JP2010273566A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester having pulling-up tines capable of excellently securing harvesting efficiency. <P>SOLUTION: The combine includes a grain culm pulling-up device and an auxiliary pulling-up device configured to pull up non-reaping grain culms by upward movement along the lower half-arcuate part and the linear part of a tine chain in a state wherein many pulling-up tines are fitted to the tine chain wound around and extended across a pair of upper and lower sprockets and protruded from the tine chain in a substantially orthogonal state, wherein the lower part of the grain culm pulling-up device and the upper part of the auxiliary pulling-up device are partially arranged overlapping with each other in the front-rear direction, and the moving speed (peripheral speed) of pulling-up tines of the lower semi-arcuate part at the auxiliary pulling-up device is substantially equal to the moving speed of pulling and raising tines of the linear part at the grain culm pulling-up device. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a combine that steadily causes uncut grains.

  Conventionally, as a form of a combine pulling device, a large number of pulling tines are attached to a tine chain wound between a pair of upper and lower sprockets, and each pulling tine protrudes from the tine chain in a substantially orthogonal state. There exists what was comprised so that an uncut grain culm might be caused by moving from the lower part to the upper part along a lower semicircular arc part and a straight line part (for example, following patent documents 1).

JP 2003-79220 A

  However, in the above-described combine pulling device, the peripheral speed of the pulling tine located in the lower semicircular arc portion of the tine chain is higher (faster) than the moving speed of the pulling tine positioned in the linear portion. The pulling tine located in the semicircular arc part may cut the uncut grain halves from the middle part. In that case, it becomes a floating cereal in the reaping part, and the floating cereal may not be steadily taken into the subsequent threshing part. As a result, harvest efficiency is reduced.

  An object of this invention is to provide the combine which can solve the said problem.

  According to the first aspect of the present invention, there is provided a tine chain in which a large number of raised tines are protruded between a pair of upper and lower sprockets, and an uncut grain culm is produced by the raised tine rotating along the lower semicircular arc portion thereof. Auxiliary pulling device configured to cause a tine chain with a large number of lifting tines protruding in a folded state between a pair of upper and lower sprockets above the auxiliary pulling device, and uncut cereal grains from below to above along the straight portion A pestle lifting device configured to pull up the cocoon, and the upper portion of the auxiliary pulling device and the lower portion of the cocoon pulling device are partially arranged in the front-rear direction, and the auxiliary pulling device is further raised. By making the moving speed of the pulling tine of the lower semicircular arc part in the apparatus substantially the same as the moving speed of the pulling tine of the straight part in the grain raising apparatus, the auxiliary pulling Mikari culms from and apparatus to the grain 稈引 up system is characterized by being configured to be passed down without disturbing the uptake posture.

  The invention according to claim 2 is the combine according to claim 1, wherein the sprocket above the auxiliary pulling device and the sprocket below the grain raising device are configured on the same support shaft, The lower sprocket in the auxiliary pulling device is formed to have a larger diameter than the upper sprocket so as to be decelerated.

  In the invention according to claim 1, the moving speed (peripheral speed) of the pulling tine of the lower semicircular arc portion in the auxiliary pulling device and the moving speed of the pulling tine of the straight portion in the grain raising device are made substantially the same, Since the uncut milled rice cake is inherited from the raising tine of the lower semicircular arc portion in the pulling device to the pulling tine of the straight portion in the rice straw lifting device, the pulling tine located in the lower semicircular arc portion is not It is possible to prevent the chopped cereal from being cut from the middle part, prevent the cereal from being floated, and to ensure that the chopped cereal is taken into the subsequent threshing part. As a result, the harvesting efficiency can be ensured satisfactorily because the uncut grain culm is taken in from the auxiliary pulling device to the cereal pulling device without disturbing the posture.

  In the invention according to claim 2, since the lower sprocket of the auxiliary pulling device is formed to have a larger diameter than the upper sprocket and decelerated, the pulling of the lower semicircular arc portion in the auxiliary pulling device is caused. The moving speed (circumferential speed) of the tine can be set to the same or slightly lower speed (deceleration) as the moving speed of the pulling tine of the linear part in the pulling device, and cutting of the uncut grain by the pulling tine. It can be surely prevented.

