JPH0516901Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for preventing jamming of a stock conveyor chain in a harvester.

(Prior art) In a maize harvester, after harvesting the base of the maize plant by rotating a pair of left and right rotary cutting blades,
A pair of left and right stock transport chains hold the stock heads and transport them rearward, where they are shredded by a shredding device.

In this type of maize harvester, a front sprocket, an intermediate sprocket, and a rear sprocket are arranged in pairs on the left and right, and the left and right stock conveyor chains are wound between these three sprockets, and between the left and right front and intermediate sprockets. The left and right stock conveyor chains are configured to spread forward and be substantially parallel between the intermediate and rear sprockets, and a rotary cutting blade body is provided below the intermediate sprocket so as to be integrally rotatable.

(Problem to be solved by the invention) In this way, since the stock conveyor chain is wound around the three-point sprocket, the part where it engages with the intermediate sprocket only engages with about three teeth of the intermediate sprocket. Compared to other front and rear sprockets, the number of teeth that can engage is extremely small. Therefore, when cutting at a low cutting height, the soil, stones, etc. picked up by the cutting blade are
Grass etc. got stuck between the intermediate sprocket and the stock conveyor chain, and the stock base conveyor chain sometimes rose and came off.

In view of these conventional problems, the present invention was developed by
It was provided for the purpose of preventing dirt, stones, etc. from getting stuck.

(Means for Solving the Problem) As a specific means for this purpose, the present invention arranges a pair of left and right front sprockets 37, an intermediate sprocket 38, and a rear sprocket 39, and connects these three sprockets 37, 38, and 39. The stock conveyor chains 32 are arranged so that the front and left sprockets 38 and 39 are spread out in the front, and the middle and rear sprockets 38 and 39 are approximately parallel to each other.
A rotary cutting blade body 33 is installed below the intermediate sprocket 38 so as to rotate in the same direction as the intermediate sprocket 38, and the stock of the harvested material cut by the rotary cutting blade 33 is connected to a pair of left and right stock posts. Conveyance chain 32
In a harvester that is held by a holder and conveyed backward, an intermediate sprocket 38 and a stock transfer chain 32 are used.
It is arranged at substantially the same height as the intermediate sprocket 38 at the beginning of occlusion with the intermediate sprocket 38, one side runs close to the outer periphery of the intermediate sprocket 38, the other side runs close to the stock conveyor chain 32, and further A substantially triangular foreign matter removal plate 65 whose other side is a guide surface 65a that is inclined rearward in a direction away from the stock conveyor chain 32 is provided so that at least a portion thereof overlaps with the rotary cutting blade body 33. It is something that

(Embodiment) Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIG. 4, 1 is a tractor, front wheels 2,
Rear wheel 3, bonnet 4, driver's seat 5, steering wheel 6,
It has a rear wheel fender 7, etc. Reference numeral 8 denotes a tapping wagon, which is mounted on the bonnet 4 via a mounting frame 9, and this wagon 8 can be dumped around a pivot shaft 11 by a cylinder 10.

Reference numeral 12 denotes a maize harvester, which, as shown in FIG.
It is attached via 6. The shredding device 14 shreds the maize that is harvested and transported by the reaping and transporting device 13, and comprises a flywheel 18 that rotates around a front-rear axis within a casing 17, and is equipped with a cutter, a blade plate 19, etc. The shredded maize pieces are fed into the wagon 8 from a chute 15 by means of a vane plate 19.

The chute 15 is rotatably fitted into a cylindrical body 20 fixed to the casing 17.
A handle 21 provided on the rear wheel fender 7 can be rotated around the vertical axis according to the loading status of maize pieces in the wagon 8. That is, shoot 1
A large-diameter gear 22 is concentrically fixed to the base of 5, and a small-diameter gear 2 engages with this large-diameter gear 22.
3 is supported by a gear case 25 placed on a bracket 24 fixed to the casing 17. A bevel gear mechanism 27 that interlocks an input shaft 26 and a small diameter gear 23 is built into the gear case 25, and the input shaft 26 is connected to a handle held by a bearing 29 on the rear wheel fender 7 via a universal joint shaft 28. It is connected to a shaft 30. The handle shaft 30 is only rotatable, and is provided with a handle 21.

