JPH0456572B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a furrow working machine that is attached to a management machine, a tailor, etc. for agricultural work, and more specifically, This relates to a device designed to cut overgrown vines, etc.

[Prior Art and Problems to be Solved by the Invention] In general, some agricultural crops such as root vegetables, such as sweet potatoes, grow thickly with vines intertwined in a complicated manner from both sides as they grow. This becomes a hindrance during harvesting, so when harvesting, the overgrown vines and the like are cut in advance using a furrow work machine and divided into furrows before harvesting.

However, conventional furrow work machines are configured to actively cut thick vines, etc. by rotating an upright disc-shaped circular saw blade around a horizontal axis. In this case, there is no problem because the incisors mainly move up and down at the middle position relative to the blade length (vertical height of the circular saw blade), but at both the upper and lower ends, the incisors mainly move back and forth. As a result, the vines, etc. that are sent in as the machine moves cannot be cut smoothly, and the effective cutting length relative to the blade length is shortened, and the vines are forced to wrap backwards due to the rotation of the circular saw blade. Rather than allowing the vines to become clogged, the vines are forcibly pulled and the root vegetables to be harvested are forcibly pulled out of the soil, causing them to break or become damaged, resulting in a significant drop in product value. This was becoming a problem.

Therefore, if the circular saw blade is made to have a large diameter in order to lengthen the effective cutting length in the vertical direction, the rotation locus of the circular saw blade will protrude significantly backwards, and as a result, the front-to-back length of the work equipment will become longer. Not only could the machine as a whole inevitably become larger, but it was also necessary to provide strict protection for the feet of workers who were walking behind the machine while operating the operating handle, which also caused problems. .

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a furrow working machine capable of eliminating these drawbacks. In a furrow working machine that is towed by a traveling machine body having wheels to work in a furrow area, a work machine frame is provided so as to extend rearward from a rear end of the body frame located behind the running wheels of the traveling machine body. , a cutting blade frame is vertically disposed downward in a ridge at the rear end of the working machine frame, and the lower end of the cutting blade frame is placed at the front end of a sled body that serves as a ground guide for the cutting blade frame. is located lower forward, and between the grounding position of the running wheels and the sled body, it is lower than the grounding position of the running wheels and the front end is immersed in the soil. Protruding from the high position toward the front with a low front and high rear shape,
The lifting body and the work machine frame are arranged vertically to face each other, and the cutting blade frame has 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. A cutting blade device configured using a cutting blade device is provided such that the incisor portion is arranged over substantially the entire area from the rear end of the upper working machine frame to the lower lifting body, and This device is characterized in that a trampled overgrowth is vertically guided by a working machine frame and a lifting body whose front end is sunk into the soil, and is cut by the entire length of the incisor.

With this configuration, the present invention allows the effective cutting length of the cutting blade to match the length of the blade, and furthermore, the front and rear lengths of the cutting blade can be significantly shortened, making it possible to avoid wrapping vines as in the conventional method. In addition to being able to reliably cut vines, etc. without such inconvenience, the work machine can be made significantly lighter and more compact.

[Example] Next, an example 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 in which the present invention is implemented is attached to the rear of the traveling body 1 via a hitch part 5 provided at the rear end of the frame 2. That is, the working machine 6 includes a main frame 7 whose front end is connected to the hitch part 5 and extends rearward and upward, and a rear end of the main frame 7, which is located approximately in the center of both running wheels 4 in the left-right direction. A cutting blade frame 8 is suspended substantially perpendicularly downward from the main frame 7 and the lower end thereof is substantially in contact with the field surface, and a support is fixed between the middle part of the main frame 7 and the upper side of the cutting blade frame 8. The main frame 7 is integrally formed with a reinforcing frame 9, and a bracket 10 is further provided upwardly protruding from the rear end side of the main frame 7.
A pulley shaft 11a of a driven pulley 11 is rotatably supported on this bracket 10.
An interlocking belt 13 is suspended between the driven pulley 11 and a drive pulley 12 which is interlocked and connected to the engine 3 side, and the driven pulley 11 is rotated by the drive of the engine 3. There is.

In addition, 14 is a tension arm pivotably supported on the main frame 7, 15 is a tension pulley rotatably supported on the tension arm 14, and 16 is a tension arm that applies tension to the tension arm 15. 17 is a belt cover that covers these belt transmission mechanisms, and 18 is a driving handle.

