JPH01281009A - Structure of sorting section of thresher - Google Patents

Abstract

PURPOSE:To improve the threshing and selection efficiency by arranging a stationary chaff sieve and a mobile chaff sieve constituting a chaff sieve in specific respective state. CONSTITUTION:A chaff sieve 11 is composed of a stationary chaff sieve 11a positioned at the feeding end in the transfer direction of a treating object and above a grain sieve 12 and a mobile chaff sieve 11b positioned at the delivery end in the transfer direction and above a recovery part 9 for the secondary product. The chaff sieve 11 is constructed of a number of chaff lip plates 20 parallelly arranged along the side wall of a selection case 13 in a state inclined backward. The mobile chaff sieve 11b is made to be vertically tiltable around its rear end and to be freely switchable between a state to connect the feeding end in the transfer direction with the delivery end of the stationary chaff sieve 11a and a state to separate the feeding end from the delivery end of a grain sieve 12 with a prescribed gap and to incline the mobile chaff sieve forward.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided with a swinging sorting device that sorts the leaked material while swinging it under the handling chamber, and in this swinging sorting device,
A chaff sieve for rough sorting of waste material and a grain sieve for sorting grains are installed below the chaff sieve, and a first and second collection section for collecting grains are installed below the oscillating sorting device. The present invention relates to the structure of the sorting section of the installed thresher.

[Conventional technology]

In the conventional sorting section structure, there is one in which the mesh size of the chaff sieve can be adjusted by adjusting the inclination angle of the chaff flip plate on the terminal end side of the chaff sieve in the transport direction of the processed material.

[Problem to be solved by the invention]

The above-mentioned conventional structure was designed to allow the chaff flip plate to be used for threshing rice and for threshing wheat, soybeans, etc. by adjusting the inclination angle of the chaff plate. In other words, when threshing rice plants whose stem culms are flexible and less likely to produce cut straw, by increasing the opening of the lip plate, the culms that tend to get tangled can be transported, and the time spent loosening them can be increased. , to make it easier for grains inserted between the straws to leak out, and to reduce the opening degree of the lip plate in the case of wheat whose stem culm is relatively hard and easily breaks, resulting in a lot of cut straw. This structure is designed to prevent cut straw from falling onto the collection section below as much as possible.

However, with this structure in which the opening degree of the chaflip plate is adjusted, for example, if the rear slope of the entire chaff sheave is set to a gentle angle, the opening of the chaflip plate will be made smaller, making it difficult for cut wheat straw to fall. Although it is possible to thresh wheat by smoothly transferring the grain, even in the case of rice, the processed material is easily transferred by shaking, making it difficult to collect and fall the grains sufficiently. There is a problem. In addition, if the rear uphill opening of the entire chaff sieve is set tightly, it takes time to oscillate the material to be processed, which improves the recovery efficiency of rice grains, but in the case of wheat, the oscillating transfer time takes longer. Because it is long, the cut straw tends to fall downward,
There are problems such as a large amount of cut straw falling onto the second material collecting section, which increases the load unnecessarily, and it is difficult to obtain the desired performance by setting the rear upward slope angle of the entire chaff sheave. Ta.

The present invention aims to solve the above-mentioned problems and improve threshing sorting efficiency.

[Means to solve the problem]

A feature of the present invention is that, in the sorting section structure of the threshing device having the above configuration, the chaff sheave is divided into a fixed chaff sheave located on the starting end side in the transfer direction and facing above the grain sheave, and a fixed chaff sheave located on the terminal end side and facing the second chaff sheave. a movable chaff sheave facing above the recovery part, the movable chaff sheave having its starting end connected to the terminal end of the fixed chaff sheave, and the starting end facing the terminal end of the grain sheave;
In addition, the tilting position can be freely switched between a rearward and upwardly inclined position, and its functions and effects are as follows.

[For production]

That is, when threshing rice, by setting the movable chaff sheave in an inclined position facing the grain sheave, the processed material is oscillated and transferred over the fixed chaff sheave.
It falls from the terminal end to the starting end of the movable chaff sheave,
It is oscillated and transferred in an upwardly inclined direction on a movable chaff sheave.

At this time, the tangled straw debris is loosened by the impact of the fall, and since it is in an uphill position, it takes time to transfer.
Sufficient loosening and sorting action is performed, and the cut paddy is sorted out. Moreover, the straw waste on the grain sieve is transferred to the movable chaff sieve, which prevents it from falling directly above the second plum orchard.

When threshing wheat, the movable chaff sieve is set to be connected to the fixed chaff sieve, so that the waste material can be continuously and smoothly oscillated through the upper parts of the fixed chaff sieve and the movable chaff sieve. This allows the cut straw to be discharged to the rear while preventing it from falling onto the second material collecting section.

