JPH0131004Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an improvement of a thresher that is equipped with a winnowing machine for wind-selecting threshed grains and that continuously threshes and sorts grains.

"Prior Art" Conventionally, as shown in Japanese Utility Model Publication No. 40-13223, there has been a technology that increases or decreases the flow rate of the sorting air depending on the humidity or the like.

``Problems to be solved by the invention'' In the above-mentioned conventional technology, the screening air volume was only manually adjusted, and the adjustment required operator experience and testing work, making it difficult to obtain an appropriate screening air volume. In addition to being difficult to obtain, there were also problems in that the screening air volume could not be adjusted continuously.

In addition, as shown in Japanese Patent Application Laid-Open No. 52-136759, there was a technology for automatic control by installing a sensor for detecting dry room materials, but this method directly detected the shed material from the handling cylinder by contacting it. This not only obstructs the flow of the shed material and reduces the ability to take out the shed material, but also detects the shed material mixed with straw and other contaminants.
The moisture content of the grains cannot be properly detected due to moisture such as dew adhering to the straw, as well as the moisture in the straw, which contains more moisture than the grains. There were functional problems, such as the fact that the air volume for sorting grains after grains had been removed by oscillating sorting etc. tended to be inappropriate.

``Means for Solving the Problems'' However, the present invention is a threshing machine in which the sorting air volume is manually adjusted. The present invention is characterized in that a sensor is provided to detect the grains, and the flow rate of the sorting air can be varied based on the moisture of the grains in the sorting air path.

"Function" Therefore, it is possible to prevent the sensor from obstructing the flow of grains subjected to oscillating sorting, wind sorting, etc., and it is possible to properly maintain the function of extracting grains from the oscillating motion. Since the moisture in the grain is detected after removing straw etc. by sorting etc., it is possible to prevent moisture from being erroneously detected due to dew adhering to the straw or moisture in the straw before harvesting. The air volume can be continuously adjusted to the optimum level for grain sorting, and the air sorting function can be significantly improved compared to conventional methods.

"Embodiments" Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Fig. 1 is a side view of the combine harvester, and Fig. 2 is a plan view of the same. A machine stand supported by the track frame 1; 6 a threshing section with feed chains 7 stretched on the left and right sides; a threshing section incorporating a handling cylinder 8 and a processing cylinder 9; 10 a grain lifting cylinder 11 for taking out grains from the threshing section 6; A paddy tank 12 is provided with a cutting blade 13 and a grain culm conveyance mechanism 14 and is installed in front of the threshing unit 6. 15 is a straw processing unit installed at the rear of the threshing unit 6. 16 is a combine harvester. An engine drives each part; 17 is a driver's cab equipped with a driver's seat 18 and a driving operation section 19; 20 is an elevator control lever that drives and controls the lift cylinder 5 to raise and lower the reaping section 12 together with the machine base 3; The structure is such that the culm is continuously harvested and threshed.

As shown in FIGS. 3 to 5, handling teeth 21, 22
A handling cylinder 8 and a processing cylinder 9 each having a
The crimp nets 26 and 27 are stretched below the crimp nets 26 and 25, and the reinforcing frames 28 of each crimp net 26 and 27...2
9... is erected on the top surface of the crimp net 26, 27 to protrude into the rotation locus of the handling teeth 21, 22, and removes straw waste accumulated on the top surface of the crimp nets 26, 27 between the handling teeth 21, 22 and the reinforcing frame 2.
8 and 29. Also, the front and rear frames 30, 3 of the crimp net 26 below the handling chamber 24
1 is removably fitted into the inlet supply plate 32 and the outlet partition plate 33, and a door 34 for mounting the crimp net 26 is provided on the left outer surface of the machine casing 23 so as to be openable and closable. A pin 3 for connecting a string 36 such as a wire to the inner frame 35 of the crimp net 26
7 is fixed, and the pin 37 and the positioning pin 40 are inserted into the flange 39 of the inner wall 38 of the handling chamber 24 from below, and the machine casing 2 outside the handling chamber 24 is fixed.
3. The cord 36 is wound around a winding roll 41 supported on the upper part, and a handle 42 for rotating the roll 41 is attached to the front outside of the machine casing 23, and the handle 42 is detachably fixed. A tool 43 is provided, and the inside of the crimp net 26 is suspended and fixed by the string 36, and the inside of the crimp net 26 is lowered by loosening the string 36. The outer frame 44 of the crimp net 26 is removably fixed to the entrance bottom plate 45 of the handling room 24 with bolts 46, the door 34 is opened, the bolts 46 are removed, and the outer frame 44 is removed from the entrance bottom plate 45. The cord 36 is extended by operating the handle 42, and the crimp net 26 is pulled out from the opening of the door 34.
While taking out the pin 3 to the outside of the machine casing 23, the cord 36 is wound up by operating the handle 42, and the crimp net 26 is inserted into the machine casing 23 through the opening of the door 34.
The inner frame 35 is locked to the flange 39 via bolts 7 and 40, the outer frame 44 is fixed to the inlet bottom plate 45 via bolts 46, and the crimp net 26 is formed to be detachable.

