JP2002125444A - Thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a separation performance and enhance the mechanical strength of a threshing chamber case. SOLUTION: This thresher 10 has a threshing chamber case 14 in which a threshing cylinder 12 is rotatably and pivotally disposed, and a lower case 16 under the threshing chamber case. Rotary support arms 28, 28 disposed in the threshing chamber case are rotatably connected to a support shaft 30 pivotally disposed on the lower case 16. When the threshing case 14 is upward rotated from the lower case 16 on the support shaft 30, the threshing cylinder 12 is also integrally rotated. A leakage member 44 having leaking and separating holes 48 formed therein is disposed on the threshing cylinder-facing side of the threshing chamber case 14. The leakage member 44 is connected to the rotary support arms 28 to allow the leakage member to function as a receiving net for leaking down grains. Simultaneously, the leakage member 44 plays a role for enhancing the mechanical strength of the threshing chamber case 14, because the leakage member is connected to the intermediate portion of the support shaft 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing machine mounted on a combine or the like, and more particularly, to a threshing machine in which a leaking body for reinforcing a receiving net and a handling room case is disposed in the handling room case.

[0002]

2. Description of the Related Art Conventionally, in this kind of threshing machine, a handling chamber case which rotatably mounts an inside of a handling cylinder and covers an upper part of the handling cylinder is provided in a lower case opposite to a handling port with respect to the handling cylinder. It is known that the handling port side can be opened with the fulcrum shaft as the center of rotation and the handling chamber case is opened upward to facilitate cleaning and maintenance work of the handling chamber.

[0003] A large number of teeth are formed on the outer periphery of the handling cylinder, and the grain stem is threshed by rotating the handling cylinder to bring the grain stem into contact with the teeth. Further, at a predetermined distance from the outer peripheral surface of the handling cylinder, a receiving net is disposed so as to cover substantially above and below the outer peripheral surface. It is configured to leak and separate and leak grains and straw chips. This receiving net can be inserted and removed along the outer periphery of the handling cylinder from the handling port side. At the tip (reverse handling port side) in the insertion direction of the receiving network, straw that has entered the handling chamber is placed. A cutting sickle is mounted so as to protrude into the handling room.

[0004]

The handling chamber case is rotatable about the fulcrum shaft on the opposite side of the handling port, but is opened upward integrally with the heavy handling cylinder. Because of the configuration, it is unstable in strength, and when rotating,
There was a risk that the constituent members would be deformed or blurred. For this reason, it is desired to increase the mechanical strength of the rotation fulcrum portion of the handling room case. However, simply adding a reinforcing member increases the manufacturing cost.

[0005] The present invention has been made to solve the above problems, and an object of the present invention is to provide a threshing machine which can enhance the mechanical strength of a handling room case while improving the sorting performance. To provide.

[0006]

In order to achieve the above object, the invention according to claim 1 comprises a handling room case (14) in which a handling cylinder (12) is rotatably mounted on an interior shaft, and a handling room case. A lower case (16) provided below (14) and provided with a sorting device, and mounted above the lower case (16);
Receiving net (18) to sort out threshed grains and straw chips
a, 18b), and a pivot shaft (30) extended in the longitudinal direction of the fuselage and suspended on the lower case (16), and a pivot provided on a front part and a rear part of the handling chamber case (14), respectively. In the threshing machine (10) in which the support arms (28, 28) are rotatably connected, a leakage sorting hole (48) is formed in the handling room case (14) on the side facing the handling cylinder (12). The leaking body (44) is disposed, and the leaking body (44) is connected to the rotation support arm (28) to receive the receiving nets (18a, 18a).
b) and a reinforcing member for the handling room case (14).

[0007] The invention according to claim 2 is characterized in that the leaking body (4)
4) is characterized by being constituted by a metal plate in which the leakage selection hole (48) is formed by a punching means.

[0010] The invention according to claim 3 is the invention in which
4) is connected to an intermediate portion of the fulcrum shaft (30).

