JPH0681570A - Excavator - Google Patents

Abstract

PURPOSE:To prevent an excavator from deflecting in the rotating direction of a drill and to facilitate the withdrawal of the drill. CONSTITUTION:A sharp tool 76 adapted to be stuck into the ground surface so as to be fixed is incorporated in a body holding means 14 for holding a body 12 so as that a body 12 is slidable in an excavating direction in order to prevent an excavator from moving in a rotating direction of a drill 16. Further, a rotating direction change-over means 20 for reversing the rotation of the drill, allows the drill 16 to come off from the ground surface when the drill 16 is reversed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digging machine for digging a hole in the ground or the like by driving a driving device to rotate a drill.

[0002]

2. Description of the Related Art In the work of erecting utility poles and trees on the ground, it is necessary to dig a hole in the ground. Traditionally,
This digging work was done manually using a scoop. However, this digging work was a heavy labor and a difficult work. In addition, since this digging work is performed by digging up the ground with a scoop or the like, it is necessary to dig a hole wider than a necessary hole, which is a waste of labor.

Therefore, a digging machine has been devised which is capable of digging a hole in the ground or the like by driving a driving device to rotate the drill in a certain direction. As an example of this digging machine, the digging machine 1 is shown in FIG. The digging machine 1 holds the grips 2 and 3 and stands vertically on the ground, and drives an engine (driving device) 4 to rotate a drill 5 in a certain direction to dig a hole in the ground or the like. Is configured to be able to. According to such a hole digging machine 1, it is possible to dig a hole in the ground by driving the engine 4 and biting the drill 5 into the ground. Further, since the drill 5 is rotated to dig a hole, it is possible to dig a long hole in the direction in which the drill 5 bites, and to dig a hole of the minimum necessary size.

[0004]

However, this hole excavator 1
Since the drill 5 is rotated to dig a hole, a large resistance force is applied to the drill 5 from the ground, so that the digging machine 1 may be shaken in the rotation direction of the drill 5. For this reason, the operator holding the grips 2 and 3 may lose his posture in the turning direction of the drill 5, which is very dangerous. Further, since the drill 5 bites into the ground and the weight of the hole digging machine 1, it is difficult to pull up the grips 2 and 3 and pull out the drill 5. Therefore, the digging work by the digging machine 1 could not be easily performed.

Therefore, the inventor of the present invention has conducted intensive studies to provide a digging machine capable of digging holes safely and easily, and as a result, the present invention has been achieved.

[0006]

SUMMARY OF THE INVENTION A gist of a digging machine according to the present invention is to dig a hole in the ground by driving a driving device to rotate a drill. And a body holding means for pushing a hole excavator body equipped with a drill to the ground and holding it so as to be slidable in the direction of the hole, and including a body holding means having a fixing portion fixed to the ground. There is something.

Further, in the hole excavator according to the present invention, the fixing portion of the main body holding means is a sharp tool which is pierced into the ground.

Further, the gist of the digging machine according to the present invention is that in a digging machine for digging a hole in the ground by driving a driving device to rotate the drill, the direction of rotation of the drill is changed. It is provided with a turning direction converting means for converting to a reverse direction.

Further, the gist of the digging machine of the present invention is that in a digging machine for digging a hole in the ground by driving a driving device to rotate the drill, a hole provided with the driving device and the drill. Main body holding means for holding the excavator main body against the ground so as to be slidable in the direction of the hole, and a main body holding means having a fixing portion fixed to the ground, and a rotating direction of the drill. And a rotation direction conversion means for converting the rotation direction into a reverse direction.

[0010]

In the digging machine according to the present invention, first, the fixing portion of the main body holding means for holding the digging machine main body is fixed to the ground. The hole excavator with the fixing part of the main body holding means fixed to the ground,
The driving device is driven to rotate the drill. By rotating the drill, the body of the digging machine slides in the digging direction, scrapes the soil on the ground, and digs a hole in the ground. Here, since a large resistance force is applied to the drill from the ground, a force is applied to the drilling machine body in the direction in which the drill rotates. However, even though the force is applied in the direction in which the body of the digging machine is rotated, the fixing portion of the body holding means is fixed to the ground, so that the digging machine is shaken in the rotating direction. There is no.

