JP7112955B2 - harvester - Google Patents

Description

The present invention relates to a harvester such as a combine.

In a combine harvester, which is an example of a harvesting machine, the base of the stalk planted in a field is cut by a reaping device, and the cut stalk is conveyed from the reaping device to a threshing device, and the stalk is removed by the threshing device. are threshed and the grains that are free from the culms are collected in grain tanks.

JP 2018-99047 A

In this type of harvester, an opening is formed in the wall surface of the grain tank in order to enable maintenance work to remove the grain remaining on the inner surface of the grain tank and the dust adhering to the inner surface of the grain tank. It is preferable that the opening can be opened and closed.

For example, in a structure in which an opening that can be opened and closed by a lid is formed on the upper surface of the grain tank, maintenance work is performed through the opening from above the grain tank. It is difficult to perform maintenance work from above the grain tank.

Therefore, it is conceivable to configure a portion of the side wall of the grain tank as an openable/closable wall portion so that it can be opened and closed. With this configuration, maintenance work can be performed through the opening formed by opening the opening/closing wall portion from the side of the grain tank, so maintenance work can be easily performed even if the grain tank is large. There is

However, when a large amount of grains are stored in the grain tank, a large amount of pressure is applied to the side wall, which deforms the opening/closing wall and causes a gap between the lower end of the opening/closing wall and the lower edge of the opening. If there is a gap between them, the grain will spill out through the gap.

In order to solve this problem, the applicant of the present application has provided a locking rod that can move back and forth in the vertical direction on the inner surface of the opening/closing wall, and operates an operation lever arranged on the outer surface of the opening/closing wall while the opening/closing wall is closed. As a result, the locking rod advances downward, and the lower end of the locking rod slides on a guide holding member provided in the grain tank, thereby guiding the inside of the grain tank. is doing. By guiding the lower end of the locking rod to the inside of the grain tank, the opening/closing wall portion is drawn to the inside of the grain tank, and the lower end portion of the opening/closing wall portion is provided along the lower edge of the opening. Adhere to the sealing member. As a result, it is possible to prevent the grains from spilling out from between the lower end of the opening/closing wall and the lower edge of the opening.

However, if the operating lever is operated while the opening/closing wall portion is being opened/closed, the lower end portion of the locking rod may interfere with the seal member and damage the seal member.

SUMMARY OF THE INVENTION An object of the present invention is to provide a harvester capable of suppressing damage to a sealing member caused by a locking member.

In order to achieve the above object, a harvesting machine according to the present invention is a harvesting machine comprising a tank capable of accommodating harvested material, wherein one side wall of the tank is provided with an openable/closable wall formed of at least a part of the tank in a vertical direction. A seal that can be opened and closed by rotating about an axis extending in the direction of the opening, and is in close contact with the opening and closing wall when the opening and closing wall is closed along the lower edge of the opening formed when the opening and closing wall is opened. A member is provided, and an operation member is provided on the outer surface of the opening/closing wall portion so as to be operable between the open position and the closed position. The locking member is movably provided, and when the operation member is operated to the open position, the locking member is positioned at the unlocking position, and the lower end of the locking member is disposed above the lower edge of the opening, When the operation member is operated to the closed position, the locking member is positioned at the locking position and the lower end of the locking member is arranged below the lower edge of the opening, A locked portion is provided in the tank for locking the lower end of the locking member at the locked position by sliding the lower end of the locking member that descends from the unlocked position to the locked position. The upper end of the engaging portion wraps around the upper side of the sealing member.

According to this configuration, the opening is formed when the opening/closing wall portion of the tank is opened. As a result, the inside of the tank can be accessed through the opening, and maintenance work such as cleaning of the inside of the tank can be performed.

A sealing member is provided along the lower edge of the opening. When the opening/closing wall portion is closed, the opening/closing wall portion comes into close contact with the sealing member. Therefore, even if the opening/closing wall part is slightly deformed such that the opening/closing wall part bulges due to the pressure inside the tank, the elasticity of the sealing member ensures the tight contact between the opening/closing wall part and the sealing member. Therefore, it is possible to prevent the harvest stored in the tank from spilling out from between the opening/closing wall portion and the lower edge of the opening.

Further, in a state in which the opening/closing wall portion is closed, the operation member is operated to the closed position and the locking member is arranged at the locking position, whereby the lower end portion of the locking member is locked to the locked portion. Therefore, even if the opening/closing wall part is slightly deformed such that the opening/closing wall part bulges due to the pressure in the tank, the formation of a gap between the opening/closing wall part and the lower edge of the opening is suppressed. Therefore, it is possible to further prevent the harvest stored in the tank from spilling out from between the opening/closing wall portion and the lower edge of the opening.