As shown in FIGS. 3, 4, 6 to 8, a swinging sorting board 47 is placed horizontally below the crimp nets 26, 27, and the chaff sheave 48, grain sheave 49, and stroke rack 50 are placed on the sorting board 47. by swinging the sorting board 47 to separate the handling chambers 24,
A winnowing machine 51 for sorting the pellets falling from the 25 and wind-selecting the pellets, a first gutter 52 and a first conveyor 53 for taking out the grains, and a second reducing machine for mixing straw waste and grains. Equipped with a second gutter 54 and a second conveyor 55 for taking out objects, a third gutter 56 and a dust suction/exhaust fan 57 for discharging straw waste outside the machine,
It is formed so that the shed particles falling from the handling chambers 24 and 25 are continuously sorted. Glensieve 49
A non-contact sensor 58 for detecting wet and dry material is provided to detect the moisture of grains (hulled material) falling into the first gutter 52. is fixed, microwaves are emitted from the sensor 58 to the upper surface of the first gutter 52 via the non-metallic plate 61, and the microwaves are received by the sensor 58 and the humidity of the shed particles is measured via the amplifier 62. The sensor 58 is installed at a position that non-contact detects the moisture of the grains in the sorting air duct after the oscillating sorting which removes impurities such as straw. Based on the humidity of 51
The selection air volume is configured to be variable.

In addition, a driven pulley 6 rotates integrally with the winch 51.
3 to the Karaoke shaft 64, and the engine 16
V is applied to the drive pulley 65 for continuously variable transmission that transmits the output.
The pulley 63 is interlocked and connected via a belt 66, and the drive pulley 6 is connected via a two-position, three-port electrohydraulic switching valve 68 having a speed increasing solenoid 67.
The hydraulic cylinder 69 installed in the hydraulic pump 70
to be hydraulically connected. A drive circuit for the solenoid 67 includes a comparator 72 that produces an output when the moisture of the shed particles detected by the sensor 58 is high and the output of the amplifier 62 is larger than a set value adjusted by the variable resistor 71. A threshing switch 7 is connected to a comparator 72 and a manual speed increasing switch 74, respectively, and is interlocked with a threshing clutch lever 75 of the operating section 19 shown in FIG.
The operating power source 78 is applied to the solenoid 67 through the main switch 77 and the solenoid 6, and when the moisture of the grains that fall most into the gutter 52 increases under the threshing drive state, this is detected by the sensor 58. The winnowing machine 51 is rotated at an increased speed to increase the amount of air to be selected. Further, an auxiliary flow grain plate 80 is connected to the upper end of the rear side of the first gutter 52 via a support shaft 79 so as to be extendable and retractable, and the support shaft 79 is supported between the opposing side plates 60, 60. The rotation operation camera 81 is fixed to one end, and the opening 8 of the outermost machine casing 23 is
2 to expose the camera 81 and the direction indicator board 83.
is attached to the outer surface of the opening 82, and the auxiliary flow grain plate 80 is raised and lowered from the outside of one side of the threshing section 6 through the shot 81, while a support spring 84 is attached to the inner end of the support shaft 79.
The auxiliary flow grain plate 80 is turned upside down when sorting grains that are likely to break, such as wheat, and the first gutter 52 is energized.
It is formed to shorten the culm and reduce the amount of culm mixed into the grain.

