JPH07231713A - Combine - Google Patents

Abstract

PURPOSE:To absorb twisting force caused between a sliding shaft and a bearing by going up and down of a reaping part through fluctuation of the bearing. CONSTITUTION:A guide shaft and a sliding shaft 29 to be connected to the front of a threshing part are extended approximately in parallel and slidably coupled. A bearing 34 for holding the sliding shaft 29 slidably on a reaping part is rockingly attached to a combine and the bearing 34 is rocked in linking to the up and down action of the reaping part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for continuously cutting and threshing culms.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open No. 2-52541, a front cover and a rear cover for covering the upper side of a reaping section are provided.
The front cover is fixed at a predetermined position on the upper surface of the mowing section, and the rear cover that is connected to the front side of the threshing section via the hooks that can be engaged and disengaged is attached to the slide shaft that is slidable in the front-rear direction, and the rear cover can be opened and closed. There was technology.

[0003]

SUMMARY OF THE INVENTION The above-mentioned prior art has a structure in which the rear cover is slid forward and backward to open and close, for example, by swinging the front side of the rear cover up and down with the rear part of the rear cover as a fulcrum. In comparison, the rear cover could be opened and damaged due to gusts and other problems, but the pair of front and rear rollers that support the slide shaft to the mowing section are supported in a substantially constant posture relative to the mowing section. Since the raising and lowering fulcrum position of the mowing section and the rear support position of the rear cover are separated, a twisting force is generated between the slide shaft and the roller due to the raising and lowering of the mowing section, and the rear cover is opened and closed due to damage deformation of the slide shaft or the roller section. It does not work smoothly, and the engagement gap between the slide shaft and the roller tends to be large,
There is a problem that the engagement of the hooks for locking the rear cover is likely to be uncertain.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a front cover and a rear cover for covering the upper side of the reaping section are provided, and the front cover is fixed at a predetermined position on the upper surface of the reaping section, and threshing is performed via a hook that can be engaged and disengaged. In a combine in which a rear cover to be connected to the front side of the threshing unit is attached to a slide shaft that is slidable in the front-rear direction, a guide shaft to be connected to the front side of the threshing unit and the slide shaft are extended substantially in parallel and slidably connected to each other. A bearing body for slidably supporting the slide shaft on the mowing section is swingably mounted, and the bearing body is rocked in conjunction with the raising and lowering operation of the mowing section. The twisting force generated between the slide shaft and the bearing body can be absorbed by the swinging of the bearing body, damage and deformation of the slide shaft or the bearing body can be prevented, and the opening / closing operation of the rear cover can be appropriately maintained. Those that can reliably engage the locking hook with a simple structure.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of a bearing body portion, FIG. 2 is a side view of the whole, and FIG. 3 is a plan view thereof. In the figure, (1) is a track frame equipped with a traveling crawler (2), and (3) is A machine stand erected on the track frame (1), a threshing section (4) in which a feed chain (5) is stretched on the left side and a handling cylinder (6) and a processing cylinder (7) are incorporated, Is a mowing unit provided with a cutting blade (9) and a grain-carrying mechanism (10), (11) is a straw processing unit that faces the end of the straw chain (12), (1
3) is a driver's cab provided with a driver's seat (14) and a driving operation unit (15), (16) is an engine arranged substantially below the driver's seat (14), and (17) is an engine from the threshing unit (4). The grain tank for feeding the grains through the frying cylinder (18), (19) is the grain discharging conveyor for taking the grains in the grain tank (17) to the outside, and continuously performing the cutting and the threshing work. Is configured to do.

Further, a hydraulic lifting cylinder (20) for raising and lowering the reaping section (8) is provided, and the reaping section (8) is swung up and down around an elevation fulcrum shaft (21) at the front end of the machine base (3). Front and rear covers (22) that cover the upper surface of the reaper (8)
(23), the front end of the front cover (22) is bolted to the upper surface of the raising gate (24) above the front of the mowing section (8), and the front cover (22) is fixed at a predetermined position on the upper surface of the mowing section (8). It is detachably fixed to.

