JP7288621B1 - Threshing device threshing drum - Google Patents

Abstract

A threshing cylinder for a threshing apparatus capable of suppressing deformation of the bar frame by increasing the rigidity of the bar frame.
A rotating shaft (30) extending in the front-rear direction is provided with a first supporting member (41) at the front portion thereof, and a second supporting member (35) is provided at the rear portion of the rotating shaft (30). On the rear surface of the member (41) and the front surface of the second support member (35), at positions spaced radially from the rotating shaft (30) at predetermined distances, and circumferentially spaced at predetermined intervals, a plurality of longitudinally extending Extending bar frames (50) are installed, adjacent bar frames (50) are connected with a plurality of connecting members (56) at predetermined intervals in the front-rear direction, and the outer circumference of the connecting members (56) is connected. A handle (57) was erected on the surface.
[Selection drawing] Fig. 7

Description

The present invention relates to a threshing drum of a combine harvester.

Conventionally, the threshing cylinder is formed by an impeller having a conveying spiral for conveying the grain culms and a rotor having threshing teeth for threshing the grain culms. Techniques for mounting on the rear plate and the rear plate of the rotor are known.

JP 2016-187327 A

However, in the technique of Patent Document 1, when a large amount of stalks are conveyed from the impeller to the rotor, there is a possibility that a large load is applied to the bar frame and the bar frame is deformed.

SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is to provide a threshing cylinder for a threshing apparatus that can suppress deformation of the bar frame by increasing the rigidity of the bar frame.

The present invention, which has solved the above problems, is as follows.
That is, according to the first aspect of the invention, a first support member (41) is provided at the front portion of a rotation shaft (30) extending in the front-rear direction, and a second support member (35) is provided at the rear portion of the rotation shaft (30). ) are provided on the rear surface of the first support member (41) and the front surface of the second support member (35) at positions spaced apart in the radial direction from the rotating shaft (30) by a predetermined distance in the circumferential direction. A plurality of bar frames (50) extending in the front-rear direction are installed at intervals, and the bar frames (50) adjacent to each other are connected at predetermined intervals in the front-rear direction by a plurality of connecting members (56). A threshing drum for a threshing apparatus characterized by connecting the two members together and erecting threshing teeth (57) on the outer peripheral surface of the connecting member (56).

According to a second aspect of the invention, the longitudinal intermediate portion of the bar frame (50) is supported by a third support member (33) provided in the longitudinal intermediate portion of the rotating shaft (30). 1. A threshing cylinder of the threshing apparatus described in 1 above.

In the third aspect of the invention, the connecting member (56) located on the downstream side in the rotational direction adjacent to the rotating shaft (30) in the axial view is replaced with the connecting member (56) located on the upstream side in the rotating direction. 3. A threshing cylinder for a threshing apparatus according to claim 1 or 2, wherein the threshing cylinder is provided behind the connecting member (56) at a predetermined distance in side view.

In the fourth aspect of the invention, the bar frame (50) and the connecting member (56) are connected via a stay (51) provided on the inner peripheral portion of the bar frame (50), and in a plan view, the A threshing cylinder for a threshing apparatus according to any one of claims 1 to 3, wherein the stay (51) is perpendicular to the bar frame (50) and extends in the circumferential direction.

According to the fifth aspect of the invention, the bar frame (50) and the connecting member (56) are connected via a stay (51) provided on the inner periphery of the bar frame (50), and in a plan view, the A threshing cylinder for a threshing apparatus according to any one of claims 1 to 3, wherein the lower hand portion of the stay (51) in the rotation direction is positioned behind the upper side and extends in the circumferential direction.

According to the sixth aspect of the invention, the handling tooth (57) is formed by the upper handling tooth (57A) located on the upper hand side in the rotation direction and the lower handling tooth (57B) located on the lower hand side, and in a side view, the A threshing cylinder for a threshing apparatus according to any one of claims 1 to 5, wherein the lower handling teeth (57B) are provided at a rear portion of the outer peripheral surface of the connecting member (56) from the upper handling teeth (57A).

