JPH0229887Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a grain tank in a combine harvester or the like. In a combine harvester that increases work efficiency by transferring grain, such as paddy, from a grain tank mounted on the machine to a transport vehicle without bagging it, a spiral body is installed at the bottom of the tank for handling grain. Many of them are configured so that they are horizontally hung so that they can rotate freely, and the grains transferred horizontally by the spiral body are transferred to a transport vehicle outside the machine using the discharge force of a discharge thrower installed on one side of the tank. . In such a grain tank, as shown in Fig. 8, an idea has been proposed in which a hinge-type shutter is attached above the spiral body so that it can be opened and closed.
No. 156777). However, such a device has the following disadvantages.

That is, when the shaft is opened as shown in the figure in order to discharge the grains when the tank accumulates, the grains in the tank are sequentially fed out to the Slowani side by the spiral body A, and as the discharge time elapses, the grains in the tank are It is discharged in the states shown in Figures a through 11c. In other words, grains are already fed out in the grain passage A′ side where the helical body A has a large amount of penetration before the final discharge, whereas grains remain on the passage A″ side where the penetration is poor as shown in the shaded area E. Since the remaining grains are fed out only on the A'' side of the passage where they are poorly penetrated, it takes longer than necessary to completely eject them.

Therefore, in order to perform an equal feeding action on the passages A' and A'' on both sides, the gap between the shafts on the tank bottom plate C' when the shutter is open is set to be narrower on the passage A' side, while leaving the interval on the passage A'' side the same as before. Alternatively, it is conceivable to leave the passage A' as it is and set the passage A'' side wider to adjust the amount of grains flowing into the spiral body A side, but in the former case, the passage I'
In addition to reducing the feeding capacity on the side, a bridging phenomenon occurs on the side of the passage A', and in the latter case, too many grains enter the A part of the spiral body, causing damage to the grains and clogging, which is a new drawback. It is something that occurs.

The present invention was developed based on the above-mentioned circumstances, and includes a spiral body for feeding out grains that is rotatably suspended horizontally at the bottom of the grain tank, and a grain passage toward the spiral body located near the top of the spiral body. In a grain tank equipped with a shutter for opening and closing the grain passage, above the shutter there is a downward direction toward the grain passage a side where the amount of grain penetration is large in relation to the rotational direction of the spiral body and the tank bottom plate. A tilted partition plate is provided, and the interior of the tank is divided into two by the partition plate, so that the tank capacity on the grain passage a side is larger than the tank capacity on the grain passage b side, where the amount of penetration is smaller. As a result, although the structure is extremely simple, the grain delivery efficiency of the spiral body can be maintained at the calculated ideal state until all ejection is completed, eliminating wasted ejection time and allowing for quick grain delivery. It is an object of the present invention to provide a grain tank in a combine harvester or the like that can finish discharging grains.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, 1 is a grain tank of a combine harvester in which the discharge port 2' of the grain lifting cylinder 2 is facing on the inside upper part, and the threshing part is located behind the driver's seat 3. It is located on the side of 4 and is mounted on the aircraft. 5 is a thrower for discharging grains and blade 6
The side of the fan case 5' containing the fan case 5' is rotatably connected to the front plate 1' side of the grain tank 1.

Reference numeral 7 denotes a spiral body for feeding out grains, which is rotatably suspended horizontally in a gutter-like part at the bottom of the tank.
is designed to rotate in the direction of the arrow in FIG.

Reference numeral 8 denotes a hinge-type shutter mounted directly above the spiral body 7 so as to be openable and closable, and both ends of the fulcrum shaft 8' of the shutter 8 are connected to guide elongated holes 9 provided in the front side plate 1' and rear side plate 1'' of the tank 1. 9 so as to be able to move vertically within a predetermined range. Reference numerals 10 and 10 denote a pair of front and rear link arms, and the base ends of each link arm are connected to the front and rear side plates 1' of the tank 1,
They are integrally connected by a shaft 10a which is rotatably supported between 1", and their distal ends are pivotally connected to the fulcrum shaft 8' of the shutter 8 through elongated holes 10'.

11 is an operating rod of link arms 10, 10;
12 is an operating lever pivotally supported on the tank front side plate 1';
13 is a guide plate for the operating lever 12, and 14 is a toggle spring for positioning the operating lever. These operating rod 11, operating lever 12, toggle spring 14, etc. constitute an operating section A of the shutter 8.

