JP5732444B2 - Combine - Google Patents

Description

  The present invention includes an engine, a cooling fan that is disposed on the lateral outer side of the traveling body of the engine, and that supplies engine cooling air inwardly of the traveling body, a threshing device that threshs the harvested cereal, and is disposed behind the engine. The present invention relates to a combine equipped with a grain tank that collects and stores the grain from the threshing device.

Conventionally, for example, there is a combine disclosed in Patent Document 1.
The combine shown in Patent Document 1 includes a pair of left and right sampling screws provided inside the grain tank and a measuring unit provided on the outer surface side of the tank front side wall outside the grain tank, and includes a moisture detection mechanism. Is configured.
The pair of left and right sampling screws are configured to receive the threshing grains supplied to the grain tank and send them to the measuring unit. The measuring unit is configured to crush the threshing grains from the sampling screw by a pair of electrode rotating bodies that are rotationally driven by an electric motor, and to measure the electrical resistance between both electrode rotating bodies in the squashed state by the measurement control unit. ing.

JP-A-11-266668

  In a combine equipped with an internal quality measuring device to measure the internal quality of the grain supplied to the grain tank, it is possible to measure the internal quality of the harvested grain while performing the harvesting work. it can. Therefore, for example, a collection place where a grain having measured internal quality is desired is investigated in advance by the time the harvesting operation is completed, and immediately after the harvesting operation is completed, the harvested grain is immediately returned to the collected collection place. It is advantageous that it can be conveyed.

  When an internal quality measuring device is installed in the front part of the grain tank, the internal quality measuring device is easily affected by the cooling air of the engine located in front of the grain tank. Temperature rise is likely to occur in the device.

  The objective of this invention is providing the combine which can prevent the temperature rise of an internal quality measuring device effectively, providing an internal quality measuring device in the front part of a grain tank.

The combine according to the present invention is:
Engine,
A cooling fan that is arranged on the lateral outer side of the traveling body of the engine and supplies engine cooling air to the traveling body laterally inward;
A threshing device for threshing the harvested cereal meal;
A grain tank that is deployed behind the engine and collects and stores the grain from the threshing device;
An internal quality measuring device for measuring the internal quality of the grain supplied from the threshing device to the kernel tank,
In the internal quality measuring device, a detection unit that causes a detection medium to act on the grain supplied to the grain tank, a measurement control unit that measures internal quality of the grain based on detection information by the detection unit, and A housing that houses the detection unit and the measurement control unit,
The housing includes a suction port capable of introducing a control unit cooling air for cooling the measurement control unit, and a discharge port capable of discharging the control unit cooling air,
In the front part of the grain tank, with a measurement chamber in a state opened to the front of the traveling machine body, the internal quality measuring device is deployed in the measurement chamber,
The suction port is provided in a portion of the housing near the lateral side of the traveling machine body.

  According to this structure, since an internal quality measuring device is arranged in the measurement room provided in the front part of a grain tank, an internal quality measuring device can be arranged in the front part of a grain tank.

  According to this configuration, the engine cooling air is supplied inward of the traveling machine body, and the suction port is provided in the part of the housing near the traveling machine body laterally outside, so that the low temperature control is performed from the part not affected by the engine heat radiation. The cooling air at a low temperature can be supplied to the measurement control unit in a state in which the cooling air is sucked and is not easily affected by the heat of the engine cooling air. Since the measurement chamber is open to the front of the traveling machine body, the cooling air that has been cooled by the control unit discharged from the discharge port easily flows out of the measurement chamber, and the cooling air that has been cooled by the control unit is easily measured. Can be difficult to stay in. If the cooling air that has been cooled is less likely to stay in the measurement chamber, it is easy to avoid a situation (short circuit) in which the cooling air that has been cooled is sucked from the suction port and re-enters the housing. Therefore, as a whole, the temperature rise of the internal quality measuring device, particularly the measurement control unit, can be effectively prevented.

  Therefore, according to the present invention, the internal quality measuring device can be arranged in the front part of the grain tank, and the internal quality can be measured in an advantageous state such as easy visibility from the operating part of the internal quality measuring device. Nevertheless, it is possible to effectively prevent measurement failure and failure due to temperature rise of the internal quality measuring device.

  In the present invention, it is preferable that a filter is provided in the suction port.

  According to this structure, it can prevent with a filter that dust is attracted | sucked with a control part cooling wind.

  Therefore, according to the present invention, it is possible to make it difficult for the internal quality measuring device to malfunction due to dust suction.

  In the present invention, it is preferable that the filter is detachable.

  According to this configuration, the filter can be easily removed and cleaned or replaced.

  Therefore, according to the present invention, it is possible to effectively prevent the occurrence of a failure due to dust suction by cleaning or replacing the filter.

  In the present invention, the measurement chamber is arranged on the front side wall of the grain tank so as to enter the inner side of the grain tank, and a suction port side portion of the measurement chamber where the suction port is located is provided. It is preferable that the depth entering the inside of the grain tank is set to be shallower than the depth at which the outlet side portion where the outlet is located in the measurement chamber enters the inside of the grain tank.

  According to this configuration, the suction port side portion is positioned closer to the outside of the measurement chamber than the discharge port side portion, and the suction of the control unit cooling air by the suction port can be performed from the outside of the measurement chamber as much as possible. In addition, it is easy to reach the suction port and filter from outside the measurement room.

  Therefore, according to the present invention, the low-temperature control unit cooling air is sucked from the outside of the measurement chamber, and the internal quality measuring device is effectively cooled. It is easy to reach from the outside of the measurement room to clean and remove the suction port and filter.

  In the present invention, in a plan view, the shape of the traveling vehicle body inner side portion of the front side wall is formed into an inclined shape positioned on the rear side of the traveling vehicle body toward the inner side of the traveling vehicle body, and the traveling aircraft body of the front wall is formed. The shape of the laterally outer portion is formed in a shape parallel to the lateral direction of the traveling aircraft body or an inclined shape that is looser than the inclined shape of the laterally lateral portion of the traveling aircraft body, and at least the suction port is lateral to the traveling aircraft body. Provided in a state extending across the traveling machine body lateral inner part and the traveling machine body lateral outer part so as to be located in the outer part, and the rear wall of the measurement chamber has a shape parallel to the inclined shape of the traveling machine body lateral inner part Preferably formed.

  According to this configuration, by adopting a measurement chamber with a simple shape in which the rear wall is formed in a shape parallel to the inclined shape of the lateral inner side portion of the traveling machine body as the measurement chamber, suction where the suction port of the measurement chamber is located The depth at which the mouth side part enters the inside of the grain tank can be made shallower than the depth at which the outlet side part where the outlet of the measurement chamber is located enters the inside of the grain tank.

