JP2022098808A - Grain measuring device in combine-harvester - Google Patents

Abstract

To provide a grain measuring device in combine-harvesters when introducing grain in a measuring chamber of a moisture meter by a feed roller and measuring a moisture content of the grain introduced in the measuring chamber, capable of appropriately performing the measurement by preventing excessive grain feed.SOLUTION: A measuring device introducing, with rotation drive thereof, grain falling on a spiral of a feed roller 77 of a moisture meter 72, through a feed port 72c into a measuring chamber and acquiring a moisture content of the grain introduced in the measuring chamber by the moisture meter, includes regulation means 83 for preventing the grain falling on the spiral of the feed roller and stored in a groove thereof, from colliding with subsequently-falling grain and unexpectedly entering the measuring chamber.SELECTED DRAWING: Figure 11

Description

The present invention relates to a device for measuring grains in a combine, and more particularly to an device for measuring the water content of harvested grains by providing a moisture meter in the combine.

Generally, in a general-purpose combine, a control unit, a threshing device, a grain tank, etc. are provided on the machine equipped with a traveling device, and a header (cutting part) consisting of a scraping reel, a cutting blade device, an auger, and a feeder is provided in front of the machine. Is provided. Then, when harvesting grains such as paddy rice, wheat, soybeans, and buckwheat by cutting the planted grain in the field, the combine harvests the planted grain with a header and transports it to the threshing device, and the threshing device is used for this. The grains are threshed from the transported harvested harvester by a handling cylinder, and the grains sorted by a rocking sorter or the like are further transferred to a grain tank using a grain raising device.

Then, when the grains harvested by the combine or the like are shipped as a commercial product, the grain is inspected for quality and the like, and the transaction price is determined by the grading and the like. Therefore, with the ultimate purpose of harvesting high-quality grains and earning high income, an imaging device such as a moisture meter or a camera is installed in the combine, and the grains are harvested based on the water content and the presence or absence of dirty grains. Judgment of the appropriate time, change of cutting method such as cutting height, selection of drying method and dryer as post-treatment of harvested grains, or judgment of necessity of cleaning and color selection. Is being considered.

In the self-threshing combine, in order to prevent damage to the harvested grains, the water content of the grains is measured to control each part of the combine, and in that case, the grains that have been threshed by the threshing device are used. It is known, for example, by Patent Document 1, that a part of grains discharged into a grain tank using a threshing device is taken into a moisture meter and the water content is measured. Further, in a dryer for drying grains, the grains to be sampled are supplied to a moisture meter by a supply roller (screw) provided with a spiral, and the water content of the grains during drying is measured, for example, according to Patent Document 2. Are known.

Japanese Unexamined Patent Publication No. 11-271251 Japanese Unexamined Patent Publication No. 2012-185085

As described above, it is useful to provide a moisture meter in the combine to measure the water content of the grains during the harvesting operation in order to harvest high-quality grains and obtain high income. Therefore, as described in Pat. It is installed in the place where it is supplied while scattering in the tank, and the moisture meter takes in one by one while catching the scattered grains, sandwiches it between a pair of rotating rollers that are also used as electrodes, and crushes it between the electrodes. It is configured to measure the electrical resistance of.

Further, as a means for taking the above-mentioned scattered grains into the moisture meter one by one, for example, as described in Patent Document 2, a pair of supply screws are provided in the moisture meter, and the grains scattered on the supply screw. Make the grain catch. Further, it is conceivable to accommodate the received grains in the transport groove of the supply screw and supply the grains one by one between the pair of electrode rolls as the supply screw rotates.

However, when the water content of the grain is measured by using a moisture meter in this way, in the supply of the grain to the measurement chamber provided with the electrode roll by the supply screw, the excessive supply of the grain causes the inside of the measurement chamber. There is a concern that excess grains may be introduced and interfere with the measurement of the water content, and there is room for improvement in the supply of such grains to the measurement chamber.

More specifically, in Patent Document 2, an upper partition cover that regulates the amount of grain transported through the transport path of the supply screw is provided, and the opening (entrance portion) between the transport path and the upper partition cover is measured. The passage diameter is set to be slightly larger than the particle size of the target grain, the transport amount is regulated by the inlet portion formed to the size that one grain passes, and the grain is measured one by one in the measurement area ( Moved into the measurement room).

In this case, the grain size of the grain depends on the type, variety, cultivation environment, etc. of the grain. For example, in the case of soybean having a large grain size among grains, the classification of large grain, medium grain, small grain, and very small grain The diameter of the sieve grain in is 8.5 to 4.9 mm, which is a little less than double the difference. In addition, in a general-purpose combine that harvests paddy rice, wheat, soybeans, etc., a single moisture meter is used to measure the water content regardless of the type of grain, so the above-mentioned transport path and upper partition cover are used. It is necessary to make a large opening between the grains for the grain having the maximum particle size.

Therefore, the grains contained in the transport groove of the supply screw collide with the grains scattered later, are pushed by the momentum, pass through this large opening, and unexpectedly enter the measurement chamber or are scattered. Depending on the direction, there is a risk that the grain will directly enter the large opening. Therefore, even if the amount of grains transported to the measurement chamber is regulated by the upper partition cover, the grains are unexpectedly supplied to the measurement chamber even during the suspension of measurement in which the supply screw is not rotationally driven.

Then, a large number of grains that unexpectedly enter the measurement chamber and grains that are supplied by the rotational drive of the supply screw at the start of the measurement are supplied at one time, for example, between the electrode rolls, which hinders the measurement. Or, the overfilling of the grain in the measurement chamber makes it impossible to rotate the supply screw, or the grain causes a bridge phenomenon in the measurement chamber and the grain is not supplied to the electrode roll, making measurement impossible. Causes a problem.

