JPH104762A - Structure of threshing chamber in combined harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify and facilitate the operations of opening and closing the front wall in the threshing part in which the front wall of the threshing chamber is made openable and the threshing drum is made detachable. SOLUTION: The upper cover 30 forming a part of the outer side face and the upper face of the threshing chamber 21 is made openable around the rotatable shaft 41 which is set on the inner edge of the upper cover 30 in the longitudinal direction. In addition, the front wall forming the front face of the threshing chamber is made openable around the rotatable shaft 45 which is set on the inner edge of the front wall in the vertical direction. Further, a locking mechanism 36 is installed to releasably connect the front edge of the upper cover 30 to the outer edge of the front wall so that the upper cover 30 and the front wall may be fixable at their closing position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine room handling structure.

[0002]

2. Description of the Related Art Conventionally, in a threshing part of a combine, an upper cover forming the upper surface and side surfaces of a handling chamber is attached to an inner edge of the upper cover in order to open a handling chamber and make a handling cylinder detachable. There is a handle room that can be opened and closed around the provided pivot and can be freely opened and closed around a rotation axis provided at the inner edge of a front wall forming the front surface of the handle room, and the upper cover and the front wall When the is closed, the upper cover and the front wall are individually engaged and fixed to the fixed portion of the handling room.

[0003]

As described above, when the upper cover and the front wall are individually engaged and fixed to the fixed portion of the handling room, the upper cover and the front wall are not opened when the handling room is opened. Opening and closing the handling chamber is troublesome when the operation chamber needs to be disengaged and the handling chamber is closed, and the coupling position between the recess cover and the front wall is required.

[0004] If the engaging and fixing position is improper, a problem arises that dust is leaked from the handling chamber, the axis of the handling cylinder is misaligned, and vibration is caused by the misalignment of the axis.

[0005]

Therefore, according to the present invention, an upper cover which forms a part of the outer surface of the handling chamber and the upper surface is provided around a pivot in the front-rear direction provided on an inner edge of the upper cover. The front wall forming the front surface of the handling room is openable and closable around a vertical rotation axis provided at the inner edge of the front wall, and the front edge of the upper cover and the outer side of the front wall. It is an object of the present invention to provide a combine handling room structure characterized in that a lock mechanism capable of releasing the connection with the edge is provided so that the upper cover and the front wall can be fixed at the closed position.

Further, the present invention has the following features.

In the closed position between the upper cover and the front wall,
A position regulating mechanism for regulating the relative position between the upper cover and the front wall is provided separately from the lock mechanism.

The position regulating mechanism includes a left-right guide bar projecting from an outer edge of the front wall, and an engaging body projecting from the front edge of the upper cover so as to be disengaged from the guide bar. When the upper cover and the front wall are closed, the upper cover and the front wall are guided to the closed position by sliding contact between the guide rod and the engaging body.

[0009]

Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a combine A having a handling room structure according to the present invention. In the drawings, reference numeral 1 denotes a track frame equipped with a pair of right and left crawler type traveling devices 2; Machine frame installed on truck frame 1, 4
The feed chain 5 is stretched to the left and the handling cylinder 6 and the processing cylinder 7
, A harvesting unit equipped with a cutting blade and a culm transport mechanism, 9 a straw processing unit equipped with a straw chain 10 and a straw tine 11, 12 a driver's seat 13 and a driving operation unit An operation unit having 14; a motor unit 15 having an engine 16 therein; a grain tank 17; a flouring cylinder 18; a swing sorting unit 19; Meanwhile, the stalks harvested in the cutting section 8 are threshed in the threshing section 4, the threshed is separated into grains and straw by a rocking sorting section 19, and the grains are passed through a fryer 18. The waste is stored in the grain tank 17 and the waste is discharged outside the machine through the waste chain 10 and the waste tine 11 of the waste processing unit 9.

The threshing unit 4 includes, as shown in FIGS.
A handling cylinder 6 having a shaft center in the front-rear direction is rotatably supported inside a handling chamber 21 having a grain culm passage 20 extending between the lower front side and the lower left side. Many protruding teeth 22
Thus, the grain is threshed from the tip of the cereal stem passing through the cereal stem passage 20.

As shown in FIG. 4, a large number of handling cylinders 6 are provided on the outer peripheral surface of a drum 26 comprising a substantially cylindrical outer peripheral wall 23 and front and rear disks 24 and 25 closing the front and rear end surfaces of the outer peripheral wall 23. The handling teeth 22 are protruded, and the handling cylinder shaft has a hexagonal cross section at the center of the front and rear disks 24, 25.
27, and is fixed to the front and rear disks 24, 25 via front and rear flanges 28, 29 fixed to the front and rear ends of the handling cylinder shaft 27, respectively.

