JPH05227826A - Feed chain for threshing - Google Patents

Abstract

PURPOSE:To smoothly carry out the transfer and feed of grain culms to a threshing chamber by installing a feed chain and a front feed chain along a grain culm transfer port of the threshing chamber. CONSTITUTION:The terminal end of a front feed chain 3 and the starting end of a feed chain 2 are installed on the inside and outside in a parallel state and a series of nipping and pressing rods 4 are provided along nipping and transfer surfaces of both the feed chains 3 and 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing feed chain and can be used as a combine harvester.

[0002]

2. Description of the Related Art An independent front feed chain is provided in front of the feed chain of a threshing device to change the transfer speed of the rice culms to supply the culm to the threshing chamber. In the mode of carrying out, there is a defect that the transfer of the grain culm from the front feed chain to the feed chain is not performed smoothly, the supply of the grain culm is disturbed, and the grain culm is easily wound. The present invention has a simple structure to smoothly inherit the supplied grain culms.

[0003]

According to the present invention, a front which feeds grain culms to a feed chain 2 is fed to a starting end of a feed chain 2 which clamps and transfers the root side of a grain culm supplied into a threshing chamber 1. The feed chain 3 is provided in parallel, and a series of threshing rods for sandwiching and guiding the grain culms from the front feed chain 3 to the feed chain 2 are provided.

[0004]

[Advantageous Effects and Effects of the Invention] The front feed chain 3 and the feed chain 2 are respectively driven so that the stock root side of the cutting transfer grain stem is sandwiched between the front feed chain 3 and the feed rod 4. The grain culms that are sandwiched between the feed rod 4 and the pinching rod 4 are transferred, and the terminal end portion of the front feed chain 3 is inherited by the starting end portion of the feed chain 2. At this time, the sandwiching rod 4 is sandwiched and guided by a series of sandwiching edges. When passed to this feed chain 2, the tip of the grain culm is supplied into the threshing chamber 1 and threshed.

In this way, the front feed chain 3
Is independent of the feed chain 2 and the transfer and feed rate to the threshing chamber 1 can be fixed separately from the feed chain 2 to make the feeding posture of the grain stems suitable for threshing. In the inheritance part of the transfer supply from the front feed chain 3 to the feed chain 2, since the sandwiching rod 4 is provided between both chains 3 and 2, the sandwich transport state on the grain culm root side is provided. Therefore, the feeding posture of the grain culms determined between the feed chains 3 and 2 is not easily changed, and the grain culms are smoothly fed to the threshing chamber 1.

[0006]

1 to 11, a combine threshing device is mounted on a chassis and receives grain culms to be mowed by a reaping device in front of it for threshing. A feed chain 2 is provided along the outside of the transfer port 7 to be transferred on the stock root side of the grain culm on one side so that the handle barrel shaft 6 of the handle barrel 5 is arranged in the front-rear direction of the threshing chamber 1 and the chassis. , The front feed chain 3, the pinching rod 4 and the like are provided. The feed chain 2 is provided over the length of the handling cylinder 5, while the front feed chain 3 is provided with a grain culm supply funnel 9 provided in front of the grain culm feed port 8 on the front side of the threshing chamber 1. It is provided along the outer side, and transfers the grain culm of the reaping device in front of which the plant base of the harvested grain culm is transferred.

In the threshing chamber 1, a threshing net 10 is stretched on the lower side, and a swinging selection shelf 11 is provided on this side to swing and transfer the threshing grains dropped or dropped from the threshing chamber 1. While selecting. No. 12 is Kara Minoh, which sorts out this selection. On the upper side of the threshing chamber 1, there is provided a threshing cover 14 which can be opened upward by pivoting around a hinge 13 on the back side, and a downward pressure is exerted by a spring 15 along a front side transfer port of the threshing cover 14. The holding rod 4 having the bifurcated holding edges 16 and 17 is attached. Therefore, this sandwiching rod 4 is provided with a threshing cover 14
Along with that, it can rise to the upper open position. Further, the sandwiching rod 4 is in a state of extending from the supply port 8 onto the front feed chain 3 portion in front, and the inside slidable edge 16 is pressed against the upper surface of the front feed chain 3, The flared edge 17 protruding forward from the rotation facing surface of the feed chain 2 is located on the stock root side of the front feed chain 3 and guides the stock root from the upper side.

The feed chain 2 is stretched around the threshing side wall 18 below the front end of the transfer port 7 with sprockets 19 and 20. The front feed chain 3 is parallel to the feed chain 2 and
Is eccentrically stretched inside and is stretched between a sprocket 22 which is rotatable coaxially with the sprocket 19 and a sprocket 23 and the like in front of the sprocket 19, and the feed chain 2 and transmission rotation are independent. To do it.