On the other hand, 19 is on one side of the cutting blade frame 8 (the left side in this embodiment), and extends approximately the entire length in the vertical direction from the rear end position of the auxiliary frame 9 on the upper side to the approximately lower end of the cutting blade frame 8 on the lower side. The cutting blade 19 has a fixed blade 20 fixed to the side surface of the cutting blade frame 8 via a tightening bolt 20a, and a pin 20b protruding from the fixed blade 20. The movable blade 21 is slidably fitted into the hole 21a and can move up and down with respect to the fixed blade 20, but the pin shaft 21b protruding from the upper end of the movable blade 21 is a link. It is pivotally connected to the lower end of the arm 22 so as to be swingable. The upper end of this link arm 22 is pivotally connected to an eccentric shaft 23 that is integrally fixed to the pulley shaft 11a, and the eccentric shaft 23 rotates as the pulley shaft 11a rotates.
The movable blade 21 reciprocates up and down by rotation around the pulley shaft 11a, and the incisor 21c formed on the front side of the movable blade 21 and the front side of the fixed blade 20 make the movable blade 21 reciprocate up and down. By vertical movement relative to the incisor teeth 20c, the cutting operation can be performed over the full length of the blade. Here, 24 and 25 are presser bodies for attaching the movable blade 21.

Further, a sled body 26 that slides on the field surface is attached to the lower end of the cutting frame 8 so as to be able to swing vertically, and the front end of the cutting blade frame 8 protrudes forward and downward of the sled body 26. It is at a low level between the body 26 and the ground contact position of the running wheels 4, and plunges into the soil to an appropriate depth, and is trampled by the vines and running wheels that are shallowly rooted in the soil in the ridges. A pulling body 2 that slopes lower towards the front in order to pull up vines etc. that have crawled into the soil and guide them to the cutting blade 19.
7 is formed to protrude toward the front from a higher position than the sled body 26. Reference numeral 28 denotes a guide rod, and the front end of the guide rod 28 that comes into contact with the pulling body 27 is located at approximately the field position in side view as shown in FIG. In this embodiment, the cutting blade 19 is obliquely provided so that the rear end portion located on the left side is located approximately at the lower end position of the cutting blade 19.

In the embodiment of the present invention configured as described above, when harvesting sweet potatoes, when the traveling machine 1 is run between the furrows in order to cut the vines that are intricately intertwined and overgrown between the furrows, the overgrown vines are cut. The existing vines will be reliably cut and divided into furrows by the cutting blade 19 of the present invention without being entangled and jammed or forcibly pulled out. That is, the tendrils that are trampled by the running wheels 4 or pressed against the machine frame 2 as the traveling body 1 travels between the furrows are attached to the main frame 7 and the reinforcing frame 9 on the upper side.
Also, the lower side has a raising body 27 and a guide body 2.
However, the cutting blade 19 is not a circular saw blade as in the past, but a fixed blade 2 facing in the vertical direction.
0 and the movable blade 21,
The vine sent to the cutting blade 19 will be reliably cut and divided into ribs by the cutting blade 19, regardless of whether it is sent to the upper or lower position.

As described above, in the present invention, the vines that have grown thickly in the furrows are actively cut by a power drive, and the cutting blade 19 is a rotating circular saw blade as in the past. Unlike conventional cutting blades, it is constructed with a fixed blade 20 that is long in the vertical direction and a movable blade 21 that reciprocates in the vertical direction. The cutting performance does not change depending on the height position, and has substantially constant cutting performance at any position. Therefore, the vines will be cut in the same way no matter where they are sent, and as in the case of a circular saw blade, the vines will not get stuck or be forcibly pulled, resulting in sweet potato. There is no inconvenience such as being forcibly pulled out of the soil and getting bent or damaged. Furthermore, the front and back length of the cutting blade 19 can be extremely narrow, with cutting teeth 20c and 21c provided on the front side of each blade, and therefore the diameter of the circular saw blade can be increased to achieve the same effective cutting. The cutting blade 19 has no incisors at all on the rear side, which makes it possible to make the working machine extremely compact since it does not become long in the front-rear direction as would be the case if the cutting blade 19 is taller. This greatly simplifies safety measures for workers who walk behind the driver while holding the operating handle 18.

