JP2995746B2 - Grain discharging device - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a grain discharging auger provided in a combine or the like.

(Prior art)

The grains harvested by the combine or the like are temporarily stored in a grain tank, and are transferred to a transport vehicle or the like by a timely operation of a grain discharging auger. At this time, in order to uniformly deposit the grains on the transport vehicle, techniques for automating the operation of the grain discharging auger have been conventionally attempted. As an example, as described in Japanese Utility Model Application Laid-Open No. 61-43853, a sensor is provided near the discharge port of the grain discharge auger to detect the swelling of the grain, and based on the detection result, the sensor is mounted on the container of the transport vehicle. There is a technology for automatically turning a grain discharge auger to uniformly discharge grains. Further, as described in the embodiment of JP-A-63-148923, a sensor similar to that described above is provided, and the operation of the start switch automatically turns the grain discharging auger toward the carrier. There is also a technique for detecting the fact that the grain discharge port is located on the carrier of the carrier, and then starting the grain discharge and performing automatic turning slowly to make the grain accumulation uniform.

On the other hand, as disclosed in Japanese Unexamined Utility Model Application Publication No. 63-279719 and a microfilm disclosed in Japanese Utility Model Application Laid-Open No. 63-279719, a technique for making a grain discharge auger extendable has been attempted.

[Problems to be solved by the invention]

In the prior art described above, the discharge auger attempts to deposit grains uniformly on the transport vehicle only by the turning operation. However, according to this, the movement position of the discharge port of the grain discharge auger is limited on the turning locus of the grain discharge auger. Therefore, the grains can be discharged only to a very small area with respect to the grain receiving area on the transport vehicle. For this reason, the discharged grains are piled up in piles, and the desired uniformity cannot be achieved.

In addition, although the technology for making the grain discharging auger extendable is disclosed in the microfilm of Japanese Utility Model Application Laid-Open No. 63-201427 and JP-A-63-279719, this grain discharging auger is automatically used. There is no disclosure of a technique for expanding and contracting the web. In addition, in this configuration, the discharge tube on the moving side and the discharge tube on the fixed side expand and contract on the coaxial core, so that the transfer helical shaft and the expansion and contraction (polymerization) structure of the transfer helical provided therein are complicated. Would.

According to the present invention, the grain can be spread over a wide area of the grain receiving area of the transport vehicle without frequently moving the turning fulcrum position of the grain discharge auger (that is, the position of the combine body) or the position of the transport vehicle during the grain discharging operation. It is another object of the present invention to implement a grain discharge auger capable of discharging and to simply configure the grain discharge auger.

[Means for solving the problem]

The present invention employs the following technical means to solve the above-mentioned problems.

That is, the grain discharging auger 1 according to claim 1 is configured to be expandable and contractable, and an automatic expansion / contraction control unit 5 that automatically expands and contracts the grain discharging auger 1 in accordance with the deposition height of the discharged kernels is provided. The structure of the grain discharging device, and the one discharging tube 32a containing the transfer spiral 31 and the other discharging tube 32b containing the transfer spiral 38 according to claim 2.
Are configured to be movable along the longitudinal direction of the discharge tubes 32a and 32b, and the transfer spiral shaft 4 of the one discharge tube 32a is
0 and the lower transfer side of the transfer spiral shaft 41 of the other discharge tube 32b are interlocked via an extendable transmission means 44 so that the grain discharge auger 1 is configured to be expandable and contractable. An automatic expansion / contraction control means 5 for automatically expanding / contracting the grain discharge auger 1 in accordance with the accumulation height of the discharged grains is provided.

Thus, in the first aspect of the present invention, the grain discharging auger 1 automatically expands and contracts by the automatic expansion and contraction control means 5 in accordance with the pile height of the discharged kernels.

As a result, the grains can be discharged to a position that cannot be achieved only by turning the grain discharging auger 1, and the range of discharging the grains is expanded. Moreover, the grain discharge auger 1
Automatically expands and contracts according to the pile height of the discharged kernels,
There is no need to manually expand and contract the grain discharge auger 1, and labor can be saved.

