JP3146267B2 - Anahori machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling machine for drilling 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 telephone poles, trees, and the like on the ground, it is necessary to perform a digging work to dig a hole in the ground. Traditionally,
This drilling work was performed manually using a scoop or the like. However, this excavation work was very hard work and difficult work. In addition, since this hole excavation work is performed by excavating the ground with a scoop or the like, it is necessary to excavate a hole wider than a required hole, resulting in a large amount of wasteful labor.

[0003] Therefore, a drilling machine has been devised which can drive a driving device to rotate a drill in a certain direction to drill a hole in the ground or the like. FIG. 11 shows a drilling machine 1 as an example of the drilling machine. The drilling machine 1 digs a hole in the ground or the like by gripping the grip portions 2 and 3 and standing vertically on the ground, driving an engine (drive device) 4 and rotating a drill 5 in a certain direction. It is configured to be able to. According to such a drilling machine 1, a hole can be dug in the ground by driving the engine 4 to make the drill 5 dig into the ground. In addition, since the drill 5 is rotated to dig a hole, a long hole can be dug in a direction in which the drill 5 bites, and a hole having a minimum required size can be dug.

[0004]

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

The inventor of the present invention has conducted intensive studies in order to provide a drilling machine capable of safely and easily digging a hole, and as a result, has arrived at the present invention.

[0006]

It is a gist of the hole Hori machine according to the present invention SUMMARY OF], by causing the driving device is driven to rotate the drill at the hole Hori machine digging a hole in the ground, before
With a main body holding means having a fixing portion to be fixed to the ground
The boring machine body with the drive and drill
A body holding hand for holding the boring machine body by pushing the boring machine body against the ground
Steps are provided, and by holding the brake,
The fixing is released and the drilling machine can slide in the direction of the drilling.
Is to be able to do so.

[0007] The gist of the drilling machine according to the present invention is as follows.
Rollers drive the drive to rotate the drill
In a drilling machine for digging a hole in the ground,
Equipped with turning direction conversion means for changing the turning direction to the opposite direction.
The rotation of the input main shaft of the rotation direction changing means is reduced.
The drill is transmitted in the opposite direction by being transmitted to the output spindle.
It is rotated in this <br/> and said drill is gradually withdrawn from the ground.

[0008] The gist of the drilling machine according to the present invention is as follows.
Rollers rotate around the output spindle in the drilling machine.
The driven gear is rotated about the input spindle.
Gears and rotated about the output spindle.
Gear is rotated with the input spindle.
That is , the drill is turned and dive into the ground .

The gist of the drilling machine according to the present invention is as follows.
Rollers rotate around the output spindle in the drilling machine.
The driven gear slides along a spline of the output spindle.
Configured to be pivoted about the output spindle
The output gear is pushed up by the driven gear.
A gear that is turned around an axis
Fitted around the gear to be rotated, around the output spindle
When the gear rotated to
The gear that is rotated around the output spindle is the circumference of the input spindle.
Pulling out of the gear that is rotated .

[0010]

In the drilling machine according to the present invention, first, the fixing portion of the body holding means for holding the body of the drilling machine is fixed to the ground. The drilling machine with the fixing part of the main body holding means fixed to the ground,
The driving device is driven to rotate the drill. When the drill is rotated, the soil on the ground is scraped up while the drilling machine body slides in the direction of the drilling, and holes are dug in the ground. Here, since a large resistance is applied to the drill from the ground, a force is applied to the drilling machine body in a direction in which the drill rotates. However, despite the fact that a force is applied in the direction in which the drilling machine body is rotated, the drilling machine is swung in the rotating direction because the fixing portion of the body holding means is fixed to the ground. There is no.

In the drilling machine according to the present invention, wherein the fixing portion of the main body holding means is a sharp tool 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 main body holding means is fixed to the ground by piercing the sharp tool into the ground, the drilling machine does not swing in the turning direction of the drill even when a large resistance force is applied to the drill from the ground.

Next, the drilling machine according to the present invention provided with a turning direction changing means for changing the turning direction of the drill in the reverse direction, with the drill sunk into the ground to a predetermined depth, The conversion means causes the drill to rotate in the opposite direction. When the drill is turned in the opposite direction, the drill is returned in the direction opposite to the direction of the excavation. When the drill is returned in the direction opposite to the direction of the drilling, the drill is easily pulled out of the ground without depending on the force of the operator.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a drilling machine according to the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a drilling machine according to the present invention. The drilling machine 10 includes a drilling machine main body 12 and main body holding means 14 for holding the main body 12 upright on the ground. The main body 12 is attached to the main body holding means 14 so as to be slidable up and down with respect to the main body holding means 14.