Since the upper end of the locked portion wraps around the upper side of the seal member, the operating member is operated from the open position to the closed position during the opening and closing of the opening/closing wall portion, and the locking member is unlocked. Even if it moves from the position to the locking position, it is possible to prevent the locking member from interfering with the sealing member, and to prevent the locking member from damaging the sealing member.

A canopy portion may be provided at the lower end of the opening/closing wall portion to be arranged above the sealing member when the opening/closing wall portion is closed. As a result, the abutment portion between the opening/closing wall portion and the seal member is hidden under the eaves portion, so that harvested products such as grains are prevented from being lined up and caught in the abutment portion. Therefore, when the opening/closing wall portion is opened, it is possible to prevent the harvested product from spilling out of the tank into a field or the like in streaks.

The canopy portion may extend to a position downstream of the seal member in the direction from the opening/closing wall portion toward the inside of the tank when the opening/closing wall portion is closed. As a result, it is possible to effectively prevent the harvested products from being lined up and caught in the contact portion between the opening/closing wall portion and the seal member, and when the opening/closing wall portion is opened, the harvested products are streaked from the inside of the tank to the field or the like. Spilling down can be suppressed satisfactorily.

The eaves extend along the lower end of the opening/closing wall and are divided in the middle in the longitudinal direction. may be placed in As a result, while avoiding interference between the locked portion and the eaves portion, the locked portion acts as a wall, and the harvested product in the tank exerts a high pressure on the contact portion between the opening/closing wall portion and the seal member. can be suppressed.

The eaves may be formed separately from the opening/closing wall and attached to the opening/closing wall using fasteners. In this case, since the eaves do not have to be formed integrally with the opening/closing wall, an increase in the manufacturing cost of the opening/closing wall can be suppressed. In addition, by attaching the eaves to the opening/closing wall with fasteners, the attachment strength of the eaves can be increased compared to a configuration in which the eaves are attached to the opening/closing wall with an adhesive or double-sided tape. It is possible to reduce the concern that the eaves portion may fall off inside.

According to the present invention, it is possible to prevent the lower end portion of the locking member from interfering with the sealing member, and to prevent damage to the sealing member.

It is a right view of the machine body of the combine which concerns on one Embodiment of this invention. It is a top view of an airframe. It is a left view which shows the internal structure of a grain tank. Fig. 3 is a perspective view showing the configuration inside the boundary portion between the fixed wall portion and the opening/closing wall portion of the grain tank; FIG. 4 is a perspective view showing a main part of the inner structure of the fixed wall; FIG. 4 is a perspective view showing the configuration inside the opening/closing wall; FIG. 4 is a perspective view showing the inner configuration of the lower end of the opening/closing wall;

BEST MODE FOR CARRYING OUT THE INVENTION Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Combination machine configuration>
FIG. 1 is a right side view of a body 2 of a combine harvester 1 according to one embodiment of the present invention. FIG. 2 is a plan view of the airframe 2. FIG.

The combine 1 is an example of a harvester that reaps grain stalks and threshes grains from the stalks while traveling in a field. A machine body 2 of the combine harvester 1 includes a main frame 3 which is a structure in which steel materials are combined. The main frame 3 supports a cabin 4, a grain tank 5, and the like.

Although not shown, the body 2 is supported by a pair of left and right travel devices. For the traveling device, for example, a crawler having a high rough terrain traveling ability is adopted so that the combine 1 can travel in the field.

The cabin 4 is arranged on the front end of the main frame 3 . The cabin 4 provides a space for a driver to ride in, and in the space, for example, a driver's seat in which the driver sits and operation members such as operation levers and operation pedals are arranged. A door 11 is provided on the right side of the cabin 4 as shown in FIG. The door 11 is supported by two hinges 12 attached to its rear end so that it can be opened and closed. A driver can open the door 11 and get into the cabin 4 .

A grain tank 5 is arranged behind the cabin 4 on the main frame 3 . The grain tank 5 stores the grains threshed from the culms by the threshing device. A right side wall forming a right side surface of the grain tank 5 includes a fixed wall portion 13 and an opening/closing wall portion 14 above the fixed wall portion 13 . The fixed wall portion 13 is fixedly provided with respect to the main frame 3 . The opening/closing wall portion 14 is provided so as to be openable/closable about a rotation axis extending vertically along the rear edge. When the opening/closing wall portion 14 is opened, the right side surface of the grain tank 5 is largely opened while leaving the fixed wall portion 13 . Thereby, when maintenance is performed inside the grain tank 5, a maintenance worker can easily enter the grain tank 5 through the wide open opening.

