WO2023074815A1

WO2023074815A1 - Threshing cylinder

Info

Publication number: WO2023074815A1
Application number: PCT/JP2022/040214
Authority: WO
Inventors: 高木雅志; 熊谷雅行
Original assignee: 株式会社クボタ
Priority date: 2021-11-01
Filing date: 2022-10-27
Publication date: 2023-05-04
Also published as: CN118159128A; JP2023067434A

Abstract

In a threshing cylinder, at least one threshing tooth support member 40 is provided such that the position of the leading end of the threshing tooth support member 40 and the position of the trailing end of a spiral vane 33 are the same in the circumferential direction of a raking section 30.

Description

handle

The present invention relates to a handling cylinder.

As shown in Patent Document 1, a baling drum support shaft (rotational shaft) is rotatably provided in a baling chamber into which the whole harvested crops are put, in a posture along the front-rear direction of the baling chamber. a raking portion supported by the front portion of the sling drum support shaft and raking the thrown crop toward the rear of the threshing chamber; and a shaving section for shaving the crops that have been raked by the raking section. Further, in this type of squeezing cylinder, the scraping portion is provided with a base portion and a spiral blade provided on the outer peripheral portion of the base portion. and a plurality of rod-shaped bristle tooth support members supported by the shaving drum support shaft in a state spaced apart in the circumferential direction of the shaving portion, and each of the plurality of bristle tooth support members. a plurality of rod-shaped cusps supported by the cusp supporting member in a state of protruding radially outwardly of the processing portion and spaced apart in a direction along the threshing cylinder support shaft. there is something

Japanese Patent Application Publication No. 2019-4765 (JP 2019-004765 A)

In the above-described shaving cylinder, since a plurality of tooth servicing support members are arranged at intervals in the circumferential direction of the shaving portion on the rear side of the scraping portion, the front end portion of the shaving portion is moved by the scraping portion. If the crops that have been raked into the threshing tooth support members enter the gaps between the threshing support members, the threshing material will not be transferred to the threshing part, and the flow of the threshed material in the threshing part will be poor. Become.

The present invention provides a squeezing cylinder that can smoothly transfer the crops that have been scrambled into the scouring processing unit by the scouring unit.

The baling drum according to the present invention comprises a baling drum spindle which is rotatably provided in a baling chamber into which the whole harvested crops are put so as to follow the longitudinal direction of the baling chamber; a raking portion for raking the supported and thrown-in crop toward the rear of the thrift chamber; a shaving processing part for shaving the crops that have been rake in; the raking part is provided with a base part and a spiral blade provided on the outer peripheral part of the base part; a plurality of rod-shaped bristle tooth support members supported on the scouring cylinder support shaft in the processing unit along the scouring drum shaft and spaced apart in the circumferential direction of the scouring processing unit; In each of the tooth treatment support members, the treatment tooth support member protrudes radially outward of the treatment processing unit and is spaced apart in the direction along the treatment barrel support shaft. a plurality of rod-shaped bristle teeth supported by tooth supporting members, and at least one of said bristle tooth supporting members is positioned such that a front end position of said bristle tooth supporting member in the circumferential direction of said raking portion is located at said spiral blade is provided so as to be the same as the end position of the

According to this configuration, since the crop that has been raked into the front end portion of the threshing portion by the raking portion and detached from the spiral blade is received by at least one bristle support member, the crop as threshed material from the raking portion can be smoothly handed over to the processing unit.

In the present invention, it is preferable that a plurality of the helical blades are provided, and one or more bristle support members are positioned between terminal end portions of the helical blades that are adjacent in the circumferential direction of the raking portion. be.

According to this configuration, since the interval between the end portions of the spiral blades adjacent in the circumferential direction of the raking portion is not so narrow, the crops are not densely ragged into the shaving portion by the respective helical blades, and the crops are scrambled. It can be passed smoothly so as not to get stuck in the department.