Reference numeral 15 denotes an inverted V-shaped shutter cover fixed above the shutter 8, and between the lower end of the shutter cover 15 and the tank bottom plates 1a and 1b, there are grain passages a and b for allowing the grains to flow down toward the spiral body 7, respectively. It is formed. The amount of grain penetration due to the rotation of the spiral body 7 is determined from the relationship between the rotation direction of the spiral body 7 (the direction of the arrow in FIG. 4) and the tank bottom plates 1a and 1b. It is becoming larger than the sides.

Reference numeral 16 is an angled shutter guide that extends from the inside of the lower end of the shutter cover 15 to the grain passages a and b.
In the state where it extends to the side, the tank front/rear side plate 1',
The shutters 8 are fixed to the inner wall surfaces of the grain passages a and b, respectively, and are slidably guided between the guide 16 and the cover 15 to open and close the grain passages a and b.

Reference numeral 17 denotes a partition plate located above the shutter 8 and provided obliquely in the tank 1. As shown in the figure, the partition plate 17 is substantially parallel to the tank bottom plate 1b and is inclined downward toward the grain passage a side of the spiral body 7. The lower end of the slope faces near the top of the shutter cover 15. The inside of the tank 1 is divided into two by this partition plate 17, and the grain storage capacity of each grain passage a side and b side is set. Incidentally, the grain storage capacity of the grain passages a side and b side by the partition plate 17 is set based on the difference in the amount of grain biting into the spiral body 7.
That is, when the spiral body 7 is set to rotate in the direction of the arrow when viewed from the front, as shown in FIG. is supplied, and due to the relationship between the rotational direction (arrow direction) of the spiral body 7 and the shape of the tank bottom plates 1a and 1b, the grain passage a side becomes the raking side where the spiral body 7 rotates from the top to the bottom, so the spiral body The amount of grains that are inserted into the grains 7 is large, and the grain conveyance processing capacity is high. In addition, the grain passage b side has a spiral 7
Since it rotates from the bottom to the top on the non-raking side, the amount of grain biting into the spiral body 7 is small, and the grain conveyance throughput is low. Therefore, as shown in FIG. 9, the transport capacity on the side of the grain passage a is large [Fig. 9 a], and the transport capacity on the side of the grain passage b is small [Fig. 9 b]. Therefore,
The inside of the tank 1 may be divided into two by setting the arrangement position and angle of the partition plate 17 so that the grains on the a side and the b side of each grain passage are finally processed almost simultaneously.

Note that the partition plate 17 may be fixed to the inner wall surface of the tank, or may be configured so that its inclination angle can be adjusted as appropriate.

By the way, the thrower 5 is provided with a safety device B as shown in FIGS. 6 and 7, and this safety device B is a lid body that automatically opens when the internal pressure increases due to a blockage in the thrower 5. 18 and lid body 1
It consists of a limit switch 19 that is turned on when 8 is opened, and a solenoid 20 that is activated when the limit switch 19 is turned on.The operation of the solenoid 20 stops the fuel supply to the engine and cuts off the power transmission to the thrower 5 and the spiral body 7. It is configured. The solenoid 20 may be operated to cut off the power supply (for example, in the case of a gasoline engine) or to disengage a clutch of a power transmission section (not shown) to the thrower.

In Figure 1, 21 is the grain amount confirmation window;
A plurality of confirmation windows 21 are provided on the outer side plate 1 of the tank 1, and the confirmation windows 21 allow the amount of grain entered and the height variation of the upper part of the tank reservoir to be easily checked from the outside. 21' is a scale.

Next, the operation of the present invention will be explained. During operation, grains, such as paddy, threshed in the threshing section 4 are sequentially discharged and stored in the tank 1 from the discharge port 2' via the grain lifting cylinder 2. At this time, the shutter 8 is closed in advance as shown by the phantom line in FIG. 4 to prevent the paddy from flowing into the spiral body 7 side.

As described above, as the amount of paddy in the tank 1 increases, the paddy pressure gradually increases. However, as shown in the figure, the shutter 8 is covered from above with a cover 15 except for both ends (the sides of passages a and b). Furthermore, since the sides of the passages a and b, which are subject to paddy pressure, are received and supported from below by the shutter guide 16, no unreasonable load is applied to the shutter 8, and therefore, the shutter 8 is not deformed by the paddy pressure. Therefore, there is no need to particularly increase the rigidity of the shutter 8, and the shutter 8 can be opened and closed easily.