[Operation] The threshing machine (10) according to the present invention comprises:
A handling room case (1) in which a handling cylinder (12) is
4) has a lower case (16) below, and a fulcrum shaft (30) suspended on the lower case (16) is provided with a rotation support arm (28, 2
8) is rotatably connected to this handling room case (1).
4) and the lower case (1) about the fulcrum shaft (30).
When the rotation operation is performed upward with respect to 6), the handling cylinder (12) also rotates integrally.

[0010] Further, a leakage body (44) having a leakage selection hole (48) formed therein is disposed in the handling room case (14) on the side facing the handling cylinder (12). Leak body (4
By connecting 4) to the rotation support arm (28),
The leaking body (44) functions as a receiving net for leaking kernels. For this reason, the receiving net (18) is provided by the leaking body (44).
a, 18b), the leakage area of the grain increases, and the improvement of the leakage sorting performance is achieved.

Further, since the leaking body (44) is connected to an intermediate portion of the fulcrum shaft (30), it also functions as a reinforcing member for increasing the mechanical strength of the handling room case (14). Thus, the leakage member (44) prevents the constituent members from being deformed or shaken during the rotation operation of the handling room case (14).

Note that the reference numerals in parentheses described above are for the purpose of comparing the drawings, and do not limit the present invention in any way.

[0013]

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

FIG. 1 is a cross-sectional front view of a threshing machine according to the present invention. The threshing machine 10 includes a handling room case 14 in which a handling cylinder 12 is rotatably mounted on an interior shaft, and a handling room case 14. And a lower case 16 provided with a sorting device (not shown). The handling cylinder 12 is rotatably supported on a rotating shaft along the feeding direction of the grain culm, and has a large number of teeth 13 on the outer peripheral surface thereof. And threshing is performed.

A first and a second receiving nets 18a, 18b, which are formed so as to cover substantially the sides and the lower part of the handling cylinder 12 at a predetermined distance from the outer peripheral surface of the handling cylinder 12. 18
b is detachably arranged. These first and second receiving nets 18a and 18b are connected at a connection fulcrum 19 at a substantially central portion in the circumferential direction of the handling cylinder 12 so that the first and second receiving nets 18a and 18b can be bent. The grains that have been threshed, straw, and the like are separated and leaked by 18a and 18b.

The handling room case 14 and the lower case 1
6, a handling chamber 20 and a handling port 22 are formed. In addition, the tip end side of the insertion direction of the first receiving net 18a (the counter-hand side)
, A net frame 21 having a triangular cross section is attached to the first net 18a.
To prevent paddy and debris from staying at the top of the building.

The handling chamber case 14 has a pivotal support arm 28 on the upper side of the front side plate 24 and the rear side plate 26 on the side opposite to the handling opening.
Is installed. The turning support arm 28 is connected to a fulcrum shaft 30 which is mounted on the upper portion of the lower case 16 on the side opposite to the handling port. The handling chamber case 14 is turned around the fulcrum shaft 30 for handling. The mouth side is opened. Further, when the handling room case 14 is closed, the lock of the handling room case 14 is unlocked and opened upward by operating a lock lever (not shown) for locking and unlocking the handling room case 14. The cleaning and maintenance of the handling room 20 can be easily performed.

In this embodiment, the handling room case 14
In addition, a leaking body having a leak selection hole formed on the side facing the handling cylinder 12 is disposed, and the leaking body is connected to the rotation support arm 28 to connect the receiving net 18 and the handling chamber case 14. Also used as a reinforcing member.

FIG. 2 shows the handling room case 14 and the lower case 1.
6 shows an exploded perspective view of the lower case 16. The lower case 16 is composed of a lower frame body 34 and fulcrum shaft mounting members 36, 36 which are respectively fixed by bolts before and after the upper side on the counter opening side (the rear side is not shown).
The fulcrum shaft 30 is supported by the fulcrum shaft mounting members 36, 36. On the fulcrum shaft 30, rotation support arms 28, 28 are rotatably mounted with respect to the fulcrum shaft 30, and further, on the inner side of the fulcrum shaft 30 in the axial direction, the leak body attaching members 42, 42 are turned. It is movably mounted.

