JPH0125543Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a beet harvester.

Conventionally, some beet harvesters are equipped with a rotary bucket conveyor at the rear of a truck for raising the harvested beets to a position above a storage tank. The bucket conveyor of this beet harvester has an open inner peripheral surface of each partitioned bucket, receives beets from the open portion, and rotates in a vertical plane.

By the way, when the above-mentioned bucket conveyor transports and raises the beets, in the length section that is the latter half of the ascending path of the beets, the open part of each bucket is oriented diagonally downward, and the beets fall. Conventionally, a cover plate is provided inside the length section along the inner circumference of the conveyor. This cover plate faces the open part of each bucket and covers the open part, and is fixed to the trolley.

However, when digging beets, large stones may be dug up along with the beets and enter the bucket conveyor, or because the cover plate is fixed in the harvester, large stones may be dug up together with the beets and enter the bucket conveyor. There were times when stones hit the cover plate and got stuck, causing the bucket conveyor to stop and interrupting the harvesting process. To solve this problem, the cover plate should be supported by the cart so that it can be moved in the direction away from the bucket conveyor, so that the cover plate can escape when hit by stones. However, when the cover plate is structured so that it moves in parallel as a whole, the gap between the cover plate and the bucket that does not contain stones opens wide, causing the beets to escape from inside the bucket and disrupting the original function of the cover plate. There is a risk of damage.

The technical challenge of this invention is to separate the cover plate from the bucket conveyor only in the area around the area where the right side is in contact with it, and to allow the beets to escape from the bucket conveyor. To provide a beet harvester capable of smoothly continuing harvesting work without stopping a bucket conveyor due to stones.

The structure of the present invention to achieve the above technical problem is that an upper link and a lower link are pivotally connected to the upper and lower parts of the back surface of the cover plate, respectively, and these upper links and lower links are respectively extended to the middle part of the back surface of the cover plate. is pivotally connected to a stay extending from the frame on the trolley,
An operating rod extending inward of the bucket conveyor was connected to both links, and each of the operating rods was supported by a frame on the truck so as to be able to slide in the axial direction, and was biased toward the back side of the cover plate via a spring. It is something.

According to the configuration of the present invention, when stones that have been excavated together with the beets and entered the bucket of the bucket conveyor come into contact with the lower part of the cover plate, the lower link moves and the operating rod is activated. Due to the sliding movement, the lower part of the cover plate moves away from the bucket conveyor and escapes, and the stone rises due to the rotation of the bucket conveyor and the part of the cover plate that the stone is in contact with moves upward, causing the stone to move upward. As it moves, the lower part of the cover plate is biased by a spring and actuating rod and approaches the bucket conveyor, while the upper part of the cover plate moves away from the bucket conveyor by the action of the upper link and actuating rod and escapes. Therefore, the cover plate can be released from the bucket conveyor only in the area around the area where the stones are in contact with it, preventing the beets from escaping from the bucket and without stopping the bucket conveyor due to the excavated stones. Harvest work can continue smoothly.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the beet harvester A of this embodiment performs harvesting work while being towed by a tractor T.
1, the excavated beets were sent to a rotary bucket conveyor b via a pair of upper and lower inclined conveyors 12a and 12b and a horizontal conveyor 13, and the beets were placed on a cart a by the bucket conveyor b. Raise it to a position above the storage tank c,
The beets are sent forward by the rear feed conveyor 14 and dropped into the storage tank c to be stored therein.

The bucket conveyor b is provided at the rear of the cart a, and is driven to rotate in the direction of the arrow f as shown in FIG. A cover plate d is provided inside the length section of the bucket conveyor b, which is the latter half of the ascending path of the beats.

The cover plate d is for preventing the beets from falling from the bucket conveyor b in the _above -mentioned length section, and is a frame e that is curved along the inner circumference of the bucket conveyor b and stands up on the cart a. is supported by The support structure of the cover plate d is such that when the stones excavated together with the beats are carried by the bucket conveyor b and rise and come into contact with the cover plate d, the cover plate d moves away from the bucket conveyor b. It is said that the structure is such that it is possible to escape by doing so.

That is, as shown in FIGS. 3 and 4, a pair of left and right upper links 1 are provided at the upper and lower back surfaces of the cover plate d, respectively.
a, 1b and lower links 2a, 2b, and these upper links 1a, 1b and lower links 2a,
2b to the frame e on the truck a, the stay 3a,
3b and actuating rods 4a, 4b, and 5a.

A downwardly extending elongated hole 10a is provided in the pivot portion 10 of the upper links 1a, 1b in the cover plate d, and the ends of the upper links 1a, 1b are slidably guided in this elongated hole 10a.

