JP7213614B2 - combine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvesting and threshing culms from a field while traveling and storing the obtained grains in a grain tank for measuring the quality of the grains.

In this type of combine harvester, a temporary storage section is formed to temporarily store the grain fed into the grain tank, and the internal quality of the stored grain is measured by an optical quality measuring device. There is something configured. The bottom of the temporary storage section is composed of a shutter that can be freely opened and closed. When the measurement is completed, the shutter is opened to return the grains to the internal space of the grain tank. In order to allow the shutter to be opened even when the amount of grain stored in the internal space of the grain tank increases, a space for securing discharge was formed with a partition around the internal space of the grain tank (for example, , see Patent Document 1).

JP 2016-67226 A

In the above-described conventional configuration, grains are stored in the grain tank during harvesting work, and even when the grains are stored to a position close to the temporary storage portion, a space for securing discharge is formed. Therefore, the switching operation can be performed without obstruction of the operation of the shutter by the stored grains. Conventionally, a temporary storage part is provided in the upper part of the grain tank in order to prevent the grains stored in the grain tank from hindering the measurement process.

However, in the grain tank, the grains are not always stored evenly over the entire area, and the grains may overlap and be stored in a biased state where the temporary storage part is formed. The lower opening of the securing space may be closed early. If so, the grains for which the measurement has been completed are discharged into the discharge ensuring space, and there is a possibility that the operation of the shutter will be hindered in a short time and the measurement process cannot be performed.

Therefore, in a combine harvester that measures grain quality during harvesting work, it has been desired to continuously perform quality measurement processing over a long period of time.

The characteristic configuration of the combine according to the present invention is
a grain tank for storing grains transported from the threshing device;
a first storage part provided in the grain tank and formed with an intake port, which takes in a part of the grains conveyed from the threshing device from the intake port and temporarily stores them;
A quality measurement unit that detects the quality of the grains stored in the first storage unit,
The first storage unit is provided with a discharge port capable of discharging the stored grains, and a shutter whose position can be changed between an open position that opens the discharge port and a closed position that closes the discharge port,
A second storage portion that communicates with the first storage portion through the discharge port, has a side portion that is partitioned from the interior space of the grain tank, and has a lower portion that communicates with the interior space of the grain tank, provided below the first reservoir,
A path for measuring grains through which the grains to be measured pass in a state separated from the storage space of the grain tank is formed in a state in which it extends long in the vertical direction from the top to the bottom of the grain tank,
The intake port is formed at the upper end of the measurement grain path,
The first storage part is formed in the measurement grain path in a state of being connected to the lower side of the intake port, and the shutter is provided in a state of being positioned above the grain tank, and , the second storage portion is formed in a state of being connected to the lower side of the first storage portion;
The second storage part is formed wider than the first storage part in the front-rear direction and the left-right direction in a plan view, and the grain is formed such that the lower part is wider than the upper part in the front-rear direction and the left-right direction. It extends to the bottom of the grain tank,
The lower end of the second storage part is formed with an opening that communicates the internal space of the second storage part with the storage space of the grain tank, and the opening is opened downward .

According to the present invention, the grains stored in the first storage section and having their quality detected are stored in the second storage section separated from the interior space of the grain tank by switching the shutter to the open position. Ejected. The second storage part extends to the lower part of the grain tank, and is formed wider than the first storage part in the front-rear direction and the left-right direction, and the lower part is wider than the upper part in the front-rear direction and the left-right direction. It's wide. That is, the second reservoir has a large-capacity internal space that is long in the vertical direction and wide in the front-rear direction and the left-right direction. Even if the lower opening portion of the second storage portion communicating with the internal space of the grain tank is closed, the grains carried into and stored in the grain tank are prevented from entering the internal space of the second storage portion. Absent.

As a result, even if the grain is stored in the grain tank and the lower opening of the second storage unit is blocked early, even if the grain is repeatedly discharged after the quality is detected. Since the inside of the second reservoir does not become clogged in a short time and the opening/closing operation of the shutter is not hindered, measurement can be performed over a long period of time.

Therefore, in the case of measuring the quality of grains accompanying reaping work, it has become possible to continuously perform quality measurement processing over a long period of time.

In the present invention, it is preferable that the second storage part is provided in a state separated from the side wall of the grain tank.

According to this configuration, since the second storage part is provided at a position away from the side wall of the grain tank, for example, a place where grains can be easily received and discharged can be freely selected without being restricted by the mounting position with respect to the side wall. can be selected to

The second storage section is wider than the first storage section in the front-rear direction and the left-right direction, and protrudes laterally by the amount of the increased width. grains tend to accumulate at that location. However, since the second storage part is separated from the side wall of the grain tank, even if the grains carried into the grain tank are supplied to the upper protruding part of the second storage part, the grains do not accumulate. can be easily discharged downward.

