JP7685161B2 - combine - Google Patents

Description

The present invention relates to a combine harvester equipped with a storage box for storing gravel in a feeder house that transports grain stalks.

A technology has been known in which a storage box is provided at the bottom of a feeder house that transports harvested stalks to a threshing device, and gravel that is mixed with the stalks that leak down from an opening in the bottom wall of the feeder house and transported to the feeder house is stored. (Patent Document 1)

JP 2004-283009 A

However, with the technology of Patent Document 1, there was a risk that gravel leaking from the feeder house would collide with the rear wall of the storage box, scraping the surface of the rear wall, etc. of the storage box, causing the rear wall, etc. to become thinner or deformed.

The objective of the present invention is to provide a combine harvester that can prevent damage to the rear wall of the storage box by suppressing collisions between foreign objects leaking from the feeder house and the rear wall of the storage box, etc.

The present invention, which has solved the above problems, is as follows.
The invention according to claim 1 is a combine harvester having a threshing device (4) provided on the rear left side of a pre-harvesting treatment device (3) that harvests stalks, and a steering unit (5) provided on the rear right side of the pre-harvesting treatment device (3),
An opening (12) is formed in a lower wall (10) of a feeder house (3D) of the pre-harvest treatment device (3) to allow foreign matter transported to the feeder house (3D) to leak out, and a storage box (20) for storing foreign matter leaked out from the opening (12) is attached to the lower side of the lower wall (10). The storage box (20) is made up of a box-shaped storage main body portion (21) with an open top, an upstream plate portion (22) extending forward from an upper end portion of a front wall of the storage main body portion (21), and a rear wall portion (23) extending rearward from an upper end portion of the rear wall of the storage main body portion (21). a downstream plate portion (23) disposed in front of the rear wall of the storage main body portion (21) , a prevention wall (40) having a predetermined length in the vertical direction is provided in front of the rear wall of the storage main body portion (21), the prevention wall (40) is formed of a horizontal portion (40A) extending from the upper end portion of the rear wall of the storage main body portion (21) toward the front side, and a vertical portion (40B) extending from the front end portion of the horizontal portion (40A) toward the downward side, and the vertical length of the vertical portion (40B) is formed to be 1/3 to 2/3 of the vertical length of the rear wall of the storage main body portion (21) .

The invention of claim 2 is a combine as described in claim 1, in which a support shaft (16) extending in the left-right direction is provided on the underside of the lower wall (10), a cylindrical portion (24) which is rotatably fitted onto the support shaft (16) is provided at the rear of the downstream plate portion (23), an operating lever (44) is provided on the cylindrical portion (24) for rotating the cylindrical portion (24) around the axis of the support shaft (16), and an upper portion of the operating lever (44) faces the steering section ( 5 ).

The invention according to claim 3 is the combine harvester according to claim 2 , further comprising a compression member (17) provided on the lower surface of the lower wall (10) at a portion facing the upstream plate portion (22).

The invention of claim 4 is a combine as described in claim 3, in which a sensor (25) for measuring the amount of stored foreign matter is provided in the storage main body (21), and when the amount of stored foreign matter reaches or exceeds a predetermined amount, an alarm means (5A, 5B) of the control section (5) is activated.

The invention of claim 5 is a combine harvester as described in claim 4, in which a dust discharge box (30) with an internal ventilation fan (31) is provided on the upper side of the upper wall (11) of the feeder house (3D), and communication holes formed in the side walls of the storage box (20) and the dust discharge box (30) are connected by an air passage ( 32 ).

According to the invention described in claim 1, an opening (12) is formed in a lower wall (10) of a feeder house (3D) of a pre-harvest treatment device (3) to allow foreign matter transported to the feeder house (3D) to leak out, and a storage box (20) for storing foreign matter leaked out from the opening (12) is attached to the lower side of the lower wall (10), and the storage box (20) is formed of a box-shaped storage main body portion (21) with an open top, an upstream plate portion (22) extending forward from an upper end portion of a front wall of the storage main body portion (21), and a downstream plate portion (23) extending rearward from an upper end portion of a rear wall of the storage main body portion (21), A prevention wall (40) having a predetermined length in the vertical direction is provided on the front side of the rear wall of the storage main body (21), and the prevention wall (40) is formed of a horizontal portion (40A) extending from the upper end of the rear wall of the storage main body (21) toward the front side and a vertical portion (40B) extending from the front end of the horizontal portion (40A) toward the downward side, and the vertical length of the vertical portion (40B) is formed to be 1/3 to 2/3 of the vertical length of the rear wall of the storage main body (21) . This makes it possible to prevent foreign matter leaking down from the opening (12) from colliding with the rear wall of the storage main body (21) and suppress damage to the rear wall of the storage main body (21).

