JP6747891B2 - Walk-type ridge cross cultivator - Google Patents

Description

The present invention relates to a walk-behind cultivator for agriculture.

A normal walk-type cultivator has a narrow width, and it is run between ridges to cultivate one side of the ridges on both sides of the machine and finish one ridge in one reciprocation, but such a cultivator greatly improves work efficiency. I couldn't let it go.
On the other hand, for example, a walking type self-propelled harvesting device for performing harvesting work across ridges as in Patent Document 1 below has been proposed, but since the rotary is not attached, the device cannot be used for tilling work.

JP 2006-166881A

It is an object of the present invention to provide a ridge-type ridge-crossing type tiller of high working efficiency, which allows one ridge and the ridges on both sides to be simultaneously cultivated across the ridge.

In order to achieve the above-mentioned object, the walking type ridge crossing cultivator of the present invention has, on the left and right front parts of the base, vertically extending rotary legs that exceed the ridge height and project downward toward the front. , Rotary rotary shafts provided with plowing pawls on both left and right sides are pivotally attached to the lower parts of both rotary leg portions, and vertically long drive wheel legs exceeding the ridge height are provided on the left and right rear portions of the base. The drive wheels are projected downward, and the drive wheels are respectively attached to the lower portions of both drive wheel legs. The engine is mounted on the base and the left and right handles are rearward on either the left or right side of the rear part. And left and right rotary rotation drive shafts that distribute the rotation of the engine to the left and right and transmit the rotations of the engine to the left and right, respectively. A mission for transmitting the rotation of the rotary drive shaft to the rotary drive shaft is installed between the rotary drive shaft and the rotary shaft, and the rotation of the engine is either left-right or left-right between the left and right rotary drive shafts and the engine. Selective switching means for switching and transmitting to one of the rotary drive shafts for rotation is provided, and left and right drive wheel rotation drive shafts for distributing and transmitting the rotation of the engine to the left and right are provided above the legs for both drive wheels. The left and right drive wheel rotary drive shafts are respectively mounted with missions for transmitting the rotations of the drive wheel rotary drive shafts to the drive wheels between the left and right drive wheel rotary drive shafts. Between the shaft and the engine, there is provided selection switching means for switching the rotation of the engine to either the left or right drive wheel rotation drive shaft and transmitting the same.

According to a second aspect of the present invention, in the above invention, the rotary leg portion and the drive wheel leg portion are formed in a box shape, and a rotary and drive wheel mission is provided for the rotary leg portion and the drive wheel leg portion. It is characterized by being stored in the internal space.

According to a third aspect of the present invention, in the above invention, a rear support wheel is connected to the leg portion for the drive wheel, and a line connecting a lower end portion of the drive wheel and a lower end portion of the outer circumference of rotation of the tilling claw behind the drive wheel. It is characterized in that it is arranged via a support metal fitting that supports the lower end portion of the support metal at a position higher than the lower end portion, and a step is attached to a portion directly above the rear support wheel of the support metal fitting.

The walk-type ridge cross cultivator of the present invention is such that the drive wheels under the drive wheel legs on both sides of the base on which the engine is mounted and the rotary claws under the rotary leg portions straddle one ridge, and the ridges on both sides. It is possible to simultaneously cultivate both sides of the ridges and one side of the ridges on both sides of the ridges that have been straddled by the plowing claws. As a result, the four side faces of the ridge can be cultivated at the same time in one run, and thus the working efficiency can be significantly improved.
Further, the rotation of the engine can be switched to either the left or right rotary rotary shaft or the left and right rotary rotary shafts by means of the rotary and drive wheel selection switching means provided between the left and right rotary rotary drive shafts and the engine. It is possible to perform operations such as starting and stopping rotation of the claws simultaneously on the right and left sides or separately on the left and right sides, and it is possible to cultivate one side of the central ridge and the adjacent ridge by selecting either the left side or the right side.
As a result, it becomes possible to cultivate necessary ridges as efficiently as necessary while avoiding double cultivating.
Further, since the left and right plowing pawls and the drive wheels are widely opened to the left and right across the ridge and are supported by the four points of the front plowing pawls and the rear drive wheels, the machine body can be stably run.
On the other hand, since it is wide on the left and right, it may be difficult to change the direction by turning the aircraft, but since either the left or right drive wheel can be stopped by the drive wheel selection switching means, only one drive wheel can be stopped. It becomes possible to drive and make a sharp turn with a small radius of curvature.
Also, since the left and right steering wheels are attached to one of the left and right sides, the driver can drive comfortably in a natural posture while walking toward the front without twisting the body and walking in the furrows. ..

