JP3974715B2 - Thresher - Google Patents

Description

[0001]
BACKGROUND 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 mouth plate arranged along a lower portion of a mouth of a handling room.
[0002]
[Prior art]
Conventionally, a handling cylinder of a threshing part is rotatably mounted on an interior shaft, and a handling cylinder cover that covers the upper side of the handling cylinder is handled with a fulcrum shaft provided on a lower case opposite to the handling opening as a rotation center. A lock mechanism is provided that allows the mouth side to be opened and that fixes the barrel cover when closed. By operating the lock lever of the lock mechanism, the barrel cover is released, and the barrel cover is A threshing machine that opens upward and enables cleaning and maintenance work in a handling chamber is known. A handling plate is arranged along the bottom of the handling port of such a threshing machine, and threshing is performed by supplying cereals into the handling chamber by a feed chain from the gap between the handling plate and the handling cylinder. Is done.
[0003]
[Problems to be solved by the invention]
By the way, when the maintenance cylinder cover is opened upward with the fulcrum shaft as the center to perform maintenance work in the handling chamber, the handling plate is positioned above a straight line connecting the fulcrum shaft and the center of the handling cylinder. When the handle cover is opened, the tooth handling provided on the outer periphery of the handle cylinder moves around the fulcrum shaft, so the movement locus of the tooth handling is the same as when the handle cover is closed. It comes out outside (the mouth opening side) from the rotation locus of the tooth handling center.
[0004]
On the other hand, in the conventional structure of the mouthpiece plate, there is a possibility that the toothing teeth may interfere with the mouthpiece plate when the handlebar cover is opened, so conventionally, when the handlebar cover is opened, the rotation of the handlebar is stopped. After that, the handling cylinder cover was opened with care so as not to cause interference by utilizing the gap between the tooth handling teeth. However, if the opening operation is mistaken, there is a problem that the tooth handling interferes with the mouth plate and an abnormal sound is generated.
[0005]
The present invention has been made to solve such a problem, and the object of the present invention is to handle teeth of the handling cylinder when the handling cylinder cover that is pivotally mounted on the interior of the handling cylinder is opened upward. An object of the present invention is to provide a threshing machine capable of preventing interference with a mouth plate.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 includes a handling cylinder (12) having a large number of teeth (16) disposed on an outer peripheral portion, and an internal shaft frame that can rotate the handling cylinder (12). And a lower case (54) provided with a handling cover (48) covering the upper part of the handling cylinder (12) and a sorting device (20, 28,...) Provided below the handling cover (48). ), And a handling chamber (56) is formed between the handling cover (48) and the lower case (54), and a fulcrum shaft (62) provided on the lower case (54) side is centered. In the threshing machine (10) in which the handling cylinder cover (48) can be opened and closed integrally with the handling cylinder (12),
A relief groove (64) for the handle (16) is formed on the handle plate (60) disposed along the lower side of the handle of the handling chamber (56) on the lower case (54) side. It is characterized by.
[0007]
The invention described in claim 2 is characterized in that the relief groove (64) is formed only in a portion corresponding to the handling cylinder end side of the handling plate (60).
[0008]
[Action]
As described above, the threshing machine (10) according to the present invention includes a handling cylinder cover (48) covering the upper side of the handling cylinder (12) in which a large number of tooth handling teeth (16) are arranged on the outer peripheral portion, and the handling cylinder cover ( 48) and a lower case (54) provided below, and the handle cylinder (12) is rotatably pivotally mounted on the handle cylinder cover (48) and the lower case (54). ) Accommodates sorting devices (20, 28,...) Inside. A handling chamber (56) is formed between the handling cylinder cover (48) and the lower case (54), and the handling cylinder cover (48) and the handling cylinder (12) are arranged at the lower part. The fulcrum shaft (62) provided on the case (54) side can be opened and closed integrally.
[0009]
On the lower case (54) side, a mouth plate (60) forming the handling chamber (56) on the mouth side is disposed along the lower side of the mouth of the handling chamber (56). In addition, the portion located above the straight line (A-A) connecting the fulcrum shaft (62) and the barrel (12a) supporting the barrel (12 ) in the mouthplate (60) is not handled. A relief groove (64) is formed to prevent the tooth handling (16) from interfering with the mouthpiece plate (60) during the opening operation of the trunk cover (48).
[0010]
