JPH08228580A - Grain discharging auger for combine harvester - Google Patents

Abstract

PURPOSE: To provide a grain discharging auger for a combine harvester excellent in conveyability by fitting and inserting plural helical bosses around a helical shaft having square shaft cross section, rotating and driving the helical bosses, fitting and inserting an shaft cylinder into oppositely installed helixes between the helical bosses so as to enable the free expansion and contraction and capable of smoothly expanding and contracting the helixes by a simple constitution. CONSTITUTION: This grain discharging auger for a combine harvester is obtained by fitting and inserting plural helical bosses 2. having a constant length, a helix 1 on one end side and a small-diameter shaft cylinder 5 on the other end around a helical shaft 4 having a square shaft cross section, rotating and driving the helical bosses, fitting and inserting the shaft cylinder 5 into the oppositely installed helixes 1 between the respective bosses 2 so as to enable the free expansion and contraction. Furthermore, the dustproof seal 27 having a diameter capable of fitting and sliding on the inner peripheral surface of a helical cylinder 25 is preferably fixed and installed on the outer peripheral part of the shaft cylinder 5 and a stopper ring 28 having a somewhat smaller diameter than that of the dustproof seal 27 is preferably provided at the tip thereof. Notched parts 29 are preferably formed in the stopper ring 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain harvesting auger for combine harvesters, which is for taking out and transporting harvested grains stored in a grain tank to the outside of the machine.

[0002]

There is a mode in which a part of the helix is polymerized to expand and contract the grain auger of the combine (Japanese Patent Laid-Open No. 63-279719, Japanese Utility Model Publication No. 1).
No. 121340, etc.), since the spiral double polymerizes in such a structure, a special spiral structure is required, and driving force during expansion and contraction is large, and smooth expansion and contraction operation is difficult to be performed.

[0003]

According to the present invention, a spiral boss 2 having a constant length, which has a spiral 1 on one end side and a shaft cylinder 5 having a small diameter on the other end side, is provided with a spiral shaft having an angular cross section. A plurality of grains are fitted around the boss 4 to be rotationally driven, and the barrel cylinders 5 are stretchably fitted between the spiral bosses 2 so as to be expandable and contractable between the spiral bosses 2.

[0004]

When the grain-removing auger is expanded or contracted, the cylindrical body for mounting the spiral boss 2 and the spiral shaft 4 are both expanded and contracted in the axial direction, so that the spiral bosses of the spiral shaft 4 can be expanded and contracted. It can be expanded or contracted between two to adjust the length or change the storage length. Whether the interval between the spiral bosses 2 is long or short, the grain transfer can be performed by rotating the spiral shaft 4.

As described above, since the spiral bosses 2 mounted on the spiral shaft 4 are expanded and contracted by fitting with the spiral 1 part and the shaft cylinder 5 part, the intervals between the spiral bosses 2 are expanded and contracted. The shaft 4 and the spiral boss 2 can be expanded and contracted smoothly and quickly, the configuration is simplified, and the configuration can be inexpensive. Moreover, the expansion and contraction between the spiral bosses 2 is such that the shaft cylinder 5 part having a small diameter is fitted into the inner peripheral part of the spiral part 1 to expand and contract, and the internal spiral shaft 4 is not exposed. It is less likely that dust will be clogged between the spiral boss 2 and each spiral boss 2, and the expansion and contraction action can be smoothly performed.

[0006]

EXAMPLE A combine is a chassis 6 having a crawler 47.
By the mowing device 7 for cutting and transporting the grain culms on the top, the threshing device 8 for threshing by receiving the transported grain stalks, the Glen tank 9 for accommodating the threshed grains, and the bottom auger 10 at the bottom of the Glen tank 9. A vertical auger 11 for transferring the grains discharged backward is provided, and a grain auger 12 which is connected to the upper end thereof and can be transferred horizontally is provided. 13 is a cockpit.

