JPH023710Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a safety device for a furrow work machine that is equipped with a cutting blade for cutting overgrown materials such as vines that are intertwined between the furrows. It is.

[Problems to be solved by the prior art and the invention]

In general, some crops such as root vegetables, such as sweet potatoes, grow thickly with vines intertwined from both sides in the furrows as they grow. The vines, etc. in the furrows are cut and divided into furrows using a furrow work machine, and then harvested. However, conventional furrow work machines are configured to cut thick vines, etc. by rotating an upright disc-shaped circular saw blade around a horizontal axis. The effective cutting width relative to the blade length (vertical diameter of the saw blade) is inevitably narrow, as cutting of vines, etc. may not be done smoothly at both the top and bottom ends relative to the length.
As a result, upper and lower guides were installed to guide the overgrowth between the furrows to a narrow effective cutting area, but the effective cutting width was narrow and the cutting ability was not sufficient, and it could also be used for extremely overgrown items. In order to improve the cutting ability, a larger diameter saw blade is required.
In this case, there is a drawback that the front and back lengths become long and the size cannot be avoided.

Moreover, even if the overgrown plants are cut off, they will still remain overgrown in the furrows.
It gets tangled with the feet of a worker walking behind, making it difficult for the worker to walk.
Sometimes there is a risk of falling, which is unacceptable.
There is a risk that the legs carried forward for walking may come into contact with the cutting blade in front of the driver and cause an unexpected injury. Therefore, attempts have been made to install a safety cover behind the cutting blade device, but the conventional safety cover was simply wide in the left and right direction, so the cut vegetation was forced away and sorted.
As a result, the sorting resistance inevitably increases, and there is also the problem that overgrowth gets stuck inside the safety cover, which requires further improvement.

[Means to solve the problem]

In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a safety device for a furrow working machine that can eliminate these drawbacks. A furrow working machine that is towed by a traveling type traveling body and works in a furrow section trampled by the traveling wheels, the working machine frame continuing rearward from a rear end of the body frame of the traveling body. At the rear end, a cutting blade frame is vertically extended downward, and at the lower end of the cutting blade frame, a protruding body for the furrow growth is formed to protrude forward. ,
A cutting blade device is constructed using a fixed blade that is long in the vertical direction and has an incisor formed on its front edge, and a movable blade that reciprocates up and down. It is arranged between the end portion and the lower raising body, and is configured to cut the overgrowth trampled by the running wheels by vertically guiding it by the working machine frame and the raising body and cutting it along the entire length of the incisor. Furthermore, the cutting blade frame has a guide part that expands laterally toward the rear and guides the cut overgrowth to the left and right, and a guide part that connects the left and right guide parts so that the worker's feet can be placed on the cutting blade. The invention is characterized by the provision of a safety device having a regulating section for regulating contact.

With this configuration, the present invention can smoothly distribute the cut overgrowth to the left and right to prevent the overgrowth from getting tangled around the worker's feet, and further prevent the worker's feet from coming into contact with the cutting blade. It is designed to reliably prevent this.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a running body of an agricultural work management machine that has an engine 3 mounted on a body frame 2 and runs by rotating two left and right running wheels 4 driven by the engine 3. A furrow working machine 6 is attached to the rear via a hitch 5 provided at the rear end of the frame 2. That is,
The working machine 6 is located approximately at the center in the left-right direction of both running wheels 4, and includes a main frame 7 whose front end is connected to the hitch portion 5 and extends rearward and upward, and a main frame 7 which extends downward from the rear end of the main frame 7. The cutting blade frame 8 is vertically disposed toward the ground and has its lower end substantially in contact with the ground, and the reinforcing frame 9 is supported and fixed between the middle part of the main frame 7 and the upper side of the cutting blade frame 8. The work machine frame is formed integrally with a driven pulley 10 that is supported on the rear end of the main frame 7 and a drive that is interlocked with the engine 3. A transmission belt 1 is connected between the pulley 11
1a is suspended, and driven by the engine 3, the driven pulley 10 rotates.

On the other hand, 12 is one side surface (the left side surface in this embodiment) of the cutting blade frame 8, and the upper side is the rear end position of the auxiliary frame 9, and the lower side is approximately the vertical direction from the rear end position of the cutting blade frame 8 to the substantially lower end of the cutting blade frame 8. A cutting blade device provided over the entire length, the cutting blade device 1
2 is connected to a fixed blade body 13 fixed to the side surface of the cutting blade frame 8 via a bolt 12a and an eccentric shaft 14 implanted in the driven pulley 10 via a link arm 15, and is connected to the rotation of the driven pulley 10. The so-called clipper blade (reciprocating blade) is configured in a vertical position by a movable blade body 16 that reciprocates up and down in conjunction with the movement.

