JP2001169640A - Reaping part of combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of a device for lifting and lowering the reaping part of a combine. SOLUTION: The reaping part of the combine is suspended with an electric cylinder 27 placed between the reaping part 7 and a machine frame. The rotary supporting point of the reaping part and the rotary supporting point of a culm base transfer apparatus used also as a longitudinal transfer apparatus are located on the same axis 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a combine harvester.

[0002]

2. Description of the Related Art Conventionally, a self-removing type combine has a mowing section in which a raising device is arranged at a front portion, and a cutting blade and a transport device are arranged at a rear portion, and a threshing device and a straw processing device are arranged at a rear portion. Was arranged. Then, the raising device winds up the protruding chain to accommodate it in the case, and arranges it so that the tine faces each other in a front view, and rotates the chain in the vertical direction, so that the tine is moved in the horizontal direction. A plurality were arranged in parallel according to the number of strips. In addition, the transfer device is composed of a lower transfer device, a tip transfer device, a vertical transfer device, and the like, and the stock source is configured to be inherited from the lower transfer device to the feed chain via the vertical transfer device. The turning fulcrum of the mowing unit is arranged on a support standing upright on the front part of the body frame, and the turning fulcrum of the vertical transport device is arranged on the mowing frame of the mowing unit.

[0003]

However, in the conventional combine, if the axis of the handling cylinder of the threshing device is disposed in the front-rear direction, the overall length of the fuselage becomes longer in the front-rear direction, and the turning radius becomes larger. It became worse, and the area of hand-cutting at the four corners of the field and the approach to the field was also increased. In order to reduce the overall length by arranging the axis of the handling cylinder horizontally and horizontally, it is necessary to transport the cut culm to one end of the left and right, but raise the case as in the past and arrange the case vertically. In such a case, the culms were once collected in the center on the left and right sides, and then conveyed to the left and right sides, resulting in a longer conveying distance and a disturbed posture. In addition, the grain culm will be conveyed rearward while standing up, and in order to take over to the feed chain, the inclination angle of the vertical conveyance device will be small and it will be extended long behind, so the vertical conveyance device will be shortened to short culm. If the mowing part is raised at the aligned position, it will interfere with the crawler.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. According to the first aspect of the present invention, in the elevating mechanism of the reaping unit of the combine, an electric cylinder is arranged between the reaping unit and the body frame to support the reaping unit.

According to a second aspect of the present invention, in the configuration in which the cutting portion protruding forward of the body of the combine is arranged, the rotation fulcrum of the cutting portion is the same as the rotation fulcrum of the stock transfer device which also serves as the vertical conveyance device. It was arranged on the axis.

According to a third aspect of the present invention, a stopper is disposed on the lower surface of the stock feeder, and the stopper is protruded toward the reaping frame so that the stock feeder is also raised when the cutting unit is raised. Configured.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The means for solving the present invention are as described above, and the embodiments of the present invention will be described next.
FIG. 1 is an overall side view of a combine having a raising case of the present invention, FIG. 2 is a plan view thereof, FIG.
FIG. 4 is a plan view of the raising device according to the first embodiment of the present invention, FIG. 5 is a front view thereof, FIG. 6 is a plan view of the raising device of the second embodiment of the present invention, FIG. FIG. 8 is a plan view of the raising device according to the third embodiment of the present invention, FIG. 9 is a plan view of the raising device according to the fourth embodiment of the present invention, FIG. 10 is a side view of the electric cylinder and its periphery, FIG. Is also a plan view,
FIG. 12 is a bottom view showing the mounting configuration of the electric cylinder and the connecting pipe, FIG. 13 is a partial side view of a combine showing the rotating configuration of the stock transfer device, FIG. 14 is an enlarged view of FIG.
FIG. 15 is a plan view, partly in section, of the motor showing the configuration of power transmission of the motor.

