CN111373924A

CN111373924A - Harvester

Info

Publication number: CN111373924A
Application number: CN201911376481.5A
Authority: CN
Inventors: 田中智德; 汤本孔明; 池田太
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2018-12-28
Filing date: 2019-12-27
Publication date: 2020-07-07
Anticipated expiration: 2039-12-27
Also published as: KR20200083242A; CN111373924B

Abstract

The invention provides a harvester, which can inhibit harvested materials such as grains from being scattered in a stripe shape when the side surface of a grain box is open. A weather strip (21) is provided along the upper end edge of the fixed wall portion (13). When the opening/closing wall portion (14) is closed, the opening/closing wall portion (14) is in close contact with the weather strip (21). A brim (51) disposed above the weather strip (21) in a state where the opening/closing wall (14) is closed is provided at the lower end of the opening/closing wall (14). Thus, the contact part between the opening/closing wall part (14) and the weather strip (21) is hidden under the brim part (51).

Description

Harvester

Technical Field

The invention relates to a combine harvester and other harvesters.

Background

In the first aspect, in a combine harvester as an example of the harvester, roots of grain stalks standing upright in a field are harvested by a harvesting device, the harvested grain stalks are transported from the harvesting device to a threshing device, the grain stalks are threshed by the threshing device, and grains fallen off from the grain stalks are collected in a grain box.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-99047

Problems to be solved by the invention

In such a harvester, in order to perform maintenance work for removing grains remaining on the inner surface of the grain tank and dust adhering to the inner surface thereof, it is preferable that an opening be formed in a wall surface of the grain tank so as to be openable and closable.

For example, in a configuration in which an opening that can be opened and closed by a lid is formed in the upper surface of the grain tank, maintenance work is performed from above the grain tank through the opening, but in a case where the grain tank is large, it is difficult to perform maintenance work from above the grain tank.

Therefore, it is conceivable to configure a part of the side wall of the grain box to be openable and closable as an opening and closing wall portion. In this configuration, since the maintenance operation can be performed by opening the opening/closing wall portion from the side of the grain tank, the maintenance operation can be easily performed even if the grain tank is large.

However, when the opening/closing wall is opened, grains such as rice grains attached to the inner surface of the side wall may be scattered to the outside of the grain box. In particular, when grains are sandwiched between the lower end edge of the opening/closing wall portion and the lower end edge of the opening in parallel, when the opening/closing wall portion is opened, the grains may be scattered in a striped pattern in a field or the like, giving an impression that a large amount of grains are scattered to a purchaser or a user of the harvester.

In a second aspect, in a combine harvester, which is an example of a harvester, roots of grain stalks standing in a field are harvested by a harvesting device, the harvested grain stalks are transported from the harvesting device to a threshing device, the grain stalks are threshed by the threshing device, and grains that have fallen off from the grain stalks are collected in a grain bin.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-99047

Problems to be solved by the invention

However, in a state where a large amount of grains are stored in the grain box, since a large pressure is applied to the side wall, the opening/closing wall portion is deformed by the pressure, and when a gap is generated between the lower end portion of the opening/closing wall portion and the lower end edge of the opening, the grains overflow from the gap.

In view of this problem, the applicant of the present invention proposes the following structure: the inner surface of the opening and closing wall part is provided with a locking rod capable of moving back and forth in the vertical direction, the operating rod arranged on the outer surface of the opening and closing wall part is operated in the state that the opening and closing wall part is closed, so that the locking rod enters downwards, and the lower end part of the locking rod slides on a guide and holding part arranged in the grain box and is guided to the inner side of the grain box. The lower end of the locking rod is guided to the inner side of the grain box, so that the opening and closing wall part is drawn to the inner side of the grain box, and the lower end of the opening and closing wall part is closely attached to a sealing part arranged along the lower end edge of the opening. This can prevent the grains from overflowing between the lower end of the opening/closing wall and the lower edge of the opening.

However, if the operating lever is operated during opening and closing of the opening and closing wall portion, the lower end portion of the locking lever may interfere with the seal member and damage the seal member.

In the third aspect, for example, in a combine harvester, roots of grain stalks standing in a field are harvested by a harvesting device, the harvested grain stalks are transported from the harvesting device to a threshing device, the grain stalks are threshed by the threshing device, and the grains are collected in a grain bin.

A cab accommodating operation members such as a driver's seat, an operation lever, and an operation pedal is supported at a front end portion of a frame of the combine harvester. A driver of the combine can ride in the cab and sit on the driver seat to perform various operations such as traveling and steering of the combine. The grain box is arranged behind the cab on the frame. Between the cab and the grain tank is a housing room, and a condenser of an air conditioner for air conditioning in the cab, a condenser fan attached to the condenser, and the like are disposed.

Prior art documents

Patent document

Patent document 2: japanese patent laid-open publication No. 2015-19596

Problems to be solved by the invention

In the air conditioner, a semi-liquid refrigerant compressed by a compressor is supplied to a condenser, and the refrigerant is cooled and liquefied by the condenser. By driving the condenser fan, wind passes through the condenser, thereby promoting cooling of the refrigerant in the condenser.

However, depending on the arrangement of the condenser and the like, high-temperature air after heat exchange in the condenser may be discharged from the housing chamber to the outside and then may be circulated around the air inlet of the housing chamber, and the air passing through the condenser may form a loop, thereby failing to obtain sufficient performance of the air conditioner (air conditioning performance).

Disclosure of Invention

A first aspect of the present invention is to provide a harvester that can suppress streaked scattering of harvested material such as grain when a side surface of a grain box is open.

Means for solving the problems

In order to achieve the above object, a harvester according to the present invention includes a tank capable of storing harvested material, wherein an opening/closing wall portion formed of at least a part of a side wall portion of the tank is configured to be opened/closed by rotation about an axis extending in a vertical direction, a seal member is provided along a lower end edge of an opening formed when the opening/closing wall portion is opened, the seal member being in close contact with the opening/closing wall portion in a state where the opening/closing wall portion is closed, and a brim portion is provided at a lower end portion of the opening/closing wall portion, the brim portion being disposed above the seal member in a state where the opening/closing wall portion is closed.

