JPH0137385Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a raking device for conveying the root portion of a grain culm to a reaping position in a raking machine, and raking it into a conveying path after reaping.

In reaping work with a combine harvester,
As the machine advances, the grain culms in the field are raked by the grass cutting body at the front end, and the tip of the grain is lifted up and conveyed by a lifting device to stand up. It is transported to the reaping position in an endless belt. Then, at the same time as the root part is cut by the cutting blade, the tip part is lifted up and released from the device, and the cut grain culm is raked to the center of the cutting blade by a pair of left and right rotating raking bodies, and then transported and sent to the passage. It is scraped and transported to the threshing machine by a transport device.

In a reaper that operates in this way, the left and right endless raking bands are arranged in a V-shape so as to expand toward the front, which is the direction of movement of the machine base, and the rotating raking body has an endless raking band. It is arranged concentrically with the rear rotation axis of the band. The root parts of the 2 to 3 rows of grain culms are then transported along a V-shaped transport path by lugs arranged at regular intervals on the endless raking belt, and are transported to the point where the left and right lugs meet at the intersection point. The left and right rotating raking bodies rotate in opposite directions to take over and rak the merged grain culm, but in conventional raking devices, a dead space is created at this transition part, and the root of the grain culm is rotated with the lug. In particular, when cutting in three rows, the central grain culm does not come into contact with the lug until it reaches the rotary raking body, so the tip of the grain is not retained at this time. When the grain culm is released from the lifting device, the grain culm may fall down without being held by anything, resulting in loss.Also, even if it does not fall down, the alignment of the grain culm may be disrupted, resulting in raking and subsequent damage. There was a problem that transportation was not carried out smoothly. This often occurred in the case of short culms, where the tip of the stalk is released early.

The present invention was developed in view of the above points, and the outer two grain culms of the three grain culms are conveyed by the left and right endless raking belts, guided to the rotating raking body, and then transported to the central raking body. In a three-row reaper in which the grain culm path between the endless raking bands is directed toward the rotating raking body, the lugs of the left and right endless raking bands are arranged so as to be substantially orthogonal to the endless band. By configuring the left and right lugs so that they protrude for a long time, and by configuring the intersection position of the tip running trajectories of the left and right lugs to be in front of the intersection position of the tip circumferential trajectories of the left and right rotating raking bodies, it is possible to To provide a raking device for a reaper that prevents lodging of grain culms and facilitates transportation by quickly and reliably holding the root part of the grain culm, especially the central part of the grain culm that is not forcibly conveyed by a lug. . Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2 show an embodiment of the raking device according to the present invention. The figure is a plan view of the reaper, with the grain culm conveyance device removed. In the figure, a threshing machine, which is designated as a whole by reference numeral 2, is mounted on the running frame that connects the left and right running crawlers 1, and the front end of the threshing machine 2 has a transmission shaft connected to the driving side internally. A reaping frame 3 is pivotally supported through the reaping frame 3 so as to be swingable. This reaping frame 3 supports a reaping machine, which is indicated by reference numeral 4 as a whole, and its lower end and the traveling frame are connected by a hydraulic cylinder 5, and an operating device 7 can be operated from a pilot's seat 6. By operating a lever and operating a hydraulic cylinder 5, the reaping frame 3 is swung, and the height of the reaping by the reaper 4 is adjusted. A pre-reaping frame 10 parallel to the reaping gear box 8 is attached to the lower end of the dividing rod stay 9 that projects diagonally downward from both ends of the reaping gear box 8 which is integrally formed with the reaping frame 3 in a T-shape. 4, which extends forward along the ground from now on.
The dividing rods 11a, 11b, 11c, and 11d are integrally formed and supported. In addition, among the grass dividing rods 11a to 11d, the grass dividing rod 11 on one side of the central part
c is directly supported by the reaping gear box 8 by the drive pipe 12 without intervening the pre-reaping frame 10. Four weeding bodies 13a, 13b, 13c, and 13d are fixed to the front end of each of the weeding rods 11a to 11d, and are used to scrape the grain culms in the field as the machine moves forward. At the rear of the section and the middle part of the grass cutting bodies 13c and 13d,
The main pulling devices 14 and 15 are erected with their lower ends supported by the dividing rods 11a and 11d and tilted slightly rearward. The lifting cases 14a and 15a of the main lifting devices 14 and 15 are supported by a lifting pipe 16 extending obliquely upward from the reaping gear box 8, and a large number of lugs 17 are installed inside the lifting cases 14a and 15a. Lifting chains 18 provided at regular intervals are stretched. The rotation of the drive side is transmitted to the hoisting chain 18 via the reaping frame 3, the reaping gear box 8, and the transmission shaft in the hoisting pipe 16, causing the hoisting chain 18 to travel.
7 stands up at the lower ends of the lifting cases 14a, 15a, and is configured to rise inside the lifting cases 14a, 15a as the lifting chain 18 travels. The one indicated by the reference numeral 19 is located at an intermediate portion between the left and right main pulling devices 14 and 15, and has a transmission pipe 21 extending obliquely upward from a gear box 20 at the intersection of the drive pipe 12 and the dividing rod 11c. A lifting case 1 which is a supported auxiliary lifting device and is shorter and smaller than the main lifting devices 14 and 15.
9a, and a lifting chain 23 having a large number of lugs 22 at regular intervals is stretched in the lifting case 19a. The rotation of the driving side is caused by the reaping frame 3, the reaping gear box 8,
The lifting force is transmitted to the chain 23 through the drive pipe 12 and the transmission shaft in the transmission pipe 21 to cause it to run, and the lug 22 lifts up and stands up at the lower end of the case 19a and is raised as the chain 23 runs. It is configured such that the device 14 side is raised. By configuring in this way, the branch 1
The two-row grain culm guided between 3a and 13b and between 13b and 13c is raised by the main pulling device 14 and the auxiliary pulling device 19, and the one-row grain culm guided between the cutting bodies 13c and 13d. is raised by the main raising device 15. Further, near the pre-reaping frame 10, a clipper-shaped cutting blade 24 is installed parallel to the pre-reaping frame 10 and supported by the dividing rods 11a to 11d.
It is driven from the cutting blade drive device 25 side.

