JPH0952A - Thresher of combine - Google Patents

Abstract

PURPOSE: To provide a thresher of a combine harvester, capable of simply changing the ratio of a threshing tooth attached to a threshing cylinder a cutting blade to easily and suitably alter the cut length and treated degree of discharged straws in response to the properties of crops. CONSTITUTION: In a combine harvester provided with a screw-shaped threshing cylinder having a spiral-shaped screw blade on the outer peripheral surface of the cylinder, a threshing tooth (51) is disposed on the outer peripheral surface. Therein, a threshing action part (51a) projected from the end edge of the screw blade toward the radius of the threshing cylinder is formed in a mountain shape on the view directed to the axis of the threshing cylinder. As for the mountain shape, the standing angles of the respective inclination end surfaces (51b), (51c) from the end edge of the screw blade are laterally asymmetric, and the inclination end surface (51c) small in the standing angle from the screw blade end edge is formed on the side of a cutting blade surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine threshing device for cutting grains such as rice, wheat and soybeans for threshing.

[0002]

2. Description of the Related Art In a combine threshing device equipped with a screw type handling cylinder, handle teeth are detachably attached to the spiral screw blades of the handling cylinder at equal intervals and at a predetermined section (normal handling) of the entire length of the handling cylinder. Conventionally, there has been a handle body structure in which a cutting blade for cutting straw is attached to a screw blade on the rear part of the body.

[0003]

In the conventional handle body structure, the number of handle teeth and the number of cutting blades are fixed,
There was a problem that it was not easy to change the cut length of straw and the degree of smoothness depending on the properties of the crop.

Therefore, according to the present invention, it is possible to easily change the ratio of the handling teeth and the cutting blades to be attached to the handling barrel so that the cutting length of straw and the smoothness of straw can be easily changed depending on the properties of the crop. The purpose is to

[0005]

The threshing device of the present invention for achieving the above object is a combine machine equipped with a screw-type handling cylinder having a spiral screw blade on the outer peripheral surface of the body, and the thresher from the edge of the screw blade. The tooth-operating portion that protrudes in the radial direction of the handle cylinder is formed in a mountain shape when viewed in the cylinder direction of the handle cylinder, and is formed in a left-right asymmetrical mountain shape in which the rising angles of the inclined end faces from the edge of the screw blade are different, and the screw blade is It is provided with handle teeth in which an inclined end face having a small rising angle from the edge is formed on the cutting edge face.

[0006]

[Operation] The handle tooth configured as described above functions as a normal handle tooth by attaching the inclined end surface of the handle tooth action portion having a large rising angle from the screw blade so as to face the rotation direction of the handle cylinder. Since the cutting blade face with a small rising angle from the screw blades of the handle tooth acting portion faces in the rotating direction of the handle cylinder by mounting the handle body upside down from that state, the handle tooth acts as a cutting blade. In this way, you can easily change the ratio between the handle teeth and the cutting edge simply by mounting the handle teeth upside down.
It is possible to easily and appropriately change the cutting length of straw and the degree of bending depending on the properties of the crop, and at the same time, it is possible to easily reduce the rotation torque of the handling cylinder.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view of mounting the handle teeth on the handle cylinder, FIG. 2 is a side view of the combine as a whole, and FIG. 3 is a plan view thereof (1) in which a traveling crawler (2) is mounted on a track frame (3). The machine stand, (4) is equipped with an axial flow screw type handling cylinder (5), a sorting mechanism (6), etc., and is mounted on the machine stand (1). 8) Grain tank for accumulating the grains of the threshing section (4) taken out through (8), (9) Mowing section installed in the lower front of the threshing section (4) so as to be able to move up and down via a hydraulic cylinder (10), (11) is a driving cabin provided with a driver's seat (12) and a driving operation unit (13) and is arranged in front of the grain tank (7), and (14) is provided behind the grain tank (7). An engine part in which an engine (15) is installed, and (16) is an upper grain carry-out for taking out grains in the grain tank (7). It is over moth.

The mowing section (9) is connected to a grain mowing header (17) for receiving the uncut grain culm and the rear center of the header (17) so that the mowing grain culm is threshing section (4). And a reed drive type cutting blade (20) and a grain tiller auger (21), which are constituted by a feeder house (18) for feeding to the grain header. In preparation for (17), the header (1
The cut culm to be taken into 7) is sent to the threshing unit (4) through the supply chain conveyor (22) provided in the feeder house (18) to perform the threshing process.

