JPS6225003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a threshing device that threshes grain while moving it within a handling chamber using spiral handling teeth.

As is well known, in crops such as rice and wheat, the grains are concentrated and attached to the tips of the ears, so in threshing equipment such as power threshing machines and automatic threshing machines, only the tips of the ears can be threshed. It is common to feed grain into a handling room and thresh it. However, in crops such as soybeans, buckwheat, and rapeseed, the position of the pods (grains) attached to the stem culm is not constant, and even in the same crop, the position of the pods attached is different up and down. Moisture content, ripeness, etc. differ depending on the attachment position, such as the top or bottom, so if you use the same threshing equipment for rice and wheat as is, the threshing process will take longer and there will be more threshing loss. It was not practical.

On the other hand, threshers and ordinary combine harvesters are well known, which supply the grain to be threshed along with the stalk culms into a handling chamber for threshing. and heavy,
There were problems such as a relatively large amount of threshing loss.

Therefore, the applicant first constructed a handling cylinder by winding spiral handling teeth around the outer periphery, provided a receiving net around this handling cylinder with a threshing gap between the spiral handling teeth, and This is a so-called full-volume threshing operation in which the grain to be threshed is moved in the axial direction of the handling chamber along a spiral groove formed by the spiral handling teeth and the peripheral surface of the handling chamber including the receiving net by rotating the drum. We are proposing a new type of threshing device that makes this possible. In this threshing device, depending on the type of grain to be threshed, the drying condition (moisture content), the degree of ripeness, etc., the grain may be discharged outside together with the threshed culm before sufficient threshing is performed. Ta.

The present invention has been made in view of the above circumstances, and further improves the new type of threshing device described above.
In a threshing device having a handling cylinder configured by winding spiral handling teeth around the outer periphery, the handling cylinder includes a part outside the outer periphery of the spiral handling teeth that transports the threshed grain in the axial direction of the handling cylinder while threshing. Radial handling teeth that protrude and spread and beat the grain to be threshed are provided, and a receiving net is stretched around the handling drum with a threshing gap between the spiral handling teeth and the radial handling teeth to form a handling chamber. A threshed grain supply port is provided at one end of the handling chamber in the axial direction, and the entire amount of the supplied threshed grain is moved to the other end of the handling chamber by the rotation of the handling cylinder, and threshed, and the threshed grains are removed. is caused to leak downward from the receiving net, the other end side of the handling chamber is opened, and a handling cylinder is made to protrude outward from the end of the receiving net at the open end side of the handling chamber, and a spiral handling gear is formed inside the handling chamber. By configuring the structure so that the threshing culm moved by the radial handling teeth is discharged to the outside from the open end of the handling chamber, threshing, transport, spreading, and
The synergistic effect of beating etc. can greatly improve threshing performance, and it also eliminates clogging of the receiving net and reliably separates the threshed grain from the threshed culm, making it possible to thresh not only rice and wheat, but all the grain to be threshed. To provide a threshing device capable of threshing with less loss.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a cylindrical handling chamber provided in the horizontal direction, and a receiving net 2 is stretched over approximately the lower half of the circumferential surface of the chamber. One end of the handling chamber 1 (the left end in the drawing) is closed, and the other end is open. A supply hopper 3 as a threshing grain supply port is provided at the top of the one end (closed side), and the other end is open. The sides are covered with an upper cover 4. In such a handling chamber 1, a handling cylinder 5 is installed so as to rotate in the direction of the arrow by pivoting on a handling cylinder shaft 5a, and the open end of the handling chamber 1 is connected to the receiving net 2 end of the handling chamber 1. It protrudes slightly outward from the tip. On the outer circumferential surface of this handling cylinder 5, handling teeth 6 made of a spiral body are wound and attached at a predetermined pitch with a predetermined gap from the receiving net 2, and the handling teeth 6 are located between the pitches of the handling teeth 6. Separate rod-shaped radial handling teeth 7 are provided that protrude in the radial direction from the handling cylinder 5. The radial handling tooth 7 is not limited to a bar shape, but may be a conventionally known chevron-shaped handling tooth such as a wire rod or a plate.

The protruding ends of the radial handling teeth 7 are designed to slightly protrude outward from the outer periphery of the spiral handling teeth 6, and the number of these teeth installed is approximately several in the entire handling cylinder. The arrangement and mounting location may be changed as appropriate.

