JPH041769Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a general-purpose combine harvester, more specifically, it consists of a reaping device equipped with a platform, a raking reel, a cutting blade, and a raking drum at the front of the machine. Regarding general-purpose combine harvesters.

(Prior Art) Conventionally, this type of general-purpose combine harvester has a threshing device mounted on the upper part of a machine body equipped with a traveling device, and a reaping device is installed in the front part of the machine body, and the grain culm in the field is harvested with the reaping device. A device in which the harvested grain culm is transported to the threshing device for threshing processing is already widely known.

Accordingly, the reaping device rotatably supports a raking drum between side walls provided on both sides in the width direction of the platform, and also rotatably supports a raking reel at an upper part of the platform in the front part of the raking drum. On the other hand, a cutting blade is provided in the front part of the raking drum at a position below the raking reel, and the cutting blade cuts the grain culm raked by the raking reel. The grain is conveyed and supplied from the platform to the threshing device by a raking drum.

(Problems to be Solved by the Invention) By the way, when harvesting grain culms using the above-mentioned reaping device, one side wall of the both side walls provided on the platform should be placed on the side of the field where the grain culms are not being harvested, and the other side The grain culms that have been raked into the platform by the raking reel are reaped by the cutting blades by positioning the side walls of the culms on the already-cut side of the grain culms. Grain culms may become stagnant in the form of a bridge on the upper part of the side wall located on the uncut side of the grain culm among both side walls of the platform. When the culm becomes clogged and stagnates, and the amount of stagnation exceeds a predetermined amount, the culm is fed all together from the platform to the conveyance path leading to the threshing device, and the grain culm becomes clogged within the conveyance path. There was something to celebrate.

Further, in the reaping device, grass dividing plates are attached to the front portions of both side walls of the platform, and each of the grass dividing plates divides grain culms in the field and guides them into the inside of the platform. However, since each of the above-mentioned weeding plates does not have a forcible pulling action on grain culms, it is not possible to exert a sufficient weeding action particularly on grain culms that are in a lodging or tangled state. First, there was a problem in that it adversely affected the ability of the scraping reel to scrape grain culms.

Therefore, the inventor of the present invention installed a forced weed pulling device that performs a forced pulling action on the grain culm on the side wall of the platform located outside the raking reel of the reaping device, so that the grain produced by the reaping device is During culm reaping work, the forcible weed pulling device quickly guides grain culms located on the side wall or grain culms that try to enter between the side wall and the raking reel to the platform side. , to prevent grain culms from clogging the platform, and even if the grain culms to be harvested are in a lodging or tangled state,
The idea was to correct the posture of the grain culm using the forcible weed pulling device to improve the reaping performance of the cutting blade and the raking performance of the raking reel.

However, when the forced weed pulling device is installed on the side wall of the platform, the power transmission system of the forced weed pulling device poses a problem. When driving the lifting device,
This requires many separate transmission parts, resulting in a very complicated structure.

The present invention was devised in view of the various problems mentioned above, and its purpose is to attach the forced weed pulling device to the side wall of the platform, and to transfer the rotational power of the forced weed pulling device to the forced weed cutting device. By taking out the raking drum of the platform located near the hoisting device, it is possible to simplify the power transmission system, prevent the grain culm from clogging the platform, and prevent the grain culm to be harvested from falling over. An object of the present invention is to provide a general-purpose combine harvester capable of correcting the posture of these grain culms even when the grain culms are in a tangled state or in a tangled state, thereby improving the reaping performance of the cutting blade and the raking performance of the raking reel. .

(Means for Solving the Problems) In the present invention, as shown in the embodiment of the drawings, a platform 51 and a scraping reel 5 are installed at the front of the machine body 1.
3, a cutting blade 54, and a raking drum 55.In the general-purpose combine harvester, a reaping device 5 having a cutting blade 54 and a raking drum 55 is provided. A forced weed pulling device 6 is provided which has a plurality of tines 61 which are inclined upwardly with respect to the front portion and which protrude upward and move back and forth. This feature is characterized by interlocking via interlocking means.