A second reducing cylinder (23) is provided on the outer right side of the threshing section (4) so that the second processed product is returned to the sorting mechanism (6) for re-sorting. .

Further, as shown in FIG. 1, the screw type handling cylinder (5) comprises a cylindrical body (24) having a length substantially equal to the longitudinal length of the threshing section (4) and an outer periphery of the body (24). A spiral screw blade (25) on which the toothing to be described later according to the present invention is mounted, and a dust projection (26) provided on the outer periphery of the rear end of the body (24). To have
The screw-type handling cylinder (5) is axially supported in the machine longitudinal direction, and the front end of the handling cylinder (5) is exposed to the inlet (28) on the front side of the handling chamber (27) communicating with the feeder house (18). The dust outlet (29) is provided so that the rear end of the handle barrel (5) faces the dust outlet (29) on the rear side of the dust chamber (27).
The receiving net (30) is stretched under the handling cylinder (5) except for the above, and all the cut culms are put into the feeder house (18) for threshing.

Further, front and rear swing sorting discs (31) (32) constituting the sorting mechanism (6) are provided, and the swing sorting discs (33) (34) and the arm (35) are provided in the front-back direction. A feed pan (36) which is driven to swing the front and rear sorting discs (31) (32) and is positioned below the front part of the handling cylinder (5), and a first chaff sheave (37) whose grain leakage amount is adjustable. , A gren sieve (38) provided below the chaff sheave (37) is provided on the front sorting board (31), and a second chaff sheave (39) connected to the rear side of the chaff sheave (37) and the first and second streams. Plate (40) (4
1) and 1) are provided on the rear swing sorting disc (32).

The first and second air passages (42) are provided below the first chaff sheave (37) and the Glen sheave (38).
Kara Minoh fan (44) that supplies selection wind through (43)
And the first gutter (45) and the first conveyor (4) that receive the grain from the grain sieve (38) and send it to the fried cylinder (8).
6), the second gutter (47) and the second conveyor (48) for sending the reduced products from the second flow grain board (41) to the second reduction cylinder (23), and the rear end of the chaff sheave (39). And a third mouth (49) to face it so that the grain of the first gutter (45) is delivered to the tank (7) and the reduced product of the second gutter (47) is delivered to the feed pan (36). are doing.

Thus, the screw blade (2) of the handling cylinder (5)
The plate-shaped first to third handle teeth (50) (51) (52) having a predetermined wall thickness to be attached to FIG.
Will be described in detail below with reference to.

First to third handle teeth (50) (51) (5)
2) is a non-conveying surface () of the blade (25) that faces the inlet (28) side in a pair of inner and outer handle tooth mounting holes (53) provided at equal intervals in the circumferential direction of the blade (25). In the state where the upper part projects outward from the edge of the blade (25) on the (front face) side,
Two socket head bolts (54) and this bolt (54)
It is detachably fixed by a single plate nut (55) having two screw holes (not shown) for screwing. Inside and outside 2 of each set of blades (25) into which bolts (54) are inserted
The individual mounting holes (53) are arranged on the diameter (radius, diameter) line of the handling barrel (5) passing through the center of the handling barrel shaft (56), and each of the first to third handling teeth (50) (51) ( 52) is provided with a pair of mounting holes 57, which are the first to third handle teeth 50.
(51) and (52) are arranged on the left and right center lines.

The first handle tooth (50) shown in FIGS. 6 to 9 and the second handle tooth (51) shown in FIGS. 10 to 13 are formed in substantially the same shape, and when attached to the blade (25), The upper portions of the first and second handle teeth (50) (51) protruding from the edge are formed in a mountain shape. In addition, the first facing in the circumferential direction of the handling cylinder (5)
And the chevron-shaped upper portion of the second handle tooth (50), that is, the action portion (50
a) (51a) one side inclined end face (50b) (51b)
The rising angle (θ1) from the edge of the blade (25) of
The rising angle (θ2) from the edge of the blade (25) of the inclined end faces (50c) (51c) on the other side becomes small (θ1> θ2).
The action parts (50a) and (51a) are formed,
First and second handling teeth (50) (51) facing the insertion opening (28) side when the tilted end faces (50b) (51b) with a tilt angle (θ1) face the direction of rotation (R) of the handling barrel (5). Is the surface (50d) (51d), and the inclined end faces (50c) (51c) having the inclination angle (θ2) are the rotation directions (R) of the handling cylinder (5).
The surfaces of the first and second handle teeth (50) (51) facing the insertion opening (28) side when facing toward the rear surface are the back surfaces (50e) (51e), and the tilted end surfaces (50b) (51b) with the tilt angle (θ1).
Both end edges of the front surface (50d) (50d) and the back surface (50d)
e) (51e) is joined with an arc (50f) (51f), and the inclination angle (θ2) of the first and second handling teeth (50)
Both end edges of the inclined end faces (50c) (51c) of the
d) (51d) and the back surface (50e) (51e) are joined at an angle, and the first and second handling teeth (51) projecting from this edge at least when attached to the blade (25).
The action portions (51a) and (52a) of (52) are formed asymmetrically. The threshing performance can be changed by attaching the first handle teeth (50) upside down. That is, threshing performance is maximized by handling the grain culm at the sloped end face (50b) with a steep rising angle (large handling cylinder driving torque), and normal threshing is handled by handling with the sloped end face (50c) with a gentle rising angle. Threshing performance is obtained. (Handling cylinder drive torque is suitable)

