JPH11206231A - Threshing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a threshing machine capable of preventing not only deformation such as distortion and torsion, of a threshing room case and a supporter shaft but also contact of a pipe and a fulcrum shaft by allowing the threshing machine to have a structure of a rotatably moving fulcrum pipe formed so as to rotatably movably connect two rotatably movable supporting arms. SOLUTION: This threshing machine having a threshing room case having a threshing cylinder rotatably and pivotally supported therein and a lower part case installed in the lower part of the threshing room case and having a classifying device, and rotatably moving supporting arms 38 installed in each of the front and rear parts of the threshing room case, connected to the fulcrum shaft 36 pivotally supported by the lower case so as to be freely rotatably moved, has a structure of the rotatably moving fulcrum pipe 34 for enabling the threshing room case to be rotatably moved upward by using the fulcrum shaft 36 as a rotatably moving center, covering the fulcrum shaft 36 so as to be freely rotated and so that two rotatably moving supporting arms 38 may be connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing machine that can be mounted on a combine, a harvester, or the like, and more particularly, to a structure of a connecting portion between a handling room case and a lower case.

[0002]

2. Description of the Related Art A threshing machine 6 comprising a handling room case 20 in which a handling cylinder 18 is rotatably mounted on an inner shaft, and a lower case 26 provided below the handling room case 20 and provided with a sorting device is provided. Already known. Conventionally, as shown in FIG. 3, one rotation support arm 38 is provided on the upper side of the entrance side plate 40 (grain culm carrying side) and the exit side plate 42 (grain culm carrying side) of the handling room case 20 opposite to the handling side. A short pipe 33 is attached to the tip of each of the rotation support arms 38.
Has been fixed. And these short pipes 33 are
A fulcrum shaft 36 mounted on the upper side of the lower case on the side opposite to the handling port.
Are rotatably supported and connected. Thus, the handling chamber case 20 can be rotated upward about the fulcrum shaft 36 as a rotation center.

[0003]

In the above-mentioned structure, the handling chamber case is connected to the fulcrum shaft in a U-shape via the pivot fulcrum pipe. For this reason, the strength of the connecting portion is low, for example, when a strong load is applied such as when the grain stalk is clogged, the twist occurs, and the handling chamber case and the fulcrum shaft are deformed such as distortion and twist. In addition, since it is supported via a relatively short pipe 33, when the handling chamber case 20 is rotated in a state where an eccentric load is generated, a twist occurs between the short pipe 33 and the fulcrum shaft 36. May occur, which may hinder opening and closing of the handling room case 20.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has a handling room case (20) in which a handling cylinder (18) is rotatably mounted on an inner shaft, and the handling room case. A lower case (26) provided below the (20) and provided with a sorting device; and a fulcrum shaft (36) mounted on the lower case (26). In the threshing machine (6), which is rotatably connected to a rotation support arm (38) provided in each of the above, the handling chamber case (20) is rotated upward about the fulcrum shaft (36) as a rotation center. The pivot pipe (34) for enabling has a structure in which the pivot shaft (36) is rotatably covered so as to connect between the two pivot support arms (38). .

[Operation] With the above structure, the fulcrum shaft (3
A rotation fulcrum pipe (34) that rotatably covers 6),
By having a structure in which the two rotation support arms (38) attached to the handling room case (20) are connected, the strength of the connecting portion between the handling room case (20) and the lower case (26) is increased and twisted. Can be prevented from occurring.

The reference numerals in parentheses are for the purpose of comparison with the drawings, but do not limit the configuration of the present invention.

[0007]

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

FIG. 1 is a right side view of a combine 1 equipped with a threshing machine 6 according to the present invention. In the figure, the combine 1 has a body 4 supported by a pair of right and left crawler traveling devices 2, and the body 4 includes a threshing machine 6.
Is installed. A grain tank 10 provided with a discharge auger 8 is adjacent to the left and right of the threshing machine 6,
Between the threshing machine 6 and the grain tank 10, a frying cylinder 7 is provided. A driver's seat 12 is adjacent to the front of the grain tank 10 (forward in the traveling direction). Further, a reaping device 14 is disposed in front of the machine body 4 (forward in the traveling direction). A fuel tank (not shown) for storing fuel is mounted on the body 4.

