JPH0750912Y2 - Straw spreader in combine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a straw diffusing device in a combine that diffuses and discharges the straw cut in the straw cutting device in an arbitrary direction.

[Conventional technology]

Conventionally, as a combine straw spreading device, a pair of left and right spirals are axially supported in series below the straw cutter in line with the axis center of the spiral cutter, and both spirals can be independently rotationally driven in both forward and reverse directions. For example, rotate both spirals in the forward or reverse direction to release the straw widely in the cut or uncut area, and rotate one of the spirals in the forward direction and the other in the reverse direction to remove the straw. It is known to centrally release the straw in the central part and, conversely, rotate one in the reverse direction and rotate the other in the forward direction to release the straw into both the cut and uncut areas.

[Problems to be solved by the device]

In the above-mentioned conventional straw diffusing device, the axes of the two spiral bodies are arranged in series with their axes aligned, and both shafts are separately driven to rotate. An intermediate bearing which enables relative rotation of the shafts and supports both discontinuous shafts in series is required. This intermediate bearing is fixed to the frame of the straw diffusing device by a bracket in order to secure the rigidity of both spiral shafts, but since the bracket is in the dropping path of the straw, the straw is caught on the bracket, May cause clogging, or the brackets may be misaligned, causing the axes of both helices to bend, causing the bearings to wear and making noise.If the brackets are discontinued, the axes of both helices will be made extremely sturdy. However, there is a problem in that the weight and cost are increased.

The present invention has been made in view of the above problems, and has been made to solve the problem.It is possible to eliminate a bracket that obstructs a falling path of a straw with a very simple structure, and further, to prevent the both spiral members from falling. It is an object of the present invention to provide a straw diffusing device in a combine in which the rigidity of the shaft and the linearity of the shaft center are secured.

[Means for Solving the Problems]

In order to achieve the above object, the present invention supports a pair of left and right spirals below the straw cutting device in series with their axes aligned, and both spirals can be separately driven to rotate in both forward and reverse directions. In the straw diffusing device in the combine, the shafts of the both spirals are constituted by hollow shafts, a fixed shaft is provided below the straw cutting device, and the hollow shafts of both spirals are inserted in series through the fixed shaft. The present invention is characterized by a straw diffusing device in a combine, which is rotatably supported and is capable of rotating and driving the both spiral bodies independently in both forward and reverse directions.

[Action]

According to the present invention, each shaft of a pair of left and right spirals is formed by a hollow shaft, and the hollow shafts of both spirals are inserted in series to a fixed shaft provided below the straw cutting device so as to be rotatably supported. ,
The shafts of both spirals are integrated with the fixed shaft to ensure rigidity, and linearity is automatically added.Therefore, a bracket that supports the shafts of both spirals in the middle is unnecessary, and the bracket of the straw is not attached. Problems such as catching and clogging are eliminated, and inconveniences such that the axes of both spirals are curved due to a mounting error of the bracket and the bearings are worn or noise is generated are improved.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 is a longitudinal sectional view of a main part of a straw diffusing device according to the present invention,
FIG. 2 is a side sectional view of the straw portion at the rear part of the combine, and FIG. 3 is a rear view of the straw portion.

In the figure, 1 is a straw conveying unit, 2 is a straw cutting device provided below the end of the straw conveying unit 1, and 3 is a straw cutting device 2.
With the straw diffusing device provided below, the threshed grain culms are conveyed to the end portion of the straw rail 5 by the straw chain 4 of the straw conveying unit 1 and supplied to the straw cutting device 2 and scraped. The straw cut by the cutter 6 including the blade 6a and the cutting blade 6b falls on the straw diffusing device 3 below. In the figure, 7 is a switching plate, and 8 is an opening / closing cover. When the switching plate 7 is opened, the straw is supplied to the straw cutting device 2, and when this is closed and the opening / closing cover 8 is opened, the straw is discharged to the straw cutting device 2. It is released to the outside as it is without going to.

The straw diffusing device 3 includes the side plates 9 of the frame of the device 3,
Both ends of a fixed shaft 11 are fixed to brackets 10 and 10 'attached to 9', and spiral plates 13, 13 'are attached to the fixed shaft 11 and hollow shafts 12, 12'.
A pair of left and right spirals 14,14 'with two attached hollow shafts 12,1
2 ′ are inserted in series with the inner ends of both hollows close to each other, and both hollow shafts 12,
Both ends of 12 'are supported by a fixed shaft 11 via bearings 15, 15, 15', 15 '. Then, by driving driven pulleys 16 and 16 'fixedly provided on the outer ends of the hollow shafts 12 and 12' in arbitrary directions, the spiral bodies 14 and 14 'are separately moved on the fixed shaft 11. It is designed to rotate in the opposite direction. In the figure, 17 is interposed between the inner ends of the hollow shafts 12 and 12 'facing each other,
Collars that prevent direct contact between the ends of both hollow shafts 12 and 12 ', and 18,18,18', 18 'are conical plates fixed to both ends of the left and right spiral plates 13,13', respectively. It is intended to prevent the straw from being entangled between the inner ends of the left and right spiral plates 13 and 13 'which are independently rotated and between the outer ends and both side plates 9 and 9'of the frame.