According to this structure, when the opening/closing wall portion of the case is opened, the opening is formed. Thus, the inside of the tank can be reached through the opening, and maintenance work such as cleaning work of the inside of the tank can be performed.

A sealing member is provided along the lower end edge of the opening. When the opening/closing wall portion is closed, the opening/closing wall portion is in close contact with the sealing member. Therefore, even if the opening/closing wall portion is slightly deformed so as to bulge due to the pressure in the tank, the close contact between the opening/closing wall portion and the seal member can be ensured by the elasticity of the seal member. Therefore, the harvested material stored in the box can be suppressed from overflowing between the opening-closing wall portion and the lower end edge of the opening.

Further, a brim is provided at a lower end of the opening/closing wall, and the brim is disposed above the sealing member when the opening/closing wall is closed. Thus, the contact portion between the opening/closing wall and the sealing member is hidden under the eaves, and the harvested material such as grains can be prevented from being caught in the contact portion. Therefore, when the opening/closing wall portion is opened, the harvested material can be prevented from being scattered in a stripe shape from the inside of the box to a field or the like.

The brim portion may extend to a position downstream of the sealing member in a direction from the opening/closing wall portion toward the inside of the box in a state where the opening/closing wall portion is closed. This effectively prevents the harvested material from being caught in the contact portion between the opening/closing wall portion and the sealing member, and when the opening/closing wall portion is opened, the harvested material can be prevented from being scattered in a stripe pattern from the inside of the box to a field or the like.

In the above-described configuration, the opening/closing wall portion may be provided on an inner surface thereof with a rod-shaped locking member extending in the vertical direction so as to be capable of reciprocating in the vertical direction between a non-locking position and a locking position, the locking member may be disposed such that a lower end thereof is located above a lower end edge of the opening in a state where the locking member is located at the non-locking position, the locking member may be disposed such that the lower end thereof is located below the lower end edge of the opening in a state where the locking member is located at the locking position, and the box may be provided with a locked portion in which the lower end of the locking member that descends from the non-locking position to the locking position slides to lock the lower end of the locking member at the locking position.

According to this configuration, since the locking member is disposed at the locking position in a state where the opening/closing wall portion is closed, and the lower end portion of the locking member is locked to the locked portion, even if the opening/closing wall portion is slightly deformed so as to bulge out due to the pressure in the box, it is possible to suppress the generation of a gap between the opening/closing wall portion and the lower end edge of the opening. Therefore, the harvested material stored in the box can be further suppressed from overflowing between the opening/closing wall portion and the lower end edge of the opening.

The eaves portion may extend along a lower end portion of the opening/closing wall portion, and be divided at a middle portion in a longitudinal direction thereof, and the engaged portion may be disposed at the divided portion of the eaves portion in a state where the opening/closing wall portion is closed. Thus, interference between the engaged portion and the brim portion can be avoided, and the engaged portion serves as a wall, so that intrusion of the harvested material in the box into a contact portion between the opening/closing wall portion and the sealing member due to high pressure can be suppressed.

The engaged portion preferably has an upper end portion extending above the seal member. Thus, even if the locking member moves from the non-locking position to the locking position during the opening and closing of the opening and closing wall portion, interference between the locking member and the sealing member can be suppressed, and damage to the sealing member by the locking member can be suppressed.

The eaves may be formed integrally with the opening/closing wall portion and attached to the opening/closing wall portion using fasteners. In this case, since the brim portion and the opening/closing wall portion do not need to be formed integrally, an increase in the manufacturing cost of the opening/closing wall portion can be suppressed. Further, by attaching the brim to the opening/closing wall portion with the fastener, the attaching strength of the brim can be increased and the fear of the brim falling off in the box can be reduced as compared with a structure in which the brim is attached to the opening/closing wall portion with an adhesive or a double-sided tape.

Effects of the invention

According to the present invention, when the side surface of the grain tank is open, the grain or other harvest can be prevented from spilling in a striped pattern, and therefore, the impression of a large amount of grain spilling to the purchaser or user of the harvester can be prevented.

A second aspect of the present invention is to provide a harvester in which damage to a seal member by a locking member can be suppressed.

Means for solving the problems

In order to achieve the above object, a harvester according to the present invention includes a tank capable of storing harvested material, wherein an opening/closing wall portion formed of at least a part of the opening/closing wall portion is configured to be opened/closed by rotation about an axis extending in a vertical direction, a seal member is provided along a lower end edge of an opening formed when the opening/closing wall portion is opened, the seal member being in close contact with the opening/closing wall portion in a state where the opening/closing wall portion is closed, an operating member is provided on an outer surface of the opening/closing wall portion so as to be operable to an open position and a closed position, a rod-shaped locking member extending in the vertical direction is provided on an inner surface of the opening/closing wall portion so as to be capable of reciprocating in the vertical direction, the locking member is located at a non-locking position in a state where the operating member is operated to the open position, and a lower end of the locking member is disposed, when the operating member is operated to the closed position, the locking member is located at the locking position, the lower end of the locking member is arranged at a position lower than the lower end edge of the opening, and a locked portion is provided in the box, the locked portion allowing the lower end of the locking member to slide from the non-locking position to the locking position and locking the lower end of the locking member at the locking position, and the upper end of the locked portion being wound around the upper side of the sealing member.

Further, in a state where the opening/closing wall portion is closed, the operating member is operated to the closed position so that the locking member is disposed at the locking position, and the lower end portion of the locking member is locked to the portion to be locked, and therefore, even if the opening/closing wall portion is slightly deformed so as to bulge out due to the pressure in the tank, it is possible to suppress the generation of a gap between the opening/closing wall portion and the lower end edge of the opening. Therefore, the harvested material stored in the box can be further suppressed from overflowing between the opening/closing wall portion and the lower end edge of the opening.

