JP2005080511A - Device for recovering grain of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the capacity in a grain tank having a structure for mounting or demounting the tank body and even reduce the production cost by utilizing the structure therefor in a device for recovering grains of the combine harvester composed so as to elevate the grains separated and recovered with a threshing device by a screw type elevator stood in the threshing device, charge the grains into the grain tank arranged on the lateral side of the threshing device and carry out the grains stored in the grain tank with an unloading screw arranged in the bottom of the tank and further composed of a base part case fixed by installing the bottom screw and the tank body freely demountably fitted and connected to the base part case from the upper side. <P>SOLUTION: The device is obtained as follows. A bulging part 14 overhanging to the side of the threshing device 6 is formed in the upper part of the tank body 12 and the upper part of the elevator 8 is inserted into an opening 15 formed in the undersurface 14a of the bulging part 14. An unloading port 18 formed at the top of the elevator 8 is opened into the interior of the tank. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a grain recovery device equipped in a combine.

As a combine grain recovery device, the grain selected and recovered by the threshing device is pumped by a screw type threshing device standing on the threshing device and put into a grain tank arranged on the side of the threshing device. In addition, the grain stored in the grain tank is configured to be carried out by a discharge screw arranged at the bottom of the tank, and the grain tank is fixed to the base case with the bottom screw. It consists of a tank body that is detachably fitted and connected from above, and removes the tank body so that the grain tank side of the threshing device is opened widely, thereby performing various maintenance operations on the threshing device side, for example, No. 2 reduction There exists what made it easy to perform cleaning of a device and a cerealing device (for example, refer to patent documents 1).
JP 11-89411 A

  In the above-described conventional structure in which the tank body is detachable, in order to hold the tank body fitted and connected to the base case in an upright posture, the upper end of the cerealing device and the tank body that are erected and fixed to the threshing device In order to connect the two, a buckle type connecting tool is attached to the tank body, which increases the number of parts and the number of assembling steps, resulting in high production cost of the grain tank.

  In the conventional structure, in order to widely diffuse and discharge the grain discharged from the top end of the cerealing device located outside the grain tank into the inside of the grain tank, the top end of the conveying cylinder in the cerealing device is preceded. A discharge case formed in an expanded shape is attached, and a discharge blade larger in diameter than the screw diameter is detachably attached to the upper end of a screw built in the cerealing device, and the tip of the discharge case is attached to the side of the grain tank. In addition to being inserted into the formed opening, a connecting flange provided on the outer periphery of the discharge case is applied to the outer surface of the grain tank, and the processing cost of the discharge part of the cerealing device is high.

  Also, in the combine work, whenever the grain tank is full, the aircraft is brought to the shore and the collected grain is discharged to a transport vehicle such as a truck waiting on the farm road. The smaller the is, the higher the frequency of discharged stored grains and the lower the work efficiency. Therefore, it is desired to increase the tank capacity as much as possible to reduce the number of times the grains collected and stored are discharged.

  The present invention has been made paying attention to such a situation, and aims to increase the capacity of a grain tank having a structure in which a tank body is attached and detached, and to reduce the manufacturing cost by utilizing the structure for that purpose. The purpose is that.

The grain harvesting device for a combine according to the first aspect of the present invention is the grain deployed on the side of the threshing device by lifting the grain selected and collected by the threshing device with a screw-type graining device erected on the threshing device. A base case that is charged into the grain tank, and that the grain stored in the grain tank is carried out by a discharge screw arranged at the bottom of the tank, and the grain tank is fixed by being equipped with the bottom screw; In the combine grain recovery device constituted by the tank body that is detachably fitted and connected to the base case from above,
A bulging portion that protrudes toward the threshing device is formed at the upper portion of the tank body, and the upper portion of the whipping device is inserted into an opening formed on the lower surface of the bulging portion, and the drain formed at the upper end of the threshing device. The outlet is opened in the tank.

  According to the above configuration, the tank capacity increases by the amount of the bulging portion formed in the upper part of the tank body. In addition, by inserting the upper part of the cerealing device into the opening formed in the lower surface of the bulging part, the upper part of the tank body with the lower end fitted and connected to the base case can be supported by the cerealing device. It is possible to omit the connecting tool that connects the grain device and the tank body.

  In addition, since the upper part of the cerealing device is in the tank, a large-diameter discharge blade is attached to the upper end of the screw built in the cerealing device, or a special discharge case is attached to the conveying cylinder of the cerealing device. Even if it is not installed, it can be diffused into the tank simply by attaching a discharge vane with the same diameter as the screw diameter to the upper end of the screw built in the transfer cylinder, and discharging and scattering from the discharge port provided on the upper end side of the transfer cylinder. It becomes.

  Therefore, according to the first invention, by inserting and supporting the cerealing device in the bulging portion of the tank main body, it is possible to eliminate the need for a connecting tool for connecting the cerealing device and the tank main body, and to increase the cerealing device. The structure of the upper end portion can be simplified, the capacity of the grain tank having a structure for detaching the tank body can be increased, and the manufacturing cost can be reduced by utilizing the structure for that purpose.

The grain recovery device for a combine according to the second invention is the first invention,
A discharge blade is provided at an upper end of a screw built in the conveying cylinder of the cerealing device, and the discharge blade is inclined with a twist angle.

  According to the above configuration, by giving an upward twist angle to the discharge blade, even if the diameter of the discharge blade is about the same as the diameter of the screw of the cerealing device, the scattering distance of the grain is increased and it is far from the cerealing device insertion position. It can be scattered enough to the place.