The body 12 pushes a drill 16 to the ground,
By driving the engine (drive device) 18 to rotate the drill 16 in a certain direction, a hole can be dug in the ground. The rotation of the main shaft of the engine 18 is configured to be decelerated by a speed reducer built in the engine 18. Drill 16
Is configured to be rotatable via the rotation direction converting means 20, and is configured to be able to reverse the rotation direction of the drill 16.

As shown in FIG. 2, FIG. 3, or FIG. 4, the turning direction changing means 20 rotates the gear 22 which is turned around an input main shaft 34 and the gear 22 which is turned around an output main shaft 40. Gears 24 and 26, gears 28 and 30 rotated about a counter spindle 52, a gear 32 meshed with the gears 26 and 30, and a sliding lever 33 for sliding the gears 24 and 30 up and down. It is comprised including.

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 speed reducer. In addition, one end of the gear 22 is provided with a fitting portion 36 which has teeth cut on the inner surface and into which the gear 24 is fitted.

The gear 24 has a tooth portion 38 fitted to the fitting portion 36 of the gear 22 and a spline 4 of the output main shaft 40.
2 and a sliding recess 50 in which a sliding member 48 of a vertically movable jig 46 that is moved up and down is slidably engaged.
That is, when lifted by the vertical movement jig 46, the teeth 38 are fitted to the fitting portions 36 of the gear 22 to transmit the rotation of the gear 22 to the output main shaft 40, and when the gear 22 is lowered, 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 jig 54 that is moved up and down by a sliding lever 33. When the gear 32 is lowered by the vertical jig 54, the gear 32 meshes with the gears 30 and 26 to rotate the gear 30. Is transmitted to the gear 26 so that the gear 26 is not engaged with any gear when lifted.

Next, as shown in FIG. 4, the sliding lever 33 for vertically moving the vertically moving jigs 46 and 54 is operated by sliding the sliding lever 33 vertically. The vertical moving bar 58 to which the vertical moving jigs 46 and 54 are fixed is configured to be vertically moved while sliding with respect to the sliding shaft 60. That is, by raising the sliding lever 33, the vertical moving 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 by lowering sliding lever 33
And 54 are raised so that the gear 32 does not mesh with any gear while the gear 24 fits into the fitting 36 of the gear 22.

As shown in FIG. 1, the main body holding means 14 includes two holding members 62 for holding the main body 12, two pawls 64 on which the holding member 62 is slid, and two Frame 66 fixed to the upper end of pole 64
And a frame 68 fixed to the lower ends of two poles 58. The holding member 62 is a pole 64
The sliding member 70 includes a sliding member 70 slidably inserted therein and a handle 72 fixed to the sliding member 70. The handle 72 is provided with a brake 74 for fixing the holding member 62 to the pawl 64. When the brake 74 is gripped, the fixing is released and the holding member 62 can slide on the pawl 64. It is configured as follows. The pole 64 has a sharp tool (fixed portion) 76 at one end.
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 be a stopper at the upper end of the holding member 62 that is 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 such that the drilling machine 10 can be stabilized on the ground by stepping on the foot when performing a drilling operation. .

In the drilling machine 10 having such a configuration, first, the handle 72 is gripped and set up on the ground.
6 is pierced into the ground, and the frame 68 is stepped on with the foot. When the sharp tool 76 is pierced into the ground and the frame 68 is stepped on with the foot, the drilling machine 10 is stably erected on the ground. In the drilling machine 10 in which the sharp tool 76 is pierced into the ground and erected on the ground, the engine 18 is operated with the sliding lever 33 of the turning direction converting means 20 lowered. When the engine 18 is operated, the input main shaft 34 of the rotation direction changing means 20 is rotated via a speed reducer built in the engine 18.

Here, since the sliding lever 33 is lowered, the lever 56 is operated, and the vertically moving rod 58 is pushed up. Since the vertical movement bar 58 is pushed up, the vertical movement jig 46 is pushed up and the gear 24 is pushed up. When the gear 24 is pushed up, the teeth 38 of the gear 24 are fitted to the fitting portions 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 spindle 34
And the gear 24 is rotated together with the gear 22. By rotating the gear 24 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 a sliding member 4 of the vertical jig 46.
8 while being rotated.