In addition, the code | symbol in the parenthesis mentioned above is for contrasting drawing, Comprising: The invention specific matter of this invention is not limited at all.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
1 and 2 show a threshing machine mounted on a self-removing combine harvester, and this threshing machine 10 includes a first handling cylinder 12 and a second handling cylinder 14, and these handling cylinders 12, 14 is supported rotatably around a rotation axis along the feeding direction of the cereal. Further, these handling cylinders 12 and 14 have handling teeth 16 and 18 on their outer peripheral surfaces, respectively, and cover substantially the lower sides of the handling cylinders 12 and 14 at positions separated from the outer peripheral surfaces by a predetermined distance. Thus, receiving networks 20 and 22 are provided, respectively. In addition, a feed chain 24 is disposed along the feeding direction of the cereals on the side of the handling port 58 that supplies the cereals to the handling chamber 56 in which the first handling cylinder 12 is installed. One end thereof is provided close to the end of a stock transport chain (not shown), and the other end is provided close to one end of the exhaust wall chain 26.
[0013]
A swinging cereal plate 28 is provided below the first handling cylinder 12, and a swing sheave 30, a crimp net 32, and a chaff sheave 34 are disposed below and downstream of the second handling cylinder 14. . These oscillating cereal plates 28, swing sheaves 30 and the like are configured to be integrally oscillated by a drive source (not shown).
[0014]
A rotary fan 36 that is rotationally driven by a drive source (not shown) is disposed below the oscillating cereal plate 28, and a suction fan 38 that is also rotationally driven is disposed above the swing sheave 30. ing. The suction fan 38 generates wind in the direction from the tang fan 36 to the suction fan 38 in order to discharge unnecessary materials lighter than the grain.
[0015]
A first spiral 40 is disposed below the crimp net 32, and the first spiral 40 is linked to a cereal cylinder 42 incorporating a cereal. These spirals are shafts having spiral blades that are rotated by a drive source (not shown), and transfer the grains leaked from the crimp net 32 and the like to a grain tank (not shown). To do. Further, on the right side of the No. 1 spiral 40, a No. 2 spiral 44 is arranged substantially parallel to the No. 1 spiral 40. The No. 2 spiral 44 is a longitudinal feed communicating with the swing sorting side. Linked to the helical cylinder 46.
[0016]
As shown in FIG. 3, the first handling cylinder 12 has a handling cylinder shaft 12 a that is rotatably mounted through front and rear walls 50 and 51 that constitute the handling cylinder cover 48, and the upper side is the ceiling. Covered by a plate 52. A lower case 54 having a sorting device made up of the above-described swing sheave 30, No. 1 spiral 40, etc. is disposed below the handling cylinder cover 48, and between the handling cylinder cover 48 and the lower case 54. A handling chamber 56 is formed.
[0017]
A fulcrum shaft 62 is provided above the lower case 54 opposite to the handle 58 in the handling cylinder cover 48, and the handling cylinder cover 48 is attached to the fulcrum shaft 62 via an arm 66 and a support frame 68. It is attached to the shaft. With the fulcrum shaft 62 as the center, the handling cylinder cover 48 can be opened and closed integrally with the first handling cylinder 12 so that the handling port 58 side can be opened.
[0018]
Further, a holding rail 25 for holding the cereals is disposed oppositely on the side of the handling port 58 in the handling cylinder cover 48 and above the feed chain 24, and on the lower case 54 side below the handling port 58. Is provided with a mouth plate 60 along the grain feeding direction. The mouth plate 60 is formed with a curved surface on the side facing the outer peripheral portion of the first handling cylinder 12, and starts from the feed direction of the cereal in order to reduce the grain taken out during threshing. It is formed to extend upward from the side (front in the feeding direction) to the end side (back in the feeding direction).
[0019]
A damper cylinder (not shown) is interposed between the barrel cover 48 and the lower case 54, and when the barrel cover 48 is moved upward and opened, the barrel cover 48 is urged in the opening direction. Making it easier to lift. With the handling cylinder cover 48 opened, maintenance inside the handling chamber 56 is possible.
[0020]
Here, in the present invention, a relief groove for the tooth handling 16 is formed in the mouth plate 60 disposed along the lower side of the mouth of the handling chamber 56 on the lower case 54 side.
[0021]
As shown in FIG. 3, the upper portion of the handling plate 60 is located above a straight line AA connecting the fulcrum shaft 62 and the handling barrel shaft 12a when the handling cover 48 is opened. When the case cover 48 is opened, the tooth locus of the first handle 12 is closer to the handle 58 side (feed chain 24 side) than the turning locus of the teeth 16 when the case cover 48 is closed. Will come out.
[0022]