1 to 3, the overall structure of the combine will be described. The handling cylinder 4 of the combine according to the present embodiment is arranged such that its rotation axis 4a is arranged in the left-right direction and the length in the longitudinal direction of the fuselage is shortened. The combine supports the body on the crawler-type traveling device 1, and the crawler-type traveling device 1 supports the idler wheels and the driven wheels on the track frame 2, and fixes the body frame 35 on the track frame 2. ing. The sorting unit is disposed on the body frame 35, and the threshing unit 3 is disposed thereon. The threshing unit 3 is composed of the handling cylinder 4 and the feed chain 5, and the sorting unit is composed of the swinging sorting device 6, the Karamin, the drifting board, etc. . A Glen tank 19 is arranged on the threshing unit 3. The reaper 7 is disposed at the front end of the machine body, and includes a raising case 81, a scraping device 9, a cutting blade 10, a stock carrier 12, and a tip carrier 13.

A control unit 14 is provided on the right side in the traveling direction of the reaper 7.
The steering section 14 is arranged such that a seat 16 is arranged at the rear of the step 15, an operation column 11 is erected at the front, and a round handle 17 is arranged on the operation column 11 so that the steering section 14 can be steered. The main transmission lever 18 is disposed on the side of the main transmission lever 18. A grain tank 19 is arranged on the threshing unit 3, and sorted kernels are charged by a fryer 20. And
An engine 22 is mounted on the rear part of the fuselage so that the crawler traveling device 1 can be driven via a transmission case 23, and a straw cutter 21 is arranged on a side of the engine 22.

Next, a specific configuration and operation will be described. In the cutting section 7, a triangular weeding plate 41 is disposed at the front end of the cutting frame 29, and a raising device 40 of the present invention, which will be described later, is disposed at the rear of the weeding plate 41. A scraping device 9 composed of a rubbing belt or the like is arranged, and the grain stalks are raked by the rake device 9 from the left and right centers to the rear after being raised by the raising device 40. Then, the stock is held by the stock carrier 12 and the cutting blade 1 is moved.
0 cuts off the stock. A stock carrier 12 and a head carrier 13 are arranged from the rear of the raising device 40 to the rear of the threshing unit 3 along the machine body left side in the traveling direction, and the stock carrier 12 and the head carrier are arranged. 13 is a transfer device 24 at a side portion between the rear portion and the feed chain 5.
Is arranged. The stock transfer device 12 is configured to serve both as a conventional lower transfer device and a vertical transfer device.

The feed chain 5 is located at the rear of the threshing unit 3 and below the Glen tank 19 and is disposed substantially horizontally in the left and right direction. The stem of the culm is pinched and transported from left to right in the traveling direction. The spike side of the grain culm is guided from the rear of the spike transporting device 13 into the threshing inlet 25 opened at the upper left of the machine, is thrown in, and is threshed by the rotation of the handling drum 4 of the threshing unit 3. In the present embodiment, the threshing unit is of an upwardly-handled type, and the height of the handling drum 4 is reduced so that the center of gravity is lowered to improve the weight balance of the machine body.

A lower portion of the handling cylinder 4 is covered with a crimping net 30, and a sorting mechanism 31 is disposed below the crimping net 30. The sorting mechanism 31 includes a swing sorting device 6 that swings in the front-rear direction with the rear portion as a fulcrum, a sieve wire 32 that is arranged at the front end of the swing sorting device 6 and swings, and a rear lower portion of the swing sorting device 6. , Which supplies sorting air from the lower rear to the upper front, and the first conveyor 34 and the first gutter which are provided at the lower front of the sorting device 6 and take out the leaking grains into the fryer 20. A second conveyer 36 or a second gutter provided below the sieve wire 32 for taking out a second reductant mixed with leaking grains and straw chips, and a second reductant from the second conveyor 36. A second reduction conveyor 36 for returning to the upper surface of the device 6;
2 is composed of a suction / discharge dust fan 37 and the like for sucking straw dust, dust and the like on the upper surface of the sieve wire 32 from the suction port on the upper right side and discharging the dust outside the machine.