  Therefore, according to the present invention, the control unit can draw the cooling air from the outside of the measurement chamber as much as possible, and adopts a simple-shaped measurement chamber that can easily reach the suction port and the filter from outside the measurement chamber. And can be obtained inexpensively.

  In the present invention, it is preferable that a guide pipe for guiding the control unit cooling air from the discharge port to the outside of the measurement chamber is provided.

  According to this configuration, the cooled control unit cooling air discharged from the discharge port is caused to flow out of the measurement chamber by the guide tube, and the cooled control unit cooling air flows to the suction port and flows into the housing. It is easy to avoid re-inflow.

  Therefore, according to the present invention, it is possible to effectively prevent the temperature rise by avoiding that the cooling air that has been cooled is re-flowed into the housing and the cooling efficiency is lowered.

  In the present invention, it is preferable that the discharge port of the guide tube is opened downward from the traveling machine body.

  According to this configuration, since the discharge port of the guide pipe faces downward, rain water and washing water do not flow into the guide pipe, and water does not enter the housing from the safety inner pipe.

  Therefore, according to the present invention, it is easy to avoid measurement failure and failure due to water immersion of the internal quality measuring device.

  In the present invention, it is preferable that the discharge port is disposed in a portion of the upper surface of the housing close to the lateral end of the traveling machine body.

  According to this configuration, the control unit that has been easily cooled due to the rise of the temperature after the cooling operation is finished and the temperature rises after the discharge port is located at a high portion of the housing, and the control unit that has been cooled. Cooling air can be made difficult to stay in the housing. The discharge port is located away from the suction port in the lateral direction of the traveling machine body, and it is easy to avoid the cooling air that has been cooled and discharged from the discharge port flows into the suction port and re-enters the housing.

  Therefore, according to the present invention, it is easy to avoid a decrease in cooling efficiency due to retention or re-inflow of the control unit cooling air that has been cooled, and it is possible to effectively prevent an increase in temperature of the internal quality measuring device.

  In the present invention, it is preferable to provide a blower guide for guiding the engine cooling air inward of the traveling machine body.

  According to this configuration, the engine cooling air flows inward of the traveling machine body under the guidance of the air blowing guide, so that the engine cooling air flows into the internal quality measuring device, and the internal quality measuring device is affected by the engine cooling air. Easy to avoid receiving.

  Therefore, according to the present invention, it is easy to avoid the internal quality measuring device from rising in temperature due to the influence of engine cooling air.

  In the present invention, the detection unit is preferably an optical sensor that measures the internal quality by irradiating the grain with measurement light as a detection medium.

  According to this configuration, the internal quality can be measured without causing grain damage and quality degradation caused by applying the detection medium to the grain.

  Therefore, according to the present invention, the grain on which the detection medium has acted can be handled in the same manner as the harvested grain when the internal quality is not measured, and it is not wasted.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a front view which shows a grain tank. It is a cross-sectional top view which shows the front part of a grain tank. It is a cross-sectional top view which shows a measurement chamber. It is a side view which shows a sampling part and an internal quality measuring device. It is a perspective view which shows the sampling part and internal quality measuring device of a removal state. It is a vertical side view which shows a sampling part and an internal quality measuring device. It is a block diagram which shows an internal quality measuring device. It is a side view which shows the sampling part of the state which closed the discharge port. It is a side view which shows the sampling part of the state which opened the discharge port. (A) is a front view which shows the switching mechanism of the state which operated the opening-and-closing plate to the downward opening position, (b) is a front view which shows the switching mechanism of the state which operated the opening-and-closing plate to the raising / closing position. It is explanatory drawing which shows arrangement | positioning of a grain sensor. It is a vertical side view which shows the internal quality measuring device and sampling part provided with another implementation structure. It is a vertical side view which shows the sampling part provided with another implementation structure. It is the schematic which shows the sampling part provided with another implementation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the entire combine according to the embodiment of the present invention. FIG. 2 is a plan view showing the entire combine according to the embodiment of the present invention. As shown in FIGS. 1 and 2, a combine according to an embodiment of the present invention includes a traveling machine body configured to self-run by a pair of left and right crawler traveling devices 2, 2, and a front part of a body frame 1 of the traveling machine body. And a threshing device 6 and a grain tank 10 supported at the rear part of the machine body frame 1. A driving unit 4 equipped with a driving seat 4a and a driving unit 3 equipped with an engine 31 arranged below the driving seat 4a are provided on one side of the front of the traveling machine body.

The driving unit 3 will be described.
As shown in FIGS. 1 and 2, the prime mover 3 includes an engine bonnet 32 configured to support the driver's seat 4 a with a top plate portion, an intake case 33 disposed on the lateral side of the traveling body of the engine bonnet 32, and an engine 31. The radiator 34 and the cooling fan 35 are provided on the lateral outer side of the traveling machine body. The radiator 34 and the cooling fan 35 are arranged on the inner side of the traveling machine body from the intake case 33.

  The cooling fan 35 is driven to rotate by the driving force output from the engine 31 to suck and suck the engine cooling air from the outside of the engine bonnet 32 through the upper and lower intake openings 33a provided in the intake case 33. The engine cooling air is supplied to the radiator 34 and the engine 31 by supplying the engine cooling air into the engine bonnet 32 inward of the traveling machine body.

  Inside the engine bonnet 32, a blower guide 36 is provided which is disposed on the rear upper side of the engine 31 and is formed in a long shape in the lateral direction of the traveling machine body. The blower guide 36 includes a vertically extending vertical side portion located behind the engine 31 in a side view of the traveling vehicle body, and a longitudinal side portion facing the traveling body front and rear positioned above the engine 31. The air blowing guide 36 guides the engine cooling air supplied from the cooling fan 35 to the engine 31, causes the engine cooling air to flow around the engine 31 toward the lateral side of the traveling machine body, and causes the engine cooling air after the cooling operation to flow. The engine bonnet 32 is allowed to flow out of the engine bonnet 32 through an opening located at the inner side end of the traveling machine body.

The drive system will be described.
A traveling mission case 8 is provided at the front of the body frame 1, and driving force from the engine 31 is input to the traveling mission case 8 and transmitted from the traveling mission case 8 to the crawler driving wheels 2 a of the left and right crawler traveling devices 2. Thus, the left and right crawler traveling devices 2 are configured to be driven. The driving force input to the traveling mission case 8 is branched from the traveling transmission system and transmitted to the input shaft (not shown) of the cutting unit 5 to drive the cutting unit 5. A threshing mission case (not shown) is provided on the front side of the threshing device 6, the driving force from the engine 31 is transmitted to the threshing mission case, and transmitted from the threshing mission case to the threshing device 6 and the waste straw processing device 7. It is constituted as follows.