In addition, foreign matter leaking from the opening (12) can be prevented from colliding with the upper part of the rear wall of the storage main body (21), thereby suppressing damage to the upper part of the rear wall of the storage main body (21).

According to the invention described in claim 2 , in addition to the effects of the invention described in claim 1 , a support shaft (16) extending in the left-right direction is provided on the underside of the lower wall (10), a cylindrical portion (24) which is rotatably fitted onto the support shaft (16) is provided at the rear of the downstream plate portion (23), an operating lever (44) is provided on the cylindrical portion (24) for rotating the cylindrical portion (24) around the axis of the support shaft (16), and the upper part of the operating lever (44) faces the control unit (5). Therefore, the operating lever (44) can be operated from the control unit (5) to move the storage main body portion (21) to an open position with a downward forward inclination, and foreign matter inside the storage main body portion (21) can be discharged to the outside.

According to the invention described in claim 3 , in addition to the effects of the invention described in claim 2 , a compression member (17) is provided at a portion opposite the upstream plate portion (22) on the lower surface of the lower wall (10), so that the upstream plate portion (22) is sealed against the lower wall (10), thereby ensuring that foreign matter is stored within the storage main body portion (21).

According to the invention described in claim 4 , in addition to the effects of the invention described in claim 3 , a sensor (25) for measuring the amount of stored foreign matter is provided in the storage main body (21), and when the amount of stored foreign matter reaches or exceeds a predetermined amount, an alarm means (5A, 5B) of the control unit (5) is activated, so that the combine can be moved before the foreign matter becomes full, and the foreign matter can be discharged to a discharge location.

According to the invention described in claim 5 , in addition to the effects of the invention described in claim 4 , a dust discharge box (30) equipped with an air blower fan (31) is provided on the upper side of the upper wall (11) of the feeder house (3D), and communication holes formed in the side walls of the storage box (20) and the dust discharge box (30) are connected by an air blowing passage (32), so that foreign matter in the storage main body (21) can be efficiently discharged to the outside.

FIG. FIG. 1A is an explanatory diagram of an opening formed in a lower wall of a feeder house according to a first embodiment, and FIG. 1B is an explanatory diagram of an opening formed in a lower wall of a feeder house according to a second embodiment. FIG. 11 is a perspective view of a storage box attached to the lower surface of the lower wall of the feeder house. FIG. 2 is a longitudinal cross-sectional view of the storage box of the first embodiment in the front-rear direction. FIG. 11 is a longitudinal cross-sectional view of a storage box according to a second embodiment. 13A and 13B are longitudinal cross-sectional views of an elastic member of a storage box according to a third embodiment, in which FIG. 13A is a longitudinal cross-sectional view of a storage box according to a fourth embodiment, in a closed position, and FIG. 13A is a longitudinal cross-sectional view of a storage box according to a fifth embodiment, in a closed position, and FIG. 1A is a front view of an air duct connecting a dust discharge cylinder attached to an upper wall of a feeder house and a storage box, and FIG. FIG. 2 is a connection diagram of a controller.

As shown in Figures 1 and 2, a general-purpose combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travel on the soil surface on the underside of the machine frame 1, a pre-harvesting device 3 that harvests the stalks in the field is provided on the front side of the machine frame 1, a thresher 4 that threshes and sorts the harvested stalks is provided on the rear left side of the pre-harvesting device 3, and a control unit 5 on which the operator sits is provided on the rear right side of the pre-harvesting device 3.

An engine room 6 that houses the engine is provided below the control unit 5, a grain tank 7 that stores the threshed and sorted grains is provided behind the control unit 5, and a discharge auger 8 that discharges the grains to the outside is provided behind the grain tank 7.

The pre-harvesting processing device 3 is composed of a raking device 3A that transports the culms in the field to the rear while standing them up, a cutting blade device 3B that cuts the base of the culms transported to the rear lower part of the raking device 3A, an auger device 3C that gathers the culms transported to the rear of the raking device 3A to the left side, and a feeder house 3D that transports the gathered culms to the threshing device 4.

A storage box 20 for storing gravel and other debris that has entered the feeder house 3D is provided approximately midway in the front-to-rear direction of the lower wall 10 of the feeder house 3D, and a dust discharge box 30 is provided approximately midway in the front-to-rear direction of the upper wall 11 of the feeder house 3D, facing the storage box 20.

A blower fan 31 is provided inside the dust discharge box 30. Air exhausted from the dust discharge box 30 is blown toward the storage box 20 through the feeder house 3D.