It is a side view of the combine which concerns on embodiment. It is a top view of the combine of FIG. It is a side view of the cutting part of FIG. It is a top view of the cutting part of FIG. It is a power transmission diagram of the combine of FIG. (A) is a front view of the pulling apparatus of FIG. 1, (B) is the side view. It is explanatory drawing explaining the speed of the induction tine of FIG.

  Hereinafter, the combine which concerns on embodiment of this invention is demonstrated concretely, referring drawings.

[1. Overall structure of combine]
First, the overall configuration of the combine according to the present embodiment will be described. FIG. 1 is a side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a side view of the cutting unit, FIG. 4 is a plan view of the cutting unit, and FIG. 5 is a power transmission diagram of the combine.

As shown in FIGS. 1 and 2, the combine A according to the present embodiment has a track frame 1 on which the left and right traveling crawlers 2 are installed, a machine base 3 installed on the track frame 1, and a feed chain 5 on the left side. A threshing section 4 incorporating the gantry barrel 6 and the processing cylinder 127; a four-cut mowing section 7 provided in front of the threshing section 4; and a scouring processing section 8 that faces the terminal end of the sewage chain 9; Grain tank 10 for carrying grains from the threshing section 4 via the milling cylinder 11, a discharge auger 12 for discharging the grains in the grain tank 10 to the outside of the machine, a driving operation section 14 such as a steering handle, and a driver seat 15, and an engine 16 provided below the driving cabin 13, and configured to continuously harvest the culm with the reaping unit 7 and thresh with the threshing unit 4 while traveling on the field. .
The appearance of the combine shown in FIGS. 1 and 2 is merely an example.

Moreover, as shown in FIG.3 and FIG.4, while raising the right-and-left cutting attachment frame 17 from the front end of the machine base 3 to the front side of the threshing part 4, and providing the split pipe joint 18 in the upper part of each cutting attachment frame 17, A cutting input case 20 for interpolating a cutting input shaft 19 for transmitting power from the engine 16 is provided in the cutting unit 7.
Further, both ends of the cutting input case 20 are rotatably and detachably held on the upper part of the left and right cutting mounting frame 17 via the split pipe joint 18, and the cutting input case 20 is immediately before the threshing part 4. Horizontally supported horizontally in the left-right direction.
Further, the longitudinal transmission case 21 integrally extending from the middle portion of the cutting input case 20 toward the front obliquely downward direction, and the middle portion is integrally connected to the distal end of the longitudinal transmission case 21, and the left and right sides of the body are left and right at the distal end of the longitudinal transmission case 21. A horizontal transmission case 22 horizontally supported in the direction, and a four-piece five-piece cutting frame 24 whose rear portions are integrally connected by a horizontal connection frame (not shown). The cutting frame 24 is integrally extended in parallel from the horizontal transmission case 22 toward the front of the machine body, and the integrated cutting input case 20, the vertical transmission case 21, the horizontal transmission case 22, and the cutting frame 24 are connected to the cutting unit. The main frame 7 is constructed by assembling the components of the cutting unit 7 described later on the main frame, and the hydraulic unit (not shown) is formed between the machine base 3 and the vertical transmission case 21. ) Stretches, and are configured to lift around the input case 20 reaper the reaper 7 by extending and retracting the hydraulic cylinder.
Further, the right conveyance drive case 64 is raised from the middle portion of the vertical transmission case 21 at a right angle to the rotation plane of the right stock former conveyance chain 33R.

  Then, a vertical transmission shaft 44 whose upper end is interlocked and connected to the cutting input shaft 19 via a bevel gear is inserted into the vertical transmission case 21, and an intermediate portion is interlocked and connected to the lower end of the vertical transmission shaft 44 via a bevel gear. The shaft 45 is inserted into the lateral transmission case 22 so that power is transmitted from the longitudinal transmission shaft 44 and the lateral transmission shaft 45 to the pulling drive, the cutting drive, the conveying drive, etc., among the components of the cutting unit 7. ing.

