JP2002058321A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester which has a guide mechanism capable of guiding in a low frictional resistance state a dustproof cover that can be moved between a position for covering the upper side of a carrier for carrying reaped grain culms from a reaping section to a thresher and a position for opening the upper side of the carrier. SOLUTION: Guide rails 16 attached to a dustproof cover 12 and rollers 17 which are placed in the guide rails 16 and can guide the movements of the guide rails and the dustproof covers 12 are disposed. The outer circumferential surface of each roller 17 supports and guides the upper flange portion 16A of each guide rail 16, and the corner portion 16B of the roller 17 is brought into contact with a crossing corner portion 16C between the upper flange portion 16A and a side web portion 16B to control the lateral displacement of the guide rail 16. The web portion 16B is separated from the side surface of the roller 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a dustproof cover which can be switched between a covering state which covers the upper part of a conveying device for supplying a cut culm to a threshing device and an open state which opens the upper part of the conveying device. Regarding combine.

[0002]

2. Description of the Related Art In the above combine, there is an invention proposed by the present applicant in, for example, Japanese Patent Application No. 2000-26203. The gist is that the base end of the dust cover is swingably supported on the tip of the support arm extended from the fuselage frame side, a guide rail is attached to the dust cover, and the guide rail is slid relative to the guide rail. When the moving roller is attached to the dust-proof plate that moves up and down and swings integrally with the mowing unit, and the dust-proof cover is operated to move the dust-proof cover forward from a state where the transport device is covered with the dust-proof cover,
The dust cover is switched to the open state when the guide rail slides with respect to the roller. In the above configuration, as shown in FIG.
6, the channel-shaped upper flange portion 1
6A was relatively rotated in contact with the downward surface and the inner surface of the web portion 16B.

[0003]

The roller 1
Since the roller 7 rolls in contact with the two inner surfaces 16 </ b> A and 16 </ b> B of the guide rail 16, the frictional resistance is large and a large force is required to move the dust cover 12. SUMMARY OF THE INVENTION An object of the present invention is to provide a combine that can reduce the movement resistance of the dust-proof cover and suppress the lateral displacement of the dust-proof cover when moving.

[0004]

According to a first aspect of the present invention, a support arm is provided for supporting a base end of the dustproof cover in the covering state and the open state. One of a pair of left and right guide rails and a guide body that slides relative to each of the guide rails is attached to the tip of the dust cover, and the dust cover is movably attached to the tip of the dust cover. Supporting, the guide rail, a guide portion that contacts a guide surface of the guide body, a side surface portion facing a side surface of the guide body, and a corner portion where the side surface portion and the guide portion are connected, While the corner portion is in contact with the side surface of the guide body to restrict the lateral displacement movement of the guide body, the corner portion is in contact with the corner portion of the guide body where the side surface and the guide portion are connected. And said There the side surface portion of the Idoreru in that is formed in the shape away from a side surface of the guide body, the effects thereof are as follows. [Operation] The guide section of the guide rail and the guide surface of the guide body are brought into contact with each other to allow the relative sliding movement of the guide rail and the guide body, and the corner of the guide rail is brought into contact with the corner of the guide body. With this configuration, the lateral displacement of the dustproof cover can be restricted, so that the side surface of the guide and the side surface of the guide rail can be separated. Thereby, the side surface of the guide body and the side surface portion of the guide rail can be separated from each other, so that the frictional resistance can be reduced by an amount resulting from the contact between the two. [Effect] Therefore, it is only necessary to exert the function of restricting the lateral movement of the dust-proof cover. By limiting the contact portion of the guide rail side to the side surface to the guide body to a portion having a small area only at the corner portion. In addition, the moving resistance of the dust cover can be reduced, and the dust cover can be moved lightly without meandering.