<Opening of First Embodiment>
As shown in Fig. 3(a), the rectangular opening 12 of the first embodiment is formed in the lower wall 10 of the feeder house 3D at a portion facing the storage box 20. This allows gravel such as pebbles and sand that are mixed with the grain stalks and transported into the feeder house 3D to leak from the opening 12 into the storage box 20.

<Opening of Second Embodiment>
3(b), the rectangular opening 12 in the second embodiment is formed of a rectangular upstream opening 12A located on the upstream side of the lower wall 10 and a substantially isosceles triangular downstream opening 12B located on the downstream side, and the apex of the downstream opening 12B is formed in the center in the left-right direction of the lower wall 10 of the feeder house 3D. This allows gravel such as pebbles and sand mixed in the grain stalks and transported to the feeder house 3D to efficiently leak down from the center in the left-right direction of the lower wall 10 of the feeder house 3D into the storage box 20.

As shown in FIG. 4, the storage box 20 for storing gravel that has leaked from the feeder house 3D is formed from a storage main body 21 with an open top, an upstream plate portion 22 extending forward from the upper end of the front wall of the storage main body 21, a downstream plate portion 23 extending rearward from the upper end of the rear wall of the storage main body 21, and a cylindrical portion 24 extending left and right at the rear of the downstream plate portion 23.

The upstream plate portion 22 is provided with an engagement member 15 such as a bolt that engages with the bottom wall 10 of the feeder house 3D. The cylindrical portion 24 is also rotatably fitted onto a support shaft 16 extending in the left-right direction and provided on the bottom wall 10 of the feeder house 3D. As a result, when the storage box 20 becomes full of gravel, the engagement member 15 can be released to tilt the storage box 20 downwards in front, allowing the gravel in the storage box 20 to be discharged to the outside.

The amount of gravel stored in the storage box 20 is measured by a weight sensor ("sensor" in the claims) 25 such as a strain gauge attached to the bottom wall of the storage box 20. The measured value of the weight sensor 25 is displayed on a monitor on the front panel of the control unit 5. This allows the amount of gravel stored in the storage box 20 to be displayed on the monitor of the control unit 5, and the gravel in the storage box 20 to be discharged at the appropriate time. Also, when the measured value of the weight sensor 25 exceeds a preset value, an alarm lamp ("alarm means" in the claims) 5A of the control unit 5 is turned on, and an alarm buzzer ("alarm means" in the claims) 5B of the control unit 5 is sounded.

Storage Box of First Embodiment
5, a prevention wall 40 is provided on the front side of the rear wall of the storage main body 21. This prevents gravel leaking down from the opening 12 of the feeder house 3D from colliding with the upper part of the rear wall of the storage main body 21, thereby suppressing damage to the upper part of the rear wall of the storage main body 21.

The prevention wall 40 is formed of a horizontal portion 40A extending forward from the upper end of the rear wall of the storage main body 21, and a vertical portion 40B extending downward from the front end of the horizontal portion 40A. In addition, in a side view, it is preferable that the vertical length of the vertical portion 40B is formed to be 1/3 to 2/3 of the vertical length of the rear wall of the storage main body 21. This makes it possible to further prevent damage to the upper part of the rear wall of the storage main body 21. Note that FIG. 5 illustrates a form in which the vertical length of the vertical portion 40B is formed to be 1/2 of the vertical length of the rear wall of the storage main body 21, and the lower end of the vertical portion 40B is located at the center of the rear wall of the storage main body 21 in the vertical direction.

<Storage box according to the second embodiment>
As shown in FIG. 6, the front wall of the storage body 21 of the storage box 20 of the second embodiment extends from the upper end of the front wall toward the rear lower side to the front end of the lower wall. As a result, the gravel leaking from the opening 12 of the feeder house 3D moves toward the lower wall along the front wall, so that the lower wall of the storage body 21 can be prevented from being damaged. The intersection angle between the imaginary line in the front-rear direction and the front wall is preferably formed at 30 to 45 degrees. In addition, the storage box 20 of the second embodiment is provided with a prevention wall 40, but the prevention wall 40 can be omitted. The same members as those of the storage box 20 of the first embodiment are given the same reference numerals and the description is omitted.

<Storage box according to the third embodiment >
As shown in Figure 7 (a), a front portion of a rectangular elastic member 42 made of rubber, resin, or spring steel and placed on the inner periphery of the opening on the top surface of the storage main body 21 is fixed to the upper end portion of the front wall of the storage main body 21 of the storage box 20 of the third reference form.