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 sinks into the ground while pushing through the soil with its tip claws 61. Go out. In addition,
Brake 7 fixing holding member 62 to pole 64
4, the fixing member is released and the holding member 62 becomes slidable. As the drill 16 goes down into the ground, the main body 12 slides down along the pole 64 and moves down on the ground. A hole is dug. Here, since a large resistance force is applied to the drill 16 from the ground, a force is applied in a direction in which the main body 12 is rotated. But,
Although the force is applied in the direction in which the main body 12 is rotated, the pin 76 is pierced into the ground and the frame 68 is stepped on with the foot, so that the excavator 10 is stably stood on the ground. The boring machine 10 is not swung in the turning direction.

Next, with the drill 16 sunk into the predetermined depth, the sliding lever 33
Is pushed up as shown in FIG. Sliding lever 3
When 0 is pushed up, the vertical jig 46 is pushed down, and the gear 24 is pushed down and pulled out from the fitting portion 36 of the gear 22. When the gear 24 is pulled out of the fitting portion 36, the gear 24 is not meshed with any gear.

On the other hand, when the vertical jig 54 is pushed down, the gear 32 is engaged with the gears 30 and 26. When the gear 32 meshes with the gears 30 and 26, the rotation of the input main shaft 34 causes the gears 22 and 2 to rotate.
Via 8, 30, 32 and 26, the power is converted in the reverse 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. When the drill 16 is rotated in the opposite direction, the drill 16 is pulled out of the ground without depending on the force of the operator. Further, since the rotation of the input spindle 34 is decelerated and transmitted to the output spindle 40, the drill 16 is gradually pulled out from the ground, so that the drill 16 can be pulled out safely.

According to such an excavating machine 10, the main body 12
Even if a large resistance is applied to the drill 16 from the ground in the direction in which the drill is rotated, the sharp tool 76 is pierced into the ground and the frame 68 is stepped on with the foot to stably stand the drilling machine 10 on the ground. Therefore, the excavator 10 is not swung in the rotation direction. Therefore, the handle 72
The worker holding the drill can safely perform the drilling work without disturbing the posture in the rotation direction of the drill 16.
Further, by piercing the sharp tool 76 into the ground, the drilling machine 10 can be easily stabilized and can be erected on the ground.
Further, the main body 12 can be slid along the pole 64 in the direction of excavation to perform excavation work. For this reason, the excavation work can be easily performed.

Further, by pushing up the sliding lever 33, the rotation of the output main shaft 40 can be changed in the opposite direction. Therefore, the drill 16 can be easily pulled out of the ground without relying on the force of the operator. In addition, the drill 16 can be rotated in the opposite direction to pull out the drill 16 at a substantially constant speed, so that the operation of pulling out the drill 16 can be performed safely. Further, the rotation of the input spindle 34 can be reduced and transmitted to the output spindle 40, and the drill 16
Of the drill 16 can be safely pulled out from the ground.

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

For example, a drilling machine having the main body holding means 14 and not having the turning direction changing means 20 may be used.
With such a drilling machine, the drilling operation can be performed more safely and easily than the conventional drilling machine. Further, a drilling machine having the rotation direction changing means 20 and not having the main body holding means 14 may be used. With such a drilling machine, the drilling operation can be performed more safely and easily than the conventional drilling machine.

Further, as shown in FIG. 5, the main body holding means 14 of the drilling machine 10 according to the present invention can be fixed to the ground by driving a pile (fixing portion) 75 through the frame 68 and driving it into the ground. You may do it. By driving the pile 75 through the frame 68 and driving it into the ground,
The main body holding means 14 can be more stably fixed to the ground.

The drilling machine according to the present invention may be a drilling machine having the main body holding means 80 shown in FIG. The main body holding means 80 has a configuration in which the tips of two poles 82 are branched into two, and a total of four sharp tools 76 are provided at the respective tips. Such 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 drilling machine can be more stably set on the ground.