On the other hand, as shown in FIG. 2, the threshing machine 6 includes a handling chamber case 20 in which a handling cylinder 18 is rotatably mounted on an interior shaft.
An induction sorting body 22 is provided below the handling room case 20.
A lower case 26 in which a receiving net 24 is stretched above the
Is provided. The handling room case 20 and the lower case 26
Thus, a handling room 30 and a handling port 32 through which the grain stem passes are formed.

Here, as shown in FIGS. 2, 4 and 5, the entrance side plate 40 of the handling room case 20 (the grain culm carrying side).
In addition, one rotation support arm 38 is attached to the upper portion of the outlet side plate 42 (the grain culm carry-out side) opposite to the handling port side. The rotation support arm 38 is connected to a fulcrum shaft 36 which is mounted on an upper portion of the lower case 26 on the side opposite to the handling port via a rotation fulcrum pipe 34. As shown in FIG. 4, the rotation support pipe 34 rotatably covers the fulcrum shaft 36 so as to connect between the two rotation support arms 38. As a result, the handling room case 20 is pivoted around the fulcrum shaft 36.
Can rotate upward.

The rotation support arm 38 is provided with the entrance side plate 4.
0 and the outlet side plate 42, but is not limited thereto, and may be provided at both front and rear ends of the handling room case 20.

According to the present embodiment, the rotation fulcrum pipe 34 that rotatably covers the fulcrum shaft 36 is provided in the handling room case 20.
Has a structure in which the two rotation support arms 38 attached to are connected to each other, it is possible to increase the strength of the connection portion between the handling room case 20 and the lower case 26. Thereby, the handling room case 20 when a strong load is applied to the connection portion
And deformation of the fulcrum shaft 36 such as distortion and torsion can be prevented, and between the rotation fulcrum pipe 34 and the fulcrum shaft 36 when the fulcrum shaft 20 is rotated with an eccentric load. It is possible to prevent the occurrence of twist.

As shown in FIG. 1, the grain tank 10 adjacent to the threshing machine 6 is provided with a discharge auger 8. The discharge auger 8 is composed of a vertical spiral cylinder 44 erected from the bottom of the grain tank, and a discharge cylinder 46 supported to be able to move up and down with respect to the vertical spiral cylinder 44 and to be rotatable together with the vertical spiral cylinder 44. Become. Here, the discharge cylinder 46
Is composed of a base tube 48 connected to the vertical spiral tube 44, an extension tube 50 having a grain outlet, and a support tube 52 connecting the base tube 48 and the extension tube 50. On the other hand, the extension cylinder 50 can be folded substantially parallel at the support cylinder 52 portion.

The base tube 48 and the support tube 52 may be provided with gears of different sizes so that the extension tube 50 can be easily folded. Hereinafter, this will be described in detail with reference to FIGS.

The base cylinder 48 has two shaft support plates 54,
54 'is attached. A rotary shaft 56 is fixed to the outside of one of the two shaft support plates 54, and a large gear 58 is rotatably supported on the rotary shaft 56. A rotating lever 60 is rotatably supported by the rotating shaft 56 outside the large gear 58. Further, a pin 62 fitted to the gear of the large gear 58 is
Is protruding. By turning the turning lever 60 in a state where the pin 62 is fitted to the gear, the large gear 58 is rotatable. On the other hand, there is a small gear 64 that partially fits with the large gear 58 and rotates in conjunction with the rotation of the large gear 58. The small gear 64 is integrally provided in a state of being fixed to a shaft support plate 66 attached to the support cylinder 52. Also,
The small gear 64 is pivotally supported by a rotation shaft 68, and the rotation shaft 68 is supported by two shaft support plates 6 attached to the support cylinder 52.
6, 66 ′ and two shaft support plates 54, 54 ′ attached to the base cylinder 48 so as to be rotatable. Here, one of the support cylinders 52 is integrally fixed to the extension cylinder 50,
The other end is detachably connected to the base tube 48. Therefore, the rotation of the small gear 64 causes the support cylinder 52 and the base cylinder 48 to rotate.
And the support cylinder 52 and the extension cylinder 50 are integrally rotated about the rotation shaft 68 as a rotation fulcrum. A hook 70 for connecting the base cylinder 48 and the support cylinder 52 is provided on the opposite side of the gear provided between the base cylinder 48 and the support cylinder 52. The hook allows the joint between the base tube 48 and the support tube 52 to be fixed and maintained when the discharge tube 46 is extended.