In the present invention, it is preferable that a side wall of the grain tank located close to the quality measuring unit is provided so as to be switchable to an open state in which the internal space of the grain tank is opened to the outside. be.

According to this configuration, when the side wall located near the quality measuring section is switched to the open state, the internal space of the grain tank is opened to the outside, so maintenance work for the quality measuring section can be easily performed.

In the present invention, the first storage part is provided in the upper part of the grain tank,
It is preferable that the second storage part is provided from the lower side of the first storage part to the lower part of the grain tank.

According to this configuration, the second storage part is elongated in the vertical direction from a high position on the upper side of the grain tank below the first storage part to the lower part of the grain tank. As a result, the internal space of the second storage part becomes large, and the number of grain quality measurements can be increased.

In the present invention, a downwardly narrowed flow guide portion is formed at the bottom of the grain tank,
It is preferable that the second storage portion extends to a position corresponding to the upper end portion of the flow-down guide portion.

A grain discharging device such as a conveying screw is provided at the bottom of the grain tank in order to discharge the grains to the outside. A downwardly converging flow guide is formed for guiding. When the second storage part approaches the guide surface of the flow-down guide part, grains may clog the gap between the second storage part and the guide surface, preventing smooth discharge.

Therefore, according to this configuration, the second storage part is extended to a position corresponding to the upper end of the flow-down guide part, thereby opening a gap between the second storage part and the guide surface to prevent clogging of the grains. While avoiding this, it is possible to secure the capacity of the internal space of the second reservoir.

In the present invention, the first storage part is provided in a state separated from the side wall of the grain tank,
It is preferable that the quality measuring section is provided between the first storage section and the side wall.

According to this configuration, since the quality measuring part is provided between the first storing part and the side wall which are provided apart from each other, the quality measuring part is positioned adjacent to the first storing part to measure the quality of the grains. Quality measurement can be performed satisfactorily, and wiring for transmitting measurement results in the quality measurement unit to an external device can be easily installed using the side wall.

The characteristic configuration of the combine according to the present invention is
a grain tank for storing grains transported from the threshing device;
a first storage part provided in the grain tank and formed with an intake port, which takes in a part of the grains conveyed from the threshing device from the intake port and temporarily stores them;
A quality measurement unit that detects the quality of the grains stored in the first storage unit,
The first storage unit is provided with a discharge port capable of discharging the stored grains, and a shutter whose position can be changed between an open position that opens the discharge port and a closed position that closes the discharge port,
A second storage portion that communicates with the first storage portion through the discharge port, has a side portion that is partitioned from the interior space of the grain tank, and has a lower portion that communicates with the interior space of the grain tank, provided below the first reservoir,
The second storage part is formed wider than the first storage part in the front-rear direction and the left-right direction in a plan view, and the grain is formed such that the lower part is wider than the upper part in the front-rear direction and the left-right direction. It extends to the bottom of the grain tank,
The second storage part is arranged close to one of the sidewalls of the grain tank,
The point is that an opening opening toward the nearest side wall of the side walls is formed in the upper part of the second storage part below the shutter.

According to this configuration, the width between the side wall located near the second storage part is narrow, and grains carried into the grain tank are less likely to accumulate. Therefore, an opening was formed in the upper portion of the second reservoir. By configuring in this way, when a large amount of grains are stored in the inner space of the second storage portion, the grains pass through the opening formed in the upper part of the second storage portion and the side wall. The grains can be stored by effectively utilizing the space between the second storage part and the side wall.

In the present invention, the second storage portion has a widening portion formed on the upper side thereof, the width of which is gradually widened along the front-rear direction and the left-right direction with respect to the first storage portion, and is connected to the lower end of the widening portion. a wide portion having a side wall in a vertical orientation is formed in a state of
It is preferable that the opening is formed in the flared portion.

According to this configuration, the width of the second storage portion gradually widens downward at the widening portion on the upper side, and the wide portion continues to the lower side. While the grains after measurement are stored in the wide part of the second storage part, the measurement processing by the quality measuring device is continuously performed, and when the grains are stored up to the position corresponding to the widening part, the opening flows through the section between the second reservoir and the side wall.

Therefore, a large amount of grains after measurement can be stored by using the wide portion that is wide in both the front-rear direction and the left-right direction and has a large capacity, and the measurement process can be performed over a long period of time. Moreover, when the amount of storage increases, the grains can flow out through the opening. For example, it is easy to avoid disadvantages such as obstruction of the opening and closing operation of the shutter due to an excessive amount of storage.