According to the second aspect of the present invention, the other discharge tube 32b containing the transfer spiral 38 is connected to the one discharge tube 32a containing the transfer spiral 31 along the longitudinal direction of the discharge tubes 32a and 32b. And thereby move the grain discharge auger 1
Can be expanded and contracted. And one of the discharge tubes 32a
The transfer spiral shaft 41 of the other discharge cylinder 32b rotates in conjunction with the transfer spiral shaft 40 via the transmission means 44 from the lower side of the transfer spiral shaft 40, whereby the grain discharging operation is performed.

With this configuration, each transfer spiral provided in each of the discharge tubes is compared with a configuration in which the moving-side discharge tube and the fixed-side discharge tube are expanded and contracted on a coaxial core as in the related art. The expansion and contraction configuration of the shaft and each transfer spiral becomes simple.

Thus, the grain discharging auger 1 thus configured
Is automatically expanded and contracted by the automatic expansion and contraction control means 5 in accordance with the pile height of the discharged grains.

As a result, the grains can be discharged to a position that could not be reached only by turning the grain discharge auger 1, and the range of discharging the grains is expanded. Moreover, the grain discharge auger 1
Automatically expands and contracts according to the pile height of the discharged kernels,
The labor for manually expanding and contracting the grain discharge auger 1 is reduced, and labor can be saved.

〔The invention's effect〕

As described above, the invention according to claim 1 configures the grain discharge auger 1 so as to be extendable and contractable, and the grain discharge auger 1
Is provided with an automatic expansion / contraction control means 5 for automatically expanding / contracting according to the pile height of the discharged kernels. In addition to the above, the labor for manually expanding and contracting the grain discharge auger 1 can be reduced, and labor can be saved.

In addition, the invention according to claim 2 is characterized in that, for one discharge tube 32a containing the transfer spiral 31 therein, the other discharge tube 32b containing the transfer spiral 38 is arranged along the longitudinal direction of these discharge tubes 32a, 32b. In addition to being configured to be movable, the lower transfer side of the transfer spiral shaft 40 of the one discharge tube 32a and the lower transfer side of the transfer spiral shaft 41 of the other discharge tube 32b are interlocked via extendable transmission means 44. The grain discharging auger 1 is configured to be expandable and contractable, and an automatic expansion and contraction control means 5 for automatically expanding and contracting the grain discharging auger 1 in accordance with the accumulation height of the discharged kernels is provided. Since the grain discharging device is used, the work area for discharging the grain can be expanded to improve the working efficiency, and the labor for manually expanding and contracting the grain discharging auger 1 is reduced, thereby saving labor. And a grain discharging auger 1 capable of expanding and contracting in this way. It can be constructed simpler.

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail.

 First, the structure of the body 6 of the ordinary combine will be described.

A traveling device 9 including an endless track zone 8 is provided below the machine frame 7. In addition, a cabin 10 in which a steering device is provided is provided on the upper front side of the machine frame 7. The cabin
A grain tank 11 having a grain discharge auger 1 is continuously provided behind the grain auger 1. A threshing device 12 is connected to the side of the grain tank 11. And, in front of the threshing device 12, a reaper transport device 13
Is provided so as to be vertically rotatable. The reaper transport device 13 includes a reaper 14
And a transfer device 15 connected to the rear of the device. The cutting unit 14 includes a stalk guiding frame 16, a weeding body 17, a cutting blade 18, a stalk collecting / feeding device 19, and a scraping reel 22 whose position can be adjusted vertically and longitudinally by hydraulic cylinders 20 and 21. . The transfer device 15 has a transfer elevator inside. The harvesting and transporting device 13 is configured to be rotatable up and down by a hydraulic cylinder 23 with the vicinity of the rear end of the transporting device 15 as a fulcrum. 24 is an engine room.

 Next, the grain discharge auger 1 will be described.

A frying unit 27 having a transfer spiral 26 interlocked with the transfer spiral 25 at the bottom of the grain tank 11 is set up. The frying unit 27 is a gear
By the engagement of 28 and 29, the motor 30 can be driven and rotated around the vertical axis P. Lateral feed unit 32 containing a transfer spiral 31 interlocked with the transfer spiral 26 of the above-mentioned grain raising unit 27
Is connected to the lifting part 27 so as to be rotatable up and down around a horizontal axis Q around a hydraulic cylinder 33.