According to the invention of claim 2, the constituent parts of the mission are housed in the internal space of the rotary leg and the drive wheel leg without being exposed to the outside, so that the mission is protected from an external impact and the like, and between the parts. Accidents involving clothing etc. can be prevented and safety can be improved.

According to the third aspect of the invention, the rearward warp of the machine body caused by the reaction caused by the rotation of the tilling claw can be prevented by hitting the ground by the rear support wheel to support the machine body. Further, by putting weight on the steering wheel, the plowing claws are separated from the ground, and safe and stable driving can be performed by the left and right drive wheels and the left and right rear support wheels.
Also, by stepping on the platform with your foot, you can bid up the plowing side with the drive wheel as the fulcrum to the limited height until the rear support wheel hits the ground, so you can change the direction of movement such as moving to another ridge. It will be easy to do.

It is a rear view of the present invention. It is a side view of the present invention. It is a bottom view of the present invention.

An embodiment of a walk-behind ridge cultivator according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1 and FIG. 2, the present invention is provided with vertically long rotary legs 2 and 2 that exceed the height of a ridge U (indicated by a chain line in FIG. 2) on the left and right front portions of the base 1. As shown in FIG. 3, left and right rotary parts 4 and 4 are provided below the both leg parts 2 and 2 for the rotary parts, as shown in FIG. The rotary 4 has rotary legs 3 for rotation, which are pivotally attached to the lower parts of the rotary legs 2, 3 with left-side tillage claws 3a, 3b and right-side tillage claws 3c, 3d fixed to the upper side thereof. A rotary cover 19 that suppresses scattering of the soil is provided.
More specifically, the left-side tilling claws 3a and 3b have the left-side tilling claw 3a and the right-side tilling claw 3b fixed to both sides of the left rotary shaft 3, respectively. The right side tillage claws 3c and 3d have the left side tillage claw 3c and the right side tillage claw 3d fixed to both sides of the right rotary shaft 3, respectively. The centers of the rotary shafts 3 and 3 are pivotally attached to the lower portions of the rotary leg portions 2 and 2.
Further, in front of the left rotary 4 and the right rotary 4, the tilling depth adjusting wheels 24, 24 for adjusting the tilling depth by vertically adjusting the tilling depth adjusting lever 20 at the upper portion are respectively attached.

Further, on the left and right rear portions of the base 1, vertically elongated drive wheel legs 5 and 5 exceeding the ridge height U are provided so as to project obliquely forward and downward, respectively. The drive wheels 6 and 6 are attached to the lower portions of 5 and 5, respectively.
As shown in FIG. 2, the two rotary leg portions 2 and 2 and the two drive wheel leg portions 5 and 5 are provided on the lower portion of the base 1 in an upright state when viewed from the front-rear direction and straddle the ridge U, Further, as shown in FIG. 1, they are mounted substantially parallel to each other when viewed from the side.
When the upper parts of the rear drive wheel legs 5 and 5 are fixed to the central part of the base 1, the fixed parts are directed downward or obliquely rearward from the fixed position without tilting forward. You may make it protrude below.

The base 1 is made of iron, and as shown in FIGS. 1, 2 and 3, a main frame 1a and a base plate 1b for mounting the engine 7 in the center of the main frame 1a, and the base plate 1b. A mode in which the base plate support frame 1c for fixing to 1a is integrally fixed by welding is possible.
In this embodiment, the base plate supporting frame 1c is also formed in a U shape, and a pair of parallel upper ends are connected to the lower part of the main frame 1a with a space therebetween, and the base plate 1b is connected to both the base plate supporting frames 1c. Build in between.

Since the rotary leg portions 2 and 2 and the drive wheel leg portions 5 and 5 fixed to the lower portion of the main frame 1a are long downward, welding and bolts are performed by using various support frames and support plates so as not to swing forward and backward. Etc. can be reinforced.
Reference numeral 22 in FIG. 1 is a reinforcing support frame 22 for fixing the rotary leg portion 2 and the drive wheel leg portion 5 to each other.
The engine 7 is mounted on the base plate 1b of the base 1, and the engine 7 is fixed to the base plate 1b with bolts or the like.
Considering the balance of the entire machine, the engine 7 has a load such as the rotary 4 and the plowing depth adjusting wheel 24 on the front side, so it is mounted on the rear part of the base 1, and the center of gravity of the entire machine is the drive wheel 6. Adjust the fixed position back and forth so that it is directly above.
The weight of the machine body including the engine 7 is applied to the drive wheels 6 to reduce the weight burden of the steering wheel operation such as raising and lowering the rotary 4 to enable easy driving.

