JPH0437389Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a vine cutting machine that is connected to agricultural management machines, tailors, etc. The present invention relates to a safety device for a mozuru cutter that is designed to cut with a cutting blade section arranged in a direction.

[Prior art]

As a safety device for this type of potato vine cutting machine, for example, Japanese Utility Model Application No. 61-122646 has been proposed.
However, in the imozuru cutting machine of this publication, the cutting blades arranged in the vertical direction are covered by a safety cover while stored, but since it is necessary to operate the cutting blades during work, the safety cover is was designed to be removed from the cutting blade.

For this reason, during the work, the cutting blade and the cutting blade drive mechanism consisting of a crank arm and a rod that drive the cutting blade are both exposed.

[Problem that the invention aims to solve] If the cutting blade drive mechanism that drives the cutting blade is exposed during work, the vines that grow thickly and intertwine with each other in the furrows can easily move from the crank arm and rod. It gets caught in the cutting blade drive mechanism and pulls the sweet potato vine, so the sweet potato in the soil is forcibly pulled out, and the sweet potato that is forcibly pulled out comes into contact with the movable cutting blade, etc., and the sweet potato vines are pulled out. There was a problem in that the sweet potatoes were damaged when the sweet potato vines were picked off and the sweet potatoes lost their commercial value.

In addition, if a safety cover is provided, the safety cover must be attached and removed each time when cutting work or when driving on the road (storage), which is cumbersome and time-consuming. There was a problem.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and includes a safety cover that covers from the cutting blade part to the cutting blade drive mechanism, and covers the upper cutting blade drive mechanism during work. This cutting machine exposes only the lower cutting blade when the cutting blade is in the open position, which prevents the cutting blade from getting caught in the cutting blade drive mechanism, and also prevents accidental contact with human bodies when driving on the road (stored) or moving around the field. The purpose is to provide a safety device.

[Means to solve the problem]

The present invention achieves the above object by driving the vertical cutting blade part of the potato cutting machine by a cutting blade drive mechanism provided above, and disposing the cutting blade part in the vertical direction so as to cover the cutting blade drive mechanism and the cutting blade part. The safety cover installed
The safety device for the potato cutter is configured so that the mower blade is exposed by being moved back around the upper fulcrum by the ground resistance at the lower end.

[Effect]

Therefore, although the safety cover 35 is capable of simultaneously covering the lower cutting blade section 25 and the upper cutting blade drive mechanism 30, the safety cover 35 is moved back due to ground resistance during work, and the upper cutting blade part 25 is The cutting blade drive mechanism 30 remains covered, and the cutting blade part 2 on the lower side
5 can be exposed, it is possible to reliably prevent the vine from getting caught in the cutting blade drive mechanism 30, and prevent the sweet potato from being pulled out and damaged.

This safety cover 35 is centered around the upper fulcrum shaft 32, and the cutting blade portion 25 increases in size as it goes downward.
Therefore, the cutting blade part 25, which is exposed more downwardly, can smoothly cut the caterpillars entangled between the furrows.

This safety cover 35 does not require any switching operations depending on whether the vehicle is working or traveling on the road, and the cutting blade portion can be automatically exposed due to ground resistance.

〔Example〕

Next, one embodiment of the present invention will be described in detail based on the drawings.

In Fig. 5, reference numeral 1 denotes a running machine such as a farm management machine, Teira, in which an engine 3 is mounted on a body frame 2. Driven by the engine 3, running wheels 4 arranged on both the left and right sides rotate. By doing this, I am learning to run. A hitch portion 5 provided at the rear end of the traveling body 1 is connected to a front end portion of a potato vine cutter 10, which will be described later, by a hitch pin 7 or the like. The rear end of the control handle 6 whose base end is fixed to the traveling body 1 extends rearward.

The above-mentioned mozuru cutting machine 10 is configured as follows. That is, the main frame 11 is disposed so as to be located in the center between both running wheels 4 in plan view, and whose front end is detachably connected to the hitch part 5 and extends rearward and upward.
A cutting blade frame 12 which is hung substantially vertically downward from the rear end of the cutting blade frame 1 and whose lower end touches the field is integrally connected to the cutting blade frame 12 by a reinforcing frame 13.

A driven shaft 15 to which a driven pulley 16 is fixed is rotatably supported by a bracket 14 fixed to the rear end side of the main frame 11 and protruding upward. A V-belt 19 is wound around the pulley 17, and the outside of the V-belt 19 is covered with a belt cover 18.

A tension clutch 20 is provided opposite to this V-belt 19 and is swingable between an entry position and a cut-off position using the main frame 11 side as a fulcrum. By being relaxed, the driven pulley 16 continues to rotate.

In FIGS. 1 and 2, the cutting blade frame 1
2 includes a fixed blade 21 fixed vertically to one side of the cutting blade frame 12, and a movable blade 22 superimposed on the side of the fixed blade 21 via a cutting blade holding rod 23. A clipper-type cutting blade section 25 is equipped, and the other end of a rod 26 whose lower end is pivotally connected above the movable blade 22 is connected to the driven shaft 1.
Eccentric shaft 28 of crank arm 27 fixed to 5
This crank arm 27
When the eccentric shaft 28 rotates about the driven shaft 15, the movable blade 22 slides vertically with a predetermined stroke, thereby cutting the caterpillar.