In addition, the grain tank 5 is configured so that the entire grain tank 5 can be deployed to the right side about an axis extending in the vertical direction at the right rear end portion. As a result, the maintenance worker can deploy the entire grain tank 5 to the right side to easily maintain the equipment arranged between the cabin 4 and the grain tank 5 .

<Internal configuration of the grain tank>
FIG. 3 is a left side view showing the internal configuration of the grain tank 5. As shown in FIG. FIG. 4 is a perspective view showing the inner configuration of the boundary portion between the fixed wall portion 13 and the opening/closing wall portion 14 of the grain tank 5. As shown in FIG. FIG. 5 is a perspective view showing the essential parts of the inner configuration of the fixed wall portion 13. As shown in FIG.

As shown in FIGS. 4 and 5, the fixed wall portion 13 of the grain tank 5 is provided with a weather strip 21, which is a strip-shaped sealing member, along the upper edge thereof. When the opening/closing wall portion 14 is closed, the lower end portion of the opening/closing wall portion 14 is pressed against the weatherstrip 21 from the right side. As a result, the weatherstripping 21 is elastically deformed, and the elastic force of the weatherstripping 21 brings the weatherstripping 21 into close contact with the opening/closing wall portion 14, so that the upper end portion of the fixed wall portion 13 and the lower end portion of the opening/closing wall portion 14 are liquid-tight. is sealed to

Lock receiving metal fittings 22 are attached to the inner surface of the fixed wall portion 13, for example, at the front end portion and the central portion in the front-rear direction. The lock receiving metal fitting 22 integrally includes a flat plate portion 23 having a substantially trapezoidal shape when viewed from the side, and a curved portion 24 extending rightward while convexly curving upward from the upper portion of the flat plate portion 23 . The lock receiving metal fitting 22 is fastened to the fixed wall portion 13 with, for example, two bolts 26 with a spacer 25 interposed between the inner surface of the fixed wall portion 13 and the flat plate portion 23 . The curved portion 24 of the lock receiving metal fitting 22 wraps around the weatherstrip 21 .

FIG. 6 is a perspective view showing the inner configuration of the opening/closing wall portion 14. As shown in FIG.

Two lock pins 31 are provided on the inner surface of the opening/closing wall portion 14 . The lock pin 31 is a rod-shaped (round bar-shaped) member. Two pin holders 32 are provided on the inner surface of the opening/closing wall portion 14 . The pin holder 32 is formed by bending or bending a sheet metal into a substantially U shape when viewed from above, and is fixed to the inner surface of the opening/closing wall portion 14 by welding. The pin holder 32 is arranged corresponding to the two lock receiving metal fittings 22 in the grain tank 5 so as to be at the same position in the longitudinal direction as the lock receiving metal fittings 22 when the opening/closing wall portion 14 is closed. . The lock pin 31 is inserted through the pin holder 32 and extends vertically.

A link mechanism 33 is connected to the lock pin 31 . The opening/closing wall portion 14 is provided with a lock handle 34 as shown in FIG. The lock handle 34 is arranged on the far side of an opening 35 formed in the opening/closing wall portion 14 . The link mechanism 33 is a mechanism that synchronously moves the two lock pins 31 up and down by operating the lock handle 34 .

The link mechanism 33 includes a rotating shaft 41 extending in the front-rear direction, two rocking plates 42 supported by the rotating shaft 41 so as not to rotate relative to each other, and relatively rotatably connected to the lower ends of the rocking plates 42 . and a link arm 43 which is connected to the The rotating shaft 41 is connected to the lock handle 34, and when the lock handle 34 is rotated between a closed position extending in the vertical direction and an open position lying down to the right from the closed position, the rotation shaft 41 is rotated. , the rotating shaft 41 rotates around the center line. Each link arm 43 extends downward from the rocking plate 42 and has its lower end connected to the upper end of the lock pin 31 so as to be relatively rotatable.

When the lock handle 34 is operated from the closed position to the open position, the lower end of each rocking plate 42 is lifted with the rotation of the rotating shaft 41, and each link arm 43 is lifted. rises. With the lock handle 34 operated to the open position, the lock pin 31 is positioned at the uppermost unlocked position. When the lock pin 31 is positioned at the unlocked position, the lower end of the lock pin 31 is arranged above the upper edge of the fixed wall portion 13 (the lower edge of the opening) in the vertical direction.