According to a second aspect of the present invention, in the configuration of the first aspect, the guide rail is formed to have a substantially channel-shaped cross section, and the inner surface of the flange portion of the guide rail is connected to the guide body. In the guide that guides
Forming a web portion of the guide rail on a side surface portion facing a side surface of the guide body, and forming a connection portion between the flange portion and the web portion at a corner portion contacting a corner portion of the guide body; The point formed between the portion and the web portion is formed to be larger than the angle of the corner portion of the guide body, and the operation and effect are as follows. [Effects] In other words, while adopting a channel shape that can be easily manufactured as a guide rail, the guide surface of the guide body is brought into contact with the flange portion, and the corner formed at one end of the flange portion is formed at the corner of the guide body. By making the included angle between the web portion and the flange portion facing the side surface of the guide body larger than the corner portion of the guide body in a state in which
A configuration that avoids contact between the side surface of the guide body and the web portion could be adopted. In order to avoid the contact between the side surface of the guide and the web portion, it was only possible to perform a simple modification of changing the angle between the web portion and the flange portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, planted cereals are raised and processed by a plurality of raising devices 1 arranged side by side in the machine body, and are clipped by a clipper-type cutting device 2. The main frame 6 of the cutting section 5 which is transported rearward by the transport device 3 including the nipping transport device acting on the side and the engaging transport device acting on the tip side, and is supplied to the threshing feed chain 4a of the threshing device 4. The crawler-type traveling device 7 and the driver's seat 8
, A support unit 9 located on the side of the driving unit of the traveling body provided with the threshing device 4 and in front of the threshing device 4
And a lift cylinder 10 connected to the main frame 6 to form a combine. That is, the harvesting unit 5 cuts the planted grain culm such as rice and wheat, supplies the harvested grain culm to the threshing unit 4, and threshes the cut grain culm by the handling cylinder that rotates in the threshing unit of the threshing unit 4. I have to do it. Further, the mowing unit 5 is swung around the shaft core 6a with respect to the traveling machine body by the lift cylinder 10 to perform an ascending and descending operation.

As shown in FIGS. 1 and 3, etc., the raising device 1 and the conveying device 3 are formed so as to cover the upper side and the lateral side of the front portion, and are also used for removing the culm fixed to the raising device 1 and the like. The dustproof plate 11 is provided in the cutting unit 5, and the dustproof plate 11 and the threshing device 4 above the grain culm transport path through which the transport device 3 transports the harvested grain culm to the threshing device 4.
The dustproof cover 12 is configured to cover the space between the stalks and the dust generated by the cutting unit 5 and generated from the stalks to be cut and transported.
1 and the dustproof cover 12 prevent the culm planted on the uncut ground from falling into the cutting unit 5 while avoiding the fall.
1, so that work can be performed while preventing it.

As shown in FIGS. 2 and 4, the dust-proof cover 12 is attached to a single support arm 13 that supports the rear end of the dust-proof cover 12, and a pair of left and right support members that supports the front end of the dust-proof cover 12. It is performed by a mounting structure including 14,14. That is, the support arm 13 is an arm in which a sheet metal base 13a is rotatably connected to one end of a base end 6b of the main frame 6 rotatably connected to the support 9 of the traveling body. It is composed of a main body and a cover supporting portion 13b made of a pipe material having one end connected to the free end of the arm main body. Cover support 13
connecting member 15 which is fitted to both ends of b in a relatively rotatable manner.
The respective mounting seats are fastened and fixed to the rear surface of the rear end of the dustproof cover 12 with mounting screws. In other words, the support arm 13 swings in the longitudinal direction of the body with respect to both the cutting section 5 and the traveling body around the same axis as the axis 6a for swinging the cutting section 5 up and down with respect to the traveling body. So that the support arm 13 is supported by the main frame 6 of the mowing unit 5, and the rear end side of the dustproof cover 12 is attached to the free end side of the support arm 13 around the machine body lateral axis 13 c of the cover support unit 13 b. It is connected to rotate.

As shown in FIG. 3, a guide rail 16 extending in the front-rear direction of the machine body is fixed to both lateral sides on the back side of the dust-proof cover 12 with mounting screws, so that the dust-proof cover 12 is fixed.
In addition, a pair of left and right guide rails 16, 16 swinging with respect to the support arm 13 around the shaft core 13 c is provided on the dustproof cover 12. Each of the pair of left and right support members 14, 14 is provided with a roller (an example as a guide) 17 rotatably inserted into one of the guide grooves of the pair of left and right guide rails 16, so as to be rotatable to the upper end side. The lower end is formed of a sheet metal member which is fixedly fastened to a support member 18 to which the upper end of the dustproof plate 11 is fixed by a mounting screw. Thereby, the left and right support members 14, 14
Are fixed to the dust-proof plate 11 in a state in which they are slidably engaged with the guide rail 16 in the longitudinal direction of the fuselage and relatively immovable in the vertical direction of the fuselage. In other words, the front side of the support point of the dustproof cover 12 supported by the support arm 13 is moved in the front-rear direction above the dustproof plate 11, and is pushed up and down by the dustproof plate 11. A pair of left and right guide rails 1
It is supported by the dustproof plate 11 via the supporting members 6 and 16 and the supporting members 14 and 14.