 Further, the lateral feed portion 32 is divided into two discharge tubes.

The transfer spiral 31 is rotatably housed in one of the discharge tubes 32a, and an opening 34 is provided at the bottom of the discharge tube 32a at the end of the transfer. One of the discharge tubes 32a has a U-shaped cross section and is closed at the upper part.
An opening 34 is formed by notching the receiving gutter 35, and a sliding plate 36 having a predetermined length is provided at the tip.

The telescopic cylinder 3 is provided in the space below the gutter 35 of the discharge cylinder 32a.
7 is provided.

The other discharge tube 32b has a cylindrical portion in which the transfer spiral 38 is rotatably mounted as an internal bearing, and is inserted into the lower portion of one discharge tube 32a. An opening 39 for receiving the falling grains is opened. The section from the receiving port 39 to the rear portion is formed in a U-shape, and is provided at an appropriate length along the inside of the receiving gutter 35 of the transfer spiral 31 of the one discharge tube 32a. 2 is an outlet.

Hydraulic operation on the telescopic cylinder 37 causes one of the discharge cylinders
The other discharge tube 32b is configured to be extendable and contractible along the discharge tube 32a with respect to 32a.

The configuration is such that a transfer spiral 38 shaft 41 of the other discharge tube 32b is transmitted from a transfer spiral 31 shaft 40 of one discharge tube 32a. A chain case 42 is provided at the distal end of the discharge tube 32b, and a spline connecting portion 44 (transmission means 44) is provided between the shaft 43 of the chain case 42 and the transfer spiral 13 shaft 40, and the shaft 43 and the other A transmission chain is bridged between the discharge cylinder 32b and the transfer spiral 38 shaft 41.

When the telescopic cylinder 37 expands and contracts by hydraulic operation of the telescopic cylinder 37, the inside of one discharge cylinder 32a
2b slides. When one of the transfer spirals 31 is transmitted, the shaft 43 is transmitted from the transfer spiral 31 shaft 40 via the spline connecting portion 44, and the other transfer spiral 38 is driven and rotated from the shaft 43.

Grains transferred by the transfer spiral 31 in one discharge tube 32a are received from the opening 34 in the receiving port 3 of the other discharge tube 32b below.
It is received by 9 and transferred by the transfer spiral 38 and discharged from the discharge port 2.

Next, the control mechanism of the grain discharge auger 1 and its operation will be described in detail.

A potentiometer 45 for detecting the horizontal rotation angle of the grain discharge auger 1, that is, the rotation angle of the graining auger 27 about the vertical axis P, is provided close to the gear 28. The potentiometer 45 may detect the rotation of the gear 28 electromagnetically, or may directly mesh with the gear 28 to detect the rotation.

Further, a potentiometer 46 for detecting a vertical rotation angle about the horizontal axis Q of the horizontal feed portion 32 of the grain discharge auger 1 is connected to the grain raising portion 27 and the horizontal feed portion 32. Provide near the sliding surface.

A stroke sensor 47 for detecting the length of expansion and contraction of the other discharge tube 32b with respect to the one discharge tube 32a is provided in the vicinity of the spline connection portion 44.

The auger receiver 48 that stores and supports the lateral feed portion 32 of the grain discharge auger 1 is provided with a storage detection sensor 49 that detects whether the horizontal feed portion 32 is stored.

Further, an ultrasonic sensor 50 integrally provided with a transmitter 3 for transmitting ultrasonic waves downward and a receiver 4 for receiving reflected waves is provided near the discharge port 2 of the grain discharge auger 1.

Further, a control device group in the cabin 10 is provided with an operation switch group for performing automatic rotation control for automatically rotating the grain discharge auger 1 from the auger receiver 48 to a set position.

The operation switch group includes an overhang position setting volume 51 that can arbitrarily set a position where the grain discharging operation is performed, and an automatic overhang switch 52 that starts an automatic circuit from the auger receiver 48 of the grain discharging auger 1 to the discharging position. An automatic storage switch 53 that starts automatic rotation from the discharge position to the auger receiver, and an emergency stop switch 54 that stops rotation in an emergency.

