JPH07115839A - Thresher - Google Patents

Abstract

PURPOSE:To provide a thresher designed to improve its sorting ability and capable of suppressing the rise in the internal pressure of a threshing chamber through a simple modification making use of a scheme for improving the sorting ability. CONSTITUTION:A blower 15 is provided to give sorting air flow into the space between a receiving net 17 arranged under a threshing chamber 13 and the swing sorting case 18 in a sorting section 10, and the air suction channel of this blower 15 is connected to the inlet of the threshing chamber 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device for combine harvesters, which is characterized by a wind sorting structure of a sorting section.

[0002]

2. Description of the Related Art In general, a sorting section of a threshing device mounted on a combine, a threshing processed material in a handling room leaks through a receiving net and is supplied to a swinging sorting case below, so that the swinging sorting case is shaken. It is structured to release grain and debris to the outside of the machine by sieving into grain (No. 1) and No. 2 by a sieving and sieving process by wind and a sieving process using a sieving wind from Karano. Various improvements have been made to the rocking sorting case itself in order to increase the ability or adjust the sorting ability.

[0003]

However, when a large amount of the processed material is leaked and fed from the receiving net onto the rocking sorting case, adjustment is made so as to promote the feeding of the processed material in order to avoid retention. However, the sorting accuracy tends to decrease. Further, generally, the internal pressure of the handling chamber is increased by the wind generated by the rotation of the handling barrel, and the threshed material and dust are easily blown out from the grain culm supply port.

The present invention has been made by paying attention to such an actual situation, and it is possible to improve the selection ability, and at the same time, the simple modification of the structure for the purpose makes the treatment room It is an object of the present invention to provide a threshing device capable of suppressing an increase in internal pressure.

[0005]

The characteristic configuration of the present invention is to provide a blower for sending the selected wind between the receiving net disposed in the lower part of the handling room and the swinging selection case in the selection section, and to introduce the intake air of the blower. The road is connected to the entrance side of the handling room.

[0006]

According to the above construction, the threshing material that leaks through the net and falls on the rocking sorting case receives the sorting wind from the blower, and relatively light straws and dust in the material are swing-sorted. The air is blown to the rear of the selection unit without falling onto the case, and the rise in internal pressure on the inlet side of the handling chamber is suppressed by the suction operation of the blower.

[0007]

As a result, the sorting ability of the sorting unit is improved, and the threshing-processed material and dust can be sufficiently suppressed from being blown from the handling port, which is excellent in improving the working environment and improving the grain collection efficiency. Moreover, it has become possible to provide a much superior threshing device that is easy to modify and advantageous in terms of production.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a reaper 2 is connected to a front portion of a traveling vehicle equipped with a crawler type traveling device 1 by a hydraulic cylinder 3 swinging around a support shaft 4 so that it can be raised and lowered. , The threshing device 7 is mounted on the traveling vehicle body, and
A planting grain culm raising device 5, a cutting blade 6, and a conveying device 8 for feeding the cut grain culm to a feed chain 9 of the threshing device 7 are provided in the grain tank 11 for storing the first product collected by the threshing device 7.
Is placed on the side of the threshing device 7, and the Glen tank 11
The boarding operation unit 12 is arranged in front of the vehicle to construct a self-removing combine.

The threshing device 7 is constructed as shown in FIG. That is, the handling barrel 14 is rotatably supported in the handling chamber 13 about the longitudinal axis of the machine body, the receiving net 17 is provided between the handling chamber 13 and the sorting section 10, and the handling chamber is provided behind the receiving net 17. A dust blow port 16 from 13 is formed, and a cross-flow type blower 15 for sending the sorting air between the receiving net 17 and the sorting unit 10 is provided below the grain culm supply port 13a in the handling chamber 13, and Blower 15
The intake passage 15a is connected to the inlet side of the handling chamber 13.

The sorting section 10 is provided with a rocking sorting case 18, a wind picking sardine 19, a No. 1 recovery screw conveyor 22, a No. 2 recovery screw conveyor 23, and an exhaust fan 24.
The processed products which are dropped and supplied from the handling chamber 13 by the blower 15 are subjected to sieving and wind selecting processes while being oscillatingly transferred in the oscillating selection case 18, and the grains are fed from the No. 1 object recovery screw conveyor 22 to the grain Screw conveyor 2 for collecting the second product in tank 11 that has not been adequately sorted
3 to the front of the swing selection case 18.

In the rocking sorting case 18, there are a rough sorting chaff sheave 28 connected to the rear side of the front grain pan 21, a fine sorting grain sheave 29 located below the rough sheave sheave 28, and a grain pan 30 for receiving a processed product from the dust delivery port 16. Strawack 3
1. Straw rack 32 for discharging straw is provided. Then, as shown in FIG. 3, the chaff plate 28a of the chaff sheave 28 is attached by the interlocking member 28b so that the inclination angle can be freely changed around the support shaft 28c, and the Glen pan 30 and the Straw rack 31 for receiving the processed matter from the dust delivery port 16 are provided. Spindle 3
The swing angle of the chaff plate 28a and the Glen pan 30 and the Straw rack 3 are set by the operation unit 34 that uses an actuator such as an electric motor so that it can swing up and down.
The vertical angle of 1 is adjustable. That is, when there are few sorted products, the chaff plate 28
The inclination angle of a is decreased and the vertical angles of the Glen pan 30 and the Straw rack 31 are increased to perform the sorting process with high accuracy. On the contrary, when there are many items to be sorted, the inclination angle of the chaff plate 28a is increased and the Glen pan 30 and The vertical angle of the Straw rack 31 is made small to speed up the discharge of straw waste.

[Other Embodiments] The blower 15 may be of the same lateral suction type as the Kara 19. Also, the blower 1
The intake passage 15a of No. 5 may be provided with a net or the like at the connecting portion to the handling chamber 13 to prevent the grains from being unduly sucked into the blower 15 and damaged.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Overall side view of combine

[Fig. 2] Vertical side view of the threshing device

FIG. 3 is an enlarged side view showing a part of a sorting unit.

[Explanation of symbols]

 10 sorting section 13 handling room 15 blower 15a intake path 17 receiving net 18 swing sorting case

Claims (1)

[Claims] 1. A receiving net (1) provided at a lower portion of a handling room (13).
7) and rocking sorting case (18) in sorting section (10)
A thresher which is provided with a blower (15) for sending the selected wind, and an intake passage (15a) of the blower (15) is connected to the inlet side of the handling chamber (13).