JPH0353601Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ridge making machine for forming ridges for cropping in fields, etc., and relates to a structure in which the plowing depth can be freely adjusted.

Furrowing work using a ridge-making machine in the field involves an internal filling method in which the ridge-making machine is run in the center of the ridge to be formed and soil is taken into the center of the ridge-making machine.
There is an external heaping method in which a ridge-making machine runs between two ridges and the cultivated soil within the range of the ridge-making machine is piled up on the outside to create a ridge. is taken.

By the way, the tilling blade that is driven in both methods is
First, the soil is dug up, and then a pair of soil plates located behind it are used to compact the tilled soil. Especially in the case of the external heaping method, all of the excavated soil is transferred to the soil plates behind the tiller blades. Since the work was carried out in such a way that the tilled soil was distributed and pushed to the left and right by the remaining tillage processing board, the resistance of the tilled soil against the soil pushing boards etc. was extremely large.

By the way, when this resistance is small, the running speed of the ridge making machine becomes relatively high, and accordingly, the digging by the tilling blade becomes shallower, and the tilling depth can also be set to be shallower. On the other hand, when this resistance increases, the running speed of the furrowing machine slows down, so the amount of tilled soil dug up by the tilling blade also increases, resulting in the phenomenon that the tilling depth becomes deeper. The resistance of the dug up soil against the soil pressing plate is small when the tilling blade and the soil pressing plate are close to each other, and the resistance increases as the tilling blade and the soil pressing plate are moved apart.

Focusing on this phenomenon, the present invention makes it possible to adjust the installation distance between the tilling blade and the soil pushing plate, etc., thereby adjusting the resistance applied to the soil pushing plate, etc., and thereby increasing the running speed of the ridge making machine. In addition to making it possible to adjust the related tillage depth by changing the height of the ridge, it is also designed to sufficiently compress the slope of the ridge and form ridges with good soil compaction even if the height of the ridge changes. be. That is,
Its specific configuration includes a machine body, a tilling blade provided at the bottom of the machine body and rotatably driven using a prime mover as a drive source, and a residual tillage processing plate provided at the center of the rear of the tillage blade.
Furthermore, it is equipped with a pair of left and right earth pressing plates slightly behind it, and the left and right earth pressing plates are set to open upwards, and are connected to operating rods that slide both earth pressing plates against the ridge slope filled with cultivated soil. The remaining tillage processing board and the soil pushing board are attached at positions that can be moved toward and away from the tilling blade.

The present invention will be explained in detail below based on the illustrated embodiments. First of all, Figure 1 shows the overall structure of the ridge forming machine to which the present invention is applied.As an example, the prime mover 1 is installed in the upper front of the machine body F as a power source, and the machine is located almost below the center of the machine F. ni cultivation blade 2
It is intended to provide Of course, this tilling blade 2 receives rotation from the prime mover 1 via a suitable speed reducer, and serves both the tilling action and the traveling driving action of the machine, but depending on the nature of the field to be tilled and other purposes. Therefore, the tilling blade must be replaced or a running wheel may be provided separately.

Incidentally, reference numeral 3 is an output drive shaft drawn out from the middle of the drive system of the prime mover, and according to the conventional method, this shaft is used to perform the sliding operation of the earth pushing plate, which will be described later. An operating handle 4 is extended and formed at the rear of the upper part of the fuselage F, and necessary operating devices such as a throttle lever and a clutch lever are provided here as usual. However, various devices for shaping the cultivated soil are connected to the rear of the lever, and has the following configuration. That is, reference numeral 5 denotes a bearing-shaped attachment, which is connected to a joint portion of the fuselage F by a pin or the like in accordance with a conventional method. A T-shaped machine frame 6 is attached to this attachment 5 so that the set angle can be adjusted freely. This angle adjustment device 7 has the following configuration. That is, for example, a support bracket 8' with a female thread 8 is extended diagonally rearward from the attachment 5, and an adjustment bolt 9 with a handle is screwed into this support bracket 8'. The lower end of the adjustment bolt 9 is rotatably engaged with a bolt receiver 10 fixed to the machine frame 6 side. Incidentally, the reference numeral 11 indicates the attachment and the machine frame 6.
This is a locking bolt that fixes the angle after it is set at a certain angle.

