JPS6443Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes, for example, a grain header having a reel for raking in uncut grain culms, a cutting blade, etc., a supply chamber having a reaped grain culm supply belt installed therein and connected to the header; The present invention relates to a combine harvester comprising a threshing section that has a handling barrel and a grain sorting mechanism and is connected to the supply chamber, and that continuously inputs harvested grain culms into the handling chamber of the threshing section to thresh the grain, and the combine harvester has a machine body. A structure comprising a separator cylinder for threshing perpendicular to the direction of movement of the grain, wherein the cylinder is formed into a polygonal shape, and a spike tooth bar installed on the outside of the cylinder is provided so that the installation position can be changed,
By providing the spike teeth attached to the tooth bar so that the protrusion length can be adjusted, the receding angle of the spike teeth can be changed, thereby increasing adaptability to the processing object, and the protrusion length of the spike teeth can be adjusted. Therefore, this effective diameter can be changed, and the gap with the concave or the effective space volume between the outside of the flange and the tip of the spike tooth can be easily changed without requiring vertical adjustment of the concave. The objective is to provide a threshing device for a combine harvester that is practically convenient, since it is an assembly type, so that it is easy to differentiate the elasticity and rigidity of each component, and it is easy to prevent damage to spike teeth and the like provided at impact points.

An embodiment of the present invention will be described in detail below with reference to the drawings. Fig. 1 is a side view of the whole, and Fig. 2 is a plan view of the same, in which 1 is a machine base equipped with a front drive wheel 2 and a rear steering wheel 3, and 4 is a threshing mechanism 5 and a grain sorting mechanism. A threshing section 7 mounted on the machine stand 1 is equipped with a grain tank 9 that stores grains from the threshing section 4 to be taken out via a lifting cylinder 8; The reaping section 11, which is installed to be able to be raised and lowered, is a driver's cab that is provided with a driver's seat 12 and a steering handle 13, and is fixedly installed in front of the upper part of the threshing section 4.

The reaping section 9 is composed of a grain header 14 for receiving uncut grain culms, and a supply chamber 15 connected to the rear center of the header 14 for feeding the reaped grain culms to the threshing section 4. , the grain header 14 is equipped with an uncut grain culm raking reel 16, a reciprocating cutting blade 17, and a grain culm raking auger 18, and a reaped grain culm supply belt 19 is installed in the supply chamber 15; The structure is such that the cut grain culm fed from the center of the grain header 14 is fed to the threshing section 4 by the belt 19.

As shown in FIG. 3, the threshing processing mechanism 5 is installed inside the handling room 20, and is used for threshing processing in which a plurality of handling barrel shafts 21, 22, 23 are horizontally suspended in the front and back, perpendicular to the direction of movement of the machine. Separator cylinders 25 and 26, which are the first handling cylinder 24 and the second and third handling cylinders,
First and second beaters 29, 30 for threshing are horizontally suspended at the upper center of each of these handling drums 24, 25, 26 via beater shafts 27, 28, respectively, and the above-mentioned handling drums 24, 25, 26 The first to third concave 31, 32, 33 respectively disposed on the lower peripheral side of the
and a beater grate 34 provided at the bottom of each of the beaters 29, 30 and interposed between the feed end and start end of the front and rear concave 31, 32, 33,
35, and the first and second handling cylinders 24, 25
and the first beater 29 and the second and third handling cylinders 25,
26 and the second beater 30 form continuous triangles A and B when viewed from the side.

In addition, a swing sorting board 38 is horizontally suspended above the first and second conveyors 36 and 37 and swings back and forth.
and a Karasaki fan 39 that feeds sorting air to the sorting board 38 constitute the swinging sorting mechanism 6.
Prepare for.

Further, the grain tank 7 is provided with a lateral discharge auger 43 at the bottom for taking out the grains to the outside, and an engine chamber 4 in which an engine 44, an oil tank 45 for a hydraulic system, etc. are installed at the rear of the tank 7.
6 are installed in succession.

As shown in FIGS. 4 and 5, the engine 4
4 output shaft 47 to the first beater shaft 27
8, 49 and a belt 50, and pulleys 51, 52, 5 are connected to the beater shaft 27.
The second and third handling drum shafts 22 and 23 and the second beater shaft 28 are interlocked and connected via the belt 3 and 54 and a single belt 55. Further, the first handling cylinder shaft 21 is interlocked and connected to the first beater shaft 27 via continuously variable speed pulleys 56, 57 and a belt 58, so that the rotation speed of the first handling cylinder can be changed. There is. Further, the second handling cylinder shaft 22 is interlocked and connected to a counter shaft 59 provided approximately in the middle between the second handling cylinder 25 and the winnowing fan 39 via pulleys 60, 61 and a belt 62, and the second handling drum shaft 22 is connected to the countershaft 59 provided approximately in the middle of the second handling cylinder 25 and the winnowing fan 39, and the second handling drum shaft 22 is connected to the countershaft 59 provided approximately midway between the second handling drum 25 and the winnowing fan 39. The counter shaft 59 is interlocked and connected via speed change pulleys 64, 65 and a belt 66. And drive systems 56, 57, 58, 64, 65 with continuously variable speed,
66 is disposed outside the threshing right side plate 67a, and the other drive systems 49, 50, 51, 52,
53, 54, 55, 60, 61, and 62 are arranged on the outside of the threshing left side plate 67b on which the worker gets on and off.