When gears having different sizes are provided in the base tube 48 and the support tube 52 as described above, the following operation and effect can be obtained.

When the turning operation of the turning lever 60 is performed, the large gear 58 is rotated via a pin 62 projecting from the turning lever 60. In conjunction with the rotation of the large gear 58, the small gear 6
4 rotates around a rotation shaft 68. At this time, small gear 6
The support cylinder 52 fixed to the cylinder 4 also rotates and opens from the side of the base cylinder 48 opposite to the side where the gear is provided. As a result, the extension cylinder 50 fixed to the support cylinder 52 also opens integrally with the support cylinder 52 from the side opposite to the gear, and further extends around the rotation shaft 68 to extend with respect to the base cylinder 48. The tube 50 is folded substantially parallel to the support tube 52. Therefore, the folding operation of the discharge tube 46, which was conventionally performed by a complicated operation using a plurality of levers provided on the discharge tube 46, can be easily performed only by the turning operation of the turning lever 60. Becomes

The extension operation of the discharge cylinder 46 can be similarly easily performed by rotating the rotating lever 60 in the direction opposite to the direction of the folding operation.

Further, the rotation angle can be easily changed by changing the gear ratio of the two gears.

Further, a paddy collecting device 74 for returning paddy falling from the openings 72, 72 'of the base tube 48 and the support tube 52 when the discharge tube 46 is folded back to the threshing machine 6 again.
May be provided in the threshing machine 6. Hereinafter, this paddy collecting device 7
4 will be described with reference to FIGS. 7A, 7B, and 7C.

The paddy collecting device 74 includes a dust cover 76 and a tray 78. The dust-proof cover 76 is attached to the upper side of the threshing machine 6 and has a shape protruding forward. Further, the dustproof cover 76 is provided with an opening 80 communicating downward, and further provided with an inclined portion 82 communicating with the opening 80 so that paddy gathers in the opening 80. On the other hand, the receiving tray 78 is provided below the dust-proof cover 76 and has a shape protruding forward like the dust-proof cover 76. Further, an opening 84 communicating with the threshing machine 6 is provided on a side surface of the threshing machine where the tray 78 and the threshing machine 6 are in contact with each other. Furthermore, the tray 78 is provided with a slope 86 communicating with the opening 84 so that the paddy collects in the opening 84.

The dust cover 76 and the tray 78 may be integrally formed and attached to the threshing machine 6.

When the paddy collecting device 74 is provided as described above, the following operation and effect can be obtained.

That is, the discharge auger 8 is turned and the discharge cylinder 46 is folded so that the connecting portion comes above the paddy collecting device 74. At this time, the opening 7 of the base tube 48 and the support tube 52
The paddy spilling from 2, 72 'is received by the dustproof cover 76. The paddy received in the dustproof cover 76 moves to the opening 80 along the slope 82 leading to the opening 80 and drops from the opening 80. The dropped paddy is received by a tray 78 below the dustproof cover 76. The paddy received in the tray 78 moves to the opening 84 along the inclined portion 86 provided in the tray 78, and is transported from the opening 84 into the threshing machine 6. By this, the paddy which has conventionally fallen onto the body 4 from the opening of the base tube 48 and the support tube 52 when the discharge tube 46 is folded is transported again into the threshing machine 6, so that the rice 4 It is possible to prevent dirt on the body 4 due to the scattering of the hulls, and to prevent the loss of the hulls by returning the spilled hulls to the threshing machine 6 again.

As described above, the fuel tank 16 is mounted on the body 4. The fuel tank 16 may be provided with a fuel supply device 86 for preventing fuel leakage. Hereinafter, the fuel supply device 86 will be described with reference to FIGS. 8, 9A and 9B, FIG. 10, and FIG.

The fuel supply device 86 is connected to the fuel tank 16 via a rubber pipe 88. The fuel supply device 86 comprises a fuel supply pipe 90, a sliding pipe 92 and a cap 94. A pin 96 is provided on the outer periphery of the fuel supply pipe 90 so as to project in the radial direction, and an inclined groove 98 is formed on the inner periphery of the sliding pipe 92. A sliding pipe 92 is provided on the outer periphery of the tip of the fuel supply pipe 90.
However, in a state where the inclined groove 98 is engaged with the pin 96,
It is fitted in an oil-tight manner movably in the axial and rotational directions. Further, a notch 102 is provided in the opening 100 of the sliding pipe 92, and the notch 10
2 having a spring pin 104 fitted to the cap 2
4 is detachably attached to the opening 100 of the sliding pipe 92.