It is the whole combine side view. It is the whole combine top view. It is a longitudinal rear view of a grain tank. Fig. 2 is a cross-sectional plan view of a grain tank; It is a longitudinal side view of a quality measuring device arrangement|positioning part. It is a cross-sectional plan view of a quality measuring device arrangement|positioning part. Fig. 10 is a side view of the grain tank with the right side wall opened; Fig. 3 is a perspective view of the grain tank with the right side wall opened; It is a longitudinal rear view of a grain tank. It is a perspective view of a measurement grain storage part. It is a side view of the combine of another embodiment. It is a perspective view of the measurement grain storage part of another embodiment. It is a longitudinal side view of the measurement grain storage part of another embodiment. It is a top view of the measurement grain storage part of another embodiment. It is a longitudinal rear view of the measurement grain storage part of another embodiment.

A self-throwing combine harvester according to the present embodiment will be described below with reference to the drawings.

〔overall structure〕
As shown in FIGS. 1 and 2, the combine according to the present invention is equipped with a harvesting unit 3 for harvesting planted grain culms at the front of a traveling machine body 2 which is self-propelled by a pair of left and right crawler traveling devices 1, 1. ing. A driving unit 5 whose periphery is covered with a cabin 4 is provided on the right side of the front part of the traveling body 2. - 特許庁Behind the operating unit 5, a threshing device 6 for threshing the culms harvested by the harvesting unit 3 and a grain tank 7 for storing grains obtained by the threshing processing are arranged laterally. deployed in a state. The grain tank 7 is located on the right side of the machine body, and the threshing device 6 is located on the left side of the machine body. In other words, the operating section 5 is positioned in front of the grain tank 7 . An engine E is provided below a driver's seat 8 in the driver's seat 5 . A grain discharging device 9 for discharging grains stored in the grain tank 7 to the outside of the machine is provided at the rear part of the traveling body 2 and behind the grain tank 7 .

In this embodiment, when defining the longitudinal direction of the aircraft, it is defined along the traveling direction of the aircraft in the working state, and when defining the left-right direction of the aircraft, left and right are defined when viewed in the traveling direction of the aircraft. . That is, the direction indicated by the symbol (F) in FIG. 1 is the front side of the fuselage, and the direction indicated by the symbol (B) in FIGS. 1 and 2 is the rear side of the fuselage.

The harvesting unit 3 includes a weed dividing tool 10 for dividing and guiding the base of the planted grain culm to be harvested, a plurality of lifting devices 11 for lifting the divided planted grain culm to a vertical posture, and a raised device. A trimmer type reaping device 12 for cutting the base of planted grain culms, and a vertical conveyance for feeding the reaping grain culms to a threshing device 6 by conveying them rearward while gradually changing their posture from a vertical posture to a sideways posture. A device 13 and the like are provided. The upper side of the vertical transfer device 13 is covered with a dustproof cover 14 .

Although not shown, the threshing device 6 carries out threshing by threshing the tip side of the supplied harvested culm in a threshing chamber while pinching and conveying the root side of the supplied harvested grain culm by the threshing feed chain. After threshing, the processed material is sorted into grains, straw waste, and the like in the lower sorting section. The grains are conveyed to the outside of the right lateral side of the threshing device 6 by the first grain conveying screw (not shown), and then lifted by the grain lifting conveyor 15 to the grain tank 7 as shown in FIGS. transported inside. The grain tank 7 stores the grain sent from the threshing device 6 . After that, the grains stored in the grain tank 7 are carried outside by the grain discharging device 9 .

As shown in FIG. 1, a bottom screw 16 is provided at the bottom of the grain tank 7 . The bottom screw 16 rotates around the front-rear axis and conveys the stored grain toward the rear side of the machine body. The grain discharging device 9 includes a vertical feeding screw conveyor 9A that receives the grains carried out from the bottom screw 16 and conveys the grains upward, and a base end that is connected to the upper end of the vertical feeding screw conveyor 9A. It is equipped with a horizontal feed screw conveyor 9C that conveys the grains in the horizontal direction from the part to the discharge port 9B of the tip part.
[Grain tank]
Next, the grain tank 7 will be explained.
As shown in FIGS. 3 and 4, the grain tank 7 includes a front wall portion 19 positioned on the front side of the machine body, a rear wall portion 20 positioned on the rear side of the machine body, a right side wall part 21 positioned on the right side of the machine body, and a left side wall portion of the machine body. The periphery is surrounded by each of the left side wall portions 22 located at . Also, the upper side is covered with an upper wall portion 23 . Therefore, a grain storage space Q is formed by being surrounded by the front wall portion 19, the rear wall portion 20, the right wall portion 21, the left wall portion 22, and the upper wall portion .