A front plate 24 and a rear plate 26 of the handling room case 14 are fixed to the rotation support arms 28, 28 by bolts. Further, as shown in FIG.
A leaking body 44 is bolted to the rotation support arm 28 and the mounting member 42 at the intermediate portion 0 along the fulcrum shaft 30 in the axial direction. The leaking body 44 is made of a metal plate such as an iron plate. As shown in FIGS. 1 and 4, an oblong shape that is inclined with respect to the rotation direction of the handling cylinder 12 is provided on the facing side substantially above the handling cylinder 12. Are formed by punching means such as punching.

In the present embodiment, the leaking body 44 is connected to the longitudinally intermediate portion of the fulcrum shaft 30 (see FIGS. 2 and 3), so that the fulcrum shaft 30 and the handling room case 14 are mechanically connected. The strength is increased, and it is possible to prevent blurring and deformation when the handling room case 14 is rotated upward. Further, since the leakage body 44 is formed with the oval-shaped leakage selection hole 48, the grains threshed in the handling room 20 are leaked through the leakage selection hole 48. Therefore, the leaking body 44 also has a function as the receiving network 18. In particular, since the leakage selection hole 48 is formed in an elliptical shape, the leakage of kernels is improved.

In this way, the leaking body 44 functions not only as the receiving net 18 but also as a reinforcing member for the handling room case 14, so that both functions are used. Further, an iron plate cover 46 is provided on the outer surface (rear side) of the leaking body 44 so that the grains leaked from the leak sorting hole 48 do not fly outside the machine.
Is installed. Therefore, at the time of maintenance / inspection of the leaking body 44, the work can be easily performed by removing the iron plate cover 46.

Further, the above-mentioned rotary support arms 28, 28
, A camera mounting frame 50 is fixed, and a plurality of cameras 52 are mounted on the camera mounting frame 50 along the front-rear direction on the side facing the handling cylinder 12. The kama 52 serves to cut a long straw that has entered the handling room 20.

FIGS. 5A and 5B show a front view and a side view of the leaking body 44. FIG. In this leaking body 44, a front net 54 is formed on a curved surface whose center of curvature is the center of rotation of the handling cylinder 12, and the leak sorting hole 48 is formed in the curved surface. A top plate 55 and a rod-shaped member 56 at the upper and lower portions, respectively, and inner mounting plates 57, 57 for partitioning the left and right end sides of the net 54 in the drawing;
A plurality of partition plates 58 formed between the first and second mesh members 57 and 57;
4 extending in the left-right direction in the drawing and having L-shaped plates 59, 59 integrated with the top plate 55, and outer mounting plates 60, 60 provided at the left and right ends of the L-shaped plates 59, 59. I have.

FIGS. 6 (a) and 6 (b) show a front view and a side view of the above-described stuck attachment frame 50. FIG.

The frame 50 has a frame body 64 which is bent in a substantially U-shape and has a plurality of square holes 62 formed at a predetermined interval on the front surface and a plurality of cutout holes 63 formed on the bottom surface. And front and rear walls 65 and 66 fixed to the left and right ends of the frame main body 64, and a mounting bracket 67 fixed to the upper part. Then, the studs 52 are attached to the plurality of square holes 62.

Next, the operation will be described.

The threshing machine 10 according to the present embodiment includes a lower case 16 below a handling room case 14 in which a handling drum 12 is internally mounted, and is mounted on an upper portion of the lower case 16 on a side opposite to a handling opening. Rotating support arms 28, 28 provided on the front and rear side plates 24, 26 of the handling room case 14 on the fulcrum shaft 30.
Are rotatably connected. When the handling chamber case 14 is rotated upward about the fulcrum shaft 30, the handling cylinder 12 is also integrally rotated.