The first handle tooth (50) and the second handle tooth (51) are
The tilted end face (50) of the tilt angle (θ2) of the first handle tooth (50)
Similarly to the inclined end surface (50b) having the inclination angle (θ1), c) is formed as a flat surface perpendicular to the rotation direction (R) of the handling cylinder (5), and the inclined end surface (50c) has the inclination angle (θ2). While the both edges are joined at a right angle to the front surface (50a) and the back surface (50e), the inclination angle (θ
The inclined end surface (51c) of 2) is not a flat surface perpendicular to the rotation direction (R) of the handling cylinder (5) like the inclined end surface (51b) of the inclination angle (θ1), but the inclined end surface of the inclination angle (θ2). (5
The joint angle with the surface (51d) of 1c) is smaller than a right angle,
They are different in that they are formed on the cutting edge surface (51g) such that the joining angle with the back surface (51e) is larger than a right angle. That is, the second handling tooth (51) can be switched between the handling tooth / cutting edge by mounting the second handling tooth (51) upside down. Further, when the second handle tooth (51) is used as a cutting blade, the cutting edge of the cutting surface (51g) is flush with the front surface of the blade (25), and straw is caught between the blade (25). It is effective because no gap is formed.

The third portion shown in FIG. 1 and FIGS.
The handle teeth (52) have the same action as the first and second handle teeth (50) (51) used as handle teeth, whether the handle teeth (52) are attached to the blade (25) upside down or upside down. As shown in FIG.
a) is formed vertically symmetrically on the upper and lower parts.

Further, as shown in FIGS. 1 and 14 to 16, a reinforcing plate (6) having an L-shaped cross section for reinforcing the blade (25).
0) is provided. The reinforcing plate (60) is provided on the front surface of the blade (25) at regular intervals in the circumferential direction at a position deviated from the mounting position of the first to third handle teeth (50) (51) (52). One side surface (60a) of the (60) is the body portion (24).
The outer side surface (60b) rises in the radial direction from the outer peripheral surface of the body portion (24), and one end surface of the reinforcing plate (60) facing the side opposite to the charging port (28) is joined to the outer peripheral surface of the blade (25). The reinforcing plate (60) is arranged so as to be joined to the blade, and the blade (25) and one end surface of the reinforcing plate (60) contacting the blade are fixed by welding, and the body (24) and the body (24) )
The side surface (60a) of the reinforcing plate (60) that is in contact with the blade (25) is fixed by welding to increase the welding surface diameter of the blade (25) to the body (24), and the reinforcing plate (60) in front of the blade (25). Enlarge the joint surface between the body and the body (24), and
By the feeding operation of the grain culm of 5), the blade (25) to the body (2
4) The force received by the body 4 is dispersed and received by the body portion 24, and the force for pushing the handling body 5 toward the insertion port 28 is reduced and deformation of the body portion 24 is prevented. are doing.

As shown in FIGS. 1 and 14, for example, the blades (25) in the section A of the handle cylinder (5) have the first handle teeth (50) with a steep rising angle in the handle cylinder rotation direction (R). Inclined end face (50
b) so that the blades (25) in the section B are provided with the second handle teeth (51) so that the inclined end face (51b) having a steep rising angle in the handle barrel rotation direction (R) faces C. A third handle tooth (52) is attached to the blade (25) of the section, and a second handle tooth (51) is attached to the blade (25) of the section D.
Since the cutting edge surface (51c) having a gentle rising angle is directed to
While the cut culm supplied to the front part is sent to the rear by the feeding action of the screw blades (25) of the handling cylinder (5) and discharged from the dust outlet (29) at the rear end of the handling chamber (23). In addition, it is treated by the first to third handling teeth (50) (51) (52) attached to the blades (25) in the sections A, B and C of the handling cylinder (5) and is subjected to shedding action. The shredded straw that has reached the rear end portion of the handling cylinder (5) is the cutting edge surface (5) of the second handling tooth (51) attached to the blade (25) in the section D of the handling cylinder (5).
After being subjected to a cutting action by 1c) and finely cut, it is discharged from the dust outlet (29).