Further, the drilling machine according to the present invention may be a drilling machine having the main body holding means 84 shown in FIG. The main body holding means 84 is attached to a sliding member 86 via a spring 88 so that the main body 12 can be elastically slightly rotated in the rotation direction of the drill 16. The drilling machine provided with the main body holding means 84 can move the handle 90 from the main body 12 when the rotation of the drill 16 is started or when the rotation is accelerated.
The addition of the turning direction to is alleviated by the expansion and contraction of the spring 88. According to the drilling machine provided with such a main body holding means 84, the handle 88 is provided by the spring 88.
0 can be reduced, so that the handle 90
The safety of the worker who performs the excavation work with the work can be further improved.

The drilling machine according to the present invention may be a drilling machine provided with the main body holding means 85 shown in FIG. The main body holding means 85 has two poles 8 at one end of the frame 66.
7 is attached. The pole 87 is provided with a sharp tool (fixing tool) 89 at the tip, and is adjustable in length by a screw 91. The main body holding means 85 can stab the pin 76 into the ground and a sharp tool 89 into the ground to fix the main body holding means 85 diagonally to the ground. Therefore, the 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
Can be fixed horizontally to perform horizontal drilling work.

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

Here, when the gear 96 is rotated, the concave member 1 in which the sliding member 110 of the direction changing lever 108 is slid.
12, a gear shaft 116 that can slide in a hollow portion of the output main shaft 40, and a spline 1 provided on the gear shaft 116.
14 are provided. When the direction changing lever 108 is pressed down, the spline 114 of the gear 96 is slid along the main shaft 40 to push up the gear 96 and engage 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 so that the gear 96 can mesh with the gear 106. That is, when the direction changing lever 108 is pressed 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 changing lever 108 is pushed up, the input main shaft 34 is rotated. Rotation of gears 94, 100, 10
It is configured to be transmitted to the output main shaft 40 via 4, 106 and 96.

The rotating direction changing means 92 having such a structure pushes down the direction changing lever 108 to thereby rotate the gear 9.
6 is pushed up and meshes with the gear 102. The gear 96 meshes with the gear 102 so that the gear 96
The input main shaft 34 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, when the direction changing lever 108 is pushed up, the gear 96 is pushed down and meshes with the gear 106. As the gear 96 meshes with the gear 106,
Gears 96 are gears 94, 100, 104, 106 and 96
Is rotated in a direction opposite to that of the input main shaft 34. By rotating the gear 96 in a direction opposite to the input main shaft 34, the output main shaft 40 is rotated in a direction opposite to the input main shaft 34.

The direction of rotation of the output main shaft 40 can also be changed by the direction changing lever 108 even with a drilling machine having such a turning direction changing means 92. Thus, the drill 16 can be easily pulled out from the ground by reversing the rotation direction of the drill 16.

The drilling machine according to the present invention may be a drilling machine provided with the turning direction changing means 120 shown in FIG. The rotation direction changing means 120 includes a gear 122 rotated around the input main shaft 34, a gear 126 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 by being pushed up by the direction changing lever 124 and to mesh with the gear 128. 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 turning direction changing means 120 pushes up the direction changing lever 124 so that the gear 126 meshes with the gear 128 and the rotation of the input main shaft 34 causes the gear 1 to rotate.
It is transmitted in the opposite direction via 22, 128 and 126.
On the other hand, by pushing down the direction changing lever 124,
The gear 126 is fitted to the gear 122 and the input spindle 3
4 is transmitted in the same direction via the gear 126.
The turning direction of the output main shaft 40 can also be changed by the direction changing lever 124 by the drilling machine having the turning direction changing means 120. In addition, since the turning direction converting means 120 has a relatively simple mechanism, it can be manufactured at an easy cost.

As described above, various embodiments of the excavator according to the present invention have been described with reference to the drawings. However, the excavator according to the present invention is not limited to the illustrated excavator. For example, the driving device of the main body is not limited to the above-described engine, and may be an electric motor, a pulse motor, or the like. Further, a drive device including a centrifugal clutch device configured to limit the rotation of the main shaft by the centrifugal force when the main shaft rotates at a certain rotation speed or more may be used. Alternatively, a drive device including 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 may be used. Further, the shape of the drill is not limited to the above-described shape of the drill, and any shape may be used as long as it can be turned to dig a hole by breaking up soil on the ground. Also,
The drill is not limited to the drill having a fixed length as described above, and may be a drill whose length can be adjusted by adding a shaft.