According to the first aspect of the invention, the first support member (41) is provided at the front portion of the rotation shaft (30) extending in the longitudinal direction, and the second support member (35) is provided at the rear portion of the rotation shaft (30). are provided on the rear surface of the first support member (41) and the front surface of the second support member (35) at a predetermined distance in the radial direction from the rotation shaft (30) and at a predetermined distance in the circumferential direction. A plurality of bar frames (50) extending in the front-rear direction are constructed by using a plurality of bar frames (50) extending in the front-rear direction, and the bar frames (50) adjacent to each other are connected with a plurality of connection members (56) at predetermined intervals in the front-rear direction. Since the handle teeth (57) are erected on the outer peripheral surface of the member (56), the rigidity of the bar frame (50) is increased, and the load applied to the bar frame (50) during the threshing of the culms causes the bar frame (50) to move. deformation can be suppressed.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the longitudinally intermediate portion of the bar frame (50) is provided at the longitudinally intermediate portion of the rotating shaft (30). Since the bar frame (50) is supported by the third support member (33), deformation of the bar frame (50) can be further suppressed.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, when viewed from the axis of the rotating shaft (30), the connecting member located on the downstream side in the rotational direction adjacent in the circumferential direction (56) is provided rearward of the connecting member (56) located on the upper side in the rotational direction with a predetermined gap in side view, so that the culms conveyed to the threshing drum can be transferred to the threshing drum. It can be efficiently transported backward.

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, in addition to the effect of the invention of claim 3, the bar frame (50) and the connecting member (56) are connected via a stay (51) provided on the inner periphery of the bar frame (50), and in plan view, the stay (51) extends in the circumferential direction perpendicular to the bar frame (50). As a result, the rigidity of the bar frame (50) is increased, and deformation of the bar frame (50) due to the load applied to the bar frame (50) during threshing of the culms can be suppressed.

According to the invention of claim 5, in addition to the effects of the invention of any one of claims 1 to 3, the bar frame (50) and the connecting member (56) are arranged inside the bar frame (50). It is connected via a stay (51) provided in the peripheral part, and in plan view, the lower hand part of the stay (51) in the rotation direction is positioned behind the upper side and extended in the circumferential direction, so that the handling cylinder It is possible to efficiently convey the culms conveyed to the rear of the threshing drum.

According to the sixth aspect of the invention, in addition to the effect of the invention according to any one of the first to fifth aspects, the handle tooth (57) is located on the upper hand side in the rotation direction. and the lower handling tooth (57B) located on the lower hand side, and in a side view, the lower handling tooth (57B) is provided at the rear of the outer peripheral surface of the connecting member (56) rather than the upper handling tooth (57A), The culms conveyed to the threshing cylinder can be more efficiently conveyed to the rear of the threshing cylinder. In addition, it is possible to prevent the culm from entangling the upper handling teeth (57A) and the lower handling teeth (57B).

It is a front view of a combine. It is a left view of a combine. It is a top view of a combine. It is a vertical cross-sectional view of the front-back direction of a threshing device. Fig. 3 is a front perspective view of a handling cylinder; Fig. 2 is a rear perspective view of a handling cylinder; It is a left side view of a handling cylinder. (a) is a plan view and (b) is a front view for explaining the tooth handling unit. FIG. 10 is an explanatory view of fixing the treatment tooth unit to the bar frame; FIG. 4 is an explanatory diagram of the position of the tooth servicing unit, and a development view of the side surface of the shaving cylinder. FIG. 8A is a plan view of the bar frame for explaining the stay of the present embodiment, FIG. 4B is a stay of another embodiment, and FIG. Fig. 11 is a front perspective view of another handling cylinder; It is a left side view of another handling cylinder. FIG. 2 is a side development view of a servicing cylinder for explaining a servicing tooth unit in a first installation form; FIG. 10 is a development view of the side surface of the servicing cylinder for explaining the servicing tooth unit in the second installation form. FIG. 11 is a side development view of a servicing cylinder for explaining a servicing tooth unit in a third installation form; FIG. 11 is a side development view of a servicing cylinder for explaining a servicing tooth unit in a fourth installation form;

As shown in FIGS. 1 to 3, the general-purpose combine harvester is provided with a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface on the lower side of the body frame 1, and harvests grain stalks in the field on the front side of the body frame 1. A threshing device 4 for threshing and sorting the harvested culms is provided on the rear left side of the pre-harvesting processing device 3, and an operator rides on the rear right side of the pre-harvesting processing device 3. A control section 5 is provided for controlling.