On the other hand, when the lock handle 34 is operated from the open position to the closed position, the lower ends of the rocking plates 42 are lowered as the rotating shafts 41 are rotated, and the link arms 43 are lowered to move the locks. Pin 31 descends. With the lock handle 34 operated to the closed position, the lock pin 31 is positioned at the lowest locking position. When the lock pin 31 is positioned at the locking position, the lower end of the lock pin 31 is arranged below the upper edge of the fixed wall portion 13 (lower edge of the opening) in the vertical direction.

The lower end of the lock pin 31 abuts on the curved portion 24 of the lock receiving metal fitting 22 while the lock pin 31 descends from the unlocked position to the locked position. When the lock pin 31 descends further, the lower end of the lock pin 31 slides against the curved portion 24 of the lock receiving metal fitting 22 . Due to the bending of the curved portion 24 , the lower end of the lock pin 31 receives force directed toward the inside of the grain tank 5 . Due to this force, the opening/closing wall portion 14 is drawn toward the inside of the grain tank 5, and the lower end portion of the opening/closing wall portion 14 is pressed against the weatherstrip 21 from the right side.

FIG. 7 is a perspective view showing the inner configuration of the lower end portion of the opening/closing wall portion 14. As shown in FIG. 7, illustration of the lock pin 31 and the pin holder 32 is omitted.

Two eaves 51 are provided at the lower end of the inner surface of the opening/closing wall 14 . The eaves portion 51 is formed by bending a sheet metal, and includes an inclined portion 52 inclined toward the inside (left side) of the grain tank 5 and an inclined portion 52 folded back toward the inner surface side (right side) of the opening/closing wall portion 14 . It is integrally provided with an extension portion 53 that extends along the length of the shaft. The eaves portion 51 extends in the front-rear direction and is fastened to the opening/closing wall portion 14 with three bolts 54 in a state in which the extension portion 53 is in contact with the inner surface of the opening/closing wall portion 14 .

The two eaves 51 are arranged in the front-rear direction, and a space is provided between them so that the lock receiving metal fitting 22 and the pin holder 32 can be arranged.

When the opening/closing wall portion 14 is closed, as shown in FIG. also extends to the inside (left side) of the grain tank 5 . Further, when the opening/closing wall portion 14 is closed, the curved portion 24 of the lock receiving metal fitting 22 enters between the two eaves portions 51 and wraps around to the upper side of the weatherstripping 21 .

<Effect>
As described above, when the opening/closing wall portion 14 of the grain tank 5 is opened, an opening is formed. Thereby, the inside of the grain tank 5 can be accessed through the opening, and maintenance work such as cleaning work inside the grain tank 5 can be performed.

A weather strip 21 is provided along the lower edge of the opening, that is, the upper edge of the fixed wall portion 13 . When the opening/closing wall portion 14 is closed, the opening/closing wall portion 14 is brought into close contact with the weather strip 21 . Therefore, even if the opening/closing wall portion 14 is slightly deformed such that the pressure inside the grain tank 5 causes the opening/closing wall portion 14 to bulge out, the elasticity of the weatherstripping 21 ensures close contact between the opening/closing wall portion 14 and the weatherstripping 21 . Therefore, it is possible to prevent the grains stored in the grain tank 5 from spilling out from between the opening/closing wall portion 14 and the upper edge of the fixed wall portion 13 .

In addition, when the lock handle 34 is operated to the closed position while the opening/closing wall portion 14 is closed, the lock pin 31 is arranged at the locking position, so that the lower end portion of the lock pin 31 is attached to the lock receiving metal fitting 22 . Since it is locked, even if the opening/closing wall portion 14 is slightly deformed such that the opening/closing wall portion 14 bulges due to the pressure inside the grain tank 5, a gap may occur between the opening/closing wall portion 14 and the upper end edge of the fixed wall portion 13. Suppressed. Therefore, it is possible to further prevent the grains stored in the grain tank 5 from spilling out from between the opening/closing wall portion 14 and the upper edge of the fixed wall portion 13 .

Since the upper end of the lock receiving metal fitting 22 wraps around the upper side of the weather strip 21, the lock handle 34 is operated from the open position to the closed position in the middle of opening and closing the opening/closing wall portion 14, and the lock pin 31 is released. Even if it moves from the unlocked position to the locked position, the lower end of the lock pin 31 can be prevented from interfering with the weatherstrip 21, and the risk of damage to the weatherstrip 21 can be reduced.