In the present invention, the plurality of service teeth supporting members are provided with a service tooth located closest to the front end side of the service tooth support member among the plurality of service teeth of the service tooth support member, and a rear end portion of the base portion. A first bristle tooth support member having a narrow interval between the bristle tooth support member, and a bristle tooth positioned closest to the front end side of the bristle tooth support member among the plurality of bristle teeth of the bristle tooth support member and the rear end of the base portion A second bristle support member with a wide interval is provided, and in the circumferential direction of the raking portion, the terminal position of the spiral blade and the front end position of the second bristle support member are the same. preferred.

The crop that has been rake into the front end of the handling section by the raking section is placed in a second bristle supporting member in which the distance between the rear end of the base section and the bristle adjacent to the rear end is wider than that of the first bristle supporting member. Since the bristle teeth are received by the bristle support member, the bristle teeth are less likely to interfere with the crop reception of the second bristle support member, and the crops from the raking section can be smoothly transferred to the shaving processing section.

In the present invention, it is preferable that a plurality of the spiral blades are provided, and that the end positions of all the spiral blades and the front end position of the bristle support member are the same in the circumferential direction of the raking portion. is.

According to this configuration, since the crops that have been raked into the front end portion of the shaving portion by the raking portion and deviated from all the spiral blades are received by the bristle tooth support member, the crops from the raking portion are smoothly transferred to the shaving portion. can be inherited by

It is a side view which shows the whole common type combine. It is a longitudinal side view of a threshing device. It is a longitudinal rear view of the rear side of the scraping portion of the threshing cylinder. FIG. 4 is an exploded view of a portion of the scouring drum where the rear portion of the scraping portion and the front portion of the scouring processing portion are located.

An embodiment, which is an example of the present invention, will be described below with reference to the drawings.
In the following description, the direction of arrow F shown in FIG. The direction of the arrow D is defined as "bottom of the machine body", the direction toward the front side of the paper is defined as "left side of the machine body", and the direction toward the back side of the paper is defined as "right side of the machine body".

[Overall of a standard combine harvester]
As shown in FIG. 1, the ordinary combine harvester includes a body frame 1 constructed by connecting a plurality of steel materials such as square pipe materials, and a pair of left and right crawler type traveling devices 2 provided at the bottom of the body frame 1. It is equipped with a running body having A driving unit 4 and a harvesting and conveying device 6 are provided in the front part of the traveling machine body (front part of the machine body). The driver's seat 3 is provided in the driver's seat 4 . The harvesting and conveying device 6 includes a harvesting section 8 which is provided at the front portion of the harvesting and conveying device 6 and harvests the stalks of rice, wheat, buckwheat, and the like as crops to be planted in a field by using a clipper-type reaping device 7 . and a conveying device 9 provided at the rear of the harvesting conveying device 6 for conveying harvested grain culms harvested by the harvesting unit 8 to a predetermined location of the traveling machine body. A threshing device 10 that receives harvested grain culms transported by a transport device 9 and performs threshing processing at the rear part of the traveling machine body (body rear part), and performs sorting processing of threshed products (crops) after threshing, and a threshing device 10. A grain tank 11 is provided for collecting and storing the grains obtained by. The threshing device 10 and the grain tank 11 are provided side by side. A grain discharging device 12 for discharging grains from the grain tank 11 is connected to the rear portion of the grain tank 11 .

[Construction of Conveying Device]
As shown in FIGS. 1 and 2 , the conveying device 9 has a conveying case 13 extending from the rear portion of the harvesting section 8 to the front portion of the threshing device 10 . Inside the transport case 13, an endless rotating band 14 is provided rotatably over the lower part of the transport case and the upper part of the transport case. A plurality of locking and conveying portions 14a are provided in the longitudinal direction of the endless rotating band 14. As shown in FIG.

In the conveying device 9, the locking conveying portion 14a is conveyed by the endless rotary belt-like body 14, and the harvested grain culms from the harvesting portion 8 are conveyed by the locking conveying portion 14a inside the conveying case 13 and conveyed to the threshing barrel. 21 is thrown into the scraping part 30 provided in the front part thereof.