As shown in FIGS. 2 and 6, a catcher made of a leaf spring material bent and formed on a support portion 19a provided on a support column 19 fixed to a traveling body so as to support an operation panel and the like of an operation portion. The body 20 is fastened and fixed by mounting screws. When the support arm 13 swings around the axis 6a and the dust-proof cover 12 is in the mounting position in which the dust-proof cover 12 is in the closed position for covering the space between the dust-proof plate 11 and the threshing device 4 above the grain culm transport path, the arm of the support arm 13 is set. The free end side of the main body enters between the support plates of the catcher body 20. Then, the catcher body 20 holds the arm body of the support arm 13 between the left and right support plate portions and holds the support arm 13 in the mounting posture so as not to swing easily from this posture,
With this arm holding, the dustproof cover 12 is held at the closed position. When the support arm 13 is swung forward from the holding state against the holding force exerted by the catcher body 20, the arm body of the support arm 13 comes out of the catcher body 20, and the support arm by the catcher body 20 is moved. 13 is released.

That is, the support arm 13 is moved forward and backward by operating the operating tool 21 attached to the right side of the upper surface on the rear end side of the dustproof cover 12 so that the hand can be easily reached from the operating unit. The dust cover 12 swings back and forth around the shaft core 6a, and the dustproof cover 12
The dustproof plate 11 is moved as shown in FIG.
The state is switched between a covering state that covers the space between the threshing device 4 and the open state that opens the space between the dust-proof plate 11 and the threshing device 4 as shown in FIG. 5. The dust-proof plate 11 and the dust-proof cover 12 prevent the dust generated in the mowing part 5 from rising so as to prevent the dust generated in the mowing part 5 from rising. At this time, when the raising and lowering operation of the cutting unit 5 is performed on the headland or the like, the mounting frame in which the main frame 6 of the cutting unit 5 swings relatively to the support arm 13 and the dustproof cover 12 covers the support arm 13. And the dust-proof plate 11 enters or exits the dust-proof cover 12 while pushing up or down on the front end side of the dust-proof cover 12 via the support member 14 and the guide rail 16. The mowing unit 5 moves up and down in a state where the cutting is performed. When the mowing part 5 descends, even if an opening operation force acts on the dust-proof cover 12 due to friction between the support member 14 and the guide rail 16, the dust-proof cover 12 keeps the state covered by the holding action of the catcher body 20. . Then, when performing pillow handling, the dustproof cover 12 is switched to the open state, and the cut culm is removed from the dustproof plate 11 and the threshing device 4.
This space is opened so that the feed can be supplied to the starting end of the threshing feed chain 4a.

The catcher body 22 shown in FIGS.
Is supported by a mounting member extending from the frame material of the mowing part 5 and is used for pillow handling or the main frame 6.
The dustproof cover 12 is held open when the mowing part 5 is separated from the traveling machine body by removing the mowing part 5 from the support body 9. That is, when the dust cover 12 is opened, the arm body of the support arm 13 enters between the holding plate portions of the catcher body 22, and the catcher body 22 sandwiches the arm body between the left and right holding plate portions. Is held in its mounting position so as not to swing easily from this position.

Next, the structure of the guide rail 16 will be described. As shown in FIG. 7, the left and right guide rails 16,
Numeral 16 is formed in a substantially channel shape, and has openings for opening the internal space arranged so as to face each other. The lower surface of the upper flange portion 16A of the upper and lower flange portions 16A, 16A of the guide rail 16 is formed as a guide portion that contacts and guides the roller 17, and the web portion 16B of the guide rail 16 faces the side surface of the roller 17. On the side
A connecting portion between the upper flange portion 16A and the web portion 16B is formed at a corner portion 16C which comes into contact with the corner portion 17a of the roller 17, and the included angle θ between the upper flange portion 16A and the web portion 16B is used as a guide. The angle is set to 90 ° or more so as to be larger than the angle α of the corner 17 a of the roller 17, and the web portion 16 </ b> B is formed to open outward. With the above configuration, the left and right guide rails 16, 16
The right and left rollers 17, 17 have their corners 17a, 17a restricting the left-right displacement, and the side surface of the roller 17 and the web of the guide rail 16 are separated from each other. Is reduced.

Although the angle of the corner 17a of the roller 17 is set to 90 °, if the angle α of the roller corner 17a is larger than 90 °, the included angle θ of the guide rail 16 is further increased. Must be set. Lower flange 16
The connection angle between A and the web portion 16B is set to approximately 90 °, and when the dust-proof cover 12 moves up with respect to the roller 17, the rolling surface of the roller 17 moves to the lower flange portion 16A.
And restricts upward movement of the dust-proof cover 12.