The grain tank 7 has a storage state in which a portion of the right side wall portion 21 (an opening/closing wall portion described later) closes the storage space Q to allow storage of grains, and the storage space Q is opened to the outside. It is configured to be switchable to a maintenance state in which an operator can access the storage space Q by pressing.

The other side surfaces of the grain tank 7 excluding the right side wall portion 21, that is, the front side wall portion 19, the rear side wall portion 20, the left side wall portion 22, and the upper side wall portion 23 are all connected in series. , which constitutes the tank main body 24 . As shown in FIG. 4, the left side wall portion 22 of the tank main body portion 24 is formed with a recessed portion 25 for disposing the grain unloading conveyor 15 in a state of being inserted therein.

The right side wall portion 21 of the grain tank 7 is positioned so as to face the outside of the traveling body 2 on the right lateral side. The right side wall portion 21 can open a region extending from the upper portion to the lower portion and from the front portion to the rear portion. That is, as shown in FIG. 8, the right side wall portion 21 is formed with an opening 26 that is wide open so as to open an area extending from the upper portion to the lower portion and from the front portion to the rear portion. The opening 26 that is wide open in this manner is closed by an opening/closing wall portion 27 that can be opened and closed to form a storage space Q inside.

As shown in FIG. 8, the right side wall portion 21 includes an opening/closing wall portion 27 and a frame-shaped portion 28 surrounding the periphery of the opening 26. The frame-shaped portion 28 is connected to the other side surface of the tank. It constitutes a part of the body portion 24 . The right side wall portion 21 is configured by closing the opening/closing wall portion 27 and integrally connecting the opening/closing wall portion 27 and the frame-shaped portion 28 as will be described later.

As shown in FIG. 8 , the opening/closing wall portion 27 is supported by the tank body portion 24 so as to be swingable and openable around the vertical axis Y1 positioned behind the grain tank 7 . Two rotation support portions 29 are provided on the tank main body portion 24 with an interval therebetween in the vertical direction. The rotation support portion 29 includes a support base 30 projecting rearward and a shaft member 31 extending upward from the support base 30 . The opening/closing wall portion 27 is provided with a boss member 32 rotatably supported by the shaft member 31, and the opening/closing wall portion 27 is supported by the tank main body portion 24 so as to be swingable and openable.

A front-rear frame 33 extending in the front-rear direction of the fuselage is provided across the front portion and the rear portion of the tank body portion 24 . The front-rear frame 33 is formed in a cylindrical shape, and is provided in a state of extending across the front wall portion 19 and the rear wall portion 20 of the tank body portion 24 . The front-rear frame 33 is provided in a state of being positioned in the upper and lower middle portion of the right end portion of the machine body inside the grain tank 7 . A front end portion of the front-rear frame 33 is inserted through the front wall portion 19 and is provided in a state of being exposed to the outside of the front portion side. The rear end portion of the front-rear frame 33 is inserted through the rear wall portion 20 and is exposed to the outside of the rear portion. The front-rear facing frame 33 is held in a state in which it is prevented from coming off by a retaining pin (not shown) while being inserted through the front wall portion 19 and the rear wall portion 20 .

As shown in FIGS. 3 and 4, the front-rear frame 33 and the left side wall are located at a position closer to the front side than the front-rear center part of the front-rear frame 33 and at a position closer to the rear side than the front-rear center part. A first auxiliary frame 34 made of a round bar that connects with the portion 22 is provided. As shown in FIG. 3 , the first auxiliary frames 34 on both front and rear sides extend leftward and upward from positions where they are connected to the front and rear frames 33 , and are connected to the upper part of the left side wall portion 22 .

As described above, since the front-rear facing frame 33, the two first auxiliary frames 34 and the one second auxiliary frame 35 are provided, the support strength of the tank main body 24 with the wide opening of the right side wall 21 is increased. Thus, even if the front wall portion 19 and the rear wall portion 20 receive a force that protrudes outward due to the weight of the grain, the force can be received and deformation can be prevented.

The opening/closing wall portion 27 is formed in a gentle arc shape when viewed in the front-rear direction. As shown in FIG. 8, an upper reinforcing member 36 is provided at an upper portion of the opening/closing wall portion 27 on the inner side of the tank. The upper reinforcing member 36 is formed by bending a plate material into a substantially U-shaped cross section and is provided in a state of being extended in the front-rear direction. The upper reinforcing member 36 is integrally connected to the wall surface of the opening/closing wall portion 27 over the entire front-rear direction.