[Configuration of threshing device]
In the explanation of the threshing device 10 and the threshing cylinder 21, the processing starting end side of the threshing device 10 and the threshing cylinder 21 [grain culm input side (the left side of the paper surface of FIG. 2)] is defined as "front", and the processing of the threshing device 10 and the threshing cylinder 21. The terminating side [the culm discharge side (the right side of the paper surface of FIG. 2)] is defined as "rear".

As shown in FIG. 2, the threshing apparatus 10 includes a threshing section 10A provided in the upper part of the threshing apparatus 10, and a sorting section 10B provided below the threshing chamber 20 in the threshing section 10A. In the threshing device 10, the threshing processing direction in the threshing section 10A is set to coincide with the longitudinal direction of the traveling machine body, and the upper side of the threshing processing direction is set to be positioned on the front side of the traveling machine body.

As shown in FIG. 2, the threshing part 10A has a threshing chamber 20 formed in the upper part of the threshing device 10. As shown in FIG. A handling cylinder 21 is provided in the handling chamber 20 . The handling cylinder 21 is rotationally driven around the handling cylinder support shaft 22 in a clockwise direction in a front view (a handling cylinder rotation direction indicated by an arrow X in FIG. 3). A supply port 23 is formed in the lower front portion of the hulling chamber 20 to allow the harvested culms to be introduced into the hulling chamber 20 . A dust discharge port 24 is formed in the lower rear portion of the handling chamber 20 to enable discharge of threshed products such as threshed culms and cut straws to the outside of the handling chamber. A receiving net 25 is provided around the lower portion of the handling cylinder 21 (a region below the handling cylinder 21 in the periphery of the handling cylinder 21). The receiving net 25 is configured in a concave shape.

The handling chamber 20 is formed by a front support wall 26 and a rear support wall 27 that support the handling cylinder 21, a top plate 28 provided above the handling cylinder 21, a receiving net 25, and the like. A plurality of dust valves 29 are arranged in the front-rear direction of the handling chamber 20 inside the top plate 28 . As shown in FIG. 2, the threshing drum 21 includes a raking portion 30 provided at the front portion of the threshing drum 21 for raking the crops to be threshed toward the rear of the threshing chamber 20, and the threshing drum 21. Of these, a scraping processing unit 31 is provided at a portion behind the scraping unit 30 and performs a scraping processing of the threshed material. The scraping portion 31 is continuous with the rear portion of the scraping portion 30 .

In the threshing section 10A, all the culms from the root to the tip of the harvested grain culms thrown into the front portion of the threshing chamber 20 through the supply port 23 by the locking conveying section 14a of the conveying device 9 are threshed into the threshing section. The husks are threshed toward the rear of the threshing drum 21 by the threshing drum 30 and threshed by the threshing section 31 and the receiving net 25 . The threshed material to be threshed hits the dust valve 29 with turning force given by the rotating threshing unit 31 and is guided by the dust valve 29 so as to flow toward the rear of the threshing chamber 20 . The threshed material is threshed while being transferred toward the rear of the threshing chamber 20 by the threshing processing unit 31 . The grain obtained by the threshing process leaks from the receiving net 25. - 特許庁Threshed materials such as threshed culms and cut straws generated by the threshing process are discharged from the dust discharge port 24 to the outside of the threshing chamber 20 .