When the fuel supply device 86 is provided as described above, the following operation and effect can be obtained.

First, the case where the cap 94 is removed will be described. By rotating the cap 94 in the left direction, the sliding pipe also rotates in conjunction with the rotation of the cap 94, and the sliding pipe is rotated by engaging the inclined groove 98 with the pin 96. 92 moves to the fuel pipe 90 side (reduction direction). By turning the cap 94 further with the pin 96 reaching the end of the groove 98, the cap 94
The spring pin 104 and the notch 102 of the sliding pipe 92 fit together, and the cap 94 comes off when the notch 102 fits. In this state, fuel such as gasoline is supplied from the fuel supply pipe 90 through the opened sliding pipe 92. Next, a case where the cap 94 is closed will be described. FIG.
(B) is a diagram showing a state in which the cap 94 has been removed and the supply of fuel has been completed. After the fuel has been filled up to the mouth of the sliding pipe 92, the spring pin 104 of the cap 94 is
Turn the cap 94 to the right while pressing it along the notch 102 of the sliding pipe 92. As a result, the sliding pipe 92 also moves, and the sliding pipe 92 moves in the direction extending from the fuel supply pipe 90 by the engagement between the pin 96 and the inclined groove 98. In this state, as shown in FIG. 9A, the fuel level is lower than the mouth of the sliding pipe 92. Therefore, conventionally, when the fuel is fully filled in the fuel tank 16, the fuel sometimes leaks out of the cap 94 due to the inclination of the body 4 when starting to move or due to thermal expansion of the fuel. By providing the supply device 86, it is possible to prevent fuel leakage.

[0029]

As described above, according to the present invention, the pivot support pipe rotatably covering the fulcrum shaft has a structure in which the two pivot support arms attached to the handling room case are connected. Thus, it is possible to increase the strength of the connecting portion between the handling room case and the lower case. This makes it possible to prevent deformation such as distortion and torsion of the handling room case and the fulcrum shaft when a strong load is applied to the connection portion, and when the handling room case is rotated with an uneven load generated. It is possible to prevent torsion occurring between the rotation fulcrum pipe and the fulcrum shaft.

[Brief description of the drawings]

FIG. 1 is a right side view of a combine equipped with a threshing machine according to the present invention.

FIG. 2 is a front view partially showing a main part of the threshing machine in cross section.

FIG. 3 is a view showing a connecting portion between a conventional handling room case and a lower case.

FIG. 4 is a view showing a connection portion between the handling room case and the lower case according to the present invention.

FIG. 5 is an enlarged view of a main part of a connection portion between a handling room case and a lower case.

FIG. 6A is a view showing a portion near a connecting portion between a base cylinder and an extension cylinder of a discharge auger in a combine. (B) is an II sectional view of (A).

FIG. 7A is a view showing a state in which a discharge auger in a combine is folded. (B) is a side view of the paddy collecting device. (C) is a perspective view of the dust cover.

FIG. 8 is a side view of the fuel tank.

FIG. 9 is a view showing a fuel supply device for a fuel tank;
(A) is a figure which shows the state which closed the cap, (B) is a figure which shows the state which removed the cap.

FIG. 10 is a view showing a cap of a fuel tank.

FIG. 11 is a sectional view taken along line II-II of FIG.

[Description of Signs] 1 Combine 2 Crawler traveling device 4 Body 6 Threshing machine 8 Discharge auger 10 Grain tank 12 Driver's seat 14 Harvesting device 16 Fuel tank 18 Handling cylinder 20 Handling room case 22 Induction sorting body 24 Receiving net 26 Lower case 30 Handling room 32 Handling opening 34 Rotating fulcrum pipe 36 Supporting shaft 38 Rotating support arm

Claims (1)

[Claims] 1. A fulcrum which is provided with a handling room case in which a handling cylinder is rotatably mounted on an inner shaft, and a lower case provided below the handling room case and provided with a sorting device. In a threshing machine in which a rotation support arm provided before and after the handling room case is rotatably connected to a shaft, the handling room case is rotatable upward around the fulcrum shaft as a rotation center. A threshing machine characterized in that a rotation fulcrum pipe has a structure that rotatably covers the fulcrum shaft so as to connect the two rotation support arms.