A lower side reinforcing member 37 is provided at a lower portion of the opening/closing wall portion 27 on the inner side of the tank. The lower reinforcing member 37 is formed by bending a plate material into a substantially U shape and is provided in a state extending in the front-rear direction. The lower reinforcing member 37 is integrally connected to the wall surface of the opening/closing wall portion 27 over the entire front-rear direction.

A plurality of vertical support plates 39 and 40 extending in the vertical direction are provided on the inner side of the tank of the opening/closing wall portion 27 at intervals in the front-rear direction across the upper reinforcing member 36 and the lower reinforcing member 37. It is Each of the plurality of vertically oriented support plates 39 and 40 is a plate having an L-shaped cross section and is integrally connected to the side surface of the opening/closing wall portion 27 on the inner side of the tank.

Next, a connection structure for connecting the opening/closing wall portion 27 to the tank body portion 24 will be described. A connection device is provided for connecting the swinging side end of the opening/closing wall portion 27 to the tank body portion 24 when the grain tank 7 is in the storage state. That is, as shown in FIG. 9, a front-rear frame 33 provided on the tank main body 24, a locking member 42 provided at the opening/closing wall portion 27 and locked to the front-rear frame 33, and a locking member 42 are arranged. A switching operation mechanism 43 is provided for switching between a locked state in which the frame 33 is locked and a released state in which the locking is released. The locking member 42 is composed of a hook-shaped member having a substantially U-shaped locking groove.

By swinging the operation lever 44, the locking member 42 can be switched between a locking state in which the locking member 42 is caught by the front-rear frame 33 and locked, and a release state in which the locking is released. The operating lever 44 is an L-shaped rod-shaped member. The locking member 42 is connected to an operating lever 44 , and the locking member 42 is switched between a locked state and a released state by turning the operating lever 44 .

As shown in FIG. 8, the opening/closing wall portion 27 is provided with a plurality of rods 45 supported so as to be movable only in the vertical direction. It is When the operation lever 44 is operated to switch from the inclined posture to the vertical posture so that the locking member 42 is in the locked state, the rod 45 is slidably guided by the inclined guide member 46 to move the opening/closing wall portion 27. It is configured to pull toward the tank main body 24 side. As a result, the opening/closing wall portion 27 and the frame-like portion 28 around the opening 49 of the tank main body portion 24 are brought into close contact with each other so that grains can be stored.

When the locking member 42 switches to the released state, the engagement between the upper rod 45 and the lower rod 45 is released, the opening/closing wall portion 27 switches to the open state, and the grain tank 7 switches to the maintenance state. .

[Quality measuring device]
A quality measuring device 50 for measuring the quality of grains is provided at an upper position inside the grain tank 7 . As shown in FIG. 5, the quality measuring device 50 includes a temporary storage unit 51 as a first storage unit that temporarily stores the grains to be measured, and the grains stored in the temporary storage unit 51. A measuring unit 52 is provided as a quality measuring unit that measures quality by measuring. As shown in FIG. 3 , the temporary storage part 51 is located inside the grain tank 7 , and the measuring part 52 is located outside the grain tank 7 . The measurement unit 52 is housed inside a housing case 53 formed in a sealed manner. The temporary storage part 51 is provided with a storage case 54 having a substantially rectangular tubular shape integrally connected to the inner side surface of the storage case 53, and grains can be stored therein.

The temporary storage part 51 has a vertical passage 55 formed vertically through the storage case 54 , a discharge port 56 formed in the middle of the vertical passage 55 , and a closed position closing the discharge port 56 . (see figure) and an open position (not shown) for opening the discharge port 56, and an operation unit 58 for changing the attitude of the shutter 57 by the driving force of an electric motor (not shown). .

The temporary storage part 51 receives and stores some of the grains that are lifted by the grain-lifting conveyor 15 and conveyed into the grain tank 7 . The grain-lifting conveyor 15 lifts the grains to the vicinity of the upper end by the screw conveyor 59, and then feeds the grains through the opening 61 formed in the grain tank 7 by the delivery vane 60 provided at the upper end. Release inward. Some of the grains discharged by the delivery vane 60 are supplied to the temporary storage section 51 .

The temporary storage part 51 has a vertical passage 55 whose upper end is open and a grain intake port 62 is formed. The grain discharged from the grain-elevating conveyor 15 is taken in through the intake port 62, and the grain is received while the shutter 57 is switched to the closed state. grain can be stored in When the shutter 57 is switched to the open state, the stored grains are discharged downward and returned to the inside of the grain tank 7 .

