JPH09248053A - Extension mechanism of discharging auger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a discharging auger discharging paddy to the loading space of a truck, etc., from the grain tank of a combine. SOLUTION: The grain tank for storing paddy after reading, threshing and selecting is provided and the discharging auger 19 is arranged over the combine in order to discharge paddy from this grain tank in this constitution. It is constituted of a fixed auer 11 cylindrically constituting the discharging auger and a movable auger 32 freely slidably fitted to the fixed auger 11. The base part side of the rotary shaft of a carrying spiller 40 is supported within the fixed auger 11, the tip side of a moving spiller 42 is fixed to an extension shaft to freely rotatably support the tip of the extension shaft on the tip side of the movable auger 32, the base part side of the extension shaft is freely rotationally inserted from the tip side of the rotary shaft and a moving spiller base part side is brought into slide-contact with a carrying spiller by floating against the extension shaft to constitute the movable auger to be capable of freely extending.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge auger expansion / contraction mechanism for discharging paddy from a combine grain tank to a truck bed or the like.

[0002]

2. Description of the Related Art Conventionally, a grain tank has been arranged at the rear part of a combine seat to mow grain culms, thresh, and store the refined grains after selection in the grain tank. When the mowing was completed, it was discharged to the truck bed, dryer, etc. by the discharge auger. This discharge auger is provided with a rotation base on the side of the Glen tank so that the discharge auger can be moved to an arbitrary position by rotating the discharge auger up and down or left and right.

[0003]

However, the length of the conventional discharge auger is constant, and the length is within the range of the machine by making it shorter than the total length of the combine machine. It could be attached, but it became longer than the fuselage, and it was difficult to use because it hits obstacles when running and sticks out when storing. Further, as shown in FIG. 6, when the paddy of the truck T is discharged from the Glen tank 3 using the discharge auger 19, if there is a ridge or a river between the combine and the truck, the discharge port reaches It may be difficult, and if the discharge port is kept constant, the paddy that accumulates on the loading platform becomes piled up, and it is not possible to deposit it up to the corners of the loading platform. It is rotated to the left and right, but if it is rotated to the left and right, the discharge port may stick out, and if it is rotated up and down, the paddy may scatter, and it may not be possible to discharge it to the desired position unless the machine is moved. there were.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, mowing, threshing, provided with a grain tank for storing the paddy after selection, in a configuration in which the discharge auger is arranged above the combine in order to discharge from the grain tank, a fixed auger configured as a tubular discharge auger, It is composed of a movable auger that slidably fits into the fixed auger, supports the base side of the rotary shaft of the transport spiral inside the fixed auger, and fixes the tip side of the moving spiral to the telescopic shaft at the tip side inside the movable auger. Then, the distal end of the telescopic shaft is rotatably supported, the base side of the telescopic shaft is rotatably inserted from the tip side of the rotary shaft, and the moving spiral base side is floated on the telescopic shaft and slid onto the transport spiral. The movable augers are arranged so as to be in contact with each other and can be expanded and contracted.

A telescopic drive actuator is arranged between the movable auger and the fixed auger, and the discharge auger is telescopically extended by the operation of the telescopic drive actuator.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 is a side view of a combine equipped with a stretchable discharge auger according to the present invention, FIG. 2 is a side view showing a discharge auger provided with a screw according to the present invention, and FIG. 3 is a discharge obtained by sliding a movable auger forward. FIG. 4 is a side view cross-sectional view of the auger, FIG. 4 is a rear cross-sectional view showing a fixed auger in a fitted state, and FIG. 5 is a plan view of a combine in a state in which paddy is discharged to a bed of a truck.

First, the overall structure of the combine will be described with reference to FIG. Crawler type traveling device 1 and body frame 2
Is mounted, and a driver's seat A is arranged at the front part on the right side in the traveling direction of the machine body frame 2. A driver's seat 60 is arranged on the driver's seat A, and a front column 61 is provided in front of the driver's seat 60.
Is arranged. An operation lever 62 for performing a steering operation is projected upward on the front column 61, and a display panel 64 is provided on the upper surface so that it is possible to display whether or not there is an abnormality in the battery voltage, water temperature, hydraulic pressure, or the like. The amount of paddy in the Glen tank 3 is displayed. A side column 65 is provided on the side of the driving seat 60, and a main transmission lever 63, a work lever, and the like project from the upper surface.
The raising / mowing device B is arranged in front of the left side of the machine body frame 2 in the traveling direction, the grain culms are raised, the stocks are mowed by the cutting blades, and conveyed backward by the conveying device. A threshing device D is arranged in the rear part of the raising and reaping device B, and the stocker of the grain culm conveyed by the conveying device is sandwiched by a feed chain (not shown) and conveyed rearward, and is shredded by the handling cylinder 6. .