An engine room 6 in which an engine is installed is provided on the lower side of the control unit 5, and a grain tank 7 for storing threshed and sorted grains is provided on the rear side of the control unit 5. A discharge auger 8 is provided for discharging grains to the outside.

The pre-harvesting treatment device 3 includes a conveying device 3A that raises the grain culm in the field and conveys it to the rear side, a cutting blade device 3B that cuts the base of the grain culm conveyed to the rear lower part of the conveying device 3A, It is composed of an auger device 3C that collects the grain culms conveyed to the rear side of the conveying device 3A to the left side, and a feeder house 3D that conveys the collected grain culms to the threshing device 4.

As shown in FIG. 4, the threshing device 4 comprises a threshing chamber 10 for threshing the culms and a sorting chamber 20 for sorting the threshed grains.

On the front and rear walls of the threshing chamber 10, threshing drums 11 for threshing the culms conveyed from the feeder house 3D are installed. A receiving net 12 is provided. The upper part of the handling cylinder 11 is covered with an openable and closable handling cylinder cover 13, and the inner periphery of the handling cylinder cover 13 is provided with a dust feed plate for guiding the culms to the rear part of the handling chamber 10. ing.

At the upper part of the sorting chamber 20, a rocking sorting device 21 for sorting the grains leaking from the handling chamber 10 is provided. Below the swing sorting device 21, in order from the front side, a winnow 25 for blowing sorting air to the swing sorting device 21, a wind splitter 26 for changing the blowing direction of the sorting wind behind the winnow 25, and swing sorting. The first spiral 27 conveys the grains leaking from the device 21 to the grain tank 7, and the grains with branch stems etc. A No. 2 helix 28 is provided for re-conveying to the sorting rack in front of the.

As shown in FIGS. 5 to 7, the handling barrel 11 includes a rotating shaft 30 rotatably mounted on the front and rear walls of the handling chamber 10, a truncated cone-shaped impeller 31 supported on the front part of the rotating shaft 30, It is formed from a rotor 32 provided on the rear side of the impeller 31 .

The impeller 31 includes a circular front plate 40, a circular rear plate 41 having a larger diameter than the front plate 40 (“first support member” in the claims), and outer peripheral portions of the front plate 40 and the rear plate 41. It is formed from connecting side plates 42 . In this embodiment, the front plate 40 and the rear plate 41 are formed in a circular shape, but they can also be formed in a hexagonal shape or the like.

A pair of upper and lower conveying spirals 43 for conveying the culm conveyed to the front portion of the impeller 31 to the rear portion of the impeller 31 is erected on the outer peripheral surface of the side plate 42 . As a result, the culms transferred to the impeller 31 can be efficiently transferred from the front to the rear of the impeller 31 and transferred to the rotor 32 .

A substantially triangular reinforcing rib 44 is provided on the front surface of the conveying spiral 43 to connect the side plate 42 and the lower front surface of the conveying spiral 43 at a predetermined angle in the circumferential direction. Thereby, the rigidity of the conveying spiral 43 can be increased, and deformation of the conveying spiral 43 due to the load applied to the conveying spiral 43 from the culms can be suppressed.

An intermediate plate (“third support member” in claims) 33 is provided at the intermediate portion of the rotary shaft 30 , and a rear plate (“second support member” in claims) 35 is provided at the rear portion of the rotary shaft 30 . ing. The intermediate plate 33 is provided upright on the outer peripheral surface of an intermediate support member 34 having a hexagonal vertical cross section in the left-right direction and provided at an intermediate portion in the front-rear direction of the rotating shaft 30 . Although the intermediate plate 33 and the rear plate 35 are formed in a circular shape in this embodiment, they can also be formed in a hexagonal shape or the like.