The sandwiching rod 4 has an inner sandwiching edge 16 opposed to the upper side of the front feed chain 3 and an outer sandwiching edge 17 opposed to the upper side of the feed chain 2 so that each grain culm. It is configured to be transferred while sandwiching the root part of the plant, and transferred from the front feed chain 3 to the feed chain 2 while inheriting the culm. In addition, this sandwiching rod 4 is
As shown in the figure, it may be formed in a mere gate shape in cross section, or as shown in FIG. 3, one side of the clamping bar 16 may be attached to the side surface of the main body of the clamping bar 4.

With regard to the transmission structure of these feed chains 2 and 3, the handling cylinder system in which the shaft 24 rotated from the engine E is transmitted through the handling barrel shaft 6 and the culm chain 25, and the Karako 1
2, a swing-selection shelf 11, a suction dust collector 26, and the like, a feed chain system that is transmitted to the sprocket 20 of the feed chain 2, and a belt-shaped continuously variable transmission 27.
8 and the cutting and conveying system that is transmitted to the front feed chain 3 and the like. Therefore, the speed of the feed chain 2 of the feed chain system and the speed of the front feed chain 3 of the cutting and conveying system can be set independently, and the speed ratio can also be changed by the continuously variable transmission 27. The continuously variable transmission 27 can change the transmission ratio with respect to the transmission from the engine E to the traveling device 35 driven.

The reaping device 28 uses the cutting blade device 30 to mow the grain culm which is guided by the grain culm raising device 29, and the collecting device 3
6. The structure is such that the grain culm transfer device 31 transfers it upward and backward, and the culm transfer device 31 feeds it from the terminal end to the front feed chain 3 to inherit it. At this time, the tip of the grain culm is placed on the supply funnel 9. In addition, 32 is a pilot's seat, 32 is a gren tank for accommodating threshed rice, and 34 is a culm cutter, which receives culms discharged from the culm chain 25 and performs a short cutting process.

The grain culm sent from the grain culm transfer device 31 to the front feed chain 3 during the cutting operation is sandwiched between the grain rod 4 and the sandwich rod 4, and the root side is inherited by the starting end of the feed chain 2. .. At this time, the pinching position of the grain culvert is the pinching edge 16
It changes from 17 to 17, but the spring 15 so that it is sandwiched between both feed chains 3 and 2 at this inheritance part with the same sandwiching rod 4.
Even if the feed chain 3 is clamped by the feed chains 3 and 2 at different speeds, the transfer can be carried out smoothly and accurately.
Further, since the starting end of the front feed chain 3 is located closer to the tip end side of the supply port 8 than the starting end of the feed chain 2, the feeding of the tip end into the threshing chamber 1 is good and the tip end delay occurs. hard.

Regarding the shift control of the continuously variable transmission 27, a culm length sensor 37 for detecting the culm length of the harvested grain culm in the reaping device 28 and a vehicle speed sensor 38 for detecting the vehicle speed which is the transmission speed of the traveling device 35 are used. The continuously variable transmission 27 is shift-controlled by the output from the controller CPU having a microcomputer to control the mowing speed mode A at the time of short culm, the mowing speed mode B at the time of long culm, and automatic switching. It is a configuration that can be controlled by. The vehicle speed V is
The cutting speed U is the traveling speed, and the cutting speed U is the rotational speed of the input transmission to the cutting device 28, the front feed chain 3 or the like or the cutting transmission speed. Generally, the cutting speed U increases as the vehicle speed V increases. Although constructed, in the present invention, the relationship between the vehicle speed V and the cutting speed U is switched between the time of mowing a short culm and the time of mowing a long culm.
That is, as shown in the figure, when the culm is short, the vehicle speed V and the mowing speed U are set to a linear mowing speed mode A, which is almost proportional to each other. As the maximum vehicle speed max, a curved cutting speed mode B is set so that the cutting speed mode A coincides with the cutting speed mode A at the time of short culm, and the cutting operation is performed smoothly. Each such mowing speed mode A,
B is registered in the memory of the controller CPU,
Depending on the culm length detected by the culm length sensor 37, the cutting speed mode A or B is switched to be selected.

In FIGS. 12 to 15, the transmission transmission system from the engine E to the traveling device 35 is shown in FIG.
It is composed of a hydraulic continuously variable transmission HST that can perform a gear shift operation with 0 operation, a mission 39, etc. that incorporates a transmission mechanism such as an auxiliary transmission and a steering clutch from the hydraulic continuously variable transmission HST.
A vehicle speed sensor 38 is provided so as to detect the vehicle speed V by obtaining the number of rotations from a transmission shaft of a part of the mission 39.
The cutting speed U is detected by a cutting rotation sensor 41 from a part of the cutting transmission system of the cutting device 28. Further, the continuously variable transmission 27 is shifted by the motor M rotated by the output from the controller CPU, and the rotation diameter of the split pulley for belt shifting is changed. The shift position of the split pulley rotated by the motor M is detected by the potentiometer 42 and feedback-controlled.

