JPH0480648B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a harvester.

[Conventional technology]

Conventionally, in a harvester, grain culm has been fed to a threshing device manually.

[Problem that the invention seeks to solve]

When using conventional harvesters to thresh grain culms that have been dried on long rice racks, if one person is working,
Generally, the grain bundles present at a predetermined length of the rice rack are unloaded from the rice rack and fed to a threshing device, and after this feeding, the machine is moved a predetermined distance and then stopped, and then
The operation of lowering the grain culm bundle from a predetermined length of the rice rack and supplying it to the threshing device, and moving the machine unit distance by unit. This requires repeated operations, and it is not only disadvantageous in terms of labor as it requires the work of lowering the grain bundles from the rice racks, but also requires the machine to stop many times.
Work efficiency was decreasing because the worker had to go back and forth between the aircraft and the rice racks many times. On the other hand, when multiple people work together, including a person who unloads the grain bundles from the rice racks and feeds them to the threshing equipment, and a person who operates the machine, the work can be made more efficient because there is almost no need to stop the machine. It was necessary to unload the grain culms, which was disadvantageous in terms of labor.

An object of the present invention is to provide a harvester that can thresh grain culms hung on rice racks without unloading the grain culms from the rice racks and without stopping the machine, while reliably preventing grain culms from clogging or falling from the rice racks. Our goal is to provide the following.

[Means for solving problems]

In the harvester according to the present invention, a clamping and conveying device for supplying grain culms is provided at the starting end of the threshing device in a state where the receiving port is located forward on the lateral outside of the self-propelled machine body, and the pressing force of the receiving port against the grain culms of the rice rack is provided. A control mechanism is provided to automatically operate a travel speed adjustment mechanism of the self-propelled aircraft based on information from the sensor so that the pressing force is equal to or less than a set value. Its functions and effects are as follows.

[Effect]

The grain culm conveyance device to the threshing device is a clamping type, and the receiving port is located forward on the outside of the traveling machine, so that the machine can be moved close to the top of the rice rack so that the receiving port moves close to the top of the rice rack. As the machine moves, the grain culm bundles in the rice racks sequentially enter the receiving opening and are held by the conveyor, and then pulled off from the rice rack by the conveyor action of the conveyor and supplied to the threshing device. be done. In other words, simply by driving the machine so that the receiving port moves along the rice racks, grain culm bundles are removed from the rice racks and grain culms are supplied to the threshing device automatically.

Furthermore, even if the grain culm bundle parallel density of the rice rack changes, the machine running speed is too fast for this density, and the receiving and transporting process of the conveyor device cannot keep up with the grain culm bundles at the receiving port. The control mechanism automatically adjusts the aircraft's running speed to prevent problems such as stagnation.

〔Effect of the invention〕

Therefore, the work of threshing grain culms that have been dried on rice racks can now be done efficiently and easily even by one person by simply moving the machine so that the receiving port moves along the rice racks.

Moreover, regardless of changes in grain culm bundle parallel density,
By automatically controlling the speed to prevent grain culm bundles from accumulating at the receiving port, clogging may occur due to grain culm accumulation, resulting in poor conveyance, or grain culm bundles may be pushed in the direction of movement of the aircraft by the conveyor. Problems such as rice being moved and falling off the edge of the rice rack can now be easily prevented without having to manually control the speed.

〔Example〕

As shown in FIGS. 3 and 4, a threshing device 4 is mounted in front of the driving section 3 of the self-propelled aircraft, which has a crawler traveling device 1, a control section 2, etc. located at the rear end of the aircraft, and A bagging unit 6 for grains from the unloading cylinder 5 of the device 4 is provided behind the driving unit 3, and a conveying device 8 for supplying grain culms to the starting end of the threshing feed chain 7 of the threshing device 4 is installed in the threshing device 4. It is installed on the side of the harvester to form a harvester.

The grain culm conveying device 3 is constructed as shown in FIGS. 1 and 2 as follows.

That is, a starting end frame 12 is connected via an intermediate frame 11 to the front end of a terminal end frame 10 in the longitudinal direction of the aircraft fixed to the self-propelled aircraft via a support 9, and a first endless chain is connected to the starting end frame 12. 13 is rotatably mounted, and this first
Grain culm holding rail 14 compatible with chain 13
is attached to the support 15 of the starting end side frame 12 via the swinging arm 16 so as to be able to freely swing toward and away from the first chain 13, and the starting end side transfer device portion 8a is connected to the receiving port 30 of the self-propelled aircraft. It is configured to be located laterally outward. The intermediate frame 11
A second endless chain 17 is rotatably attached to the support 1 of the intermediate frame 11.
9 is swingably attached to the second chain 17 via a swing arm 20 so as to move toward and away from the second chain 17, thereby forming an intermediate conveying device portion 8b. A third endless chain 21 is rotatably attached to the end-side frame 10, and a grain culm holding rail 22 corresponding to the third chain 21 is attached, and a swing arm 24 is attached to the support 23 of the end-side frame 10. attached so as to be swingable so as to approach and separate from the third chain 21 through the
It constitutes a terminal end side transport device portion 8c. Then, the conveyance end side sprocket of the third chain 21 is interlocked with the threshing feed chain 7 via the transmission case 25, and the conveyance start end side sprocket of the third chain 21 and the conveyance end side sprocket of the second chain 17 are connected to one sprocket. The first to third chains 13, 17 are interlocked by a rotation support shaft 26, and the sprocket at the start end of the second chain 17 and the sprocket at the end of the transport end of the first chain 13 are interlocked by a single rotation support shaft 27. , 21 are configured to be driven by transmission from the threshing feed chain 7. The conveyance start end of the first chain 13 is arranged laterally outward of the machine body than the start end of the clamping rail 14 so that the receiving port 30 faces forward. By moving the machine body along the rice racks 31, the grain bundles hung on the rice racks 31 are sequentially supplied to the threshing device 4.

