JPH0518521B2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is used for wheat trampling, which is one of the important operations for wheat, in which seeds are sown in autumn and harvested in early summer. Regarding the barley treading device.

The purpose of wheat trampling is to step back the roots of wheat that have been pushed up by frost pillars, to strengthen the soil so that the soil around the roots will not be blown away by the wind, and to prevent damage to the stems and leaves caused by wheat trampling. This is done to strengthen the wheat itself, as water is lost from the wound, which suppresses the rise in water from the roots, and the above-ground tissues change to a xerotic form, increasing cold resistance.

(Prior art) Conventional wheat treading devices include tractors,
BACKGROUND ART A roller-shaped wheat treading device that is towed by a self-propelled vehicle such as a power tiller is known.

This barley treading device includes a machine frame provided with a connecting member,
It consisted of a roller rotatably mounted on the machine frame, and when pulled by a self-propelled vehicle, the roller was rotated by ground friction, and the wheat was trodden by the roller's own weight.

(Problems to be Solved by the Invention) However, with such a conventional barley treading device, barley treading can be carried out without any problem when the soil surface is flat, but if there is a convex part due to stones etc. In this case, the roller rides on the convex portion, causing the entire roller to float, resulting in a portion where the wheat is not trodden, resulting in the problem that the wheat treading cannot be done sufficiently as a whole.

(Means for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned conventional problems. A machine frame equipped with a connecting means to be connected to a vehicle, a wheel provided on the machine frame that rotates due to ground friction, and a crank mechanism to which the rotational force of the wheel is transmitted via a transmission means.
A conversion mechanism that converts rotational motion of the crank mechanism into vertical motion on the input side and vertical movement on the output side, and a barley stepping mechanism that moves up and down via the conversion mechanism, and the barley stepping mechanism includes a base and a plurality of barley stepping bodies. The base is pivotally supported on the output side of the conversion mechanism, and a plurality of barley stepping bodies are provided at the bottom of the base so that they can be raised and lowered independently, and each barley stepping body is always directed downward by a spring. We adopted a configuration that is energized by

(Function) Therefore, in the wheat stepping device of the present invention,
With the above-mentioned configuration, the rotational force of the wheels becomes the driving force, and the wheat stepping mechanism can be moved up and down via the transmission means, crank mechanism, and conversion mechanism, and this vertical movement allows for effective wheat stepping. able to perform work.

In this case, the wheat stepping mechanism consists of a base and a plurality of wheat stepping bodies, the base is pivotally supported on the output side of the conversion mechanism, and the plurality of wheat stepping bodies are provided at the bottom of the base so that they can be raised and lowered independently. In addition, each barley tread is configured to be constantly biased downward by a spring, so even if there is a convex part such as a stone on the soil surface, each barley tread will maintain the height of the soil surface on which it touches the ground. Since the height of the barley is changed independently depending on the height of the barley, the number of areas where the barley stamping is insufficient is extremely reduced, and the barley stamping effect can be made uniform.

In addition, since the input side of the conversion mechanism that moves the barley stepping mechanism up and down is rotational movement by a crank mechanism,
Stepping will be performed at the top dead center or bottom dead center of the crank arm, and since these top dead centers and bottom dead centers are instantaneous, the grounding of the stepping mechanism is also instantaneous, so the self-propelled vehicle As the barley stepping mechanism remains in contact with the ground, it is not dragged, and barley stepping can be carried out continuously without cutting or damaging the wheat.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration of the first embodiment will be explained.

In addition, in describing this embodiment, the self-propelled vehicle P
Let us take as an example the wheat treading device A when using a tractor Pa equipped with a rotary R.

The barley treading device A of the first embodiment is shown in FIGS. 1 to 7.
As shown in the figure, the main components are a machine frame 1, a connecting means 2, wheels 3, a transmission means 4, a crank mechanism 5, a conversion mechanism 6, and a barley stepping mechanism 7.

The machine frame 1 consists of a vertical frame 10 and a horizontal frame 11. The horizontal frame 11 has a mounting frame 12 on the upper surface of its base end, and the vertical frame 10 has a mounting frame 12 on the upper surface of the mounting frame 12. The base end portion is supported by a support shaft 13.

Note that 14 is a turnbuckle.

The connecting means 2 connects the wheat stepping device A to the tractor Pa.
In this embodiment, a cylindrical connecting member 20 is used, and the connecting member 20 is provided approximately horizontally on the upper surface of the vertical frame 10. A fixing screw 21 is provided on the side surface of the member 20 to fix it to a support arm a that supports a rotary R attached to a tractor T.

The wheel 3 rotates due to ground friction, and is provided with an axle 30 pivotally supported within a mounting frame 12 provided on the horizontal frame 11.