Therefore, in view of the above-mentioned problems, the present invention introduces grains into the measuring chamber of the moisture meter by a supply roller, and when measuring the water content of the grains introduced into the measuring chamber, an excessive amount of grains is used. It is an object of the present invention to provide a grain measuring device in a combine capable of preventing the supply of grains and performing the measurement appropriately.

In order to solve the above-mentioned problems, the grain measuring device in the combine of the present invention first has a moisture meter supply roller facing the grain release path of the grain raising device for transferring grains from the grain removing device to the grain tank. In a measuring device, a grain that has fallen onto the spiral of this supply roller is introduced into the measuring chamber through a supply port as it is driven to rotate, and the water content of the grain introduced into the measuring chamber is determined by a moisture meter. The measuring device shall be provided with regulatory means to prevent grains that have fallen onto the spiral of the supply roller and are contained in the groove from colliding with the grains that have subsequently fallen and unexpectedly entering the measuring chamber. It is a feature.

Secondly, the present invention comprises a shielding plate provided in the grain release path of the grain raising device, and the shielding plate prevents the grains from falling onto the spiral in the vicinity of the supply port. It is a feature. Further, in the third aspect of the present invention, the outer peripheral surface of the supply roller of the moisture meter is provided so as to cross the grain discharge path of the grain raising device, and the shielding plate is dropped onto the spiral of the supply roller to form a groove thereof. It is characterized in that it is provided in the grain release path on the better side than the grains housed in.

Fourth, in the present invention, a supply roller is provided in the sampling chamber provided in the measuring device, and a shielding plate is hung inside a shielding cover that closes the upper side of the sampling chamber, and the shielding plate is detachably attached with a bolt. It is characterized in that when the shielding cover is removed together with the shielding plate, maintenance of the supply roller provided in the sampling chamber can be performed. Fifth, in the present invention, a supply roller is provided in the collection chamber provided in the measuring device, and a closing plate is provided to close the lower side of the collection chamber. When the closing plate is closed, grains are deposited in the collection chamber. It is characterized by providing a storage chamber and a camera for photographing the grains deposited in this storage chamber.

Further, in the sixth aspect of the present invention, an opening is provided below the closing plate of the sampling chamber, and the grain having been measured for the water content discharged through this opening and the grain falling by opening the closing plate are discharged. It is characterized in that it is returned to the sorting chamber of the threshing device via.

According to the grain measuring device in the combine of the present invention, the supply roller of the moisture meter is placed on the spiral of the feeding roller in the grain discharging path of the grain raising device for transferring the grains from the grain removing device to the grain tank. In a measuring device in which the dropped grains are introduced into the measuring chamber through a supply port along with the rotational drive, and the water content of the grains introduced in the measuring chamber is determined by a moisture meter, the measuring device includes a supply roller. Since the regulation means is provided to prevent the grains that have fallen on the spiral and contained in the groove from colliding with the grains that have fallen afterwards and unexpectedly enter the measuring chamber, there is an excessive amount in the measuring chamber of the moisture meter. The supply of grains can be prevented by regulatory means, and the water content of the grains can be measured properly.

Further, when the restricting means is composed of a shielding plate provided in the grain release path of the grain raising device and the shielding plate prevents the grains from falling onto the racen near the supply port, the grains collide with the subsequently dropped grains. By providing a shielding plate for the grains contained in the spiral groove of the supply roller near the supply port, which is likely to enter the measurement chamber unexpectedly, it is possible to eliminate the collision of the grains later. As a result, it is possible to effectively prevent unexpected invasion of grains into the supply port. Since the shielding plate is not involved in the fall of grains onto the spiral away from the vicinity of the supply port, the grains that have fallen onto the spiral are introduced into the measurement chamber from the supply port as the supply roller is rotationally driven. be able to.

Further, the outer peripheral surface of the supply roller of the moisture meter is provided so as to cross the grain discharge path of the grain raising device, and the shielding plate is dropped onto the spiral of the supply roller and is better than the grains contained in the groove. When provided in the grain release path on the side, grains that fall in a parabolic shape enter the supply port directly, as in the case where the outer peripheral surface of the supply roller is provided along the grain release path of the grain raising device. There is a risk that it may get loose or jump over the spiral of the supply roller, but if the outer peripheral surface of the supply roller of the moisture meter is provided so as to cross the grain discharge path of the grain raising device, such a risk is eliminated and it is unexpected. It is possible to prevent grains from entering the measurement chamber.

Further, a supply roller is provided in the sampling chamber provided in the measuring device, and a shielding plate is hung inside the shielding cover that closes the upper side of the sampling chamber and attached detachably with a bolt, and the shielding cover is removed together with the shielding plate. If the supply roller installed in the collection chamber can be maintained, it will be easy to remove the shielding cover, remove the shield plate that has been worn due to collision with the dropped grains, and replace it with a new shielding plate. ..

Further, when the shielding cover is removed and the maintenance of the supply roller provided in the sampling chamber is performed, the shielding plate is removed together with the shielding cover, so that such maintenance can be easily performed without being hindered by the shielding plate. In addition, when harvesting paddy rice by cutting rice plants, it is unlikely that the grains contained in the spiral ditch will collide with the grains that have fallen afterwards and enter the measurement chamber, so a shielding plate is not required. However, even in such a case, the shielding cover can be removed and the shielding plate can be easily removed.

Further, a supply roller is provided in the sampling chamber provided in the measuring device, and a closing plate is provided to close the lower side of the sampling chamber. When the closing plate is closed, the sampling chamber becomes a storage chamber for depositing grains, and also. If a camera for photographing the grains deposited in this storage chamber is provided, the points where the grains to be sampled to the moisture meter are supplied and the points where the grains to be photographed by the camera are deposited can be collected in the collection chamber. , It is possible to provide a grain measuring device at low cost.