That is, the grain bundle present in the rice rack 31 enters the receiving port 30 due to the movement of the machine and the action of the pair of guide rods 32a, 32b, is held between the first chain 13 and the rail 14, and is transferred to the starting end side. It is pulled out from the rice rack 31 by the conveying action of the conveying device portion 8a. Then, in both the starting end side and intermediate conveying device parts 8a and 8b, the grains are held and conveyed in a downward hanging position, and in the terminal end side conveying device part 8c, the grain tip side on the conveying starting end side guides the grain culm to the supply port 4a of the threshing device 4. By climbing up on the bottom plate 28 and even after climbing up, the stock side is held and conveyed to above the starting end of the threshing feed chain 7 and is dropped to the feeding guide rod 29 to the threshing feed chain 7. The grain culm bundle is changed in posture to fall sideways and is supplied to the threshing feed chain 7.

Grain culm conveyance protrusion 13a of the first chain 13
are distributed at appropriate intervals, and the receiving and conveying of grain culm bundles by the starting end side conveying device portion 8a is carried out by the projections 1.
The threshing is performed at the arrangement pitch of 3a, and is intended to prevent an abnormal increase in the threshing load due to the supply of a large amount of grain culm bundles at one time.

As shown in FIG.
7, the intermediate conveying device portion 8b is configured to swing relative to the terminal end conveying device portion 8c around the vertical axis of the support shaft 26, and these conveying device portion swinging portions , a spring 33 that urges the starting end side transport device portion 8a to the set rocking limit on the rear side of the self-propelled aircraft, or an intermediate transport device portion 8
A spring 34 is provided to bias b to a preset rocking limit on the front side of the self-propelled aircraft. A detection switch 35 is provided at the connecting portion between the intermediate conveyance device section 8b and the end-side conveyance device section 8c so as to turn on and off in conjunction with the swinging of the intermediate conveyance device section 8b with respect to the end-side conveyance device section 8c. A switch 35 determines whether the force with which the receiving port 30 is pressed against the grain culm 31 for self-propelled body movement is less than a set value.
It is configured to be detected and extracted by. That is, when the swing angle θ of the intermediate conveying device portion 8b with respect to the terminal side conveying device portion 8c, which changes with the change in the pressing force of the receiving port 30 against the grain culm, is greater than the set value, the It is determined that the pressing force is below a set value. A clutch 3 is connected to the transmission system from the engine 36 to the traveling device 1.
7 is provided so as to be operable by an electromagnetic solenoid 38, and a control mechanism 39 for this solenoid 38 is provided.
are linked to the detection switch 35 so as to automatically operate based on this information. and,
The control mechanism 39 is set so that the electromagnetic solenoid 38 is operated so that the switch 35 is in a detection state in which the pressing force against the grain culm is below a set value, that is, the pressing force against the grain culm of the receiving port 30 is set. The clutch 37 is configured to automatically operate the clutch 37 so that the grain culm bundle density is equal to or less than the value, and the machine travel is automatically controlled so that grain culm bundles do not accumulate in the receiving port 30 regardless of changes in grain culm bundle parallel density in the rice rack 31. It is designed so that you can work while you are doing it.

That is, the grain culm bundles are densely arranged in the receiving port 30.
When the pressing force against the grain culm bundle exceeds a set value, the traveling of the machine is automatically stopped, and only the grain culm bundle at the receiving port 30 is accepted and transported by the transport device 8. Then, as this process progresses and the pressure force against the grain culm of the receiving port 30 is restored to below the set value, the machine automatically starts running, and the grain culm is taken in and supplied to the threshing device 4 while the machine is running. be.

[Another example]

Instead of the detection switch 35, a switch that detects the force of the receiving port 30 to push the grain culm based on the swing angle of the starting end side transfer device portion 8a with respect to the intermediate transfer device portion 8b may be adopted, or a switch may be used that acts on the receiving port 30. Either a pressure-sensitive sensor that directly detects the grain culm pressing force is adopted, or a pair of potentiometers that separately detect the swing angle of the starting end side conveyance device section and the intermediate conveyance device section are installed, and these meters are A configuration may be adopted in which the pressing force is determined based on the total value of the detection angles, and these are collectively referred to as a sensor 35 that detects the pressing force of the receiving port 30 against the grain culm.

Instead of the clutch 37, a traveling transmission may be provided in a state where it is automatically switched, and these are collectively referred to as the traveling speed adjustment mechanism 37.

[Brief explanation of drawings]

The drawings show an embodiment of the harvester according to the present invention, and FIG. 1 is a plan view of a grain culm conveying device, FIG. 2 is a rear view of the grain culm conveying device, FIG. 3 is a plan view of the entire harvester, and FIG. 4 is a plan view of the grain culm conveying device. is a side view of the entire harvester. 4... Threshing device, 8... Conveyance device, 30... Receiving port, 31... Rice rack, 35... Sensor, 37
...Traveling speed adjustment mechanism, 39...Control mechanism.

Claims (1)

[Scope of Claims] 1. A clamping and conveying device 8 for supplying grain culms is provided at the starting end of the threshing device 4 with the receiving port 30 facing forward on the lateral outside of the self-propelled machine, and A sensor 35 is provided to detect the pressing force of the receiving port 30, and the traveling speed adjustment mechanism 37 of the self-propelled aircraft is automatically operated based on information from the sensor 35 so that the pressing force is below a set value. A harvester provided with a control mechanism 39. 2. The harvester according to claim 1, wherein the traveling speed adjustment mechanism 37 is a traveling clutch.