JP2020176373A - Wire burying device - Google Patents

Abstract

To provide a smaller wire burying device.SOLUTION: A wire burying device 10 has a machine body 11, a driving source 12, a horizontal driving shaft 14 driven by the driving source 12, a pair of right and left disks 30 attached to the horizontal driving shaft 14, a wire reel 16, a wire guide 19 feeding a wire 17 to a groove 18, and a resistance member 40 arranged behind the wire guide 19, provided at the machine body 11 and generating a resistance force in contact with the ground surface. The disk 30 has a disk part 31 and a ring part 33 extending in the axial direction of the horizontal driving shaft 14 from a side face of the disk part 31 and abutting on the ground surface 32 to support the machine body 11.EFFECT: A conventional driving wheel is replaced with the ring part and the ring part is integrally formed with the disk part corresponding to a conventional disk cutter, to thereby omit the conventional driving wheel. As a result, the present invention provides the smaller wire burying device.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wire burying device for laying wires on turf or grassland.

Since mowing and mowing is hard work, mechanization is required. As part of this, a self-propelled mower has been proposed.
Some self-propelled mowers mow unmanned while autonomously traveling within a work area surrounded by looped wires (see, for example, Patent Document 1 (FIG. 12)).

That is, since the self-propelled mower according to Patent Document 1 autonomously changes its direction when it detects a wire, the self-propelled mower does not go out of the work area surrounded by the wire. Unmanned mowing of grass in the work area.

Generally, the wire is placed on the ground and fixed with pegs. However, there is a concern that small animals (rats, etc.) living in the grassland will bite them off.
As a countermeasure, it has been proposed to bury the wire in the ground, and a wire burying device for that purpose has been proposed (see, for example, Patent Document 2 (FIG. 1)).

The technique of Patent Document 2 will be described with reference to FIG.
As shown in FIG. 6, the conventional wire burying device 100 includes a drive wheel 102 under the machine body 101, an engine 103 for driving the drive wheel 102 on the machine body 101, and a disk cutter 104 behind the body 101. The wire reel 105, the wire guide pipe 106, and the suppression wheel body 107 are provided.

The drive wheels 102 move the aircraft 101 forward. A groove is dug with a disk cutter 104 that is rotated by the engine 103. Drop the wire 108 into the dug groove. The groove is filled by pushing the soil with the suppression wheel body 107.

Although the wire burying device 100 disclosed in Patent Document 2 is relatively small, further miniaturization is required in order to promote its widespread use.

JP-A-2018-164425 Japanese Patent No. 2672794

An object of the present invention is to provide a wire burying device that is smaller in size.

The invention according to claim 1 is a wire burying device for digging a groove in the ground while self-propelling, dropping a wire into the groove, and covering the wire with soil.
The aircraft, a drive source mounted on the aircraft, a horizontal drive shaft driven by the drive source, a pair of left and right disks attached to the horizontal drive shaft, and the aircraft arranged behind these disks. A wire reel provided in the machine, a wire guide arranged behind the disk and provided in the machine body to send the wire supplied from the wire reel to the groove, and a wire guide arranged behind the wire guide and provided in the machine body. A resistance member that comes into contact with the ground to generate a resistance force is provided.
The disk is composed of a disc portion and a ring portion that extends from the side surface of the disc portion in the axial direction of the horizontal drive shaft and hits the ground to support the airframe.
At least one of the pair of disks is provided with a sawtooth portion on the outer periphery of the disk portion.
The resistance member is composed of a support member that is lowered from the machine body and a leveling plate that is provided at the lower end of the support member and covers the wire with the soil.
The leveling plate is characterized in that it extends in the width direction of the airframe so as to extend to the left from the left disk and to the right from the right disk among the pair of disks.
It should be noted that self-driving refers to traveling by a drive source, and is not limited to autonomous driving in a narrow sense.

The invention according to claim 2 is the wire burying device according to claim 1.
Both of the pair of disks are characterized by having a sawtooth portion on the outer periphery of the disk portion.

In the invention according to claim 1, the conventional drive wheel is replaced with a ring portion, and the ring portion is integrally formed with a disk portion corresponding to a conventional disk cutter, thereby omitting the conventional drive wheel.
In addition, the conventional resistance rod is replaced with a resistance member mainly composed of a leveling plate in the present invention. In addition to the role of leveling the embankment, the leveling plate also plays a role of generating resistance. Since the leveling plate of the present invention extends to the left and right and has a sufficiently large contact area with the ground, a sufficient resistance force is generated.
As a result, the present invention provides a smaller wire burying device.

In the invention according to claim 2, both the left disk and the right disk are provided with sawtooth portions, so that the straightness during traveling can be improved.

It is a side view of the wire burying apparatus which concerns on this invention. It is the 2 arrow view of FIG. 1, and is the front view of the main part of the wire embedding device. It is a main part plan view of a wire burying device. It is a figure explaining the operation of the wire embedding device. It is a figure explaining the modification example of the right disk. It is a side view of the conventional wire embedding device.