The measurement unit 52 irradiates the grains stored in the storage space 63 with light, and measures the internal quality of the grains by a known spectroscopic analysis method based on the light obtained from the grains. do. A window portion 64 through which light can pass is formed on the side surface of the measurement unit 52 side of the side surfaces forming the storage space 63, and the measurement unit 52 irradiates the grains with light through the window portion 64, Receiving light from the grain.

As shown in FIGS. 5 to 7, the storage case 53 includes a vertically oriented front wall portion 53a located on the front side, a vertically oriented rear wall portion 53b located on the rear side, and a left side of the fuselage (tank inner side). and an inner wall portion 53c extending in the vertical direction, and an outer wall portion 53d located on the right side of the fuselage (the outer side of the tank) and extending in the vertical direction. It is also provided with a plate-like ceiling portion 53e that covers the top and a bottom portion 53f that covers the bottom, and is configured in a substantially box shape. The quality measuring device 50 is accommodated in the storage case 53 .

The front wall portion 53a and the rear wall portion 53b extend downward from the bottom surface portion 53f and are supported in a state of being engaged with the front-rear frame 33. As shown in FIG. That is, the lower ends of the front wall portion 53 a and the rear wall portion 53 b are engaged and supported by the front-rear frame 33 . It can be received and supported by the front-and-rear frame 33 while being engaged with the front-and-rear frame 33 from above. As shown in FIG. 5 , the upper portion of the outer wall portion 53 d is connected to the upper edge portion of the right side wall portion 21 of the grain tank 7 .

[Measurement grain storage part]
As shown in FIGS. 5 to 10, below the temporary storage section 51, a measured grain storage section 66 is provided as a second storage section. The measurement grain storage part 66 communicates with the storage space 63 in the temporary storage part 51 via the discharge port 67, and the side part is separated from the storage space Q (internal space) of the grain tank 7. The lower part communicates with the storage space Q of the grain tank 7 . The measurement grain storage part 66 is formed wider in the front-rear direction and the left-right direction than the temporary storage part 51 in plan view, and the lower part is wider in the front-rear direction and the left-right direction than the upper part. It extends to the bottom of the tank 7 .

To explain, the measurement grain storage part 66 has a widening part 68 formed on the upper side thereof, the width of which gradually widens in the front-rear direction and the left-right direction with respect to the temporary storage part 51 , and the lower end of the widening part 68 A wide portion 69 is formed which has side walls in a vertically oriented state in a continuous state. The upper end of the widening portion 68 is connected to communicate with the lower end of the vertical passage 55 in the storage case 54 .

The measurement grain storage part 66 is composed of a front side plate 70 positioned on the front side, a rear side plate 71 positioned on the rear side, a left side plate 72 positioned on the left side, and a right side plate 73 positioned on the right side. They are connected by bolts and configured in a substantially widening cylindrical shape.

The front side plate 70 includes an inclined surface portion 70a connected to the lower end of the storage case 54 and extending obliquely in the width widening direction (forward) toward the lower side, and a vertical surface portion 70b continuing to the lower end portion of the inclined surface portion 70a and extending along the vertical direction. and The rear side plate 71 includes an inclined surface portion 71a connected to the lower end of the storage case 54 and extending obliquely in the width widening direction (rearward) toward the lower side, and a vertical surface portion 71b continuing to the lower end portion of the inclined surface portion 71a and extending along the vertical direction. and The left side plate 72 also has an inclined surface portion 72a connected to the lower end of the storage case 54 and extending obliquely toward the lower side in the widening direction (leftward direction), and continuing to the lower end portion of the inclined surface portion 72a and extending along the vertical direction. and a vertical surface portion 72b.

The grain storage part 66 to be measured is arranged close to the right side wall part 21 of the grain tank 7 . Then, the right side plate 73 of the measurement grain storage part 66 is formed with an opening 74 vertically spaced from the lower end of the storage case 53, and is widened (to the right) toward the lower side. It has an inclined surface portion 73a extending in an oblique direction, and a vertical surface portion 73b extending in the vertical direction and connected to the lower end portion of the inclined surface portion 73a.

Therefore, in the measurement grain storage part 66, the inclined surface parts 70a, 71a, 72a, and 73a of the front side plate 70, the rear side plate 71, the left side plate 72, and the right side plate 73 form a divergent portion 68, and each vertical surface portion 70b, A wide portion 69 is configured by 71b, 72b, and 73b.