Further, the rear end of the handling cylinder 4 is used as a fourth port, and the straw is discharged from the rear right side of the handling cylinder 4 to the straw cutter 21, eliminating the straw conveyor and reducing the weight and size of the body. I'm trying. A grain tank 19 is disposed above the threshing unit 3 and has a substantially body width in the left-right direction from the rear part of the seat 16 to the rear part of the body in the front-rear direction, so that the capacity for storing grains is made as large as possible. The lower portion of the Glen tank 19 has a “V” shape when viewed from the front, and a discharge conveyor 39 is arranged at the bottom in the front-rear direction so that the stored paddy can be discharged rearward.

In such a configuration, the raising device 40
Are rotated to raise the lodging culm, and are scraped to the center side by the scraping device 9 to cut the root by the cutting blade 10. Then, the grain culm is sandwiched between the stock carrier 12 and the head carrier 13 and conveyed rearward while standing up along the left side of the machine body.
4 passes the stock to the feed chain 5 and guides the head to the threshing inlet 25.

The grain stalk held by the feed chain 5 is thrown away by the rotation of the handling cylinder 4 while being conveyed rightward, and the straw is sent to the straw cutter 21 from the right end, cut and released to the field from behind after cutting. Is done. Grains, dust, and the like that have leaked from the crimp net 30 fall onto the swing sorting device 6, and straw waste, dust, and the like are sent forward by wind sorting and swing sorting. The fine granules pass through chaff fins and grain sieves, and are guided by a flowing grain plate, etc., fall on the first gutter, and are conveyed to the first conveyor 34.
To the right side, and stored in the Glen tank 19 via the frying cylinder 20.

The second product that has dropped after passing through the sieve wire 32 falls on the second gutter, is returned from the second conveyor 36 via the second reduction conveyor again to the rear portion of the oscillating and sorting device 6, and is re-used. Be sorted out. The straw dust and dust are sucked by the suction / discharge fan 37 and discharged outside the machine.

Next, the structure of the first to fourth embodiments in the raising device 40 of the mowing unit 7 according to the present invention will be described. First, the first embodiment will be described in detail. As shown in FIGS. 4 and 5, the raising device 40 has a pair of left and right raising cases 81 </ b> L and 81 </ b> R arranged at the front of the reaper 7 with a slight inclination so as to fall rearward. In the present embodiment, double-row cutting is performed, and the left raising case 81L is arranged to extend obliquely upward and rearward from the lower part of the cutting frame to the height of the cereal stem on the left side of the machine body. On the other hand, the right raised case 81R is configured to have a shorter overall length than the left raised case 81L, the lower portion of the right raised case 81R is located substantially at the center of the body left and right, and the upper portion is obliquely upper and lower. The left raising case 81L is extended to a position lower than the height of the raising case 81L, and the upper portion is disposed to be inclined leftward when viewed from the front.

The drive sprockets 51 and 51 are provided at the upper part of the raising cases 81L and 81R, and the driven sprocket 5 is provided at the lower part.
2 and 52 are arranged, and chains 53 and 53 are wound between the two sprockets 51 and 52, respectively.
Are pivotally supported at fixed intervals at 53, and guides are provided on the sides of the left and right raising cases 81L and 81R, respectively, so that the tines 43
.. Are configured so as to project left and right facing each other, and are raised without guides when rotating left and right outside.
It is stored in the 1R. The left and right raising cases 81L and 81R have trapezoidal bulging portions 81a and 81a extending inward on the opposing surfaces at the upper portions thereof, and the bulging portions 81R of the right raising case 81R.
The upper and lower sides 81b on the left side of “a” are the left raising case 81L.
Is arranged so as to wrap in parallel with the trajectory A of the tip of the tine.

In this way, in the cutting section 7, the cereal stalks are weeded by the weeding boards 41, and then moved to the left side by the raising device 40 while being raised.
It is taken over by the stock carrier 12 and the tip carrier 13 and is nipped and transported rearward.