Incidentally, the advance directions of the pitches of both spiral plates 13 and 13 'may be the same or opposite directions, but in the present embodiment, the advance directions of the pitches of both spiral plates 13 and 13' are set to the same direction. Is set.

Driven pulleys at the outer ends of the hollow shafts 12 and 12 'of both spiral bodies 14 and 14'
16, 16 'are drive pulleys 2 at both ends of the cutting blade shaft 19 of the cutter 6.
0,20 'and belts 21,21' are connected to each other, and belt 2
1,21 'drive pulley 20,20' and driven pulley 16,16 '
The left and right spirals 14 and 14 'can be rotated in the same direction or in the opposite direction to the cutting blade shaft 19 by respectively flat-spreading or straddling them. 22 in the figure is the cutting blade axis
19 driven pulleys, 23 combine threshing and sorting section, 24
Is a traveling crawler.

4 to 7 are explanatory views of various operation modes of the straw diffusing device 2, in which the rotation directions of the left and right spiral bodies 14 and 14 'are the same as the rotation direction of the cutting blade shaft 19 of the cutter 6. Is the normal rotation, and when both spirals 14, 14 'are in the normal rotation, the spiral plates 13, 1'
The 3'advancing directions are set so that they are both on the right side of the machine to the cut area A side, and the drive pulleys 20, 2 on both ends of the cutting blade shaft 19 are set.
0'and driven pulleys 16,1 on both outer ends of both spirals 14,14 '
If the belts 21 and 21 'are laid flat on both sides of 6', the left and right spirals 14 and 14 'will both rotate forward, and the straws will be widely spread in the direction of the already-cut area A as shown by the arrow in the figure (fourth). Figure).

Next, belt on the drive pulley 20 and driven pulley 16 on the left side.
If the belt 21 'is hung on the driving pulley 20' on the right side and the driven pulley 16 'on the right side,
14 rotates in the forward direction and the spiral 14 'on the right side rotates in the reverse direction, and the straw is concentrated on the central portion C as indicated by the arrow in the figure (fifth point).
Figure).

In addition, the left and right drive pulleys 20, 20 'and driven pulley 1
When both belts 21 and 21 'are hung on 6,16', the left and right spiral bodies 14 and 14 'both rotate in reverse, and the straw is widely spread in the uncut area B direction as shown by the arrow in the figure.

Further, if the belt 21 is laid on the driving pulley 20 and the driven pulley 16 on the left side and the belt 21 'is flatly laid on the driving pulley 20' and the driven pulley 16 'on the right side, the spiral body 14 on the left side rotates in the reverse direction and the right side is rotated. The spiral body 14 'of C becomes a normal rotation, and the cut straw is scattered both on the side of the already cut ground A and the side of the uncut land B (No. 7).
Figure).

That is, this straw diffusing device 2 is used for wide spraying in the direction of the cut area A during general work, when collecting straw with a baler or the like in post-work, or during central work, concentrated spraying in the central part C direction, wind. When it is affected by, or when it is prevented from scattering to the adjacent land, it is spread widely in the uncut area B direction. When it is a short culm and there is little spread on the uncut area B side, the already cut area A, uncut area B. It is possible to easily select and implement a desired spraying mode by switching the left and right belts 21 and 21 ', such as spraying in both directions.

[Effect of device]

In summary, the present invention is a combiner in which a pair of left and right spiral bodies are axially supported in series below the straw cutting device so that their axial centers coincide with each other, and both spiral bodies can be separately rotationally driven in both forward and reverse directions. In the straw diffusing device, the shafts of the both spiral bodies are hollow shafts, and a fixed shaft is provided below the straw cutting device, and the hollow shafts of the both spirals are inserted in series to the fixed shaft so as to be rotatably supported. At the same time, since the both spirals can be separately driven to rotate in both forward and reverse directions, the shafts of both spirals are integrated with the fixed shaft to ensure rigidity and automatically impart linearity. A bracket that supports the shafts of both spirals in the middle is not necessary, obstacles such as hooking of straw to the bracket, clogging, etc. are eliminated, and the axis lines of both spirals are curved due to bracket mounting error, and the bearing is worn, noise Disadvantages or issues are improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part of a straw diffusing device according to the present invention, FIG. 2 is a side sectional view of a straw part at the rear of a combine, and FIG. The rear view of the straw portion and FIGS. 4 to 7 are explanatory views of various operation modes of the present straw diffusing device. 2 ... Straw cutting device, 3 ... Straw spreading device, 11 ... Fixed shaft,
12, 12 '... Hollow shaft, 13, 13' ... Helical plate, 14, 14 '... Helical body, 16, 16' ... Driven pulley, 20, 20 '... Driving pulley, 21, 21' ... Belt.

Claims (1)

[Scope of utility model registration request] 1. A combine cutting device in which a pair of left and right spirals are axially aligned in series below a straw cutting device so that both spirals can be independently driven to rotate in both forward and reverse directions. In the straw diffusing device, the shafts of the both spirals are formed as hollow shafts, and a fixed shaft is provided below the straw cutting device, and the hollow shafts of both spirals are inserted in series to the fixed shaft so as to be rotatably supported. The straw diffusing device in a combine, wherein the both spirals can be separately driven to rotate in both forward and reverse directions.