The threshing device 6 will be described.
The threshing device 6 is provided in the left side portion of the machine body frame 1. The threshing device 6 is provided with a feed chain (not shown) provided on the laterally outer side of the threshing machine body, and the stocker side of the harvested cereal straw conveyed from the cutting part 5 is sandwiched by the feed chain and conveyed to the traveling machine body rear side. On the other hand, the tip of the harvested cereal culm is supplied to the handling room (not shown) of the threshing unit, and the threshing process is performed by handling by a handling cylinder (not shown) that is driven to rotate. The threshing device 6 includes a sorting unit (not shown) provided inside the threshing machine body, and the threshing processing product from the threshing unit is made into a single grain by swinging sorting and wind sorting by the sorting unit, and straw Sorted into dust and other dust, the single grain is dropped to the bottom of the threshing machine body, and the dust is discharged to the rear outside of the threshing machine body.

  The threshing apparatus 6 supplies the threshing waste straw discharged from the handling room of the threshing section by the feed chain to the waste straw processing apparatus 7 installed at the rear part of the threshing apparatus 6. The waste straw processing apparatus 7 is configured to be switchable between a processing state in which the threshing waste straw is cut and released and a processing state in which the threshing waste straw is released in a long straw state.

  As shown in FIG. 2, the threshing device 6 includes a No. 1 screw conveyor 9 provided at the bottom of the threshing machine body, and the cerealized grains are fed along the lateral direction of the threshing machine body by the No. 1 screw conveyor 9. The feed is transversally fed to the grain tank 10 and supplied to the cerealing device 12.

The grain tank 10 will be described.
The grain tank 10 is disposed behind the engine 31 in a portion located on the right side of the traveling machine body with respect to the threshing device 6 in the machine body frame 1. As shown in FIGS. 3 and 7, the shape of the grain tank 10 in a front view is formed such that the lateral end portion 10 a on the upper end side protrudes from the lower end side to the lateral side of the traveling machine body. A receiver 14 which will be described later is provided at a portion of the front side wall 10F of the grain tank 10 that is located at the lateral end 10a. A vertically long inspection window 15 is provided in a portion of the front side wall 10 </ b> F of the grain tank 10 that is located on the side of the receiver 14 so that the inside of the grain tank 10 can be seen.

  A cerealing device 12 is arranged on the left side of the grain tank 10. The conveying terminal part of the cerealing device 12 is connected to the lateral end part 10 a of the grain tank 10. As shown in FIGS. 2 and 4, the cerealing device 12 includes a lifting screw 16. The lifting screw 16 is configured to be driven by a driving force transmitted from the first screw conveyor 9 via a bevel gear transmission mechanism (not shown). The cerealing device 12 feeds the grain from the No. 1 screw conveyor 9 to the discharge port 12a of the cerealing device 12 by the lifting screw 16. A rotary blade 17 is provided at a portion of the screw shaft 16a of the lifting screw 16 located at the discharge port 12a so as to be integrally rotatable, and the rotary blade 17 is driven to rotate the grains from the lifting screw 16 counterclockwise. Is discharged from the discharge port 12a to the grain storage space 10b of the grain tank 10 and supplied. Therefore, the grain tank 10 collects and stores the grain from the threshing device 6 in a state where it is leveled into the grain storage space 10b.

  As shown in FIGS. 1 and 2, a bottom screw 18 is provided at the bottom of the grain tank 10 so as to face the traveling machine body. A vertical screw conveyor 19a is installed on the rear outer side of the grain tank 10, and the horizontal screw conveyor 19b is extended from the upper end of the vertical screw conveyor 19a. It is configured to be carried out by the bottom screw 18, the vertical screw conveyor 19a, and the horizontal screw conveyor 19b.

  That is, as shown in FIG. 3, a relay transmission case 20 is provided on the front side of the lower portion of the threshing device 6, and the driving force transmitted from the engine 31 to the relay transmission case 20 is transmitted to the bottom via the belt tension type discharge clutch 21. It is configured to transmit to the screw 18. Accordingly, the bottom screw 18 is driven when the discharge clutch 21 is turned on and stopped when the discharge clutch 21 is turned off. When driven, the bottom screw 18 discharges the grains of the grain tank 10 into the relay gear case 24 connected to the lower part of the rear side wall 10R of the grain tank 10.

  The vertical screw conveyor 19 a is driven and driven from the bottom screw 18 via a bevel gear transmission mechanism (not shown) built in the relay gear case 24, and the grains from the bottom screw 18 are transferred via the relay gear case 24. Inherit and transport. The horizontal screw conveyor 19b is driven by being driven from the vertical screw conveyor 19a through a bevel transmission gear mechanism (not shown), inherits the grains from the vertical screw conveyor 19a and feeds it horizontally, and is provided at the end of conveyance. From the discharge cylinder 19c.

  The horizontal screw conveyor 19b is connected to the vertical screw conveyor 19a so as to be swingable up and down about the vertical axis P1, and is swinged by the lift cylinder 22 to change the height of the discharge position by the discharge cylinder 19c. . The vertical screw conveyor 19a is connected to the relay gear case 24 so as to be rotatable around the pivot axis P2. By turning the vertical screw conveyor 19a by a turning operation mechanism equipped with an electric motor 23, the horizontal screw conveyor 19b can be turned with respect to the traveling machine body around the turning axis P2.

  The elevating cylinder 22 and the turning operation mechanism transmit a receiver 14 (see FIG. 3) arranged on the front side wall 10F of the grain tank 10 and a wireless signal for turning and swinging the horizontal screw conveyor 19b to the receiver 14. It is comprised so that it may operate with the operating device provided with the remote controller (not shown) to perform.

  The grain tank 10 is supported on the rear end side of the grain tank 10 by the relay gear case 24 being pivotally supported by the support portion 1G provided at the rear end portion of the machine body frame 1 so as to be rotatable around the pivot axis P2. The pivot axis P2 is positioned so as to be swingable and openable with the opening and closing axis. Therefore, the grain tank 10 can be changed in position between the work position and the maintenance position by swinging open and close.

  That is, as shown by a two-dot chain line in FIG. 2, the grain tank 10 is swung around the turning axis P2 toward the lateral outer side of the traveling machine body, and the front end including the front side wall 10F is the lateral side of the traveling machine body. When you go outside, you are in the maintenance position. When the grain tank 10 is in the maintenance position, the part located on the right side of the threshing device 6 of the traveling machine body, the cerealing device 12, the first screw conveyor 9 and the like are opened, and the machine body part, the cerealing device 12 is opened. The maintenance work such as the first screw conveyor 9 is facilitated.