  Therefore, according to 2nd invention, while bringing the said effect of 1st invention, the input and filling of the grain to a tank can be performed reliably, and the grain collection | recovery which fully utilized the increased tank capacity | capacitance is possible. It becomes possible.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a side view of the self-detaching combine as seen from the right side, and FIG. 2 shows a plan view thereof. This combine is connected to a front part of a traveling machine body 2 traveling by a pair of left and right crawler traveling devices 1 so as to be able to move up and down, and a driving part 4 and a driving force are connected to the right front part of the traveling machine body 2. The threshing device 6 is mounted on the left side of the traveling machine body 2 and the grain tank 7 is mounted on the right side thereof, and the cereals harvested by the reaping unit 3 are threshed by the threshing device 6 and selected. The recovered grain is transported by a screw type cerealing device 8 and charged into a grain tank 7, and the stored grain is discharged by a bottom screw 9 provided at the bottom of the tank and a screw type unloader 10. The structure is adopted.

  As shown in FIG. 3, the grain tank 7 is composed of a bottom-contained base case 11 provided with the bottom screw 9, and a tank body 12 fitted and connected to this from above. The bottom end of the vertical loader 10A in the unloader 10 is connected to the rear end of the base case 11, and the bottom screw 9 and a vertical feed screw (not shown) housed in the vertical transfer unit 10A are connected to each other.

  The tank body 12 is resin-molded, and a bulging portion 14 is formed on the upper portion thereof so as to project toward the threshing device 6. The lower surface 14a of the bulging portion 14 is an inclined surface that goes down toward the inside of the tank, and the upper portion of the cerealing device 8 is inserted into the opening 15 formed in the lower surface 14a from below.

  The cerealing device 8 is configured by incorporating a screw 8b for lifting into a cylindrical conveying cylinder 8a, and when the upper part of the conveying cylinder 8a is inserted into the opening 15 of the tank body 12, the bulging portion A backing plate 16 that receives and supports the inclined lower surface 14 a from below is externally fixed to the conveying cylinder 8 a, and a sealing sponge 17 that is pressed against the lower surface 14 a of the bulging portion 14 is formed on the upper surface of the backing plate 16. It is pasted.

  In addition, a discharge port 18 extending in an appropriate circumferential direction is formed on the upper end side surface of the conveying cylinder 8a, and a discharge blade 19 having a vertical width facing the discharge port 18 is fixed to the upper end of the internally mounted screw 8b. ing. The discharge blade 19 is configured to have the same diameter as the screw 8b and is inclined with a twist angle upward with respect to the screw rotation direction, and a large release distance is obtained by scattering and releasing the grains upward. It is supposed to be.

  The tank body 12 is simply inserted and supported by the base case 11 and the cerealing device 8 and can be easily removed upward. During the harvesting operation, the horizontal conveyance unit 10B in the unloader 10 is used as a cradle. The electric telescopic device 21 that swings the horizontal conveyance unit 10B up and down sufficiently approaches the upper surface of the tank body 12 by lowering it to the storage position supported by 20, so that the upward displacement of the tank body 12 is brought into contact. The tank main body 12 is prevented from shifting due to the shaking of the body during the harvesting operation.

  When discharging the grain from the full grain tank 7, the horizontal transport unit 10B of the unloader 10 is arbitrarily swung and swung up and down to move the discharge cylinder 22 at the tip of the horizontal transport unit to the transporting vehicle. However, the expansion and contraction device 21 does not restrict the contact of the tank main body 12, but the airframe is stopped during the discharge operation and does not shake, so there is no restriction on the upward movement. There is no particular problem.

  Note that the discharge cylinder 22 provided at the tip of the lateral transfer unit 10B in the unloader 10 is configured to swing around the lateral fulcrum a and be frictionally held at an arbitrary swinging angle. When loading the grain, the operator changes the discharge angle by changing the swing angle of the discharge cylinder 22 so that the loading position on the transport vehicle can be changed within a certain range without moving the entire unloader. Thus, it is possible to load without any bias. As shown in FIG. 6, a check wire 23 is stretched across the discharge cylinder 22 and the vertical conveyance section 10A, and the horizontal conveyance section 10B is moved upward while the discharge cylinder 22 is swung out and swung toward the distal end side. When the horizontal conveying portion 10B is swung upward beyond the set angle, the check wire 23 is pulled. The discharge cylinder 22 is relatively swung toward the root side and is configured to avoid the occurrence of clogging in the discharge cylinder.

Combine side view Overall plan view of combine Grain tank vertical rear view Longitudinal rear view of a grain tank showing the separation state Perspective view of cerealing device Side view of unloader

Explanation of symbols

6 Threshing device 7 Grain tank 8 Grain raising device 8a Carrying cylinder 8b Screw 14 Swelling portion 14a Lower surface 15 Opening 18 Ejection port 19 Ejection blade

Claims (2)

Grain selected and recovered by the threshing device is pumped by a screw-type threshing device installed on the threshing device, put into the grain tank deployed on the side of the threshing device, and stored in the grain tank The grain tank is configured to be carried out by a discharge screw provided at the bottom of the tank, and the grain tank is fitted and connected to the base case so as to be detachable from above from the base case fixed with the bottom screw. In the combine grain recovery device composed of the tank body,
A bulging portion that protrudes toward the threshing device is formed at the upper portion of the tank body, and the upper portion of the whipping device is inserted into an opening formed on the lower surface of the bulging portion, and the drain formed at the upper end of the threshing device. A combine grain recovery device having an outlet opening in the tank.   The combine grain recovery device according to claim 1, wherein a discharge blade is provided at an upper end of a screw built in a conveying cylinder of the cerealing device, and the discharge blade is inclined with a twist angle.

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