Further, as shown in FIG. 4, the left and right slide shafts (28) (29) made of iron alloy pipe are connected to the left and right end portions of the front and rear frames (25) (26) having the inverted U-shaped end face via fastening nuts (27). ) With the front and rear ends fixed, use the frame (2
5) A square frame in plan view is formed by (26) and slide shafts (28) (29), and a grain culm transport mechanism (10)
On the upper side, the sensor frame (3
0) is erected, and the left and right brackets (31) and (32) of the sensor frame (30) have cylindrical left and right bearing bodies (33).
The left and right slide shafts (28) and (29) are slidably attached via (34).

Further, cylindrical front and rear bearing bodies (35) (3) are provided on the right side of the right bearing body (34) and the front surface of the right end of the rear frame (26).
6) is fixed, a guide shaft (37) made of an iron alloy pipe is slidably inserted into the front and rear bearing bodies (35) (36), and the guide shaft (28) (29) is substantially parallel to the guide shaft (37). 37)
And the L-shaped bracket (38) is fixed to the front part of the threshing part (4) by bolting, and the bracket (3
8) is rotatably connected to the rear end of the guide shaft (37) through an L-shaped round bar cover fulcrum shaft (39), and slide shafts (28) (29) centered on the cover fulcrum shaft (39). Also, the front end side of the guide shaft (37) is configured to swing up and down.

The hook shaft (42) is rotatably supported by the rear frame (26) via the left and right bearing bodies (40) and (41), and is fixed to the right bracket (32) by welding.
Flat bar-shaped front hook (44) for engaging and disengaging with the locking bar (43) made of round bar, and the cover fulcrum shaft (39)
A flat plate-shaped rear hook (45) that is detachably engaged with the
The right release lever (4) is rotatably supported on the right side of the hook shaft (42) and is operated from the driver's seat (14) side.
6) The base end is welded and fixed to the right side of the hook shaft (42), and the U-shaped left release lever (47) is operated from the feed chain (5) side on the left side of the combine machine body.
Weld fixed to the middle part.

Further, the width of the rear cover (23) is made wider than that of the front cover (22), and as shown in FIG. 1 and the like, the rear cover (2) is provided on the upper surfaces of the front and rear frames (25) (26).
3) Fix the bolts (48) ...
The rear cover (23) is polymerized on the outside of 2), and the rear hook (4) is attached to the cover fulcrum shaft (39) on the front side of the threshing part (4).
5) via the rear cover (23) to support the closed position, while the cutting frame (8) sensor frame (3)
0) is connected to the rear cover (23) via the locking bar (43) and the front hook (44) so as to be supported in the open position.

Further, as shown in FIGS. 5 to 7, a sponge cushion (4) is formed on the lower surface of the front cover (22) rear side.
9) is integrally fixed, and brackets (31) (32) of the sensor frame (30) are provided with pedestals (50) (50),
The front side of the front cover (22) is placed on the upper surface of the pedestal (50) through the cushion body (49) so that the rear portion of the front cover (22) is supported by the sensor frame (30). The front cover (22) can be attached / detached only by attaching / detaching the bolts for fixing the front part and the raising gate (24), and the attaching / detaching work of the front cover (22) can be performed only by the bolt attaching / detaching operation on the front side of the mowing part (8). It is configured so that it can be done.

Also, the inverted U-shaped and U-shaped upper and lower links (51, 52) are laterally bendably connected by a fulcrum pin (51a) in a side view, and the upper link (51) has a left bearing ( 33) is welded and fixed, the lower link (52) is welded and fixed to the upper surface of the left bracket (31), and the collar (53) made of wear-resistant synthetic resin is fitted into the inner hole of the left bearing body (33). , Collar (53) to the left slide shaft (2
8) is inserted, and the left slide shaft (28) is supported by the left bearing body (23) via the collar (53). In addition, taper surfaces (54) (5
4), the inner diameter of the collar (53) is made larger than the outer diameter of the slide shaft (28), and the collar (5) is formed.
3) The angle of the axis of the left slide shaft (28) obliquely intersecting with the axis of the axis is changeably formed, and the sensor frame (30) or the front and rear frames (25) (26) are formed.
Distortion such as a change in the interval between the left and right brackets (31) and (32) or the left and right slide shafts (28) and (29) due to deformation of the slide shaft is absorbed by the bending of the upper and lower links (51) and (52), (28) and (29) or bearings (33) and (34) are configured to prevent deformation and damage.