Then, an opening is provided below the closing plate of the sampling chamber, and the grains whose water content has been measured to be discharged through this opening and the grains that fall by opening the closing plate are sorted by the threshing device via the discharge tube. When the grains are returned to the chamber, the grains used for the measurement can be returned to the sorting chamber of the threshing device, and finally stored in the grain tank by the grain raising device, so that the loss of the grains to be harvested can be reduced. If the moisture meter crushes the grains to determine the water content, the crushed grains can be returned to the sorting chamber and discharged to the outside of the machine together with the culm, for example, returned to the Glen tank. It does not stay in the Glen tank for a long time and pollute the inside as in the case.

It is a side view of the general-purpose combine to which this invention is applied. It is a plan view of a general-purpose combine. It is a side view which shows the internal structure of a threshing apparatus. It is a perspective view seen from the front diagonally left side which shows the mounting state of a measuring device to a combine. It is a perspective view seen from the front diagonal right side which shows the mounting state of a measuring device to a combine. It is a side view which shows the mounting state to the combine of a measuring device. It is a top view which shows the mounting state to the combine of a measuring device. It is a cross-sectional view which shows the mounting state to the combine of a measuring device. It is a top view of the grain measuring device. It is a rear view which shows the internal structure of the grain measuring apparatus. It is a side view which shows the internal structure of the grain measuring apparatus.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the general-purpose combine that harvests rice, wheat or soybean, buckwheat, rapeseed, etc. and harvests the grains (grains) is the left and right crawler type traveling device 1 and the truck of the traveling device 1. The airframe is composed of a square frame-shaped airframe frame 3 provided above the frame 2, and the left and right traveling devices 1 are vertically attached to the airframe frame 3 by a hydraulic cylinder for attitude control (not shown). Further, a threshing device 4 for threshing and sorting crops is provided on the left side of the machine frame 3 in the forward direction, and a control unit 5 having a driver's seat and a grain tank 6 for storing grains are provided on the right side.

Further, a header (cutting unit) 7 for cutting crops and transporting them to the threshing device 4 is provided in front of the threshing device 4 and the control unit 5. From below the control unit 5 to the front of the Glen tank 6, a driving unit 9 composed of an engine 8, a radiator, an air cleaner, etc. is provided, of which the engine 8 is a crawler type traveling device 1, a threshing device 4, and a Glen tank 6. , Is a power source for driving the header 7 and the like. Further, behind the threshing device 4, a chopper presser 10 for cutting culms and the like and diffusing into the field is provided, and further behind the grain tank 6, a vertical grain discharging auger 11 for discharging grains to the outside of the machine is provided. A spiral 12 and a discharge spiral 13 are provided.

Here, to explain the structure of each part, the header 7 provided on the front side of the machine body is configured by integrally connecting the feeder house 14, the auger frame 15, and the reel frame 16. Among these, the auger frame 15 is provided with a platform 17 formed by bending a steel plate, and on the platform 17, a drum 18b having a spiral 18a and a finger 18c protruding from the outer periphery of the drum 18b are provided in the left-right direction. The extending platform auger 18 is pivotally mounted so that it can be rotationally driven. Further, on the front portion of the auger frame 15, left and right dividers 19 and a reciprocating blade cutting device 20 are provided.

Further, in the feeder house 14 formed in the shape of a box frame, the left and right transport chains 24 are wound between the rear drive sprocket 22 attached to the drive shaft 21 and the front drum 23, and the left and right transport chains 24 are wound. A feeder 26 in which a plurality of slats 25 are laid horizontally is provided with a predetermined interval between them. Further, the reel frame 16 is provided with a scraping reel 27, and the scraping reel 27 has a drive shaft rotatably supported on the left and right tip portions of the reel frame 16 and a side view that rotates integrally with the drive shaft. It includes left and right rotary supports 28 having a polygonal shape (hexagonal shape in the embodiment).

Further, a plurality of tine mounting rods 29 extending in the left-right direction are rotatably erected at the apex of the left and right rotary supports 28, and spring-type tines 30 are suspended from each tine mounting rod 29 at predetermined intervals. Install in a shape. On one lateral outer side of the rotary support 28, a posture-maintaining rotating body 31 that rotates around the shaft core deviated from the shaft core of the drive shaft is provided, and is provided at each apex of the posture-maintaining rotating body 31. By connecting the pivot body 32 and one side end of the tine mounting rod 29 via a link, the tine 30 keeps its posture so as to always face downward regardless of the rotation of the rotation support 28.

The reel frame 16 is for moving back and forth with the rear part rotatably pivotally supported at the tip of the left and right swing arms 33 rotatably supported on the upper part of the auger frame 15 and one end attached to the feeder house 14. By expanding and contracting the electro-hydraulic cylinder 34 of the above, the suction reel 27 can be positioned back and forth with respect to the auger frame 15 via the swing arm 33. Further, a hydraulic cylinder 35 for raising and lowering is provided between the middle of the reel frame 16 and the auger frame 15, and by expanding and contracting the hydraulic cylinder 35, the suction reel 27 is moved up and down with respect to the auger frame 15. The height can be adjusted.

The header 7 configured as described above is rotatably supported on the front frame of the threshing device 4 erected on the front portion of the machine frame 3 via a holder, and also includes the feeder house 14 and the machine frame 3. By expanding and contracting the lifting hydraulic cylinder 36 provided between the two, the posture can be changed between the lowered state and the raised state on the front side of the header 7. The drive shaft 21 of the feeder 26 is provided on the same center as the rotation center of the header portion 7, and the scraping reel 27 of the header portion 7, the cutting blade device 20, the platform auger 18, and the feeder 26 are provided. It is driven by engine power.