The dehusked by the threshing device D and sorted is conveyed to the inside of the grain tank 3 through a conveyor (not shown). A discharge conveyor 16 is provided in the lower part of the Glen tank 3 in the front-rear direction, and the rear end of the discharge conveyor 16 is communicated with the lower end of a vertical conveyor 18 to form a vertical conveyor 18.
The case is configured so as to be coaxially rotatable at a midway portion, and the upper portion of the vertical conveyor 18 is provided at the rotation base portion 15 of the discharge auger 19.
And is rotatably provided in the vertical direction. The discharge port 9 is formed on the lower surface of the tip of the discharge auger 19.

A screw is arranged inside each of the conveyors 16 and 18, and gears and bevel gears are arranged at the ends of the screw shafts so that they are interlocked and connected. The power is transmitted to the power transmission case of the discharge conveyor 16 to drive the discharge conveyor 16, and the power is transmitted from the rear portion of the discharge conveyor 16 to the lower portion of the vertical conveyor 18 so that the discharge auger 1 is discharged from the upper end of the vertical conveyor 18.
Power is transmitted to the rotating shaft 13 of 9 to be driven, and the paddy stored in the Glen tank 3 can be discharged.

Next, the discharge auger 19 of the present invention which can be expanded and contracted will be described. Discharge auger 19 is fixed auger 1
1 and a movable auger 32. The base side of the fixed auger 11 is communicatively supported by the upper end of the vertical conveyor 18 by the rotating base 15, and the movable auger 32 is slidably fitted to the tip of the fixed auger 11. The fixed auger 11 and the movable auger 32 are formed in a pipe shape and the inside of the pipe is used to convey the paddy. As shown in FIG. 2, the fixed auger has a hollow cylindrical body 12 having a base end fixed to a rotating base 15 and the other end open. A ring 13 is externally fitted and sealed on the outer peripheral surface of the front end portion of the cylindrical body 12.

As shown in FIG. 3, the movable auger 32 covers the front end portion of the fixed auger 11, and a support cylinder 33 constituting the main body and a transfer cylinder 34 fitted inside the cylindrical body 12 of the fixed auger 11. It has a double structure. The front portion of the support cylinder 33 is covered with a front wall 35, and the discharge port 9 is formed below the front portion of the support cylinder 33. A guide cylinder 36 is formed at the rear portion of the support cylinder 33 so as to increase the diameter by one step in the radial direction. As shown in the sectional views of FIGS. 3 and 4, the guide cylinder 36 is provided with guide portions 31, 31, ... On its inner peripheral surface. A roller 37 having an axis in a tangential direction is pivotally supported on the guide portion 31, and the guide surface of the roller 37 is projected toward the center. Further, the guide portion 31.3
1 on the front and rear of the guide tube 36
Is arranged. In this embodiment, the guide portion 3
Four sets of 1 · 31 ... Are provided at every 90 ° in the circumferential direction, but the number of sets is not limited, and three or six sets can be provided.

The carrying tube 34 has a diameter smaller than that of the support tube 33, and is shaped so as to fit with the inner peripheral surface of the tubular body 12. The transfer cylinder 34 is fixed to the inner surface of the front wall 35, and a charging hole 34a is formed in the lower front portion of the transfer cylinder 34. The charging hole 34a is connected to the outside through the discharge port 9. There is.

The guide tube 3 of the movable auger 32
When the tubular body 12 of the fixed auger 11 is inserted into the inside of 6, the outer peripheral surface of the tubular body 12 is fitted into a position between the rollers 37, 37 ... Of the guide portions 31, 31 ,. The axis of the auger 11 and the axis of the movable auger 32 are held so as to coincide with each other, and the movable auger 32 can be slid without being tilted in the vertical direction by the guide portions 31, 31 arranged in the front and rear. On the other hand, a transfer tube 34 is fitted on the inner peripheral surface of the cylindrical body 12 of the fixed auger 11 to secure a transfer path for the paddy. Therefore, when the movable auger 32 is externally fitted to the base of the fixed auger 11, the tube body 12 is inserted between the support tube 33 and the transfer tube 34 of the movable auger 32 having the double structure, and the transfer path of the paddy is linear. Keep it at. In this embodiment,
The movable auger 32 has a double structure, and the inner pipe-shaped carrier cylinder 34 is slidably fitted into the cylinder body 12. However, the support cylinder 33 slides on the outer peripheral surface of the cylinder body 12. It can also be configured to be freely fitted.