As shown in FIG. 7B, when the amount of gravel leaking from the opening 12 of the feeder house 3D becomes equal to or greater than a predetermined amount, the rear part of the elastic member 42 moves below the fixed part of the elastic member 42, and assumes a rearwardly downwardly inclined posture in a side view. As a result, the gravel leaking from the opening 12 of the feeder house 3D moves toward the lower wall along the elastic member 42, so that the lower wall of the storage main body 21 can be prevented from being damaged. In addition, the storage box 20 of the third reference embodiment is provided with a prevention wall 40, but the prevention wall 40 can be omitted. Note that the same members as those of the storage box 20 of the first embodiment are given the same reference numerals and their explanations are omitted.

<Storage box according to the fourth embodiment>
8(a), an operating lever 44 extending upward and to the right is provided on the right side of the cylindrical portion 24 of the storage box 20 of the fourth embodiment, and the upper portion of the operating lever 44 reaches the control unit 5. In addition, a rotation sensor 45 for measuring the rotation of the operating lever 44 is provided on the lower portion of the operating lever 44.

The upstream plate portion 22 of the storage box 20 is pressed against the underside of the bottom wall 10 of the feeder house 3D via a compression member 17 such as rubber or urethane.

As shown in FIG. 8(b), when the operating lever 44 is rotated counterclockwise when viewed from the axis of the support shaft 16, the upstream plate portion 22 of the storage box 20 moves downward after moving away from the compression member 17. This allows the gravel in the storage box 20 to be easily discharged to the outside by operating the operating lever 44 from the steering unit 5. In addition, the storage box 20 of the fourth embodiment is provided with a prevention wall 40, but the prevention wall 40 can be omitted. Note that the same members as those in the storage box 20 of the first embodiment are given the same reference numerals and their explanations are omitted.

<Storage box according to the fifth embodiment>
9(a), the front wall and upstream plate 22 of the storage main body 21 of the storage box 20 of the fifth embodiment are fixed to the bottom wall 10 of the feeder house 3D. An operating lever 44 extending upward and to the right is provided on the right side of the cylindrical portion 24 of the storage box 20, and an upper portion of the operating lever 44 leads to the control unit 5. A rotation sensor 45 that measures the rotation of the operating lever 44 is provided on the lower portion of the operating lever 44.

The front end of the lower wall of the storage main body 21 is pressed against the underside of the lower wall 10 of the feeder house 3D via a compression member 18 such as rubber or urethane provided at the lower end of the front wall of the storage main body 21 fixed to the lower wall 10 of the feeder house 3D.

As shown in FIG. 9(b), when the operating lever 44 is rotated counterclockwise when viewed from the axis of the support shaft 16, the bottom wall of the storage body 21 of the storage box 20 moves downward after moving away from the compression member 18. This allows the gravel in the storage box 20 to be easily discharged to the outside by operating the operating lever 44 from the steering unit 5. In addition, the storage box 20 of the fifth embodiment is provided with a prevention wall 40, but the prevention wall 40 can be omitted. Note that the same members as those in the storage box 20 of the first embodiment are given the same reference numerals and their explanations are omitted.

As shown in FIG. 10, a communication hole can be formed in the left wall of the storage box 20 and the left wall of the dust discharge box 30, which contains the ventilation fan 31, and they can be connected by a ventilation passage 32 extending in the vertical direction. The transport chain 35 of the feeder house 3D is engaged with the sprockets 33 and 34 of the feeder house 3D, and the transport chain 35 is provided with transport lugs 36 that transport the stalks at a predetermined interval.

The gravel transported to the feeder house 3D is leaked into the storage box 20. When the gravel is leaking, the blower fan 31 is rotated in one direction, for example, clockwise, to exhaust air from the dust discharge box 30 toward the storage box 20 via the feeder house 3D, and the gravel stored in the storage box 20 is discharged to the outside. When the gravel is discharged, the blower fan 31 is rotated in the other direction, for example, counterclockwise, to exhaust air from the dust discharge box 30 toward the storage box 20 via the ventilation passage 32. This allows the gravel transported to the feeder house 3D to leak efficiently into the storage box 20, and the gravel stored in the storage box 20 to be efficiently discharged to the outside.

As shown in FIG. 11, the combine controller 50 is made up of a processing unit 51 consisting of a CPU etc., a memory unit 52 consisting of a ROM, RAM, a hard disk drive, a flash memory etc., and a communication unit 53 for data communication with the outside.

The processing unit 51 performs operations such as comparing the measurement value of the weight sensor 25 with a preset value.

The memory unit 52 stores the weight of gravel that can be stored in the storage box 20, which has been preset.