Therefore, when the aircraft is run with the header 7 lowered, the planted culms (crops) in the field are divided into cutting targets and non-cutting targets by the left and right dividers 19, and among them, the planting target is planted. The standing grain culm is cut by the cutting blade device 20 while being scraped into the platform 17 by the scraping reel 27. Further, the grain culm scraped into the platform 17 is laterally fed to the front of the feeder house 14 by the platform auger 18, and the grain culm laterally fed to the front of the feeder house 14 is laterally fed by the feeder 26 to the feeder house 14. It is scraped up and passed through the lower part of the feeder house 14 while being locked to the slats 25 attached to the transport chain 24, and the entire cut grain culm is put into the threshing device 4.

In the header 7, the headlight 37 is attached to the front end of the reel frame 16, and the direction indicator 38 and the rearview mirror 39 are attached to the stay 40 erected from the auger frame 15. Further, 41 is a cover that covers the side of the platform 17, and 42 is a cover that covers the transmission portion of the scraping reel 27. Further, a maintenance ladder 43 is erected from the machine frame 3 on the rear side of the feeder house 14.

Next, the threshing device 4 will be described. The threshing device 4 has a rotor cover 44 that can be opened and closed upward via a hinge, a rotor side cover 45 that can be opened and closed laterally, and a removable threshing cover (front cover 46, The rear cover 47) covers the upper side and the left side, and the choppas spreader 10 is continuously installed behind the rear cover 47). Further, the threshing device 4 includes a handling chamber 48 into which the grain culms conveyed by the feeder 26 are put, and a sorting chamber 49 formed below the handling chamber 48. Among these, a handling cylinder 50 that rotates around the axis in the front-rear direction of the machine is mounted in the handling chamber 48.

The handling cylinder 50 was attached to a rotor 51 having a conical front portion and a cylindrical rear portion, a spiral screw 52 attached to the outer periphery of the rotor 51, and a predetermined pitch on the outer periphery of the screw 52. A plurality of cemented carbide teeth 53 and a dust feeder 54 attached to the outer periphery of the terminal portion of the rotor 51 are provided. Further, below the handling cylinder 50, an arc-shaped receiving net 55 is provided around the lower portion of the handling cylinder 50 so as to cover the lower portion of the handling cylinder 50, following the inlet receiving plate that receives the grain culm conveyed by the feeder 26. Then, the grain culm thrown into the handling chamber 48 is conveyed while being kneaded to the rear side of the machine body by the dust feeding valve pivotally attached to the screw 52 and the rotor cover 44, and the rotor is conveyed by the screw 52 and the carbide handling tooth 53. While orbiting on the outer circumference of 51, it is rubbed against a receiving net to perform a threshing process.

On the other hand, a swing sorting body 56 is provided in the sorting chamber 49 formed below the handling chamber 48, and the swing sorting body 56 can swing back and forth by a swing mechanism having a link and a drive link before and after the swing sorting body 56. The rocking sorter 56 swings back and forth to sort the processed material. Further, below the rocking sorting body 56, a wall insert fan 57 and a turbo fan 58 for generating a sorting wind toward the rocking sorting body 56 are provided, and the material to be processed is processed by the sorting wind generated by these fans 57, 58. Wind selection is performed in the swing sorting body 56. Then, the grain leaking from the Glensieve 59 made of a net is guided down to the first flow plate and dropped onto the first spiral 60 as the first thing. Further, the second object is guided down by the second flow plate and dropped onto the second spiral 61.

Further, the dust such as the cut culm transferred to the end of the rocking sorter 56 is transferred to the chopper presser 10 from the rear discharge port together with the culm etc. transported to the rear end portion of the receiving net of the handling chamber 48, and is passed to the chopper presser. No. 10 shreds these with a knife and diffuses them into the field. Further, the grains laterally fed by the first spiral 60 are transferred into the Glen tank 6 by the bucket conveyor 62 and the lateral spiral 63 provided above the bucket conveyor 62, and the second product laterally fed by the second spiral 61 is the second. The slat conveyor 64 and the reduction horizontal spiral 65 constituting the reduction device are used to reduce the weight to the front part of the handling chamber 48 and perform the degranulation treatment again, or the lid provided in the middle of the reduction horizontal spiral cylinder is opened to remove the second product. The rocking sort body 56 is dropped again and the re-sorting process is performed.

Next, the grain tank 6 that takes in the grains that have been threshed by the above-mentioned threshing device 4 from the supply port provided at the upper part and drives the horizontal spiral that is horizontally placed at the lower part to discharge the grains to the outside of the machine when the grain is full is the prime mover. 9 Provided on the rear fuselage frame 3. The gutter tank 6 has a storage portion 6a on the upper side, which is formed in a substantially rectangular shape by the front wall, the rear wall, the right side wall, the left side wall, and the ceiling wall by connecting the flat plates formed by the steel plate, and the storage portion 6a. It is configured as a box-shaped tank with a gutter on the lower side, which is formed in a substantially inverted triangular columnar shape (fundle shape) with the front wall, the rear wall, and the left and right inclined side walls below.

Further, as shown in FIG. 7, the grain tank 6 is provided with an opening for inserting the above-mentioned horizontal spiral 63 near the upper part of the left wall of the storage portion 6a to form a grain supply port 6b, and the horizontal spiral 63 is formed. When the wheel is rotationally driven, the scraping plate provided at the end thereof discharges the grains that have been threshed by the threshing device 4 from above the front part of the tank 6 toward the rear. Further, when a horizontal spiral in the front-rear direction is laterally installed at the bottom of the trough of the tank 6 by a predetermined amount from the center in the left-right direction of the Glen tank 6 to the outside, and the horizontal spiral is rotationally driven by the power of the engine 8. The grains stored in the tank 6 can be discharged to the outside of the machine from the discharge port 13a provided at the tip of the discharge spiral 13 via the vertical spiral 12 and the discharge spiral 13.