Reference numeral 17 denotes a safety device, and the safety device 17 has a mounting hole 17a drilled at the front edge of the safety device 17, which is connected to the bolt 1.
2a and is integrally fixed to the cutting blade frame 8 by tightening the wing nut 18. A front regulating part 19 that regulates the person's foot from coming into contact with the cutting blade device 12
and side distribution guide parts 20 and 21 extending rearward from both left and right sides so that the front edges are connected in a continuous manner by the regulating part 19, The guide portions 20 and 21 are formed with inclined guide surfaces 20a and 21a so as to expand laterally toward the rear. Then, the safety device 17 removes the bushes cut by the cutting blade device 12 from the guide portion 2.
0 and 21 to the left and right to prevent vegetation from getting entangled around the worker's feet, and the regulating portion 19 to prevent the worker's feet from coming into contact with the cutting blade device 12. ing. Furthermore, a mounting hole 20b is drilled in the rear part of one of the guide parts 20, and the safety tool 17, which is removed from the cutting blade frame 8 when the cutting blade device 12 is not in use, can be attached to the cutting blade device 12 while covering it. If the bolt 12a is fitted into the mounting hole 20b and tightened with the wing nut 18,
The safety device 17 can be used as a safety cover that covers the cutting blade device 12.

In the figure, 22 is a tension pulley, 23 is a belt cover that covers the belt transmission mechanism, 24 is a driving handle, and 25 is an operating lever 25 on the driving handle 24 side to change the tension of the tension pulley 22.
a and the tension pulley 22; 26 is a sled body provided at the lower end of the cutting blade frame 8; 27 and 28 are a pulling body and a guide body, respectively; The cutting blade 26 protrudes forward and downward, and is configured to become more pointed toward the front end in order to pull up vines or the like that are rooted in the soil and guide them to the cutting blade device 12.

In the embodiment of the present invention configured as described above, when harvesting sweet potatoes, the traveling machine 1 is run between the furrows in order to cut the vines (overgrowth) that are intricately intertwined and overgrown between the furrows. The overgrown vines are reliably cut and divided into furrows by the cutting blade device 12. That is, the traveling aircraft 1
As the vines travel through the furrows, the vines growing in the furrows are located on the upper side of the main frame 7 extending from the fuselage frame 2,
so that it is held down by the reinforcing frame 9,
Further, the lower part is pulled up by the guide rod 27 and the guide rod 28 to be reliably guided and guided by the cutting blade device 12 so that all cuts are made.

As described above, in the present invention, the cutting blade device 12 for cutting the vines that have grown thickly between the furrows is different from the conventional rotating circular saw blade, and is configured with clipper blades arranged vertically in the vertical direction. Therefore, the full length of the blade becomes the effective cutting length as it is, and its cutting performance does not change depending on the upper or lower cutting position and exhibits stable cutting performance at any position. As mentioned above, the vines trampled by the running wheels 4 are cut by the length of the blade (vertical diameter ) It is not necessary to guide the cutting blade to an effective cutting area that is set narrower than that of the cutting blade device 12, and it is sufficient to guide the blade to a wide range of the entire blade length of the cutting blade device 12. Therefore, there is no waste in the blade length, the entire length of the blade can be used as an effective cutting area, and even if the blade is compact, wide cuts can be made using the entire length of the blade.

Moreover, since it is not a circular saw blade, the front and rear length can be shortened, and the incisors do not face the rear. As a result, even if it is installed at the rear of the traveling machine, it is safe for workers who walk behind it while holding the operating handle 24. This means that countermeasures can be significantly simplified.

Furthermore, in this device, the vines that are lifted up again behind the machine frame 2 and try to escape upward are pushed and guided to the upper side of the cutting blade device 12 by the working machine frame consisting of the main frame 7 and the reinforcing frame 9. Therefore, even tall vines can be cut without leaving any cuts, and vines that have grown thickly by creeping over the field or have shallow roots in the soil can be cut. , since it is pulled out by the pulling body 27, it is scooped up by the pulling body 27 and guided to the lower side of the cutting blade device 12 to be cut. However, even if the blade length of the cutting blade device 12 is temporarily lowered, there will be no uncut portions of the vines.
Therefore, it is convenient because it can further contribute to making the working machine 6 more compact.

Furthermore, in the present invention, the overgrowth that has been cut by the cutting blade device 12 is immediately distributed so that it is gradually spread out from side to side by the safety device 17, which is sloped so as to spread out toward the rear. This makes it extremely easy to walk, as workers can walk along the ridges where the overgrown things are organized, and the overgrown things are less likely to become entangled with the feet of the workers walking behind them. Post-processing is also easier. Moreover, the guide parts 20 and 21 for distributing the overgrowth to the left and right are slanted so that they widen toward the rear, so they are similar to conventional safety covers using wide plates on the left and right. There are no problems such as large sorting resistance or overgrowth clogging the front side of the safety cover.