[Construction of handle]
As shown in FIG. 2, the handling cylinder 21 is provided in the handling chamber 20 in a posture along the longitudinal direction of the handling chamber 20 . In the handling cylinder 21, a handling cylinder support shaft 22 is provided in the handling chamber 20 in a posture along the front-rear direction of the handling chamber 20, and is driven to rotate about the center P of the handling cylinder shaft. and a scraping processing unit 31 supported by the scouring barrel support shaft 22 in a manner continuous with the rear portion of the scraping unit 30. - 特許庁

[Structure of raking part]
As shown in FIG. 2, the scooping portion 30 includes a base portion 32 supported on the front portion of the threshing drum support shaft 22, and a base portion 32 raised from the outer peripheral portion of the threshing drum radially outwardly from the base portion 32. A spiral blade 33 is provided. In this embodiment, the base portion 32 is formed of a sheet metal member wound into a truncated cone shape, and is tapered toward the front end side of the handling cylinder 21 with a smaller diameter. The base portion 32 is supported by the threshing cylinder support shaft 22 by connecting the front end portion of the base portion 32 and the threshing drum support shaft 22 with a front disk member (not shown), and the rear end portion of the base portion 32 is supported. and the barrel support shaft 22 are connected by the first middle disk member 35 . Three spiral blades 33 are provided in parallel, and the spiral blades 33 form a triple spiral.

As shown in FIG. 2 , a guide section 34 that guides harvested grain culms from the supply port 23 to the raking section 30 is provided below the raking section 30 . The guide portion 34 is provided so as to be inclined forward downward.

In the scraping portion 30, the base portion 32 is driven by the threshing barrel support shaft 22 through the front disc member and the first middle disc member 35, and the triple spiral blades 33 move the threshing drum shaft center P. It is rotationally driven around the center of rotation. All the culms from the stem to the tip of the harvested grain culms thrown into the front part of the handling chamber 20 through the supply port 23 by the locking conveying part 14a of the conveying device 9 are moved along the guide part 34 by the rotating spiral blades 33. The material is scraped toward the rear portion of the handling cylinder 21 .

[Structure of Handling Processing Unit]
As shown in FIGS. 2 and 3, the shaving processing unit 31 is provided with a plurality of shaving teeth supporting members 40 which are supported by the shaving cylinder support shaft 22 in a state of being arranged in the circumferential direction of the shaving cylinder 21 at intervals. there is In this embodiment, six treatment tooth support members 40 are provided. Each bristle tooth supporting member 40 is constituted by a rod-shaped member extending in the direction along the bristle cylinder axis P. As shown in FIG. The bristle tooth supporting member 40 is supported by the bristle drum supporting shaft 22 by supporting the front end portion 40f (see FIG. 4) of the bristle tooth supporting member 40 on the first intermediate disc member 35 and through the first intermediate disc member 35. The rear end of the tooth support member 40 is supported by the rear disk member 36 and connected to the tooth support shaft 22 via the rear disk member 36. A portion located between the front end portion 40f and the rear end portion of the carriage 40 is supported by the second intermediate disc member 41 and connected to the threshing barrel support shaft 22 via the second intermediate disc member 41. It is The front end portion 40f of the bridle tooth support member 40 is supported by the first middle disc member 35 by connecting a bracket 43 provided at the front end portion 40f to the first middle disc member 35. As shown in FIG. The bracket 43 is connected to the first middle disc member 35 by a connecting bolt. The second middle disk member 41 is provided at a plurality of locations in the axial direction of the barrel support shaft 22 . Treating teeth 42 are provided upright on a treating tooth supporting member 40 as an outer peripheral portion of the treating portion 31 of the treating cylinder 21 toward the outer side in the radial direction of the treating cylinder. The handling teeth 42 are erected from a plurality of positions on the handling tooth supporting member 40 in the axial direction of the handling cylinder. The handling tooth 42 is configured by a rod-shaped member. The handling processing unit 31 is configured in a basket shape.

In this embodiment, the handling teeth 42 are provided in a posture along the radial direction of the handling cylinder 21, but are provided in a posture inclined with respect to the radial direction of the handling cylinder 21, such as a posture having a receding angle. may be

In the shaving portion 31 , the servicing tooth support member 40 is driven by the shaving barrel support shaft 22 via the first middle disk member 35 , the second middle disk member 41 and the rear disk member 36 so that the shaving teeth 42 are driven. The threshing cylinder is driven about the axis P of the threshing cylinder as the center of rotation, and the threshing material moves between the inside and the outside of the threshing cylinder 21 through the space between the threshing teeth support members 40, while the threshing teeth 42 and the receiving net 25 are moved. The threshing action is performed by receiving the squeezing action of the bristle tooth supporting member 40 and the threshing action by the impact of the threshing tooth support member 40 .