That is, as shown in FIG. 4, when the handling cylinder cover 48 is opened, the tooth handling locus C of the first handling cylinder 12 is more than the rotation locus B of the tooth handling 16 when the handling cylinder cover 48 is closed. Therefore, the tooth handling 16 and the inner curved portion on the terminal end side of the mouthpiece plate 60 interfere with each other in the region D (shaded portion).
[0023]
Therefore, as shown in FIG. 1 and FIG. 3 described above, these teeth are opposed to the teeth 16 by several rows (three rows in the figure) of the teeth 16 on the terminal end side of the handle 58 along the grain feeding direction. On the side of the mouth plate 60 to be processed, relief grooves 64 of the tooth handling teeth 16 having a depth of about 5 mm are formed. This is because the handling plate 60 is formed so as to extend upward as it goes from the start side to the end side in the grain feeding direction, and therefore when the handling cover 48 is opened / closed around the fulcrum shaft 62. This is because the terminal end side of the mouthpiece plate 60 is likely to come into contact with the teeth 16.
[0024]
Next, the operation in the present embodiment will be described.
[0025]
The cereals harvested by the pre-processing unit of the combine are carried into the handling chamber 56 from the handling port 58 by the feed chain 24, threshed by the cooperative action of the first handling cylinder 12 and the handling cylinder cover 48, and swung. Sorting is performed by a rocking sorting unit including a drifting grain board 28 and a swing sheave 30. And, during threshing in the handling chamber 56, the cereals change in a pulsating manner by the escape grooves 64 formed in the handling plate 60, and the action that the unhandled residue is reduced due to the separation action during threshing. In addition, the grain is received by the escape groove 64, and the amount of scattered grains is relaxed and the grain taken out is reduced.
[0026]
On the other hand, when performing maintenance in the handling chamber 56, when the handling cover 48 is opened and closed, the handling teeth 16 disposed on the outer peripheral portion of the first handling cylinder 12 are particularly handled by the escape groove 64. Contacting the end of the mouthplate 60 with the end of the barrel is avoided, and interference between the teeth 16 and the mouthpiece 60 is prevented.
[0027]
【The invention's effect】
According to the first aspect of the present invention, when the handle cover is disposed on the lower case side along the lower handle of the handling chamber, the tooth handling relief groove is formed, so that the handling cover is opened and closed. The tooth handling does not come into contact with the mouthpiece plate, and therefore it is possible to prevent the generation of abnormal sound due to the interference between the tooth handling and the mouthpiece plate.
[0028]
According to the second aspect of the present invention, since the tooth escape groove is formed only in the portion corresponding to the terminal end side of the mouthpiece of the mouthpiece plate, the cereals carried into the handling chamber from the mouthpiece are Since it changes in a pulsating manner by the groove, it can be separated during threshing to further reduce unhandled residue. Moreover, since the cereal is threshed in a state where it is received by the rear portion of the barrel by the escape groove, the scattered grains are relaxed, and the amount of grains taken out can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view of a threshing machine mounted on a self-detaching combine.
FIG. 2 is a side view of the above threshing machine.
FIG. 3 is a front view of the above threshing machine.
FIG. 4 is an enlarged front view showing the relationship between the rotation locus of the tooth handling on the outer periphery of the handling cylinder and the mouth plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Threshing machine 12 1st handling cylinder 12a Handling cylinder 16 Handling teeth 20 Receiving net 24 Feed chain 28 Oscillating flow grain board 30 Swing sheave 32 Crimp net 48 Handling cylinder cover 54 Lower case 56 Handling chamber 58 Handling opening 60 Handling opening board 62 fulcrum shaft 64 relief groove

Claims (2)

A threshing drum which many扱歯is disposed on the outer periphery, and a thresher cover for covering the upper side of該扱cylinder while rotatably furnished creel a該扱cylinder at thresher axis, below the該扱cylinder cover A lower case provided with a sorting device, and forming a handling chamber between the handling case cover and the lower case, and the handling case cover around a fulcrum shaft provided on the lower case side. In a threshing machine that can be opened and closed integrally with the barrel,
A handling plate is disposed along the lower side of the handling chamber on the lower case side ,
In order to prevent interference with the teeth when the handle cover is opened upward in a portion located above the straight extension line connecting the handle shaft and the fulcrum shaft in the handle plate. Formed a relief groove for the tooth handling,
Thresher characterized by that. The escape groove was formed only in a portion corresponding to the handling cylinder end side of the mouth plate,
The threshing machine according to claim 1.

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