JPH0536366Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a safety device for a straw removal cutter in which a safety cover is provided on the stock side of the straw removal passage leading to the straw removal cutter.

[Prior art]

According to safety standards, a safety cover must be installed on the straw removal passageway leading to this type of straw removal cutter. 55
−41012 has been proposed.

The device disclosed in Japanese Utility Model Publication No. 57-49650 is provided with a single large safety cover 15 so that its rear end extending rearward can swing vertically about a fulcrum 16 on the starting end side. Also, Jikko 55-
The device disclosed in Japanese Patent No. 41012 has a plurality of vertically long split safety covers 9a arranged side by side, each of which is suspended so that its lower side swings independently around the upper axis X.

[Problem that the invention attempts to solve]

However, in the case of Utility Model Publication No. 57-49650, the distance between the fulcrum 16 and the center of gravity of the safety cover 15 is long, and the safety cover 16 is centered around the fulcrum 16 due to the conveying straw that comes into contact with the lower edge of the starting end of the safety cover 15. 1
Since a large rotational force is required to move the safety cover 15 upward, the safety cover 15 may not move upward and become clogged with straw, or the straw may be subject to large conveyance resistance, causing the straw to be conveyed in a disturbed posture and the straw cutter may not move properly. There was a problem that the cutting process could not be performed smoothly.

In addition, in the case of Utility Model Publication No. 55-41012, the lower part of the split safety cover 9a swings lightly around the upper X axis, but there is a slight vibration from the outside at the joint part of the split safety covers 9a that are adjacent to each other. There was a problem in that the safety effect could not be fully exerted and it was dangerous because just by applying force from the fingertips, it would open in both the front and back, creating a gap.

The purpose of the present invention is to solve the above-mentioned conventional problems and to provide a safety device for a straw cutter that can be easily swung by the straw being conveyed and that can sufficiently exhibit safety effects. .

[Means for solving problems]

That is, the safety device for the straw removal cutter of the present invention includes a plurality of safety covers arranged in parallel in the straw removal direction on the straw removal stock source side of the straw removal passage leading to the straw removal cutter, and each of the safety covers The structure is such that the safety covers are pivotally supported on a fulcrum shaft provided on the upper side of the straw conveyance path so as to be swingable only in the straw removal direction, and each safety cover is pivotally connected to each other by an interlocking link so that they can swing simultaneously. It is characterized by:

[Effect]

When waste straw is not being transported, the multiple safety covers installed in parallel are in a hanging state supported by the fulcrum shaft.
Of course, even if you push the safety cover from the outside, the safety cover will not move inward and open. Each safety cover is connected to each other by interlocking links and will not move independently, so even if you push the connection part of adjacent safety covers to the outside. The safety cover can be reliably prevented from opening in both the front and rear directions even if pushed from the front, and the safety effect can be fully exhibited.

In addition, when transporting waste straw, the stock of waste straw being transported through the waste straw transport path comes into contact with the safety cover on the transport start end, so that the entire hanging safety cover is centered around the fulcrum shaft. It is pushed in the direction of transporting the waste straw and swings lightly, and a transport path for the waste straw can be ensured, thereby preventing the waste straw from becoming clogged or disturbed in the waste straw transport path.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to drawings showing one embodiment of the invention.

As shown in FIG. 1, the combine 1 includes a traveling device 3 having a pair of left and right crawlers 2, 2 that touch the ground.
A threshing device 5 is mounted on a platform 4 provided on the crawlers 2, 2, and a grain culm clamping and conveying device is mounted on the front of the handling barrel (not shown) of the threshing device 5. 6 are arranged. Threshing device 5
A straw removal cutter 8, which will be described later, is arranged behind the straw removal cutter 8, and a straw removal conveyance device 7 is provided in a straw removal passage formed from the terminal end of the grain culm holding and conveyance device 6 to above the straw removal cutter 8. The straw transporting device 7 is disposed obliquely so as to gradually incline from one side of the machine body to the other side as it goes rearward in plan view.

