JPH0451556Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for folding and raising a shoot head in a harvester for cutting corn, grass, etc. In this specification, the term "chute" includes not only a chute provided in the main body of the harvester, but also a chute joint, an extension chute, and the like.

[Prior Art] A shoot head guides corn, grass, etc. that have been cut into short pieces by a cutter device to be fed into a trailer accompanying a harvester by the action of both centrifugal force and blowing force.

The shoot head is connected to a chute connected to a drum-shaped cutting chamber housing a cutter device, and in the connected state extends upwardly and is curved. The shoot head is thus long and has considerable weight.

When transporting the harvester or storing it indoors, the shoot head, which extends upwardly, becomes an obstacle, so it is folded. As mentioned above, the shoot head is long and heavy, so folding it cannot be done by one person.
Work efficiency was poor because an assistant was always required.
The situation is exactly the same when raising the shoot head in the field, and it is impossible for one person to do the raising operation.

For this reason, if there is no helper available and it is not possible to fold the shoot head, it may be necessary to leave the shoot head in the upright position and connect it to a tractor to tow it. At the same time, a large bending moment is repeatedly applied to the connection portion between the shoot head and the shoot, and the connection strength of that portion becomes weaker.

In view of these problems, the present invention aims to make it possible for one person to perform this operation by using the turning cylinder used for turning the shoot head for folding and raising the shoot head. This was done for the purpose of

[Means for solving problems]

The present invention provides a harvester configured to rotate the shoot head relative to the chute by operating a swing link mechanism provided at a connecting portion between the chute and the shoot head using a swing cylinder, and in which In addition, the cylinder mounting shaft is constituted by a fixed shaft that is fixed and protrudes in the radial direction of the cross section of the chute, and a rotary body that is rotatably fitted on the outside of the fixed shaft. The base end of the cylinder is pivotally connected to the rotating body of the cylinder mounting shaft via a connecting pin, and when the cylinder head is folded and raised, the rotating body of the cylinder mounting shaft is approximately rotated.
It is characterized in that the turning cylinder is raised by rotating it by 90 degrees, and the distal end of the rod is connected to a bracket provided at the proximal end of the shoot head.

〔Example〕

1 and 2, a shoot 4 is vertically provided in the main body 2, a shoot joint 6 is connected to the shoot 4, and a shoot head 8 is connected to the shoot joint 6.
The shoot head 8 is gently curved, and brackets 10 and 12 are provided on the outer circumferential surface of the shoot head 8 on the inner side with respect to the direction of the bend.
A reinforcing stand 14 is stretched between them.

First, the connecting portion between the shoot joint 6 and the shoot head 8 will be explained.

In FIGS. 3 and 4, a ring 18 is placed on the flange 16 at the upper end of the shoot joint 6, and the flange 16 and ring 18 are sandwiched between a pair of half-split sandwiching bodies 20a and 20b. The sandwich bodies 20a, 20b and the ring 18 are connected with bolts 22. One sandwiching body 20
A connecting plate 28 is provided at the center of the shoot head 8 and is connected via a pin 26 to a connecting plate 24 provided at the lower end of the shoot head 8.
A T-shaped bolt 30 is rotatably attached to the center part of b.

Place the lower end of the shoot head 8 on the ring 18, connect the connecting plate 24 of the shoot head 8 and the connecting plate 28 of the sandwich body 20a with the pin 26, and rotate the T-bolt 30 provided on the sandwich body 20b. A bracket 31 is provided on the shoot head 8 (this bracket 31 is connected to the connecting plate 2).
When the lock nut 32 is tightened by engaging the ring 18
is not fixed to the shoot joint 6, so that the shoot head 8 is pivotably attached to the shoot joint 6. A pivoting bracket 34 is provided protruding from the sandwiching body 20b.

Next, the turning link mechanism A for turning the shoot head 8 will be explained with reference to FIGS. 5 to 9.

A cylinder mounting shaft B is provided at the upper end of the shoot joint 6 substantially horizontally and along the radial direction of the cross section of the shoot joint 6.
This cylinder mounting shaft B consists of a fixed shaft 36 fixed to the shoot joint 6 and a rotating body 38 rotatably fitted to the outside of this fixed shaft 36, and the base end of the swing cylinder 40 is Rotating body 38
It is pivotally connected to a connecting pin 42 attached to.