The input side of the controller 50 is connected via a specified input interface circuit to a weight sensor 25 that measures the weight of the gravel stored in the storage box 20, a changeover switch 31A that switches the rotation direction of the blower fan 31, and a rotation sensor 45 that measures the rotation angle of the operating lever 44.

On the output side of the controller 50, the warning lamp 5A of the control unit 5, the warning buzzer 5B of the control unit 5, the blower fan 31 that blows air toward the storage box 20, the harvesting clutch 55 that transmits the output rotation of the engine to the pre-harvesting processing device 3, and the threshing clutch 56 that transmits the output rotation of the engine to the threshing device 4 are connected via a specified output interface circuit.

When the processing unit 51 determines that the measured value of the weight sensor 25 exceeds a preset value, it causes the warning lamp 5A of the control unit 5 to flash and the warning buzzer 5B to sound. This allows the operator to steer the combine to move it to a specified location, and then operate the control lever 44 to discharge the gravel stored in the storage box 20 to the outside.

When the processing unit 51 determines that the rotation sensor 45 has detected a counterclockwise rotation of the operating lever 44, i.e., that the gravel stored in the storage box 20 is being discharged, it inputs the changeover switch 31A to switch the rotation direction of the blower fan 31. This allows the gravel stored in the storage box 20 to be efficiently discharged to the outside.

When the processing unit 51 determines that the rotation sensor 45 has detected a counterclockwise rotation of the operating lever 44, i.e., that the gravel stored in the storage box 20 is being discharged, it releases the connection between the harvesting clutch 55 and the threshing clutch 56. This prevents grain loss from the stalks harvested by the pre-harvesting processing device 3, and also prevents gravel from entering the threshing device 4 and causing the device to malfunction.

3 Pre-harvesting processing device 3D Feeder house 4 Threshing device 5 Control unit 5A Alarm lamp (alarm means)
5B Alarm buzzer (alarm means)
10 Lower wall 11 Upper wall 12 Opening 16 Support shaft 17 Compression member 20 Storage box 21 Storage main body 22 Upstream plate 23 Downstream plate 24 Cylindrical portion 25 Weight sensor (sensor)
30 Dust discharge box 31 Air blower fan 32 Air blower passage 40 Prevention wall 40A Horizontal portion 40B Vertical portion 42 Elastic member 44 Operation lever

Claims (5)

A combine harvester having a threshing device (4) provided on the rear left side of a pre-harvesting treatment device (3) for harvesting stalks, and a steering unit (5) provided on the rear right side of the pre-harvesting treatment device (3),
an opening (12) is formed in a lower wall (10) of a feeder house (3D) of the pre-harvest treatment device (3) to allow foreign matter transported to the feeder house (3D) to leak out;
A storage box (20) for storing foreign matter leaking from the opening (12) is attached to the lower side of the lower wall (10);
The storage box (20) is formed of a box-shaped storage main body portion (21) with an open top, an upstream plate portion (22) extending forward from the upper end of the front wall of the storage main body portion (21), and a downstream plate portion (23) extending rearward from the upper end of the rear wall of the storage main body portion (21),
A prevention wall (40) having a predetermined length in the vertical direction is provided on the front side of the rear wall of the storage body (21) ,
The combine harvester is characterized in that the prevention wall (40) is formed of a horizontal portion (40A) extending forward from the upper end of the rear wall of the storage main body portion (21) and a vertical portion (40B) extending downward from the front end of the horizontal portion (40A), and the vertical length of the vertical portion (40B) is formed to be 1/3 to 2/3 of the vertical length of the rear wall of the storage main body portion (21) . A support shaft (16) extending in the left-right direction is provided on the lower surface of the lower wall (10),
a cylindrical portion (24) rotatably fitted onto the support shaft (16) is provided at the rear of the downstream plate portion (23);
2. A combine harvester according to claim 1, wherein the cylindrical portion (24) is provided with an operating lever (44) for rotating the cylindrical portion (24) about the axis of the support shaft (16), and an upper portion of the operating lever ( 44 ) faces the steering portion (5). 3. A combine harvester according to claim 2 , wherein a compression member (17) is provided on the lower surface of the lower wall (10) at a portion facing the upstream plate portion (22). A combine harvester as described in claim 3, wherein a sensor (25) for measuring the amount of accumulated foreign matter is provided in the storage main body (21), and when the amount of accumulated foreign matter reaches or exceeds a predetermined amount, an alarm means (5A, 5B) of the control unit ( 5 ) is activated. A dust discharge box (30) having a blower fan (31) installed therein is provided on the upper side of the upper wall (11) of the feeder house (3D),
5. A combine harvester according to claim 4 , wherein communication openings formed in the side walls of the storage box (20) and the dust discharge box (30) are connected by an air passage (32).

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