JPH0965755A - Grain unloading device - Google Patents

Abstract

(57) [Abstract] [Problem] To close a grain discharge port of a horizontal screw conveyor so that a grain cannot spill out while preventing it from spilling. A protective lid 20 is provided at a grain discharge port 14. The protective lid 20 is provided with a long hole 23 having a size such that the grains fall out but the hands and fingers cannot enter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical screw conveyor for longitudinally feeding a grain, and a horizontal screw which is connected to an upper portion of the vertical screw conveyor so as to be capable of undulating and swinging and laterally feeds the grain from the vertical screw conveyor. The present invention relates to a grain carrying-out device having a conveyor and the horizontal screw conveyor having a grain discharge port.

[0002]

2. Description of the Related Art In the above-mentioned grain carrying-out apparatus, as disclosed in, for example, Japanese Utility Model Laid-Open No. 64-28840,
The grain discharge port of the horizontal screw conveyor was provided with an openable / closable lid, and the grain discharge port could be closed for safety when the grain was not carried out.

[0003]

For example, in the case of removing grains from a grain tank of a combine harvester, if the grains remain in the horizontal screw conveyor after the completion of the grain discharge, the discharging device is placed in the storage posture. When traveling, the residual grain may spill out of the conveyor cylinder of the conveyor into the grain discharge cylinder due to the movement of the screw due to the switching of the posture of the discharge apparatus or the transmission of traveling vibration to the discharge apparatus. Then, in the case of the conventional grain unloading device, the grain discharge port was configured to be closed by applying a blind plate, so that the grains spilled into the grain discharge cylinder are received by the inner surface side of the lid body. It remained in the discharge tube. As a result, if the combine is stored with the grains remaining in the discharge cylinder, the storage will be continued for a long time until the next harvest time and the ventilation of the conveyor will be poor, etc. It may be attached to the lid or the exhaust pipe and may be difficult to remove, or may cause corrosion of the exhaust pipe. It is an object of the present invention to enable safety while preventing grains from spilling from the inside of the conveyor so that they do not remain in the discharge cylinder.

[0004]

In order to achieve the object, the present invention provides a vertical screw conveyor for longitudinally feeding a grain, and a grain from the vertical screw conveyor which is connected to an upper portion of the vertical screw conveyor so as to be capable of swinging up and down. With a horizontal screw conveyor that laterally feeds the grain, in the grain unloading device that is equipped with a grain discharge port in the horizontal screw conveyor,
It is characterized in that the grain discharge port is provided with a protective lid having a through hole through which grains can fall out. The operation is as follows.

If the grain spills into the grain discharge tube, it is allowed to fall out through the through hole, while the grain discharge port is closed by a protective lid so that it cannot be accessed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a mowing pretreatment device 1 for causing planting stem culms such as rice and wheat and mowing and transporting the cut culm to the rear of the machine is provided with a crawler traveling device 2 and an operating device. Threshing device 5, which is connected to the front part of the self-propelled machine body having the part 3 and the driving part 4 so as to be able to move up and down, and which threshes the cutting stem culm from the cutting pretreatment device 1, and threshing from the threshing device 5. A grain tank 6 for storing grains is provided in the self-propelled aircraft to form a combine.

A vertical screw conveyor 11 attached to the rear wall surface side of the grain tank 6, and an upper end portion of the vertical screw conveyor 11 can be swiveled around a vertical axis Y and around a horizontal axis X. The horizontal screw conveyor 12 connected so as to be capable of undulating and swinging operation constitutes a grain discharging device of the grain tank 6. That is, the vertical screw conveyor 11 inherits the degrained grains discharged from the grain tank 6 by the screw conveyor 6 a installed at the bottom of the grain tank 6 and vertically conveys them. Then, the horizontal screw conveyor 12 inherits the degrained grains from the vertical screw conveyor 11 and laterally conveys them to the grain discharge cylinder 13 located on the tip side of the horizontal screw conveyor 12, and the grain discharge cylinder 13
It is discharged from the grain discharge port 14 formed by.