[Other Embodiments] (1) Another embodiment of the guide rail 16 will be described. As shown in FIG. 8A, the configuration of the web portion 16B of the guide rail 16 may be such that a portion below the connection portion with the corner portion 16C is provided to be separated from the side surface 17A of the roller 17. . (2) As another configuration, as shown in FIG. 8B, the configuration of the web portion 16B is a corner portion 16C.
A configuration may be adopted in which the lower portion is formed in a dome shape that protrudes laterally, and is maintained in a state separated from the side surface 17A of the roller 17. (3) In the above embodiment, the guide rail 16 is attached to the dustproof cover 12 and the roller 17 is attached to the dustproof plate 1.
1, the guide rail 16 may be attached to the dustproof plate 11 and the roller 17 may be attached to the dustproof cover 12. In any case, one of the guide rail 16 and the roller 17 is attached to the dust-proof cover 12, and the other is attached to a portion that does not move relative to the dust-proof cover 12. The part that does not move relatively means that it is not an absolutely fixed part because the dust-proof plate 11 rises and swings integrally with the mowing part. (4) Although the roller 17 is used as a guide body that slides relative to the guide rail 16, the guide body may be not only rolling but also non-rolling. However, it is necessary to have a smooth guide surface as a guide. (5) The swing fulcrum position of the support arm 13 is set to the same position as the swing fulcrum 6a of the main frame 6, but may be set to a position different from the swing fulcrum 6a. However, it is preferable to provide the swing fulcrum position of the support arm 13 as close to the swing fulcrum 6a of the main frame 6 as possible. When the mowing unit 5 swings up and down around the swing fulcrum 6a, the dustproof cover 12 swings smoothly.

[Brief description of the drawings]

FIG. 1 is a side view of the front part of the combine.

FIG. 2 is an explanatory view of a closed state of a dustproof cover.

FIG. 3 is a plan view of a dustproof cover.

FIG. 4 is a front view of a mounting structure of a dustproof cover.

FIG. 5 is an explanatory view of an opened state of a dustproof cover.

FIG. 6 is a plan view of a catcher body.

FIG. 7 is a longitudinal sectional view showing the structure of a guide rail.

FIG. 8 is a longitudinal sectional view showing another embodiment of a guide rail.

FIG. 9 is a longitudinal sectional view showing a conventional structure of a guide rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Conveying device 4 Threshing device 12 Dustproof cover 13 Support arm 16 Guide rail 16A Guide part 16B Side part 16C Corner part 17 Guide 17A Side 17a Corner

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor: Tamotsu Seiya 64, Ishizukita-cho, Sakai City, Osaka Prefecture Inside the Kubota Sakai Plant (72) Inventor: Tomoya Matsubayashi 64, Ishizukitacho, Sakai City, Osaka Prefecture In-house F-term (reference) 2B076 AA03 BA05 BC05 CB02

Claims (2)

[Claims] 1. A combine having a dustproof cover that can be switched between a covering state that covers an upper part of a transporting device that supplies a harvested grain culm to a threshing device and an open state that opens the upper part of the transporting device. A supporting arm for supporting a base end of the dustproof cover over the covering state and the open state, and a distal end of the dustproof cover is positioned relative to a pair of left and right guide rails and each of the guide rails. One of a sliding guide member and a sliding member attached to a tip portion of the dustproof cover to movably support the dustproof cover, and a guide portion contacting the guide surface of the guide member with the guide rail; A side surface portion facing the side surface of the guide body and a corner portion connecting the side surface portion and the guide portion are provided, and the corner portion is brought into contact with the side surface of the guide body to move the guide body laterally. While regulating, the side portion of the guide rail is formed in a shape separated from the side surface of the guide body in a state where the corner portion is in contact with a corner portion where the side surface and the guide portion of the guide body are connected. Combine. 2. A guide rail having a substantially channel-shaped cross section, wherein an inner surface of a flange portion of the guide rail faces a guide portion for guiding the guide member, and a web portion of the guide rail faces a side surface of the guide member. A connection portion between the flange portion and the web portion is formed on a side portion and a corner portion abutting on a corner portion of the guide body, and the included angle between the flange portion and the web portion is determined by the guide. The combine according to claim 1, wherein the combine is formed to be larger than the angle of the corner of the body.