JPS60259120A - Grain straw conveyor of reamer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a culm conveying device for conveying cut culm in a reaper.

During reaping work with a reaper, as the machine advances, the culms to be planted in the field are raked out one by one by the weeding body at the front end of the machine, and then pulled up by a pulling device, and the root part is pulled up by a raking belt. It is guided to the cutting position by the cutting blade and cut by the cutting blade. The cut culm is released from the device by pulling up the tip portion, and at the same time, the root portion is scraped into the conveyance path by a scraper, and is captured by the culm conveyance device and conveyed.

The scraping body in such a reaper is a tooth-shaped or rod-shaped rotary body that captures the culm and scrapes it in the rotational direction, so there is a possibility that the rotary body may catch the culm and wrap it around. In the case where a sensor contact is provided near this scraping part, not only the detection operation may become unstable because the culm is not guided to the contact correctly, but also the culm may become wrapped. There were times when the shell culm broke and was lost.

``This is a similar drawback even in the case where the conveyance device is divided into a front stage section and a rear stage section, and the contactor is provided at the rear stage section.

The present invention has been made in view of the above points, and is achieved by providing a winding prevention body whose tip portion faces the vicinity of the sensor contactor so as to extend along the culm scraping path. The present invention provides a shell culm conveying device for a reaper that stabilizes the detection operation by a sensor contactor and prevents the occurrence of shell culm loss.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 4 show an embodiment of the culm conveying device according to the present invention. 3 is an enlarged plan view of the front part of the culm conveying device, and FIG. 4 is an enlarged plan view of the vicinity of the sensor contactor for adjusting the handling depth and a side view of the same from a human perspective. In the figure, a frame 4 of a threshing machine 3 housing a handling cylinder for threshing and a sorting device is mounted on a running frame 2 that supports rollers 1 running on the left and right sides of the combine. An endless conveyor belt 5 for conveying husks for threshing is stretched over the conveyor belt.

Reference numeral 6 denotes a clamping rod having a U-shaped cross section and clamping the base of the threshing shell culm between it and the endless conveying belt 5.

A reaping drive shaft 10 , which is drivingly connected to the driving side by a pulley 9 , is rotatably supported by a reaping bearing 8 on a main gear box T supported at the front end of the traveling frame 2 . Reference numeral 11 denotes a tubular reaping frame that supports the main part of the reaper, and is generally designated by the reference numeral 12. The upper end of the frame is rotatably supported on the reaping bearing 8 and extends obliquely upward. A transmission shaft which is drivingly connected to the reaping drive shaft 10 is supported through the shaft. The lower end of this reaping frame 11 and the traveling frame 2
The reaper 1 is connected to the reaper 1 by a hydraulic cylinder (not shown).
2 is raised and lowered to adjust the cutting height. Further, in a reaping gear box 13 that is joined perpendicularly to the reaping frame 10, a lifting drive shaft 14, which is drivingly connected to a transmission shaft within the reaping frame 11, is supported through the reaping gear box 13. Reference numeral 15 denotes a pre-reaping frame supported by and parallel to both ends of the reaping gear box 13, from which a plurality of dividing rods 16 are extended forward, and the front end of each dividing rod 16 is In the part, there is a cutting plant 1 that scrapes the culms in the field.
1 is fixed respectively. Reference numeral 18 denotes a lifting device that is supported by a lifting vibe 19 that extends obliquely upward from the reaping gear box 13 and that raises the fallen culm. This is a cutting blade that cuts off the base of the erected culm.

A raking belt 22 made of synthetic rubber or the like extends toward the weeding body 1T at the upper end of each raking shaft supported by a plurality of raking bearings 21 that protrude obliquely upward from the rear of the cutting blade 20. A plurality of lugs 22 are integrally formed and protruded from the provided scraping belt 22 during molding. Further, on each scraping shaft, there are rotary scraping bodies 23A, 23B, 2 formed in a gear shape and rotating in the direction shown by the arrow in the figure.
3C are provided, respectively, and are configured to rake the culm cut by the cutting blade 20 into the conveyance path.

The culm conveying device that conveys the husk scraped by the rotary raking bodies 22A, 22B, and 22C toward the threshing machine 3 is composed of a conveying device (front) 24 and a conveying device (rear) 25. Of these, the conveying device (front) 24 includes a tip conveying device (front) 26, a tip conveying device (front) 27, which are arranged in the shape of a square, and a root conveying device (front) arranged in the shape of a square below them. It is composed of a conveying device (front) 28 and a root conveying device (front) 29.