Embodiments of the present invention will be described below with reference to the accompanying drawings. The front, back, left, and right clearly shown in the figure are defined based on the operator who operates the wire burying device 10.

As shown in FIG. 1, the wire burying device 10 includes a machine body 11, a drive source 12 mounted on the machine body 11, a transmission shaft 13 driven by the drive source 12 and extending downward from the drive source 12, and this transmission. A horizontal drive shaft 14 rotated by a shaft 13, a disk 30 attached to the horizontal drive shaft 14, a wire reel 16 arranged behind the disk 30 and provided on the machine body 11, and behind the disk 30. A wire guide 19 that is arranged and provided on the machine body 11 and sends the wire 17 supplied from the wire reel 16 while guiding it to the groove 18, and a wire guide 19 that is arranged behind the wire guide 19 and provided on the machine body 11 and comes into contact with the ground 32 to resist It includes a resistance member 40 that generates a force.

The resistance member 40 is a member that comes into contact with the ground 32 and generates a resistance force during traveling. Due to the resistance force, the disk 30 rotates in the forward direction while idling. By idling, a groove 18 having a predetermined depth can be formed.

The machine body 11 may be a cast body, a frame structure, or a combination of a cast body and a frame, and the structure is arbitrary.
The drive source 12 may be a gasoline engine, a diesel engine, an electric motor, or a hydraulic motor.

The transmission shaft 13 extends downward through the inside of the machine body 11 and includes a small-diameter bevel gear 21 at the lower end.
The horizontal drive shaft 14 extending in the front-back direction of the drawing includes a large-diameter bevel gear 22, and the large-diameter bevel gear 22 is rotated by a small-diameter gear 21.
The transmission shaft 13, the small-diameter bevel gear 21, and the large-diameter bevel gear 22 may be changed to an upper sprocket, a chain, and a lower sprocket.
That is, the configuration of the drive system between the drive source 12 and the disk 30 is arbitrary, and in short, the structure may be such that the disk 30 can rotate with the drive source 12.

The wire 17 is, for example, a coated electric wire obtained by coating an aluminum stranded wire with a resin.
The wire guide 19 is, for example, a steel pipe bent into a J shape.
The resistance member 40 includes a support member 41 that is lowered from the machine body 11, and a leveling plate 42 that is provided at the lower end of the support member 41 and covers the wire 17 with soil (fill 43).
Preferably, an operation handle 23 extending diagonally upward to the rear is provided on the machine body 11, and the wire reel 16 is attached to the operation handle 23.

As shown in FIG. 2, a pair of left and right disks 30 are attached to the horizontal drive shaft 14.
The disk 30 includes a disc portion 31, a ring portion 33 extending from the side surface of the disc portion 31 in the axial direction of the horizontal drive shaft 14 in the axial direction and hitting the ground 32 to support the machine body 11, and a boss portion 34 provided in the center of the disc portion 31. And a bolt 35 screwed into the boss portion 34. By screwing in the bolt 35, the disk 30 is fixed to the horizontal drive shaft 14.

In this embodiment, the ring portion 33 is extended outward, but the ring portion 33 may be extended inward. Alternatively, the ring portion 33 may extend inward and outward.

Further, in this embodiment, the pair of discs 30 both have a sawtooth portion 36 on the outer periphery of the disc portion 31. The sawtooth portion 36 has a role of biting into the ground 32 to advance the machine body 11 and a role of cutting the vines crawling on the ground 32.
The sawtooth portion 36 is indispensable for the left disk 30L (L is a subscript indicating the left; the same applies hereinafter). On the other hand, the right disk 30R (R is a subscript indicating the right; the same applies hereinafter) does not have to be provided with the sawtooth portion 36.

As shown in FIG. 3, the wire guide 19 is arranged behind the disc portion 31 of the left disk 30L. In this case, the sawtooth portion 36 is indispensable for the left disk 30L. On the other hand, the right disk 30R may or may not be provided with the sawtooth portion 36.
However, it is recommended that the sawtooth portions 36 be provided on both of the pair of disks 30. This is because if the sawtooth portions 36 are provided on both of the pair of disks 30, the left and right conditions with respect to the ground 32 become the same, and the straightness of the machine body 11 can be maintained.

The leveling plate 42 extends in the width direction of the machine body 11 so as to extend a distance L1 to the left from the disc portion 31 of the left disk 30L and extend a distance L2 to the right from the disc portion 31 of the right disk 30R.
In the conventional resistance rod, the lower end is buried in the ground to generate resistance. On the other hand, in the present invention, as shown in FIG. 1, the support member 41 and the leveling plate 42 are on the ground, and resistance force is unlikely to be generated.
Therefore, as shown in FIG. 3, the leveling plate 42 is made horizontally long to increase the contact area with the ground 32 and generate resistance.

Further, when the pair of left and right wheels 30 are rotated in the normal direction to advance the aircraft 11, there may be a difference between the forward force of the left wheel 30L and the forward force of the right wheel 30R. At this time, since the leveling plate 42 is horizontally long, it plays a role of canceling the difference in forward force and contributes to straightness.
Therefore, the leveling plate 42 of the present invention is more advantageous in terms of straightness than the conventional resistance rod (one vertical rod).