Further, in the hole excavator of the present invention in which the fixing portion of the main body holding means is a sharp tool which is pierced into the ground, the sharp tool is pierced into the ground and the main body holding means is fixed to the ground. Since the sharp tool is pierced into the ground and the main body holding means is fixed to the ground, even if a large resistance force is applied to the drill from the ground, the digging machine does not swing in the rotation direction of the drill.

Next, the hole excavator of the present invention equipped with the turning direction changing means for changing the turning direction of the drill to the opposite direction, the turning direction in the state where the drill is dipped into the ground to a predetermined depth. The conversion means causes the drill to rotate in the opposite direction. By rotating the drill in the opposite direction, the drill is returned in the direction opposite to the drilling direction. By returning the drill in the direction opposite to the digging direction, the drill is easily pulled out of the ground without the force of the operator.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the hole excavator according to the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 10 is a digging machine according to the present invention. The digging machine 10 comprises a digging machine body 12 and a body holding means 14 that holds the body 12 on the ground. The main body 12 is attached to the main body holding means 14 so as to be slidable with respect to the main body holding means 14.

The body 12 pushes the drill 16 to the ground,
By driving the engine (driving device) 18 to rotate the drill 16 in a certain direction, it is possible to dig a hole in the ground. The rotation of the main shaft of the engine 18 is decelerated by a speed reducer built in the engine 18. Also, drill 16
Is configured to be rotated via the rotation direction conversion means 20, and the rotation direction of the drill 16 can be reversed.

Here, as shown in FIG. 2, FIG. 3 or FIG. 4, the rotation direction changing means 20 is rotated around the input main shaft 34 and the output main shaft 40. Gears 24 and 26 that are rotated, gears 28 and 30 that are rotated around the sub spindle 52, a gear 32 that is meshed with the gears 26 and 30, and a sliding lever 33 that slides the gears 24 and 30 up and down. And is configured.

The gear 22 is fixed to the input main shaft 34 so as to be rotated together with the input main shaft 34 which is rotated via a reduction gear. Further, at one end of the gear 22, there is provided a fitting portion 36 whose inner surface is toothed and into which the gear 24 is fitted.

The gear 24 has a tooth portion 38 fitted in the fitting portion 36 of the gear 22 and the spline 4 of the output spindle 40.
2 is provided with a hollow portion 44 which is slidable along with 2, and a sliding concave portion 50 which is slidably engaged with a sliding member 48 of a vertically moving jig 46 which is vertically moved.
That is, when it is lifted by the vertical movement jig 46, the tooth portion 38 is fitted to the fitting portion 36 of the gear 22 to transmit the rotation of the gear 22 to the output main shaft 40, and when it is lifted down. It is configured so as not to mesh with any gear.

The gear 26 is fixed to the output main shaft 40 so as to be rotated together with the output main shaft 40. The gears 28 and 30 are fixed to the sub-main shaft 52 so as to be rotated together with the sub-main shaft 52. The gear 32 is fixed to a vertical movement jig 54 that is moved up and down by a sliding lever 33, and when it is held down by the vertical movement jig 54, it meshes with the gears 30 and 26 to rotate the gear 30. Is transmitted to the gear 26 so that it does not mesh with any gear when it is lifted.

Next, the sliding lever 33 for moving the vertical moving jigs 46 and 54 up and down moves the lever 56 by sliding the sliding lever 33 up and down as shown in FIG. The vertical movement rod 58, to which the vertical movement jigs 46 and 54 are fixed, is configured to move vertically while sliding with respect to the sliding shaft 60. That is, by raising the sliding lever 33, the vertical movement jig 4
6 and 54 are lowered so that gear 32 meshes with gears 30 and 26 while gear 24 does not mesh with any gear and lowering slide lever 33 causes vertical movement jig 46
And 54 are raised so that the gear 32 does not mesh with any gear while the gear 24 is fitted into the fitting portion 36 of the gear 22.

Further, as shown in FIG. 1, the main body holding means 14 includes two holding members 62 for holding the main body 12, two poles 64 on which the holding members 62 are slid, and the two holding members 62. Frame 66 fixed to the upper end of pole 64
And a frame 68 fixed to the lower ends of the two poles 58. The holding member 62 is a pole 64
Is composed of a sliding member 70 slidably inserted therein and a handle 72 fixed to the sliding member 70. Further, the handle 72 is provided with a brake 74 for fixing the holding member 62 to the pole 64, and by holding the brake 74, the fixing is released and the holding member 62 can be slid with respect to the pole 64. Is configured. The pole 64 has a sharp tool (fixing part) 76 at one end.
Is provided, and the main body holding means 14 can be fixed to the ground by piercing the ground. The frame 66 is fixed to the upper end of the pole 64 so as to surround the main body 12.
It is configured to serve as an upper end stopper of the holding member 62 that can be slid with respect to. The frame 66 is fixed to the lower end of the pole 64 so as to surround the main body 12, and is configured to stabilize the digging machine 10 on the ground by stepping on it with a foot when performing digging work. .