As shown in FIG. 3, the reaping and conveying device 13 includes a pair of left and right dividers 31, a stock conveying chain 32, a rotary cutting blade body 33, a feed drum 34, a cover 35, etc., which are arranged forward from the casing 17. They are each supported by a pair of left and right frames 36 that protrude.

The stock conveyor chain 32 is connected to the front sprocket 3
7. Middle sprocket 38, rear sprocket 3
It is wrapped around 9. The pair of left and right stock conveyor chains 32 have front and intermediate sprockets 37 and 38.
The sprockets 38 and 39 are configured to be spread out in the front and substantially parallel between the intermediate and rear sprockets 38 and 39, and each stock conveyor chain 32 is covered with a cover 35. As shown in FIGS. 1 and 2, the stock conveyor chain 32 is provided with L-shaped links 40 corresponding to the top and bottom at every few pitches, and a rubber gearing belt 41 is attached via the links 40. It is being The left and right gearing belts 41 are designed such that their peaks and valleys engage with each other.

The front sprocket 37 has an arm 43 pivoted to the frame 36 by a pivot 42, as shown in FIG.
It is rotatably supported by a bearing case 44 at the tip and urged forward by a tension applying mechanism 45. The tension applying mechanism 45 is composed of a tension rod 46, spring receivers 47, 48, and a spring 49. Rod 46 is the bolt 5 for the fulcrum pin
0 to the bracket 51 of the bearing case 44, and is inserted into the mounting base 52.
One spring receiver 47 of the pair of spring receivers 47 and 48
is locked to the rod 46 with a nut 53, and the other spring receiver 48 is in contact with a spherical receiver 54 of a mounting base 52, with a spring 49 interposed between these spring receivers 47 and 48.

The mounting base 52 is attached to the frame 24 as shown in FIG.
A support shaft 61 is rotatably supported via a bracket 56 and a bearing case 60, which are vertically adjustable and attached to the mounting base 52 with bolts 55. As shown in FIG. 2, the support shaft 61 has an intermediate sprocket 38 and a cutting blade body 33 located below it. The cutting blade body 33 is star-shaped,
The pair of left and right cutting blade bodies 33 are arranged to overlap and slide vertically. The rear sprocket 39 is attached to the drive shaft 62 together with the feed drum 34, and is driven from the upper transmission case 63 side.

Front sprocket 37 and stock conveyor chain 32
Approximately triangular foreign body exclusion plates 64 and 65 are provided at the beginning of occlusion between the sprocket 38 and the intermediate sprocket 38 and the stock transfer chain 32.
7 and 38 and are provided in close proximity to the stock transport chain 32, respectively. Foreign matter exclusion plates 64, 65
is at the same height as the sprockets 37, 38 and the stock conveyor chain 32, the foreign matter removal plate 64 is attached to the bracket 67 with bolts 66 so that its angle can be adjusted, and the bracket 67 is in contact with the outer periphery of the bearing case 44. It is fixed with a bolt 50 for the fulcrum pin of the tension rod 46. The foreign matter removal plate 65 has one side running close to the intermediate sprocket 38 , another side running close to the base conveyance chain 32 , and another side facing backward and away from the base conveyance chain 32 . The guide surface 65a has an inclined shape and serves as a guide surface 65a for guiding foreign objects, and is attached to the bracket 68 so that at least a portion of the guide surface 65a overlaps the rotary cutting blade 33 vertically. The bracket 68 is fastened together to the mounting base 52 by bolts 55. Further, one side of the exclusion plate 64 also serves as a guide surface 65a for guiding foreign matter.

Note that 69 is a guide rod for pushing the upper side of the maize forward to make the maize fall forward.