A scraping bearing 26 is provided in the center of the drive pipe 12.
is integrally formed and protrudes obliquely upward, and this scraper shaft 27, which is drivingly connected to the transmission shaft in the drive pipe 12, is connected to the weeding rod 11.
It is pivotally supported coaxially with c. In addition, a raking bearing 26 is placed concentrically with the other branching rod 11b in the center.
Concentrically with respect to the width direction of the machine, there is another scraper bearing 2.
8 is integrally formed with the pre-reaping frame 10, and this raking bearing 28 has a raking shaft 2.
9 is pivoted. Reference numerals 30 and 31 refer to a pair of left and right rotary scraping bodies formed in the shape of gears, which are pivotally attached to left and right scraping shafts 27 and 29, respectively, so that their teeth mesh with each other. The rotary scraping body 31 is configured to be driven and rotated by meshing with the other rotary scraping body 30 that is driven together with the scraping shaft 27. Chain lines S ₁ and S ₂ indicate the orbits of the tip ends of the rotary scraping bodies 30 and 31, respectively, and point P ₁ indicates the intersection of chain lines S ₁ and S ₂ .
Reference numerals 32 and 33 indicate a pair of left and right endless scraping bands that are arranged in a V-shape so as to expand toward the front, and are integrally formed with the rotary scraping bodies 30 and 31. Concentric pulley 34 and scraping shaft 2
It is equipped with an oval-shaped endless belt case 35 whose one end is supported at the tips of 7 and 29, and the endless belt case 35
The other end is supported by the dividing rods 11a and 11d. A rubber endless band 3 is disposed between the pulley supported at the front end of the endless band case 35 and the pulley 34.
7, 38 are stretched, and each endless band 37, 38
, a plurality of lugs 39, 40 are connected to endless bands 37, 3.
It is integrally formed with 8 and protrudes during molding. In Fig. 2, the dashed lines S ₃ and S ₄ indicate lag 3, respectively.
9,40 is the tip running trajectory, and P ₂ is the chain line
The intersection of S ₃ and S ₄ , and the point at this intersection
The lugs 39 and 40 are formed to be long and approximately opposite to the endless bands 37 and 38 so that P ₂ is located forward of the point P ₁ that is the intersection position of the tip orbits of the rotary scraping bodies 30 and 31. They are protruded orthogonally.
Further, between the sprocket on the raking shaft 27 on one side and the sprocket 41 supported by the reaping gear box 8, a conveying chain 42 for conveying the roots of the reaped grain culms is stretched. 43 is the raising case 1
A tip guide 44 that guides the tip of the grain culm supported by 4a, 15a, and 19a and transported to the reaping position.
is a root guide that is supported by the dividing rods 11b and 11c and conveys the root portion of the same grain culm.

On the other hand, a support rod (not shown) protruding from a bearing portion that pivotally supports the reaping frame 3 is provided with a tip conveying device 47 consisting of a tip chain 45 and a tip guide 46 supported along the tip travel locus of the lug.
and a root conveying device 50 consisting of a root chain 48 and a clamping rod 49 supported along its running end.
are supported vertically in parallel.