In the hole excavator 10 having such a structure, the handle 72 is first gripped and set on the ground, and the sharpening tool 7 is used.
6 is stabbed on the ground and the frame 68 is stepped on with a foot. The sharpening tool 76 is pierced on the ground and the frame 68 is stepped on by the foot, so that the digging machine 10 is stably erected on the ground. In the hole excavator 10 in which the sharp tool 76 is pierced on the ground and is erected on the ground, the engine 18 is operated with the sliding lever 33 of the turning direction converting means 20 being lowered. When the engine 18 is operated, the input main shaft 34 of the rotation direction changing means 20 is rotated via the speed reducer built in the engine 18.

Here, since the sliding lever 33 is lowered, the lever 56 is actuated and the vertical moving rod 58 is pushed up. Since the vertical movement rod 58 is pushed up, the vertical movement jig 46 is pushed up and the gear 24 is pushed up. By pushing up the gear 24, the tooth portion 38 of the gear 24 is fitted into the fitting portion 36 of the gear 22. Since the tooth portion 38 of the gear 24 is fitted to the fitting portion 36 of the gear 22, the input main shaft 34
The gear 24 is rotated together with the gear 22. When the gear 24 is rotated together with the input main shaft 34, the output main shaft 40 is rotated in the same direction as the input main shaft 34. The gear 24 is the sliding member 4 of the vertical movement jig 46.
It is rotated while being slid with respect to 8.

By rotating the output main shaft 40 in this manner, the drill 16 fixed to the output main shaft 40 is rotated, and the drill 16 sneaks into the ground while scraping the soil with the tip claw 61 thereof. Go out. In addition,
Brake 7 fixing holding member 62 to pole 64
By grasping 4, the fixing is released and the holding member 62 becomes slidable, and as the drill 16 descends into the ground, the main body 12 slides down along the pole 64 and descends to the ground. The hole is dug. Here, since a large resistance force is applied from the ground to the drill 16, the force is applied in the direction in which the main body 12 is rotated. But,
Since the pin 76 is pierced into the ground and the frame 68 is stepped on with the foot, the hole excavator 10 is stably erected on the ground even though the force is applied in the direction in which the main body 12 is rotated. The digging machine 10 does not swing in the rotating direction.

Next, the slide lever 33 of the turning direction converting means 20 is inserted with the drill 16 being submerged to a predetermined depth.
Are pushed up as shown in FIG. Sliding lever 3
When 0 is pushed up, the vertical movement jig 46 is pushed down, the gear 24 is pushed down, and it is pulled out from the fitting portion 36 of the gear 22. When the gear 24 is pulled out from the fitting portion 36, the gear 24 does not mesh with any gear.

On the other hand, when the vertical movement jig 54 is pushed down, the gear 32 is brought into a state of meshing with the gears 30 and 26. Since the gear 32 is brought into a state of meshing with the gears 30 and 26, the rotation of the input main shaft 34 is prevented.
Via 8, 30, 32, and 26, it is converted in the opposite direction, decelerated, and transmitted to the output spindle 40. The rotation of the input main shaft 34 is converted in the opposite direction and transmitted to the output main shaft 40, whereby the drill 16 fixed to the output main shaft 40 is rotated in the reverse direction. By rotating the drill 16 in the opposite direction, the drill 16 is pulled out of the ground without the force of the operator. Further, since the rotation of the input main shaft 34 is decelerated and transmitted to the output main shaft 40, the drill 16 is gradually withdrawn from the ground, so that the withdrawal work of the drill 16 is performed safely.