Furthermore, as shown in FIGS. 1, 8 and 9, inverted U-shaped and U-shaped upper and lower links (55) (56) when viewed from the front.
Are connected by a fulcrum pin (57) so as to be bendable in the front-rear direction, the right bearing body (34) and the front bearing body (35) are welded and fixed to the upper link (55), and the lower link (56) is attached to the right bracket ( 32) by welding and fixing the collars (58) (59) made of wear-resistant synthetic resin to the bearing bodies (34).
Fitted in the inner hole of (35), each collar (58) (59)
Insert each shaft (29) (37) through each collar (58)
Each shaft (29) (37) is connected to each bearing body (3
4) Support by (35).

The front cover (22) is provided with a front cover (22) and a rear cover (23) for covering the upper side of the reaper (8).
The rear cover (23) for fixing the cutting part (8) at a predetermined position on the upper surface and connecting it to the front side of the threshing part (4) through the detachable rear hook (45) is slidable in the front-rear direction. In the combine attached to the slide shaft (29), the guide shaft (37) connected to the front side of the threshing unit (4) and the right slide shaft (29) are slidably connected by extending substantially parallel to each other, and A right bearing body (34) for slidably supporting the slide shaft (29) on the mowing section (8) is swingably mounted in the front-rear direction, and the right bearing body (34) is linked with the raising and lowering operation of the mowing section (8). 34) is rocked back and forth.

As described above, the right bearing body (34) swings back and forth when the cutting unit (8) is moved up and down, and the twisting between the right slide shaft (29) and the right bearing unit (34) caused by the lifting of the cutting unit (8). Since the force is absorbed, the shaft (29) and the bearing body (3
4) and the like can be prevented from being damaged and deformed by the twisting force, and the sliding resistance of the slide shaft (29) can be reduced by interposing the collar (58) with a conventional roller or bearing, and the twisting force can be reduced. By absorbing the above, the collar (58) can be formed elongated in the axial direction.

Further, as shown in FIGS. 6 and 8, the left and right slide shafts (28) (29) have pins (60) (60) at the front ends thereof.
And the pin (60) is fixed by welding.
1) is fixed to the rear surface of the front frame (25) by bolts (62), and the left and right slide shafts (28) (29) inserted through the front frame (25) are fastened with fastening nuts (27) (27). The front frame (25) is clamped from the front and back by the nut (27) and the pin (60), and the front end of each slide shaft (28) (29) is fixed to the front frame (25).

Further, as shown in FIGS. 10 to 13, a release bar (6) which is brought into contact with the front and rear hooks (44) (45).
3) is welded and fixed in the middle of the right release lever (46), and the release position stopper (64) of the front hook (44),
Front and rear hooks (44) (45) engaging position stopper (6
5) and the release position stopper (66) for the rear hook (45)
And each stopper (64) (65) is formed at both ends of a horizontal U-shaped round bar and welded and fixed to the rear frame (26), and the stopper (66) formed by the round bar is formed on the right bearing plate (4).
Welded and fixed to 1).

Further, tension springs (69) and (70) are stretched between the locking pins (67) and (68) of the front and rear levers (44) and (45) and the engagement position stopper (65), and the spring (69 )
The hooks (44) and (45) are elastically pressed against the stopper (65) by (70), and the front hook (4) is attached to the locking bar (43).
4) or the rear hook (4) on the cover fulcrum shaft (39).
5) is engaged and supported, and under the condition of FIG. 13, the right release lever (46) swings forward or the left release lever (4).
By the upward swinging operation of 6), the rear hook (45) is rotated to the position of the stopper (66) against the spring (70) via the release bar (63), and with respect to the cover fulcrum shaft (39). The rear hook (45) is disengaged, and the rear cover (23) is moved forward to open the upper surface of the reaper (8). on the other hand,
When the rear cover (23) in which the front hook (44) is engaged with the locking bar (43) is open, the levers (46) (4)
By the reverse operation of 7), the front hook (44) is rotated to the position of the stopper (64) against the spring (69) via the release bar (63), and the front hook (43) is moved from the locking bar (43). 44) is disengaged and the rear cover (23) is moved backward to close the upper surface of the reaper (8).