Below the terminal end of the straw conveying device 7, a threshing device 5 is installed.
Rotating shafts 11a and 12a parallel to each other are mounted on the straw cutter 8 disposed behind the straw cutter 8, and a plurality of opposing cutting blades 11 and 12 are mounted on the rotating shafts 11a and 12a at a predetermined interval. Fixed. Also, these rotating shafts 11a and 12a
Transmission gears 13 and 14 that mesh with each other are fixed, and one rotating shaft 12a is driven and rotated by the threshing device 5, thereby cutting both the cutting blades 11 and 12.
is designed to rotate in the direction of the arrow.

This straw removal cutter 8 is provided with a switching plate 10 that can be raised and fixed freely around a fulcrum 9, and when the switching plate 10 is in an upright state, the straw removal cutter 8 is transferred by the straw removal transport device 7 and the lower transport rail 13. The straw falls into the straw cutter 8, and the straw cutter 8
A plurality of cutting blades 11 and 12 rotating within the culm simultaneously cut the culm into pieces of a predetermined length.

In addition, the straw cutter 8 can be removed by lowering the switching plate 10.
When the drop opening is closed, the straw is transported backward by the straw transporting device 7 over the fallen switching plate 10, and then falls downward from the end of the machine.

This straw cutter 8 is cantilevered so that one side can be opened and closed about the vertical axis Y of the other side of the machine in order to efficiently perform maintenance such as polishing and inspection of the cutting blade. , is firmly supported on this vertical axis Y by both the upper rotation fulcrum 15 and the lower rotation fulcrum 20.

The lower rotation fulcrum portion 20 is configured as follows. That is, a horizontal seat 23 supported on the upper surface of the bearing section 21 is fixed above the fulcrum shaft 22 that is vertically fitted into a bearing section 21 fixed to the machine base 4, and each base end is fixed to the horizontal seat 23. The two fixed stays 24 and 25 are extended upward and attached to the cutter body 26, and the stays 24 support the cutter body 26 in the width direction Z from below, and the stay 2
5 supports the cutter main body 26 in the longitudinal direction As shown in the figure, the length direction of the cutter body 26 which is the farthest distance from the bearing part 21 can be effectively supported, and both stays 24 and 25 are approximately L in plan view.
Because of the mold arrangement, the dispersion of the shredded straw falling from the straw cutter 8 is not hindered.

Further, the details of the upper rotation fulcrum part 15 are explained in the fourth section.
As shown in the figure, it is composed of a fulcrum shaft 18 penetrating through a bearing part 16 fixed on the cutter body 26 side and a bearing part 17 fixed on the threshing device 5 side, and a rotation fulcrum part of the straw cutter 8. There is a locking piece 4 on the opposite side.
1 is fixed, and a fulcrum crossing locking tool 42 that engages with this locking piece 41 is fixed to the side of the threshing device 5, and furthermore, a closed straw cutter 8 is positioned on the side of the threshing device 5. A supporting portion 43 is fixed. Then, the transmission belt for driving the rotating shaft 11a is removed, the fulcrum cross-locking device 42 is released, and the straw cutter 8 is moved rearward about the vertical axis Y as shown in FIG. It can be rotated to the open state. Note that 44 is a side cover that covers the side surfaces of the threshing device 5 and the straw cutter 8, and this can be attached and detached with cover mounting bolts 45.

Then, as shown in Figure 1, the straw cutter 8
A plurality of safety covers 32 are arranged in parallel on the straw stock side of the straw removal passageway leading to the waste straw stock, and the safety covers 32 are suspended so that the lower side swings only in the straw removal direction with the upper fulcrum shaft 31 as the center. , each of these safety covers 32...
are pivotably connected to each other by an interlocking link 33 provided laterally below the fulcrum shaft 31, so that they can swing simultaneously.
The details are shown in Figure 2.

That is, a mounting bracket 34 bent into a U-shape in plan view is removably provided on the side surface of the straw cutter 8, and a mounting stay 35 is fixed to the inside of this mounting bracket 34 at a predetermined distance. A plurality of pin holes penetrating through the mounting stay 35 and the mounting bracket 34 are provided at predetermined intervals in the front-rear direction, and the upper side of each safety cover 32 is fixed by each fulcrum shaft 31 fitted into each hole. It is pivotally supported.