The vertical auger 11 is rotatable, and the grain auger 1 is rotated.
The horizontal position of 2 can be determined, and the grain auger 12 can be vertically angled by the telescopic cylinder 14 at its upper end. The vertical auger 11 and the bottom auger 10 incorporate a spiral. The grain auger 12 has a base tube 15 connected to the top of the vertical auger 11 and a zoom tube 16 which is fitted to the outer circumference of the tip side thereof and can expand and contract. The base tube 15 has a spiral outer surface. A spiral shaft 18 having a shaft 17 is mounted, and the spiral shaft 1 is provided in the zoom cylinder 16.
A spiral shaft 14 made up of a retractable shaft and a spline shaft is fitted in the shaft 8, and can be expanded and contracted integrally with the zoom cylinder 16.

A spiral boss 2 having a constant length is fitted along the spiral shaft 14 so that the spiral boss 2 is movable in the direction of the spiral shaft 14 but integrally rotates in the rotating direction. . The spiral boss 2 is a spiral cylinder 25 that forms the spiral 1 on the outer circumference.
Has a large diameter, and the connecting metal 26 is attached to one end of the spiral cylinder 25.
The small-diameter shaft cylinder 5 is connected via. A dustproof seal 27 having a diameter capable of being fitted and slid on the inner circumferential surface of the spiral barrel 25 is fixedly provided on the outer peripheral portion of the shaft cylinder 5, and a stopper having a diameter slightly smaller than the dustproof seal 27 is provided at the tip end portion thereof. A ring 28 is provided, and the stopper ring 28 is provided with a notch 29.

Further, bearing holes 44 and 45, which are slidable in the axial direction, are formed on the inner circumferences of the front and rear metals 26 and 28 so as to be fitted to the spiral shaft 4 consisting of a hexagonal shaft. The spiral bosses 2 to be fitted are integrally rotated. A stopper pin 46 is provided at the tip of the spiral cylinder 25 for preventing the stopper from coming out, and the notch 29 of the stopper ring 28 is aligned with the spiral cylinder 25 between the spiral bosses 2 facing each other. 5 is a structure that can be fitted. By fitting the shaft cylinder 5 part to the spiral cylinder 25 and setting the notch 29 of the stopper ring 28 and the stopper pin 46 in phase,
Each spiral boss 2 is fitted to the spiral shaft 4.

The expansion and contraction of each spiral boss 2 in the axial direction is restricted between the stopper ring 28 into which the stopper pin 46 is fitted and the dustproof seal 27. Further, by shortening the zoom cylinder 16, the spiral shaft 4 and the spiral boss 2 are shortened. Grain transfer resistance acts on the spiral boss 2 so that the spiral boss 2 is on the inner side of the spiral 17 side. The spiral boss 2 will expand and contract sequentially. In the shortest state, the stopper pin 46 of each spiral boss 2 is locked to the dustproof seal 27.

In the illustrated example, a spring is not used for expansion and contraction between the spiral bosses 2, but a spring is provided between the spiral bosses 2 to constantly stretch or shorten the spiral bosses 2. Good. In this case, if a spring is provided in the spiral cylinder 25 to cover the spring, contact friction with the grain can be eliminated. Reference numeral 19 denotes a discharge port at the front end of the zoom cylinder 16, and 20 denotes a screw rod that expands and contracts the zoom cylinder 16 with respect to the base cylinder 15, rotatably supported by a bracket 22 of the base cylinder 15 and driven by forward and reverse rotations of a motor M1, The front end side is screwed into the bracket 21 on the zoom cylinder 16 side. Reference numeral 23 denotes a bearing metal, which is provided in the tip portion of the base cylinder 5 and receives the tip portion of the spiral shaft 18.

A slide cylinder 24 having a slightly larger diameter is provided at the tip of the base cylinder 5, and the zoom cylinder 16 is fitted and inserted over the outer circumference of these slide cylinders 24 to smoothly guide the expansion and contraction.
The bearing metal 23 is attached to the inner circumference of the slide cylinder 24 on the tip side. 4 is different from the above example in that the length A of the boss portion of the spiral boss 2 is set to be different from that of the spiral boss 2 in the configuration in which the spring 3 is interposed between the spiral bosses 2 formed on the peripheral surface in the axial intervals of the spiral bosses 2. It is shorter than the length B of 3 parts,
The expansion and contraction length of the spring 3 is increased, and the interval between the spirals 1, that is, the cut portion of the spiral 1 is shortened.
The spiral 1 of each spiral boss 2 is formed to project longer than the front end surface or the rear end surface of the boss portion, and the spring 3 is interposed between the end surfaces of the bosses.