As described above, the front and rear hooks (44) (4
By providing the release bar (63) between 5), the hooks (44) and (45) can be unlocked by rotating the single lever (46) or (47). 44, 45, the structure of the levers 46, 47 can be simplified as compared with the case of providing the levers respectively, and erroneous operation of the levers 46, 47 can be reduced, and the rear hook 45 can be used as a cover fulcrum. Since it engages with the shaft (39), the swing of the rear cover (23) and the guide shaft (37) due to the raising and lowering of the reaper (8) and the swing of the rear hook (45) cause the cover fulcrum shaft (39). The cover fulcrum shaft (39) and the rear hook (45) are engaged with each other at one position to reliably support the closed position of the rear cover (23). And the rear hook (45) is disengaged. Prevents, surely perform engagement of the rear hook (45) cover pivot axis (39).

Further, as shown in FIG. 11, a collar (71) made of wear-resistant synthetic resin is fitted into the inner hole of the rear bearing body (36), and the guide shaft (37) is inserted through the collar (71). ,
The guide shaft (37) is supported by the rear bearing body (36) via the collar (71). In this way, the synthetic resin collars (54) (58) (5) through which the slide shafts (28) (29) and guide shafts (37) made of metal pipe are inserted.
9) (71) to bearing bodies (33) (34) (35) (3
6), so that each axis (28) (29) (3
7) allows smooth sliding, and the bearing body (33) ~
The collar (54) (5
8) (59) (71) can be formed in a long shape, and is inserted between the front and rear hooks (44) (45) for locking the rear cover (23) at the front and rear positions, respectively. By providing a release lever (46),
Front and rear hooks (44) by a book release lever (46)
(45) can be released.

[0021]

As is apparent from the above embodiments, the present invention is provided with the front cover (22) and the rear cover (23) covering the upper side of the mowing section (8), and the front cover (22) is cut into the mowing section (8). The hook (4
The rear cover (23) connected to the front side of the threshing unit (4) via the slide shaft (29) slidable in the front-back direction.
In the combine to be attached to, the guide shaft (37) to be connected to the front side of the threshing part (4) and the slide shaft (29) are extended substantially in parallel to be slidably connected, and the slide shaft (29) is cut. A bearing body (34) slidably supported on the portion (8) is swingably attached to the cutting portion (8).
The bearing body (34) is oscillated in association with the raising and lowering operation of the bearing, and the twisting force generated between the slide shaft (29) and the bearing body (34) due to the raising and lowering of the reaper (8) It can be absorbed by swinging of the body (34), damage and deformation of the slide shaft (29) or the bearing body (34) can be prevented, and the opening / closing operation of the rear cover (23) can be appropriately maintained, and the rear cover (23) can be engaged. The hook (45) to be stopped can be securely engaged with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view of a right bearing body portion.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of a rear cover part.

FIG. 5 is a side view of a left bearing body portion.

FIG. 6 is a plan view of the same.

FIG. 7 is a front view of the same.

FIG. 8 is a plan view of FIG.

FIG. 9 is a front view of the same.

FIG. 10 is a side view of a release lever portion.

FIG. 11 is a plan view of the same.

FIG. 12 is a front view of the same.

FIG. 13 is an enlarged view of FIG.

[Explanation of symbols]

 (4) Threshing part (8) Mowing part (22) Front cover (23) Rear cover (29) Right slide shaft (34) Right bearing body (37) Guide shaft (45) Rear hook

Claims (1)

[Claims] 1. A front cover and a rear cover for covering the upper side of the mowing section, wherein the front cover is fixed to a predetermined position on the upper surface of the mowing section, and the rear cover is connected to the front side of the threshing section via a hook that can be detached. In a combine attached to a slide shaft that is slidable in any direction, the guide shaft to be connected to the front side of the threshing unit and the slide shaft are extended substantially parallel to be slidably connected, and the slide shaft is slid to the reaping part. A combine characterized in that a bearing body that is freely supported is swingably attached, and the bearing body is configured to swing in conjunction with the raising and lowering operation of the mowing section.