〔Effect of the invention〕

Therefore, according to the present invention, it is possible to improve the efficiency of sorting processed materials in threshing work by changing the sorting function depending on crops with different properties, and to prevent the occurrence of husks loss and an increase in the load on the second harvesting device. It is now possible to prevent this from happening.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

The drawing shows a threshing device (
1) is shown. In this threshing device (1), all the culms of the reaped husks are transferred from the pre-reaping processing section (not shown) at the front of the machine to the handling chamber (
2) A handling cylinder (3) that is inserted into the front end and has a rotation axis along the longitudinal direction of the aircraft in the handling room (2);
It is configured as an axial flow type in which the material to be processed is handled while being transported rearward in cooperation with a receiving net (4) stretched downward.

The processed material leaking from the receiving net (4) is then sorted into grains, paddy with branches, waste straw waste, etc. in a lower sorting section (5).

To be more specific, the sorting section (5) includes a swinging sorting device (6) that sorts the processed material while swinging it, a sorting fan (7) that blows away fine straw waste, and a device that collects grains. Second item collection section (8) and second item storage section (9) that collects second item items.
), the oscillating sorting device (6) consists of a wave-shaped grain pan (10) on the front side, a chaff sieve (11) for coarse sorting connected to it, and a chaff sieve (11) for rough sorting below the chaff sieve (11). The grain sheaves (12) are each installed on a swinging sorting case (13) which is a frame body, and are configured to swing back and forth as one body. In other words, the swinging sorting case (
The rear lower part of the swing arm (13) is pivoted to the fuselage.
), and the tip of a rod (16) that is pushed and pulled back and forth by a crank mechanism (15) is pivotally connected to the swinging end of the swinging arm. It is configured to swing back and forth around the pivot point (P) of (14) in a forward and rearward upward tilting state. Further, a roller (17) is attached to the front end side of the swinging sorting case (13), and a guide rail (18) that engages with the roller (17) and supports and guides it in the front-rear and rear-upward slope directions is fixed. It is a provision.

The swing arm (14) is linked with a spring (19) that tensions and biases the swing arm (14) rearward and upward.

This spring (19) acts to reduce the additional load due to the own weight of the case (13) when the swinging sorting case (13) moves forward and downward, and when it moves backward and upward. It is configured to assist the swing drive and suppress vibrations caused by torque fluctuations.

a fixed chaff sieve (11a) located on the starting end side in the transfer direction of the processed material and facing above the grain sieve (12); A movable chaff sheave (11b
). This chaff sieve (11) separates a large number of chaff sieves (20) into a sorting case (13).
They are arranged in parallel in a rearwardly inclined state over the side wall of the main body.

The movable chaff sheave (11b) is configured to be tiltable up and down with its rear end as a fulcrum, and the starting end in the transfer direction is connected to the terminal end of the fixed chaff sheave (Ila), and the starting end is connected to the grain sheave (12). ), facing the terminal end at a predetermined interval, and can be freely switched and fixed to an upwardly inclined position.

With this configuration, when threshing rice, for example, the movable chaff sheave (11b) is set to the rear upward tilting position, and entangled long straw etc. are removed from the fixed chaff sheave (11a) to the movable chaff sheave (11b). ), and is transported over the movable chaff sieve (11b) which is in an upward position. This improves grain leakage efficiency.Moreover, small ears of waste straw transferred on the grain sieve (12) fall onto the second storeroom (9) from the predetermined interval, making it easier to compare. Long straws are transferred to the movable chaff sieve (11b) and discharged to the rear, thereby preventing the long straws from entering the second storeroom (9).

When threshing wheat, the movable chaff sieve (1
1b) so as to be connected to the fixed chaff sheave (11a) and in a slightly backward downward position, the planar opening of the chaff flip plate (20) is made small, and the cut straw is placed in the second storeroom (11a). 9) It quickly discharges the liquid backwards while preventing a large amount from falling upward. At this time, the stalks and culms of the wheat are hard and do not get tangled easily, so there is not much loss due to cutting.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional side view showing an embodiment of the structure of the sorting section of the threshing device according to the present invention. (2)... Handling room, (6)... Rocking sorting device, (8)...-Fragrance recovery section, (9)...
...Second item collection section, (11)... Chaff sieve, (11a)... Fixed chaff sieve, (11
b>...Movable chaff sheave, (12)...
...Glenshive.

Claims (1)

[Claims] A swinging sorting device (6) is installed below the handling room (2) to sort the waste while swinging it, and this swinging sorting device (
6), a chaff sieve (1
1) and a grain sieve (12) for sorting grains below the chaff sieve (11), and a first grain collecting section (8) and a second grain sieve for collecting grains below the swing sorting device (6). A sorting section structure of a threshing device in which a material recovery section (9) is provided, in which the chaff sheave (11) is provided with a fixed chaff sheave (11a) located on the starting end side in the transfer direction and facing above the grain sheave (12). and a movable chaff sheave (11b) located on the terminal end side and facing above the second item collecting section (9), and the movable chaff sheave (11b)
, the starting end is connected to the terminal end of the fixed chaff sheave (11a), and the starting end is connected to the grain sheave (11a).
12) A structure of a sorting part of a thresher which is configured to face the terminal end and to be able to freely change its tilting position between an upwardly inclined position and a rearwardly upwardly inclined position.