In other words, the handling cylinder 21 is configured in a basket shape in which an internal space S1 (see FIG. 2) communicating with the handling chamber 20 is formed through the teeth supporting members 40, and the outer circumference of the handling cylinder 21 is A plurality of bristle teeth 42 protruding radially outward from the surface of the bristle drum are arranged in a state of being spaced apart in the circumferential direction and the processing direction of the bristle drum 21, forming a so-called bar-shaped bristle drum. I have

Therefore, the threshing cylinder 21 rotates around the threshing cylinder support shaft 22 in the processing direction, so that the threshed material (crops) from the raking unit 30 is moved between the threshing processing unit 31 and the receiving net 25 . Introduce. The threshing cylinder 21 applies a threshing process to the threshed material positioned in the threshing space S2 (see FIG. 2) between the receiving net 25 and the threshing process by striking with the threshing teeth support member 40 and the threshing teeth 42 or by combing the threshing teeth 42. to allow the threshed material obtained by this threshing process to enter the internal space S1, and while stirring the threshed material in the threshing process space S2 and the threshed material in the internal space S1, these threshed materials Then, the threshing process is performed by hitting the bristle tooth support member 40 and bristle tooth 42 or combing the bristle tooth 42 .

In this embodiment, the bristle tooth support member 40 is made of a round pipe steel material. Various bar-shaped members such as round steel, square bar steel, and square pipe steel can be adopted as the bristle tooth support member 40 in addition to the round pipe steel. In this embodiment, each treatment tooth 42 is made of a round steel material. Various bar-shaped members such as a square bar steel, a round pipe, and a square pipe can be used for the handle 42 in addition to the round steel.

FIG. 4 is a developed view of a portion of the squeezing cylinder 21 where the rear portion of the scraping portion 30 and the front portion of the squeezing processing portion 31 are located. As shown in FIG. 4 , at least one bristle tooth support member 40 is arranged so that the front end position (the position of the front end 40 f ) of the at least one bristle tooth support member 40 in the circumferential direction of the raking portion 30 is the terminal end position of the spiral blade 33 . (the position of the terminal portion 33r). In the present embodiment, the end positions of all the spiral blades 33 are configured to be the same as the front end position (the position of the front end portion 40f) of the tooth support member 40 in the circumferential direction of the raking portion 30. . The crops that have been raked into the handling portion 31 by the raking portion 30 are received by the bristle support member 40, and the crops from the raking portion 30 are smoothly transferred to the shaving portion 31.例文帳に追加In this embodiment, as shown in FIG. 3, the terminal end portion 33r of the spiral blade 33 is displaced from the axial center 40c of the toothpick support member 40 to the downstream side in the rotation direction X of the toothpick support member 40. The rear end portion 33r of the spiral blade 33 is shifted to the upper side in the rotation direction X of the threshing cylinder with respect to the axial center 40c of the toothpaste support member 40, or the end portion 33r of the spiral blade 33 is the axial center of the toothpaste support member 40 40c may also be used. It is preferable that there is no gap in the front-rear direction of the barrel between the terminal end portion 33r of the spiral blade 33 and the front end portion 40f of the bristle tooth support member 40. It is sufficient that the delivery of the crops to the member 40 is performed without any trouble.

As shown in FIG. 3, the bristle support member 40 is positioned between the end portions 33r of the spiral blades 33 adjacent in the circumferential direction of the raking portion 30. As shown in FIG. In this embodiment, only one bristle tooth support member 40 is positioned between the terminal end portions 33r of the adjacent spiral blades 33. Alternatively, one or more tooth support members 40 may be positioned. The interval between the end portions 33r of the spiral blades 33 adjacent in the circumferential direction of the raking portion 30 is not so narrow, and the raking portion 30 does not rake the crops into the handling portion 31 densely.