As described above, in the first embodiment, the right raising case 81R is shorter than the left raising case 81L so as to reduce the weight and to reduce the weight of the reaping portion 7 supported by the hook. Since the raising case 81R has a configuration in which the upper portion is inclined leftward when viewed from the front, the lower portion of the raising case 81R on the right side is sunk under the control section 14 obliquely downward, and the entire raising apparatus 40 is moved toward the cockpit 14 side. They can be arranged side by side, reducing the overall width of the fuselage and improving the visibility of the scraping position. In addition, when the operator boarded to reduce the overall width of the fuselage, the weight balance, which conventionally imposed a burden on the right side of the fuselage, has been improved, and with the reduction in the full width of the fuselage, the distance between the traveling devices 1 can be reduced, The running allowance of the cereal stem by the traveling device 1 can be reduced.

Further, the lower part of the raising device 40 has the same raising performance as the conventional one, and the upper raising case 81R at the upper part thereof is inclined leftward in a front view, and the upper and lower sides of the left side of the bulging portion 81a. 81b and the grain stalk carried by the right tine 43 at the bulging portion 81a and the grain stalk carried by the left tine 43 so that the locus A of the tine tip of the left raising case 81L overlaps. And the culm joins the tine 4 of the left raising case 81L along the upper and lower sides 81b of the right raising case 81R.
3 and is smoothly delivered to the successor of the stock carrier 12 and the head carrier 13.

Next, a second embodiment of the raising device 40 will be described. In the second embodiment, as shown in FIGS. 6 and 7,
The raising device 40 includes a pair of left and right raising cases 82L and 82.
The R is disposed at the front of the reaper 7 with a slight inclination so as to fall backward. In the present embodiment, double-row cutting is performed, and the left raising case 82L extends vertically upward and downward from the lower part of the cutting frame to about the height of the culm on the left side of the machine body, and the upper part is inclined leftward in front view. It is arranged. On the other hand, the right raising case 82R is configured to have a shorter overall length than the left raising case 82L, and the lower portion of the right raising case 82R is located substantially at the center of the right and left sides of the fuselage.
The upper portion extends obliquely upward and rearward to a position lower than the height of the left raising case 82L, and the upper portion is disposed to be inclined leftward when viewed from the front.

A driving sprocket and a driven sprocket are arranged at the upper part of the raising cases 82L and 82R.
A chain is wound between the two sprockets, and tines 43 are pivotally supported at regular intervals on the chain.
Guides are provided on the sides where the left and right raising cases 82L and 82R face each other, and the tines 43, 43... Protrude.
・ It is stored in the 82R. The left and right raising cases 82L and 82R respectively have trapezoidal bulging portions 82a and 82a extending inward on the upper and opposing surfaces thereof, and the right raising case 82R has a left side of the bulging portion 82a. The upper and lower sides 82b of the surface are disposed so as to wrap in parallel with the locus of the tine tip of the left raising case 82L.

In this way, in the reaping section 7, the cereal stalks are weeded by the weeding boards 41 and then moved to the left side by the raising device 40 while being raised.
It is taken over by the stock carrier 12 and the tip carrier 13 and is nipped and transported rearward.

As described above, in the second embodiment, the right raising case 82R is shorter than the left raising case 82L so as to reduce the weight and to reduce the weight of the reaping portion 7 supported by the hook. Since the raising case 82R has a configuration in which the upper part is inclined leftward when viewed from the front, the lower part of the raising case 82R on the right side is sunk under the control unit 14 obliquely downward, and the entire raising device 40 is moved to the cockpit 14 side. It can be arranged side by side, the entire body width can be reduced, and the visibility from the control unit 14 can be improved. In addition, when the operator boarded to reduce the overall width of the fuselage, the weight balance, which conventionally imposed a burden on the right side of the fuselage, has been improved, and with the reduction in the full width of the fuselage, the distance between the traveling devices 1 can be reduced, The running allowance of the cereal stem by the traveling device 1 can be reduced.