Six bar frames 50 extending in the front-rear direction are provided at predetermined intervals in the radial direction from the axis of the rotating shaft 30 and at intervals of 60 degrees in the circumferential direction. The front portion of the bar frame 50 is fixed to the rear surface of the rear plate 41 , the intermediate portion of the bar frame 50 is fixed to the outer peripheral surface of the intermediate support member 34 via the stay 36 , and the rear portion of the bar frame 50 is fixed to the front surface of the rear plate 35 . is fixed to

The bar frame 50 and the bar frame 50 adjacent thereto are connected by a bristle tooth unit 55 provided at a predetermined interval in the front-rear direction. As shown in FIG. 8, the cusp unit 55 includes a cusp support portion (a “connecting member” in the claims) 56 made of channel steel, and an outer peripheral surface and an inner peripheral surface of the cusp support portion 56. It is formed from two serrations 57 made of rolled round steel. An upper opening 56A is formed in the upper portion of the tooth support portion 56, and a lower opening 56B is formed in the lower portion thereof.

The bristle tooth unit 55 is fixed to the bar frame 50 with the opening of the bristle tooth supporting portion 56 positioned at the rear. As a result, the culms conveyed to the rotor 32 can be prevented from entangling with the cusp support portion 56 . Moreover, it is preferable that the bristle tooth supporting portion 56 of the bristle tooth unit 55 is provided inside the outer peripheral portion of the rear plate 41 of the impeller 31 when viewed from the axis of the rotating shaft 30 . As a result, the culms conveyed to the rotor 32 can be further suppressed from entangling the cusp support portion 56 .

The upper handling tooth 57A located on the upper side in the rotation direction is fixed to the front side of the handling tooth support portion 56 than the lower handling tooth 57B located on the lower side in the rotation direction. Further, the tip of the upper handling tooth 57A is positioned on the upper side in the rotation direction than the base, and the tip of the lower handling tooth 57B is positioned on the lower side in the rotation direction of the base. As a result, the threshing performance for threshing the grains of the culms conveyed to the rotor 32 and the feeding performance for conveying the culms to the rear of the rotor 32 can be enhanced.

As shown in FIG. 9 , the upper portion of the toothpaste support portion 56 of the toothpaste unit 55 is attached to the stay 51 extending from the bar frame 50 positioned on the upper side of the toothpaste unit 55 toward the rotation shaft 30 . It is detachably fixed by a fastening means such as a bolt inserted through the opening 56A, and the lower hand portion of the bristle tooth support portion 56 of the bristle tooth unit 55 extends from the bar frame 50 positioned on the downstream side of the bristle tooth unit 55 to the rotating shaft 30. It is detachably fixed to the stay 51 extending toward the lower opening 56B by fastening means such as a bolt that is inserted through the lower opening 56B. As a result, the bar frame 50 and the bar frame 50 adjacent thereto are connected by the custody unit 55, the rigidity of the bar frame 50 is increased, and the deformation of the bar frame 50 due to the impact generated during threshing is suppressed. can be done.

As shown in FIG. 10 , the tooth treatment unit 55 is provided at a predetermined interval in the front-rear direction, with the direction of rotation perpendicular to the bar frame 50 . In addition, the cusp tooth unit 55 positioned on the downstream side in the rotation direction is provided behind the adjacent cusp tooth unit 55 positioned on the upper side in the front-rear direction. As a result, the series of cusp units 55 are provided with a predetermined inclination from the upper side to the lower side in the rotational direction, so that the culms conveyed to the rotor 32 are efficiently conveyed to the rear of the rotor 32. can do. A plurality of bristle tooth units 55 provided between the bar frame 50 and the bar frame 50 adjacent thereto can be connected and integrated. Thereby, the tooth servicing unit 55 can be easily attached to the bar frame 50 .

<Stay>
As shown in FIG. 11( a ), the stays 51 of this embodiment are formed to extend in the circumferential direction orthogonal to the bar frame 50 at predetermined intervals in the front-rear direction. As a result, the longitudinal length of the custody unit 55 can be shortened, the rigidity of the bar frame 50 can be increased, and deformation of the bar frame 50 due to the impact generated during threshing can be suppressed.

As shown in FIG. 11(b), the stay 51 of the other embodiment is mounted on the bar frame 50 so that the upper portion of the stay 51 is located in front of the lower portion of the stay 51 at a predetermined distance in the front-rear direction. It is formed so as to extend in the circumferential direction with a predetermined inclination angle. As a result, the culms conveyed to the rotor 32 can be efficiently conveyed to the rear of the rotor 32 .