Further, since the upper end portion of the engaged portion is wound around the upper side of the seal member, even if the operating member is operated from the open position to the closed position and the locking member is moved from the non-locking position to the locking position in the middle of opening and closing of the opening and closing wall portion, interference between the locking member and the seal member can be suppressed, and damage of the seal member by the locking member can be suppressed.

The lower end of the opening/closing wall portion may be provided with a brim portion disposed above the sealing member in a state where the opening/closing wall portion is closed. Thus, the contact portion between the opening/closing wall and the sealing member is hidden under the eaves, and the harvested material such as grains can be prevented from being caught in the contact portion. Therefore, when the opening/closing wall portion is opened, the harvested material can be prevented from being scattered in a stripe shape from the inside of the box to a field or the like.

Effects of the invention

According to the present invention, interference between the lower end portion of the locking member and the seal member can be suppressed, and damage to the seal member can be suppressed.

A third aspect of the present invention is directed to a harvester that can improve the cooling efficiency of a refrigerant by a condenser.

Means for solving the problems

In order to achieve the above object, a harvester of the present invention includes: a cab that provides a space for a driver to ride on; a tank disposed behind the cab and configured to accommodate harvested material; a condenser disposed between the cab and the tank, and configured to cool the refrigerant; a condenser fan disposed along the condenser to allow wind to pass through the condenser; and a cover that is provided at one end in the width direction between the cab and the box and blocks the flow of wind from between the cab and the box to the outside.

According to this configuration, the condenser and the condenser fan for passing wind through the condenser are disposed between the cab and the tank disposed at the rear side thereof. Further, a cover that blocks the wind from being discharged to the outside from between the cab and the box is provided at one end in the width direction between the cab and the box. Therefore, the wind passing through the condenser can be prevented from being discharged to the outside from between the cab and the tank and then bypassing between the cab and the tank. As a result, the air passing through the condenser can be prevented from forming a loop, and the cooling efficiency of the refrigerant by the condenser can be improved.

The harvester may further include a dust-proof filter provided at one end in the width direction between the cab and the box, the dust-proof filter preventing dust from entering between the cab and the box from the outside, and the cover may be disposed in a gap between the box and the dust-proof filter.

Since wind (outside air) enters between the cab and the box from the outside through the dust filter, a portion where the dust filter is provided serves as an air intake port for taking in air between the cab and the box. Therefore, by disposing the cover in the gap between the tank and the dust-proof filter, it is possible to suppress the wind from entering between the cab and the tank through the dust-proof filter after being discharged to the outside through the gap, and it is possible to effectively suppress the wind passing through the condenser from forming a loop. Therefore, further improvement in the cooling efficiency of the refrigerant by the condenser can be achieved.

The cover may be divided into a plurality of pieces, and in this case, some of the plurality of covers (divided portions) may be attached to the box. Thus, even if the case is rotated to one side in the width direction and unfolded, the amount of projection of the cover from the rotated case can be reduced as much as possible. As a result, interference between the cover and the cab when the box is rotated can be suppressed, and the cover can be suppressed from hitting a person or a member around the person in a state where the box is unfolded. Further, deterioration in appearance due to protrusion of the large-sized cover from the case can be suppressed. Further, by attaching a part of the cover to the case, the size of the cover remaining on the body side can be reduced, the case can be prevented from contacting the cover on the body side, and the cover can be prevented from being damaged by the contact.

However, all of the covers divided into a plurality of parts may be attached to the case.

The condenser fan may be disposed upstream of the condenser in the flow direction of the wind.

In this configuration, since the wind sent from the condenser fan passes through the condenser, the wind passing through the condenser is weaker than in a configuration in which the condenser fan is disposed on the downstream side in the flow direction with respect to the condenser, that is, a configuration in which the wind sucked into the condenser fan passes through the condenser. Therefore, a loop caused by the wind returning to the outside from between the cab and the tank is easily formed, and by providing the cover, the effect of suppressing the formation of the loop can be remarkably exhibited, and the cooling efficiency of the refrigerant by the condenser can be dramatically improved.

The cover may be made of metal, but is preferably made of resin. If the cover is made of resin, the processing is easy, and in the structure that the box rotates to one side in the width direction and is unfolded, the damage of other components caused by the contact of the cover and other components can be restrained when the box is opened and closed.

Effects of the invention

According to the present invention, it is possible to suppress wind that has passed through the condenser from being discharged to the outside from between the cab and the tank and then bypassing between the cab and the tank. As a result, the air passing through the condenser can be prevented from forming a loop, and the cooling efficiency of the refrigerant by the condenser can be improved.

Drawings

The first embodiment:

fig. 1 is a right side view of a combine body according to an embodiment of the present invention.

Fig. 2 is a plan view of the body.

Fig. 3 is a left side view showing the internal structure of the grain tank.

Fig. 4 is a perspective view showing the inner side of the boundary portion between the fixed wall and the opening/closing wall of the grain box.

Fig. 5 is a perspective view of a main portion showing the structure of the inner side of the fixed wall portion.

Fig. 6 is a perspective view showing the structure of the inside of the opening/closing wall portion.

Fig. 7 is a perspective view showing the structure of the inside of the lower end portion of the opening/closing wall portion.

Second embodiment:

fig. 8 is a right side view of the body of the combine harvester of an embodiment of the present invention.

Fig. 9 is a top view of the body.

Fig. 10 is a left side view showing the internal structure of the grain box.

Fig. 11 is a perspective view showing the structure of the inside of the boundary portion between the fixed wall and the opening/closing wall of the grain box.

Fig. 12 is a perspective view of a main portion showing the structure of the inner side of the fixed wall portion.

Fig. 13 is a perspective view showing the structure of the inside of the opening/closing wall portion.

Fig. 14 is a perspective view showing the structure of the inside of the lower end portion of the opening/closing wall portion.

The third embodiment:

fig. 15 is a right side view of the body of the combine harvester of an embodiment of the present invention.