Now, when the tank 1 becomes full, the reaping operation is temporarily stopped and the paddy in the tank 1 is discharged and transferred to a transport vehicle or the like. At this time, after adjusting the rotation of the thrower 5 so that the distal end outlet of the thrower 5 matches the loading platform of the transport vehicle, the clutch (not shown) is inserted, and the spiral body 8 and the blade 6
If you rotate the , then open the shutter 8,
Since passages a and b are opened, the paddy in tank 1 is
After flowing down to the spiral body 7 side through the passages a and b in the state shown in FIGS. 5 and is ejected into a transport vehicle, etc. At this time, the thrower 5
is equipped with a safety device B, so if the thrower 5 is clogged with grains, etc., the thrower 5
The grains are discharged to a transport vehicle or the like without the grains being damaged or the grains being subjected to abnormal pressure and cracking, thereby reducing the product value.

As mentioned above, by opening the shutter 8 after starting the spiral body 7, etc., the spiral body 7, etc. will not be started with paddy packed around the spiral body 7, so the initial load at the time of startup is small, preventing deformation and damage. There is no risk of it happening.

By the way, since the spiral body 7 rotates in the direction of the arrow shown in FIG.
In relation to a and 1b, the passage a side becomes the raking side of the spiral body 7 and feeds more paddy into the spiral body 7 side than the passage b side, but in this invention, the passage a side is placed above the shutter 8 on the passage a side. A partition plate 17 is provided which is inclined downwardly toward the passage a.
The inside of the tank is divided into two parts with capacities corresponding to the amount of grain sent to the spiral body so that the tank capacity on the side of grain passage B is larger than the tank capacity on the side of passage b. The grains can be finally discharged at almost the same time, and before the final discharge, as shown in the conventional example in Fig. 8, there is a problem with the inefficiency in that the paddy remaining in the shaded area E is fed out only on the path b side where it is poorly penetrated. The wasted time is eliminated, and the capabilities of the spiral body 7 (both passages a,
(b combined feeding capacity) can be maintained in the best condition without decreasing until the discharge is completed,
It is possible to discharge extremely efficiently as calculated.

As mentioned above, the present invention has a spiral body for feeding out grains horizontally suspended in a freely rotatable manner at the bottom of the grain tank, and
In a grain tank provided with a grain passage toward the spiral body and a shutter for opening and closing the grain passage near the upper part of the spiral body, above the shutter, there is a grain passage in relation to the rotational direction of the spiral body and the bottom plate of the tank. A partition plate is provided that is tilted downward toward the grain passage a side where the amount of penetration is large, and the inside of the tank is divided into two by the partition plate, and the tank capacity on the side of the grain passage a is a grain passage where the amount of penetration is small. Since it is configured to have a larger capacity than the tank capacity on the b side, although the structure is extremely simple, the grain delivery efficiency of the spiral body can be maintained at the calculated ideal state until all discharge is completed. It is possible to finish the grain discharge quickly without wasting unnecessary discharge time.
Moreover, the larger the total capacity of the tank, the more remarkable the effect becomes.Therefore, it is easy to increase the capacity of the tank, and there are advantages such as the ability of the partition plate to function as a reinforcing member for the tank.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of a combine equipped with the present invention, Fig. 2 is a front view showing the structure of the shutter operating section A, Fig. 3 is a partially cutaway side view showing the connection structure of the grain tank and the thrower, Figure 4 is a front view of the main parts;
Fig. 5 is a partially cutaway perspective view showing the internal structure of the grain tank, Fig. 6 is a side view showing the installation state of safety device B when the thrower is clogged, Fig. 7 is an electrical circuit diagram of safety device B, Figure 8 is a front view of the conventional example, Figure 9 shows the grain storage capacity of each grain passage of the present invention, and Figure 9a shows the main part showing the grain storage capacity on the grain passage a side. A schematic front view, FIG. 9b is a schematic front view of the main part showing the grain storage capacity on the side of the grain passage b, and FIGS. Schematic front view of main parts showing discharge state, Figure 11a
11(c) to 11(c) are schematic front views of main parts showing the conventional operation of discharging grains from the tank. In the figure, 1 is a grain tank, 7 is a spiral body, 8 is a shutter, 17 is a partition plate, and a and b are grain passages, respectively.

Claims (1)

[Scope of utility model registration request] A grain tank in which a spiral body for feeding out grains is rotatably horizontally suspended at the inner bottom of the grain tank, and a grain passage toward the spiral body and a shutter for opening and closing the grain passage are provided near the top of the spiral body. A partition plate is provided above the shutter and is tilted downward toward the grain passage a side where the amount of grain penetration is large in relation to the rotational direction of the spiral body and the tank bottom plate, and the partition plate allows the interior of the tank to be controlled by the partition plate. A grain tank for a combine harvester or the like, characterized in that it is divided into two parts and configured such that the tank capacity on the side of the grain passage a is larger than the tank capacity on the side of the grain passage b, which has a smaller penetration amount.