  As shown by a solid line in FIG. 2, the grain tank 10 is swung around the pivot axis P <b> 2 toward the inside of the traveling machine body, the front end portion enters the inside of the traveling machine body, and the front side wall 10 </ b> F is the engine 31. When it is located rearward, it becomes the working position. When the grain tank 10 is in the working position, the grain tank 10 is closed in the maintenance position.

  As shown in FIG. 3, a lock mechanism 26 is provided across the front side wall 10 </ b> F of the grain tank 10 and the threshing machine body. When the grain tank 10 is opened and closed, the operation lever 27 connected to the hook 26a constituting the lock mechanism 26 via the rod 27a is swung, and the hook 26a is swung to the release position to lock the lock mechanism 26. The closing lock of the grain tank 10 by 26 is released. Further, the lock pin 28 provided at the lower part of the grain tank 10 is removed from the pin hole provided in the machine frame 1. Further, by removing the transmission belt 21a constituting the discharge clutch 21 from the belt pulley, the grain tank 10 can be opened and closed.

  A load cell 25 (see FIGS. 2 and 3) is supported on a part of the machine body frame 1 located below the front end of the grain tank 10 closed at the work position, and is stored in the grain tank 10 by the load cell 25. The weight of the selected grain is measured based on the load of the grain tank 10. As shown in FIG. 3, an internal quality measuring device 40 is installed in the front part of the grain tank 10, and the internal quality of the grain that has been carried out of the threshing device 6 and supplied to the grain tank 10 by the internal quality measuring device 40. It is configured to measure. The measurement result by the load cell 25 and the internal quality measuring device 40 is configured to be displayed by a display device 39 (see FIG. 2) provided in the operation unit 4.

The internal quality measurement of a grain is demonstrated.
As shown in FIGS. 4 and 8, a sampling unit 50 is provided in the grain storage space 10 b of the grain tank 10.

  The sampling unit 50 is provided at a receiving holding part 52 formed by a cylindrical holding part forming body 51 vertically facing the grain tank, a full sensor 53 provided on the upper part of the receiving holding part 52, and a lower part of the receiving holding part 52. And an opening / closing plate 54 for opening and closing the discharge port 52a, and a switching mechanism 60 for operating the opening / closing plate 54. Therefore, the sampling unit 50 samples and holds a part of the grain supplied to the grain tank 10 as a measurement target of the internal quality measuring device 40, and holds the sample when measurement by the internal quality measuring device 40 is finished. The grain that has been discharged is discharged into the grain storage space 10 b of the grain tank 10.

  That is, the receiving holding part 52 is provided with the receiving port 52b facing upward of the grain tank provided in the upper part. The grains discharged to the grain storage space 10b of the grain tank 10 by the rotary blades 17 of the grain raising device 12 and flying above the sampling unit 50 enter the receiving and holding unit 52 from the receiving port 52b. The switching mechanism 60 is controlled to be closed by a sampling control unit (not shown), and the opening / closing plate 54 is switched to the ascending / closing position by the switching mechanism 60 to close the discharge port 52a. Therefore, the receiving holder 52 receives and holds the grains that have entered.

  When the full sensor 53 detects the full state of the grain in the receiving and holding unit 52 and the measurement by the internal quality measuring device 40 of the grain held by the receiving and holding unit 52 is finished, the switching mechanism 60 is opened by the sampling control unit. Under the control, the opening / closing plate 54 is switched to the lowered open position by the switching mechanism 60 to open the discharge port 52a. The opened discharge port 52 a allows the receiving holder 52 to communicate with the grain storage space 10 b of the grain tank 10 via a drop passage 55 formed by the holding part forming body 51 below the receiving holder 52. Accordingly, the receiving and holding unit 52 drops and discharges the held grain to a portion located below the sampling unit 50 in the grain storage space 10b.

  When the set discharge time set as the discharge time necessary for discharging the measured grain has elapsed since the discharge port 52a was opened, the switching mechanism 60 is controlled to the closed side by the sampling control unit, and the opening / closing plate 54 is moved. The discharge mechanism 52 is closed by the switching mechanism 60 and switched to the raised closed position. Therefore, the receiving and holding unit 52 continues to accept and hold the grains entering from the receiving port 52b as a measurement target.

  In this way, the sampling unit 50 uses the internal quality measuring device 40 to convert a part of the grain supplied to the grain tank 10 by opening / closing the discharge port 52a by opening / closing control of the opening / closing plate 54 by the sampling control unit. Are sampled and temporarily held in the receiving and holding unit 52, and this temporary grain holding is repeated. Therefore, the measured grain discharged by the sampling unit 50 accumulates in a portion of the grain storage space 10b in the grain tank 10 that is located below the receiving holding part 52. As the number of times of sampling increases, it also accumulates in the fall passage 55.

  As shown in FIGS. 8 and 9, the internal quality measuring device 40 includes a detection unit 41 with a detection port 41 a facing the receiving holding unit 52, and a light source unit that supplies measurement light to the detection unit 41 via a transmission cable 42. 43 and a measurement control unit 45 that introduces measurement light from the detection unit 41 via the reception cable 44.

The detection unit 41 is configured by an optical sensor.
That is, the detection unit 41 includes a light projecting unit 41b and a light receiving unit 41c provided on the back side of the transparent plate attached to the detection port 41a. The light projecting unit 41 b is supplied with measurement light as a detection medium from the light source unit 43, receives the supplied measurement light, and irradiates the grain held by the holding unit 52. The light receiving unit 41 c receives the measurement light reflected by the grain and sends the received measurement light to the measurement control unit 45.

  The measurement control unit 45 measures the spectral spectrum of the measurement light introduced from the light receiving unit 41c, and the component based on the component contained in the grain based on the spectral spectrum measured by the spectral measurement unit 46. And an arithmetic unit 47 for performing arithmetic processing.

  That is, the internal quality measuring device 40 measures the internal quality using a component analysis method using the absorption spectrum of near-infrared light, projects the near-infrared light onto the grain, and transmits the transmitted light. The absorption spectrum is analyzed based on the analysis, and the amount of components such as moisture, protein, amylose, etc. contained in the grain is measured based on the analysis result. Furthermore, the internal quality measuring device 40 is configured to discriminate the taste of the grain based on the measurement results of the amounts of components such as moisture, protein, and amylose.

The internal quality measuring device 40 will be described in detail.
As shown in FIGS. 5 to 8, the internal quality measuring device 40 is provided in a measuring chamber 70 provided in the front part of the grain tank 10. The measurement chamber 70 is arranged on the front side wall 10F of the grain tank 10 (hereinafter referred to as the front side wall 10F). Specifically, the measurement chamber 70 is disposed at a site on the side of the inspection window 15 in the front side wall 10F. The measurement chamber 70 is located on the lateral lateral side of the travel from the inspection window 15.