The schematic structure of each part of the general-purpose combine has been described above. Next, the grain measuring device characterized by the present invention will be described. As shown in FIGS. 4 to 8, the grain from the threshing device 4 to the grain tank 6 is described. In the bucket conveyor 62 constituting the grain-raising device for transferring the grain, a box-shaped case 62c containing a large number of buckets 62b attached to the transport chain 62a is erected on the right side of the threshing device 4, in particular, as shown in FIG. A case 63a in which the horizontal spiral 63 is installed is attached to the front surface of the case 62c near the upper part. The grain measuring device 66 is provided with the measuring case 67 attached to the front surface of the horizontal spiral case 63a.

Further, the measurement case 67 is provided with a substantially rectangular parallelepiped collection chamber 68 inside the case, as shown in FIG. 8, and the lower portion of the collection chamber 68 serves as a grain storage chamber 69. Further, an equipment room 70 is provided on the right side of the collection room 68, and a camera 71 is provided in the equipment room 70. Further, a moisture meter 72 is attached and provided on the left side of the sampling chamber 68. A geared motor 73 is attached to the front surface of the measurement case 67.

The grain measuring device 66 configured in this way is provided by utilizing the empty space above the threshing device 4 on the left side near the upper part of the grain tank 6 as shown in FIGS. 4 and 5. It can be retrofitted to a general purpose combine as needed. In front of the measuring device 66, an organ rest 75 for holding the discharge spiral 13 in the retracted position is provided via the stay 74.

Further, as shown in FIG. 6 in detail of the measuring device 66, the bucket conveyor 62 described above scoops the grains laterally fed by the first spiral 60 of the grain removing device 4 by the bucket 62b and of the driven sprocket on the upper part. When rotating around the axis, the grains are released forward. Therefore, the released grains fall on the bottom plate 63b of the horizontal spiral case 63a provided in front from the opening provided on the front side of the case 62c of the bucket conveyor 62 in a parabolic manner and are collected in the gutter portion 63c formed in the center thereof. Then, it is laterally fed by the transverse spiral 63 and discharged into the Glen tank 6.

On the other hand, as shown in FIG. 11, an opening 63e is provided in the upper part of the front plate 63d of the horizontal spiral case 63a, and an opening 67b is provided in the top plate 67a forming the collection chamber 68 of the measurement case 67. Therefore, a part of the grains released from the bucket 62b is dropped into the collection chamber 68 through these openings 63e and 67b. The upper side of the case 62c and the horizontal spiral case 63a of the bucket conveyor 62 is closed by the top plate 62d, and the upper side of the sampling chamber 68 is closed by the shielding cover 76 detachably attached to the measuring case 67.

Further, a rectangular hole 67d is provided near the upper portion of the left side plate 67c forming the collection chamber 68, and the main body of the moisture meter 72 is passed through the supply rollers 77 and 77 provided in the hole 67d so as to project from the main body of the moisture meter 72. It is attached in close contact with the outer surface of the left side plate 67c. Therefore, the supply rollers 77, 77 provided so as to project from the main body of the moisture meter 72 have a longitudinal direction (the axial direction of the roller shaft 77a) facing the left-right direction, and are surrounded by the left side plate 67c and the right side plate 67e. It will be installed horizontally in 68.

Further, when the arrangement form of the supply rollers 77, 77 is viewed from the discharge path R of the grains discharged from the bucket conveyor 62 and falling in a parabola from the rear to the front, the outer peripheral surface of the supply rollers 77, 77 is the grains. It is provided so as to cross the grain release path R, and as a result, when the grain hits the outer peripheral surface on the rear side of the supply roller 77, it is prevented from falling further to the front side, and is directly under the supply roller 77 or. It is provided so that the grains are flipped toward the rear and the grains fall downward as they are.

The collection chamber 68 below the supply rollers 77, 77 is provided with a closing plate 78 that closes the lower side of the collection chamber 68, and the upper part closed by the closing plate 78 is the grain storage chamber 69. Will be. More specifically, as shown in FIGS. 8 and 11, a connecting portion 78a provided at the right end of the closing plate 78 is attached to the output shaft of the geared motor 73 attached to the front plate 67f of the measuring case 67, and the closing plate is attached. 78 is provided so as to be located in the sampling chamber 68 from the opening of the right side plate 67e.

Further, when the stopper pins 79 and 80 are attached to the front plate 67f so as to face the inside of the sampling chamber 68 and the geared motor 73 is driven in a forward rotation until the closing plate 78 hits the stopper pin 79 on the upper side, the lower part of the sampling chamber 68 is moved. When the geared motor 73 is driven in the reverse rotation until it is closed by the closing plate 78 and conversely the closing plate 78 hits the stopper pin 80 on the lower side, the lower part of the sampling chamber 68 is released. Therefore, when the lower part of the collection chamber 68 is blocked by the closing plate 78, the grains discharged from the bucket conveyor 62 and falling in the collection chamber 68 are collected in the storage chamber 69 and deposited on the closing plate 78. When the lower part of the collection chamber 68 is released, the grains collected in the storage chamber 69 fall downward, and the grains released from the bucket conveyor 62 and fall in the collection chamber 68 also fall downward as they are. do.

Then, the grains falling from the collection chamber 68 (storage chamber 69) and the grains discharged from the moisture meter 72 through the opening a provided near the lower end of the left side plate 67c after finishing the measurement are sent to the opening b of the threshing device 4. It is returned to the sorting chamber 49 through the reduction horizontal spiral 65 and the right side of the receiving net of the handling chamber 48 via the insertion discharge cylinder c, and sorting is performed again.

Therefore, all the grains used for the measurement can be returned to the sorting chamber 49 of the threshing device 4 for re-sorting, and finally stored in the grain tank 6 by the bucket conveyor 62, so that the loss of the grains to be harvested can be reduced. Can be reduced. If the moisture meter 72 crushes the grains to determine the water content, the crushed grains can be returned to the sorting chamber 49 and discharged to the outside of the machine together with a culm or the like. For example, a grain tank. It does not stay in the grain tank 6 for a long time and pollute the inside as in the case of returning the crushed particles to 6.