Reference numeral 43 is a lodging switch, which is switched depending on the lodging degree of the grain culm. Reference numeral 44 is a shift position sensor for detecting the shift position, which is composed of a potentiometer,
Is a reaping clutch switch, which is configured to be able to turn on and off the reaping clutch 47 by outputting a motor by turning on and off by operating the clutch lever 46. With this, the reaper 28
The transmission between the front feed chain 3 and the front feed chain 3 is switched on and off.

The continuously variable transmission 27 is provided on the output side of the hydraulic continuously variable transmission HST so as to branch and transmit to the mission 39 side. The hydraulic continuously variable transmission HST is transmitted from the engine E by the belt 61, and then the traveling device 35 is transmitted through the mission 39, and the belt continuously variable transmission 27, the clutch belt 63, and the transmission are transmitted through the gears of the transmission case 62. The front feed chain 3 is transmitted via gears in the case 64. Further, the gears in the transmission case 64 are interlocked with the respective parts of the cutting device 28 via the belt 65. The transmission case 64, together with the feed chain system shaft 24, a bracket 66 provided on the front surface of the thresher frame.
The front feed chain 3 is stretched on a guide member 67 mounted on the bracket 66 and supported by the bracket 66.

Further, the sprocket 19 of the feed chain 2 and the sprocket 22 of the front feed chain 3 are separately rotatably supported at positions displaced in the front-rear direction so that the parallel running distance between the feed chains 3 and 2 is increased. It is set. Figure 1
6, the grain tank auger 48 for taking out the paddy stored in the grain tank 33 to the outside of the grain tank 33 is provided on the rear side of the grain tank 33. The transfer of the paddy to the grain dumping auger 48 is smoothly carried out. Let it be done. At the bottom of the Glen tank 33,
An auger shaft 49 is provided in the front-rear direction, and a spacer case 51 is interposed at the end of a gutter 50 inside the auger shaft 49 to connect the lower end of the grain-removing auger 48 in the vertical direction. A takeover auger shaft 53 is borne so as to interlock with the lower end of the auger shaft 52 of the grain auger 48 in a direction orthogonal to each other, and the takeover auger shaft 53 and the auger shaft 49 can be interlocked by a pin 54 engagement. By driving the shaft 49 side, it is interlocked with the auger shaft 52 side.

A conical shape is formed at the tip of the auger shaft 49 so that the auger shaft 53 can be fitted with the recess 55 on the side of the auger shaft 53 to be re-centered. It is a structure that can be interlocked by engaging with the engaging recessed portion 56 formed on the end face of the. This auger shaft 5
3, the engagement recess 56 is formed so that its diameter is larger than that of the auger shaft 49, and the auger shaft 53 is provided at the tip of the auger shaft 49.
A conical guide surface 57 having a diameter gradually increasing toward the side is formed to facilitate the transfer of particles in the spacer case 51. Reference numeral 58 denotes an auger case, which connects the intersection of the spacer case 51 and the grain auger 48. This auger case 5
The cross shafts 59 and 60 are interlocked with each other by a bevel gear, and the cross shaft 59 is connected to the takeover auger shaft 53, and the cross shaft 60 is connected to the auger shaft 52.

[Brief description of drawings]

 The figures show an embodiment of the invention.

FIG. 1 is a perspective view of a part of a threshing device.

FIG. 2 is a front sectional view of a part thereof.

FIG. 3 is a front sectional view showing another embodiment thereof.

FIG. 4 is a plan view of a part of the threshing device.

FIG. 5 is a front sectional view thereof.

FIG. 6 is a plan view of the combine.

FIG. 7 is a transmission mechanism diagram thereof.

FIG. 8 is a side view of a part of the combine.

FIG. 9 is a partial operation mechanism diagram and a schematic diagram of a transmission system.

FIG. 10 is a partial control block diagram.

FIG. 11 is a control graph of the cutting speed mode.

FIG. 12 is a plan view showing another embodiment of the transmission mechanism.

FIG. 13 is a perspective view thereof.

FIG. 14 is a side view of the combine.

FIG. 15 is a plan view thereof.

FIG. 16 is a side sectional view of a grain tank grain auger portion.

[Explanation of symbols]

 1 Threshing room 2 Feed chain 3 Front feed chain 4 Sandwich rod

Claims (1)

[Claims] 1. A front feed chain 3 for feeding grain culms to the feed chain 2 is made parallel to a starting end portion of a feed chain 2 which holds and transports the grain basin side of the grain culm supplied into the threshing chamber 1. A threshing feed chain provided with a series of sandwiching rods for sandwiching and guiding a grain culm from the front feed chain 3 to the feed chain 2.