The transmission means 4 transmits the rotational force of the wheel 3 to a crankshaft 50, which will be described later. In this embodiment, a belt 42 is provided between a large pulley 40 on the wheel 3 side and a small pulley 41 on the crankshaft 50 side. is being set up.

Note that 43 is a tension roller.

The crank mechanism 5 includes a crankshaft 50 that is pivotally supported on the upper part of the vertical frame 10, and a crankshaft 50 that is
A small pulley 41 constituting the transmission means 4 is attached to one end of the crankshaft 50.

The conversion mechanism 6 receives the rotational motion of the crank mechanism 5 on the input side and converts it into vertical motion on the output side. In this embodiment, the conversion mechanism 6 is composed of a connecting link 60 and a lever link 61, and the connecting link 60 is connected to both ends thereof. The lever link 61 has its middle portion supported by a support shaft 64 at the tip of the horizontal frame 11, and , the free end side extends from the tip of the horizontal frame 11.

The wheat stomping mechanism 7 performs wheat stomping by vertically moving the rotational movement of the crank mechanism 5 via a conversion mechanism 6, and includes a base 8 and a plurality of wheat stomping bodies 9.

The base 8 consists of a connecting plate 80 and a support plate 81. The connecting plate 80 is supported by a support shaft 82 on the free end side of the lever link 61, and the support plate 81 has a through hole 8.
3 are provided, and a guide tube 84 having a larger inner diameter than the through hole 83 is provided at the upper part of the through hole 83, and a vertically elongated guide hole 8 is provided in the front of the guide tube 84.
5 is provided.

The barley tread body 9 is attached to the lower part of the base 8 so as to be movable up and down, and includes a column 90 and a barley tread plate 91.
The pillar 90 is provided with a horizontal plate 92 at the lower end, and vertical plates 93 are provided on the lower surface of both ends of the horizontal plate 92, and the barley tread 91 has a rubber plate on the lower surface of a substantially square iron plate 94. 95 is fixed with bolts 96, and a shaft support member 97 is provided on the central upper surface of the iron plate 94, and is pivotally supported on the vertical plate 93 by a support shaft 98 perpendicular to the direction of movement.

The bar 99 is formed so that the front side of the barley tread plate 91 does not cut or damage the barley in the movement range from stepping on the barley on the curved side to the next barley.

The barley tread body 9 is constructed by inserting the upper part of the support 90 into the guide tube 84 through the through hole 83 of the support plate 81, fitting the collar 86 therein, and inserting the collar 86 into the collar 86 from the outside of the guide hole 85 provided in the guide tube 84. The collar 86 is fixed to the support column 90 with a screwed fixing screw 87.
Note that a coiled spring 88 is installed in advance on the support column 90 in a slightly pressed state.

In addition, 100 is a vibration prevention member that restricts the vibration of the barley tread body 9 with respect to the lever link 61 when the base 8 rotates up and down, and two links 10 are used.
It consists of 1,101. In this case, each link 1
01 and 101, lever link 61,
It is pivotally supported by a connecting plate 80, and the other ends are pivotally supported by a supporting shaft 102, and the supporting shaft 102 is squeezed between the lever link 61 and the connecting plate 80 to limit forward swinging. The lengths of the links 101, 101 limit the backward swing.

Further, reference numeral 103 in the figure is a stopper that limits the range of rotation of the barley tread 91 with respect to the support column 90. A scraper 104 serves to remove mud adhering to the wheels 3. Reference numerals 105 and 105 are height adjustment holes of the barley stepping mechanism 7, and reference numeral 106 is a rotation range adjustment hole of the barley stepping mechanism 7.

Here, the height of the barley stepping mechanism 7 is adjusted by changing the angle of the horizontal frame 11 with the turnbuckle 14 with respect to the vertical frame 10 fixed to the support arm a supporting the rotary R by the connecting member 20. By changing the height of the support shaft 64 that supports the midway portion, the height of the wheat stepping mechanism 7 can be adjusted accordingly. At this time, since the tension of the belt 42 of the transmission means 4 changes, it is adjusted by the tension roller 43.

Next, the operation of the wheat stepping device A of the first embodiment will be explained.

First, the cylindrical connecting member 2 provided on the upper surface of the vertical frame 10 of the machine frame 1 is fitted onto the support arm a that supports the rotary R attached to the tractor T, and the fixing screw 2
1, and the support arm a is lowered by the hydraulic device O to ground the wheels 3 provided on the machine frame 1.

At this time, since the rotary R is not used, the lever 107 provided on the support arm a is rotated to rotate the rotary R.
Pull it upward to prevent it from touching the ground.