In addition, by operating after moving the grain discharge auger 1 to the discharge operation position, the control device in the cabin 10 is operated.
An automatic switch 55 for activating the control device 5 for automatically rotating and expanding and contracting the grain discharging auger 1 while uniforming the height of the deposited grains while discharging the grains.
Is provided.

Next, a control device 5 (automatic expansion / contraction control means 5) for performing the above-described automatic control will be described.

The overhang position setting volume 51, automatic overhang switch
52, automatic storage switch 53, emergency stop switch 54, automatic switch 55, storage detection sensor 49, vertical rotation angle detection potentiometer 46, lateral rotation angle detection potentiometer 45, extension length detection Stroke sensor 4
7. Connect the ultrasonic sensors 50 to the controller 56 respectively.

The controller 56 mainly includes a CPU, an A / D conversion circuit, an input interface, an output interface, a ROM, and a RAM.The controller 56 processes input information from each of the switches and sensors, generates an output signal, and outputs an output signal to the hydraulic cylinder 33. The solenoids 57 and 58 of the electromagnetic valve for operating the telescopic cylinder 37 are excited, and the motor 30 is rotated.

 The control operation will be described below.

The harvested grain that has been subjected to the combine operation is temporarily stored in the grain tank 11. And when the grain tank 11 becomes full after the combine work or during the work,
It is necessary to transfer the grains to the transport vehicle 59 and the like.

At this time, the transport vehicle 59 is laid on the combine. Then, the worker manually or automatically moves the grain discharge auger 1 so that the discharge port 2 thereof is above the loading platform 60 of the transport vehicle 59. When performing this movement automatically, the operator first turns the overhang position setting volume 51 to set the position where the discharging operation is performed. When the automatic extension switch 52 is pressed, the grain discharging auger 1 is moved upward until the reference value R stored in the ROM from the auger receiver 48 matches the detection value from the vertical rotation angle detection potentiometer 46. To rotate. Thereafter, the grain discharge auger 1 is rotated until the value set by the overhang position setting volume 51 and the detection value from the lateral rotation angle detection pot tension meter 45 match, and then stopped. The analog signals from these potentiometers 46 and 45 are converted into digital signals via the A / D conversion circuit of the controller 56, and are compared and calculated with the reference values and the set values. Thus, the solenoid 57 of the electromagnetic valve for operating the hydraulic cylinder 33 is excited, and the motor 30 is energized.

Next, the operator presses the automatic switch 55. by this,
Automatic kernel discharge control is started. Ultrasonic sensor 50
Transmits and receives at minute time intervals and measures the distance to the object. This transmitter 3 and the reflected wave from the time T ₀ which is outgoing from the time T ₁ which is received by the receiver 4 from (T ₁ -
T ₀ ) measures the elapsed time and converts it to a distance.
This is performed by the CPU.

Obtains distances between the bed 60 bottom 60a and ultrasonic type sensor 50 of the truck 59 by ultrasonic sensor 50 before grain discharge, controller 56 so as first grain deposition level A ₁
In the RAM.

Start the grain discharge, grain detection value setting region K (e.g. 50 mm) which H ₁ is stored in the ROM from the first grain deposition level A ₁ in pile height in that position it has only changed When determined by the comparison circuit of the CPU, the CPU energizes the motor 30 via the output interface, and rotates the grain discharging auger 1 by the set angle θ stored in the ROM. In addition to or separately from this rotation, a pulse is output from the CPU to the operating cylinder 58 of the telescopic cylinder 37 via the output interface to make the grain discharge auger 1 expand and contract, and the grain discharge port 2 is turned on.
The movement by the set stroke L stored in the ROM is also performed.

In this manner, the discharge port 2 of the grain discharge auger 1 moves on the carrier 60 of the transport vehicle 59, and discharges the grains so that the pile height of the grains is uniform in the set area K.

Then, after the homogenization has been done, RAM height K from the loading platform 60 of the grain deposition surface as a second grain deposition level A ₂
To memorize.

Thereafter, the grain discharging operation is continued as described above. The detected values of H ₂ height grain deposition surface, performs the similar control to increase only the setting region K from the second grain deposition level.