A telescopic drive actuator is arranged on the rear upper surface of the fixed auger 32. By driving the telescopic drive actuator, the movable auger 32 is moved so that the telescopic drive actuator 32 can be extended and contracted to an arbitrary length. That is,
As shown in FIGS. 2 to 4, a drive motor M as a telescopic drive actuator is provided on the upper surface of the fixed auger 11 on the base side of the cylindrical body 12 so that the drive motor M can be rotated in the forward and reverse directions from the driver's seat. A forward / reverse rotation switch (not shown) is provided in the vicinity of the operating unit A to rotate the drive motor M forward / reversely so that the discharge auger 19 can be expanded and contracted. An output shaft 50 of the drive motor M is projected forward in parallel with the axial center direction of the fixed auger 11, and a screw rod 51 is fixed to the front end of the output shaft 50. The threaded rod 51 has a thread groove formed on the outer peripheral surface thereof, and the other end of the threaded rod 51 projects further forward. On the other hand, an engaging portion 53 is fixedly provided above the outer peripheral surface of the guide cylinder 33 of the movable auger 32, and a screw hole 53a having an axial center in the front-rear direction is opened in the engaging portion 53 to allow the screw Stick 5
1 is inserted while being screwed into the screw hole 53a. Further, a protrusion restriction nut 54 is screwed and fixed to the front end portion of the screw rod 51, and the reduction restriction nut 5 is also attached to the base end side of the screw rod 51.
5 is fixed by screwing.

The movable auger 32 is fixed to the fixed auger 11.
From the contracted state of the discharge auger 19 inserted into the base of the engaging portion 53, the engaging portion 53 is located at the end of the screw rod 51 on the motor side.
Is engaged and drives the drive motor M to drive the screw rod 51.
When is rotated, the engaging portion 53 is moved forward in accordance with the thread groove, so that the movable auger 32 is slid forward and the discharge auger 19 is extended. Similarly, by rotating the drive motor M in the reverse direction, the engaging portion 53 is moved to the screw rod 51.
The movable auger 32 is moved to the base side, and the discharge auger 19 is contracted. However, in this embodiment, although the engaging portion 53 that engages with the screw rod 51 is moved, the rack is projected rearward from the rear end portion of the movable auger 32 and engaged with the rack on the fixed auger 11 side. It is also possible to have a structure in which matching gears are fixed, and it is also possible to drive by means of a cylinder or the like.

A screw is laterally installed on the axial center of the cylindrical body 12 of the fixed auger 11 and the conveying cylinder 34 of the movable auger 32. The screw has a conveying spiral 40, a moving spiral 42, and these spirals 40. It is composed of a rotary shaft 39 for fixing 42 and a telescopic shaft 41. As shown in FIG. 2, the transport spiral 40 has a support plate 46 disposed on the base side of the cylindrical body 12 of the fixed auger 11, and a spiral transport spiral 40 around the outer circumference of a rotary shaft 39 pivotally supported by the support plate 46. Is fixed. The rotating shaft 39 has substantially the same length as the cylindrical body 12, and the inside of the rotating shaft 39 is hollow. The rear end of the rotary shaft 39 is interlocked with the rotary shaft in the rotary base 15.

Then, as shown in FIG. 3, the moving spiral 42 is arranged on the axis of the conveying cylinder 34 of the movable auger 32. A telescopic shaft 41 is arranged on the axis of the transfer cylinder 34, and the front end is rotatably supported on the front wall 35.
The expandable shaft 41 is formed to have substantially the same length as the movable auger 32, and has a fixed portion 41a having the same shaft diameter as the rotating shaft 39 at the front.
And a sliding portion 41b for narrowing the shaft diameter is formed in the rear part. The moving spiral 42 is formed to have a diameter substantially the same as the conveying screw 40 fixedly wound around the rotating shaft 39, and the front portion of the moving spiral 42 is fixed to the fixed portion 41a.
The rear part of the moving spiral 42 extends to the base end of the telescopic shaft 41 at a fixed interval (in a floating state) on the outer periphery of the sliding part 41b, and the base side of the moving spiral 42 is the transport spiral 40.
It is wound around the outer circumference of the rotating shaft 39 so as to be overlapped with the above.