The protrusion height of the spiral handling teeth 6, the radial handling teeth 7, the pitch of the handling teeth 6, the rotational speed of the handling cylinder 5, etc. may be adjusted as appropriate depending on the type, ripeness, moisture content, etc. of the grains to be threshed A. The mesh of the receiving net 2 may also be changed. Furthermore, although not shown, the handling room 1
A sorting room is provided below.

In the threshing device having such a configuration, the handling cylinder 5
is rotated at a predetermined number of rotations in the direction of the arrow, and the entire amount of grain A to be removed, such as soybeans, buckwheat, and rapeseed, is input from the supply hopper 3 and fed into the handling chamber 1.
The grains to be threshed A follow the spiral groove formed between the spiral handling teeth 6 and the inner circumferential surface of the handling chamber 1 including the receiving net 2.
While being sent in the axial direction of the handling chamber 1, the grain is threshed by the threshing action, particularly due to contact friction with the receiving net 2. During the feeding and threshing of the threshed grains A, the radial handling teeth 7 feed the threshed grains A while stirring and promote the threshing action with a beating action, thereby further improving the threshing efficiency. Eliminates clogging and improves leakage during threshing. Threshed grains B, such as threshed grains, leak through the receiving net 2 and are brought to the sorting room, and the threshed culms, stems and leaves A, are discharged from the open end of the handling room 1 to the outside of the handling room. Ru.

In this case, if the grain to be threshed A is dry and has good shedding properties, most of it will be threshed at a location close to the supply hopper 3, but if the grains to be threshed A have poor shedding properties, a spiral will be placed on the open end side of the handling chamber 1. While being transferred by the handling teeth 6, the grain is continuously subjected to threshing action while being stirred by the spiral handling teeth 6 and the radial handling teeth 7, resulting in extremely high threshing efficiency and almost no threshing loss. In particular, when the radial handling teeth 7 are provided, the threshed grain A is spread and beaten, improving the threshing performance and eliminating clogging of the receiving net 2, compared to the case where only the spiral handling teeth 6 are provided. Threshing time is shortened, and the handling chamber 1, handling cylinder 5, etc. can be shortened. It goes without saying that the threshing device of the above embodiment can also thresh rice and wheat in the same way.

As explained above, according to the threshing device of the present invention, since the spiral handling teeth and the radial handling teeth protruding outward from the outer periphery of the spiral handling teeth are provided on the outer periphery in the handling chamber in which the receiving net is stretched, Compared to a device with only spiral handling teeth, the spreading and beating action of the threshed grains is better, eliminating clogging of the receiving net, extremely high threshing efficiency and threshing accuracy, and improving the efficiency of threshing in the handling room, handling drum, receiving net, etc. The length can be shortened and downsizing becomes possible. In addition, although so-called full-volume threshing work is possible, the power required for threshing is much less than that of conventional threshers or the threshing section of ordinary combine harvesters, and it can be manufactured in a small size, light weight, and at low cost. Furthermore, since the handling cylinder protrudes outward from the end of the receiving net in the handling room, the threshing culms are reliably discharged to the outside of the handling room, and no clogging occurs.

[Brief explanation of the drawing]

The drawing is a schematic side view showing an embodiment of the present invention. 1...handling room, 2...receiving net, 3...supply hopper,
4... Upper cover, 5... Handling cylinder, 6... Spiral handling teeth, 7... Radial handling teeth, A... Grain to be shelved, B...
Threshing of grains, etc., a... Threshing culm (stem culm/stem leaves).

Claims (1)

[Scope of Claims] 1. A threshing device having a handling cylinder configured by winding spiral handling teeth around the outer periphery, the handling cylinder having a spiral handling mechanism that transports the threshed grain in the axial direction of the handling cylinder while threshing the grain. Radial handling teeth are provided that protrude outward from the outer periphery of the teeth to spread and beat the threshed grain, and a receiving net is placed around the handling barrel with a threshing gap between the spiral handling teeth and the radial handling teeth. A grain supply port is provided at one end in the axial direction of the handling chamber, and the entire amount of the supplied grain is threshed while being moved to the other end of the handling chamber by rotation of the handling drum. Then, the threshed grains are allowed to leak downward from the receiving net, and the other end of the handling chamber is opened, and a handling barrel is projected outward from the end of the receiving net at the open end of this handling chamber. The threshing device is characterized in that the threshing culm, which is moved within the handling chamber by the spiral handling teeth and the radial handling teeth, is discharged to the outside from the open end of the handling chamber.