In the above configuration, when harvesting maize, the drive shaft 62 moves the pair of left and right plant conveyance chains 32 forward in the direction of arrow A in FIG. After cutting the maize stock head with the cutting blade body 33, the stock head is held from left and right by a pair of right and left stock head conveying chains 32, especially its gear ring belt 41, and conveyed rearward. At this time, the upper part of the maize is pushed forward by the guide rod 69, so that the maize falls down and starts from the shredding device 14 from the stock side.
and is shredded by the shredding device 14.

The stock transport chain 32 rotates in the direction of arrow A, but at this time, dirt, stones, grass, etc.
2, they will be pulled toward the beginning of engagement with the front sprocket 37 or the intermediate sprocket 38 and will be bitten, but since there are foreign object removal plates 64 and 65 there, These foreign matter removal plates 64 and 65 remove them in the direction away from the stock transport chain 32 as indicated by arrow B, thereby preventing biting, and preventing the stock transport chain 32 from being bitten. 32 can be prevented from coming off.

Also, the foreign matter removal plate 65 on the intermediate sprocket 38 side
is partially overlapped with the rotary cutting blade body 33, so even when the rotary cutting blade body 33 picks up dirt, stones, etc., the removal plate 65 can prevent the removal plate 65 from getting caught.

Note that the same method can be implemented in harvesters other than the maize harvester 12.

(Effect of the invention) According to the invention, the triangular foreign matter removal plate 65 is arranged at approximately the same height as the intermediate sprocket 38 at the beginning of engagement between the intermediate sprocket 38 and the stock conveyor chain 32, and the foreign matter One side of the exclusion plate 65 runs close to the intermediate sprocket 38, the other side runs close to the stock conveyor chain 32, and another side faces backward in a direction away from the stock conveyor chain 32. Since the guide surface 65a is inclined and at least a portion of the foreign matter removal plate 65 is overlapped with the rotary cutting blade body 33, the front sprocket 3
7 to the foreign matter removal plate 65, dirt, stones, grass, etc. caught in the stock conveyance chain 32 are moved away from the stock conveyance chain 32 by the guide surface 65a of the foreign matter removal plate 65. The dirt, stones, grass, etc. that are guided and removed and picked up by the rotary cutting blade 33 fly toward the beginning of the engagement between the intermediate sprocket 38 and the stock conveyor chain 32, but the foreign objects are removed. The foreign matter removal plate 65 of the present invention makes contact with the lower surface of the plate 65 and is removed in the direction of rotation by the rotation of the rotary cutting blade 33. Therefore, the foreign matter removal plate 65 of the present invention removes dirt from the front and dirt from below. etc. can also be effectively eliminated.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a cross-sectional plan view of the main part, Fig. 2 is a cross-sectional rear view of the same, Fig. 3 is a plan view of the maize harvester, and Fig. 4 is a diagram showing the maize harvester mounted on a tractor. It is a side view of a maize harvester. 13... Reaping conveyance device, 32... stock conveyor chain, 33... cutting blade body, 37... front sprocket, 38... intermediate sprocket, 39... rear sprocket, 41... gearing belt, 6
4,65... Foreign matter exclusion plate.

Claims (1)

[Scope of claims for utility model registration] Front sprocket 37 and intermediate sprocket 38
A pair of left and right rear sprockets 39 are arranged, and between these three sprockets 37, 38, 39, a front spread shape is formed between left and right front/intermediate sprockets 38, 39, and an intermediate/rear sprocket 38,
A rotary cutting blade body 33 is provided below the intermediate sprocket 38 so as to rotate in the same direction as the intermediate sprocket 38. In a harvester in which the stock of the harvested material that has been harvested is held by a pair of right and left stock transport chains 32 and transported rearward, an intermediate sprocket 38 and a stock transport chain 32 are used.
It is arranged at substantially the same height as the intermediate sprocket 38 at the beginning of occlusion with the intermediate sprocket 38, one side runs close to the outer periphery of the intermediate sprocket 38, the other side runs close to the stock conveyor chain 32, and further A substantially triangular foreign matter removal plate 65 whose other side is a guide surface 65a that is inclined rearward in a direction away from the stock conveyor chain 32 is provided so that at least a portion thereof overlaps with the rotary cutting blade body 33. A device for preventing jamming of a stock conveyor chain in a harvester.