Next, the members supported by this machine frame 6 will be explained. Attachment 5 of machine frame 6
The horizontal machine frame 6 is rotatably supported directly against the horizontal machine frame 6.
A pair of left and right bearings 12 whose mounting positions are adjustable are attached to a, and these support an idle shaft 13 for driving the earth pushing plate, which will be described later.

On the other hand, a vertical machine frame 6b extending downward from the center of the horizontal machine frame 6a supports a residual tillage processing plate 14 having a pointed front end. Below that, a shorter auxiliary machine frame 6c extends horizontally from the vertical machine frame 6b, and the lower end of the earth pushing plate 15 is supported thereon. Specifically, a bearing attachment 16 that is externally fitted onto the auxiliary machine frame 6c is formed to support the lower end of the front surface portion 15a of the earth pressing plate 15. The pair of left and right earth pressing plates 15 as a whole have an upwardly opening shape. Further, an operating rod 17 is rotatably connected to the inner upper side of the side surface 15b of each earth pressing plate 15, and the operating rod 17 has, for example, a middle portion bent in the middle by a rotation fulcrum 18. At its upper end, it is pin-connected to a swing arm 19 attached to the idle shaft 13.
Incidentally, this idle shaft 13 has power transmitted to the drive shaft 3 driven by the above-mentioned prime mover via a crank attachment 20, connecting rod 21, and drive arm 22, and performs a reciprocating rotational movement at a constant angle. is given.

Furthermore, the embodiment of the present invention is provided with an operation stabilizing device, which is attached to the lower rear end of the vertical machine frame 6b mentioned above. That is, a holding part 6d made of a square pipe having a lock bolt at the lower end is attached to the back side of the vertical machine frame 6b, and the support bracket 25 of the push-up plate 24 is attached to this holding part 6d. That is, this support bracket 25 is formed by forming a shaft support 25a that extends horizontally from the lower end of a vertical member that fits into the holding part 6d, and also forms a spring receiving part 25b that projects almost horizontally forward. . The base end of the push-up plate 24 is rotatably supported by a pin on the shaft support 25a, and the spring receiving portion 25
b and the free end side of the push-up plate are connected by a vertical guide pin 26, and a spring 2 is connected between them.
7 is reduced. Note that the reference numeral 28 is a boot of the spring 27.

The present invention has the configuration as described above, and the ridge forming operation is performed as follows. That is, the adjustment bolt 9 screwed into the support bracket 8' of the attachment 5 is appropriately rotated depending on the height of the ridge A to be ridged. However, when the adjustment bolt 9 of the lever is screwed in, the bolt receiving part 10 is pushed downward, and the machine frame 6 integrated with this is rotated to connect the remaining tillage treatment plate 14 attached to the machine frame 6 and the soil shovel. Together with the plate 15 and the push-up plate 24, these are set to be closer to the tilling blade 2 side. As shown in FIG. 6A, when the remaining tillage processing plate 14 and soil pushing plate 15 are brought close to the tilling blade 2, the space between them becomes smaller and the puddle of soil tilled by the tilling blade 2 is removed. few. Therefore, since the resistance of the tilled soil acting on the residual tillage treatment plate 14 and the soil pushing plate 15 is small, the ridge making machine itself runs at a relatively high speed.

That is, in this operation, the prime mover 1 is driven in accordance with the conventional method, its rotation is transmitted to the tilling blade, and the ridge making machine of the present invention is run between the ridges. At such times, the tilling blade moves forward while digging up the tilled soil, but because the resistance of the soil pushing plate behind it is small, it moves forward at a relatively fast speed, so that the work can proceed at a shallow tilling depth. .