(Function) When reaping grain culms using the reaping device 5 of the combine harvester, the grain culms positioned on the side wall 51a of the platform 51 and the Grain culms that try to enter between the side wall 51a and the scraping reel 53 are quickly weeded and removed from the platform 5.
In other words, the stagnant grain culms are not fed into the platform 51 all at once, and clogging of the grain culms in the platform 51 is prevented. , Moreover, even if the grain culm to be harvested is in a lodging state or in a tangled state, the forcible weed pulling device 6
As a result, the posture of the grain culm is corrected, the grain culm receives a good and reliable raking action by the raking reel 53, and the reaping performance of the cutting blade 54 is accordingly improved.

Further, the rotational power of the forced weed pulling device 6 is taken out from the raking drum 55 disposed near the forced weed pulling device 6. Power transmission can be performed with a simple structure, and the scraping drum 5
It is possible to synchronize the rotational speed of the raking drum 5 with the rotation speed of the tines 61 provided in the forced weed pulling device 6. In other words, when the rotational speed of the raking drum 55 is changed, this raking Since the tines 61 can be rotated in accordance with the loading drum 55, the scraping action of the scraping drum 55 on the grain culm guided by the tines 61 can be performed satisfactorily.

(Example) A general-purpose combine harvester according to the present invention will be described below with reference to an example shown in the drawings.

FIG. 3 shows the overall structure of a general-purpose combine harvester, in which an engine 2 is mounted on the upper part of the machine body 1, a traveling device 3 is provided on both sides of the lower part, and a threshing device 4 having a handling barrel 41 on the upper part of the machine body 1. In addition, a reaping device 5 is provided at the front part of the machine body 1.

The reaping device 5 has a platform 51 having a pair of side walls 51a rising upward on both sides in the lateral direction of the grain movement, and a transport chamber 52 for the reaped grain culm extending from the platform 51 toward the threshing device 4 side. A scraping reel 53 is rotatably supported at an upper position on the front side of the platform 51, and a side wall 51 of the platform 51
A cutting blade 54 is supported at the bottom position between the spaces a and a raking drum 55 is rotatably supported at the bottom position behind the cutting blade 54. A chain conveyor 56 is provided to convey and supply grain culms to the threshing device 4 side.

In the general-purpose combine harvester as described above, as shown in FIGS. 1 to 3, the grain culm reaping operation is carried out on both side walls 51a of the platform 51 located on both sides of the scraping reel 53. One side wall 5 that is sometimes located on the uncut side of the grain culm
1a, in the embodiments shown in each figure, a forced weed pulling device 6 is provided on the left side wall 51a in the direction of travel, and is provided with a plurality of tines 61 that move back and forth while protruding above the side wall 51a. The weed pulling device 6 is inclined so that the rear side is higher than the front side, and is supported at an upper position on the outside side of the side wall 51a.

Interlocking means is interposed between the forcible weed pulling device 6 and the raking drum 55 of the platform 51, and this interlocking means causes the raking drum 55 to
This is done so that the rotational power is transmitted to the forcible weed pulling device 6.

Further, as is clear from FIGS. 1 and 4, the forcible weed pulling device 6 has two side plates 6 facing each other.
First and second rotary bodies 64 and 65 are rotatably supported on both front and rear sides of a pulling case 63 consisting of
6, and a plurality of tines 61 are swingably supported on this transmission chain 66 at equal intervals, while an inner part of the rotation locus of the transmission chain 66 is connected to the first rotating body 64 side. , each of the tines 61 at the intermediate portion of the circular locus of the chain 66.
two first and second guide bodies 67 and 68 that guide the lifting case 63 in a state where it projects upwardly from the lifting case 63;
and configure it.

In this way, as the transmission chain 66 rotates, the tines 61 are rotated to the front side of the lifting case 63, and when the base end of the tines 61 comes into contact with the first rotating body 64, Due to the contact with the first rotating body 64, the tines 61 are swung upward,
The first and second guide bodies 67 and 68 guide the tines 61 in a manner that they protrude above the lifting case 63, and when the tines 61 are guided in this protruding state, the tines 61 move the grain culm. are forcibly weeded, and each of the guide bodies 67, 68
After passing through, the tines 61 are swung and retracted inward of the lifting case 63.