Fig. 16 is a top view of the body.

Fig. 17 is a right side view showing an internal structure between the cab and the grain box.

Fig. 18 is a diagram for explaining a problem of the conventional configuration.

Fig. 19 is a sectional view showing a brake link structure.

Fig. 20 is a perspective view showing the lower end of the pressing arm and the upper end of the swinging member.

Description of the reference numerals

The first embodiment:

1: combine harvester (harvester)

5: grain box (case)

13: fixed wall part

14: opening and closing wall

21: sealing strip (sealing component)

22: lock receiving metal fittings (locked part)

31: locking pin (stop part)

34: locking handle (operation parts)

51: eave part

54: bolt (fastener)

Second embodiment:

1: combine harvester (harvester)

5: grain box (case)

13: fixed wall part

14: opening and closing wall

21: sealing strip (sealing component)

22: lock receiving metal fittings (locked part)

31: locking pin (stop part)

34: locking handle (operation parts)

51: eave part

54: bolt (fastener)

The third embodiment:

1: combine harvester (harvester)

4: driver's cabin

5: grain box

21: dustproof filter

22: accommodation chamber

24: condenser

25: condenser fan

26: cover

Detailed Description

The first embodiment:

hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

< Structure of machine body of combine harvester >

Fig. 1 is a right side view of a body 2 of a combine harvester 1 according to an embodiment of the present invention. Fig. 2 is a plan view of the body 2.

The combine harvester 1 is an example of a harvester that harvests grain and straw and threshes grain from grain and straw while traveling in a field. The body 2 of the combine harvester 1 includes a main frame 3 as a structure formed by combining steel materials. A cab 4, a grain tank 5, and the like are supported by the main frame 3.

Although not shown, the machine body 2 is supported by a pair of left and right traveling devices. In the travel device, in order to enable the combine harvester 1 to travel in a field, for example, a crawler having a high rough ground passing ability is employed.

The cab 4 is disposed at a front end portion of the main frame 3. The cab 4 provides a space in which a driver rides, and in the space, operating members such as a driver seat on which the driver sits, an operating lever, and an operating pedal are disposed. As shown in fig. 1, a door 11 is provided on the right side surface of cab 4. The door 11 is supported to be openable and closable by two hinges 12 attached to the rear end portion thereof. The driver can open the door 11 and enter the cab 4.

The grain tank 5 is disposed behind the cab 4 on the main frame 3. Grains threshed from grain stalks by a threshing device are stored in a grain tank 5. The right side wall constituting the right side surface of the grain tank 5 includes a fixed wall 13 and an opening/closing wall 14 above the fixed wall 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 and closable around a rotation axis extending vertically along a rear end edge thereof. When the opening/closing wall portion 14 is opened, the fixed wall portion 13 is left, and the right side surface of the grain tank 5 is largely opened. Thus, when performing maintenance inside the grain tank 5, a maintenance operator can easily enter the grain tank 5 through the large open opening.

The grain tank 5 is configured to be entirely expandable rightward around an axis extending in the vertical direction at the right rear end portion. This allows the maintenance operator to easily maintain the equipment disposed between cab 4 and grain tank 5 by spreading the entire grain tank 5 to the right.

< internal Structure of grain tank >

Fig. 3 is a left side view showing the internal structure of the grain tank 5. Fig. 4 is a perspective view showing the inner side of the boundary portion between the fixed wall 13 and the opening/closing wall 14 of the grain tank 5. Fig. 5 is a perspective view of a main portion showing the structure of the inside of the fixed wall portion 13.

As shown in fig. 4 and 5, a weather strip 21 as a band-shaped seal member is provided along the upper end edge of the fixed wall portion 13 of the grain tank 5. In a state where the opening-closing wall portion 14 is closed, the lower end portion of the opening-closing wall portion 14 is pressed against the weather strip 21 from the right side. As a result, the weather strip 21 is elastically deformed, the weather strip 21 is brought into close contact with the opening/closing wall portion 14 by the elastic force, and the space between the upper end portion of the fixed wall portion 13 and the lower end portion of the opening/closing wall portion 14 is liquid-tightly sealed.

Further, 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 in a side view and a bent portion 24 that is bent to protrude upward from an upper portion of the flat plate portion 23 and extends rightward. The lock receiving metal fitting 22 is fastened to the fixed wall portion 13 by, for example, two bolts 26 with the spacer 25 interposed between the inner surface of the fixed wall portion 13 and the flat plate-shaped portion 23. The bent portion 24 of the lock-receiving metal fitting 22 is wound around the upper side of the sealing strip 21.

Fig. 6 is a perspective view showing the structure of the inside of the opening/closing wall portion 14.

Two locking 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 metal plate into a substantially U-shape in a plan view, and is fixed to the inner surface of the opening/closing wall portion 14 by welding. The pin holder 32 is disposed so as to correspond to the two lock receiving fittings 22 in the grain tank 5 and to be located at the same position in the front-rear direction as the lock receiving fittings 22 in a state where the opening/closing wall portion 14 is closed. The locking pin 31 is inserted through the pin holder 32 and extends in the up-down direction.

A link mechanism 33 is connected to the lock pin 31. As shown in fig. 1, the opening/closing wall portion 14 is provided with a lock handle 34. The lock knob 34 is disposed on the back side of an opening 35 formed in the opening/closing wall portion 14. The link mechanism 33 is a mechanism that moves the two lock pins 31 up and down in synchronization by operation of the lock handle 34.