Moreover, the main frame 7 and the reinforcing frame 9 press and guide the vines that are lifted up again behind the fuselage frame 2 and try to escape upwards to the upper side of the cutting blade 19. Even tall objects can be cut without leaving any uncut parts. In addition, vines that have grown thickly by crawling across the field, have shallow roots in the soil, and even have grown into the soil due to failure to locate the running wheels, may have a front end with a sled. body 2
6, the raising body 2 is pulled out by the raising body 27 which is at a lower level and plunges into the soil.
7 and the guide body 28, and are guided to the lower side of the cutting blade 19 and cut, so that there is no uncut portion on the lower side. Further, as described above, the guide to the cutting blade 19 of the vine is provided by the main frame 7 and the reinforcing frame 9 of the working machine 6 following the machine frame 2 on the upper side, and by the pulling body 27 and the guide on the lower side. Since the cutting blade 1 is used for cutting by the body 28,
9 can be made shorter, so the working part 6 can be lowered.
This is convenient because it can further contribute to the downsizing of the system. Furthermore, a sled body 26 is provided below the cutting blade 19 to prevent the cutting blade 19 from penetrating into the soil, so the lower end of the cutting blade 19 can be positioned almost close to the field. As a result, the lifting angle of the pulling body 27 can be made gentle, and as a result, the forceful pulling out of the vines by the lifting body 27 can be prevented, and damage to root vegetables can be effectively prevented. .

[Operations and Effects] In short, the present invention is configured as described above, so that overgrowth in the furrows, such as vines that grow in a complicated manner between the furrows, is removed from the front side after being trampled by the running wheels. A cutting blade device consisting of a vertically long fixed blade and a movable blade that has incisors on both sides will actively cut the bushes that have been trampled by the running wheels. If an 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 incisor.
In addition, low, overgrown plants that have burrowed into the soil or spread their roots in the field due to the trampling of the running wheels should be treated with sloping plants whose front end is located forward and lower than the sled body and which extends into the soil. It is scooped up from the ground by the lifting body and is pulled up securely, and is guided by the lifting body to a position higher than the sled body and reaches the incisor without being caught by the sled body. Therefore, there is no need to take special care to avoid uncutting overgrowth that has risen high or sunk into the ground, and the cutting blade device can be moved backward from the aircraft frame. The cutting blade device can be arranged compactly below the work machine frame following the above.

In addition, the cutting blade device, which is constructed using a fixed blade and a movable blade that reciprocates up and down, has a working machine frame whose full length incisor teeth are disposed facing each other in the upper and lower directions, and which guide the overgrowth. and the pulling body, the guided overgrowth is immediately cut on the spot at any position above or below the cutting blade, and as a result, the incisor part can be made upright and cut as easily as possible. In addition to being able to shorten the length from front to back, the entire length can be used as the effective cutting length, so there is no need to make the length narrower to avoid attracting vegetation at both the top and bottom ends, unlike when using a circular saw blade. This allows the cutting blade device to be short and compact in the front and back direction on the underside of the work machine frame, but it can secure a wide effective cutting section in the vertical direction, making it suitable for use in areas with severe overgrowth. Even in the field, overgrowth can be cut smoothly and reliably.

[Brief explanation of the drawing]

The drawings show an embodiment of the furrow working machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a side view of the furrow working machine, and Fig. 3 is an exploded perspective view. FIG. 4 is an explanatory diagram of the operation seen from the back. In the figure, 1 is a traveling machine body, 4 is a traveling wheel, 6 is a furrow work machine, 7 is a main frame, 8 is a cutting blade frame,
9 is an auxiliary frame, 19 is a cutting blade, 20 is a fixed blade, 21 is a movable blade, 26 is a sled body, and 27 is a raising body.

Claims (1)

[Claims] 1. In a furrow working machine that works in the furrow area by being towed by a traveling machine body having running wheels that travel between furrows, a part extending rearward from the rear end of the body frame located behind the running wheels of the traveling machine body. A work equipment frame is provided, a cutting blade frame is vertically hung downward at the rear end of the work equipment frame, and a grounding guide for the cutting blade frame is installed at the lower end of the cutting blade frame. The front end is located forward and lower than the sled body, and between the ground contact position of the running wheels and the sled body, it is lower than the ground contact position of the running wheels, and the front end is immersed in the soil. The body is formed to protrude forward from a higher position than the sled body, and is lower in the front and higher in the rear, and the lifting body and the work equipment frame are disposed vertically opposite to each other. A cutting blade device is constructed using a fixed blade that is long in the direction and has an incisor formed on the front edge, and a movable blade that reciprocates up and down. The work equipment frame and the lifting body whose front end is immersed in the soil guide the vegetation trampled by the running wheels up and down. A furrow working machine characterized by being configured to cut along the entire length of the incisor.