As described above, when the forcible weed pulling device 6 is installed on the side wall 51a located on the uncut side of the grain culm among the both side walls 51a provided on the platform 51, the grain culm is ridge-shaped on the side wall 51a. Even if the grain culms run over or try to enter between the side wall 51a and the raking reel 53, these grain culms will be removed by the lifting case 6 of the forced weed pulling device 6.
3, the grass is quickly pulled up by the tines 61, which are rotated from the front side to the rear side, and gradually guided into the inside of the platform 51, and then removed from the platform 51. This makes it possible to prevent grain culms from clogging in the transfer chamber 52 leading to the threshing device 4.

Further, even if the grain culm to be harvested is in a lying down state or in a tangled state, the grain culm is loosened and raised by the tines 61, and its posture is corrected, and this grain culm is moved by the raking reel 53. The cutting blade 54 receives a good and reliable scraping action.
Reaping performance will also be improved.

In the general-purpose combine harvester shown in each of the figures above, both side walls 51 provided on the platform 51 are
A side wall 51a located on the already-cut side of the grain culm
A transmission mechanism for transmitting rotational power to the raking reel 53, the cutting blade 54, and the raking drum 55 is disposed inside the raking reel 53, the cutting blade 54, and the raking drum 55, and the transmission mechanism is interlocked and connected to the output side of the engine 2. The forced weed pulling device 6 is attached to the side wall 51a located on the mowing side, and interlocking means is interposed between the weed pulling device 6 and the raking drum 55. The rotational power of the raking drum 55 is transmitted to the forcible weed pulling device 6.

That is, as shown in FIG. 5, the first gear G1 is provided at the shaft end of the raking reel 53 on the side where the grain culm has already been cut, and the first gear G1 is provided at the shaft end of the raking drum 55 on the same side as the gear G1. , a second gear G2 having a limiter L is provided, and a first pulley P1 is provided on the grain culm already-cut side of the cutting blade 54 via a cutting blade clutch CH.

The first shaft R1 is connected to the reaping clutch CK of the reaping device 5 provided on the output side of the engine 2, and the first shaft R1 is connected to the chain conveyor 56.
A second shaft R2 is supported parallel to the first shaft R1, and third and fourth gears G are mounted on each of the shafts R1 and R2, respectively.
3 and G4, and by winding the first chain C1 between the respective gears G3 and G4, the first shaft R1
The rotational power is transmitted from the drum to the second shaft R2, while the scraping drum 55 is rotated on the second shaft R2.
A fifth gear G5 is provided at a portion facing the second gear G2, and a second chain C2 is wound between the second and fifth gears G2 and G5, so that the scraping from the second shaft R2 is This is done so that rotational power is transmitted to the drum 55 side.

Also, on the second axis R2, the first shaft on the cutting blade 54 side
A second pulley P2 is provided at a location facing the pulley P1, and a first belt B1 is wound between each of the pulleys P1 and P2. This is done so that power is transmitted to the cutting blade 54 side.

Furthermore, a third axis R3 is parallel to the second axis R2.
, and third and fourth pulleys P3 and P3 are provided at mutually opposing portions of the respective shafts R2 and R3, respectively.
4, and by passing the second belt B2 between each of these pulleys P3 and P4, the second shaft R2
A fourth shaft R4 is supported in parallel with the third shaft R3, and sixth and seventh gears are connected to the shafts R3 and R4 in opposition to each other. G6 and G7 are provided, and a third chain C3 is wound between each gear G6 and G7,
An eighth gear G8 is provided at the shaft end of the fourth shaft R4 at a portion facing the first gear G1 provided on the scraping reel 53 side.
By providing a fourth chain C4 between each gear G1 and G8, the rotational power of the second shaft R2 is transferred to the scraping reel 53 via the third shaft R3 and the fourth shaft R4. It is done as if it were communicated to the person.