In FIG. 5, the point different from the above example is that the tip end portion of the telescopic cylinder 14 for changing the vertical angle of the grain-removing cylinder 12 is formed with an appropriate interval C on the side of the base end portion of the base tube 15. Pin 3 is attached to the tip of the protruding arm 30.
The grain-removing auger 12 can be vertically rotated with respect to the upper end of the vertical auger by connecting and disconnecting with the telescopic cylinder 14. When the zoom barrel 16 is expanded and contracted with respect to the base barrel 15, a space C allowing the zoom barrel 16 to move in and out is formed between the base end portion of the base barrel 15 and the side arm 30. , Set the expansion and contraction length of the zoom tube 16 to a large value,
Moreover, the length of the base tube 15 can be set short. Moreover, since the arm 30 can be provided so as to project long along the side of the base cylinder 15, the load caused by the telescopic cylinder 14 can be reduced, and the arm 30 can be stably moved up and down.

A reinforcing arm 32 is provided outside the arm 30. The tip end of this arm 32 is connected by the pin 31, but the base end is fixed to the shaft 33 part of the center of rotation of the grain auger 12 with respect to the vertical auger 11, and together with the grain auger 12 around this shaft 33. Rotate up and down. In FIG. 6, the difference from the above example is that the vertical auger 1
The upper part of 1 is a holder 36 that is rotatable and rotatable with respect to the side surface of an culvert cover 35 that covers a culm chamber 34 that discharges the threshed culms.
Attach and support with. It has a simple structure and does not require a special support frame structure.

The threshing device 8 is provided with a feed chain 38 on one side of the threshing chamber in which the handling cylinder 37 is installed, inherits the grain culm conveyed from the front reaping device 7, and conveys it to the rear side for threshing. On the rear side of the threshing chamber, the threshing culms which have been threshed are inherited from the feed chain 38 and the rear culm cutter 3 is provided.
A drainage chain 40 for carrying to 9 is provided, and this drainage chain 4
The tip side upper side of the culm chamber 34 having 0 is covered with the culm cover 35. 41 is a culm cover that covers the upper side of the stock removal side of the culm chamber 34, and a threshing cover 42 that covers the upper part of the threshing chamber.
And a series of integrated structures that can be opened and closed.

The vertical auger 12 is located on the rear side of the Glen tank 9 and the upper end of the grain auger 1 by the turning motor M2.
It is swung horizontally with 2 and this vertical auger 12
The upper portion of the is supported by the holder 36 on the outer surface of the culvert cover 35. Also, this vertical auger 12 is this holder 36
It is rotatably supported with respect to. 43 is a threshing device 8
With the No. 1 grain fried machine, let the upper end look into the Glen tank 9,
Threshed grains can be fried in the Glen tank 9.

[Brief description of drawings]

FIG. 1 is a side view showing the operation of a grain auger part.

FIG. 2 is an enlarged side view and front view of a part thereof.

FIG. 3 is a side view of the combine.

FIG. 4 is a side view showing an example of another part thereof.

FIG. 5 is a side view showing an example of another part thereof.

FIG. 6 is a plan view of a combine showing an embodiment of a part thereof,
Partial side view and rear view.

[Explanation of symbols]

 1 spiral 2 spiral boss 4 spiral shaft 5 shaft cylinder

Claims (1)

[Claims] 1. A plurality of spiral bosses 2 each having a certain length, each having a spiral 1 on one end side and a shaft cylinder 5 having a small diameter on the other end side, are fitted around a spiral shaft 4 having an angular cross section. Driven to rotate,
A grain auger for combine harvesting in which the shaft cylinder 5 is telescopically inserted into the spiral 1 facing each other between the spiral bosses 2.