As shown in FIG. 1, selection switching means 13 and 14 such as clutches for switching rotation transmission are provided above the rotary leg portions 2 and 2 and the drive wheel leg portions 5 and 5, respectively. The left and right rotary rotary drive shafts 8 and 8 and the left and right drive wheel rotary drive shafts 9 and 9 which respectively distribute the rotation of the engine 7 to the left and right simultaneously or separately are transmitted.
If the left and right rotary rotary drive shafts 8, 8 and the left and right drive wheel rotary drive shafts 9, 9 are a single shaft that is not separated, the rotation cannot be switched to rotate the left and right separately. Not used in.

The left and right rotary rotary drive shafts 8, 8 to which the rotation from the engine 7 is transmitted are further transmitted to the left and right rotary rotary shafts 3, 3 to the both rotary leg portions 2, 2. Missions 10 and 10 are provided.
Further, the left and right drive wheel rotation drive shafts 9, 9 to which the rotation from the engine 7 is transmitted are further transmitted to the left and right drive wheels 6, 6 to the both drive wheel legs 5, 5. A mission 11 is provided.

Further, the rotary leg portion 2 and the drive wheel leg portion 5 are formed in a box shape, and the missions 10 and 11 are all housed in the internal space of the rotary leg portion 2 and the drive wheel leg portion 5. be able to.
In this mode, since the operating parts of the missions 10 and 11 are not exposed to the outside, the missions 10 and 11 are protected from external impacts and the like, and accidents such as clothes getting caught between the mission parts are prevented.

In the present invention, the transmission path of the rotation of the engine 7 to each part is divided into the rotary 4 side on the front side of the base 1 and the drive wheel 6 side on the rear side of the base 1 as described above.
On the rotary 4 and 4 sides on the front side of the base 1, the rotation of the engine 7 is controlled by the rotary drive shafts 8 and 8 and the missions 10 and 10 to rotate the left side tillage pawls 3a and 3b and the right side shown in FIG. Is transmitted to each of the left and right rotary shafts 3 and 3 provided with the plowing claws 3c and 3d, and the rotation of the engine 7 on the drive wheel 6 side on the rear side of the base 1 is the drive wheel rotary drive shaft 9, It is transmitted to the left drive wheel 6 and the right drive wheel 6 shown in FIG. 3 via 9 and the missions 11 and 11, respectively.

In the transmission path to the rotary 4, the left and right tillage claws 3a and 3b and the right tillage claws 3c and 3d shown in FIG. The rotary selection switching means 13 is provided.
The rotary selection switching means 13 has a structure in which a clutch or the like can be switched between the engine 7 and the rotary drive shafts 8 and 8, and the rotary connection by the clutch or the like and the stop of the connection are performed. The rotary shafts 3 and 3 can be respectively rotated and stopped, and the left side tillage claws 3a and 3b and the right side tillage claws 3c and 3d can be switched between left and right simultaneous start and stop of rotation. Is possible.

Further, in the transmission path of the drive wheels 6 on the rear side of the base 1, the left, right and left drive wheels 6 shown in FIG. A drive wheel selection switching means 14 for switching control is provided.
The drive wheel selection switching means 14 has a mechanical structure such as a clutch that can be switched between the engine 7 and the drive wheel rotary drive shafts 9, 9, and the rotary connection by the clutch and the like. When the connection is stopped, the drive wheels 6 and 6 can be rotated and stopped, respectively. The left drive wheel 6 and the right drive wheel 6 can be rotated simultaneously at the left and right sides and separately at the left and right sides. It is possible to switch.

As shown in FIG. 3, the operation of the selection switching means 13 and 14, the rotational speed of the drive wheels, and the like is performed by the operation panel 25 provided on the handle 12, the operation lever 26, the operation lever 27 provided at the rear of the base, and the like. Can be done at.

The rotary rotary drive shaft 8 and the drive wheel rotary drive shaft 9 are provided on a bearing portion 23 provided at a position lower than the main frame 1a, as shown in FIG.
The engine 7 on the base plate 1b is provided at a position close to the rotary rotary drive shaft 8 and the drive wheel rotary drive shaft 9 below the main frame 1a, so that the engine 7 can rotate the rotary drive shafts 8 and 9 together. It is possible to compactly provide the missions 10 and 11 and the selection switching means 13 and 14 that transmit rotation to the.

