JPH0725003Y2 - Folding discharge auger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a folding discharge auger, that is, a discharge auger for discharging paddy from a paddy tank toward a predetermined position.

(Prior Art) This type of discharge auger is composed of a vertical discharge auger and a horizontal auger. The vertical discharge auger is installed vertically, and the horizontal auger is connected from above so that the vertical auger can rotate up and down. The rice in the paddy tank is conveyed to the vertical discharge auger by the screw conveyor by the paddy transport conveyor which is configured to be rotatable around the axis as the axis and is arranged at the bottom of the paddy tank.

In addition, the horizontal auger is designed to be folded in two, and the drive of the discharge auger is provided with a pin on the drive shaft and a slit on the driven shaft side so that it can be driven by fitting them together. There is.

(Problems to be Solved by the Invention) In the discharge auger as described above, a pin is provided on the drive shaft, a slit is formed on the driven shaft side, and the drive is transmitted between them.

Conventionally, the slit portion is provided at two places, and the drive side pin and the driven side slit portion are fitted to each other only after one rotation, and the probability of coupling is low.

That is, in FIG. 3, (1) is the discharge auger, and the drive side conveyor (2) is installed in the base discharge auger (1a).
The driven-side conveyor (3) is installed inside the tip discharge auger (1b).

The drive-side conveyor shaft and the driven-side conveyor shaft are coupled to each other such that the conical portion (4a) of the drive-side conveyor shaft end (4) penetrates the funnel portion (5a) of the driven-side conveyor shaft end (5). The base pin (6) of 4a) is adapted to fit into the slit (7) of the funnel (5a).

Further, the other end (8) of the driven side conveyor shaft is formed to have a small diameter, and a compression spring (9) is wound around this, which is the bearing bush (11) of the case lid (10) and the conveyor shaft (3). It is interposed between the step and the step.

Therefore, the driving side conveyor shaft end (4) and the driven side conveyor shaft end (5) are fitted while compressing the compression spring (9).

Even if the pin (6) does not enter the slit portion (7), the pin (6) enters the slit portion (7) by the rotation of the drive shaft and the action of the compression spring (9).

However, if the spring (9) is damaged, the compression action is lost, and therefore the pin (6) does not enter the slit portion, and there is a drawback that the connection is not easily performed.

Therefore, the object of the present invention is to eliminate the above-mentioned drawbacks and to obtain a folding discharge auger that can be reliably and easily connected to a use state.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention has a two-fold structure of a base discharge auger with a drive side conveyor and a tip discharge auger with a driven side conveyor. The driven-side conveyor shaft and the driven-side conveyor shaft are mated with each other, and the driving-side conveyor shaft in the fitting portion is provided with a pin orthogonal to the shaft, and the driven-side conveyor shaft. A folding discharge auger was devised, which was characterized in that a slitting portion into which the pin fits was provided, and tapered surfaces facing the slitting portion were formed corresponding to both ends of the pin.

(Effect of the Invention) According to the technical means of the present invention, by forming the tapered surface facing the slit portion corresponding to both ends of the pin, the driven-side tapered surface slips off at any position of the coupling pin. Since the pin surely enters the slitting portion, it has a feature that the split auger can be easily connected to the use state. Since there is no conventional compression spring seen on the driven-side conveyor shaft end, the pin always enters the slit portion and is reliably driven unless the pin and the tapered surface are worn.

In addition, there is little dancing in the driven shaft direction due to expansion and contraction of the compression spring. If the conveyor shaft moves axially in small steps, the carrying capacity will drop.

Besides, the compression spring and the bush (or collar boss) for holding it are not required, the number of parts is reduced, and the connecting device of the present invention can be installed in any part of the auger, and the space for the compression spring is not required. Smooth paddy transportation.

(Example) Hereinafter, the Example shown in drawing is described.

First, a combine harvester having a discharge auger for discharging the paddy from the paddy tank toward a predetermined position will be described, but the present invention is also applicable to a grain tank of a self-removing combine harvester or a general-purpose combine harvester.

In FIG. 4, a mowing frame (10) supports a raising device and a not-shown mowing section and grain culm transporting section (12) to form a pretreatment section. The grain culms are arranged in a horizontal state and supplied to the threshing unit (13).

The threshing part (13) is mounted on the crawler (14), and the paddy tank (15) is on the right side of the threshing part (13) in the combine traveling direction.

The auxiliary step (16) in front of the paddy tank (15) has a driver's seat (17) and an operating column (18).

Then, from the first gutter (not shown), the paddy is put into the paddy tank (15) through the grain hoisting cylinder (19), and the paddy in the paddy tank is discharged from the screw conveyor at the bottom of the tank at a predetermined position with an auger (1). Is discharged toward.

(20) is its vertical discharge auger, and (1) is its horizontal auger.

The horizontal auger is divided into two parts, (1a) shows the proximal horizontal auger, and (1b) shows the distal horizontal auger.

And, the connecting metal fittings (21) (22) provided on each are pivotally attached to each other by pin connection, and the auger tip and the base are aligned in a straight line by the lock metal fitting so that they can be locked. There is.

By the way, the conveyor shaft end (4) of the drive side conveyor (3)
And the conveyor shaft end (5) of the driven side conveyor (2) are mating male and female, but the conical part (4a) and the funnel part (5a) are mated.

The tapered surface (5a ') of the funnel portion (5a) has a slit portion (7) to which the pin (6) fits.

Therefore, when the conical portion (4a) and the funnel portion (5a) are fitted together, the driven side taper surface (5a ') slides down regardless of the position of the pin (6), and the pin (6) is securely attached. Since it enters the slitting portion, the split discharge auger can be easily connected to the use state.

In any case, since there is no conventional compression spring, unless the pin (6) and the boss taper surface (5a ') are worn,
Since the pin (6) always enters the slit portion (7), the connection is facilitated.

Further, since there is no compression spring, there is no movement of the driven shaft in the axial direction due to the expansion and contraction of the spring, and the carrying capacity does not drop.

[Brief description of drawings]

FIG. 1 (a) (b) is a cross-sectional view of the device of the present invention and a diagram showing the relative relationship between the pin and the tapered surface. FIG. 2 (a) (b) is an explanatory view of a slitting portion of the driven shaft end in the device of the present invention, FIG. 3 is a sectional view of a conventional discharge auger. FIG. 4 is a front view of a combine. (1) …… Discharge auger (1a) …… Base discharge auger (1b) …… Tip discharge auger (2) …… Driven side conveyor shaft (3) …… Drive side conveyor shaft (4) …… Drive side conveyor shaft End (4a) …… Conical part (5) …… Driven side conveyor shaft end (5a) …… Funnel part (5a ′) …… Tapered surface (6) …… Pin (7) …… Slitted surface

Claims (1)

[Scope of utility model registration request] 1. A base discharge auger in which a drive side conveyor is installed and a tip discharge auger in which a driven side conveyor is installed are connected in a two-fold structure, and the drive side conveyor shaft and the driven side conveyor shaft are provided. And male and female are fitted, and a pin orthogonal to the shaft is provided on the driving side conveyor shaft in the fitting part, and a slitting part to which the pin is fitted is provided on the driven side conveyor shaft. Folding discharge auger, characterized in that tapered faces facing the parts are formed corresponding to both ends of the pin.