[2. Configuration of the cutting part]
Next, the cutting unit 7 will be specifically described.

[2-1. Pre-processing mechanism of mowing unit]
First, the pre-processing mechanism unit of the cutting unit 7 will be described.
As shown in FIGS. 2 to 4, the pre-processing mechanism unit of the cutting unit 7 separates the cereal and uncut cereals to be sown and separates each sieving of the cereals to be sown into five for four lines. It consists of four raising devices 30a to 30d for four strips that cause uncut wheat grains after weeding.
And each raising device 30a-30d consists of the grain raising apparatus 100 and the auxiliary raising apparatus 200, respectively, the moving speed of each raising tine 220 of the lower semicircular arc part in the auxiliary raising apparatus 200, and the grain raising apparatus 100 The moving speeds of the respective pulling tines 120 in the straight line portion are substantially the same, and the pulling tines 120 in the lower semicircular arc portion in the auxiliary pulling device 200 are uncut from the pulling tines 120 in the straight line portion in the grain raising apparatus 100. The cereals are inherited and triggered.
Details of the pulling devices 30a to 30d, which are the main parts of the present invention, will be described later.

[2-3. Cutting mechanism of cutting part]
Next, the scraping mechanism part of the cutting part 7 will be described.
As shown in FIG. 4, the scraping mechanism of the cutting unit 7 scrapes the weed cereal, and as shown in FIG. 4, the first to fourth scraping belts BL <b> 1 to BL <b> 4 and the star It is comprised from foil ST1-ST4.

The first to fourth scraping belts BL1 to BL4 are respectively suspended between four large-diameter pulleys 41 and four small-diameter pulleys 42 respectively disposed behind the weed boards T1 to T5. In the first and second scrambling belts BL1 and BL2 and the third and fourth scrambling belts BL3 and BL4, each belt is disposed in a substantially C shape when viewed from the front, It is configured so that the two cereal grains that have been weeded are stirred.
In the figure, G1 to G4 indicate the rotation shafts of the large-diameter pulleys 41.

  Each large-diameter pulley 41 and star wheels ST1 to ST4 are coaxially supported by rotating shafts G1 to G4. Further, the first and second star wheels ST1, ST2 are meshed and rotated, and the third and fourth star wheels ST3, ST4 are meshed and rotated.

  A right stock drive sprocket 57 is provided below the rotary shaft G1, and the sprocket is coupled to the lateral transmission shaft 45 through a bevel gear via a right stock transport sprocket 69 and a right stock transport chain 33R. Yes. The right stock former transport chain 33R is a stock of two cereal grains that have been scraped by the cutting blade 32 and scraped by the first and second stir belts BL1, BL2 and the first and second star wheels ST1, ST2. Carry back while pinching the original.

  Similarly, a left stock drive sprocket 58 is provided below the rotary shaft G4, and the sprocket is linked via a left stock transport sprocket 75 and a left stock transport chain 33L that are linked to the lateral transmission shaft 45 through a bevel gear. It is connected. The left stock former transfer chain 33L is a stock of two cereal grains that have been scraped by the cutting blade 32 by being scraped by the third and fourth stir belts BL3, BL4 and the third and fourth star wheels ST3, ST4. Carry back while pinching the original.

  The two-row grain straws transported by the left and right grain straw transport chains merge into four strips at the end of transport of each chain, and are delivered to the lower feed chain.

  Moreover, the lower end part of each of the scrambling belts BL <b> 1 to BL <b> 4 corresponds to a part where the uncut grain culm caused by the auxiliary pulling device 200 is delivered to the culm pulling device 100. By comprising in this way, the uncut grain culm caused by the auxiliary pulling device 200 is pulled up by the rake belts BL <b> 1 to BL <b> 4 while being pulled up by the culm pulling device 100.