As shown in FIGS. 6 to 10, in the measurement grain storage part 66, the right upper parts of the front side plate 70 and the rear side plate 71 are located in front of the lower end of the front wall 53a of the storage case 53 and the lower end of the rear wall 53b. It extends so as to overlap with the rear side of the part. 5 and 10, the overlapping portions of the front side plate 70 and the rear side plate 71 of the measurement grain storage portion 66 and the front wall portion 53a and the rear wall portion 53b are connected by a plurality of bolts Bo. It is

As shown in FIGS. 7 and 9, a bottom reinforcing member 75 having an L-shaped cross section extending in the direction of inclination is bolted to the inclined surface 7b located on the left side of the bottom screw 16 in the lower portion of the grain tank 7. It is provided in a state where A plurality of bottom reinforcing members 75 are provided at appropriate intervals in the front-rear direction. Support members 76 are provided in a state of being bridged and connected across a pair of bottom reinforcement members 75 provided at locations corresponding to both front and rear sides of the measurement grain storage section 66 . The support member 76 is made of a band plate material that is bent into a substantially U shape when viewed from above. is bolted to the left side plate 72 of the .

Therefore, the measured grain storage part 66 is supported by being connected to the storage case 53 at its upper portion and to the grain tank 7 at its lower portion.

The grain storage part 66 to be measured is provided in a state separated from the side wall of the grain tank 7 . As shown in FIG. 3 , the nearest right side wall portion 21 of the side walls of the grain tank 7 and the right side plate 73 of the measurement grain storage portion 66 are provided in a spaced apart state. As described above, the right side wall portion 21 (opening/closing wall portion 27), which is a side wall located near the measurement portion 52 among the side walls of the grain tank 7, is in an open state in which the inside of the grain tank 7 is opened to the outside. It is provided to be switchable.

The temporary storage part 51 is provided in the upper part of the grain tank 7 , and the measurement grain storage part 66 is provided from the lower side of the temporary storage part 51 to the lower part of the grain tank 7 . Specifically, the measurement grain storage part 66 is extended to a position corresponding to the upper end part of the flow-down guide part 7A.

An opening 74 is formed between the upper portion of the inclined surface portion 73 a of the right side plate 73 and the lower end portion of the storage case 53 in the widening portion 68 of the measurement grain storage portion 66 . By forming the opening 74, for example, as shown in FIG. between the metering grain reservoir 66 and the right side wall 21. Since the quality measuring device 50 is present on the upper side between the measured grain storage part 66 and the right side wall part 21, it becomes difficult to store the grains discharged from the grain lifting conveyor 15, but the above configuration Grain can be effectively stored in this gap by A detection sensor 77 is provided below the opening 74 to detect that the amount of storage in the measurement grain storage section 66 has increased. When the detection sensor 77 detects the quality, the fact is notified by a notification means provided in the operation section 5, such as a display panel, and the quality measurement device 50 stops the measurement.

[Another embodiment]
(1) In the above embodiment, the right side wall portion 21 (the side wall located near the quality measuring section) of the side walls of the grain tank 7 can be switched to an open state in which the inside of the grain tank 7 is opened to the outside. Although the configuration provided is shown, instead of this configuration, a configuration in which the right side wall portion 21 is fixed in the closed state may be employed.

(2) In the above embodiment, the measurement grain storage part 66 (second storage part) is provided in a state separated from the side wall of the grain tank 7, but instead of this configuration, the measurement grain storage part 66 (second storage part) may be configured to be in contact with or connected to one of the side walls of the grain tank 7 .

( 3 ) In the above embodiment, the measurement grain storage part 66 (second storage part) is formed with a widened portion 68 on the upper side, and a wide portion 69 is formed in a state of being connected to the lower end of the widened portion 68. However, instead of this configuration, the measurement grain storage part 66 (second storage part) may be configured by a wide part having a vertically oriented side wall from the upper end to the lower end.

( 4 ) In the above embodiment, a self-threshing combine harvester was shown, but the present invention, for example, as shown in FIG. It can also be applied to a normal combine having a transport section 3A.

In this embodiment, a quality measuring device 100 similar to the quality measuring device 50 in the above embodiment is provided inside the grain tank 7 and fixed to the front wall portion of the grain tank 7 . The quality measuring device 100 is the same as that of the above-described embodiment, so a detailed description is omitted. and a quality measuring unit 102 for measuring quality. The grains are supplied to the grain tank 7 from the discharge section 103 provided above the quality measuring device 100 .