In addition, the raking drum 55 of the reaping device 5 and the forced weed pulling device are installed on the opposite side of the transmission mechanism to each part of the reaping device 5, that is, on the part facing the uncut side of the grain culm during the grain culm reaping operation. 6 is provided.

That is, as is clear from FIGS. 2 and 5, a ninth gear G9 is provided on the wall of the raking drum 55 on the uncut side of the grain culm, and a ninth gear G9 is provided outwardly in parallel with the axis of the raking drum 55. The ninth gear G9 is attached to the PTO shaft R5 by supporting the PTO shaft R5 protruding toward the PTO shaft R5.
A tenth gear G10 is provided which is always in mesh with the gear.

An 11th gear G11 is provided at the outer end of the PTO shaft R5, and the forced weed pulling device 6
A twelfth gear G12 is provided on the support shaft R6 of the second rotary body 65, which is provided opposite to the eleventh gear G11, and a fifth chain C is provided between each of the gears G11 and G12.
5, the rotational power of the raking drum 55 is transmitted to the transmission chain 66 of the forced weed pulling device 6, and as the chain 66 rotates, the tines 61 are projected upward. This is done by moving it from the front side to the rear side.

As described above, by extracting the rotational power of the forced weed pulling device 6 from the raking drum 55 disposed near the forced weed pulling device 6, the structure of the interlocking device can be simplified. Furthermore, it is possible to synchronize the rotational speed of the raking drum 55 and the rotation speed of the tines 61 provided in the forced weed pulling device 6, so that the rotational speed of the raking drum 55 can be changed. In this case, this scraping drum 5
5, the tines 61 can be rotated according to the rotation of the tine 61, and the scraping action of the scraping drum 55 on the grain culm guided by the tines 61 can be performed satisfactorily.

Further, the scraping drum 55 is supported on both side walls 51a of the platform 51 so as to be adjustable in the vertical direction. This also makes it possible to transmit rotational power from the raking drum 55 to the forced weed pulling device 6.

That is, as clearly shown in FIGS. 6 and 7, a fixed shaft RK is provided at the core of the scraping drum 55 via a bearing 11, and the fixed shaft RK is connected to the platform 51 via a support member 12. While being supported by the drum hanger 13 that is in contact with the side wall 51a,
By fixing this hanger 13 to the side wall 51a with a plurality of fixing bolts 14, the fixed shaft RK is fixed to the side wall 51a via the hanger 13, and the scraping drum 55 is fixed to the fixed shaft RK. It is rotatably supported via the bearing 11.

Further, the support member 12 in the side wall 51a
A cylindrical shaft 15 for inserting and supporting the PTO shaft R5 is provided near the side wall 5 of the cylindrical shaft 15.
By bringing the flange 15a formed on the cylindrical shaft 15 into contact with the side wall 51a and screwing a plurality of fixing bolts 16 between the flange 15a and the side wall 51a, the PTO shaft can be fixed via the cylindrical shaft 15. R5 is supported by the side wall 51a.

and the fixed axis RK in the side wall 51a.
around the fixed shaft RK, that is, the scraping drum 5.
A substantially trapezoidal first elongated hole 17 that allows vertical movement adjustment of the hanger 13 is formed, and each of the fixing bolts 14 for fixing the hanger 13 is inserted through a portion of the side wall 51a facing the hanger 13. Each fixing bolt 14, that is, the hanger 13
A plurality of second elongated holes 18 extending in the vertical direction are formed to allow vertical adjustment of the flange 15 of the cylinder shaft 15.
The flange portion 15a is attached to the side wall 51a that a is in contact with.
A third elongated hole 19 extending in the vertical direction is formed at the insertion portion of each fixing bolt 16 for fixing the cylinder shaft 15 to allow vertical adjustment of each fixing bolt 16, that is, the cylindrical shaft 15.