As shown in FIGS. 2 and 3, the grain discharge port 14 is provided with a protective lid 20. This protective lid 20
Is a plurality of straight round bar members 21 ...
And one connecting member 22 that connects one end side of these round bar members 21 .. Long holes 23 for dropping out a plurality of grains
······················· is formed in the shape of a rake that is open to one end side of the protective lid 20. Then, the pair of mounting plates 24, 24 provided on the connecting member 22 are attached to the grain discharge cylinder 1
3 is rotatably connected to a support member 15 attached inside 3 by a connecting shaft 15a, so that the protective lid 20 moves up and down with the lid end 25 on the side where the long hole 23 is open being the free end side. The stopper 1 in which the mounting plate 24 is positioned inside the grain discharge cylinder 13 as shown by the phantom line in FIG.
6 and a closed position which covers the grain discharge port 14 and descends and swings from this closed position.
The cover is attached so that it switches to the open position to release the cover. The protection lid 20 is closed by the closing spring 17 which is a coil spring configured to be fitted on the connecting shaft 15a, one end of which is locked to the support member 15 and the other end of which is locked to the connecting member 22. It is urged to swing.

That is, when the grain carrying-out device stops the grain discharging, the protective lid 20 is naturally in the closed position for the closing spring 17 so that the grain discharging port 14 cannot be touched by a hand or a finger. To cover. At this time, the horizontal screw conveyor 1
Vibration when the 2 is retracted and swiveled, rotation of the screw 12a,
If the grain may spill from the horizontal screw conveyor 12 to the grain discharge cylinder 13 due to traveling vibration or the like, the grain spills to the outside from the long hole 23 so as not to stay inside the grain discharge cylinder 13. When performing grain discharge, when the amount of grain discharged from the horizontal screw conveyor 12 to the grain discharge cylinder 13 is small and the grain pressure applied to the protective lid 20 is weak, the protective lid 20 is a closing spring 17. In the closed position, the grain is discharged through the slot 23. When the amount of grains discharged from the horizontal screw conveyor 12 to the grain discharge cylinder 13 increases and the grain pressure applied to the protective lid 20 increases, the protective lid 20 resists the closing spring 17 due to the pressure of the grain. The opening operation is performed, and the grain is discharged smoothly without receiving the resistance of the protective lid 20 as much as possible. At this time, the protective lid 20 has a long hole 23.
Is in a downward opening posture. As a result, even if straw waste mixed and discharged in the grain is caught on the round bar material 21, it flows down along the round bar material 21, spontaneously comes off from the round bar material 21, and adheres to the protective lid 20. It's hard to be left alone. In addition, 18 shown in FIG. 2 is a boot attached to the grain discharge cylinder 13.

[Other Embodiments] FIGS. 5 and 6 show a grain discharging portion of the horizontal screw conveyor 12 provided with the protective lid 30 of another embodiment. The protective lid 30 is formed by a plurality of bent round bars 31 formed in a U shape and a connecting member 32 that connects the bent portions of these bent round bars 31. And a plurality of elongated holes 33 ... Each of which has a size that does not allow the fingers of the hand to enter even if the grain passes through is formed in a rake shape with one end side of the protective lid 30 opened. Then, by attaching the connecting member 32 to the inner surface side of the grain discharge cylinder 13, the elongated hole 33 of the protective lid 30 is formed.
The lid end 34 on the side where is opened has an inclined posture in which it is located at a lower level than the connecting member 32, and a gap 35 is formed between the lid end 34 and the inner surface of the grain discharge cylinder 13. The protective cover 30 is provided on the grain discharge port 14 in the state in which the present condition exists. That is, the protective lid 30 constantly covers the grain discharge port 14 so that the grain discharge port 14 cannot be accessed regardless of whether the grain discharge device carries out the grain. And, even though the grain carrying-out device is stopped, the horizontal screw conveyor 1
When the grain may spill from 2 to the grain discharge cylinder 13, and when the grain is discharged by the grain discharge device, the grain is discharged from the horizontal screw conveyor 12 to the grain discharge cylinder 13. In this case, the grain is discharged to the outside so that it does not fall out of the long hole 33 of the protective lid 30 and stay inside the grain discharge cylinder 13. Even if straw waste mixed and discharged in the grain is caught on the round bar 31, it flows down to the tip side along the round bar 31 and in the gap 35 between the lid end 34 and the grain discharge cylinder 13. Protective lid 30
Difficult to remain attached to.