On the other hand, as described above, an equipment room 70 is provided on the right side of the collection room 68 (storage room 69), and a camera 71 is provided in the device room 70. Further, the hole provided in the right side plate 67e that separates the collection chamber 68 and the equipment chamber 70 is closed by the glass plate 81. Therefore, the grains accumulated and accumulated in the storage chamber 69 can be photographed through the glass plate 81 by the camera 71. As shown in FIG. 11, a proximity sensor 82 is provided on the rear plate 67 g, and when it is detected that grains have accumulated at a full level in the storage chamber 69, the above-mentioned closing plate 78 is opened and accumulated in the storage chamber 69. The geared motor 73 is controlled so that the grain is dropped downward.

If the inside of the storage chamber 69 is dark when photographing the accumulated grains with the camera 71, an LED light or the like for photographing is provided on the right side plate 67e to illuminate the accumulated grains in the storage chamber 69 and take a picture. May be good. At that time, if the emission color and brightness can be selected and adjusted according to the grain, a clear color or monochrome image can be delivered to a monitor or the like.

The structure of the grain measuring device 66 has been described above. Next, the supply of the grain as a sample to the main body of the moisture meter 72 will be described in detail. As shown in FIGS. 9 and 11, the left plate 67c The front plate 72a of the moisture meter 72, which is attached in close contact with the outer side surface, has two holes 72b, 72b and both holes 72b, which are separated in the front-rear direction and pass through the rotating shaft portions 77a, 77a of the two supply rollers 77, 77, respectively. , 72c is provided with one hole 72c provided on the upper side in the middle of 72b.

Then, the rotating shaft portions 77a and 77a of the supply rollers 77 and 77 are passed through the two holes 72b and 72b, respectively, and rotatably supported on the main body of the moisture meter 72. Further, the two supply rollers 77 and 77 are configured to rotate in opposite directions by a gear mechanism when an electric motor (not shown) provided in the moisture meter 72 is driven. Further, the remaining one hole 72c serves as a supply port 72c for introducing grains into the measurement chamber of the moisture meter 72 as the supply rollers 77 and 77 are rotationally driven, where the measurement chamber of the moisture meter 72 is the front plate 72a. It is formed on the back side, and the front plate 72a is also used as a member for forming a measuring chamber.

Further, the supply rollers 77 and 77 are provided with a spiral that sends the grains toward the supply port 72c or conversely sends the grains away from the supply port 72c in accordance with the forward / reverse rotation thereof. Further, the supply rollers 77 and 77 facing each other are provided by partially wrapping the outer periphery thereof so that the other spiral ridge 77c enters the one spiral groove 77b. Therefore, even if the grain g that has fallen onto the supply rollers 77, 77 and is housed in one of the spiral grooves 77b is guided by the spiral groove 77b and tries to slide down from the supply roller 77, the grain is the other spiral. It hits the mountain 77c and its sliding is prevented.

Therefore, the grain g from which the above-mentioned sliding is prevented is accommodated in the spiral grooves 77b of both supply rollers 77 and 77 in a staggered manner, and on the other hand, even if it enters the spiral groove 77b, it slides down by the other spiral mountain 77c. The grains that were not blocked, or the grains that fell and bounced on the spiral mountain 77c, are removed from the supply rollers 77, 77 and fall downward. The grains and the like that have fallen on the grains g that are aligned and housed in the spiral groove 77b try to stay in place, but are shaken off or dropped later as the supply rollers 77 and 77 rotate. It will be dropped by the momentum that collides with the grain that has been made, for example, when the supply rollers 77, 77 make one rotation for measurement, 2 to 3 or 4 grains of large grain such as soybeans An appropriate amount can be supplied to the measuring chamber one by one through the supply port 72c.

When displaying the water content of grains using the moisture meter 72, the average value obtained by individually measuring a large number of grains supplied to the measuring chamber is displayed, and such a display is displayed once. It will be done every time the measurement is made. Alternatively, depending on the type of moisture meter, the value measured at one time for a large number of grains supplied to the measuring room is displayed. In that case, the measurement and display cycle may be performed periodically, such as after a predetermined time or at a predetermined cutting mileage, or may be performed irregularly based on the operator's measurement instruction. be.

Further, in that case, the moisture meter 72 first drives the supply rollers 77, 77 in the reverse rotation by a dozen or so rotations, and drops the grains on the supply rollers 77, 77 from the tip of the roller. Then, either wait for the latest grains to accumulate on the supply rollers 77, 77, or drive the supply rollers 77, 77 in the forward rotation immediately after the reverse rotation drive, and the amount of grains required on average in the measurement chamber. After that, the rotary drive of the supply rollers 77 and 77 is stopped until the next measurement.

By the way, the size of the supply port 72c for taking in the grains of the moisture meter 72 is the width through which the grains housed in the spiral grooves 77b of both supply rollers 77 and 77 provided facing each other pass, and above the housed grains. Requires a height through which the grains that ride on the can pass. The particle size of the grain to be measured depends on the type, variety, cultivation environment, etc. of the grain. For example, in the case of soybeans having a large particle size among the grains, the large, medium, small, and very small grains The diameter of the sieve in the division is 8.5 to 4.9 mm, which is a little less than double the difference. Therefore, in consideration of versatility, the diameter of the supply port 72c can be passed through the diameter of the supply port 72c without omission even if the grain has the maximum particle size so that the water content can be obtained regardless of the type of grain. Make it as big as possible.