An overlapping portion 32a having an L-shaped cross section is protruded from one side of the safety cover 32, and the overlapping portion 32a that protrudes covers the rear of the distance H between the adjacent safety covers 32. It's getting old. Further, a plurality of connecting pins 36 are each fixed to the interlocking link 33 at a predetermined distance in the front-rear direction, and each of the connecting pins 36 is connected to the safety cover 32...
By fitting into adjacent pin holes 36a provided below the fulcrum shaft 31, the suspended safety covers 32 are pivotally connected to each other by interlocking links 33 provided laterally. ,
It is configured to be able to swing at the same time.

Therefore, when the waste straw is not transported, the first
A plurality of safety covers 32 are arranged in series as shown in the figure...
is in a hanging state supported by the fulcrum shaft 31..., and even if the safety cover 32... is pushed from the outside, the safety cover 3...
Of course, 2... will not be displaced inward and open.
Each safety cover 32... is connected to each other by an interlocking link 33 and does not move independently, so even if the connecting portion of adjacent safety covers 32... is pushed from the outside, it is possible to reliably prevent the safety cover 32 from opening both forward and backward. The safety effect can be fully demonstrated.

In addition, when the waste straw is being transported, as shown in FIG. 32...The whole body is pushed and rotated in the straw transfer direction around the fulcrum shaft 31..., but each safety cover 32... is lightweight and the distance between the fulcrum shaft 31... and the center of gravity is extremely short, so it is nimble. The straw can be swung to ensure a clear straw transport path.
It is possible to prevent clogging and disturbance of straw in the straw transport passage.

[Effect of idea]

As described above, in the present invention, a plurality of safety covers are arranged in parallel in the straw removal direction on the straw removal stock source side of the straw removal path leading to the straw removal cutter, and each of the safety covers is attached to the straw removal path. It is supported on a fulcrum shaft provided on the upper side so that it can swing freely only in the straw removal direction, and
Since each safety cover is pivotally connected to each other by an interlocking link and is configured to be able to swing simultaneously, when the waste straw is not being conveyed, the multiple safety covers installed in series are pivoted on the fulcrum shaft and are in a hanging state. Of course, even if you push the safety cover from the outside, the safety cover will not displace inward and open, and each safety cover is connected to each other by interlocking links and will not move independently, so even if you push the connection part of each safety cover from the outside. Even when pressed, adjacent safety covers can be reliably prevented from opening both in the front and rear directions, and the safety effect can be fully exhibited.

Furthermore, when transporting waste straw, the stock of waste straw being transported through the waste straw transport path comes into contact with the safety cover on the transport start end side, so that the safety cover is pivotally connected to the safety cover so that it can swing at the same time using an interlocking link. The entire cover is pushed in the straw transfer direction around each fulcrum shaft and swings lightly, ensuring a clear straw transport path, which prevents straw clogging and disturbance in the straw removal path. can.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, in which FIG. 1 is a side view of a combine harvester with a part of the main part of the straw cutter cut away, and FIG. -A cross-sectional view, Figure 2B is B-B in Figure 1
Fig. 2C is an exploded perspective view of the safety cover, Fig. 3 is an explanatory diagram of the operation of the safety cover, Fig. 4 is a perspective view of the rear of the combine showing the rotational fulcrum of the straw cutter, and Fig. 5 The figure is a side view of the combine showing the rotational posture of the straw removal cutter, Figure 6 is an enlarged side view of the lower rotation fulcrum part shown partially cut away, and Figure 7 is a plan view of the straw removal cutter. . 1... Combine harvester, 8... Straw cutter, 31
...Fullin shaft, 32...Safety cover, 33...Interlocking link.

Claims (1)

[Scope of utility model registration request] Multiple safety covers are installed in parallel in the direction of straw transport on the straw removal plant side of the straw removal path leading to the straw removal cutter.
Each of the safety covers is pivotally supported on a fulcrum shaft provided above the straw removal passage so as to be swingable only in the straw removal direction, and the safety covers are mutually pivotally connected by interlocking links at the same time. A safety device for a straw cutter characterized by a swingable structure.