In the lower portion of the raising device 40, the same raising performance as that of the conventional case is provided, and in the upper portion, the right raising case 82R is inclined leftward when viewed from the front and the upper and lower sides of the left side surface of the bulging portion 82a. The cereal stem conveyed by the right tine and the cereal stem conveyed by the left tine at the bulging portion 82a so that the locus 82b and the locus B of the tine tip of the left raising case 82L overlap. The culm joins and the upper and lower sides 82b of the right raising case 82R
Is carried by the tine 43 of the left raising case 82 </ b> L along the line, and is smoothly delivered to the successor of the stock carrier 12 and the head carrier 13.

Further, left and right raising cases 82L and 82
Both the R and the top are inclined to the left as viewed from the front, so that the grain stalks are carried out to the obliquely rear left side, and the inheritance position to the stock carrier 12 and the head carrier 13 is further to the left. Prevents the stalks from falling into the space formed between 40 and one end of the stock transfer device 12 and one end of the spike transfer device 13, and improves the accuracy of inheritance of the stalks in the space. ing.

Next, a third embodiment of the raising device 40 will be described. In the third embodiment, as shown in FIG. 8, the raising device 40 includes a pair of left and right raising cases 83 </ b> L and 83 </ b> R arranged at the front of the cutting unit 7 with a slight inclination. In the present embodiment, double-row cutting is performed, and the left raising case 83L is disposed so as to extend in the vertical direction on the left side of the machine body and diagonally upward and rearward from the lower part of the cutting frame to the height of the grain culm. On the other hand, the right raising case 83R is configured to have a shorter overall length than the left raising case 83L, the lower part of the right raising case 83R is located substantially at the center of the fuselage left and right, and the upper part is obliquely upper and lower. It extends to a position lower than the height of the raising case 83L on the left side, and the upper part is arranged to be inclined leftward when viewed from the front.

The driving sprockets 57 and 57 and the driven sprocket 5 are provided at the upper part in the raising cases 83L and 83R.
8 and 58 are arranged, a chain 59 and 59 are wound between the sprockets 57 and 58, and the tines 43 and 43 are pivotally supported on the chain 59 and 59 at regular intervals.
Guides are provided on the sides of the left and right raising cases 8L and 8R, respectively, to protrude the tines 43, 43.
83R.

Conventionally, as shown in FIG. 4, in the left raising case 81L, the driving sprocket 51 is disposed immediately behind the driven sprocket 52, but in the present invention, as shown in FIG. , Left raising case 83L
, The driving sprocket 57 is disposed diagonally to the left and rear of the driven sprocket 58.

The right raising case 82R has a trapezoidal bulge 83a extending leftward on the upper left side,
The upper and lower sides 83b on the left side of the bulging portion 83a are disposed so as to wrap in parallel with the locus of the tine tip of the left raising case 83L.

In this way, in the cutting section 7, the cereal stalks are weeded by the weeding boards 41, 41, and then moved to the left by the raising device 40 while being raised.
It is taken over by the stock carrier 12 and the tip carrier 13 and is nipped and transported rearward.

As described above, in the third embodiment, in the left raising case 83L, the driving sprocket 57 is disposed diagonally to the left of the driven sprocket 58 to tilt the rotation trajectory of the chain 59. The tine is started to be stored in the case inside the upper part of the raising case 83L. For this reason, it is possible to eliminate the bulging portion of the left raising case 83L and guide the grain stalk on the inner side surface of the raising case 83L, and to increase the distance between the upper portions of the two raising cases 83L and 83R. Thus, the culm can flow smoothly.