Upper links 1a, 1b and lower links 2a, 2
b is extended to the middle part of the back of the cover plate d, and the stay 3
It is pivotally connected to a and 3b.

The stays 3a, 3b are fixed to the frame a via brackets 6a, 6b and extend horizontally, and together with the actuating rods 4a, 4b, 5a, the upper link 1
a, 1b and lower links 2a, 2b, and serves as a swing fulcrum for both links 1a, 1b, 2a, 2b.

The actuating rods 4a, 4b, 5a are connected to the upper links 1a, 1b, that is, the actuating rods 4a, 4b are connected to the ends of the links 1a, 1b and curved to extend toward the frame e side, and are attached to the brackets 6a, 6b. It is supported so that it can slide in the axial direction. Further, the actuating rod 5a on the lower links 2a, 2b side extends approximately horizontally toward the frame e side, which is connected to the lower part of the links 2a, 2b via a horizontal support rod 5b, and is attached to a bracket 7 fixed to the frame e. It is supported so that it can slide in the axial direction.

Springs 8 and 9 are attached to the outer peripheries of the actuating rods 4a, 4b, and 5a, respectively, and the actuating rods 4a, 4b, and 5a are urged toward the back side of the cover plate d by the springs 8 and 9. It is.

The beet harvester A of this embodiment as described above is
When the stones excavated together with the beets are carried by the bucket conveyor b and rise and come into contact with the lower part of the cover plate d, the external force from the stones causes the lower links 2a and 2b on the back of the cover plate d to move as shown in Fig. 5. As shown, stay 3a,
Link operation is performed to the frame e side using the pivot point with 3b as a fulcrum. This linking action of the lower links 2a, 2b causes the actuating rod 5a to slide against the spring 9 toward the frame e. On the other hand, the upper link 1a,
1b is a long hole 1 at the pivot joint 10 on the back side of the cover plate d.
0a, the actuating rod 4a,
4b hardly slides.

Therefore, only the lower part of the cover plate d that is in contact with the stone moves away from the bucket conveyor b and escapes.

The stones rise due to the rotation of bucket conveyor b,
When the part of the cover plate d that is in contact with the stone moves upward, the lower links 2a,
2b performs a link operation in the direction of returning to its original position,
The elastic force of the spring 9 acts on the lower back of the cover plate d through the links 2a, 2b and the actuating rod 5a,
While the lower part of the cover plate d approaches the bucket conveyor b, the upper links 1a, 1b and the operating rods 4a,
4b respectively operate. That is, when the stone comes into contact with the upper part of the cover plate d, the upper links 1a and 1b move toward the frame e using the pivot points with the stays 3a and 3b as fulcrums, as shown in FIG. 4a and 4b slide against the spring 8.

Due to the operation of the links 1a, 1b, 2a, 2b and the actuating rods 4a, 4b, 5a, the cover plate d moves away from the bucket conveyor b only at the upper part where the stones come into contact and escapes. It is.

Therefore, as described above, the cover plate d follows the rise of the stones and escapes from the bucket conveyor b only at the part where it contacts the stones, and remains close to the bucket conveyor b in other parts. Therefore, the rotation of the bucket conveyor b continues smoothly without causing the beats to escape from the bucket conveyor b.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the beet harvester of the present invention, Fig. 2 is a rear view of the same, Fig. 3 is a side view showing an enlarged support structure of the cover plate, Fig. 4 is a perspective view of the same, 5 and 6 are explanatory views of the operation of the cover plate. In the figure, A...Beet harvester, a...Dolly, b...Bucket conveyor, c...Accommodation tank, d...Cover plate, e...Frame, 1a, 1b
...Top link, 2a, 2b...Bottom link, 3
a, 3b... stay, 4a, 4b, 5a... operating rod, 8, 9... spring.

Claims (1)

[Scope of utility model registration request] The rear of the cart is equipped with a rotary bucket conveyor that lifts the excavated beets to a position above the storage tank, and a cover plate is installed along the inside of the length section that is the latter half of the beet ascending path on this bucket conveyor. In the beet harvester, an upper link and a lower link are pivotally attached to the upper and lower parts of the back surface of the cover plate, respectively, and these upper links and lower links are respectively extended to the middle part of the back surface of the cover plate and extend from the frame on the trolley. In addition to being pivotally connected to the stay, actuating rods extending inward of the bucket conveyor are connected to both of the links, and these actuating rods are each supported by a frame on the trolley so as to be able to slide in the axial direction, and are attached to the cover plate via springs. A beet harvester that is biased towards the back side.