Further, the front end of the fixed portion 41a of the expandable shaft 41 is rotatably supported by a bearing arranged on the front wall 35, and the sliding portion 41b is projected rearward, and the hollow rotary shaft is formed. It is loosely fitted inside 39 so as to be slidable in the axial direction.
That is, the telescopic shaft 41 can freely rotate independently of the rotation of the rotary shaft 39, and at the same time, the sliding portion 41b of the telescopic shaft 41 moves back and forth inside the rotary shaft 39 due to the back-and-forth movement of the movable auger 32. It is designed to slide on.

With this configuration, when the rotary shaft inside the rotary base 15 is driven to rotate the rotary shaft 39 inside the fixed auger 11 and the transport spiral 40 is rotated, the transport spiral 40 and the transport spiral 40 are rotated. Since the moving spiral 42 is superposed on the moving spiral 42, the rotation of the transport spiral 40 causes the moving spiral 42 to rotate integrally. Therefore, the paddy is transported from the tubular body 12 to the transport barrel 34, and the paddy is discharged from the discharge port 9. Then, when the drive motor M is driven to move the movable auger 32 forward in order to extend the discharge auger 19, the telescopic shaft 41 and the moving spiral 42 are pulled forward, and the moving spiral 42 moves to the transport spiral 40. Since the expandable shaft 41 can freely rotate with respect to the rotary shaft 39 at this time as it rotates along the spiral, the moving spiral 42 rotates in the direction opposite to the rotation direction during paddy transfer, while the transfer spiral 40 rotates. Sliding on, the screw is extended as shown in FIG. As described above, even when the discharge auger 19 is extended, since the transport spiral 40 and the moving spiral 42 are overlapped with each other, the rotational power for transporting the paddy can be transmitted. Similarly, when the movable auger 32 is moved backward, the moving spiral 42 is rotated while sliding on the transport spiral 40, so that the screw can be contracted.

[0020]

The present invention is configured as described above.
The following effects are obtained. That is, the screw length is expanded or contracted by rotating the moving spiral along the transfer spiral along with the expansion of the movable auger at the time of expansion and contraction, and adjusting the amount of superposition of the moving spiral and the transfer spiral. Since it is flexible, the range of discharge can be expanded by utilizing the expansion and contraction of the discharge auger. In addition, since the screws can be expanded and contracted and arranged in the same axis, the movable auger can be made thin and have a lightweight structure. The visibility when set on the agarest can be kept good. Also, since it is lightweight, it is possible to reduce the driving force for expanding and contracting the discharge auger.
It is possible to construct an inexpensive discharge auger.

According to the second aspect of the invention, the discharge auger can be easily expanded / contracted by operating the expansion / contraction drive actuator, the structure can be simplified, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a combine equipped with a stretchable discharge auger of the present invention.

FIG. 2 is a side view showing a discharge auger provided with the screw of the present invention.

FIG. 3 is a side sectional view of a discharge auger in which a movable auger is slid forward.

FIG. 4 is a rear cross-sectional view showing a fitted state of a fixed auger.

FIG. 5 is a plan view of the combine in a state in which the paddy is discharged to the bed of the truck.

[Explanation of symbols]

 3 Glen tank 11 Fixed auger 19 Discharge auger 32 Movable auger 39 Rotating shaft 40 Transporting spiral 41 Expanding shaft 42 Moving spiral

Claims (2)

[Claims] 1. A fixed structure in which a discharge auger is cylindrically arranged in a structure in which a grain tank for storing paddy after cutting, threshing, and sorting is provided, and the discharge auger is arranged above the combine for discharging from the grain tank. Comprised of an auger and a movable auger slidably fitted to the fixed auger,
The base side of the rotary shaft of the transport spiral is supported in the fixed auger, the tip side of the moving spiral is fixed to the telescopic shaft at the tip side of the movable auger, and the tip of the telescopic shaft is rotatably supported. The base side is rotatably inserted from the tip end side of the rotary shaft, and the movable spiral base side is floated with respect to the telescopic shaft and slidably arranged on the transport spiral, and the movable auger is configured to be telescopic. Expansion and contraction mechanism for the discharge auger. 2. A discharge auger characterized in that a telescopic drive actuator is disposed between the movable auger and the fixed auger according to claim 1, and the exhaust auger is telescopically operated by the operation of the telescopic drive actuator. Expansion mechanism.