  The measurement chamber 70 is formed by a measurement chamber forming body 71 fitted in a mounting hole 10c provided in the front side wall 10F. The measurement chamber forming body 71 extends toward the front side of the grain tank from the rear wall 71R located on the inner side of the grain tank from the front side wall 10F of the grain tank 10 and the entire circumference of the rear wall 71R. A peripheral wall 71S that reaches the front side wall 10F is provided and is configured in a box shape.

  That is, the measurement chamber 70 is located inside the front side wall 10 </ b> F of the grain tank 10. Furthermore, the measurement chamber 70 is in a state of being partitioned by the grain storage space 10b of the grain tank 10 and the measurement chamber forming body 71 and opened to the front of the traveling machine body.

  The measurement chamber forming body 71 is detachably fitted to the mounting hole 10c from the front side of the traveling machine body, and a connection flange 71F provided over the entire circumference of the peripheral wall 71S is tightened and connected to the surface side of the front wall 10F by a connection bolt. By doing so, it is configured to be fixed to the grain tank 10. Accordingly, the measurement chamber forming body 71 can be detached from the front side of the traveling machine body with respect to the grain tank 10. An anti-vibration rubber 72 (see FIGS. 7 and 8) for suppressing vibration transmission to the internal quality measuring device 40 is interposed between the connecting flange 71F of the measurement chamber forming body 71 and the front side wall 10F of the grain tank 10. It is. The anti-vibration rubber 72 is provided over the entire circumference of the mounting hole 10c. The anti-vibration rubber 72 has a sealing function for sealing between the measurement chamber forming body 71 and the front side wall 10F.

  The internal quality measurement device 40 includes a housing 74 that houses a spectroscopic measurement unit 46 and a calculation unit 47 that constitute a detection unit 41, a light source unit 43, and a measurement control unit 45. The housing 74 includes a connection flange 74a provided over the entire periphery of the rear plate. The housing 74 includes a connection flange 74a connected to the rear wall, and the connection flange 74a is connected to the rear wall 71R of the measurement chamber forming body 71 by a connecting bolt so as to be detachably supported on the measurement chamber forming body 71. It is. Detection holes into which the detection ports 41a of the detection unit 41 are fitted are provided in the rear wall 71R of the measurement chamber forming body 71 and the rear plate of the housing 74 facing the rear wall 71R of the measurement chamber forming body 71.

  Therefore, the internal quality measuring device 40 is stored in the measurement chamber 70 in a state partitioned from the grain storage space 10 b of the grain tank 10, and the grain quality of the grain tank 10 is higher than that of the front side wall 10 </ b> F of the grain tank 10. It has entered inside, and it is difficult for dust to adhere to the internal quality measuring device 40. The internal quality measuring device 40 can be attached to and detached from the grain tank 10 by an operation of detaching the measurement chamber forming body 71 from the grain tank 10.

  As shown in FIG. 3, an electric cooling fan device 75 is provided in the housing 74, and the measurement control unit 45 is configured to be cooled.

  More specifically, as shown in FIGS. 3 and 6, a plurality of suction ports 76 are arranged in the vertical direction and depth direction of the measurement chamber 70 in a portion of the housing 74 that is closer to the lateral outer side of the traveling machine body. The suction port 76 sucks the control unit cooling air from the outside to the inside of the housing 74 by the intake force generated by the air blowing action of the cooling fan device 75. The suction port 76 is located in a portion of the housing 74 that is closer to the laterally outer side of the traveling machine body, and the engine cooling air flows toward the laterally inner side of the traveling machine body. Is sucked. The control unit cooling air sucked into the housing 74 flows around the measurement control unit 45 and cools the measurement control unit 45.

  As shown in FIGS. 3, 5, and 8, a discharge port 77 is provided in a portion of the upper surface 74 </ b> U of the housing 74 that is closer to the inner side of the traveling machine body. A guide tube 78 extends from the discharge port 77 toward the outside of the measurement chamber 70. A discharge port 78 a that opens downward from the traveling machine body is provided at the extended end of the guide tube 78. A part of the discharge port 78 a is outside the measurement chamber 70.

  The discharge port 77 discharges the control unit cooling air after cooling the measurement control unit 45 to the outside of the housing 74 by the exhaust force generated by the air blowing action of the cooling fan device 75. The guide tube 78 discharges the control unit cooling air from the discharge port 77 downward to the outside of the measurement chamber 70. The discharge port 77 is positioned near the lateral inner end of the traveling body of the housing 74, and the guide tube 78 discharges the control unit cooling air to the outside of the measurement chamber 70, whereby the cooling-completed control discharged from the housing 74 is performed. The partial cooling air hardly flows into the suction port 76 and hardly flows into the housing 74 again. Since the discharge port 78a of the guide pipe 78 faces downward, rain water and washing water do not flow into the guide pipe 78, and rain water and washing water do not enter the housing 74.

  The suction port 76 is provided in a filter case 79 that forms the lateral end of the housing 74. The filter case 79 accommodates a filter 80 that acts on the suction port 76. The filter case 79 is configured to be detachably connected to the main body of the housing 74 by a buckle-type connector 81 that acts on both upper and lower ends of the filter case 79.

  That is, the filter 80 can be removed from the main body of the housing 74 together with the suction port 76 by switching the upper and lower connectors 81 to the released state and removing the filter case 79 from the main body of the housing 74. On the other hand, it can be detached.

  As shown in FIG. 5, the depth at which the measurement chamber 70 enters the inside of the grain tank 10 from the front side wall 10 </ b> F of the grain tank 10 and the depth at which the internal quality measuring device 40 enters the inside of the grain tank 10 throughout. It is set to. Of the depth at which the measurement chamber 70 enters the inside of the grain tank 10 from the front side wall 10F of the grain tank 10, the depth D1 at which the suction port 76 in the measurement chamber 70 is located is measured. It is set to be shallower than the depth D2 at which the discharge port 77 of the chamber 70 is located.

Specifically, as shown in FIGS. 2, 5, and 7, the shape of the traveling machine body inner side portion 10 </ b> Fa in the front side wall 10 </ b> F of the grain tank 10 in the plan view is the rear side of the traveling machine body toward the inner side of the traveling machine body. The shape of the traveling vehicle body lateral outer side portion 10Fb in the front side wall 10F is formed in a shape parallel to the traveling vehicle body direction. The measurement chamber 70 is provided in a state extending across the traveling machine body lateral inner part 10Fa and the traveling machine body lateral outer part 10Fb, and at least the suction port 76 is configured to be located in the traveling machine body lateral outer part 10Fb. By setting the length from the connecting flange 71F of the measurement chamber forming body 71 to the rear wall 71R to a predetermined length, the rear wall 71R of the measurement chamber forming body 71 as the rear wall of the measurement chamber 70 is moved to the inner side portion of the traveling machine body. It is formed in a shape parallel to the 10Fa inclined shape.
In order to make the penetration depth D1 at the suction port side portion of the measurement chamber 70 smaller than the penetration depth D2 at the discharge port side portion of the measurement chamber 70, the traveling machine body lateral outer side portion 10Fb in a plan view is shown. The shape may be changed to a shape parallel to the traveling machine body direction, and the shape of the traveling machine body lateral outer side portion 10Fb in a plan view may be an inclined shape that is looser than the inclined shape of the traveling machine body lateral inner side portion 10Fa.