Further, as shown in FIG. 8, a support rod 20 is provided extending rearward from the rear end side of the pulling case 63 in the forced weed pulling device 6, and a support rod 20 is provided at the longitudinal center of the support rod 20. A bracket 21 having a U-shaped cross section is integrally fixed to the part, and the cylindrical shaft 15 is attached to one intermediate wall of the bracket 21.
A fourth elongated hole 22 is formed in which the cylinder shaft 15 can be adjusted in the vertical direction, while a pair of fifth holes are formed in the other opposing wall portions of the bracket 21. A long hole 23 is provided.

A bulging portion 15b bulging outward in the radial direction is provided on the outer side of the cylindrical shaft 15 at the insertion portion into the bracket 21, and two through holes are provided in the bulging portion 15b in opposing directions. Holes 15c are formed, each through hole 15c is made to face each of the fifth elongated holes 23 provided in the bracket 21, and a fixing bolt 24 is screwed between the fifth elongated hole 23 and the through hole 15c. As a result, the cylinder shaft 15 is supported by the bracket 21 so as to be vertically adjustable.

In this way, each side wall 51 of the scraping drum 55
When adjusting the movement in the vertical direction with respect to a, the fixing bolt 14 between the hanger 13 and the side wall 51a is loosened, and the flange 15a of the cylinder shaft 15 and the side wall 51a are loosened.
Loosen the fixing bolt 16 between the hangers 13 and
By adjusting the movement of and the collar portion 15a within the range of the second and third elongated holes 18 and 19, respectively, the scraping drum 55 is adjusted to move in the vertical direction within the range of the first elongated hole 17. At this time, each of the fixing bolts 23 screwed between the cylindrical shaft 15 and the bracket 21 on the side of the forced weed pulling device 6 is loosened, and the cylindrical shaft 15 is removed from the bracket 21 formed on the bracket 21. By vertically adjusting within the range of the fourth and fifth long holes 22 and 23, only the raking drum 55 can be adjusted vertically with respect to the side wall 51a without vertically moving the forced weed pulling device 6. It is eggplant.

Therefore, the ninth gear G9 is provided on the side wall of the raking drum 55 on the uncut side of the grain culm, and the
The PTO shaft R5 is provided with the 10th gear G10 that meshes with the 9th gear G9 at its inner shaft end, and the 11th gear G11 at its outer shaft end. The fifth chain C5 is wound between the sixth shaft R6 of the forced weed pulling device 6 and the twelfth gear G12.

Further, a tension gear TG is swingably supported via an arm A at an intermediate portion in the rotation direction of the fifth chain C5, and a spring SP is interposed between the arm A and the side wall 51a. The tension gear TG constantly urges the fifth chain C5 in the tension direction, and by doing so, the scraping drum 55 is moved as described above.
No matter what position the side wall 51a is adjusted to in the vertical direction, the fifth chain C5 is always maintained in tension by the tension gear TG, and the transmission chain 66 of the forced weeding device 6 is connected via this chain C5. Power is reliably transmitted to both sides.

As explained above, among the both side walls 51a provided on the platform 51 of the reaping device 5, the side wall 51a located on the already-cut side of the grain culm is provided with rotational power for the raking reel 53, the cutting blade 54, and the raking drum 55. When disposing a transmission mechanism for transmitting the force and disposing the transmission mechanism of the forcible weed pulling device 6 on the side wall 51a located on the uncut side of the grain culm, in particular, the side wall located on the uncut side of the grain culm. 51a does not protrude or bulge out significantly, and when the grain culm is reaped by the reaping device 5, the contact range between the uncut side wall 51a and the grain culm can be reduced, which is advantageous.

Furthermore, by using the rotational power of the raking drum 55 to rotationally drive the forcible weed pulling device 6, the structure of the weed pulling device 6 is reduced compared to a structure in which the weed pulling device 6 is directly transmitted from the engine 2 side. This can be significantly simplified, and by extracting the rotational power of the forcible weed pulling device 6 from the raking drum 55 side, the limiter L provided on the raking drum 55 can be utilized.