As shown in FIGS. 12 to 15, below the temporary storage section 101, a measurement grain storage section 104 similar to the measurement grain storage section 66 in the above embodiment is provided. This measurement grain storage part 104 uses the front side wall part 19 of the grain tank 7 as a front side wall part to form a space for grain storage. That is, the measurement grain storage part 104 includes a rear side plate 105, a left side plate 106, and a right side plate 107 corresponding to the rear side plate 71, the left side plate 72, and the right side plate 73 of the above embodiment, respectively. The front wall portion 19 of the grain tank 7 is also configured. The formation of the flared portion 68 and the wide portion 69 is also the same as in the above embodiment.

INDUSTRIAL APPLICABILITY The present invention can be applied to a combine that measures the quality of grains when the culms are harvested and threshed from a field while traveling, and the obtained grains are stored in a grain tank.

6 Thresher 7 Grain Tank 7A Downstream Guide Part 21 Side Wall 51, 101 First Reservoir 52, 102 Quality Measurement Part 56 Discharge Port 66, 104 Second Reservoir 68 Widening Part 69 Wide Part 74 Opening

Claims (8)

a grain tank for storing grains transported from the threshing device;
a first storage part provided in the grain tank and formed with an intake port, which takes in a part of the grains conveyed from the threshing device from the intake port and temporarily stores them;
A quality measurement unit that detects the quality of the grains stored in the first storage unit,
The first storage unit is provided with a discharge port capable of discharging the stored grains, and a shutter whose position can be changed between an open position that opens the discharge port and a closed position that closes the discharge port,
A second storage portion that communicates with the first storage portion through the discharge port, has a side portion that is partitioned from the interior space of the grain tank, and has a lower portion that communicates with the interior space of the grain tank, provided below the first reservoir,
A path for measuring grains through which the grains to be measured pass in a state separated from the storage space of the grain tank is formed in a state in which it extends long in the vertical direction from the top to the bottom of the grain tank,
The intake port is formed at the upper end of the measurement grain path,
The first storage part is formed in the measurement grain path in a state of being connected to the lower side of the intake port, and the shutter is provided in a state of being positioned above the grain tank, and , the second storage portion is formed in a state of being connected to the lower side of the first storage portion;
The second storage part is formed wider than the first storage part in the front-rear direction and the left-right direction in a plan view, and the grain is formed such that the lower part is wider than the upper part in the front-rear direction and the left-right direction. It extends to the bottom of the grain tank,
A combine harvester in which an opening that communicates the internal space of the second storage with the storage space of the grain tank is formed at the lower end of the second storage, and the opening opens downward . Said 2nd storage part is a combine of Claim 1 provided in the state spaced apart from the side wall of said grain tank. 3. The combine according to claim 1 or 2, wherein a side wall of said grain tank located close to said quality measuring section is provided so as to be switchable to an open state in which the inside of said grain tank is opened to the outside. . The first storage part is provided in the upper part of the grain tank,
4. The combine according to any one of claims 1 to 3, wherein said second storage portion extends from the lower side of said first storage portion to the lower portion of said grain tank. A downwardly narrowed flow-down guide part is formed at the bottom of the grain tank,
The combine according to any one of claims 1 to 4, wherein the second storage portion extends to a position corresponding to the upper end portion of the downflow guide portion. The first storage part is provided in a state separated from the side wall of the grain tank,
The combine according to any one of claims 1 to 5, wherein the quality measurement section is provided between the first storage section and the side wall. a grain tank for storing grains transported from the threshing device;
a first storage part provided in the grain tank and formed with an intake port, which takes in a part of the grains conveyed from the threshing device from the intake port and temporarily stores them;
A quality measurement unit that detects the quality of the grains stored in the first storage unit,
The first storage unit is provided with a discharge port capable of discharging the stored grains, and a shutter whose position can be changed between an open position that opens the discharge port and a closed position that closes the discharge port,
A second storage portion that communicates with the first storage portion through the discharge port, has a side portion that is partitioned from the interior space of the grain tank, and has a lower portion that communicates with the interior space of the grain tank, provided below the first reservoir,
The second storage part is formed wider than the first storage part in the front-rear direction and the left-right direction in a plan view, and the grain is formed such that the lower part is wider than the upper part in the front-rear direction and the left-right direction. It extends to the bottom of the grain tank,
The second storage part is arranged close to one of the sidewalls of the grain tank,
A combine harvester in which an opening opening toward the nearest side wall among the side walls is formed at a portion below the shutter in the upper portion of the second storage portion. The second storage section has a widening portion formed on the upper side thereof, the width of which increases in the front-rear direction and the left-right direction with respect to the first storage section. forming a wide portion having sidewalls of
8. A combine according to claim 7, wherein said opening is formed in said flared portion.

Images