According to the hole excavator 10 as described above, the main body 12
Even when a large resistance force is applied to the drill 16 from the ground in the direction in which the tool is rotated, the sharp tool 76 is pierced into the ground and the frame 68 is stepped on by the foot to stably stand the hole excavator 10 on the ground. Therefore, the hole excavator 10 is not shaken in the rotation direction. Therefore, the handle 72
The worker holding the can keep the posture in the turning direction of the drill 16 and can safely carry out the drilling work.
Further, by piercing the ground with the sharp tool 76, it is possible to easily stabilize the hole excavator 10 and stand it on the ground.
Further, the main body 12 can be slid along the pole 64 in the direction of the digging to perform the digging work. For this reason, it is possible to easily carry out the digging work.

Further, by pushing up the sliding lever 33, the rotation of the output main shaft 40 can be converted in the opposite direction. Therefore, the drill 16 can be easily pulled out from the ground without relying on the force of the operator. Moreover, the drill 16 can be pulled out at a substantially constant speed by rotating the drill 16 in the opposite direction, and the work of pulling out the drill 16 can be performed safely. Further, the rotation of the input main shaft 34 can be decelerated and transmitted to the output main shaft 40.
Can be pulled out gradually from the ground, and the work of pulling out the drill 16 can be safely performed.

Although one embodiment of the present invention has been described above, the hole excavator according to the present invention can be implemented in other modes.

For example, a digging machine having the main body holding means 14 but not the turning direction converting means 20 may be used.
Even with such a digging machine, the digging work can be performed safely and easily as compared with the conventional digging machine. Further, it may be a hole excavator having the turning direction converting means 20 and not the main body holding means 14. Even with such a digging machine, the digging work can be performed safely and easily as compared with the conventional digging machine.

Further, as shown in FIG. 5, the main body holding means 14 of the digging machine 10 of the present invention is fixed to the ground by driving the pile (fixing portion) 75 through the frame 68 and driving it into the ground. You can In this way, by driving the pile 75 through the frame 68 and driving it into the ground,
The main body holding means 14 can be made more stable and fixed to the ground.

The digging machine according to the present invention may be a digging machine equipped with the main body holding means 80 shown in FIG. The main body holding means 80 is configured such that the tips of two poles 82 are branched into two, and a total of four sharp tools 76 are provided at each tip. Such a body holding means 8
According to 0, the four sharp tools 76 can be pierced into the ground to fix the main body holding means 80 to the ground. Therefore, the hole excavator can be more stably set up on the ground.

The digging machine according to the present invention may be a digging machine equipped with the main body holding means 84 shown in FIG. The main body holding means 84 is attached to the sliding member 86 via a spring 88 so that the main body 12 can be elastically slightly rotated in the rotating direction of the drill 16. The hole excavator equipped with the main body holding means 84 moves from the main body 12 to the handle 90 when the rotation of the drill 16 is started or when the rotation is accelerated.
The addition of the rotational direction to the spring is alleviated by the expansion and contraction of the spring 88. According to the hole excavator provided with the main body holding means 84, the handle 9 is provided by the spring 88.
Since the addition to 0 can be relaxed, the handle 90
It is possible to further enhance the safety of the operator who holds the hole and carries out the excavation work.

Further, the digging machine according to the present invention may be a digging machine having the main body holding means 85 shown in FIG. The main body holding means 85 includes two poles 8 at one end of the frame 66.
7 is attached and configured. The pole 87 is provided with a sharp tool (fixing tool) 89 at its tip, and its length can be adjusted by a screw 91. The main body holding means 85 can pierce the pin 76 into the ground and the sharp tool 89 into the ground to fix the main body holding means 85 diagonally to the ground. Therefore, the main body 12 can be slid obliquely to dig an oblique hole. Here, since the length of the pole 87 can be adjusted by the screw 91, the inclination angle of the main body holding means 85 can be arbitrarily adjusted. Further, the main body holding means 85
It is also possible to fix horizontally and perform horizontal hole excavation work.

Next, the digging machine according to the present invention may be a digging machine provided with the turning direction converting means 92 shown in FIG. The rotation direction converting means 92 includes a gear 94 that is rotated around the input main shaft 34, a gear 96 that is rotated around the output main shaft 40, and a gear 100 that is rotated around the sub-main shaft 98. 102 and 104, a gear 106 meshed with the gear 104, and a direction conversion lever 108 for sliding the gear 96 up and down.