Thus, as described above, the grain accumulation level at which the height of the surface of the accumulated grain is equalized is set to the first (A ₁ ), the second (A ₂ ), and the third (A 3).
(A ₃ ) ... control while resetting. As a result, the pile height of the grain is K, (K × 2), (K × 3), and so on.
The grains can be deposited uniformly on the top.

In FIGS. 1 and 2, the discharge port 2 of the grain discharge auger 1 may come to the position (A) due to the rotation of the set angle θ and the expansion and contraction of the set stroke L. In this case the measures the elapsed time until the time T ₃ to the receiver 4 receives the reflected wave from the ground from the originating time T _2, from the transmitter 3 of ultrasonic sensor 50 (T ₃ -T ₂₎ this Perform arithmetic processing. And
The grain deposition stored in RAM Level _{A 1 · A 2 · A 3} ...
Compare with Then, it is determined that the operation processing value (ground level) of (T ₃ −T ₂ ) is abnormally low (abnormal in the history of the detection data) as compared with the grain accumulation levels A ₁ , A ₂ , A ₃ . do it,
The grain discharge auger 1 is returned to the position before coming to the detection position (a) in the reverse direction by the output from the output interface.

When the outlet 2 of the grain discharge auger 1 comes to the position (b) above the cabin 61 of the transport vehicle 59, an abnormal value is detected by the ultrasonic sensor 50 as described above and comes to this position (b). Return to the previous position in the opposite direction.

After completion of the grain discharging work, the work vehicle
Pressing 53 stops the grain discharge drive, and the grain discharge auger 1
It rotates vertically until the reference value R stored in the ROM matches the detection value from the vertical rotation angle detection potentiometer 46. (If it was manually moved up and down)
Thereafter, the rotation is performed in the horizontal direction until the position of the auger receiver 48 stored in the ROM matches the detection value from the horizontal rotation angle detection potentiometer 45. Thereafter, the storage detection sensor 49 provided on the auger receiver 48 rotates downward until the grain discharge auger 1 is detected, and stops.

By pressing the emergency stop switch 54 during automatic extension and automatic storage of the grain discharge auger 1, the movement of the grain discharge auger 1 can be immediately stopped.

[Brief description of the drawings]

1 is a side view for explanation, FIG. 2 is a plan view for explanation, FIG. 3 is a rear view for explanation, FIG. 4 is a control block diagram, FIG. The figure is a sectional view of the main part of the grain discharge auger, FIG. 6 is a sectional view taken along line II of FIG. 5,
FIG. 7 is a sectional view taken along the line II-II of FIG. 5, and FIG. 8 is an overall side view of the combine. DESCRIPTION OF SYMBOLS 1 ... Grain discharge auger 5 ... Control device (automatic expansion / contraction control means) 31 ... Transfer spiral 32 ... Discharge cylinder 38 ... Transfer spiral 40 ... Transfer spiral shaft 41 ... Transfer spiral shaft 44 ... ... Spline connection (transmission means)

Continuation of the front page (56) References JP-A-63-148923 (JP, A) JP-A-61-257118 (JP, A) JP-A-63-279719 (JP, A) (U, U) Jikkai 63-201427 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01F 12/46

Claims (2)

(57) [Claims] An automatic expansion / contraction control means (5) for automatically expanding and contracting the grain discharge auger (1) in accordance with the accumulation height of the discharged grains is provided. Characterized grain discharging device. 2. With respect to one discharge tube 32a containing the transfer spiral 31, the other discharge tube 32b containing the transfer spiral 38 is configured to be movable along the longitudinal direction of the discharge tubes 32a, 32b. At the same time, the lower transfer side of the transfer helical shaft 40 of the one discharge tube 32a and the lower transfer side of the transfer helical shaft 41 of the other discharge tube 32b are interlocked via extendable transmission means 44 to discharge the kernel. A grain discharging apparatus, wherein the auger 1 is configured to be expandable and contractable, and an automatic expansion and contraction control means 5 for automatically expanding and contracting the grain discharging auger 1 in accordance with the accumulation height of the discharged grains is provided.