As shown in FIG. 11(c), the intermediate portion of the stay 51 of the other embodiment is formed to extend in a direction perpendicular to the bar frame 50 at a predetermined interval in the front-rear direction. The upper end and the lower end of 51 are formed to extend with a predetermined inclination angle with respect to the bar frame 50 . As a result, the custody unit 55 can be provided more inclined with respect to the bar frame 50, so that the culms conveyed to the rotor 32 can be conveyed to the rear of the rotor 32 more efficiently.

<Other handling drums>
12 and 13 illustrate a handling cylinder 11A of another embodiment. The same members as those of the handling cylinder 11 of this embodiment are denoted by the same reference numerals, and the description thereof is omitted.

The handling cylinder 11A includes a rotary shaft 30 rotatably mounted on the front and rear walls of the handling chamber 10, a truncated cone-shaped impeller 31 supported on the front part of the rotary shaft 30, and the impeller 31 provided behind the impeller 31. It is formed from a rotor 60 .

The rotor 60 is divided into two parts in the front-rear direction, and is composed of a rotor 60A provided on the rear side of the impeller 31 and a rotor 60B provided on the rear side of the rotor 60A. In addition, it can also be formed integrally without being divided into two parts in the front-rear direction.

The rotor 60A is provided between the rear plate 41 of the impeller 31 and the intermediate plate 33 provided in the intermediate portion of the rotating shaft 30, and the rotor 60B is provided between the intermediate plate 33 and the rear plate 35 of the rotating shaft 30. ing.

The rotor 60A includes six bar frames 61 extending in the front-rear direction, three front-rear frames 62 extending in the front-rear direction, and ring frames supported by the front-rear frames 62 at predetermined intervals in the front-rear direction. 63. In addition, on the outer peripheral portion of the ring frame 63, tooth treatment units 64 are erected toward the outer peripheral portion at predetermined intervals in the circumferential direction.

The rotor 60B includes six bar frames 61 extending in the front-rear direction, three front-rear frames 62 extending in the front-rear direction, and ring frames supported by the front-rear frames 62 at predetermined intervals in the front-rear direction. 63. In addition, on the outer peripheral portion of the ring frame 63, tooth treatment units 64 are erected toward the outer peripheral portion at predetermined intervals in the circumferential direction.

As shown in FIG. 14 , the cusp unit 64 is formed of a cusp support portion 65 made of flat steel and two cusps 66 made of round steel provided on the outer peripheral surface of the cusp support portion 65 . there is The treatment tooth units 64 in the first installation form are provided on the outer peripheral portion of the ring frame 63 at predetermined intervals in the circumferential direction. In addition, the bristle tooth unit 64 provided on the ring frame 63 adjacent to the rear side of the ring frame 63 is spaced apart from the bristle tooth unit 64 provided on the front ring frame 63 on the downstream side in the rotational direction by 1/2. placed in a staggered position. As a result, the series of cusp units 64 are provided with a predetermined inclination from the upper side to the lower side in the rotational direction, so that the culms conveyed to the rotor 60 are efficiently conveyed to the rear of the rotor 60. can do.

As shown in FIG. 15 , the cusp unit 64 in the second installation form rotates the cusp 66 on the rear side of the cusp 66 on the front side at a predetermined interval in the circumferential direction on the outer periphery of the ring frame 63 . It is provided so as to be located on the downstream side of the direction. Further, the bristle tooth unit 64 provided on the ring frame 63 adjacent to the rear side of the ring frame 63 is provided at the same position in the rotational direction. As a result, the threshing performance of threshing the grains of the culms conveyed to the rotor 60 is improved, and the entanglement of the culms with the cusps 66 can be suppressed.