The power is then transmitted to the earth pressing plate attached at the rear to form the ridges in the following manner. That is, the crank attachment 20 attached to the drive shaft 3 gives a reciprocating motion to the connecting rod 21, which causes the drive arm 22 at its end to swing, thereby transmitting a reciprocating rotational motion at a fixed angle to the idle shaft 13. It is. This reciprocating rotational movement is caused by the swinging arm 1 attached to the idler shaft 13.
9, and a reciprocating motion is generated in the operating rod. In response to this reciprocating movement of the operating rod, the soil pushing plate 15 is centered around the fulcrum in the bearing attachment 16 below it, while also sliding with the upper free end, so that the tilled soil is piled up on both the left and right sides. . Incidentally, at this time, the remaining tillage portion in the central portion where the tilling blade 2 does not act is loosened by the remaining tillage treatment plate 14. Furthermore, in the case of shallow ridge work, since the height of the ridge is low, the soil on the slope of the ridge can be compacted without having to perform many compaction operations using the soil pressing plate 15.

On the other hand, when setting the tilling depth to a large value for this type of work in the case of shallow furrows, loosen the aforementioned adjustment bolt 9 and tighten the machine frame 6 as shown in Figure 6B.
The lower part of the machine frame 6 is moved to the rear of the tilling blade 2 by pulling up the bolt receiving part 10 attached to the holder, thereby separating the soil pushing plate 15 and the like backward, and separating it from the tilling blade 2. It enlarges the space between them. In this way, the tilling blade 2 and the soil pressing plate 15
A large amount of tilled soil dug up by the tilling blade 2 temporarily accumulates between the tilling blade 2 and the tilling blade 2, and the resistance to advancement becomes large and the running speed of the furrowing machine becomes slow. This allows the tillage depth to be increased over time.

Moreover, since the progress is slow, the earth pushing plate 15
This increases the number of times the compression operation is performed, and even though the height of the ridge is high, the slope of the ridge can be sufficiently compressed to improve the tightness of the ridge.

As detailed above, the present invention allows the desired tilling depth to be obtained simply by adjusting the mounting position of the members without increasing the rotation speed of the tilling blade, or in other words, without requiring any special power. , improve soil compaction on ridge slopes regardless of ridge height,
It is possible to form strong ridges.

In addition, the present invention only needs to be configured so that the attachment positions of the residual tillage processing board and the soil pushing board installed behind the tilling blade can be moved toward and away from the tilling blade, and there are various embodiments thereof. do. For example, although the earth pressing plate of this embodiment is a lower supporting type earth pressing plate, it is also possible to use an upper supporting type earth pressing plate like a conventional type.

In addition, the adjustment mechanism itself is not limited to approaching and separating by rotating the upper part as a fulcrum as in this embodiment.
Of course, there is no problem even if the machine frame is used as a guide to move the machine in parallel.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from the rear showing the overall structure of the ridge making machine according to the present invention, Fig. 2 is a side view of the same, Fig. 3 is a back view showing the device for making ridges, and Fig. 4 is a side view of the same. Figure 5 is a perspective view of the same as above, and Figure 6 is a diagram schematically showing the setting state of the tilling blade and soil pressing board etc. when performing ridge-making work. A side view showing a state in which they are brought closer together, and a side view in FIG. 1... Prime mover, 2... Cultivating blade, 6... Machine frame, 9
...Adjustment bolt, 15... Earth press plate, F... Airframe.

Claims (1)

[Scope of utility model registration request] It is equipped with a machine body, a tillage blade installed at the bottom of the machine body and driven to rotate using the prime mover as a drive source, a residual tillage treatment plate installed at the center behind the machine body, and a pair of left and right soil pushing plates located slightly behind the machine body. The earth pressing plate is set to open upwardly, and an operating rod is connected to slide both earth pressing plates against the ridge slope on which tilled soil is piled up.
A ridge making machine with adjustable tillage depth, characterized in that the attachment position of the tiller blade can be freely approached and separated from the tiller blade.