As shown in FIGS. 3 and 9 to 11, a straw removal cutter 87 having a plurality of sets of disc cutters 85 and 86 is provided in the straw removal processing section 15 on the rear side of the threshing section 6.
A cut straw discharging fan 88 is provided below the disc cutters 85, 86, and a collection table 90 is attached to the rear side of the cutter cover 89, which is connected to the feed chain 7 to collect the waste straw, which is the threshed culm. The cutter 8 removes the straw chain 91 to be carried out.
7 and the focusing table 90. Said cutter 87
A straw disposal switching plate 92 for opening and closing the upper part is attached, and the switching plate 92 is connected to the lifting lever 20 so that the upper part of the cutter 87 is opened in conjunction with the lifting operation of the lifting lever 20, and the collecting table 90 is When the used straw is concentrated, the reaping section 12 is operated by operating the lever 20, such as when turning at the edge of a ridge.
The switching plate 92 is moved in conjunction with the rise of the cutter 87 to open the upper part of the cutter 87 to prevent the uncut straw on the collecting table 90 from falling into the turning place and to facilitate the next turning. . Further, the cut straw discharge port 9 at the lower part of the cutter cover 89 is used to discharge the cut straw to the outside of the machine by the cut straw discharge fan 88.
A shutter 94 for opening and closing the shutter 94 is provided, and an opening control lever 96 is provided for opening and adjusting the shutter 94 to any angle around a fulcrum shaft 95. Discharge guide plates 98... which are oscillated and rotated are arranged side by side, for example, the left and right guide plates 98... face inward, the central guide plates 98, 98 face outward,
Each guide plate 98 is fixed to the shutter 94 via a wing nut 99 so that the discharge direction can be adjusted, and the cut straw is guided from the discharge port 93 by each guide plate 98 according to its properties. It is formed so that it is uniformly spread over the cut surface of the field.

The present invention is constructed as described above, and when a combine harvester is run to continuously reap and thresh grain culms, the sloughed material falling below the handling chambers 24 and 25 is sorted by the swinging sorting board 47. , when grains (hulled material) fall from the grain sieve 49 onto the upper surface of the first gutter 52, microwaves from a non-contact sensor 58 are applied to the grains, and the moisture of the grains is detected by the sensor 58; When the moisture of the grain increases, the speed-increasing solenoid 67 is excited by the output of the comparator 72 to increase the speed of the drive pulley 65.
1 is rotated at an increased speed to increase this sorting air and perform air selection of moisture.If the grains on the top surface of the first gutter 52 are relatively dry with little moisture, the output of the sensor 58 will be The speed decreases, the speed increasing solenoid 67 is held off, and the set selection air is used for wind selection.

``Effect of the invention'' As is clear from the above examples, the present invention eliminates moisture from grains in the sorting air passage after removing foreign matter such as straw in a threshing machine in which the sorting air volume is manually adjusted. A sensor 58 for contact detection is provided, and the sorting air volume can be varied based on the moisture of the grains in the sorting air path. It is possible to prevent grains from being obstructed by dust and dirt, and to properly maintain the grain flow extraction function.In addition, since moisture in the grains is detected after removing straw etc. by shaking sorting, etc., it is possible to prevent grains from adhering to straw before reaping. It is possible to prevent false detection of moisture due to dew or moisture in straw, etc., and it is possible to continuously adjust the air volume to the optimum level for grain sorting, significantly improving the wind sorting function compared to conventional methods. It has practical effects such as:

[Brief explanation of drawings]

Fig. 1 is a side view of a combine harvester showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a sectional side view of the threshing section, Fig. 4 is a longitudinal sectional view, and Fig. 5 is the same sectional view. A plan view, FIG. 6 is an electric circuit diagram for controlling the winch, FIG. 7 is a drive system diagram of the winch, FIG. 8 is a partial explanatory diagram of the sorting section, FIG. 9 is a rear perspective view of the combine harvester, and FIG. 10 11 is a partial side view of the straw removal processing section, and FIG. 11 is a partial explanatory diagram thereof. 58...Non-contact sensor.

Claims (1)

[Scope of utility model registration request] In a threshing machine that manually adjusts the sorting air volume,
A sensor is installed that non-contact detects the moisture of the grains in the sorting air channel after removing foreign matter such as straw, and the sorting air volume is configured to be variable based on the moisture of the grains in the sorting air channel. Characteristic threshing machine.