JPH0238600Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, a combine harvester in which a cutter is attached to the rear of the threshing device mounted on the machine base, and a dropper or a binding device is further attached to the rear of the machine, is used to transport the straw from the culm outlet of the threshing device. Since it is necessary to supply the transported waste straw not only to the cutter but also to the waste straw processing equipment at the rear, a guide rail facing the waste straw conveyor is fixed to the switching plate installed on the top of the cutter. When the switching plate is closed to supply the waste straw to the waste straw processing device at the rear, the guide rail approaches the lower part of the conveying surface of the waste straw conveyor, and the switching plate is raised to shred the waste straw. When the upper part of the cutter is moved to open the upper part of the cutter, the guide rail is also moved up and rotated together with the switching plate, and is retracted from the opening of the cutter.

In order to prevent the guide rail from colliding with the straw removal conveyor when the switching plate is rotated upward in this way, there is no choice but to position the guide rail outside the straw removal conveyor in plan view. As a result, when the waste straw is conveyed rearward from the cutter, there are disadvantages such as the pinching and conveyance of the waste straw becomes unsmooth, and straw waste falls off and falls into the cutter.

The purpose of this invention is to improve the above-mentioned drawbacks, and the purpose of this invention is to attach a cutter to the rear of a threshing device mounted on a machine base, and to install a drain extending from the culm of the threshing device to the top of the cutter. In a combine harvester configured to switch between a state in which waste straw transported by a straw transporter is supplied to a cutter and a state in which it is discharged uncut beyond the cutter, the waste straw transporter is placed above the cutter in a descending position. When installing a guide rail that switches between an uncut discharge state, which is a clamping position facing the conveyance surface, and a cutter supply state, which is a non-clamping position in an ascending position, It is characterized in that it is rotatably supported by a support shaft that is tilted downward in the direction.

The embodiments shown in the drawings will be explained below.
1 is a threshing device mounted on a machine base having a traveling device, and a desk-shaped cutter 2 is attached to the rear of the threshing device, and a notch or dropper (not shown) is attached to the rear of the threshing device. A pair of left and right straw carriers 3, 3 is diagonally stretched from the rear of the culm discharge port of the threshing device 1 to the upper part of the cutter 2, and the rear ends of the straw carriers 3, 3 are arranged diagonally. It is composed of a conveyance chain 3a facing above the cutter, and a rail 3b which is supported above the dust sorting chamber and whose terminal end extends to the rear end of the threshing device 1.
The shaft on which the is mounted is driven by a belt 6.

Further, at both ends of the pipe shaft 7, which is rotatably supported by bearings on the rear upper surface of the cutter 2, there are L-shaped rods 8, 8, which are protruded forward and then bent inward at the upper part of the front wall. The switching body 9 is constructed by welding and fixing plates 9a, 9a whose inner edges are along the outside of the conveyor chains 3a, 3a in plan view, and an arm 10 protruding from one end of the pipe shaft 7 serves as a control section. It is connected by a wire 11 to an operating lever provided in the cutter 2, and when the switching body 9 is opened by the operating lever, the clutch of the cutter 2 is disengaged, and when it is closed, the clutch is engaged.

Immediately below the rear portions of the conveyance chains 3a, 3a, guide rails 12, 12 having an L-shaped cross section are disposed to face the lower surface of the chain rollers in a lowered working position, and the rear ends of these guide rails 12, 12 is pivotally supported on the rear upper surface of the cutter 2 by a support shaft 14 that is tilted downwardly toward the outside when viewed from the conveying direction and supported by brackets 13, as shown in FIG. Each plate 9a, 9a of
There is a push-up bar 1 that also serves as a stopper on the inside top surface of the
5 and 15 protrude inward.

In the above-mentioned apparatus, when the switching body 9 is opened in order to shred the waste straw that has been conveyed by the waste straw conveyors 3, 3 and scatter it on the field, the push-up rods 15, 15 move the switching body 9 into pieces.
At the same time, the guide rails 12, 12 are raised as shown by chain lines in FIGS. 1 and 3.

At this time, since the support shafts 14, 14 that support the guide rails 12, 12 are inclined downwardly toward the outside, as they rise, they open toward both sides as shown by chain lines in FIG. It does not stand up and come into contact with the conveyor chains 3a, 3a.

Further, when the switching body 9 is lowered, the guide rails 12, 12 descend while going inside, and enter directly under the conveyor chains 3a, 3a, as shown by solid lines in FIG. ,3a
and form a so-called pinch relationship.

Therefore, when the waste straw is conveyed rearward from the cutter 2 and supplied to the knotter or dropper, the waste straw can be reliably held and conveyed in an orderly manner, and straw waste can be prevented from falling off.

As described above, the present invention includes a cutter attached to the rear of a threshing device mounted on a machine base, and waste straw transported by a straw conveyor stretched from the culm of the threshing device to the top of the cutter is cut into cutters. In a combine harvester that is configured to switch between a feeding state and a state of discharging uncut straw beyond the top of the cutter, the uncut straw is placed above the cutter in a descending position and in a clamping position facing the conveyance surface of the straw removal conveyor. When installing a guide rail that switches between the discharge state and the cutter supply state, which is a non-clamping position in the raised position, the rear part of the guide rail can be rotated on a support shaft that is tilted downward to the side when viewed from the conveyance direction. When the guide rail rises and assumes the position of supplying waste straw to the cutter, the guide rail moves upward and rotates around the support shaft that is tilted outward and downward to the straw removal conveyor. In addition, when the guide rail is lowered to the position where the waste straw is discharged uncut, it faces the conveyance surface on the bottom of the conveyor, which securely grips the waste straw and prevents clogging. It is possible to convey the straw in an orderly manner while preventing the straw from being disturbed, and it is also possible to significantly reduce the chance of straw waste falling off during conveyance.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the straw conveyor and cutter attached to the rear of the threshing machine, Figure 2 is a plan view of the same as above, and Figure 3
The figure is a partially cutaway perspective view to show the function of the main parts. DESCRIPTION OF SYMBOLS 1... Threshing device, 2... Cutter, 3... Straw removal conveyance device, 9... Switching body, 12... Guide rail,
14... Support shaft, 15... Push-up bar.

Claims (1)

[Scope of utility model registration request] A cutter is attached to the rear of a threshing device mounted on a machine base, and the straw conveyed by a straw conveyor stretched from the culm opening of the threshing device to the top of the cutter is supplied to the cutter, and the top of the cutter is shown below. In a combine harvester that can be switched to a state in which the cutter is discharged uncut, there is a state in which the cutter is discharged uncut, and a state in which the cutter is discharged uncut, which is a clamping position facing the conveyance surface of the straw removal conveyor in a descending position, and a state in which it is discharged uncut in an ascending position. The guide rail that switches between the cutter supply state and the non-clamping position is arranged, and the rear part of the guide rail is rotatably supported by a support shaft that is laterally inclined downward when viewed from the conveying direction. A feeding device in a combine harvester's waste straw processing equipment.