As shown in FIGS. 6 and 7, the second and third handling cylinders 25 and 26 are formed into an equilateral hexagonal polygon, with flanges 68 and 6 on both left and right sides of the equilateral hexagon.
A spike tooth bar 6 shaped between one end of each side of 8
9 are hung horizontally, and round bar-shaped spike teeth 70 are planted on each tooth bar 69 at equal intervals. The tooth 70 has its mounting portion connected to the screw 7.
0a, and a nut 71 is attached to the tooth bar 69.
The effective diameter R of these handling cylinders 25 and 26 can be variably adjusted by supporting the cylinders 25 and 26 so that their protruding lengths can be freely adjusted. Further, a plurality of mounting holes 72 for the tooth bar 69 are provided on each side of the flange 68, and by appropriately changing the mounting position of the tooth bar 69, the sweepback angle θ of the spike tooth 70 can be variably adjusted. It is configured to obtain.

The present embodiment is constructed as described above, and uncut grain culms are introduced into the grain header 14 via the reel 16, and the root of the uncut grain culms is cut by the cutting blade 17.
At the same time, the reaped grain culm is fed from the center of the header 14 to the supply chamber 15 via the culm scraping auger 18, and the reaped grain culm is transferred to the threshing section 4 by the reaped grain culm supply belt 19. The grains are fed to the grain handling chamber 20 and sequentially threshed by each handling cylinder 24, 25, 26, and the shattered grains are sorted while the chaff sieve 41 and grain sieve 42 are falling, and only the grains are sent to the grain tank 7. It is to be taken out.

During this operation, the grain culms fed into the second and third handling cylinders 25 and 26 are accelerated by the rotational centrifugal action of these spike teeth 70, and their discharge direction is appropriately changed by forming a receding angle θ. The grains are discharged to the rear of the lever, and during this process, the grains are shed between the spike tooth 70 and the corn caves 32, 33, and the grains are separated and leaked from the corn caves 32, 33. If the amount of grain culms fed increases or decreases, or if the culm length of the reaped grain culms becomes shorter and the throughput changes, the protruding length of the spike tooth 70 is adjusted. The clearance between the concave 32 and 33 is made large or small, and the threshing process is performed with an appropriate clearance depending on the throughput. In addition, the tooth bar 6
By changing the mounting position of 9, the sweep angle θ can be adjusted.
It is possible to change the ejection direction depending on the object to be treated, or to reduce the impact that the spike tooth 70 receives.

As is clear from the above embodiments, the present invention has a structure including separator cylinders 25, 26 for threshing perpendicular to the direction of movement of the machine, in which the cylinders 25, 26 are formed in a polygonal shape, and the cylinders 25, 26 are formed in a polygonal shape. 26 Since the spike tooth bar 69 installed on the outside is provided so that the installation position can be changed, and the spike tooth 70 attached to the tooth bar 69 is provided so that the protrusion length can be adjusted, the receding angle θ of the spike tooth 70 can be changed. This makes it possible to expand the adaptability to the processed material, and also allows the effective diameter R to be changed by adjusting the protruding length of the spike tooth 70.
It is possible to easily change the gap between the concave 32 and 33 or the effective space volume between the outside of the flange 68 and the tip of the spike tooth 70 without requiring vertical adjustment of the teeth 2 and 33, and all of the parts are assembled. Therefore, elastic or rigid materials can be used depending on the purpose of each part, and the durability can be economically improved by preventing damage to the spike tooth 70 provided at the impact point, making it highly practical. It has a remarkable effect.

[Brief explanation of the drawing]

Fig. 1 is an overall 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 cross-sectional explanatory view of the threshing section, Fig. 4 is an enlarged side view of the same part, and Fig. 5
The figure is the same plan view, Figure 6 is an enlarged side view of the main parts, and Figure 7 is the same plan view.
The figure is an enlarged explanatory view of the same part. 25, 26... Separator cylinder (handling cylinder) 6
9...Spike tooth bar, 70...Spike teeth, θ...Retreat angle.

Claims (1)

[Scope of utility model registration request] A threshing device for a combine harvester, characterized in that in a structure having a threshing separator cylinder perpendicular to the direction of travel of the machine body, the cylinder is formed in a polygonal shape, and a spike tooth bar installed on the outside of the cylinder is arranged so that its installation position can be changed, and the spike teeth attached to the tooth bar are arranged so that the protruding length can be adjusted.