The link mechanism 33 includes: a pivot shaft 41 extending in the front-rear direction, two swing plates 42 supported by the pivot shaft 41 so as not to be relatively rotatable, and a link arm 43 connected to the lower end of each swing plate 42 so as to be relatively rotatable. The turning shaft 41 is connected to the lock handle 34, and when the lock handle 34 is turned between a closed position extending in the up-down direction and an open position falling to the right from the closed position, the turning shaft 41 is turned around the center line. Each link arm 43 extends downward from the swinging plate 42, and a lower end portion thereof is connected to an upper end portion 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 portion of each swing plate 42 is lifted up and each link arm 43 is lifted up as the rotating shaft 41 rotates, and each lock pin 31 is lifted up. In a state where the lock handle 34 is operated to the open position, the lock pin 31 is located at the uppermost non-locking position. In a state where the lock pin 31 is located at the non-locking position, the lower end of the lock pin 31 is arranged above the upper end edge (lower end edge of the opening) of the fixed wall portion 13 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 end portion of each swing plate 42 is lowered as the rotating shaft 41 is rotated, each link arm 43 is lowered, and each lock pin 31 is lowered. In a state where the lock handle 34 is operated to the closed position, the lock pin 31 is located at the lowermost locking position. In a state where the lock pin 31 is located at the locking position, the lower end of the lock pin 31 is disposed below the upper end edge (lower end edge of the opening) of the fixed wall portion 13 in the vertical direction.

In the process of lowering the lock pin 31 from the non-locking position to the locking position, the lower end of the lock pin 31 abuts against the bent portion 24 of the lock receiving metal fitting 22. When the lock pin 31 is further lowered, the lower end portion of the lock pin 31 is slidingly rubbed with the bent portion 24 of the lock receiving metal fitting 22. By the bending of the bending portion 24, the lower end portion of the locking pin 31 receives a force toward the inside of the grain box 5. By this force, the opening/closing wall portion 14 is pulled toward the inside of the grain box 5, and the lower end portion of the opening/closing wall portion 14 is pressed against the weather strip 21 from the right side.

Fig. 7 is a perspective view showing the structure of the inside of the lower end portion of the opening/closing wall portion 14. 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 brim portion 51 is formed by bending a metal plate, and integrally includes an inclined portion 52 inclined toward the inside (left side) of the grain tank 5 and an extending portion 53 extending from the inclined portion 52 to the inner surface side (right side) of the opening/closing wall portion 14 while being folded back. The eaves 51 extends in the front-rear direction, and is fastened to the opening/closing wall 14 by three bolts 54 in a state where the extending portion 53 abuts against the inner surface of the opening/closing wall 14.

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

In a state where the opening/closing wall portion 14 is closed, as shown in fig. 4, the two eaves 51 are arranged above the weather strip 21 provided on the fixed wall portion 13 and extend to a position inside (left side) the grain box 5 with respect to the weather strip 21. In addition, in a state where the opening/closing wall portion 14 is closed, the bent portion 24 of the lock receiving metal fitting 22 enters between the two eaves 51 and is wound around the upper side of the weather strip 21.

< Effect >

As described above, when the opening/closing wall portion 14 of the grain tank 5 is opened, an opening is formed. This allows the inside of the grain box 5 to be reached through the opening, and maintenance work such as cleaning work inside the grain box 5 can be performed.

A weather strip 21 is provided along the lower end edge of the opening, i.e., the upper end edge of the fixing wall portion 13. When the opening/closing wall portion 14 is closed, the opening/closing wall portion 14 is in close contact with the weather strip 21. Therefore, even if the opening/closing wall portion 14 is slightly deformed so as to bulge due to the pressure in the grain tank 5, the adhesion between the opening/closing wall portion 14 and the weather strip 21 can be ensured by the elasticity of the weather strip 21. Therefore, the grain stored in the grain box 5 can be prevented from overflowing between the opening/closing wall portion 14 and the upper end edge of the fixed wall portion 13.

Further, in a state where the opening/closing wall portion 14 is closed, the lock handle 34 is operated to the closed position so that the lock pin 31 is disposed at the locking position, and the lower end portion of the lock pin 31 is locked to the lock receiving metal fitting 22, and therefore, even if the opening/closing wall portion 14 is slightly deformed so as to bulge out due to the pressure inside the grain tank 5, it is possible to suppress the generation of a gap between the opening/closing wall portion 14 and the upper end edge of the fixed wall portion 13. Therefore, the grain stored in the grain box 5 can be further prevented from overflowing between the opening/closing wall portion 14 and the upper end edge of the fixed wall portion 13.

Further, since the upper end portion of the lock receiving metal fitting 22 is wound around the upper side of the weather strip 21, even if the lock pin 31 is moved from the non-locking position to the locking position by operating the lock handle 34 from the open position to the closed position in the middle of opening and closing of the opening and closing wall portion 14, the interference of the lower end portion of the lock pin 31 with the weather strip 21 can be suppressed, and the possibility of damage to the weather strip 21 can be reduced.

A brim 51 disposed above the weather strip 21 in a state where the opening/closing wall 14 is closed is provided at a lower end of the opening/closing wall 14. Accordingly, the contact portion between the opening/closing wall portion 14 and the weather strip 21 is hidden under the brim portion 51, and therefore, grains such as rice grains can be prevented from being caught in the contact portion. Therefore, when the opening/closing wall portion 14 is opened, grain can be prevented from being scattered in a stripe shape from the grain box 5 to a field or the like.

In a state where the opening/closing wall portion 14 is closed, the eaves portion 51 extends to a position on the downstream side of the weather strip 21 in a direction from the opening/closing wall portion 14 toward the inside of the grain box 5. This effectively prevents grains from being caught in the contact portion between the opening/closing wall portion 14 and the weather strip 21 and, when the opening/closing wall portion 14 is opened, grains can be satisfactorily prevented from being scattered in a streak form from the grain box 5 into a field or the like.

The eaves 51 are provided in two rows, extend along the lower end of the opening/closing wall 14, and are divided at the middle in the longitudinal direction. In a state where the opening/closing wall portion 14 is closed, the lock receiving metal fittings 22 are arranged at the divided portions of the eaves portion 51. This can prevent the lock receiving metal fitting 22 from interfering with the brim 51, and the lock receiving metal fitting 22 serves as a wall, thereby preventing grain in the grain tank 5 from entering the contact portion between the opening/closing wall 14 and the weather strip 21 due to high pressure.