Here, the gear 96 is a recess 1 in which the sliding member 110 of the direction changing lever 108 is slid when rotating.
12, a gear shaft 116 slidable in the hollow portion of the output main shaft 40, and the spline 1 provided on the gear shaft 116.
And 14 are provided. Further, the direction changing lever 108 is configured to be pushed down so that the spline 114 of the gear 96 is slid along the main shaft 40 to push up the gear 96 and can be meshed with the gear 102. Further, by pushing up, the spline 114 of the gear 96 is slid along the main shaft 40 to push down the gear 96, and the spline 114 can be engaged with the gear 106. That is, when the direction conversion lever 108 is pushed down, the rotation of the input main shaft 34 is transmitted to the output main shaft 40 via the gears 94, 100, 102 and 96, and when the direction conversion lever 108 is pushed up, the input main shaft 34 is rotated. Rotation of the gears 94, 100, 10
It is configured to be transmitted to the output main shaft 40 via 4, 106 and 96.

The rotation direction changing means 92 having such a structure pushes down the direction changing lever 108 to move the gear 9
6 is pushed up and meshes with the gear 102. When the gear 96 meshes with the gear 102, the gear 96 is
It is rotated in the same direction as the input main shaft 34 via 4, 100, 102 and 96. By rotating the gear 96 in the same direction as the input main shaft 34, the spline 114 is rotated.
The output main shaft 40 to which the rotation is transmitted is rotated in the same direction as the input main shaft 34.

On the other hand, by pushing up the direction changing lever 108, the gear 96 is pushed down and meshes with the gear 106. As the gear 96 meshes with the gear 106,
The gear 96 is gears 94, 100, 104, 106 and 96.
It is rotated in the direction opposite to the input main shaft 34 via. By rotating the gear 96 in the opposite direction to the input main shaft 34, the output main shaft 40 is rotated in the opposite direction to the input main shaft 34.

The hole excavator provided with the turning direction changing means 92 can also change the turning direction of the output main shaft 40 by the direction changing lever 108. Therefore, the rotation direction of the drill 16 can be reversed and the drill 16 can be easily pulled out of the ground.

Further, the digging machine according to the present invention may be a digging machine having the turning direction converting means 120 shown in FIG. The rotation direction converting means 120 includes a gear 122 that is rotated around the input main shaft 34, a gear 126 that is rotated around the output main shaft 40, and gears 122 and 126.
And a direction changing lever 124 for moving the gear 126 up and down. Here, the gear 126 is configured to be pushed down and mesh with the gear 128 by pushing up the direction changing lever 124. Further, the gear 126 is configured to be pushed up and fitted to the gear 122 when the direction changing lever 124 is pushed down.

The rotation direction changing means 120 pushes up the direction changing lever 124 so that the gear 126 is meshed with the gear 128 and the rotation of the input main shaft 34 is caused by the rotation of the gear 1.
Transmission in the opposite direction via 22, 128 and 126.
On the other hand, by pushing down the direction conversion lever 124,
The gear 126 is fitted to the gear 122, and the input spindle 3
The rotation of 4 is transmitted in the same direction via the gear 126.
The hole excavator provided with such a turning direction changing means 120 can also change the turning direction of the output main shaft 40 by the direction changing lever 124. Further, since the mechanism for relatively rotating the turning direction 120 has a relatively simple mechanism, it can be manufactured at a low cost.

Although various embodiments of the digging machine according to the present invention have been described above with reference to the drawings, the digging machine according to the present invention is not limited to the illustrated digging machine. For example, the drive device of the main body is not limited to the engine as described above, and may be an electric motor, a pulse motor, or the like. Further, the drive device may include a centrifugal clutch device that is configured such that the rotation of the main shaft is limited by the centrifugal force when the main shaft rotates at a certain number of rotations or more. Alternatively, the drive device may be provided with another clutch device configured to limit the rotation of the main shaft when the main shaft rotates at a certain number of rotations or more. Further, the shape of the drill is not limited to the shape of the above-mentioned drill, and any shape may be used as long as it can rotate to scrape the soil on the ground to dig a hole. Also,
As described above, the drill is not limited to a fixed length, but may be a drill whose length can be adjusted by adding a shaft.

The main body holding means is not limited to the above main body holding means. For example, it may be a main body holding means having wheels for movement. Further, the number of poles on which the holding member holding the body of the digging machine is slidable is not limited to two, and may be one or three or more. Further, the shape of the handle is not limited to the above-described shape of the handle, and the handle may be branched into several pieces so that a plurality of workers can hold it. further,
It may be a main body holding means having no handle and configured such that the drill bites into the ground due to the weight of the main body of the digging machine. Further, the sharp tool that pierces the ground is not limited to the sharp tool described above, and may be one that has spiral teeth and can be screwed into the ground.