The operation of the combine constructed as described above will be explained. As the machine moves forward, the three rows of grain culms to be planted in the field are separated by the four sowing bodies 13a to 13d and guided one by one between adjacent sowing bodies.
Therefore, the lug 1 of each lifting device 14, 15, 19
7, 22 are raised cases 14a, 15a, 19a
Since the grain culms are rotated while standing up at the lower end thereof, the tips of the grain culms are scooped up by the lugs 17 and 22 and are lifted up and conveyed. In this case, two of the three grain culms are pulled up by the lifting devices 14 and 19,
One grain culm is pulled up by a pulling device 15. At the same time as the tip of the grain is raised, the machine advances while aligning the roots of the two outer grain culms with the root guide 44, so that these are moved by the lugs 39 and 40 of the left and right endless bands 37 and 38, respectively. It is captured and conveyed along the root guide 44. Moreover, the root part of the central grain culm runs straight between the dividing rods 11b and 11c.
As the machine advances further, the left and right lugs 39, 40 begin to intersect at point _P2 , and the central grain culm, which had not been in contact with the lugs 39, 40, is moved at an early stage before raking. Lug 39,
The grain culms on the outside are harvested by the cutting blade 24 while being caught by the cutting blade 40, and then released from the root guide 44 and raked by the intersecting lugs 39 and 40 to join together. The three rows of harvested grain culms captured by lags 39 and 40 arrive at point P ₁ a moment later than this.
The rotary scraping bodies 30, 31 and the lug 3 begin to intersect at
9 and 40, it is scraped rearward between the rotary scraping bodies 30 and 31. At this time, the tip part is also pulled up by the device 14,
Since the grain culm is released from the lugs 17 and 22 of 15 and 19, the root portion of the grain culm is conveyed by the conveyance chain 42, and both the tip and root conveying devices 47 and 50
The grains are captured by the threshing machine 2 and transported to the threshing machine 2 where they are threshed.

As is clear from the above explanation, according to the present invention, the outer two grain culms of the three grain culms are conveyed by the left and right endless raking belts and guided to the rotary raking body, and the grain culms in the center In a three-row reaper in which the grain culm path between the endless raking bands is directed toward the rotating raking body, the lugs 3 of the left and right endless raking bands 32 and 33
The left and right lugs 39, 40 are formed to protrude substantially perpendicularly to the endless bands 37, 38.
By configuring the intersection position of the tip running trajectories of the left and right rotary scraping bodies to be in front of the intersection position of the tip circumferential trajectories of the left and right rotary scraping bodies, the root part is scraped into the endless band 3.
The outer grain culm transported by 2, 33 is transported by lug 39, 4
The cutting blade 24 is merged and held by the raking of 0.
The central grain culm that is reaped by the cutting rods 11b and 11c and moves without contacting the lugs 39 and 40 is caught by the lugs 39 and 40 very early at the intersection position _P2 of the lugs 39 and 40. After being cut by the cutting blade 24, these three grain culms are subsequently scraped by the rotary raking bodies 30 and 31, so that even if the tip of the harvested grain culm is released, the root part is securely removed. Because it is held in place, it does not fall to the ground or tilt forward, which prevents loss due to falling, and the grain culms are raked and transported in an orderly manner, making subsequent transport extremely smooth. This can reduce grain shedding and ear breakage.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the raking device for a reaper according to the present invention, and FIG. 1 is a side view of the entire reaper, threshing machine, and part of the running section of a combine harvester in which this is implemented. , FIG. 2 is a plan view of the reaper with the grain culm conveying device removed. 4...reaper, 27, 29...raking shaft, 30,
31... Rotating scraping body, 32, 33... Endless scraping band, 37, 38... Endless band, 39, 40... Lug, P ₁ ... Tip circular locus intersection position of rotating scraping body,
P ₂ ...Lug tip travel locus intersection position.

Claims (1)

[Scope of utility model registration request] A dividing body fixed to the front end of each of the four dividing rods so as to guide the three grain culms one by one to the grain culm passage between adjacent dividing rods, and a starting end to each of the outside grain culm passages. A pair of left and right endless scraping bands are arranged in a V-shape so as to expand toward the front, which is the direction of movement of the facing machine, and a pair of endless scraping bands are arranged concentrically with the rear rotation axis of the endless scraping bands. In a three-row reaper equipped with a pair of left and right rotary raking bodies, the lugs of the left and right endless raking bands are arranged such that the intersection position of their respective tip running trajectories is at the tip of the left and right rotary raking bodies. A raking device for a reaper, characterized in that a long protrusion is formed substantially perpendicular to the endless band so as to be in front of the intersection position of the circular locus.