Each tip conveyor (front) 26, 27 includes a tip chain having a plurality of lugs 30 arranged in parallel at regular intervals and running in the direction shown by an arrow in the figure in a chain case 31, and a tip chain having a plurality of lugs 30 arranged in parallel at regular intervals.
For example, in the case of three-row cutting, the tip conveying device (front) 26 is equipped with a tip guide (not shown) that is supported along the tip traveling trajectory of the tip, and the tip conveying device (front) 27 is equipped with a tip guide (not shown). is configured to hold and convey two culms using lugs 30 and tip guides, respectively. Further, the root conveying device (front) 28, 29 includes a root chain 33 stretched between a plurality of rotating bodies 32, and a clamping rod (not shown) supported along the running end of the root chain 33. In the case of 3-row mowing, the root conveying device (front) 28 is the same as the 1-row root conveying device (front).
29 is configured to transport two culms while being held between a base chain 33 and a clamping rod. Reference numeral 27m denotes a rotary scraping body pivotally attached to the conveying end portion of the ear tip conveying device (front) 27.

34 is a contact for a culm presence sensor shown as an example of a sensor, and is pivoted to a sensor box 35 fixed to the lower surface of the chain case 31 and located at the conveyance start end of the ear tip conveyance device (front) 27. The lug 300 is configured to be rotatable within a plane parallel to the running plane. The sensor box 35 is connected to a separately provided sensor for adjusting the handling depth, etc., and the rotating scraping bodies 23B, 2
When the shell culm scraped by 3C comes into contact with the contactor 34, this detects the presence of the shell culm and rotates to fall down, making the sensor for adjusting the handling difficulty etc. in a detectable state. It is configured. Further, on the case 22b of the scraping belt 22 corresponding to the right-side rotary scraping body 23C, a wrapping prevention body 36 is provided to close the base end of the tip conveying device (front cloth) 2T. Fixed. The winding prevention body 36 is made of a bar-shaped spring material and is formed into an arc shape, and its tip end is connected to the contactor 3.
4) is elastically pressed against the scraping culm to prevent the culm from winding around the rotating scraping body 23C and guide it correctly to the contact 34. has been done.

Next, the conveying device (rear) 25 which also serves as a handling depth adjusting device will be explained. The transmission case 3T provided integrally with the reaping bearing 8 includes a gear box 38 extending in the machine width direction.
are rotatably joined to each other, and a transmission device is housed therein, which transmits the rotation of the reaping drive shaft 10 to the transport device (rear) 25. A case 40 of the ear tip conveying device (rear) 39 is fixedly supported on the free end side of the gear box 38 and extends diagonally downward. A tip chain that is driven and runs from the transmission side in the box 38 is stretched. Further, a rod-shaped tip guide (not shown) is supported outside the case 40 so as to be immersed in the trajectory of the tip of the lug 41 . What is designated as a whole by reference numeral 42 is the root conveying device (rear), which is supported at its center by a main pipe 43 that projects from the gearbox 38 in a direction perpendicular to the case 4.
0 and tl are provided with a chain frame 44 extending in parallel, and one end of this chain frame 44 is supported at its upper end by a support rod 45 fixed to the gearbox 38. A base chain 46 is stretched between the rotating bodies pivotally attached to both ends of the chain frame 44.
Its terminal end is located near the starting end of the endless band 5. 47 is a U-shaped rod formed of pipe material and fixed to the main pipe 43, and a bracket 48
supports the central part of the case 40 via the
A spring holder 49 is fixed to the other end, and a rod-shaped clamping rod 50 supported by the spring holder 49 is attached to the spring holder 49.
It is pressed against the running end of the root chain 46 by a pinching spring inside. The two conveying devices (rear) 311, 42 convey the husk taken over from the conveying device (front) 24 toward the threshing machine 3, and have a handling depth adjustment function as described below.