As shown in FIGS. 2 and 4, each bristle support member 40 is configured such that the spacing between adjacent bristle teeth 42 is constant, and along the bristle cylinder axis P in each bristle support member 40 The arrangement pitch of the treatment teeth 42 in the direction is configured to be the same. As shown in FIG. 4, the six bridle support members 40 include a bridle 42a positioned closest to the front end of the briquettes 42 of the briquettes support member 40 and a base portion. A first bristle support member 40a and a second bristle support member 40b having different distances K from the rear end 32r of 32 are provided. The interval K of the second bristle tooth support member 40b is configured to be wider than the interval K of the first bristle tooth support member 40a. That is, it is configured such that the interval K between the first bristle tooth supporting members 40a is narrow and the interval K between the second bristle tooth supporting members 40b is wide. In the circumferential direction of the raking portion 30, the terminal end position 33r of the spiral blade 33 and the front end position of the second bristle tooth support member 40b are configured to be the same. The distance K between the rear end portion 32r of the base portion 32 and the adjacent bridle 42a adjacent to the rear end portion 32r of the crop that is raked into the shaving portion 31 by the raking portion 30 is wider than the first bridle support member 40a. It is received by the second bristle support member 40b, and the bristle handling section 31 takes over the crop from the raking section 30 in a state in which the bristle 42a hardly becomes an obstacle.

[Structure of Sorting Unit]
As shown in FIG. 2, the sorting section 10B includes a swing sorting device 45 provided below the receiving net 25 so as to be swingable, a winnow 46 provided in front and below the swing sorting device 45, and a winnow. A first recovery section 47 and a second recovery section 48 provided below the rocking sorting device 45 are provided behind the 46 . In this embodiment, the first recovery section 47 and the second recovery section 48 are configured by screw conveyors extending in the width direction of the threshing device 10 .

In the sorting section 10B, the processed materials leaked from the receiving net 25 are dropped into the rocking sorting device 45 and received, and the received processed materials are transported backward by the rocking sorting device 45 and shaken. In addition, the sorting wind supplied from the front lower side of the swing sorting device 45 toward the rear of the swing sorting device 45 is received by the winnow 46 and sorted. The clear grains as the first processed material obtained by the sorting process flow down to the first collecting section 47 and are collected, and are conveyed by the first collecting section 47 to the lateral outer side of the grain tank side of the threshing device 10 . The unprocessed grains as the second processed material obtained by the sorting process flow down to the second collection unit 48 and are collected, and are conveyed by the second collection unit 48 to the lateral outer side of the grain tank side of the threshing device 10. . Sorting dust such as straw waste as the third processed material generated by the sorting process is discharged to the rear of the threshing device 10 together with the sorting wind from the dust outlet 49 provided at the rear of the threshing device 10 .

The fine grains transported by the No. 1 recovery unit 47 are supplied to the grain tank 11 by the grain raising device 50 connected to the No. 1 recovery unit 47 . The untreated grains transported by the No. 2 recovery unit 48 are returned to the starting end of the rocking sorting device 45 by the return device 51 connected to the No. 2 recovery unit 48 .

[Another embodiment]
(1) In the above-described embodiment, an example in which six tooth support members 40 and three spiral blades 33 are provided was shown, but the present invention is not limited to this. For example, 5 or less or 7 or more bristle

tooth support members

40 and 2 or less or 4 or more spiral blades 33 may be provided. As for the combination of the number of bristle tooth support members 40 and the number of spiral blades 33, the number of spiral blades 33 is a combination corresponding to the greatest common divisor of the number of bristle tooth support members 40, or Any other combination may be used.