FIG. 7 shows a grain discharging section of the horizontal screw conveyor 12 provided with a protective lid 40 of another embodiment. The protective lid 40 is made of a plate body having a large number of through holes 41, ... And the swing end 42 rotatably connected to the grain discharge cylinder 13 so as to be vertically swingably attached to the grain discharge cylinder 13, and the free end side of the protective lid 40 is the transport cylinder of the horizontal screw conveyor 12. The closed position in which the grain discharge port 14 is closed while being engaged with the action portion 43a of the lock tool 43 located inside, and the free end side of the protective lid 40 is disengaged from the lock tool 43 and descended to remove the grain. It is adapted to switch to an open position in which the outlet 14 is opened. As shown in FIG. 9, a spring receiving member 44 integrally rotatably attached to the end of the rotary support shaft 42 projecting outward from the grain discharge cylinder 13 and a closing spring 45 attached across the grain discharge cylinder 13. The protective lid 40 is urged by swinging to the closed position. The lock tool 43 is made of a leaf spring so that the acting portion 43a swings around a portion connected to the inside of the conveying cylinder of the horizontal screw conveyor 12 as a swing center.
The grains conveyed to the grain discharge port 14 of the lock are fed to the pressure receiving portion 43b of the lock tool 43 by the conveying force of the horizontal screw conveyor 12.
When pressure is applied to the lock lid 43, the lock 43 is elastically deformed to release the closing lock of the protective lid 40 by the action portion 43a, and the protective lid 40 is opened by the pressure of the grain. There is.

In other words, when the grain carrying-out device does not carry out the grain carrying-out, the protective lid 40 is locked at the closed position by the lock tool 43, and the grain discharging port 14 is closed so that it cannot be accessed. At this time, if the grain spills from the horizontal screw conveyor 12 to the grain discharge port 14, the grain discharge cylinder 13
The protective cover 40 falls out of the through hole 41 so as not to stay inside. Then, when the grain is carried out, as the grain reaches the grain discharge port 14, the through hole 4 of the protective lid 40 is provided.
Although it falls off from No. 1, the amount of grain fed into the grain discharge port 14 is larger than the amount of grain dropped out within a certain period of time, so that the grain initially stays inside the protective lid 40. As this grain retention occurs, the grain pressure acts on the pressure receiving portion 43b of the lock tool 43, and the lock tool 43 automatically releases the closing lock of the protective lid 40. Then, the protective lid 40 descends due to the pressure of the grain to open the grain discharge port 14, and the grain from the horizontal screw conveyor 12 does not receive the discharge resistance of the protective lid 40 from the grain discharge port 13. Is discharged.

[0013]

As described above, even if the grain is spilled from the screw into the grain discharge tube while being closed so that it cannot be accessed by hand, safety is ensured, and the grain falls out from the through hole and accumulates in the grain discharge tube. By avoiding being left behind,
It has become possible to avoid the problems described at the beginning such as the deterioration of the grain in the grain discharge cylinder.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

1] Side view of the whole combine

FIG. 2 is a cross-sectional view of a grain discharging part of the horizontal screw conveyor.

FIG. 3 is a bottom view of a grain discharging part of the horizontal screw conveyor.

FIG. 4 is a perspective view of a protective lid.

FIG. 5 is a cross-sectional view of a grain discharging unit according to another embodiment.

FIG. 6 is a bottom view of a grain discharging unit according to another embodiment.

FIG. 7 is a cross-sectional view of a grain discharging unit according to another embodiment.

FIG. 8 is a perspective view of a protective cover according to another embodiment.

FIG. 9 is a side view of a grain discharging unit according to another embodiment.

[Explanation of symbols]

 11 Vertical Screw Conveyor 12 Horizontal Screw Conveyor 13 Discharge Tube 14 Grain Discharge Port 20, 30, 40 Protective Lid 23, 33, 41 Through Hole 25, 34 Lid End 35 Gap

Claims (3)

[Claims] 1. A vertical screw conveyor (11) for vertically feeding grains, which is connected to an upper portion of the vertical screw conveyor (11) so as to be capable of undulating and swinging, and horizontally feeds grains from the vertical screw conveyor (11). A grain unloading device that includes a horizontal screw conveyor (12) and that has a grain discharge port (14) in the horizontal screw conveyor (12), wherein the grain discharge port (14) Protective lid (20,30, with a through hole (23,33,41) that can be removed
40) equipped with the grain carrying-out apparatus. 2. A state in which the through hole (23) is an elongated hole that opens to one end side of the protective lid (20), and the lid end (25) on the side where the elongated hole is open is the free end side. With the protective lid (2
(0) is attached so that it can be opened and closed by swinging. 3. The through hole (33) is a long hole that opens to one end side of the protective lid (30), and the lid end (34) on the side where the long hole is opened and the grain discharge port. The grain discharging device according to claim 1, wherein a gap (35) exists between the discharge tube (13) forming the (14).