylindrical frame 9B as shown in FIG. 9 is configured so that the mowing unit 5 is lowered by its weight in accordance with drainage from the hydraulic cylinder 11. By removing 27, the linkage with the reaping section frame 9 can be released freely.
[0020]
Then, the connection pin 27 connecting the hydraulic cylinder 11 and the front-rear-facing cylindrical frame 9B is removed to release the interlock between the drive swing mechanism 10 and the mowing unit frame 9 and to transmit the transmission case 14 in the transmission mechanism 14. The power transmission belt for transmitting the power from the motor to the input pulley 28 is removed, and the fastener 20 of the bearing 17 is switched to the open swinging posture, so that the mowing unit 5 is moved from the traveling main machine 4 as shown in FIG. The mowing work posture positioned in the front and an opening for opening the front of the traveling machine 4 with the rear grass rod portion 36b removed from the front grass rod portion 36a so that the rear grass rod portion 36b is not in the way as shown in FIG. The posture is supported so that the posture can be changed around the vertical axis P over the posture, and as shown in FIG. Holding means 2 for holding at an intermediate position between A is provided.
[0021]
As shown in FIG. 11, the holding unit 29 is separated from a frame portion 30 that is further away from the lateral axis X of the mowing unit frame 9 toward the fuselage front side and below a horizontal axis X of the support shaft member 21. A compression support rod 32, which extends in an oblique direction across the support shaft portion 31, is provided so as to be detachable.
[0022]
The compression support rod 32 is formed at both ends thereof with fitting recesses 33 opening outward in the longitudinal direction, and fitting projections are provided on each of the frame portion 30 and the support shaft portion 31. As shown in FIG. 11 (a), the mowing portion frame 9 is driven to swing upward by the drive swinging mechanism 10 so as to form a concave portion formed at one end of the compression support rod 32, as shown in FIG. The cutting frame 9 is fitted with the projection 33 provided on the frame portion 30 or the support shaft portion 31, and the recess 33 formed on the other end is opposed to the projection 34 provided on the remaining portion. As shown in FIG. 11 (b), both ends of the compression support rod 32 are provided with the convex portions 34 provided on the frame portion 30 and the convex portions 34 provided on the support shaft portion 31, as shown in FIG. And from the longitudinal direction of the compression support rod 32, The compression support rod 32 can be installed obliquely in a state where the compression support rod 32 is prevented from coming off by the weight of the mowing part 5.
[0023]
[Other embodiments]
1. The holding means provided on the combine according to the present invention is configured such that one end of the compression support rod is connected to the frame portion or the support shaft portion so as to be vertically swingable, and the compression support rod is supported when the posture of the mowing portion is changed around the vertical axis. The other end of the rod may be configured to be connected to the remaining part, and a compression support rod that is installed in an oblique direction across the frame part and the support shaft part may be detachably provided.
2. The holding means provided in the combine according to the present invention is characterized in that fitting projections are formed at both ends of the compression support rod, and fitting recesses are integrally provided in each of the frame portion and the support shaft portion, so that both ends of the compression support rod are provided. May be configured to be detachably fitted to the frame portion and the support shaft portion from the longitudinal direction of the compression support rod.
3. The holding means provided on the combine according to the present invention may be configured such that both ends of the compression support rod are connected to the frame portion and the support shaft portion by connecting pins or the like, and the compression support rod is detachably provided.
[Brief description of the drawings]
FIG. 1 is a side view of a combine. FIG. 2 is a plan view of a combine. FIG. 3 is a plan view of a combine in a state where a cutting unit is changed to an open position. FIG. 4 is a front view of a main part of the cutting unit in a cutting operation posture. FIG. 5 is a plan view of a main part of the mowing part in a mowing work posture. FIG. 6 is a partial cross-sectional plan view of a main part of the mowing part in a mowing work posture. FIG. 7 is a partial cross-sectional side view of a main part. 9 is a side view of a main part. FIG. 10 is a plan view of a main part of a mowing part in an open position. FIG. 11 is a partial cross-sectional side view of a main part. FIG. 12 is an explanation of a main part. Figure [Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 threshing section 4 traveling machine 5 cutting section 9 cutting section frame 10 drive swinging mechanism 21 support member 29 holding means 30 frame section 31 support section 32 compression support rod P vertical axis X horizontal axis X

Claims (2)

At the front of the traveling machine equipped with a threshing unit, a mowing unit is arranged to mow the planted grain culm and to feed the threshing unit to the threshing unit,
A drive for swinging the cutting section frame around the horizontal axis in a predetermined swing range while providing a cutting section frame that supports the cutting section so as to be vertically swingable around a horizontal axis in the machine body width direction. A swing mechanism is provided so as to be able to release the interlock with the mowing unit frame,
A support shaft member that supports one end in the machine width direction of the mowing unit frame so as to be swingable around a vertical axis is provided so as to rotate integrally with the mowing unit frame. In a state in which the linkage with the reaping unit frame is released, the reaping unit moves the vertical axis center over a reaping work posture located in front of the traveling machine and an open posture for opening the front of the traveling machine. Support to change posture around,
A combine provided with holding means for holding the cutting unit at an intermediate position of the predetermined swing range when changing the posture of the cutting unit around the vertical axis.
A compression support that is installed in an oblique direction across a frame portion of the reaping portion frame that is further away from the horizontal axis than the horizontal axis and a support portion that is lower than the horizontal axis of the support member. A combine comprising a rod provided detachably to constitute the holding means. The combine according to claim 1, wherein both ends of the compression support rod are configured to be detachably fitted to the frame part and the support shaft part from a longitudinal direction of the compression support rod.

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