Here, when the cut length of the straw is long, the slackness is poor, or when the drive torque of the handling cylinder (5) is desired to be reduced, as shown in FIG. 15, the handling cylinder (5) is used. By installing the first and second handle teeth (50) (51) of the A and B sections upside down, the inclined end surface (50c) of the handle tooth (50) having a gentle rising angle is provided in the section A. In the B section, the cutting edge surface (51g) having a gentle rising angle is oriented in the rotation direction (R) and in the B section in the same manner as the handling tooth (51) in the D section. The cutting length can be shortened, the smoothness is improved, and the driving torque of the handling cylinder (5) is reduced.

Although a typical embodiment of the present invention has been described above, the present invention does not specify the arrangement and number of the first and second handle teeth with respect to the handle cylinder, and the function as a combine.
Any structure may be used as long as it is capable of threshing by rotation of the screw type handling cylinder having the first or second handling teeth attached thereto. In addition, it goes without saying that the present invention can be appropriately modified and implemented without departing from the spirit thereof.

[0022]

As is apparent from the above embodiments, according to the present invention, the spiral screw blade (25) is provided on the outer peripheral surface of the body (24).
In a combine provided with a screw-type handle cylinder (5) having a screw-handle handle (5), a tooth-operating portion (51a) protruding from the screw blade end edge in the handle-body radial direction is formed in a mountain shape when viewed from the handle-body axial direction, and the screw blade is also formed. Each inclined end face from the edge (51
b) A handle tooth (51) in which an inclined end face (51c) having a small rising angle from a screw blade edge is formed on a cutting edge face (51g), which is formed in a left-right asymmetrical mountain shape having different rising angles of (51c). Is provided, and the tooth-acting part (51
By attaching the inclined end face (51b) having a large rising angle from the screw blade (25) of (a) so as to face the rotation direction of the handling cylinder (5), it works as a normal handling tooth (51) and is turned over from that state. The cutting edge surface (51) having a small rising angle from the screw blade (25) of the handle tooth action portion (51a) in the rotating direction of the handle cylinder (5)
Since g) faces, the handle tooth (51) acts as a cutting edge. In this way, the ratio between the handle teeth and the cutting edge can be easily changed by simply installing the handle teeth (51) upside down, and the cutting length of straw and the degree of smoothness can be easily changed according to the properties of the crop. At the same time, the rotation torque of the handling cylinder (5) can be easily reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of attaching a handle tooth to a handle cylinder.

FIG. 2 is a side view of the entire combine.

FIG. 3 is a plan view of the entire combine.

FIG. 4 is a sectional side view of a threshing unit.

FIG. 5 is a sectional front view of a threshing unit.

FIG. 6 is a front view of the first handle tooth.

FIG. 7 is a plan view of a first handle tooth.

FIG. 8 is a rear view of the first handle tooth.

9 is a plan view of FIG.

FIG. 10 is a front view of a second handle tooth.

FIG. 11 is a plan view of a second handle tooth.

FIG. 12 is a rear view of the second handling tooth.

13 is a plan view of FIG.

FIG. 14 is a partial front view showing a mounting state of the handle teeth on the handle cylinder.

FIG. 15 is a partial front view showing a mounting state of the handle teeth on the handle cylinder.

FIG. 16 is a partially enlarged cross-sectional side view of the handling cylinder.

[Explanation of symbols]

 (5) Handle barrel (51) Second handle tooth

Claims (1)

[Claims] 1. In a combine having a screw type handling cylinder having a spiral screw blade on the outer peripheral surface of the body section, a handling tooth acting portion projecting in a radial direction of the handling cylinder from an end edge of the screw blade is viewed in the handling cylinder axial direction. In addition to being formed in a mountain shape, it is formed in a bilateral asymmetrical mountain shape in which the rising angle of each inclined end surface from the screw blade edge is different, and the inclined end surface with a small rising angle from the screw blade edge is formed on the cutting edge surface. A combine threshing device characterized by having teeth.