As described above, the wheat treading device A is attached to the tractor T.
When the tractor T is moved forward by connecting the
The wheels 3 provided on the ground rotate due to ground friction, and the large pulley 40 also rotates, and the rotational force is transferred to the belt 42.
The crankshaft 50 is rotated by being transmitted to the small pulley 41 via the crankshaft 50, thereby rotating the crank arm 51. The rotational movement of the crank arm 51 is achieved by vertically moving one end of the lever link 61 via the connecting link 60, thereby vertically moving the free end side of the lever link 61 about a support shaft 64 that pivotally supports the midway portion of the lever link 61. It turns out.

In this case, when the crank arm 51 rises and overlaps the connecting link 60 (top dead center), the free end side of the lever link 61 is pushed down the most, and the crank arm 51 and the connecting link 60 are aligned in a straight line. When extended (bottom dead center), lever link 61
The free end side of is in the state of being pulled up the most.

Incidentally, FIGS. 3 and 4 illustrate the trajectory of the wheat stepping mechanism 7.

Therefore, the free end of the lever link 61 is at the bottom when the crank arm 50 is at the top dead center, and is at the top when the crank arm 50 is at the bottom dead center. , moves up and down between this top and bottom.

Here, since the stepping mechanism 7 is provided at the free end of the lever link 61, when the crank arm 50 rotates from the bottom dead center to the top dead center, the stepping mechanism 7 descends, and the crank arm 50 moves to the top dead center. When the height is reached, the wheat stepping mechanism 7 becomes the lowest position and performs wheat stepping.
Further, when the crank arm 50 rotates beyond the top dead center toward the bottom dead center, the wheat stepping mechanism 7 rises, and when the crank arm 50 reaches the bottom dead center, the wheat stepping mechanism 7 is at the uppermost position.

In this case, as shown in FIG. 6, by adjusting the reduction ratio of the large pulley 40 and the small pulley 52 so that the barley tread plate 91 is slightly applied to the part where the barley treading is performed, the barley treading can be done evenly.

The wheat stepping mechanism 7 is composed of a base 8 and four wheat stepping bodies 9. The base 8 is pivotally supported on the free end of the lever link 61, and the four wheat stepping bodies 9 are respectively attached to the lower part of the base 8. It is provided so that it can be raised and lowered independently, and each barley tread body 9 is always urged downward by a spring 88. Therefore, as shown in FIG. 7, even if there is a convex part such as a stone on the soil surface, each wheat stepping body 9 has an independent height corresponding to the height of the soil surface on which the wheat stepping body 9 touches the ground. Since the barley treading is carried out in a variable manner, the portions where the barley treading is insufficient are extremely reduced, and the barley treading effect can be made uniform.

In this way, in the wheat stepping device A of the first embodiment, the rotational force of the wheels becomes the driving force, and the wheat stepping mechanism can be moved up and down via the transmission means, the crank mechanism, and the conversion mechanism. The vertical movement allows effective wheat treading work.

In this case, the wheat stepping mechanism consists of a base and four wheat stepping bodies, the base is pivotally supported on the output side of the conversion mechanism, and the plurality of wheat stepping bodies are placed under the base so that they can be raised and lowered independently. Moreover, each barley tread is configured to be constantly biased downward by a spring, so even if there is a convex part such as a stone on the soil surface, each barley tread will maintain its position on the soil surface on which it touches the ground. Since the wheat stomping is carried out with the heights independently changing depending on the height, the portions where the wheat stomping is insufficient are extremely reduced, and the wheat stomping effect can be made uniform.

In addition, since the input side of the conversion mechanism that moves the barley stepping mechanism up and down is rotational movement by a crank mechanism,
The barley stepping will be performed at the top dead center of the crank arm, and since this top dead center is instantaneous, the ground contact of the barley stepping mechanism is also instantaneous, so as the self-propelled vehicle moves forward, the barley stepping mechanism will It does not get dragged while remaining on the ground, and it is possible to tread the wheat continuously without damaging it.

Moreover, even if the barley tread 91 is about to be dragged, the lever link 61 and the base 8 are supported by the support shaft 82, and the column 90 of the barley tread body 9 and the barley tread 91 are supported.
Since both are supported by the support shaft 98, the support shaft 82,
98 has a relief effect, and the barley tread plate 91 can step on barley without being dragged.

Next, a second embodiment shown in FIGS. 8 and 9 will be described.

The wheat treading device B of this second embodiment is an example in which it is connected to a tiller Pb as a self-propelled vehicle P, and differs from the first embodiment in the following points.

The machine frame 1 of this embodiment includes a vertical frame 10 and a horizontal frame 11.
The seat S is provided at the front of the horizontal frame 11, and the vertical frame 10 is fixed to the horizontal frame 11 at right angles and is provided at the rear of the seat S.