Further, 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 for holding the excavator body is slid is not limited to two, and may be one or three or more. Further, the shape of the handle is not limited to the shape of the handle described above, and may be configured to be branched into several pieces so that a plurality of workers can hold the handle. further,
The body holding means without the handle may be configured so that the drill bites into the ground by the weight of the body of the drilling machine. Further, the sharp tool that pierces the ground is not limited to the above-described sharp tool, and may be a tool having spiral teeth and configured to be screwed into the ground.

The turning direction changing means is not limited to the above-described turning direction changing means. For example, a reversible motor may be used as the driving device, and the rotation direction may be changed by a switch. In addition, the present invention can be practiced in various modified, modified, and modified embodiments based on the knowledge of those skilled in the art without departing from the spirit thereof.

[0045]

According to the drilling machine according to the present invention, since the fixing portion of the main body holding means for holding the drilling machine main body is fixed to the ground, the drill is rotated from the ground in the direction in which the drill is rotated. Even if a large resistance force is applied, the excavator does not swing in the turning direction. For this reason, the worker holding the excavator can safely perform the excavation work without losing his posture in the turning direction of the drill. The drilling operation can be performed by sliding the drilling machine body in the drilling direction. For this reason, the excavation work can be easily performed.

According to the drilling machine of the present invention, wherein the fixing portion of the main body holding means is a sharp tool pierced into the ground,
Since the drilling machine can stably pierce the ground by piercing the sharp tool into the ground, the drilling machine does not swing in the turning direction. Further, the main body holding means can be easily fixed to the ground by piercing the sharp tool into the ground.

Further, according to the drilling machine of the present invention provided with a turning direction changing means for changing the turning direction of the drill to the opposite direction, the turning is performed with the drill sunk into the ground to a predetermined depth. By turning the drill in the reverse direction by the direction changing means, the drill can be returned in the direction opposite to the direction of the drilling. Therefore, the drill can be easily pulled out of the ground without depending on the force of the operator. In addition, since the drill can be rotated in the opposite direction to return the drill in the direction opposite to the direction of the drilling, the drill can be gradually pulled out of the ground at a substantially constant speed. For this reason, the operation of pulling out the drill can be performed safely.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a drilling machine according to the present invention,
FIG. 1A is a front view, and FIG. 1B is a side view.

FIG. 2 is a front sectional view showing a turning direction changing means of the excavator shown in FIG. 1;

FIG. 3 is a plan sectional view showing a turning direction changing means of the excavator shown in FIG. 1;

FIG. 4 is a partially broken side view showing a turning direction changing means of the excavator shown in FIG. 1;

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

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

FIG. 9 is a front sectional view showing still another embodiment of the drilling machine according to the present invention, showing a turning direction changing means.

FIG. 10 is a front sectional view showing still another embodiment of the drilling machine according to the present invention, showing a turning direction changing means.

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

[Explanation of symbols]

 10; drilling machine 12; drilling machine body 14, 80, 84, 85; body holding means 16; drill 18; engine (drive device) 20, 92, 120; Fixed part) 75; pile (fixed part)

Claims (4)

(57) [Claims] 1. A body holding means having a fixing portion fixed to the ground in a drilling machine for digging a hole in the ground by driving a driving device to rotate a drill.
And a boring machine body provided with the driving device and a drill.
Main body holding to hold the excavator main body by pushing against the ground
Means for drilling the body by gripping the brake
Is released and the drilling machine slides in the direction of the drilling
An excavating machine characterized by being made possible . 2. A driving device is driven to rotate a drill.
In the drilling machine for digging a hole in the ground, the turning direction of the drill is changed to the opposite direction.
Conversion means, and the rotation of the input main shaft of the rotation direction conversion means is
By being decelerated and transmitted to the output spindle, the drill
Is turned in the opposite direction and the drill is pulled out of the ground
An excavating machine characterized by being removed. 3. The tooth pivoted about said output spindle.
A car fits on a gear that is turned around the input spindle
Gears that are rotated about the output spindle
By being rotated with the main shaft, the drill
It is characterized by being swiveled into the ground
An excavator according to claim 2. 4. A tooth pivoted about said output spindle.
The car is slid along the spline of the output spindle
Gear that is configured to rotate about the output main shaft.
Is pivoted around the output spindle by being pushed up
Gear being rotated about the input spindle
Gear, and rotated about the output spindle.
When the gears are pushed down, around the output spindle
Gear is rotated around the input spindle.
4. The device according to claim 3, wherein
An excavator to be described.