JPS6014340Y2 - Cutting height adjustment device for reaper - Google Patents

Description

[Detailed description of the invention] The present invention is a method of adjusting the cutting height in a reaper that adjusts the height of the cutting position of the culm by changing the height above the ground by adjusting the position of the cutting blade device up and down with respect to the cutting frame. Relating to an adjustment device.

Conventional cutting height adjusting devices include those with a stepless configuration in which the adjustment hole is formed into a long hole, and those with a stepped configuration in which the adjustment hole is formed in several stages.

However, in the former configuration, when adjusting the cutting blade attachment member, the appropriate position is determined by sliding it up and down in the long hole, but it is not practical because it slides up and down during the cutting process, causing misalignment. There wasn't.

Therefore, the latter type of stepped adjustment was superior in that it could be tightened and fixed more reliably.

However, during adjustment work, because the bolt is stepped, it is necessary to remove the bolt from the adjustment hole and replace it with another adjustment hole.
The work required two people: one to support and position the cutting blade, and the other to align each insertion hole and insert the bolts, which was extremely tedious and time-consuming.

The purpose of this invention is to eliminate the defects of the conventional type and to create a device that allows adjustment operations to be performed relatively easily, and has taken the following technical measures.

That is, the cutting height adjustment device according to the present invention is a clipper-type cutting blade device consisting of a fixed receiving blade and a movable blade that reciprocates left and right, and both ends of the cutting blade device are fixed to the cutting frame. It has a structure that can be tightened and fixed in only a few places, and is installed so that the vertical position can be adjusted in a stepwise manner, and the approximately middle part of the cutting blade device can be freely moved to any position within the vertical position adjustment range of this cutting blade device. It is characterized in that it is attached via a support member whose position can be changed steplessly as a structure that can be tightened and fixed.

Therefore, according to this, the position of the left and right end portions of the cutting blade device can be adjusted in a stepwise manner with respect to the reaping frame as in the past, but in particular, in addition to this, the cutting blade device Approximately the middle part of the cutting frame is tightened and fixed to the reaping frame via a support member whose position can be changed steplessly, so the fixed state after adjustment is strong and stable even when cutting a wide width. Although it can be supported, when adjusting it, both sides of the cutting blade must be removed before changing its position.
At this time, even if the fixed state of the intermediate part is loosened, the cutting blade device will not fall downward, and it can be supported in a suspended state at the lowest adjustment position of the cutting blade device, so that subsequent position change adjustments can be made. This invention can be easily and efficiently carried out.The present invention will be explained below based on an embodiment shown in the figure.1 is a cutting blade frame 2, a fixed receiving blade 3 supported by this cutting blade frame, and This clipper-type cutting blade device includes a movable blade 4, etc., which is provided above the fixed receiving blade so as to be able to reciprocate in left and right directions.

5 is the reaping frame, 5 a, 35 be 5 c
Denoted are weed support rods which are part of the reaping frame 5 and are arranged at predetermined intervals in the lateral direction.

The cutting blade device 1 has its left and right ends attached to left and right grass support rods 5a and 5c, which are reaping frames.
Mounting holes 6a, 6b are provided at a predetermined interval above and below in a and 5c.
A cutting height adjusting plate 6.6 having a hole therein is fixed in a hanging state, and a mounting plate 7.7 having a mounting hole 7a is provided on the side of the cutting blade device 1 at both ends of the cutting blade frame 2. The cutting height adjustment plate 6.6 is fixed integrally with the mounting hole 6a or 6.
A bolt 8 is inserted through the mounting holes 7a of the mounting plates 7, 7, and the cutting height adjusting plates 6, 6 and the mounting plates 7, 7 can be integrally tightened and fixed with a nut 9. .

Further, a support member 10 having a mounting hole 10a is provided vertically protruding upward from the cutting blade frame 2 at an approximately intermediate position of the cutting blade device 1, and a grass dividing support rod 5b in the center has a cutting height adjustment range. A support member 11 having a long hole 11a formed therein (between the attachment holes 6at and 6b) is fixed, and both support members 10.
11 is inserted into the mounting hole 10a1 and the long hole 11a.
It can be tightened and fixed with a nut 13 and a nut 13.

In the figure, 14 is a blade holder, 15 is a drive mechanism for driving the movable blade 4, and 16 is a crank arm 17 of which is a rod, and these joints are used to change the position of the cutting blade device 1 up and down. A universal ball joint is used to ensure that the drive is performed as expected.

Therefore, according to this configuration, the cutting blade device 1 shown in FIG.
The mounting state is when the cutting height is changed upward to a higher position, and when changing the position to a lower position downward, the fixation of both sides of the cutting blade to the cutting frame is released, that is, the nut 9 and the bolt 8 are removed. Loosen and remove it, and then loosen the nut 13 in the middle to release the tightened and fixed state, so the cutting blade device 1 moves down only within the range of the elongated hole 11a, stands still, and is supported in a suspended state. will be done.

Thereafter, the mounting holes 7a of the mounting plates 7, 7 on both sides are aligned with the mounting holes 6b of the cutting height adjusting plates 6, 6, and the bolts 8 are inserted and tightened and fixed with the nuts 9.

Then, by tightening the nut 13 at the intermediate position, the cutting blade device 1 is integrally tightened and fixed to the reaping frame at three locations: the left and right ends and the intermediate position. As mentioned at the beginning, it is strong and has the advantage of being able to easily adjust the cutting height.

[Brief explanation of the drawing]

The figures show one embodiment of this invention; Fig. 1 is a plan view showing the main parts of the reaping section of a combine harvester, Fig. 2 is a cutaway front view of the main parts, and Fig. 3 is a side view thereof. . 1 is a cutting blade device, 2 is a cutting blade frame, 3 is a fixed receiving blade, 4 is a movable blade, 5 is a cutting frame, 6 is a cutting height adjustment plate, 6av6
7 is a mounting hole, 7 is a mounting plate, 7a is a mounting hole, 10.11 is a support member, 10a is a mounting hole, and lla is a long hole.

Claims (1)

[Scope of utility model registration request] This clipper-type cutting blade device consists of a fixed receiving blade and a movable blade that reciprocates from side to side, and both ends of this cutting blade device have a structure that can be tightened and fixed to the reaping frame at only a few specific points. It is installed so that the vertical position can be changed in stages, and the approximately middle part of the cutting blade device is configured to be able to be freely tightened and fixed at any position within the vertical position adjustment range of this cutting blade device, so the position can be changed steplessly. A device for adjusting the cutting height in a reaper, characterized in that it is mounted via a possible support member.