The brim 51 may be formed separately from the opening/closing wall 14 and attached to the opening/closing wall 14 with a bolt 54. In this case, the eaves 51 may not be formed integrally with the opening/closing wall 14, and therefore, an increase in the manufacturing cost of the opening/closing wall 14 can be suppressed. Further, by attaching the eaves 51 to the opening/closing wall 14 with the bolts 54, the attaching strength of the eaves 51 can be increased as compared with a structure in which the eaves 51 is attached to the opening/closing wall 14 with an adhesive or a double-sided tape, and the fear that the eaves 51 falls off in the grain tank 5 can be reduced.

< modification example >

While the embodiments of the present invention have been described above, the present invention can be implemented in other embodiments.

For example, although the combine harvester 1 is described as an example of a harvester, the present invention is not limited to the combine harvester 1, and may be applied to a harvester that harvests vegetables such as carrots, white radishes, green beans, and cabbage.

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

Second embodiment:

< Structure of machine body of combine harvester >

Fig. 8 is a right side view of the body 2 of the combine harvester 1 according to the embodiment of the present invention. Fig. 9 is a plan view of the body 2.

The cab 4 is disposed at a front end portion of the main frame 3. The cab 4 provides a space in which a driver rides, and in the space, operating members such as a driver seat on which the driver sits, an operating lever, and an operating pedal are disposed. As shown in fig. 8, a door 11 is provided on the right side surface of cab 4. The door 11 is supported to be openable and closable by two hinges 12 attached to the rear end portion thereof. The driver can open the door 11 and enter the cab 4.

< internal Structure of grain tank >

Fig. 10 is a left side view showing the internal structure of the grain tank 5. Fig. 11 is a perspective view showing the inner side of the boundary portion between the fixed wall 13 and the opening/closing wall 14 of the grain box 5. Fig. 12 is a perspective view of a main portion showing the structure of the inside of the fixed wall portion 13.

As shown in fig. 11 and 12, a weather strip 21 as a band-shaped seal member is provided along the upper end edge of the fixed wall portion 13 of the grain tank 5. In a state where the opening-closing wall portion 14 is closed, the lower end portion of the opening-closing wall portion 14 is pressed against the weather strip 21 from the right side. As a result, the weather strip 21 is elastically deformed, the weather strip 21 is brought into close contact with the opening/closing wall portion 14 by the elastic force, and the space between the upper end portion of the fixed wall portion 13 and the lower end portion of the opening/closing wall portion 14 is liquid-tightly sealed.

Fig. 13 is a perspective view showing the structure of the inside of the opening/closing wall portion 14.

A link mechanism 33 is connected to the lock pin 31. As shown in fig. 8, the opening/closing wall portion 14 is provided with a lock handle 34. The lock knob 34 is disposed on the back side of an opening 35 formed in the opening/closing wall portion 14. The link mechanism 33 is a mechanism that moves the two lock pins 31 up and down in synchronization by operation of the lock handle 34.

Fig. 14 is a perspective view showing the structure of the inside of the lower end portion of the opening/closing wall portion 14. In fig. 14, illustration of the lock pin 31 and the pin holder 32 is omitted.

In a state where the opening/closing wall portion 14 is closed, as shown in fig. 11, the two eaves 51 are arranged above the weather strip 21 provided on the fixed wall portion 13 and extend to a position inside (left side) the grain box 5 with respect to the weather strip 21. In addition, in a state where the opening/closing wall portion 14 is closed, the bent portion 24 of the lock receiving metal fitting 22 enters between the two eaves 51 and is wound around the upper side of the weather strip 21.

< Effect >

< modification example >

The third embodiment:

< Structure of machine body of combine harvester >

Fig. 15 is a right side view of the body 2 of the combine harvester 1 according to the embodiment of the present invention. Fig. 16 is a plan view of the body 2.

The cab 4 is disposed at a front end portion of the main frame 3. The cab 4 provides a space in which a driver rides, and in the space, operating members such as a driver seat on which the driver sits, an operating lever, and an operating pedal are disposed. As shown in fig. 15, door 11 is provided on the right side surface of cab 4. The door 11 is supported to be openable and closable by two hinges 12 attached to the rear end portion thereof. The driver can open the door 11 and enter the cab 4.

< accommodation Chamber >

Fig. 17 is a right side view showing an internal structure between the cab 4 and the grain box 5.

As shown in fig. 15, a dust filter 21 for preventing dust from entering between the cab 4 and the grain tank 5 from the outside is provided on the right side surface of the combine harvester 1. The rear portion of the dust filter 21, i.e., the portion covered with the dust filter 21 from the right between the cab 4 and the grain tank 5, is formed as a housing chamber 22 for housing various devices.

An air cleaner 23 for cleaning outside air taken into an engine (not shown) is disposed in the housing chamber 22, for example.

The combine harvester 1 is equipped with an air conditioner for air conditioning in the cab 4. In the housing room 22, a condenser 24 of an air conditioner and a condenser fan 25 attached to the condenser 24 are disposed. The condenser 24 is disposed at the rear end of the storage chamber 22, and the condenser fan 25 is disposed adjacent to the front side of the condenser 24.

In the air conditioner, the semi-liquid refrigerant compressed by the compressor is supplied to the condenser 24, and the refrigerant is cooled and liquefied by the condenser 24. The refrigerant substantially liquefied in the condenser 24 is supplied to an accumulator, and the refrigerant in a vaporized state remaining in the accumulator without being liquefied is separated from the liquefied refrigerant. The liquefied refrigerant is injected from the expansion valve to the evaporator, absorbs heat from the evaporator, and is vaporized at once, thereby cooling the evaporator. The air from the blower is cooled by the evaporator, and the cooled air is supplied into the cab 4.

The air sent from the condenser fan 25 passes through the condenser 24, thereby promoting cooling of the refrigerant in the condenser 24.