Then, as shown in FIG. 3, left and right handles 12 are provided so as to project rearward at one of the left and right sides of the rear portion of the base 1.
The handle 12 is fixed to the rear portion of the base 1 at a height that matches the height of the driver, and the fixing position of the handle 12 to the base 1 is, as shown in FIG. Being behind the vehicle allows the driver to stand on the rear side of the left drive wheel 6 traveling through the furrow and walk through the furrow with the body facing forward.

Further, a rear support wheel 15 is provided below the drive wheel leg 5 via a support fitting 16 behind the drive wheel 6 and at the lower end A of the drive wheel 6 and the lower end of the outer circumference of rotation of the plowing pawl. The lower end portion is arranged above the line X connecting the portion B.
Then, the step 17 is attached to a portion directly above the rear support wheel 15 of the support fitting 16.
Due to the positional relationship among the lower end portion A of the drive wheel 6, the lower end portion B of the outer circumference of rotation of the tilling claw, and the rear support wheel 15, when the footrest 17 is stepped on with a foot, the rear support wheel 15 Lowers until it hits the ground, and the lower end B of the outer circumference of rotation of the plowing pawl rises with the lower end A of the drive wheel 6 as a fulcrum and moves away from the ground.

In this form, when the vehicle body warps backward due to the reaction of the rotation of the tilling claw during cultivating, it is possible to prevent a fall accident caused by the rear support wheel 15 hitting the ground and the vehicle body largely curving backward.
Further, when traveling on the road, by applying weight with the handle 12, the four-wheel traveling can be stably performed while separating the tiller from the ground and rotating the rear support wheel 15.
Further, by stepping on the foot 17 with the foot, the rear support wheel 15 bids the plowing claw high until it hits the ground, so that it is possible to easily change the traveling direction without receiving the resistance of the plowing claw.

In FIG. 1, reference numeral 21 is a height adjusting lever 21 provided above the rear support wheel 15, and the height of the rear support wheel 15 separated from the ground can be adjusted by rotating the lever 21. It can be so.

Further, a flat work table 18 can be provided on the main frame 1a above the base 1, and work tools, clothes and the like can be placed on the work table 18 without being soiled.

Next, a method of using the present invention will be described.
When cultivating farmland with the main cultivator, as shown in FIG. 2, the left cultivating claws 3a and 3b and the left and right drive wheels 6 and 6 are arranged across the ridge U, and the right side is arranged on the right side, as shown in FIG. The right plowing claws 3c and 3d and the right driving wheels 6 and 6 are arranged between the ridges, and the driver is provided with either the left or right steering wheel (FIG. 2 shows a mode in which the steering wheel is provided on the left side). After entering the furrow and operating the handle 12 and the operation levers 26 and 27 on the rear side of the base 1, the grips of the left and right handles 12 are held to walk through the furrow.

Then, the drive wheel selection switching means 14 is operated to switch the operation levers 26 and 27 so that the drive wheels 6 and 6 on both sides are simultaneously rotated and moved straight. In this case, the left side tillage claws 3a and 3b are moved. Rotate the right plowing claws and 3c and 3d at the same time to start plowing across the first ridge of the farmland, and when moving to the next ridge, one side of the next ridge has already been ploughed so Skip one and move to the next ridge.
After that, the ridges are successively run every other ridge, and the last ridge of the farmland is cultivated by straddling it to complete the cultivating work on one farmland.
In this work, both sides of one ridge and the side faces of the ridges on the left and right of the ridge can be cultivated at the same time, so it is possible to cultivate with double the efficiency as compared with the conventional cultivator that does not straddle the ridge. ..

In addition, the shape of the ridge is basically close to a straight line, but in the case of a curved ridge that is restricted by the topography of the agricultural land, the width between the left and right drive wheels 6, 6 crosses the ridge is wide, so along the curved ridge. Although it is difficult to change the direction to the left or right, in the present invention, by switching the selection switching means 14 for the drive wheels, only one of the left and right drive wheels 6, 6 is rotated and the other is stopped. It is possible to easily perform the tilling work along the ridges depending on the bending state of the ridges on either side.

Further, it is possible to cultivate efficiently by selecting any one of the left and right tillage claws 3a, 3b, 3c, 3d for correcting work such as ridges left after tilling and ridges having an insufficient tillage state.

When the end of each ridge is reached during plowing, the ridge must be moved to another ridge in order to be folded back. In that case, at the folding position where the ridge is moved to another ridge, the drive wheel selection switching means 14 is used. The drive wheels 6 and 6 are stopped, and all the rotations of the plowing pawls 3a, 3b, 3c and 3d are stopped by the rotary selection switching means 13, and the foot 4 on the turning direction side is weighted to lift the rotary 4. Next, when the drive wheel selection switching means 14 is operated to operate only the drive wheel 6 on the side opposite to the turning direction, the stopped drive wheel 6 turns to the center of the machine body, so that it is turned to the next ridge. After turning to the position, the driving wheels 6, 6 on both sides are simultaneously rotated to move forward to straddle the ridges, the plowing claws 3a, 3b, 3c, 3d are all rotated, and the foot is lowered from the step 17 to perform plowing work. continue.