The power input path to the scraping mechanism is as follows.
That is, in the right transport drive case 64, a right transport drive shaft 67 for transporting the right cereal stock is connected to the upper end of the right transport drive shaft 67 in the middle of the vertical transmission shaft 44 via a bevel gear. A right stock transport sprocket 69 is provided. Further, the horizontal transmission shaft 45 is connected to the lower end of the vertical transmission shaft 44 via a bevel gear, and the end of the horizontal transmission shaft 45 is connected to the longitudinal pulling vertical transmission shaft 51 via the bevel gear. In the middle of the vertical transmission shaft 51, a left transport drive shaft 74 for transporting the left cereal stock is linked via a bevel gear, and a left stock transport sprocket 75 is connected to the upper end of the left transport drive shaft 74. is doing.

[2-3. Mowing mechanism part of mowing part]
Next, the cutting mechanism part of the cutting part 7 will be described. The harvesting mechanism section of the harvesting section 7 is composed of a clipper-shaped cutting blade 32 that simultaneously cuts four stocks of cereal stock at the time of scraping. The cutting blade 32 divides the movable blade into two at the central portion of the cutting width, reciprocates the left and right movable blades in opposite directions, and cancels vibrations, as shown in FIG. The crankshaft 56a, which is the left cutting blade drive shaft, is raised upward from a slightly inner side from the left end portion of the horizontal transmission shaft 45, and the right cutting blade is driven from the right end portion of the horizontal transmission shaft 45 via the bevel gear. The crankshaft 56b, which is the shaft, is raised upward, the left and right crankshafts 56a, 56b are protruded upward from the lateral transmission case 22, and the power of the left and right movable blades is taken out from the lateral transmission shaft 45.

[3. Specific configuration of pulling device]
Next, a pulling device that constitutes a part of the pre-processing mechanism unit and causes an uncut grain culm will be specifically described. In addition, since the basic structure and operation | movement are the same as the several raising apparatus 30a-30d with which the combine A is provided, these are named generically and the following description is made.

FIG. 6A is a front view of the pulling device 30, and FIG. 6B is a side view thereof.
As shown in FIG. 6, the pulling device 30 inherits the auxiliary pulling device 200 that causes an uncut grain culm in the field and the uncut grain culm that is caused by the auxiliary pulling device 200 to cause an uncut grain culm. It is comprised from the cereal pulling apparatus 100 pulling up.

  Further, the lower part of the culm pulling apparatus 100 and the upper part of the auxiliary pulling apparatus 200 are arranged in a partially overlapped state in the front and rear, and the auxiliary pulling apparatus 200 is added to the lower part of the cereal pulling apparatus 100 to assist the pulling. The lower end portion of the apparatus 200 is arranged near the farm surface, and each of the pulling tines 220a to 220c of the auxiliary pulling apparatus 200 causes a culm of the uncut grain culm. Is configured to pass. Accordingly, since the lower end portion of the cereal pulling device 100 is separated from the field surface, it does not have a function of causing the uncut rice cake on the field surface. The culm pulling device 100 causes the auxiliary pulsation to inherit the uncut culm from the device 200 and cause the entire culm.

  Moreover, the total length of the combination of the grain raising device 100 and the auxiliary pulling device 200 in the pulling device 30 is substantially the same as the overall height of a conventional general pulling device. That is, the length of the grain raising device 100 in the upper half of the pulling device 30 is shorter than that of a conventional general pulling device, and the length of the auxiliary pulling device 200 in the lower half of the pulling device 30 is longer. Thus, the overall length of the pulling device 30 is made substantially the same as the general length of a conventional general pulling device. By comprising in this way, it replaces with the conventional combine pulling apparatus, and there is no problem in applying the pulling apparatus 30 of this embodiment of this embodiment.

  The pulling device 30 is constituted by the culm pulling device 100 and the auxiliary pulling device 200 as described above. Hereinafter, each configuration of the pulmonary pulling device 100 and the auxiliary pulling device 200 will be described in detail. Explained.