However, when the supply port 72c is enlarged in this way, the grains that have fallen later collide with the grains already contained in the spiral grooves 77b of the supply rollers 77 and 77, and the grains contained by the momentum. Alternatively, there is a risk that grains or the like that have fallen later may unexpectedly enter the supply port 72c. Therefore, a regulatory means for preventing unexpected intrusion of grains into the supply port 72c is provided.

Then, in the embodiment as this regulating means, a shielding plate 83 is provided on the upper side of the release path R of the grains that are discharged from the bucket conveyor 62 and fall in a parabola from the rear to the front, and the shielding plate 83 is provided. Prevents the grains from falling onto the racen (supply rollers 77, 77) near the supply port 72c, and is rearranged with respect to the grains and the like housed in the spiral groove 77b of the supply rollers 77, 77 near the supply port 72c. It eliminates the collision of grains from the feed port 72c and prevents unexpected intrusion of grains into the supply port 72c.

More specifically, the shielding plate 83 is detachably attached to the measurement case 67 described above, and the shielding plate 83 is hung inside the shielding cover 76 that closes the upper side of the sampling chamber 68, and is detachably attached with a bolt. Then, like the supply rollers 77 and 77 provided so as to cross the grain release path R, the shielding plate 83 has its plate surface dropped onto the spiral of the supply rollers 77 and 77 and accommodated in the groove 77b. It is provided so as to cross the release path R on the better side of the grain, and when the grain that has fallen from the rear to the front hits the rear surface of the shielding plate 83, it is prevented from falling further forward and is near the supply port. The supply rollers 77 and 77 are prevented from falling onto the grains contained in the spiral groove 77b.

More specifically, as shown in FIGS. 9 to 11, the shielding plate 83 is hung from directly above the supply roller 77 on the rear side, and the lower end of the plate surface is along the axis of the supply roller 77 and It is provided close to the supply roller 77 so that the grains do not pass forward through the gap between the supply roller 77 and the lower end thereof. The width of the shielding plate 83 on the left and right is about 1/2 to 1/3 of the length on the left and right of the supply roller 77, and the shielding plate 83 is provided close to the left side where the supply port 72c is provided.

Therefore, by providing a shielding plate 83 for the grains accommodated in the spiral groove 77b of the supply roller 77 in the vicinity of the supply port 72c, which is likely to enter the measurement chamber unexpectedly through the supply port 72c, later. The collision of the grains can be eliminated, whereby the unexpected invasion of the grains contained in the spiral groove 77b into the supply port 72c can be effectively prevented.

Since the shielding plate 83 is not involved in the falling of grains onto the spiral away from the vicinity of the supply port 72c, the grains falling onto the spiral are supplied by the supply roller 77 as in the case where the shielding plate 83 is not provided. It can be introduced into the measurement chamber from the supply port 72c with the forward rotation drive of the above. Further, in the grains introduced into the measuring chamber at that time, excess grains are shaken off from the supply roller 77 on the front side up to the supply port 72c, and the grains are measured in a state where the grains are aligned in the spiral groove 77b. It can be supplied to the room without excess or deficiency.

Further, as a factor that the grains contained in the spiral groove 77b are pushed by the grains that have fallen later and unexpectedly enter the supply port 72c, the spiral groove 77b of the supply roller 77 exists, but the spiral mountain 77c on the feeding direction side is present. The grain sent within an angle of about 180 degrees at the end of the spiral, which is no longer present, is pushed toward the supply port 72c by the collision with the grain that has fallen later, and has a small diameter without the spiral mountain 77c. It is conceivable that the rotary shaft portion 77a of the above may enter the supply port 72c, or that the grain may jump up due to a collision with a grain that has fallen later, cross the spiral mountain 77c, and enter the supply port 72c.

Therefore, in the case of grains that are less likely to bounce due to collision with each other, such as paddy covered with shells, remove the shielding plate 83 or replace it with a narrow shielding plate 83 to replace a few grains in the measurement chamber. May be supplied. When the shielding plate 83 is worn due to collision with grains, it is removed and replaced with a new shielding plate 83. In such a case, since the shielding plate 83 is detachably attached to the shielding cover 76 with bolts, the shielding cover 76 can be easily removed from the measuring case 67 by removing the bolt with a knob. can.

Further, when the shielding cover 76 is removed from the measuring case 67 by removing the bolt with a knob and dust or the like adhering to the supply roller 77 or the glass plate 81 is removed or inspected through the upper opening 67b, the shielding plate 83 is used as the shielding cover. Since it is removed together with the 76, maintenance thereof can be easily performed without being hindered by the shielding plate 83. As shown by the alternate long and short dash line in FIGS. 10 and 11, if the U-shaped reinforcing plate 83a is fixedly provided on the non-acting surface of the shielding plate 83, the shielding plate 83 is prevented from being deformed due to collision with grains. Further, the U-shaped shape eliminates the gap between the shielding plate 83 and the reinforcing plate 83a to prevent the grains from accumulating, and the maintainability of the shielding plate 83 can be improved.

As described above, the outer peripheral surfaces of the supply rollers 77 and 77 are provided so as to cross the grain release path R. For example, a moisture meter 72 is attached to the front plate 67f and the supply rollers 77 and 77 are placed in the collection chamber 68. It may be provided so as to project from the front to the rear, and the outer peripheral surfaces of the supply rollers 77, 77 may be provided along the discharge path R of the grains that are discharged from the bucket conveyor 62 and fall in a parabola from the rear to the front. can. However, when the supply rollers 77 and 77 are arranged in this way, grains that fall in a parabola from the rear to the front enter the supply port 72c directly, or jump on the spiral of the supply rollers 77 and 77 and enter. There is a good chance that it will end up.

Further, when the shielding plate 83 is provided on the supply rollers 77, 77 arranged in this way, the shielding plate 83 is provided above the supply rollers 77, 77 so as to cover the supply port 72c, but the supply rollers 77, 77. It is necessary to provide the lower end of the shielding plate 83 away from the supply rollers 77 and 77 so as not to hinder the movement of the grains sent toward the supply port 72c, and the grains unexpectedly enter the supply port 72c through this gap. It is preferable to arrange the supply rollers 77 and 77 in the above-mentioned form in which there is a risk of entry and there is no such risk.