Further, at the lower end of the cutting blade frame 12, there are provided a sled body 34 that slides on the field, and a pulling body 31 that extends in front of the sled body 34 and whose tip plunges into the soil by a predetermined depth. The lifting body 31 lifts up the caterpillar vines that are shallowly rooted in the soil and guides them to the cutting blade part 25.

A fulcrum shaft 32 provided above the bracket 14
A safety cover 35 is disposed which can swing freely around the mower, and this safety cover 35 connects a mower blade drive mechanism 30 consisting of a crank arm 27 and a rod 26 disposed above and a mower blade section disposed below. The sled section 25 is hung substantially vertically downward so as to cover the side surface of the sled section 25, and its front lower end P is provided so as to face into the soil by a predetermined depth from the bottom surface of the sled section 34. The same effect can be achieved if the P portion facing the soil is not an extended end of the safety cover 35 but a portion pierced into the soil that retreats due to ground resistance.

This safety cover 35 has a coil spring 36
The bullet is held forward by the safety cover 3.
5. When driving on the road (retracted) where there is no ground resistance at the lower end, the stopper 3 is installed at a position that covers the sides of the cutting blade drive mechanism 30 and the cutting blade part 26, as shown by the solid line.
7 and is held in a safe position.

During work where the front lower end point P on the way is subjected to ground resistance as the traveling body 1 moves forward, the front lower end P of the safety cover 35 is rotated around the fulcrum shaft 32.
The point moves backward, and as shown by the chain line, the safety cover 35 continues to cover the cutting blade drive mechanism 30 and automatically retreats to the working position where the cutting blade 25a of the cutting blade part 25 is exposed, and the stopper (Fig. outside) and is held in the working position.

In this working position, the safety cover 35 is centered around the upper fulcrum shaft 32, and the mower blade portion 25 is larger downwardly.
This allows the cutting of the caterpillars to be carried out smoothly. In addition, since the caterpillar cutting machine 10 is lifted when the machine turns, the safety cover 35, which is not subject to ground resistance, automatically restores to the safety device shown by the solid line by the force of the coil spring 36, ensuring safety. can.

As shown in detail in FIGS. 3A and 3B, this safety cover 35 has a front wall 35a, a top wall 35b, and a rear wall 35c that are continuous from above to a position covering the cutting blade drive mechanism 30. The cutting blade frame 1 is formed to protrude toward the cutting blade frame 12 side.
2 prevents the caterpillar from being caught in the cutting blade drive mechanism 30.

In addition, as shown in another example in Fig. 4, the safety cover 3
Using the front wall 35a of No. 5, this front wall 35a
Then, the mounting wall 41 of the safety cover 40 covering the opposite side of the safety cover 35 is overlaid and fixed with screws, nuts, etc. through a plurality of mounting holes provided on both sides, and the cutting blade part 25 is attached to the safety covers on both the left and right sides. 35, 40 may further improve safety. The lower end of this safety cover 40 is formed shorter than the lower end of the safety cover 35 by a height T so as not to be exposed to the soil.

[Effect of idea]

In short, the safety device of the potato cutting machine according to the present invention drives the vertical cutting blade part of the potato cutting machine by the cutting blade drive mechanism provided above, and the cutting blade drive mechanism and the cutting blade part are connected to each other. The safety cover, which is arranged vertically to cover the area, is moved back around the upper fulcrum by the ground resistance at the lower end, exposing the cutting blade. Although this safety cover can simultaneously cover the upper mower blade drive mechanism, the safety cover is moved back due to ground resistance during work, leaving the upper mower drive mechanism covered while the lower mower drive mechanism is covered. Since the cutting blade part can be exposed, it is possible to reliably prevent the cutting blade from getting caught in the cutting blade drive mechanism, and it is possible to solve the problem of the sweet potato being pulled out being damaged and losing its commercial value.

In addition, the safety cover allows the cutting blade portion to be exposed to a larger extent as it goes downwards from the upper fulcrum, allowing the cutting blade portion, which is exposed larger toward the bottom, to smoothly cut the caterpillar vines that are entangled in the furrows. can do.

Furthermore, the safety cover does not need to be switched between when working and when driving on the road, and the cutting blade section can be automatically exposed using ground resistance to prevent accidental contact with the human body. can.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Figure 1 is a side view of the potato vine cutting machine, Figure 2 is a rear view of the potato vine cutting machine, Figure 3 A is a side view of the safety cover, and Figure 3 B is the safety cover. FIG. 4 is a rear view of the cover, FIG. 4 is a perspective view of another example of the safety cover, and FIG. 5 is an overall side view of a state in which a sliver cutter is connected to the traveling machine body. 10... Imozuru cutting machine, 25... Cutting blade section, 2
9...rod, 27...crank arm, 30...
...Mower blade drive mechanism, 35...Safety cover, 32...
Upper fulcrum axis.

Claims (1)

[Scope of utility model registration request] The vertical cutting blade part of the potato cutting machine is driven by the cutting blade drive mechanism installed above, and the safety cover arranged vertically to cover the cutting blade drive mechanism and the cutting blade part is connected to the upper fulcrum. A safety device for a caterpillar cutter that is constructed so that the cutting blade part is exposed by retreating due to the ground resistance at the lower end of the center.