As shown in FIGS. 3 to 5, the handling room 21 includes an openable upper cover 30 forming an upper surface and an upper portion on a left side, a crimp net 31 forming a lower surface, and a front wall 32 which can be opened and closed. , Which is formed by a right wall 34 and a rear wall 35 fixed to the machine frame 33, and connects the left front end of the upper cover 30 to the left end of the front wall 32.
A releasable lock mechanism 36 keeps the upper cover 30 and the front wall 32 closed.

As shown in FIG. 3, the upper cover 30 has an inner lid 39 curved from the middle to the left edge, and a combine A
The upper end of the upper cover 30 is pivotally connected to a pivot 41 provided on the upper edge of the right wall 34 so as to be rotatable. The upper and left side surfaces of the handling room 21 can be opened.

As shown in FIGS. 3 and 4, the crimping net 31 is a wire netting that is curved so as to maintain a fixed gap with the rotation locus of the tip of the tooth 22 and opens the upper cover 30. Then, the crimping net 31 can be attached and detached while being turned counterclockwise as viewed from the front.

As shown in FIGS. 4 to 6, the front wall 32 is provided with a gap between the lower end edge and the front end edge of the crimping net 31 so as to form a grain culm passage.
The lower half 32a of the front wall is formed in a thin box shape to enhance rigidity, and a plurality of hinge rotation shafts 45 attached to the front edge of the right wall 34 are attached to the right end of the front wall 32. The rim is pivotably connected to the front so that the front surface of the handling chamber 21 can be opened.

The handling cylinder 6 is provided with a front shaft support provided on a front wall 32.
The front support 46 is rotatably supported between a rear support 46 and a rear support 47 provided on the rear wall 35. The front support 46 is, as shown in FIGS. At the approximate center of 32a, the front support shaft insertion hole
A front support shaft 49, which is formed by forming the front support shaft insertion hole 48, is mounted substantially at the center of the outer surface of the lower half portion 32a of the front wall. It is rotatably supported by bearings 51, and a dog clutch 52 is attached to the inner end of the front support shaft 49.
The dog clutch is attached to the front end of a hexagonal tubular handle cylinder shaft 27 through which the one engaging claw 53 is connected and the axis of the handle cylinder 6 is inserted.
When the other engaging claw 54 of 52 is connected and the front wall 32 closes the handling chamber 21, the engaging claws 53 and 54 engage with each other and the front wall 32 opens the handling chamber 21. Are configured to release the engagement. Also, a short cylindrical centering ring 55 is fitted around the outer periphery of the engaging claw 54 on the handle cylinder 6 side, and the inner circumferential surface of the centering ring 55 and the engaging claw 53 on the front support shaft 49 side. Abuts on the outer peripheral surface of the handle shaft 27 so that the axis of the handle barrel shaft 27 matches the axis of the front support shaft 49. In FIG. 4, reference numeral 56 denotes a straw processing unit drive pulley, and 57 denotes a straw processing unit drive belt. In FIG. 4, 42 is a partition plate, 43 is a front winding prevention plate, 44a is a rear winding prevention plate, 44
b is a rear fixed side winding prevention plate. In FIG. 6, reference numeral 55a denotes a guide surface for guiding the engagement of the engagement claws 53, 54.

As shown in FIGS. 3 and 9, the lock mechanism 36 has a lock rod support plate 36a protruding outward on the upper left edge of the front wall 32 and the rear wall 35, respectively. Each of the upper ends of the support plates 36a is bent inward to form an obliquely outward upper guide surface 36b, and front and rear lock bars 36c are projected from the front ends of the lock bar support plates 36a. A lock operation shaft 36d extending in the front-rear direction is rotatably supported along the outer edge of the cover 30, and the base of a lock handle 36e is fixed to the front of the lock operation shaft 36d, and the lock handle 36e is fixed to the lock operation shaft 36d. 36e is projected outward from the side surface of the upper cover 30, and the engagement recesses, which open diagonally inward and upward at the front and rear ends of the lock operation shaft 36d, respectively.
When the base of the hook 36g formed with 36f is fixed and the lock handle 36e is rotated downward, the lock rod 36g is fixed.
When the engaging recess 36f of the hook 36g is engaged with c, and the lock handle 36e is rotated upward, the engagement between the lock bar 36c and the engaging recess 36f is released. FIG.
Reference numeral 36j denotes a torsion spring for urging the hook 36g in the engaging direction.

In particular, the engaging concave portion 36f is provided with a concave peripheral edge 36h farther from the lock operation shaft 36d, and
The lock operation shaft 36d gradually moves from the open end of f to the back.
The guide rod and the engaging recess 36
The outer portion of the upper cover 30 is drawn inward when engaged with the f.