  Therefore, the suction port 76 is located closer to the outside of the measurement chamber 70 than the discharge port 77, and the control unit cooling air is easily sucked from the outside of the measurement chamber 70 as much as possible. Further, the filter case 79 is easily reachable from the outside of the measurement chamber 70.

  As shown in FIGS. 3 and 7, a power switch 83 for the internal quality measuring device 40 is provided in a corner portion on the inner side of the traveling machine body in the measurement chamber 70. A connector 84 is provided on the power switch 83. The connector 84 is integrally formed with the case portion of the power switch 83. The connector 84 includes a power cable (not shown) that supplies power to the internal quality measuring device 40 from a power supply (not shown) provided in the traveling machine body, and a transmission that transmits measurement information from the internal quality measuring device 40 to the display device 39. A cable (not shown) is connected. The power cable and the transmission cable reach the rear part of the grain tank 10 from the connector 84 in the rearward direction of the traveling machine body, and face the traveling machine body forward at a turning point set near the turning axis P2 that is the opening / closing axis of the grain tank 10. The wiring is routed back to the power source and the display device 39. Therefore, the grain tank 10 can be opened and closed without disconnecting the power cable and the transmission cable from the connector 84.

The sampling unit 50 will be described in detail.
The sampling part 50 is provided in the site | part near the front side wall 10F of the grain tank 10 in the grain storage space 10b of the grain tank 10. FIG. That is, in the grain storage space 10b, the grain is supplied by the jumping by the rotating blades 17 rotating counterclockwise, so that the part near the front wall 10F in the grain storage space 10b , No grain supply leakage occurs. Therefore, the sampling part 50 samples a grain in the state without a sampling omission.

  The sampling unit 50 is provided in a portion near the upper end of the grain tank 10. That is, the holding part forming body 51 is located at a high arrangement height, and is a portion located below the holding part forming body 51 in the grain storage space 10b, and the grains discharged from the receiving holding part 52 are It is possible to increase the amount of deposition in the deposited portion.

  The sampling unit 50 is supported by a measurement chamber forming body 71 fitted in the attachment hole 10c of the front side wall 10F. Therefore, the sampling unit 50 is deployed at a predetermined location in the grain storage space 10b of the grain tank 10 by attaching the measurement chamber forming body 71 to the grain tank 10 and mounting the internal quality measuring device 40 on the grain tank 10. can do. By removing the measurement chamber forming body 71 from the grain tank 10 and removing the internal quality measuring device 40 from the grain tank 10, the sampling unit 50 can be taken out of the grain tank 10.

  The receiving and holding part 52 is formed by a holding part forming body 51 and a wall plate 56 fixed inside the holding part forming body 51.

  As shown in FIG. 13, the sampling unit 50 has the second height from the detection region by the highest grain sensor 86 among the four grain sensors 86 that detect the amount of stored grain in the grain tank 10. It is located in the range which reaches the detection area by the grain sensor 86 of the position. Among the four grain sensors 86, the grain sensor 86 at the highest position and the second height position is supported by the rear wall 71R of the measurement chamber forming body 71, and the grain sensor 86 at the third height position. Is supported by the front side wall 10 </ b> F of the grain tank 10, and the grain sensor 86 at the fourth height position is supported by the rear side wall 10 </ b> R of the grain tank 10. Of the signal transmission harnesses (not shown) connected to the four grain sensors 86 and the full sensor 53, the harness part on the sensor side connected to the grain sensor 86 or the full sensor 53 is the grain sensor 86 or the full sensor 53. To the measurement chamber 70 and is wired so as to be connected to a harness part on the traveling machine body by a connector (not shown) in the measurement chamber 70 or in the vicinity of the measurement chamber 70 outside.

  As shown in FIG. 8, the opening / closing plate 54 is supported by the holding portion forming body 51 via a support shaft 54a, and is swinged up and down using the horizontal axis of the grain tank of the support shaft 54a as the opening / closing axis X. As a result, the position is switched between an ascending and closing position where the discharge port 52a of the receiving and holding part 52 is closed and a descending and opening position where the discharging port 52a of the receiving and holding part 52 is opened. The opening / closing axis X of the opening / closing plate 54 is disposed on the opposite side of the receiving holding portion 52 from the side where the detection portion 41 is located.

  As shown in FIG. 10, the opening / closing plate 54 is formed in a state in which the opening / closing plate 54 is located at the ascending / closing position, and the shape as viewed in the direction along the opening / closing axis X is bent upward. It is. The opening / closing plate 54 is further formed so that the uppermost end portion 54t of the bent portion 54b has a shape located in a portion of the opening / closing plate 54 near the opening / closing axis X. The opening / closing plate 54 is arranged so that the uppermost end portion 54t is lower than the lowermost end 41AD of the detection region 41A of the detection unit 41 in the state of being in the raised closed position.

  Therefore, the shape of the bottom surface of the grain group formed by the grains held in the receiving holder 52 is the same as the shape and position of the opening / closing plate 54, and the grain group formed by the grains held in the receiving holder 52. Can be set to a grain amount close to the minimum necessary for performing detection by the detection unit 41 as prescribed, and the number of samplings can be increased. For this purpose, the shape of the opening / closing plate 54 in the raised and closed position is changed to a shape bent upward as viewed from the direction along the opening / closing axis X, and is curved upward. You may make it the shape.

  A guide body 88 is provided at a location located on the opposite side of the receiving holding portion 52 from the side where the detecting portion 41 is located, in the upper portion of the receiving holding portion 52. The guide body 88 is configured by an inclined plate body integrally formed on the upper portion of the wall plate 56. The guide body 88 includes an inclined guide surface 88a and guides the grain that has come above the sampling unit 50 to flow down toward the holding unit 52 by the inclined guide surface 88a.

  The switching mechanism 60 includes an electric motor 61 and an opening / closing operation unit 62 that are arranged in a portion of the inside of the holding portion forming body 51 that is positioned below the receiving holding portion 52.