Next, a fourth embodiment of the raising device 40 will be described. In the fourth embodiment, as shown in FIG. 9, the raising device 40 includes a pair of left and right raising cases 84 </ b> L and 84 </ b> R arranged at the front of the cutting unit 7 with a slight inclination. In this embodiment, double-row cutting is performed, and the left raising case 8 is used.
4L extends vertically upward and backward from the lower part of the mowing frame to the height of the cereal stem on the left side of the fuselage. On the other hand, the right raising case 84R is configured to have a shorter overall length than the left raising case 84L, and the lower portion of the right raising case 84R is located substantially in the center of the right and left sides of the fuselage. Extends obliquely upward and rearward to a position lower than the height of the left raising case 84L,
When viewed from the front, the upper part is arranged to be inclined leftward.

A driving sprocket and a lower driven sprocket are arranged in the upper portions of the raising cases 84L and 84R, respectively.
A chain is wound between the two sprockets, and a tine is pivotally supported at a constant interval on the chain. Guides are provided on the sides of the left and right raising cases 84L and 84R, respectively, so that the tine protrudes. Is pivoted to be retracted and stored in the cases 84L and 84R.

Also, the diameter of the star wheel 64 for transmitting the driving force below the driving sprocket of the right raising case is made larger than the diameter of the star wheel 65 below the driving sprocket of the left raising case, so that the right and left star wheels 6 are moved.
The confluence of the 4.65 rotating surfaces is relatively shifted to the left, and the conveying directions of the stock carrier 12 and the ear carrier 13 are arranged in the flow direction of the grain stem by the tine. That is, from the raising device 40 to the stock transfer device 12 and the tip transfer device 1
Up to 3, the line C of the conventional stalk flow was bent in a crank shape. However, the left and right star wheels 64 and 65 have different diameters, that is, the diameter of the right star wheel 64 is the left side (the feed chain side). ) Is configured to be larger than the diameter of the star wheel 65 so that the line D of the flow of the cereal stem is arranged in a straight line.

The left and right raising cases 84L and 84
R is a trapezoidal bulging portion 84 on the upper side and the opposing surface side,
a and 84a are extended inward, and the upper and lower sides 84b on the left side of the bulging portion 84a of the right-side raising case 84R are arranged so as to wrap in parallel with the locus of the tine tip of the left-side raising case 84L. Has been established.

In this manner, in the cutting section 7, the cereal culm is weeded by the weeding boards 41, 41, and then moved to the left side by the raising device 40 while being raised.
It is taken over by the stock carrier 12 and the tip carrier 13 and is nipped and transported rearward.

As described above, in the fourth embodiment, since the cereal stem is arranged so as to flow in a straight line from the raising device 40 to the stock carrier 12 and the ear tip carrier 13, the flow of the cereal stem is: The appearance is beautiful,
In addition, the transfer of the cereal stalk is smoothly performed in the inheriting portion between the raising case and the stock transfer device and the spike transfer device, which is effective in preventing the stalk and clogging of the cereal stalk and the disturbance of the transfer.

Next, the mowing unit elevating mechanism according to the present invention will be described. As shown in FIGS. 10 to 12, the mowing portion 7 is supported so as to be vertically rotatable around a pivot shaft 26 provided at the front portion of the body frame 35, and is provided between the conventional track frame 2 and the mowing frame 29. A hydraulic cylinder was interposed between them to lift the reaping unit 7 so as to be able to move up and down. In this embodiment, as shown in FIG. 1, an electric cylinder 27 is interposed between the frame supporting the step 15 and the mowing frame 29, and is vertically moved up and down while being suspended around the rotation fulcrum shaft 26. That's how it works.

The electric cylinder 27 comprises a piston rod 27a, a cylinder 27b and a motor.
The piston 27a is inserted from the lower part of the cylinder 27b. The lower part of the piston rod 27a is connected to a connecting body 70 via a pin 71. The connecting body 70 is connected to the cutting frame 29 via a stay 73. The mowing frame 29 is supported by the electric cylinder 27.