Further, the turning direction converting means is not limited to the above turning direction converting means. For example, a reversible motor may be used as the drive device, and the rotation direction may be changed by a switch. In addition, the present invention can be carried out in a mode in which various improvements, modifications and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

[0045]

According to the digging machine of the present invention, since the fixing portion of the main body holding means for holding the digging machine main body is fixed to the ground, the drill is rotated from the ground to the drill in the direction of rotation. Even if a large resistance force is applied, the hole excavator does not swing in the rotating direction. For this reason, the operator holding the digging machine does not lose his posture in the turning direction of the drill, and the digging work can be performed safely. Further, it is possible to perform the digging work by sliding the digging machine body in the digging direction. For this reason, it is possible to easily carry out the digging work.

Further, according to the hole excavator of the present invention, in which the fixing portion of the main body holding means is a sharp tool piercing the ground,
Since the sharpening tool can be pierced into the ground to stably push the drilling machine to the ground, the drilling machine is not shaken in the rotating direction. Further, the main body holding means can be easily fixed to the ground by piercing the ground with a sharp tool.

Further, according to the hole excavator of the present invention, which is equipped with the turning direction changing means for changing the turning direction of the drill to the opposite direction, the turning operation is performed while the drill is immersed in the ground to a predetermined depth. The direction changing means can rotate the drill in the opposite direction to return the drill in the direction opposite to the digging direction. Therefore, the drill can be easily pulled out from the ground without relying on the force of the operator. Further, since the drill can be rotated in the opposite direction to return the drill in the direction opposite to the digging direction, the drill can be gradually pulled out of the ground at a substantially constant speed. Therefore, the work of pulling out the drill can be performed safely.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a hole digging machine according to the present invention,
The figure (a) is a front view and the figure (b) is a side view.

FIG. 2 is a front sectional view showing a turning direction converting means of the hole excavator shown in FIG.

FIG. 3 is a plan sectional view showing a turning direction converting means of the hole excavator shown in FIG.

FIG. 4 is a partially crushed side view showing a turning direction converting means of the digging machine shown in FIG. 1.

FIG. 5 is a view showing another embodiment of the digging machine according to the present invention, and is a perspective view showing a main body holding means.

FIG. 6 is a view showing still another embodiment of the hole excavator according to the present invention, and is a perspective view showing a main body holding means.

FIG. 7 is a view showing still another embodiment of the hole excavator according to the present invention, and is a plan view showing a main body holding means.

FIG. 8 is a view showing still another embodiment of the digging machine according to the present invention, and is a side view showing a main body holding means.

FIG. 9 is a view showing still another embodiment of the hole excavator according to the present invention, and is a front sectional view showing a turning direction converting means.

FIG. 10 is a view showing still another embodiment of the hole excavator according to the present invention, and is a front sectional view showing a turning direction converting means.

FIG. 11 is a perspective view showing a conventional digging machine.

[Explanation of symbols]

 10: An excavator 12; An excavator main body 14, 80, 84, 85; Main body holding means 16; Drill 18; Engine (driving device) 20, 92, 120; Rotation direction conversion means 76, 89; Sharp tool ( Fixed part) 75; Pile (fixed part)

Claims (4)

[Claims] 1. A digging machine for digging a hole in the ground by driving a driving device to rotate a drill, wherein a digging machine main body equipped with the driving device and a drill is pierced into the ground, A hole excavator, which is a main body holding means for holding the main body so as to be slidable in the trench direction, the main body holding means having a fixing portion fixed to the ground. 2. The fixing part of the main body holding means is a sharp tool that is pierced into the ground.
Anabolic machine described in. 3. A digging machine for digging a hole in the ground by driving a driving device to rotate a drill, comprising rotation direction conversion means for converting the rotation direction of the drill to the opposite direction. Anabolic machine characterized by. 4. A digging machine for digging a hole in the ground by driving a driving device to rotate a drill, wherein a digging machine main body equipped with the driving device and a drill is pierced into the ground, Main body holding means for holding the body so as to be slidable in the digging direction, the main body holding means having a fixing portion fixed to the ground, and a rotation direction conversion means for converting the rotation direction of the drill to the opposite direction. An digging machine characterized by having.