In the above embodiment, the forcible weed pulling device 6 is installed on the platform 5 of the reaping device 5.
Although the forcible weed pulling device 6 is installed only on the side wall 51a located on the uncut side of the grain culm among the both side walls 51a of the platform 51, it is also possible to install the forced weed pulling device 6 on each side wall 51a of the platform 51. .

In the embodiment shown in FIGS. 1 and 2, of the both side walls 51a of the platform 51, the side wall 51a on the side where the forced weed pulling device 6 is not provided
In this case, a grass dividing plate 51b is directly attached to the front part of the side wall 51a, and a grass dividing plate 51b is attached directly to the front part of the forced grass pulling device 6 on the side wall 51a on the side where the forced grass pulling device 6 is attached. A similar grass dividing board 51b is provided.

Grass dividing plate 51 provided on the side of the forced grass pulling device 6
b is a support rod 51c extending from the fuselage 1 side;
and a mounting rod 51d extending from the lifting case 63 of the forcible weed pulling device 6.

(Effects of the Invention) As explained above, in the general-purpose combine harvester according to the present invention, the side wall 51a of the platform 51 located on the outside of the scraping reel 53 provided in the reaping device 5 faces in the front-rear direction, and the rear side is the front side. A plurality of tines 6 that are inclined to be higher than the front side and move in the front and rear direction while protruding upward.
1, a forced weed pulling device 6 is provided, and
Since this forced weed pulling device 6 is interlocked with the raking drum 55 provided in the reaping device 5 via the interlocking means, when the reaping device 5 performs a grain culm reaping operation, the platform 51 is Grain culms located on the side wall 51a and grain culms that are about to enter between the side wall 51a and the raking reel 53 are quickly weeded out by the tines 61 of the forced weeding pulling device 6. can be guided into said platform 51 and thus
This eliminates the need to supply grain culms all at once to the conveyance path from the grain culm to the threshing device, making it possible to reliably prevent clogging of the grain culms in the conveyance path. Even when the grain culm is in a lodging state or a tangled state, the posture of the grain culm is corrected by the forcible weed pulling device 6, and a good and reliable raking action is applied to the grain culm by the raking reel 53. With this, the cutting blade 54 can be
Therefore, the reaping performance can also be improved.

Further, the forced weed pulling device 6 and the raking drum 55 disposed near the forced weed pulling device 6
Since the interlocking means is interposed between the raking drum 55 and the rotational power of the forced weed pulling device 6, the forced weed pulling device 6
power can be transmitted with a simple structure, and the rotation speed of the raking drum 55 and the rotation speed of the tines 61 provided in the forced weed pulling device 6 can be synchronized, In other words, when the rotational speed of the scraping drum 55 is changed, the tines 61 can be rotated in accordance with the scraping drum 55, and the grain culm guided by the tines 61 can be The scraping drum 5
Therefore, the scraping action described in No. 5 could be performed satisfactorily.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the main parts of a general-purpose combine harvester according to the present invention, Figure 2 is an enlarged side view of the same, Figure 3 is a plan view showing the overall structure of the combine, and Figure 4 is a forced weed pulling device. FIG. 5 is a diagram showing the power transmission system to the forced weed pulling device, and FIGS. 6 to 8 show the supporting structure of the raking drum and the forced weed pulling device to the platform side wall, respectively. It is a drawing. DESCRIPTION OF SYMBOLS 1... Airframe, 5... Reaping device, 51... Platform, 51a... Side wall, 53... Scraping reel, 54... Cutting blade, 55... Scraping drum, 6...
Forced weed pulling device, 61...tine.

Claims (1)

[Scope of utility model registration request] In a general-purpose combine harvester, a reaping device 5 including a platform 51, a raking reel 53, a cutting blade 54, and a raking drum 55 is provided at the front of the machine body 1. A forced weed pulling device 6 is provided on the side wall 51a of the platform 51, and has a plurality of tines 61 which face in the front-rear direction, the rear part of which is inclined upwardly with respect to the front part, and which protrudes upward and moves back and forth.
A general-purpose combine harvester characterized in that the forced weed pulling device 6 is interlocked with the raking drum 55 via interlocking means.