An arm 66 projects from the base of the cutting frame 29, and a lower end of a damper 72 made of a gas spring or the like is pivotally connected to an end 66a of the arm 66. The upper end of the damper 72 is connected to the electric cylinder. The damper 72 prevents the descent of the mowing unit 7 when the electric cylinder 27 moves up and down. With such a configuration, the mowing unit 7 has been conventionally moved up and down by hydraulic pressure using a hydraulic cylinder. In this embodiment, the mowing unit 7 is electrically driven using an electric cylinder 27. Since the part 7 was raised and lowered, a space for disposing hydraulic equipment such as a hydraulic pump, a valve and a hydraulic hose for raising and lowering by hydraulic pressure was required, and the number of parts was increased. The use of the hydraulic device is eliminated, and the lifting mechanism of the reaper 7 can be made compact.

As shown in FIGS. 13 and 14,
The rotation fulcrum shaft 26 supports the mowing unit 7 so as to be vertically rotatable, and also supports the stock transfer device 12 so as to be vertically rotatable. Then, as shown in FIGS. 14 and 15,
A motor 74 is disposed above the rotation fulcrum shaft 26, a gear 91 is fixedly mounted on a drive shaft 74a of the motor 74, and a screw rod 93 is disposed in parallel with the drive shaft 74a. Rod 93
The gear 92 is fixed to the rear end of the
1 is engaged. The gears 91 and 92 have a casing 95
And a guide plate 94 is protruded from the front surface of the casing 95, and a guide groove 94a is provided in a longitudinal direction at a vertical center position of the guide plate 94, and a nut body 96 is screwed into the screw rod 93. Then, the left end 96a of the nut body 96 is engaged with the guide groove 94a, and a pin 97 is projected from the right end 96b of the nut body 96, and the arm 75 is pivotally supported by the pin 97. Is pivotally connected to a connecting arm 76 via a pin 98, and a lower end of the connecting arm 76 is connected to the rotating arm 66.

With this configuration, the motor 74
By driving the motor 74 → the gear 9
1 → gear 92 → screw rod 93,
Is rotated, and the nut body 9 inserted into the screw rod 93 is rotated.
6 is a screw rod 93 in which a screw groove cut on the inner peripheral surface of the nut body 96 rotates while its rotation is regulated by the guide groove 94a.
The nut 96 slides in the front-rear direction.

In this manner, the motor 74 is rotated forward and reverse to slide and displace the arm 75. For example, when the motor 74 is rotated forward, the arm 75 is pulled backward and the connecting arm 7 is rotated.
6, the rotation arm 66 is rotated clockwise as viewed from the left side, and the stock transfer device 12 is rotated in the same direction, and the rear portion of the stock transfer device 12 is lowered. The load of the stock transfer device 12 is set so that the front end of the stock transfer device 12 is always at the lowest position by the balance spring 77 disposed obliquely below the rotation fulcrum shaft 26.

An elongated hole 75a is formed in the longitudinal direction of the arm 75, and the pin 98 is engaged with the elongated hole 75a to slide the connecting arm 76 forward and backward along the elongated hole 75a. It is movable, that is, the stock transfer device 12
It can be rotated clockwise in left side view.

As shown in FIG. 13, a stopper 78 is fixedly provided at the front lower portion of the frame portion of the stock transfer device 12, and its tip is extended above the cutting frame 29. When the mowing part 7 is raised, it comes into contact with the mowing frame 29.

As described above, in this embodiment, the motor 74 is driven to slide the arm 75, and the stock transfer device 12 is configured to rotate vertically within the range of the rotation angle α. When the cutting unit 7 is raised, the cutting frame 29 comes into contact with the stopper 78 and the stock carrier 1
2 is rotated upward, and the rotation range is
From the upper end position when the stock transfer device 12 is rotated, the stock transfer device 12 is rotated between rotation angles β (α <β) until the stock transfer device 12 is kept substantially horizontal by the balance spring 77. I do.