< cover >

A cover 26 made of resin is provided on the right side surface of the combine harvester 1 between the cab 4 and the grain tank 5, specifically, between the grain tank 5 and the dust filter 21. The cover 26 is divided into three

covers

26A, 26B, and 26C. The cover 26A is formed into a substantially rectangular shape extending in the vertical direction when viewed from the right side, and the rear end thereof is attached to the front end of the right side surface of the grain tank 5 by a plurality of bolts (not shown). The position of the cover 26A in the vertical direction corresponds to the positions of the condenser 24 and the condenser fan 25 in the vertical direction. For example, the position of the center in the vertical direction of the cover 26A is set to be slightly higher than the rotation axis of the condenser fan 25. The cover 26B is formed in a substantially rectangular shape, is attached to a frame 27 extending in the vertical direction in the storage chamber 22, and extends vertically along the frame 27. The upper end of the cover 26B overlaps the cover 26A in the left-right direction from the left side. The cover 26C is formed in a substantially rectangular shape, is attached to a frame 28 extending rearward and downward from the left side of the lower end portion of the cover 26B, and extends obliquely along the frame 28.

< Effect >

As described above, in the storage room 22 between the cab 4 and the grain tank 5 disposed behind the cab, the condenser 24 and the condenser fan 25 for passing wind through the condenser 24 are disposed. A cover 26 is provided on the right side surface of the combine harvester 1 between the cab 4 and the grain tank 5. Specifically, in the combine harvester 1, the dust-proof filter 21 is disposed between the cab 4 and the grain tank 5 so as to face the dust-proof filter 21 from the right side, and the cover 26 is provided in a gap between the grain tank 5 and the dust-proof filter 21.

Since wind (outside air) enters between the cab 4 and the grain tank 5 through the dust-proof filter 21 from the outside, the portion where the dust-proof filter 21 is provided serves as an air inlet for sucking air between the cab 4 and the grain tank 5 (the storage chamber 22). Therefore, by disposing the cover 26 in the gap between the grain tank 5 and the dust-proof filter 21, as shown by the hollow arrows in fig. 17, the discharge of the wind from between the grain tank 5 and the dust-proof filter 21 to the outside is blocked by the cover 26. Therefore, the wind passing through the condenser 24 is prevented from being discharged to the outside and then entering between the cab 4 and the grain tank 5 through the dust-proof filter 21, and the wind passing through the condenser 24 is prevented from forming a loop. Therefore, the cooling efficiency of the refrigerant by the condenser 24 can be improved.

The cover 26 is divided into a plurality of

covers

26A, 26B, and 26C. A cover 26A as a part of these members is attached to the grain box 5. Thus, even in the configuration in which the grain tank 5 is rotated and unfolded rightward, the amount of projection of the hood 26A from the rotated grain tank 5 can be reduced as compared with the case in which all of the

hoods

26A, 26B, and 26C are attached to the grain tank 5. As a result, interference between the cover 26A and the cab 4 when the grain tank 5 is rotated can be suppressed, and the cover 26A can be suppressed from hitting a person or a member around the person in a state where the grain tank 5 is unfolded. Further, the large-sized cover 26A can be prevented from protruding from the grain box 5 to deteriorate the appearance. Further, by attaching the cover 26A to the grain tank 5, the size and position of the

covers

26B and 26C remaining on the machine body 2 side can be appropriately designed, so that the grain tank 5 can be prevented from coming into contact with the

covers

26B and 26C on the machine body 2 side, and the

covers

26B and 26C can be prevented from being damaged by the contact.

The condenser fan 25 is disposed upstream of the condenser 24 in the flow direction of the wind in the condenser 24. In this configuration, since the wind sent from the condenser fan 25 passes through the condenser 24, the wind passing through the condenser 24 is weaker than the configuration in which the condenser fan 25 is disposed on the downstream side in the flow direction with respect to the condenser 24, that is, the configuration in which the wind sucked into the condenser fan 25 passes through the condenser 24. Therefore, when the cover 26 is not provided, as shown in fig. 18, a loop is easily formed by the wind that is discharged to the outside from between the cab 4 and the grain tank 5. By providing the cover 26, the effect of suppressing the formation of the loop can be remarkably exhibited, and the cooling efficiency of the refrigerant by the condenser 24 can be dramatically improved.

Further, since the cover 26 is made of resin, the processing is easy. Further, when the grain tank 5 is rotated to the right and unfolded, damage to other components due to contact of the cover 26 with the other components can be suppressed.

< brake link Structure >

Fig. 19 is a sectional view showing a brake link structure.

The operating pedal disposed in the cab 4 includes a brake pedal 31. The brake pedal 31 includes a brake pedal arm 32 and a brake pedal pad 33 supported by the brake pedal arm 32.

The brake pedal arm 32 extends in the front-rear direction. A rear end portion of the brake pedal arm 32 is a base end portion, and an arm support shaft 34 extending in the left-right direction is integrally provided. The arm support shaft 34 is rotatably supported by a column 35 fixed to the main frame 3 (see fig. 15). Thereby, the brake pedal arm 32 is provided swingably about the arm support shaft 34 as a fulcrum.

One end of the tension coil spring 36 is connected to the brake pedal arm 32. The other end of the tension coil spring 36 is fixed to the pillar 35. The brake pedal arm 32 is biased in a direction in which the front end portion on the front side is lifted by the elastic force of the tension coil spring 36.

The brake pedal pad 33 is held at the front end portion of the brake pedal arm 32.

One end of the pressing arm 37 is connected to the brake pedal arm 32. The pressing arm 37 extends forward and downward from the brake pedal arm 32 in a state where the brake pedal 31 is not depressed, and extends to be bent or bent downward rearward. The push arm 37 extends to the lower side of the cab 4.

A swing member 38 is provided below the cab 4. Further, a support member 39 is provided below the cab 4 so as to be fixed to the main frame 3. The swinging member 38 is formed in a plate shape extending in the up-down direction along the front-rear direction. The swing member 38 is swingably supported by the swing shaft 41 extending rightward from the support member 39 by inserting the swing shaft 41 into the vertical center portion of the swing member 38.