As shown in FIG. 6, the grain lifting device 100 includes a vertically long lifting case 150, an upper drive sprocket 50 and a driven sprocket 111 respectively pivoted on an upper end portion and a lower end portion of the pulling case 150, each sprocket 50, The tine chain 130 is suspended between 111, and the raising tines 120a to 120j are provided so as to be foldable on the outer periphery of the chain. The upper drive sprocket 50 and the driven sprocket 111 are pivotally supported by the pulling tine drive shaft 49 and the support shaft 115, respectively.
In the figure, 113 is a tension roller for stretching a tine chain 130 suspended between the sprockets 50 and 111, and 116 is a state in which the raising tines 120a to 120j are folded immediately before the lower semicircular arc portion of the culm lifting device 100. A tine abutting body disposed so as to abut on the base of the tine in order to displace the tine in a protruding state.

The power transmission path | route of this grain raising apparatus 100 is demonstrated.
The cedar pulling device 100 receives power from a cutting input shaft 19 that is linked to the engine 16. The cutting input shaft 19 uses a horizontal transmission shaft 45 that is horizontally mounted on the base of the cutting portion 7 as a vertical transmission shaft. 44 are linked together. In addition, a pulling vertical transmission shaft 51 extends vertically upward at the end of the horizontal transmission shaft 45, and the end of the pulling vertical transmission shaft 51 is installed horizontally on the upper edge of the cutting unit 7. The pulled lateral transmission shaft 52 is interlocked and connected.
In the middle of the pulling horizontal transmission shaft 52 mounted on the upper part, four pulling drive rods 53 corresponding to four-cutting are suspended through bevel gears, and a fallen cedar is placed at the lower end of each rod 53. An upper drive sprocket 50 that is pivotally supported at the upper end of a pulling case 150 for pulling up is interlocked and connected. Note that the lower end of each rod 53 is linked to the pulling tine drive shaft 49 via a bevel gear.
Therefore, the power from the engine 16 is transmitted through the transmission path of the horizontal transmission shaft 45 → the pulling vertical transmission shaft 51 → the pulling horizontal transmission shaft 52 → the pulling drive rod 53 → the pulling tine drive shaft 49 → the upper drive sprocket 50. . In this manner, the tine chain 130 suspended between the upper drive sprocket 50 and the driven sprocket 111 is rotated to rotate and circulate the raising tines 120a to 120j protruding from the outer periphery of the tine chain 130.
In the figure, reference numeral 54 denotes a pulling speed change mechanism interposed in the middle of the pulling vertical transmission shaft 51, and is configured to be able to change the rotation speed of the pulling tines 120a to 120j.

  On the other hand, as shown in FIG. 6, the auxiliary pulling device 200 includes a vertically long auxiliary pulling case 250, an upper drive sprocket 212 and a driven sprocket 211 respectively pivoted on the upper end and lower end of the pulling case 250, The tine chain 230 is suspended between the sprockets 212 and 211, and the pulling tines 220a to 220c projecting from the outer periphery of the chain.

  The auxiliary pulling device 200 is arranged with its upper portion overlapped with the front lower portion of the grain raising device 100, and the stock of the rice straw is caused by the raising tines 220 a to 220 c of the auxiliary raising device 200, Next, the main body of the raised culm is lifted by the pulling tines 120a to 120j of the culm pulling device 100 that moves above the auxiliary pulling device 200, and the pulling operation of the entire culm is performed.

  The power input path to the auxiliary pulling device 200 is as follows. In other words, the spindle for the driven sprocket 111 of the grain raising device 100 and the axis for the upper drive sprocket 212 of the auxiliary pulling device 200 are set to the same spindle 115, so that the upper drive sprocket 50 of the grain raising device 100 is obtained. Is configured to transmit power to the upper drive sprocket 212 of the auxiliary pulling device 200.

  That is, the support shaft 115 that pivotally supports the driven sprocket 111 of the grain raising device 100 is extended toward the front auxiliary pulling device 200, and the boss portion 212a of the upper drive sprocket 212 of the auxiliary pulling device 200 is supported. By being fixed to the shaft 115, the upper drive sprocket 50 of the grain pulling device 100 is configured to be auxiliary raised to transmit power to the upper drive sprocket 212 of the device 200.

  Further, the driven sprocket 211 is configured to have a larger diameter than the upper drive sprocket 212, so that the rotational speed of the driven sprocket 211 is reduced more than the rotational speed of the upper drive sprocket 212.