Furthermore, when the safety device 17 of this embodiment is not in use, such as when stored or when traveling on the road, it is once removed from the cutting blade frame 8 and then attached to one of the side plates 20 through a hole in a state that covers the cutting blade device 12. By fitting and fixing the bolt 12a into the hole 20b, the safety device 17 can conveniently be used as a safety cover that covers the cutting blade device 12.

It should be noted that the present invention is of course not limited to the above-mentioned embodiments, but the point is that behind the cutting blade, there is a bush sorting guide part that expands laterally toward the rear, and Any method can be used as long as it is equipped with a safety device that has a regulating section that is interposed to connect the left and right guide sections to prevent the worker's feet from coming into contact with the cutting blade. The tool can be formed of a rod-like member as shown in FIG. In this case, the safety equipment is the guide body 2
If 8 is extended, it is convenient as it has the advantage that the overgrowth can be distributed in a continuous manner before and after cutting, and the shape of the safety device in this case can be various as shown in Fig. 5. can do.

[Effect]

In summary, since the present invention is constructed as described above, overgrown plants such as vines that grow in a complicated manner between the ridges can be cut to the front after being trampled by the running wheels. The cutting blade device is made up of a vertically long fixed blade with teeth and a movable blade. If the object tries to rise higher than the blade height again, it will be guided by the work equipment frame that continues from the machine frame to the rear, and will be reliably guided to the lower incisor, which will cause the cutting blade device to There is no need to raise the height upwards to avoid uncutting tall, overgrown vegetation, and the cutting blade device can be compactly placed below the work equipment frame that continues from the machine frame to the rear. .

In addition, the cutting blade device configured using a fixed blade and a movable blade that reciprocates up and down is arranged such that the entire length of its incisor is disposed between the work machine frame and the lifting body that guide the up and down, and the guide The overgrowth that has been
As a result, the entire length of the incisor can be used as the effective cutting length, and it is possible to cut at both the upper and lower ends like a circular saw blade. There is no need to make it narrow so as not to guide overgrowth, and as mentioned above, the cutting blade device is compactly configured below the work machine frame, but it also ensures a wide effective incisor in the vertical direction. This makes it possible to smoothly and reliably cut overgrown materials even in fields with severe overgrowth.

Furthermore, the overgrowth that has been cut by the cutting blade device is gradually sorted by the sorting guide provided on the cutting blade frame while being pushed from side to side so that it immediately spreads out.
The walking area of a worker walking behind can be made free of overgrowth, and it is possible to reliably prevent overgrowth from getting entangled with the feet and taking away the feet, making it extremely easy to walk. In addition, the regulating portion prevents the feet carried forward for walking from coming into contact with the cutting blade, which together provide extremely excellent safety.

Furthermore, since the sorting guide is slanted so that it expands towards the rear, the left and right sorting of the cut bushes is similar to a safety cover constructed using a plate-like body with wide left and right widths. This can be done while reliably avoiding problems such as large sorting resistance occurring due to forced sorting of overgrown objects or problems such as overgrown objects clogging inside a cover, and thus smooth and highly efficient furrow work can be performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the safety device for the furrow working machine according to the present invention, in which Fig. 1 is an overall side view of the furrow working machine, Fig. 2 is a horizontal sectional view of the main parts,
FIG. 3 is a side view of the safety device, FIG. 4 is a perspective view of main parts showing another example, and FIGS. 5A to 5C are perspective views showing the shape of the safety device. In the figure, 6 is a furrow work machine, 7 is a main frame, 8 is a reinforcing frame, 9 is a cutting blade frame, 12 is a cutting blade device, 13 is a fixed blade, 16 is a movable blade, 17 is a safety device, and 19 is a regulation Sections 20 and 21 are distribution guide sections.

Claims (1)

[Scope of utility model registration request] A furrow working machine that is towed by a traveling type traveling machine body having traveling wheels for traveling between the furrows and works in a furrow area trampled by the traveling wheels,
A cutting blade frame is vertically extended downward from the rear end of the working machine frame extending rearward from the rear end of the machine frame of the traveling machine, and the lower end of the cutting blade frame is provided with a furrow overgrowth attracting member. The cutting blade frame is constructed by using a fixed blade that is long in the vertical direction and has an incisor formed on the front edge, and a movable blade that reciprocates up and down. The cutting blade device is provided such that the incisor portion is disposed between the rear end of the upper working machine frame and the lower lifting body, and the cutting blade device is arranged to raise the overgrowth trampled by the running wheels with the working machine frame. The cutting blade frame is configured to be guided up and down by the body and cut along the entire length of the incisor, and the cutting blade frame further includes a guide part that expands laterally toward the rear and guides the cut overgrowth to the left and right, A safety device for a furrow working machine, characterized in that a safety device is provided, comprising a regulating part that connects the left and right guide parts to prevent the worker's feet from coming into contact with the cutting blade.