  The electric motor 61 is disposed below the guide body 88. More specifically, the electric motor 61 is accommodated in a motor chamber 63 provided below the guide body 88. The motor chamber 63 is located on the lateral side of the drop passage 55. The motor chamber 63 is formed by a holding portion forming body 51 and a wall member 64 fixed inside the holding portion forming body 51. The electric motor 61 is a part located on the opposite side of the receiving holding part 52 from the side where the detecting part 41 is located, and the side where the receiving holding part 52 is located with respect to the opening / closing axis X of the opening / closing plate 54. It is deployed on the opposite side. The electric motor 61 is supported by the wall member 64.

  The opening / closing operation part 62 is arranged on the side where the receiving and holding part 52 is located with respect to the wall member 64. The opening / closing operation unit 62 is configured by a rotating cam connected to a portion of the output shaft 61 a of the electric motor 61 that protrudes from the wall member 64 to the side where the drop passage 55 is located. Therefore, the opening / closing operation unit 62 is driven by the electric motor 61 to open / close the opening / closing plate 54.

  FIG. 10 is a side view showing the sampling unit 50 with the discharge port 52a closed. FIG. 12B is a front view showing the switching mechanism 60 in a state in which the opening / closing plate 54 is operated to the ascending / closing position. As shown in FIGS. 10 and 12B, the opening / closing operation unit 62 is driven to rotate around the rotation axis Y toward the closing operation side, and is closed when the large-diameter portion 62a is positioned above the rotation axis Y. It becomes an operation state. When the opening / closing operation unit 62 is in the closing operation state, the large-diameter portion 62a abuts against a portion near the opening / closing axis X on the back surface side of the opening / closing plate 54 to push up the opening / closing plate 54, thereby raising and closing the opening / closing plate 54 To operate.

  FIG. 11 is a side view showing the sampling unit 50 with the discharge port 52a opened. FIG. 12A is a front view showing the switching mechanism 60 in a state where the opening / closing plate 54 is operated to the lowered open position. As shown in FIGS. 11 and 12A, the opening / closing operation part 62 is driven to rotate around the rotation axis Y toward the opening operation side, and opens when the large-diameter part 62a is positioned below the rotation axis Y. It becomes an operation state. When the opening / closing operation unit 62 is in the opening operation state, the opening / closing plate 54 is operated to the lowered opening position by weight by releasing the push-up action of the large-diameter portion 62a with respect to the opening / closing plate 54.

  As shown in FIG. 11, the opening / closing operation part 62 enters the recessed part 54 c formed by the bent part 54 b on the back side of the opening / closing plate 54 when the opening / closing plate 54 is operated to the lowered open position. As a result, the opening / closing plate 54 in the lowered open position is positioned near the electric motor 61 to widen the drop passage 55.

  A rotary potentiometer 65 is accommodated in the motor chamber 63 while being supported by the wall member 64. As shown in FIGS. 10 and 12, the detection arm 66 extends from the portion of the rotation operation shaft 65 a of the rotary potentiometer 65 that protrudes from the wall member 64 to the side where the drop passage 55 is located so as to be integrally rotatable. The detection arm 66 includes a detection unit 66 a that contacts the peripheral surface of the opening / closing operation unit 62. When the opening / closing plate 54 is switched to the ascending / closing position, the rotary potentiometer 65 switches the opening / closing plate 54 to the ascending / closing position by the swinging operation of the detection arm 66 to the closing detection position by the opening / closing operation unit 62. Is detected. When the opening / closing plate 54 is switched to the lowering / opening position, the rotary potentiometer 65 is switched to the lowering / opening position of the opening / closing plate 54 by the swinging operation of the detection arm 66 to the detection position by the opening / closing operation unit 62. Is detected.

  The full sensor 53 is constituted by a capacitive proximity sensor. As shown in FIG. 4, the full sensor 53 is arranged in a part of the holding part forming body 51 that is located in a direction intersecting the measurement light projection direction of the detection part 41 in plan view. That is, the detection light 53A of the full sensor 53 is received and positioned close to the receiving port 52b of the holding part 52 while avoiding that the measurement light from the detection part 41 strikes the full sensor 53. That is, the fullness level of the receiving and holding unit 52 set by the full sensor 53 is lowered to increase the number of samplings.

  The full sensor 53 is attached to the surface of the holding portion forming body 51 toward the receiving holding portion 52 in a state inclined with respect to the vertical direction of the receiving holding portion 52. That is, even if the grain is placed on the part where the full sensor 53 protrudes from the surface of the holding part forming body 51, the grain is configured to fall by the inclination of the full sensor 53.

[Another embodiment]
FIG. 14 is a longitudinal side view showing the internal quality measuring device 40 and the sampling unit 50 having another implementation structure.

  In the internal quality measuring device 40 having another implementation structure, the detection unit 41, the light source unit 43, the measurement control unit 45, the detection unit 41, the light source unit 43, and the measurement control unit 45 are accommodated, and a grain tank. The internal quality measuring device 40 is configured to include a housing 74 detachably fitted in a mounting hole 10c provided in the front wall 10F. The sampling part 50 arranged in the grain storage space 10b of the grain tank 10 is supported by the rear wall 74R of the housing 74 fitted in the mounting hole 10c.

  That is, the measurement chamber 70 in a state partitioned from the grain storage space 10b of the grain tank 10 is formed by the housing 74 inside the front side wall 10F of the grain tank 10, and the detection unit 41 and the light source are formed in the measurement chamber 70. The unit 43 and the measurement control unit 45 are provided.

  Therefore, the detection unit 41, the light source unit 43, and the measurement control unit 45 can be detached from the grain tank 10 by an operation of detaching the housing 74 from the grain tank 10. By the operation of fitting the housing 74 in the mounting hole 10c, the sampling unit 50 can be arranged at a predetermined location in the grain storage space 10b of the grain tank 10, and by the operation of removing the housing 74 from the mounting hole 10c, the sampling unit 50 can be taken out from the grain storage space 10b.

  A suction port 76 for the control unit cooling air is provided in a portion of the front plate 74F of the housing 74 that is closer to the lateral side of the traveling machine body, and a portion of the front plate 74F of the housing 74 that is closer to the lateral side of the traveling machine body. A discharge port 77 and a guide tube 78 for the control unit cooling air are provided.

FIG. 15 is a longitudinal side view showing a sampling unit 50 having still another implementation structure.
Further, the sampling unit 50 having another implementation structure includes a boot 89 extending downward from the holding unit forming body 51. The boot 89 is configured so as to be formed below the receiving and holding portion 52 for receiving a space in which the measured grain discharged from the receiving and holding portion 52 is accumulated.

  Even if the grain is stored in the grain storage space 10b in a state where the upper surface of the grain stored in the grain storage space 10b of the grain tank 10 is located higher than the lower end of the boot 89, this grain Does not enter the boot 89. Therefore, even if the storage amount of the grain in the grain storage space 10b increases, a large-capacity space for storing the measured grain discharged from the receiving and holding unit 52 can be secured by the boot 89, and the sampling unit 50 can be sampled many times, and the internal quality measurement can be performed with high measurement accuracy.