A canopy portion 51 is provided at the lower end portion of the opening/closing wall portion 14 so as to be arranged above the weatherstripping 21 when the opening/closing wall portion 14 is closed. As a result, the abutting portion between the opening/closing wall portion 14 and the weatherstrip 21 is hidden under the eaves portion 51, so grains such as grains are prevented from being lined up and caught in the abutting portion. Therefore, when the opening/closing wall portion 14 is opened, it is possible to prevent the grains from spilling out of the grain tank 5 into a field or the like in a streaky manner.

The eaves portion 51 extends to a position downstream of the weatherstrip 21 in the direction from the opening/closing wall portion 14 toward the inside of the grain tank 5 when the opening/closing wall portion 14 is closed. As a result, it is possible to effectively prevent the grains from being lined up and caught in the contact portion between the opening/closing wall portion 14 and the weatherstrip 21. It is possible to satisfactorily prevent grains from falling off in streaks.

Two eaves portions 51 are provided side by side, extend along the lower end portion of the opening/closing wall portion 14, and are divided in the middle in the longitudinal direction. The lock receiving metal fitting 22 is arranged in the divided portion of the eaves portion 51 when the opening/closing wall portion 14 is closed. As a result, while avoiding interference between the lock receiving metal fitting 22 and the overhanging portion 51, the lock receiving metal fitting 22 acts as a wall, and grains in the grain tank 5 are separated from the opening/closing wall portion 14 and the weatherstrip 21. It is possible to suppress biting into the contact portion with high pressure.

The eaves portion 51 may be formed separately from the opening/closing wall portion 14 and attached to the opening/closing wall portion 14 using bolts 54 . In this case, since the eaves portion 51 does not need to be formed integrally with the opening/closing wall portion 14, an increase in the manufacturing cost of the opening/closing wall portion 14 can be suppressed. In addition, by attaching the eaves portion 51 to the opening/closing wall portion 14 with the bolts 54, the mounting strength of the eaves portion 51 is increased compared to the configuration in which the eaves portion 51 is attached to the opening/closing wall portion 14 with an adhesive or double-sided tape. It is possible to reduce the concern that the eaves part 51 may come off inside the grain tank 5 .

<Modification>
Although the embodiments of the present invention have been described above, the present invention can also be implemented in other forms.

For example, the combine 1 is taken up as an example of a harvester, but the present invention is not limited to the combine 1, and can be applied to a harvester for harvesting vegetables such as carrots, radishes, green soybeans, and cabbages.

In addition, various design changes can be made to the above configuration within the scope of the matters described in the claims.

1: Combine (harvesting machine)
5: grain tank (tank)
13: Fixed wall portion 14: Opening/closing wall portion 21: Weather strip (sealing member)
22: Lock receiving metal fitting (locked part)
31: Lock pin (locking member)
34: Lock handle (operating member)
51: eaves part 54: bolt (fastener)

Claims (5)

A harvester comprising a tank capable of containing harvested material,
An opening/closing wall portion consisting of at least a part of one side wall portion of the tank is configured to be openable and closable by rotation about an axis extending in the vertical direction,
A sealing member is provided along the lower edge of the opening formed when the opening/closing wall is opened, and is in close contact with the opening/closing wall when the opening/closing wall is closed,
An operation member is provided on the outer surface of the opening/closing wall so as to be operable between an open position and a closed position,
A rod-shaped locking member extending in the vertical direction is provided on the inner surface of the opening/closing wall portion so as to be capable of reciprocating in the vertical direction.
In a state in which the operating member is operated to the open position, the locking member is positioned at the unlocking position, the lower end of the locking member is arranged above the lower edge of the opening, and the operating member is positioned above the lower edge of the opening. When the member is operated to the closed position, the locking member is positioned at the locking position and the lower end of the locking member is arranged below the lower edge of the opening. and
A lower end portion of the locking member descending from the unlocking position to the locking position slides in the tank, and the locked member locks the lower end portion of the locking member at the locking position. Department is established,
The harvester, wherein an upper end portion of the locked portion wraps around the upper side of the sealing member. 2. The harvester according to claim 1, wherein the lower end of the opening/closing wall is provided with a canopy portion arranged above the sealing member when the opening/closing wall is closed. The harvester according to claim 2, wherein the eaves extend to a position inside the tank from the seal member when the opening/closing wall is closed. The eave portion extends along the lower end portion of the opening/closing wall portion and is divided in the middle in the longitudinal direction,
4. The harvester according to claim 3, wherein the locked portion is arranged in the divided portion of the eaves portion in a state where the opening/closing wall portion is closed. The harvester according to any one of claims 2 to 4, wherein the eaves are formed separately from the opening/closing wall and attached to the opening/closing wall using fasteners.

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