The connecting means 2 of this embodiment includes a cylindrical connecting member 20
is provided vertically on the front part of the horizontal frame 11, and is connected by inserting a pin c in alignment with the connection hole b of the tiller Pb.

The small pulley 41 of this embodiment is provided so that it can be fixed to the crankshaft 51 with a fixing screw 44, and by loosening the fixing screw 44, the small pulley 41 and the crankshaft 51 can be attached to each other.
When it is 0, it is free, and the rotational force of the wheel 3 is not transmitted.

The tiller Pb of this embodiment is not equipped with a device for lifting the barley treading device B upward when it is not in use, so the barley treading mechanism 7 is pulled up using a hook d, and the wheels 3 are grounded. Since it is necessary to turn a curve without stopping, the left and right axles are attached so that they can rotate independently, but the large pulley 40 is connected to at least one axle 30 so as to be interlocked.

Since the other configurations are the same as those in the first embodiment, the same reference numerals are attached to the drawings and explanations thereof will be omitted.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, in the embodiment, a pulley and a belt are used as the transmission means, but gears may also be used.

Further, although a case has been shown in which a connecting link and a lever link are used as the conversion mechanism, the present invention is not limited to this, and any other mechanism may be used as long as it converts the rotational movement of the crank mechanism into vertical movement.

(Effect of the invention) Therefore, in the wheat treading device of the present invention,
With the above-mentioned configuration, the rotational force of the wheels becomes the driving force, and the wheat stepping mechanism can be moved up and down via the transmission means, crank mechanism, and conversion mechanism, and this vertical movement allows for effective wheat stepping. able to perform work.

In this case, the wheat stepping mechanism consists of a base and a plurality of wheat stepping bodies, the base is pivotally supported on the output side of the conversion mechanism, and the plurality of wheat stepping bodies are provided at the bottom of the base so that they can be raised and lowered independently. Furthermore, each barley tread is configured to be constantly biased downward by a spring, so even if there is a convex part such as a stone on the soil surface, each barley tread will maintain the height of the soil surface on which it touches the ground. Since the wheat stomping is carried out by changing the height independently according to the height of the wheat, the portions where the wheat stomping is insufficient are extremely reduced, and the wheat stomping effect can be made uniform.

In addition, since the input side of the conversion mechanism that moves the barley stepping mechanism up and down is rotational movement by a crank mechanism,
Stepping will be performed at the top dead center or bottom dead center of the crank arm, and since these top dead centers and bottom dead centers are instantaneous, the grounding of the stepping mechanism is also instantaneous, so the self-propelled vehicle As the barley stepping mechanism remains in contact with the ground, it is not dragged, and barley stepping can be carried out continuously without cutting or damaging the wheat.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of the wheat stepping device of the present invention, FIG. 2 is a side view showing the state connected to a tractor, FIGS. 3 and 4 are explanatory diagrams showing the trajectory of the wheat stepping mechanism, Fig. 5 is an explanatory diagram showing the installation state of the barley treading body, Fig. 6 is an explanatory diagram showing the barley treading interval,
Fig. 7 is an explanatory diagram showing the state of barley treading on the convex portion, Fig. 8 is a side view showing the state in which the barley treading device of the second embodiment is connected to the tiller, and Fig. 9 is an explanatory diagram showing the state of the barley treading device of the second embodiment. It is an explanatory view showing a small pulley part. A, B: Wheat stepping device, P: Self-propelled vehicle, Pa: Tractor (self-propelled vehicle), Pb: Tiller (self-propelled vehicle), 1: Machine frame, 2: Connection means, 3: Wheels, 4: Transmission means ,
5: Crank mechanism, 6: Conversion mechanism, 7: Barley stepping mechanism, 8: Base, 9: Barley stepping body, 88: Spring.

Claims (1)

[Scope of Claims] 1. A machine frame equipped with a connecting means to be connected to a self-propelled vehicle such as a tractor, a wheel provided on the machine frame that rotates due to ground friction, and a rotating force of the wheel transmitted through a transmission means. The barley pedal mechanism includes a crank mechanism to which the transmission is transmitted, a conversion mechanism that converts rotational motion of the crank mechanism into vertical motion on the input side and vertical motion on the output side, and a barley stepping mechanism that moves vertically via the conversion mechanism. Consisting of a base and a plurality of barley stepping bodies, the base is pivotally supported on the output side of the conversion mechanism, and the plurality of barley stepping bodies are provided at the bottom of the base so that they can be raised and lowered independently, and each This barley treading device is characterized in that the barley treading body is constantly biased downward by a spring.