(2) In the above-described embodiment, an example is shown in which the front end positions (positions of the front ends 40f) of the three bristle tooth support members 40 are the same as the terminal end positions of the spiral blades 33, but the present invention is not limited to this. The position of the front end (the position of the front end 40 f ) of at least one bristle tooth support member 40 should be the same as the position of the terminal end of the spiral blade 33 .

(3) In the above-described embodiment, an example was shown in which only one bristle support member 40 is positioned between the terminal ends 33r of the adjacent spiral blades 33. However, the present invention is not limited to this. Two or more tooth support members 40 may be positioned between the terminal end portions 33r.

(4) In the above-described embodiment, an example was shown in which the end position of all the spiral blades 33 and the front end position of the tooth support member 40 (the position of the front end 40f) are the same, but the present invention is not limited to this. . The end position of only some of the plurality of spiral blades 33 may be the same as the front end position of the bristle tooth support member 40 (the position of the front end portion 40f).

(5) Although the example provided with the first bristle tooth support member 40a and the second bristle tooth support member 40b has been shown, in all the bristle tooth support members 40, the bristle tooth 42a located closest to the front end side of the bristle support member and the bristle tooth 42a The distance K between the base portion 32 and the rear end portion 32r may be the same.

(6) In the above-described embodiment, the base portion 32 is configured to be tapered toward the front end side of the scooping portion 30 so that the outer diameter is smaller, but the present invention is not limited to this. The base portion 32 may be configured to have a constant outer diameter from the front end portion to the rear end portion of the rake portion 30 .

The present invention can be applied to a trough that includes a base portion, a rake portion having a spiral blade, and a plurality of bristle tooth support members.

20 Handling chamber 22 Handling barrel support shaft 30 Raking part 31 Handling part 32 Base part 32r Rear end part 33 Spiral blade 33r Termination part 40 Servicer tooth support member 40a First servicer tooth supporting member 40b Second servicer tooth supporting member 42 Treated tooth 42a Treated tooth K interval on the front end side of the treated tooth support member

Claims

A baling barrel support shaft rotatably provided in a baling chamber into which the whole harvested crops are put so as to extend along the front-rear direction of the baling chamber; and a part of the threshing drum support shaft behind the rake part, which rakes the crop rake in by the rake part. and a handling unit for processing,
The scraping portion is provided with a base portion and a spiral blade provided on the outer peripheral portion of the base portion,
a plurality of rod-shaped bristle tooth supporting members supported by the scouring drum support shaft along the scouring cylinder shaft and spaced apart in the circumferential direction of the scouring processing unit; , in each of the plurality of toothpaste support members, in a state of protruding from the toothpaste support member toward the outer side in the radial direction of the treatment portion, and in a state of being spaced apart in a direction along the support shaft of the treatment barrel; a plurality of rod-shaped teeth supported by the tooth treatment support member;
At least one bridle supporting member is provided such that the front end position of the bristle supporting member is the same as the terminal end position of the helical blade in the circumferential direction of the raking portion.
A plurality of the spiral blades are provided,
2. A trough cylinder according to claim 1, wherein one or more said bristle tooth supporting members are positioned between terminal end portions of said spiral blades adjacent in the circumferential direction of said raking portion.
In the plurality of servicing teeth supporting members, the distance between a servicing tooth positioned closest to the front end side of the servicing tooth support member among the plurality of servicing teeth of the servicing tooth supporting member and the rear end portion of the base portion is narrow. a first servicing tooth supporting member, and a first servicing tooth positioned closest to the front end side of the servicing tooth support member among the plurality of servicing teeth of the servicing tooth supporting member and a rear end portion of the base portion having a wide interval. 2 bristle support members are provided,
3. The truncating cylinder according to claim 1, wherein the terminal end position of the spiral blade and the front end position of the second bristle tooth supporting member are the same in the circumferential direction of the raking portion.
A plurality of the spiral blades are provided,
4. The truncating cylinder according to any one of claims 1 to 3, wherein, in the circumferential direction of the raking portion, all of the spiral blades have the same terminal end position and the front end position of the bristle tooth supporting member. .