A position regulating mechanism 37 is provided below the lock mechanism 36. The position regulating mechanism 37 is provided on the outer edge of the front wall 32 in the left-right direction as shown in FIGS. And an engaging body 37c having a downwardly open engaging groove 37b formed in the front edge of the upper cover 30 so as to project when the upper cover 30 and the front wall 32 are closed. The engagement groove 37b of the engagement body 37c engages with the rod 37a, and the upper cover
The engagement is released by opening the upper part 30.

In particular, a tapered cut portion 37d which expands downward is formed at the open end of the engagement groove 37b, and the tapered cut portion 37d of the engagement groove 37b formed in the guide rod 37a and the engagement body 37c. The upper cover 30 and the front wall 32 are guided to a normal closed position by sliding contact with the upper cover 30. The shape of the tapered cut portion 37d is not limited to the linear shape shown in FIG. 10 and may be a substantially 1/4 arc shape. In short, when the guide rod 37a and the engagement body 37c are engaged, Any shape may be used as long as the guide rod 37a can be smoothly guided to a predetermined position of the engagement groove 37b. In FIG. 10, reference numeral 37e denotes a corner-dropping portion for preventing the cereal stem passing through the cereal stem passage 20 from being caught.

As described above, the pivot 41 for rotatably supporting the upper cover 30 is in the front-rear direction, and the pivot 45 for rotatably supporting the front wall 32 is in the up-down direction. Since the rotating shaft 45 is substantially orthogonal to the space, the upper cover 30 and the front wall 32, both of which are rotatable, are engaged and fixed to each other, so that the closed position of both can be maintained. Moreover, the front and rear positions of the front wall 32 are regulated by the lock rod support plate 36a of the lock mechanism 36, and the lock rod 36c and the hook 36g
The upper cover 30 is pulled inward by the engagement with
Further, the guide rod 37a is connected to the engagement groove 37b by the tapered cut portion 37d formed in the engagement groove 37b of the engagement body 37c of the position regulating mechanism 37.
At the same time as guiding to the predetermined position of 37b, the front and rear positions of the front wall 32 and the upper cover 30 are regulated, so that the connection between the upper cover 30 and the front wall 32 is accurate and strong, and the handling room 21 is securely closed. As a result, dust leakage from the inside of the handling chamber 21 and deviation of the axis of the handling cylinder 6 are prevented.

3 and 5, reference numeral 38 denotes a detent mechanism, which can temporarily fix the degree of opening of the front wall 32 in three stages. In FIG. 5, a safety cover 32b covers the power transmission mechanism B.

As shown in FIGS. 4 and 8, the rear shaft support portion 47 has a rear support shaft insertion hole 58 formed at the center of the rear wall 35.
The rear support shaft 59 inserted through the rear support shaft insertion hole 58 is
It is rotatably supported by a rear bearing 61 in a flange type rear bearing box 60 attached to the rear side surface, and a hexagonal indentation 62 is continuously provided at the inner end of the rear support shaft 59, as described above. It can be inserted into the rear end of the hexagonal tubular handle shaft 27.

When the lock mechanism 36 is released, the upper cover 30 is opened, the crimp net 31 is removed, and when the front wall 32 is opened, the engagement of the dog clutch 52 is released, and the front support shaft is released.
The connection between 49 and the front end of the handle shaft 27 is released. In this state, the handle cylinder 6 can be easily pulled out of the handling chamber 21 by pulling the handle cylinder 6 forward.
Can be taken out. The handling cylinder 6 can be mounted in the handling room 21 in the reverse order.

The power transmission mechanism B to the handling cylinder 6 is shown in FIGS.
As shown in the figure, a gear box 64 having a built-in meshing bevel gear 63 is arranged on the right outside the handling chamber 21, and an input pulley 66 is fitted to a left-right input shaft 65 extending from the gear box 64, The output pulley 69 is fitted to the front end of an output shaft 68 extending in the front-rear direction extending from the gear box 64, and is connected to the engine 16 of the prime mover unit 15 via an input belt 67, and is attached to the front end of the front support shaft 49. A passive pulley 70 is fitted, and an interlock belt 71 is wound between the output pulley 69 and the passive pulley 70 so as to transmit power from the engine 16 to the handling cylinder 6. The output pulley 71, the output pulley 69, and the passive pulley 70 are constituted by a V belt and a V pulley, respectively.

