JPH07250554A - Threshing barrel for thresher - Google Patents

Abstract

PURPOSE:To obtain a threshing barrel for a thresher capable of properly carrying out grain removal treatment of cut ear while threshing in high performance and recovery of free grain over rack. CONSTITUTION:In a thresher in which a threshing barrel 1 is supported on a shaft in a threshing chamber, a feed chain 2 is installed along a threshing inlet in parallel with the threshing barrel 1, the threshing barrel 1 is longitudinally divided into a front part as a first threshing barrel 3 and a rear part as a second threshing barrel 5 and the barrels are linked and connected to a transmission in such a way that the second threshing barrel 5 is rotated at a speed higher than the first threshing speed, the planting density of threshing teeth 4a of the second threshing barrel 5 is higher than that of the threshing teeth of the first threshing barrel 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing machine for threshing rice, wheat or other agricultural products.

[0002]

2. Description of the Related Art Conventionally, a handling cylinder is mounted on an inside of a handling chamber, a feed chain is provided along a handling opening parallel to the handling barrel, the handling barrel is divided into front and rear, and a front first handling barrel is rotated. A threshing machine in which the number of revolutions of the second handling cylinder that follows is greater than the number of revolutions
It has already been proposed as No. 27907. Then, the implanting densities of the treating teeth of the first handling cylinder and the second handling cylinder of this thresher were made the same.

[0003]

DISCLOSURE OF THE INVENTION The known thresher is
By rotating the second handling cylinder at a higher speed than the first handling cylinder, it is possible to reliably and efficiently perform the shredding treatment without making the handling cylinder length excessive. However, since a very large resistance is applied to the first handling cylinder at the time of initial shedding, the implantation density of the handling teeth cannot be increased. Since it was the same as the body, it was not possible to sufficiently remove the spikelets and the straw grains that were drawn in by just rotating at high speed (increasing the peripheral speed), and the straw particles could not be collected sufficiently.

[0004]

According to the present invention, a handling cylinder is axially mounted in a handling chamber, a feed chain is provided along a handling opening parallel to the handling barrel, and the handling barrel is divided into front and rear portions to form a front portion. The first one
In the thresher in which the second and last handling cylinders are used as the second handling cylinder, and the second handling cylinder is connected to the transmission device so as to rotate at a higher speed than the first handling cylinder, the treatment teeth of the second handling cylinder are planted. The above-mentioned problem was solved by making the density higher than the implantation density of the handling teeth of the first handling cylinder.

[0005]

[Function] When the ear side of the harvest such as grain culm to be threshed is inserted from the supply port into the handling chamber and the stocker side supplies it to the feed chain and the start end of the pinching rail, the ear section rotates at low speed. It is rapidly shredded by the barrel and then transferred to the second handling barrel for further threshing. At that time, since the second treating drum rotates at high speed and the density of the treating teeth is higher than that of the first treating drum, the spikes and the long straws drawn in rotate at high speed. Particles are shredded or shredded by a high-density tooth, and the stab particles that have intervened in the straw culm are surely taken out, leaving almost no stab particles and the straw is discharged from the outlet.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The threshing machine for combine shown in the drawings of one embodiment of the present invention will be described. 1 is a handling cylinder axially mounted in the handling room in the front-rear direction. A large number of handling teeth are planted, a supply port is provided at the front of the handling chamber, an outlet is provided at the rear of the handling chamber, and a nipping and conveying device composed of a feed chain 2 and a nipping rail is provided outside the handling port. .

The handling barrel 1 is divided into a first handling barrel 3 and a second handling barrel 5 in the front and rear, and a second handling barrel shaft 6 of the second handling barrel 5.
Extends to the front wall 8 and an intermediate portion thereof has a long large-diameter cylindrical shaft 6a to enhance rigidity, and the extended portion penetrates the first handling barrel shaft 12 formed of the cylindrical shaft. In the inserted state, the front end is rotatably supported via the bearing 10, the rear part is rotatably supported on the rear wall 8a via the bearing 11, and the first handle barrel shaft 12 has its front end part at the front wall 8a. It is rotatably supported by the transmission case 7 and the cylindrical shaft 6a of the second handling barrel shaft 5 fixed via the bearings 13 and 14.