Further, since the slot 75a is provided in the arm 75 so that the connecting arm 76 is slidable and rotatable and the stock carrier 12 is rotatable, the mowing part 7 is raised. In some cases, the connecting arm 75 slides and rotates in the front-rear direction due to the raising and lowering of the reaping unit 7 without interfering. When the connecting arm 75 is lowered, the connecting arm 75 is lowered together with the reaping unit 7 by the urging force of the spring 77.

[0050]

The present invention is configured as described above and has the following effects. That is, in the lifting mechanism of the harvesting unit of the combine, the electric cylinder is disposed between the harvesting unit and the body frame to support the mowing unit. Since the mowing part was raised and lowered, the number of parts required for the mounting was increased, and an arrangement space for a hydraulic hose and the like was required for raising and lowering by hydraulic pressure. Abolishing the hydraulic device and reducing the size of the mowing unit lifting mechanism.
In addition, it is possible to increase the space behind the mowing frame.

According to a second aspect of the present invention, in the configuration in which the cutting portion protruding forward of the body of the combine is arranged, the rotation fulcrum of the cutting portion and the rotation fulcrum of the stock transfer device which also serves as the vertical conveyance device are the same. By arranging them on the axis, the arrangement of the mowing unit elevating mechanism and the vertical transport device on the side of the machine body can be simplified.

According to a third aspect of the present invention, a stopper is disposed on a lower surface of the stock feeder, and the stopper is protruded toward the reaping frame so that the stock feeder is raised when the cutting unit is raised. With this configuration, when the mowing unit is moved up and down, the stock carrier is also lifted, so that the stock carrier is not obstructed when traveling on the road, etc., and there is no need to raise the stock carrier. Therefore, the structure is simple with only the rod-shaped stopper, there is no interference, and the raising operation of the stock transfer device is not required at the time of lifting.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine equipped with a raising device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a plan view of the raising device according to the first embodiment of the present invention.

FIG. 5 is a front view of the same.

FIG. 6 is a plan view of a raising device according to a second embodiment of the present invention.

FIG. 7 is a front view of the same.

FIG. 8 is a plan view of a raising device according to a third embodiment of the present invention.

FIG. 9 is a plan view of a raising device according to a fourth embodiment of the present invention.

FIG. 10 is a side view of the electric cylinder and its periphery.

FIG. 11 is a plan view of the same.

FIG. 12 is a bottom view showing the mounting configuration of the electric cylinder and the connection pipe.

FIG. 13 is a partial side view of the combine showing the rotation configuration of the stock transfer apparatus.

FIG. 14 is an enlarged view of FIG. 13;

FIG. 15 is a plan view, partly in section, of the motor showing the configuration of power transmission of the motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling device 7 Cutting part 12 Stock transfer device 13 Head transfer device 26 Rotating fulcrum shaft 27 Electric cylinder 40 Raising device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuichi Shinfuku 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Junya Sakata 1st, Chayacho, Kita-ku, Osaka, Osaka No. 32 Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Makoto Yabuki 428 Enami, Okayama-shi In-house company (72) Inventor Kojiro Shimada 428 Enami, Okayama-shi In-house F-term (reference) 2B076 AA03 BA07 CA04 CA11 2B084 AA01 AC01 BD11 BD21 2B382 GA09 GC02 GC03 GC04 HB02 HE01 HF02 HF21

Claims (3)

[Claims] 1. A combine harvester, wherein an electric cylinder is arranged between the harvester and the body frame to support the harvester in the lifting mechanism of the combine harvester. 2. A configuration in which a mowing portion protruding forward of the body of the combine is arranged, wherein the pivot of the mowing portion and the pivot of the stock feeder which also serves as the vertical carrier are arranged on the same axis. Combine harvesting unit characterized by the following. 3. A stopper is disposed on a lower surface of the stock transfer device, and the stopper is protruded toward the cutting frame, so that the stock transfer device is also raised when the cutting unit is raised. The harvester of the combine according to claim 2.