Fig. 20 is a perspective view showing the lower end portion of the pressing arm 37 and the upper end portion of the swinging member 38.

A pin holding member 42 is provided at an upper end portion of the swinging member 38. The pin holding member 42 extends from the right side surface of the swinging member 38 to the right side, and is bent to the upper front side to extend in parallel with the swinging member 38. The pin holding member 42 is provided with an input pin 43 penetrating in the left-right direction. A cylindrical collar 44 is fitted to a portion of the input pin 43 projecting rightward from the pin holding member 42 so as to be relatively rotatable. The lower end of the pressing arm 37 faces the collar 44 from the front upper side in a state where the brake pedal 31 is not depressed. On the other hand, one end of the brake cable 45 is connected to the lower end of the swing member 38.

According to this configuration, when the brake pedal pad 33 is depressed by the foot of the driver, the brake pedal arm 32 rotates against the elastic force of the tension coil spring 36, and the lower end surface 46 of the pressing arm 37 abuts against the collar 44 from the front upper side. When the brake pedal pad 33 is further depressed to further rotate the brake pedal arm 32, the collar 44 is pressed by the lower end surface 46 of the pressing arm 37, and the swing member 38 is rotated counterclockwise as viewed from the right side by the pressing force. The brake cable 45 is lifted by the rotation of the swinging member 38, and a brake (not shown) mechanically operated by the brake cable 45 is operated.

Since the collar 44 is fitted to the input pin 43 so as to be relatively rotatable, the collar 44 rotates when the lower end surface 46 of the pressing arm 37 presses the collar 44. This can suppress the collar 44 from sliding on the lower end surface 46 of the pressing arm 37, and can prevent deterioration of the operational feeling of the brake pedal 31 due to this sliding.

< modification example >

For example, in the above embodiment, one cover 26A of the three

covers

26A, 26B, and 26C constituting the cover 26 is attached to the grain box 5, but two of them may be attached to the grain box 5, or all of the three

covers

26A, 26B, and 26C may be attached to the grain box 5.

As an example of the harvester, a combine harvester 1 is exemplified, but the present invention is not limited to the combine harvester 1, and can be applied to a harvester that harvests vegetables such as carrots, white radishes, green beans, cabbage, and the like.

Claims

1. A harvester comprises a box capable of accommodating harvested materials, wherein,

an opening/closing wall portion formed at least partially of one side wall portion of the case is configured to be openable/closable by rotation about an axis extending in a vertical direction,

a sealing member that is in close contact with the opening/closing wall portion in a state where the opening/closing wall portion is closed is provided along a lower end edge of an opening formed when the opening/closing wall portion is opened,

an eaves portion arranged on the upper side of the sealing member in a state where the opening/closing wall portion is closed is provided at a lower end portion of the opening/closing wall portion.

2. A harvester according to claim 1,

the brim portion extends to a position on a downstream side of the sealing member in a direction from the opening/closing wall portion toward an inside of the box in a state where the opening/closing wall portion is closed.

3. A harvester according to claim 1 or 2,

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 between a non-locking position and a locking position,

a lower end of the locking member is disposed above a lower end edge of the opening in a state where the locking member is located at a non-locking position, and a lower end of the locking member is disposed below the lower end edge of the opening in a state where the locking member is located at a locking position,

a locked portion that locks a lower end portion of the locking member at the locking position by sliding the lower end portion of the locking member that is lowered from the non-locking position to the locking position is provided in the box.

4. A harvester according to any one of claims 1 to 3,

the eaves portion extends along the lower end of the opening/closing wall portion, and is divided at a middle portion in the longitudinal direction thereof,

the engaged portion is disposed in a divided portion of the brim portion in a state where the opening/closing wall portion is closed.

5. A harvester according to claim 4,

the upper end of the locked portion is wound around the upper side of the seal member.

6. A harvester according to any one of claims 1 to 5,

the eaves portion is formed with the opening/closing wall portion, and is attached to the opening/closing wall portion using a fastener.

7. A harvester comprises a box capable of accommodating harvested materials, wherein,

an operating member is provided on an outer surface of the opening/closing wall portion so as to be operable to an opening position and a closing 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,

wherein the locking member is located at a non-locking position and a lower end of the locking member is disposed above a lower end edge of the opening in a state where the operation member is operated to the open position, and the locking member is located at a locking position and a lower end of the locking member is disposed below the lower end edge of the opening in a state where the operation member is operated to the closed position,

a locked portion that is provided in the box and that allows a lower end portion of the locking member that descends from the non-locking position to the locking position to slide and lock the lower end portion of the locking member at the locking position,

8. A harvester according to claim 7,

9. A harvester according to claim 8,

the brim portion extends to a position downstream of the sealing member in a direction from the opening/closing wall portion toward the inside of the box in a state where the opening/closing wall portion is closed.

10. A harvester according to claim 9,

11. A harvester according to any one of claims 8 to 10,

12. A harvester, comprising:

a cab that provides a space for a driver to ride on;

a tank disposed behind the cab and configured to accommodate harvested material;

a condenser disposed between the cab and the tank, the condenser cooling a refrigerant;

a condenser fan disposed along the condenser to allow wind to pass through the condenser; and

and a cover that is provided at one end in the width direction between the cab and the box and blocks the flow of wind from between the cab and the box to the outside.

13. A harvester according to claim 12,

further comprising a dust-proof filter provided at an end portion on one side in the width direction between the cab and the box to prevent dust from entering between the cab and the box from the outside,

the cover is disposed in a gap between the case and the dust filter.

14. A harvester according to claim 12 or 13,

the cover is divided into a plurality of parts,

a part of the cover divided into a plurality of parts is attached to the case.

15. A harvester according to any one of claims 12 to 14,

the condenser fan is disposed upstream of the condenser in a flow direction of wind flowing through the condenser.

16. A harvester according to any one of claims 12 to 15,

the cover is made of resin.