On the outer peripheral surfaces of the first handling cylinder 3 and the second handling cylinder 5, a large number of handling teeth 4a, ..., 4b .. , When the spacing between the spiral rows is made constant so as not to impede the feeding action, the handle teeth 4a, ... Of the first handling cylinder 3 may have a center angle of 90 degrees in the front and rear spacings in the row, for example. 6, and the handle teeth 4b of the second handle cylinder are, for example, as shown in FIG. 6, planted so that the front and rear intervals in the row are dense at a center angle of 72 degrees. I am doing it. However, the handle teeth 4b of the second handle cylinder 5
It is also possible to select the number of lines in one row for one round to be random, such as 5 to 9, 5 to 7. In any case, since the implanting density of the handling teeth 4b ... Of the second handling barrel 5 is made higher than the implantation density of the handling teeth 4a ... of the first handling barrel 5, the handling teeth of the first handling barrel 3 .. 4a .. .. combined with the fact that they are rough and rotate at a low speed, reasonably shreds the ears immediately after they have been put in, and the teeth 4b of the second cylinder 5 become dense. The fact that the second handling cylinder 5 does not make the length of the second handling cylinder 5 too large and the cutting of the spikes is surely performed and the stuck grains are efficiently removed and taken out of the machine due to the fact that the second handling cylinder 5 is not excessively lengthened. Can be prevented.

The feed handle teeth 4x at the rear end of the first handle cylinder 3
, And the two rows of feed handling teeth 4y at the front of the second handling cylinder 5 have lead angles for shifting the culms to the rear culm mouth side while threshing, and their heights are For example, the feed handle teeth 4y, ... At the front end are approximately half the height of the normal handle teeth 4b, and the subsequent feed handle teeth 4y .. are the normal handle teeth 4b and the feed handle teeth 4y at the front end. The feed tooth 4y on the front side is gradually lowered, for example, by setting the height to an intermediate height. At that time, the rear side may be made to have three or more rows by sequentially increasing the height to the height of the normal handle teeth 4y. The outer peripheral portion of the rear end plate 3a of the first handling cylinder 3 extends rearward to form a large-diameter guide ring 19, and the rear portion of the guide ring 19 is located on the outer periphery of the front end portion of the second handling cylinder 5. Since they are polymerized close to each other, the grain culm is guided from the first handling barrel 3 to the second handling barrel 5 and at the same time, straw debris, long straw, etc. are prevented from entering and wrapping around the shaft. ing.

Further, the input pulley 1 of the transmission case 7
The horizontal input shaft 16 having the number 5 is transmitted to the intermediate shaft 20 in the front-rear direction via the bevel gears 17 and 18, and the large drive sprocket 21 and the small drive sprocket 22 mounted so as to rotate integrally therewith are The driven small sprocket 23 rotatably supported on the handling barrel shaft 6 and the driven large sprocket 24 which is keyed to the first handling barrel shaft 3 so as to rotate integrally, are interlocked and coupled through the chains 25 and 26, and the driven Clutch pawls are provided on the facing surfaces of the small sprocket 23 and the driven large sprocket 24, and a pawl clutch 27 is slidably spline-fitted between them, so that the pawl clutch 27 is a clutch pawl of the driven small sprocket 23. When the second handling cylinder 5 is engaged with the first handling cylinder 3 (the rotation speed is 500
Higher speed (r / p, m) (peripheral speed ratio 1: 1.5)
When the grain damage is extremely suppressed as in the case of harvesting seeds by engaging the claw clutch 27 with the clutch claw of the driven large sprocket 24, the second handling cylinder is rotated. 5 rotates at the same speed as the first handling cylinder 3, that is, at a low speed.

Thus, when the second handling cylinder 5 is rotated at a high speed, the second handling cylinder shaft 6 is elongated so as to extend over the entire length of the handling chamber, and the first handling cylinder is provided in the middle thereof. Since the rear end portion of the shaft 12 is supported, and threshing resistance is applied to one side of the first handling cylinder 3 and the second handling cylinder 5 in this state, the second handling cylinder shaft 6 bends and vibrates. However, since the intermediate portion thereof has the large-diameter cylindrical shaft 6a, the threshing process can be reliably performed in a state where the vibration is extremely small and the noise is small.