FIG. 16 is a schematic diagram showing a sampling unit 50 having still another implementation structure.
As shown in FIG. 16, in the sampling unit 50 having a further implementation structure, the upper and lower positions of the full sensor 53 are set such that the lowermost end 53AD of the detection region 53A of the full sensor 53 is the uppermost end of the detection region 41A of the detection unit 41. The sampling unit 50 can be configured in a compact state in which the full height sensor 53 is set close to the detection unit 41 by setting the full position of the full sensor 53 to a vertical position positioned below 41 AU.

  That is, the detection part 41 is located in the site | part near the front side wall of the grain tank 10, and the full sensor 53 cross | intersects with respect to the measurement light projection direction of the detection part 41 by planar view among the holding | maintenance part formation bodies 51. By being provided in the part located in the direction, the full sensor 53 is located closer to the cerealing device 12 than the detection unit 41. Therefore, when the full sensor 53 detects the grain full state of the receiving and holding part 52, the full level AL of the receiving and holding part 52 is inclined as shown in FIG. 16 due to the angle of repose of the grain. As a result, even if the arrangement height of the full sensor 53 is set close to the opening / closing plate 54 and the grain amount in the full state of the receiving holder 52 is set to a small amount, the full level AL of the receiving holder 52 is set. Reaches the uppermost end 41AU of the detection area 41A of the detection unit 41, and the measurement by the detection unit 41 is performed without hindrance. Therefore, the arrangement height of the full sensor 53 can be set to an arrangement height close to the opening / closing plate 54.

  As shown by a two-dot chain line in FIG. 16, as the detection unit 41 is separated from the full sensor 53, the full level AL becomes lower at the position where the full sensor 53 is located, and the arrangement height of the full sensor 53 is reduced. The height can be set closer to the opening / closing plate 54.

[Another Example]
(1) Although the example which provided the measurement chamber 70 inside the front side wall 10F of the grain tank 10 was shown in the above-mentioned Example, the outer side than the front side wall 10F of the grain tank 10 or the grain tank 10 was shown. It may be carried out by providing it at the front end of the lateral side wall.

(2) In the above-described embodiment, the example in which the sampling unit 50 is supported by the measurement chamber forming body 71 and the housing 74 has been described. However, a dedicated support structure for supporting the sampling unit 50 on the front side wall 10F of the grain tank 10 or the like. It may be carried out by supporting the grain tank 10.

(3) Although the example which employ | adopted the detection part 41 which makes measurement light act as a detection medium on a grain was shown in the above-mentioned Example, the detection part which acts various detection media, such as an ultrasonic wave, on a grain is employ | adopted. May be implemented.

(4) In the above-described embodiment, the example in which the full sensor 53 is configured by the proximity sensor is shown. However, instead of the proximity sensor, it is configured by various types of sensors such as an optical presence sensor or a contact type presence sensor. May be implemented.

(5) Although the example which employ | adopted the driving | running | working part 4 which is not provided with an operation cabin was shown in the above-mentioned Example, you may implement by employ | adopting the driving | running | working part provided with the operation cabin.

  INDUSTRIAL APPLICABILITY The present invention can be used not only for a combine equipped with a self-threatening type threshing apparatus, but also for a normal type combine equipped with a threshing apparatus configured to throw the harvested cereal culm from the stock source to the tip of the harvested cereal.

6 Threshing device 10 Grain tank 10F Front wall 10Fa Traveling machine body inner part 10Rb Traveling machine body outer part 31 Engine 35 Cooling fan 36 Blower guide 40 Internal quality measurement measure 41 Detection part 45 Measurement control part 70 Measurement room 74 Housing 74R Rear wall 74U Upper surface 76 Suction port 77 Discharge port 78 Guide tube 78a Discharge port D1 Depth of entry (suction port side part of measurement chamber)
D2 Depth of penetration (measurement room outlet side part)

Claims (10)

Engine,
A cooling fan that is arranged on the lateral outer side of the traveling body of the engine and supplies engine cooling air to the traveling body laterally inward;
A threshing device for threshing the harvested cereal meal;
A grain tank that is deployed behind the engine and collects and stores the grain from the threshing device;
An internal quality measuring device for measuring the internal quality of the grain supplied from the threshing device to the kernel tank,
In the internal quality measuring device, a detection unit that causes a detection medium to act on the grain supplied to the grain tank, a measurement control unit that measures internal quality of the grain based on detection information by the detection unit, and A housing that houses the detection unit and the measurement control unit,
The housing includes a suction port capable of introducing a control unit cooling air for cooling the measurement control unit, and a discharge port capable of discharging the control unit cooling air,
In the front part of the grain tank, with a measurement chamber in a state opened to the front of the traveling machine body, the internal quality measuring device is deployed in the measurement chamber,
A combine provided with the suction port in a portion of the housing near the lateral side of the traveling machine body.   The combine according to claim 1, further comprising a filter at the suction port.   The combine according to claim 2, wherein the filter is detachable. The measurement chamber is deployed on the front side wall of the grain tank in a state of entering the inside of the grain tank,
Of the measurement chamber, the suction port side portion where the suction port is located has a depth that enters the inside of the grain tank, and the discharge port side portion of the measurement chamber where the discharge port is located is the grain tank. The combine according to any one of claims 1 to 3, wherein the combine is set to be shallower than a depth of entering the inside. In a plan view, the shape of the traveling vehicle body inner side portion of the front side wall is formed in an inclined shape located on the rear side of the traveling vehicle body toward the traveling vehicle body inner side, and The shape is formed in a shape parallel to the lateral direction of the traveling machine body, or an inclined shape that is looser than the inclined shape of the lateral part of the traveling machine body,
The measurement chamber is provided in a state extending across the traveling machine body inner side part and the traveling machine body outer side part so that at least the suction port is located in the traveling machine body outer side part,
The combine of Claim 4 which formed the rear wall of the said measurement chamber in the shape parallel to the inclination shape of the said traveling body horizontal inner part.   The combine as described in any one of Claims 1-5 provided with the guide tube which guides the said control part cooling air from the said discharge port to the exterior of the said measurement chamber.   The combine according to claim 6, wherein a discharge port of the guide tube is opened downwardly of the traveling machine body.   The combine according to any one of claims 1 to 7, wherein the discharge port is disposed in a portion of the upper surface of the housing near the lateral inner end of the traveling machine body.   The combine as described in any one of Claims 1-8 provided with the ventilation guide which guides the said engine cooling air to traveling body body inward.   The combine according to any one of claims 1 to 9, wherein the detection unit is an optical sensor that irradiates a grain with measurement light as a detection medium and measures the internal quality.

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