An arm 44 is attached to the upper end of the shoot joint 6.
is substantially horizontal and is fixed along the radial direction of the cross section of the shoot joint 6, and this arm 4
The center part of the first link _L1 is the pin 4 at the tip of the pin 4.
6, and one end of the second link _L2 is connected to a bracket 34 provided on the sandwich body 20b.
via pin 45, and the first link L ₁
One end is connected to the rod 48 of the turning cylinder 40 via a pin 50, and the other end of the first link _L1 is connected to the other end of the second link _L2 via a pin 52. connected. Therefore, when the rotating cylinder 40 is operated and the rod 48 is moved in and out, the pair of clamping bodies 20a, 20b that are integrated through the ring 18 rotate, so that the rod 48 can be attached to the pair of clamping bodies 20a, 20b. The shot head 8 rotates.

In order to fold the chute head 8 using the swing chute 40 that constitutes the swing link mechanism A, the lower end of the stand 14 and the bracket 10 are folded.
At the same time, remove the pin 50 and connect the rod 48 of the turning cylinder 40 and the first link _L1.
Then, as shown in FIGS. 1 and 10, the swing cylinder 40 is pulled up about the fixed shaft 36, and the tip of the rod 48 is attached to the bracket of the shoot head 8. Connect to 10.

In this state, when the lock nut 32 is loosened to disengage the T-bolt 30 and the bracket 31 attached to the shoot head 8, and the swing cylinder 40 is actuated to retract its rod 48, the shoot head 8 is moved from the pin 26. It rotates downward around the center and gradually folds. When the shoot head 8 reaches a predetermined position, the lower end of the stand 14, which is in a free state, is connected to the traction rod 54, thereby stabilizing the folded position.

In order to raise the folded shoot head 8 into an erect position, the rotation cylinder 40 may be used to perform the operation opposite to the above.

[Effect of idea]

According to the present invention, since the shooting head is folded and raised by a turning cylinder for turning the shooting head, one person can perform the work, and an assistant, which was required in the past, is not required.

Further, since the cylinder for folding and raising the shoot head also serves as a turning cylinder for turning the shoot head, there is no increase in cost.

[Brief explanation of drawings]

1 and 2 are overall side views of the harvester with the shoot head 8 raised and folded, respectively; FIG. 3 is an exploded perspective view of the connecting portion between the shoot joint 6 and the shoot head 8; 4 is a longitudinal sectional view of a similar portion, FIG. 5 is a perspective view for explaining the attachment state of the fixed shaft 36 and arm 44 attached to the shoot joint 6, and FIG. A perspective view of the link mechanism A, FIG. 7 is a plan view, and FIGS. 8 and 9 are views of the rotating body 38 fitted into the fixed shaft 36.
Fig. 10 is a perspective view of the state where the positions of are different by 90°.
FIG. 11 is a partial perspective view for explaining a state in which the turning cylinder 40 is raised, and FIG. 11 is a partial perspective view showing a state in which the shoot head 8 is folded. Explanation of symbols of main parts, A...Swivel link mechanism, B...Cylinder mounting shaft, 4...Chute,
6... Shoot joint, 8... Shoot head, 10... Bracket attached to the inside of the shoot head, 36... Fixed shaft, 38... Rotating body, 4
0...Swivel cylinder, 42...Connecting pin, 48
... Rotating cylinder rod.

Claims (1)

[Claims for Utility Model Registration] In a harvester configured to rotate the shoot head relative to the chute by operating a swing link mechanism provided at a connecting portion between the chute and the shoot head by a swing cylinder, the upper end of the chute A cylinder mounting shaft is composed of a fixed shaft that is fixed substantially horizontally to the chute and protrudes in the radial direction of the cross section of the chute, and a rotating body that is rotatably fitted to the outside of the fixed shaft. , a base end portion of the swing cylinder is pivotally connected to the rotating body of the cylinder mounting shaft via a connecting pin,
When folding and raising the shoot head, the rotating body of the cylinder mounting shaft is rotated approximately 90 degrees to raise the swing cylinder, and the tip of the rod is attached to a bracket provided at the base end of the shoot head. 1. A device for folding and raising a shoot head in a harvester, characterized in that it is configured to be connected.