The operation of the wire burying device 10 having the above configuration will be described with reference to FIG. Note that FIG. 4A corresponds to a sectional view taken along line 4a of FIG. 1, and similarly, FIG. 4B is line 4b of FIG. 1, FIG. 4C is line 4c of FIG. 1, and FIG. 4D is ) Corresponds to the cross-sectional view taken along the line 4d in FIG.

As shown in FIG. 4A, the ground 32 is not grooved.
As shown in FIG. 4B, a groove 18 is cut in the ground 32 by a disk (FIG. 3, reference numeral 30).
As shown in FIG. 4C, the wire guide 19 expands the left groove 18. That is, as shown in FIG. 3, since the outer diameter of the wire guide 19 is larger than the width of the disc portion 31, the groove width is widened. In FIG. 4C, the embankment 43 appears on the upper edge of the left groove 18 due to the expansion.
The embankment 43 is leveled by the leveling plate (FIG. 1, reference numeral 42), and the wire 17 is covered with soil as shown in FIG. 4 (d). The groove 18 on the right is not covered with soil, but since the width of the groove is small, there is no actual harm even if it is left unattended.

The wire burying device 10 of the present invention shown in FIG. 1 has the following advantages over the conventional wire burying device 100 shown in FIG.
Since the conventional wire burying device 100 has a drive wheel 102 and a disk cutter 104, it is larger than the present invention. On the other hand, the wire burying device 10 of the present invention is small because it does not have the drive wheels 102.

Of the discs 30 described with reference to FIG. 2, a modified example of the right disc 30R will be described with reference to FIG.
As shown in FIG. 5A, the right disk 30R does not have the sawtooth portion 36, and the outer diameter of the ring portion 33 and the outer diameter of the disc portion 31 may be the same.
As shown in FIG. 5B, the disc portion 31 may be fitted inside the ring portion 33 of the right disk 30R.

As shown in FIG. 5C, in the right disk 30R, the disc portion 31 is arranged substantially in the center of the width of the ring portion 33, and the disc portion 31 is fitted inside the ring portion 33. May be good.
Therefore, in FIG. 2, the sawtooth portion 36 is indispensable for the left disk 30L located in front of the wire guide (FIG. 3, reference numeral 19), but the right disk 30R is provided with the sawtooth portion 26. (FIG. 2), a form in which the saw tooth portion 26 is not provided (a form in which the saw tooth portion 26 is omitted from the disk 30R in FIG. 2), and a form in which the disk portion 31 does not touch the ground 32 (FIGS. 5 (b) and 5 (c)). Any form may be used.

Further, the disk 30R is not limited to FIGS. 2 and 5, and may be a driving wheel (rubber tire or the like) used in an agricultural work machine.

In the right disk 30R in which the sawtooth portion 26 is omitted, a tread may be provided on the outer peripheral surface of the ring portion 33 so as to bite into the ground 32. The dread may be an uneven surface provided on the outer peripheral surface of the ring portion 33, or a pin or plate standing on the outer peripheral surface.

Further, it is recommended that the wire burying device 10 of the present invention be used for burying a wire in a turf represented by a golf course, a turf or grassland in a garden, a grassland represented by a pasture, or the like. It may be used for other purposes.

The present invention is suitable for a wire burying device for laying wires on turf or grassland.

10 ... Wire embedding device, 11 ... Airframe, 12 ... Drive source, 14 ... Horizontal drive shaft, 16 ... Wire reel, 17 ... Wire, 18 ... Groove, 19 ... Wire guide, 30 ... Disk, 30L ... Left disk , 30R ... right disk, 31 ... disk part, 32 ... ground, 33 ... ring part, 36 ... sawtooth part, 40 ... resistance member, 41 ... support member, 42 ... leveling plate.

Claims (2)

A wire burying device that digs a groove in the ground while running on its own, drops a wire into the groove, and covers the wire with soil.
The aircraft, a drive source mounted on the aircraft, a horizontal drive shaft driven by the drive source, a pair of left and right disks attached to the horizontal drive shaft, and the aircraft arranged behind these disks. A wire reel provided in the machine, a wire guide arranged behind the disk and provided in the machine body to send the wire supplied from the wire reel to the groove, and a wire guide arranged behind the wire guide and provided in the machine body. A resistance member that comes into contact with the ground to generate a resistance force is provided.
The disk is composed of a disc portion and a ring portion that extends from the side surface of the disc portion in the axial direction of the horizontal drive shaft and hits the ground to support the airframe.
At least one of the pair of disks is provided with a sawtooth portion on the outer periphery of the disk portion.
The resistance member is composed of a support member that is lowered from the machine body and a leveling plate that is provided at the lower end of the support member and covers the wire with the soil.
The wire embedding is characterized in that the leveling plate extends in the width direction of the machine body so as to extend to the left from the left disk and to the right from the right disk among the pair of disks. apparatus. The wire burying device according to claim 1.
A wire embedding device, wherein both of the pair of disks are provided with a sawtooth portion on the outer periphery of the disk portion.

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