A tension mechanism 72 is attached to the outer surface of the front wall 32 to apply a required tension to the interlocking belt 71 to prevent the interlocking belt 71 from coming off and reducing the transmission power. The tension mechanism 72 forms the outer periphery of the front bearing box 50 into a circular cross section to form a tension fulcrum 73, and the bending portion of a substantially L-shaped tension lever 74 is rotatably fitted to the tension fulcrum 73, A tension pulley 75 is pivotally supported at one end of the tension lever 74, and a spring seat 77 in which an adjustment bolt 76 is screwed is provided on the outer surface of the front wall 32 to protrude.
A tension spring 78 is suspended between the adjusting bolt 76 and the other end of the tension lever 74 so that the tension of the tension spring 78 presses the outer periphery of the interlocking belt 71 inward. With the tension pulley 75 positioned closer to the front wall 32 side than the rotation shaft 45, the front wall
At the time of opening 32, it is possible to prevent interference between the tension pulley 75 and the output pulley 69 and to prevent the interlocking belt 71 from coming off from the tension pulley 75, and to relax the interlocking belt 71 to reduce the operation force for opening the front wall 32. it can.

In FIG. 3, reference numeral 79 denotes a bending assisting device for regulating the bending position of the interlocking belt 71, and reference numeral 80 denotes a detachment stopper for preventing the interlocking belt 71 from coming off.

[0029]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the upper cover forming a part of the outer surface and the upper surface of the handling chamber can be freely opened and closed about a longitudinal axis provided on the inner edge of the upper cover. At the same time, the front wall forming the front surface of the handling room is openable and closable about a vertical rotation axis provided on the inner edge of the front wall, and the front edge of the upper cover and the outer edge of the front wall are separated. By providing a lock mechanism capable of uncoupling and by being configured so that the upper cover and the front wall can be fixed in the closed position, the upper cover and the front wall can be unlocked with one touch to open the handling chamber, Further, since only one lock mechanism is required, the cost can be reduced.

According to the second aspect of the present invention, in the closed position between the upper cover and the front wall, the lock mechanism is provided separately from the lock mechanism.
By providing the position restricting mechanism for restricting the relative position between the upper cover and the front wall, the relative position between the upper cover and the front wall is restricted at two places of the lock mechanism and the position restricting mechanism. Because the front and rear positions of the front wall and the upper cover are regulated, the connection between the upper cover and the front wall is accurate and strong, the handling room is securely closed, and dust leaks from the inside of the handling room, The deviation of the axis of the handling cylinder and the occurrence of vibrations caused by the deviation of the axis can be prevented.

According to the third aspect of the present invention, the position regulating mechanism includes a left-right guide bar projecting from an outer edge of the front wall and a front end edge of the upper cover so as to be disengaged from the guide bar. It has a protruding engagement body, and at the time of closing operation of the upper cover and the front wall, by sliding contact between the guide rod and the engagement body,
The arrangement for guiding the upper cover and the front wall to the closed position facilitates the alignment of the upper cover and the front wall.

[Brief description of the drawings]

FIG. 1 is a side view of a combine having a handling room structure according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of a threshing unit.

FIG. 4 is a sectional plan view of a threshing unit.

FIG. 5 is a plan view of a front wall.

FIG. 6 is a cross-sectional plan view of a front wall.

FIG. 7 is a sectional plan view of a front support shaft.

FIG. 8 is a sectional plan view of a rear support shaft.

FIG. 9 is a plan view of a lock mechanism.

FIG. 10 is a side view of the position regulating mechanism.

[Explanation of symbols]

 A Combine 6 Handling cylinder 21 Handling room 30 Upper cover 32 Front wall 33 Machine frame 36 Lock mechanism 37 Position regulation mechanism 37a Guide rod 37c Engagement body 41 Axis 45 Rotation axis

Claims (3)

[Claims] An upper cover (30) forming a part of the outer surface of the handling chamber (21) is formed around a pivot (41) in the front-rear direction provided on an inner edge of the upper cover (30). The front wall (32) forming the front of the handling room (21) is
A lock that can be freely opened and closed around a vertical rotation shaft (45) provided on the inner edge of (2) and that can uncouple the front edge of the upper cover (30) and the outer edge of the front wall (32). Provide a mechanism (36),
A handling room structure for a combine, wherein the upper cover (30) and the front wall (32) can be fixed in a closed position. 2. In a closed position between the upper cover (30) and the front wall (32), the upper cover is provided separately from the lock mechanism (36).
(30) and the front wall (32)
7. The combine room handling structure according to claim 1, wherein 7) is provided. 3. The position regulating mechanism (37) includes a left-right guide bar (37a) protruding from an outer edge of the front wall (32), and an upper portion removably engaged with the guide bar (37a). An engagement body (37c) protruding from the front edge of the cover (30), and when the upper cover (30) and the front wall (32) are closed, the guide rod (37a) and the engagement body are engaged.
2. The combine handling room structure according to claim 1, wherein the upper cover (30) and the front wall (32) are guided to the closed position by sliding contact with the (37c).