On the upper part of the handling port side opposite to the handling port side, on the extension of the insertion direction of the receiving net 18a from the handling port side,
In addition, a leakage body 44 having an oval leakage selection hole 48 formed on the side facing the handling cylinder 12 is disposed.
Is connected to the rotation support arm 28, so that the leaking body 44 functions as receiving nets 18a and 18b for leaking kernels. As a result, a separate receiving net is added on the extension of the receiving net 18a in the insertion direction, and the leaking body 44 further increases the leak area of the grain including the receiving nets 18a and 18b, The lower sorting performance is improved.

On the other hand, since the leaking member 44 is formed of a metal plate having a leak selecting hole 48 formed by punching or other punching means, the leaking member 44 is less leaky than when a mesh is formed using a wire. The rigidity of the lower body 44 itself increases. In addition, since the leaking body 44 is connected to the intermediate portion in the longitudinal direction along the axial direction of the fulcrum shaft 30, the leaking body 44 also functions as a reinforcing member for enhancing the mechanical strength of the handling room case 14. . By providing such a leak body 44,
In a configuration in which the handling room case 14 on which the inside of the handling cylinder 12 is mounted is rotatably supported about the fulcrum shaft 30 with respect to the lower case 16, when the handling room case 14 is rotated upward, the constituent members are used. Deformation or blurring is prevented.

[0031]

As described above, according to the first aspect of the present invention, since the leaking body is used for both the receiving net and the reinforcing member of the handling room case, the leakage of the receiving net including the leaking body is achieved. The sorting area can be improved by increasing the area, and the mechanical strength of the handling room case can be enhanced. In particular, in a configuration in which the handling chamber case in which the handling cylinder is mounted on an interior shaft is rotatably supported around the fulcrum shaft, there is a possibility that the components may be deformed or shake during the rotating operation. However, according to the present invention, since the mechanical strength of the handling room case is increased by the leaking body, these disadvantages can be avoided.

According to the second aspect of the present invention,
By using a metal plate with a leakage selection hole formed by punching means, the rigidity of the leakage body is increased as compared with the case where a mesh is formed using a wire, and the mechanical strength of the handling room case is enhanced. be able to.

According to the third aspect of the present invention,
By being connected to the intermediate portion of the fulcrum shaft, the strength of the fulcrum shaft and the handling room case can be increased, and shake and deformation during the rotation operation can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a threshing machine according to the present invention as viewed from the rear.

FIG. 2 is an exploded perspective view of a handling room case and a lower case.

FIG. 3 is a plan view of a main part of the threshing machine.

FIG. 4 is a side view of a handling cylinder portion of the threshing machine.

FIG. 5A is a front view of a leaking body, and FIG. 5B is a side view thereof.

FIG. 6A is a front view of a camera attachment frame, and FIG. 6B is a side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Threshing machine 12 Handling cylinder 14 Handling room case 16 Lower case 18a 1st receiving net 18b 2nd receiving net 20 Handling room 28 Rotation support arm 30 Support shaft 44 Leakage body 48 Leakage sorting hole

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shigeru Nakajima 667 Idaicho, Higashiizumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B094 AA08 AJ01 HC02 HC12

Claims (3)

[Claims] 1. A handling room case in which a handling cylinder is rotatably mounted inside a shaft, a lower case provided below the handling room case and provided with a sorting device, mounted above the lower case, and threshed. And a receiving net for separating and separating kernels and straw chips. Rotating supports provided on front and rear portions of the handling room case, respectively, on fulcrum shafts which are mounted on the lower case and extend in the longitudinal direction of the body. In a threshing machine in which an arm is rotatably connected, a leaking body having a leak selection hole formed on the side facing the handling cylinder is disposed in the handling chamber case, and the leaking body is attached to the rotation support arm. A threshing machine characterized in that the threshing machine is connected to serve as a receiving net and a reinforcing member for the handling room case. 2. The threshing machine according to claim 1, wherein the leaking body is constituted by a metal plate having the leak sorting hole formed by a punching means. 3. The threshing machine according to claim 1, wherein the leaking body is connected to an intermediate portion of the fulcrum shaft.