Then, when the grain measuring device 66 having the above configuration is attached to the general-purpose combine to perform the harvesting work, some of the grains transferred from the threshing device 4 to the grain tank 6 are dropped into the collection chamber 68. , The grains dropped on the supply roller 77 are supplied to the moisture meter 72 as a sample. Further, the moisture meter 72 measures the electrical resistance between the electrodes one after another in a state where the supplied grains are sandwiched between, for example, a pair of rotating rollers also used as electrodes and crushed in the measuring chamber. Furthermore, the average water content of a large number of grains whose temperature has been corrected using a calibration curve, the standard deviation, and the like can be obtained from the measured electrical resistance and the electrical resistance of the thermistor provided in the measurement chamber.

As a method for obtaining the water content of grains, an electric resistance type moisture meter as described above is known, a high frequency capacity type moisture meter for measuring the dielectric constant (high frequency capacity), mass and temperature of a sample, and a sample. An infrared moisture meter that measures the mass, dries it, and measures the mass again, or a near-infrared component analyzer that non-destructively measures the sample from the change in absorption rate by irradiating the sample with near-infrared rays is known. Therefore, these moisture meters can be selected and used as the moisture meter, and the form of the moisture meter is not particularly limited. Then, the water content and the like of the grains obtained by the measurement in this way are displayed on a monitor configured by the liquid crystal display device provided in the control unit 5, the optimum cutting time is determined, and the post-treatment of the harvested grains is performed. It can be useful for determining the drying method and the selection of the dryer.

On the other hand, the image of the grain accumulated in the storage chamber 69 taken by the camera 71 is displayed on the monitor also provided in the control unit 5, and the grain shape, wrinkle grain, rind grain, and rotting of the harvested grain are displayed. Preliminary removal of blue stands or change of cutting height, etc. based on the presence or absence of grains, crushed grains, damaged grains, adhesion of stem juice due to cutting of green stands, and presence of dirt due to adhesion of mud due to incompatibility of cutting height, etc. Alternatively, it can be useful for determining the necessity of cleaning grains after harvesting and color selection. Furthermore, these acquired data are transmitted to the management center, etc. using the wireless communication system and stored in the server as future information, or the image is processed immediately to automatically calculate the ratio of scabs and sewage. It is also possible to digitize and reply.

In the embodiment described above, two supply rollers 77 are provided facing each other in the front-rear direction. For example, the supply roller 77 on the front side is replaced with a round bar having a small diameter, and the feed roller 77 on the rear side is fed by the spiral. Only grains may be supplied to the moisture meter, and the round bar may be used to prevent the grains sent by the supply roller 77 from falling. In addition, as a regulatory measure to prevent unexpected intrusion of grains into the supply port 72c, an opening / closing body such as a camera shutter is provided on the front surface of the supply port 72c so that the opening / closing body is opened only when the supply roller 77 is driven in the forward rotation. It may be configured.

Further, the grain measuring device 66 may be provided in the grain release path for discharging the grains to the grain tank 6 by the horizontal spiral 63, and the self-de-combining for harvesting the grains of paddy rice or wheat may be an embodiment. The grain measuring device of the present invention may be provided to measure the water content of paddy rice or wheat, and the grain measuring device of the combine of the present invention is not necessarily limited to the above-described embodiment.

4 Threshing equipment 6 Glen tank 62 Bucket conveyor (grain raising equipment)
66 Grain measuring device 72 Moisture meter 72c Supply port 77 Supply roller 77b Helix groove 77c Helix mountain 83 Shielding plate (regulatory means)
R grain release route

Claims (6)

A water meter supply roller is placed in the grain release path of the grain raising device that transfers grains from the grain removal device to the grain tank, and the grains that have fallen on the racen of this supply roller are passed through the supply port as the rotation is driven. There is a measuring device that is introduced into the measuring chamber and the moisture content of the grains introduced into the measuring chamber is determined by a moisture meter. However, a grain measuring device in a combine is provided with a regulating means for preventing the grain from colliding with the dropped grain and unexpectedly entering the measuring chamber. The first aspect of the present invention, wherein the regulating means is composed of a shielding plate provided in the grain release path of the grain raising device, and the shielding plate prevents the grains from falling onto the racen in the vicinity of the supply port. A device for measuring grains in a combine. The outer peripheral surface of the supply roller of the moisture meter is provided so as to cross the grain discharge path of the grain raising device, and the shielding plate is dropped onto the spiral of the supply roller and is on the upper side of the grain contained in the groove. The device for measuring grains in a combine according to claim 2, wherein the device is provided in a grain release path. A supply roller is provided in the sampling chamber provided in the measuring device, and a shielding plate is hung inside the shielding cover that closes the upper side of the sampling chamber and attached detachably with bolts. When the shielding cover is removed together with the shielding plate, sampling is performed. The grain measuring device in a combine according to claim 2 or 3, wherein the supply roller provided in the chamber is configured to be capable of maintenance. A supply roller is provided in the sampling chamber provided in the measuring device, and a closing plate is provided to close the lower side of the sampling chamber. When the closing plate is closed, the sampling chamber becomes a storage chamber for depositing grains, and this storage is also provided. The grain measuring device in a combine according to any one of claims 1 to 4, wherein a camera for photographing grains deposited in a chamber is provided. An opening is provided below the closing plate of the collection chamber, and the grains whose water content has been measured to be discharged through this opening and the grains that fall by opening the closing plate are sent to the sorting chamber of the threshing device via the discharge tube. The device for measuring grains in a combine according to claim 5, wherein the combine is reduced.

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