That is, an operation box 51 disposed at the rear side of the reaper 12 is equipped with a starter 52 that can be operated from the rear cockpit), and the reaping bearing 8 is equipped with a lever 52 at both ends. A shaft 55 to which a lever 53 and a rotating arm 54 are fixed is rotatably supported. The free end of the lever 53 is connected to the motor 52 by the rod 5, and the free end of the rotating arm 54 is connected to the tip of a roller arm 56 fixed to the U-shaped rod 43. The roller 57 is connected to the conveyor device (rear) 2
5 are pressed together by their own weight. and motor 5
When the motor 2 is rotated in the forward direction, the entire transport device (rear) 25 rotates around the pivot support provided by the transmission case 3T in a direction in which the transport start end rises, and by rotating the motor 52 in the reverse direction, the transport The entire apparatus (rear) 25 is configured to rotate in the direction of lowering the transport start end by its own weight. As the transport starting end of the transport device (rear) 25 moves up and down in this way, the position at which the culm is captured by the transport device (rear) 25 when it is taken over from the transport device (front) 24 rises and falls, and the culm is transported as it is. By supplying the grain to the threshing machine 3, the position of the ear tip relative to the handling barrel changes and the handling depth is adjusted. Although the rotation of the motor 52 can be operated manually, this apparatus is provided with an automatic handling depth adjustment device using a sensor as shown in FIG. That is, a sensor box 58 is provided above the starting end of the transport path of the (rear) ear transport device 39 and is supported by the case 40, and the sensor box 58 has a pair of contacts 59.6.
0 are rotatably mounted parallel to each other. Contact 5
9.60 is a spring member that is biased counterclockwise in FIG. 4, and its rotation limit is restricted at the solid line position in the same figure. The sensor box 58 is mounted so as to be tilted away from the sensor box 58. As shown in FIG. 4(b), when the height of the tip of the shell culm 61 is between the contacts 59 and 60, the motor 52 is stopped and the height of the tip of the shell culm 61 is at the upper level. If the height is higher than the contactor 59, the motor 52 rotates in the forward direction so that the handling depth becomes shallower as described above. In addition, the height of the tip of the shell culm 61 is lower than that of the contact 6.
If the depth is lower than 0, the motor 52 will rotate in the opposite direction and the handling depth will become shallower. In this embodiment, the sensor box 35 and the contact 34 for detecting the presence or absence of a culm are used for adjusting the handling depth, and only when this detection device detects the presence of a culm, the sensor box 35 and the contact 34 shown in FIG. The detection device shown in FIG. 1 is configured to perform a detection operation.

The operation of the combine harvester configured as described above will be explained by taking three-row cutting as an example. As the machine moves forward, the three culms that have been raked by the weeding body 1T are guided one by one between the adjacent weeding rods 16, and after being raised by the pulling device 19,
The root portion is conveyed by a scraping belt 22 and cut by a cutting blade 20. The harvested culms are released from the device 19 by pulling up the tip, and at the same time are scraped into the conveyance path by the rotating scrapers 23A to 23C, and one of the three strips is removed from the carry-out device (front pressure) 2.
The 6°28.2 strips are captured and transported by the transport device (previously) 27.29, respectively. The three conveyed culms meet at the end of conveyance, and the tip and root sections are transferred to a tip conveyor (
(rear) 39 and root conveyance device (rear) 42, respectively. The tip of the inherited culm is held by the lug 41 and the tip guide and is conveyed while passing through the U-shaped rod 4T.
Further, the root portion is conveyed while being held between the endless belt 46 and the clamping rods 50.

At the end of the conveyance, the tip portion of the husk is supplied to the handling chamber of the thresher 3, and the root portion is taken over by the endless belt 5 and threshed while being conveyed.

In such harvesting work, by rotating the motor 52 from the operator's seat in accordance with the length of the grain culm in the field, the tip of the ear tip of the husk culm 61 passes between the contacts 59 and 60. adjusted to. Therefore, motor 52 is stopped. Also, when reaping is started, the culm 61 is removed by the rotary raking body 2.
When scraped by 3A to 23C, two of them contact the contact 34 and rotate it, so a signal is emitted from the senna box 35 and the detection device for adjusting the handling depth is ready for operation. become. In this case, by providing the wrapping prevention body 36, the elasticity of the wrapping prevention body 36 presses against the two shell culms scraped by the rotating scraping bodies 33B and 330, The culm is rotary scraping body 33B, 33C
It is correctly guided to the contactor 34 without getting wrapped around it.