[4. Induction tine speed]
Next, the speed of each pulling tine will be specifically described with reference to FIG.
In FIG. 7, if the radius of the driven sprocket 111 of the grain lifting device 100 is R1 and the angular velocity is ω1, the moving speed V1 of the pulling tine 120c in the linear portion is
V1 = R1 × ω1 (Formula 1)
It becomes.

On the other hand, if the length of each pulling tine of the cereal pulling device 100 is L, the moving speed V2 of the pulling tine 120b in the lower semicircular arc portion is:
V2 = (R1 + L) × ω1 (Expression 2)
It becomes.
That is, the moving speed V2 of the lower semicircular arc portion of the cereal pulling device 100 is higher than the moving speed V1 of the linear portion.

Further, if the radius of the driven sprocket 211 of the auxiliary pulling device 200 is R3 and the angular velocity is ω2, the moving speed V3 of the tine chain 230 in the lower semicircular arc portion of the auxiliary pulling device 200 is
V3 = (R3 + L) × ω2 (Formula 3)
It becomes.

And
ω2 = (R2 / R3) × ω1 (Expression 4)
Therefore, the moving speed V3 is
V3 = (R3 + L) × (R2 / R3) × ω1 (Formula 5)
It becomes.

Therefore, the moving speed V3 of the tine chain 230 in the lower semicircular arc portion of the auxiliary pulling device 200 can be adjusted by the radius R2 of the upper drive sprocket 212 and the radius R3 of the driven sprocket 211. Therefore, by appropriately selecting both the radii R2 and R3, the moving speed of each of the raising tines 220a to 220c in the lower semicircular arc portion is substantially equal to or slightly the same as the moving speed of each of the raising tines 120a to 120j in the linear portion. Can be slowed down.
As a result, the uncut wheat straw can be caused to be inherited from the pulling tine of the lower semicircular arc portion of the auxiliary pulling device 200 to the pulling tine of the linear portion of the pulling device, and the cutting of the uncut wheat straw by the pulling tine is ensured. Can be prevented. Moreover, each raising tine 220a-220c of the lower semicircular arc part of the auxiliary raising apparatus 200 does not cut the uncut grain halves from the middle part, and the occurrence of floating cereals can be prevented. The harvested cereal meal can be steadily taken into the threshing part.

Although one embodiment according to the present invention has been specifically described, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible.
For example, you may comprise so that the length of the pulling tine of the grain raising apparatus 100 and the pulling tine of the auxiliary pulling apparatus 200 may differ. Moreover, you may comprise so that each member of the grain raising apparatus 100 and the auxiliary raising apparatus 200 may be stored in one raising case.

A ... Combine 100 ... Grain puller, 120a-120j ... Pulling tine 111 ... Driven sprocket, 50 ... Upper drive sprocket, 115 ... Spindle 200 ... Auxiliary pulling device, 220a-220c ... Pulling tine 211 ... Driven sprocket, 212 ... Upper drive sprocket

Claims (2)

Auxiliary elevator configured to wind up an elevating tine chain with a large number of elevating tines protruding between a pair of upper and lower sprockets, and to cause uncut cereals by the elevating tine rotating along its lower semicircular arc part Equipment,
Above this, a culm pulling device configured to wind a tine chain having a large number of pulling tines projected in a folded state between a pair of upper and lower sprockets and to pull the uncut culm upward from below along the straight line portion. And more
Moreover, the upper part of the auxiliary pulling device and the lower part of the cereal pulling device are arranged in a partially overlapped state in the front and rear,
Furthermore, by making the moving speed of the pulling tine of the lower semicircular arc portion in the auxiliary pulling device substantially the same as the moving speed of the pulling tine of the straight portion in the grain raising device, the auxiliary pulling device moves the grain from the auxiliary pulling device. A combine that is configured so that the unharmed cereal can be taken into the cocoon lifting device without being disturbed.
  The sprocket above the auxiliary pulling device and the lower sprocket of the grain pulling device are configured by the same spindle, and the lower sprocket of the auxiliary pulling device is formed to have a larger diameter than the upper sprocket. The combine according to claim 1, wherein the combine is decelerated.

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