As shown in FIG. 16, the third installation form of the cusp unit 64 rotates the cusp 66 on the rear side of the cusp 66 on the front side at a predetermined interval in the circumferential direction on the outer periphery of the ring frame 63. It is provided so as to be located on the downstream side of the direction. In addition, the bristle tooth unit 64 provided on the ring frame 63 adjacent to the rear side of the ring frame 63 is provided on the outer peripheral portion of the ring frame 63 at predetermined intervals in the circumferential direction. Furthermore, the bristle tooth unit 64 provided on the ring frame 63 adjacent to the rear side of the ring frame 63 is spaced from the bristle tooth unit 64 provided on the front ring frame 63 on the downstream side in the rotational direction by 1/2. placed in a staggered position. As a result, the culms conveyed to the rotor 60 can be efficiently conveyed to the rear of the rotor 60, and the threshing performance of threshing the grains of the culms can be improved.

As shown in FIG. 17, the cusp unit 64 in the fourth installation form is arranged on the outer peripheral portion of one to three ring frames 63 counted from the front side at a predetermined interval in the circumferential direction, from the cusp 66 on the front side. Also, the rear treatment tooth 66 is positioned on the downstream side in the rotational direction. Also, they are provided on the outer periphery of four or five ring frames 63 counted from the front side at predetermined intervals in the circumferential direction.

The bristle teeth unit 64 provided on one to three ring frames 63 counted from the front side is provided on the ring frame 63 adjacent to the rear side of the ring frame 63. It is provided at a position shifted by 1/2 space on the downstream side in the rotational direction with respect to the provided tooth treatment unit 64 . In addition, the bristle tooth units 64 provided on the four or five ring frames 63 counted from the front side, and the bristle tooth units 64 provided on the ring frame 63 adjacent to the rear side of the ring frame 63 are rotated in the same direction. placed in position. As a result, the culms conveyed to the rotor 60 can be efficiently conveyed to the rear of the rotor 60, and the threshing performance of threshing the grains of the culms can be improved. Furthermore, the work load of attaching the tooth custody unit 64 to the ring frame 63 can be reduced.

30 Rotating shaft 33 Intermediate plate (third support member)
35 rear plate (second support member)
41 rear plate (first support member)
50 bar frame 51 stay 56 tooth support (connecting member)
57 Handle tooth 57A Upper handle tooth 57B Lower handle tooth

Claims (6)

A first support member (41) is provided at the front of a rotation shaft (30) extending in the front-rear direction, and a second support member (35) is provided at the rear of the rotation shaft (30),
are provided on the rear surface of the first support member (41) and the front surface of the second support member (35) at a predetermined distance in the radial direction from the rotating shaft (30) and at a predetermined distance in the circumferential direction. constructing a plurality of bar frames (50) extending in the front-rear direction;
The bar frames (50) adjacent to each other are connected with a plurality of connecting members (56) at predetermined intervals in the longitudinal direction,
A threshing drum for a threshing apparatus, characterized in that threshing teeth (57) are erected on the outer peripheral surface of said connecting member (56). The threshing drum of the threshing apparatus according to claim 1, wherein the bar frame (50) has a longitudinally intermediate portion supported by a third supporting member (33) provided at a longitudinally intermediate portion of the rotating shaft (30). . When viewed from the center of the rotating shaft (30), the connecting member (56) positioned on the downstream side in the rotational direction adjacent to the circumferential direction is positioned more closely than the connecting member (56) positioned on the upstream side in the rotational direction. 3. The threshing drum of the threshing apparatus according to claim 1 or 2, wherein the threshing cylinder is provided at a rear side at a predetermined distance in side view. The bar frame (50) and the connecting member (56) are connected via a stay (51) provided on the inner periphery of the bar frame (50),
A threshing cylinder for a threshing apparatus according to any one of claims 1 to 3, wherein the stay (51) extends in the circumferential direction perpendicular to the bar frame (50) in plan view. The bar frame (50) and the connecting member (56) are connected via a stay (51) provided on the inner periphery of the bar frame (50),
The threshing cylinder of a threshing apparatus according to any one of claims 1 to 3, wherein the lower hand portion of the stay (51) in the rotational direction is positioned rearward of the upper side and extends in the circumferential direction in plan view. . The handling teeth (57) are formed by a superior handling tooth (57A) positioned on the upper side in the rotation direction and a lower handling tooth (57B) positioned on the lower side,
A threshing apparatus according to any one of claims 1 to 5, wherein the lower handling teeth (57B) are provided at a rear portion of the outer peripheral surface of the connecting member (56) relative to the upper handling teeth (57A) in side view. torso.

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