During the harvesting operation, for example, if the length of the shell culm becomes longer than before, the tip of the tip of the shell culm 61 becomes higher than the upper contact 59 and comes into contact with it. Therefore, the contact 59 falls down against the elastic force of the spring member, and the solid contacts 59 and 60 fall together, causing the motor 52 to rotate forward. In FIG. 4(a), the chain line 60A and the chain line So
The rotational position of the motor 52 is between 1 and 1. motor 52,
As a result of the rotation, the rotating arm 54 pushes up the roller 5T, and the entire conveyance device 25 is rotated in the direction in which the conveyance starting end portion rises. Therefore, the culm capturing position of the conveying device (rear) 25 at the time of taking over from the conveying device (front) 24 is not high, and the tip of the tip of the culm 61 that is subsequently captured is fixed as before the culm length is changed. As soon as the motor 52 passes between the contacts 5, 9 and 60, the motor 52 stops. Even if the grain culm length changes, the dimension from the grasping position by the root conveyor (rear) 42 to the tip of the grain does not change, so there is no need for deep handling, and the handling depth is automatically adjusted for threshing. The tips of time are well aligned. When the culm 61 changes from a long culm to a short culm,
Since the position of the tip of the shell culm 61 is also lower than that of the lower sensor 60, the motor 52 rotates in the opposite direction, and the catching position of the shell culm 61 becomes lower. Therefore, even if the grain culm length becomes short, the grain will not be treated shallowly. When the culm does not exist in the conveyance path, the same condition as in the case of a short culm in which the culm does not come into contact with the solid contacts ss and so occurs, but in this case, the contact 34 of the culm presence sensor Since the culm is not detected and the handling depth sensor is not in operation, the motor 52 does not rotate. Further, in this embodiment, the axis of the sensor box 58 is tilted so that as the contact 59°BO rotates, it moves away from the tip conveying device (rear) 39, so that the sensing of the contact 59, 60 is The angle, that is, the angle θ- formed by the contacts 60A and 60B in FIG. 4(a) becomes smaller when the contacts 59. The sensing time of 60 is short, the time lag is reduced, and the tips of the ears are aligned well. Moreover, even if the conveyance path of the tip portion is made wider and the contacts 59 and 60 are made longer than in the conventional case, reliable sensing can be achieved.

Furthermore, in this embodiment, an example was shown in which the anti-wrapping body 36 was provided on the transport upstream side of the transport device (front) 24;
Conveyance device (front) 24 which is a conveyance scraping part for the rear) 25
It may be provided at the end of the conveyance. In other words, for example, by pivotally attaching a winding preventive body to the conveying end portion of the ear tip conveying device (older model) 27 in this embodiment, and making the tip portion face the vicinity of the contacts 59 and 60, The culm may be prevented from wrapping around the tip conveying device (older model) 27 or the rotary scraper 271, and the culm may be correctly guided to the contacts 59, 60.

As is clear from the above description, according to the present invention, the winding prevention body 36 whose tip portion faces the vicinity of the sensor contact is provided so as to extend along the culm scraping path, and the culm Since the shell culm is configured to lead to the contact, the shell culm does not wrap around the scraper, so if the shell culm breaks or the grain falls off, there will be no loss of grain. As it decreases, the culm is reliably guided to the sensor contact, which stabilizes the detection operation.

[Brief explanation of drawings]

1 to 4 show an embodiment of the culm conveying device for a reaper according to the present invention, and FIG. 1 is a side view of a part of the threshing machine/traveling section of a combine harvester and a reaper in which this is implemented. , Fig. 2 is a plan view of the reaper, Fig. 3 is an enlarged plan view of the front section of the culm conveying device, and Fig. 4 is an enlarged plan view of the vicinity of the sensor contact for adjusting the handling depth and its human side view. It is. 12...reaper, 22...raking belt, 23A
, 23B, 230, 27a...fist/rotating scraper, 24...conveying device (front), 25...conveying device (rear), 2T...tip conveying device (previously old), 34゜59.60... Contactor, 36-Φ... Winding prevention body, 39... Tip conveying device (rear). Patent applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Masaki Yamakawa (TL or 2 people) Figure 2 Figure 3

Claims (1)

[Claims] Between the shell culm scraping body and the sensor contactor in the shell culm conveyance path,
1. A culm conveying device for a reaper, characterized in that a winding prevention body made of a spring material and extending along a culm scraping path is provided with its tip facing near the sensor contactor.