Further, when the cultivator is moved on farmland or road without cultivating, the left and right handles 12 held in the hands are weighted and the rear support wheels 15 are lowered so as to be pressed against the ground for walking operation.
At this time, when the weight is applied to the handle 12 so that the rear support wheel 15 lightly touches the ground, the plowing claws 3a, 3b, 3c, 3d are separated from the ground with the drive wheel 6 as a fulcrum, so that smooth movement is possible.
When the vehicle is going straight, the drive wheels 6 and 6 on both sides may be simultaneously rotated by the selection of the drive wheel selection switching means 14. However, when the vehicle makes a turn, the drive wheel 6 on the turn side is stopped. You can easily turn right or left.

Further, by stepping on the rear support wheel 15 and raising the tilling claws 3a, 3b, 3c, 3d from the ground with the drive wheel 6 as a fulcrum, it becomes easy to replace or wash each tilling claw 3a, 3b, 3c, 3d.
The operation of the cultivator can be stopped by stopping the engine 7, but the selection switching means 13 for the rotary and the selection switching means 14 for the drive wheels are stopped while the engine 7 is still rotating during the cultivating work. By switching to, it is possible to temporarily stop the operation of the tiller.

The walk-behind ridge cultivator of the present invention is mainly used as a walk-type cultivator, but it can also be used as a management machine that performs work such as ridge formation other than cultivating work.

1 Base 1a Main Frame 1b Base Plate 1c Base Plate Support Frame 2 Rotary Legs 3 Rotary Rotating Shafts 3a, 3b Left Plowing Claws 3c, 3d Right Plowing Claws 4 Rotary 5 Drive Wheel Legs 6 Drive Wheel 7 Engine 8 rotary rotary drive shaft 9 drive wheel rotary drive shaft 10 rotary mission 11 drive wheel mission 12 handle 12a left handle 12b right handle 13 rotary selection switching means 14 drive wheel selection switching means 15 rear support Wheel 16 Support bracket 17 Step 18 Work table

Claims (3)

At the front part on both the left and right sides of the base, vertically extending rotary legs that exceed the ridge height are projected downward toward the diagonal front, and the plowing claws are provided on the left and right sides at the lower part of both rotary leg parts. Rotary rotary shafts are pivotally connected to each other, and vertically elongated drive wheel legs exceeding the ridge height are provided at the rear portions of the left and right sides of the base so as to project downward, and drive wheels are provided below the drive wheel legs. Distribute each,
The engine is mounted on the base, and the left and right handles are projected rearward to one of the rear left and right sides,
Left and right rotary rotation drive shafts that distribute the rotation of the engine to the left and right are respectively disposed above the rotary leg portions, and between the left and right rotary rotation drive shafts and the left and right rotary rotation shafts. Each of them is equipped with a mission for transmitting the rotation of the rotary rotation drive shaft to the rotary rotation shaft, and between the left and right rotary rotation drive shafts and the engine, the rotation of the engine is either left or right or left or right. Equipped with a selection switching means for switching to the drive shaft to enable transmission,
Left and right drive wheel rotary drive shafts that distribute the rotation of the engine to the left and right are respectively disposed above the two drive wheel legs, and the left and right drive wheel rotary drive shafts and the left and right drive wheels are provided. A transmission for transmitting the rotation of the drive wheel rotation drive shaft to the drive wheels is installed between the two, and the engine rotation is either left or right or left or right between the left and right drive wheel rotation drive shafts and the engine. A walking-type ridge-crossing tiller equipped with a selection switching means for switching and transmitting to the drive wheel rotation drive shaft. The rotary leg and the drive wheel leg are formed in a box shape, and the rotary and drive wheel missions are housed in the internal space of the rotary leg and the drive wheel leg. The walk-type ridge crossing tiller according to Item 1. The rear support wheel is supported on the drive wheel leg at a position rearward of the drive wheel, at a position where the lower end is higher than the line connecting the lower end of the drive wheel and the lower end of the outer circumference of rotation of the plowing pawl. The walk-behind ridge crossing cultivator according to claim 1 or 2, wherein the footrest is disposed via a support fitting, and a step is attached to a portion directly above a rear support wheel of the support fitting.

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