Further, the receiving net 28 of the handling chamber has a first receiving net 28a facing the first handling barrel 3, a second receiving net 28b facing the second handling barrel 5, and a third receiving net 28b at the rear. Receiving net 28c (dust inlet 2
9 is divided into three parts, and the meshes of the receiving nets of the first receiving net 28a are the 9th mouth (square hole of which side is 8 mm).
The same applies hereinafter), the second receiving network 28b is the 14th port, the third receiving network 28b
In the case of c, the mesh size of the rear receiving network is gradually made larger than that of the front receiving network such as the 18th mouth. The mesh of each net is configured as described above, so that straw debris does not easily leak at the part of the first handling barrel 3 where a large amount of grain is shredded, and the swing sorting sorts the most. It is possible to prevent the performance from deteriorating and the amount of the second material to increase. On the front side of the second handling cylinder 5, the second handling cylinder 5 rotating at a high speed improves the singulation treatment performance. Leaking can be promoted, and single-grained grains can be swiftly leaked on the rear side to reduce sticking grains.

FIG. 3 shows an example in which the leakage performance of the receiving network is further enhanced, and each receiving network 28a, 28b, 28 is shown.
c is divided into a handling mouth side (front side) and a back side opposite to the handling mouth side (front side) at a portion deviated by 45 degrees from the vertical line passing through the handling barrel axis, and the first receiving net 28a is positioned at the front side portion. 28a-1 and the back side 28
a-2, the second receiving net 28b on the front side 28b-1 and the rear side 28b-2, and the third receiving net 28c on the front side 28c-1.
And the dust-sending port 29, and their meshes are in the above order,
Small (8th mouth), extra small (6th mouth), large (12th mouth), extra large (16th mouth), super-large (25th mouth). The surface of the receiving net is preferably processed with resin.

[0014]

According to the present invention, the handling barrel 1 is mounted in the handling chamber, and the feed chain 2 is provided along the handling port parallel to the handling barrel 1, and the handling barrel 1 is divided into front and rear portions. The second handling cylinder 5 is the first handling cylinder 3 and the rear one is the second handling cylinder 5.
In a thresher that is linked to a transmission so as to rotate at a higher speed than the handling drum 3, the planting density of the handling teeth 4a of the second handling barrel 5 is made higher than the planting density of the handling teeth of the first handling barrel 3. Because I did
The second handling cylinder 5 is rotating at a higher speed than the first handling cylinder 3 and the tooth 4b of the second handling cylinder 5 is planted, although the grain can be easily shredded by the handling cylinder 3. Combined with the fact that the installation density is higher than the installation density of the handle teeth 4a of the first handling cylinder 3, the second handling cylinder 5 is provided with the second graining process for making the grains into single grains and shreds of straw. It is possible to efficiently perform the treatment with the handle teeth 4b, and it is possible to reliably remove the stab grain to the straw and prevent the grain from scattering outside the machine.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a threshing device.

FIG. 2 is a transverse sectional view of the same.

FIG. 3 is a development view showing another example of a receiving network.

FIG. 4 is a vertical cross-sectional view of another example of the handling cylinder.

FIG. 5 is a vertical sectional view of still another example of the handling cylinder.

FIG. 6 is a cross-sectional view showing an arrangement of handle teeth.

FIG. 7 is a cross-sectional view of a handling cylinder drive device.

[Explanation of symbols]

 1 Handle cylinder 2 Feed chain 3 1st handle cylinder 4a, 4b Handle tooth 5 2nd handle cylinder 6 2nd handle cylinder 6a Tube shaft 7 Transmission case 12 1st handle cylinder 19 Guide ring

Claims (1)

[Claims] 1. A handling cylinder 1 is mounted on a shaft in a handling chamber, a feed chain 2 is provided along a handling opening parallel to the handling barrel 1, and the handling barrel 1 is divided into a front part and a front part. In the thresher in which the first handling barrel 3 and the rear one are the second handling barrels 5, and the second handling barrel 5 is linked to the transmission device so as to rotate at a higher speed than the first handling barrel 3, the second handling barrel 5 2. A threshing machine barrel for threshing machines, characterized in that the planting density of the milling teeth 4a is higher than the planting density of the milling teeth of the first barrel 3.