KR101844563B1 - Boring machine able to drive in forward and reverse - Google Patents

Abstract

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a perforator used for perforating a hole in a ground for installing a vinyl house or a pillar or the like in a farmland, and more particularly to a perforator for vertically rotating a drill bit by operating a handle will be.
A gear case for enclosing an interlocking bevel gear engaged with a drive bevel gear and a driven bevel gear which receive the power of the drive shaft for this purpose, and a head cap having a center through which the spline shaft to which the interlocking bevel gear is coupled is supported by the bearing; A boss shaft which is formed at a lower portion of the head cap and is coupled to the outside of the spline shaft and is formed at a lower side thereof, a holder which is connected to a bearing at an upper portion of the boss shaft, A handle coupled to the holder through a pair of operating grooves and operating grooves formed opposite to the outer circumferential surface of the head case; and a forward / A reduction gear box configured to be rotatable; And a connection shaft having one end connected to the output shaft formed at the center of the reduction gear box and the other end connected to the bit, the shaft case being formed on the lower side of the reduction gear box and the shaft case, So that it is possible to easily take out the stake embedded in the ground as well as the drilling function.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a boring machine,

The present invention relates to a ground drilling machine capable of forward and reverse drive, and more particularly, to a perforator used for drilling a hole in a ground for installing a plastic house or a pillar in a cultivated land, The present invention relates to a ground drilling machine capable of rotating in the forward and reverse directions.

Generally, in a rural area, when a structure such as a vinyl house or a pillar or the like is installed on a farm or agricultural land where crops are to be grown, a hole having a predetermined depth is formed in the ground to be installed in advance or a bracket Is buried by using a small perforator.

Previously, as disclosed in Korean Utility Model Publication (U) 1999-0034837, a certain length of peak portion is replaceably coupled to a lower portion of a cylindrical piercing in order to form a hole with a predetermined depth at an accurate position, Shaped puncturing portion having a predetermined weight is movably engaged with the pressing portion of the bar-shaped pressing portion with a predetermined weight, and a perforator including a bar-shaped handle portion extending straight in opposite directions to easily detach the peaks at the time of perforation, .

However, since the perforator of the above-described construction is manually operated by the operator, a large labor force is required and the perforating operation is very inefficient.

In recent years, a self-drilling machine using an engine has been disclosed in a registered utility model publication No. 0441962. In this structure, a drive ring and a driven wheel are provided through a drive connection portion and a driven connection portion, respectively, A body to which the handle is connected; An engine installed in the body to generate power; A drill unit having an upper end connected to a moving plate movable along a guide bar formed in a vertical direction on both sides of a fixing plate installed on the body; A drive unit for driving the drive wheel with power generated from the engine unit; A rotating drilling unit for rotating the drill unit with the power generated from the engine unit; A vertically moving part for vertically moving the drill part with the power generated from the engine part; And an operating portion for adjusting the output direction of power for operating the driving portion, the rotating perforation and the up-and-down moving portion from the engine portion.

However, since the drill is exposed to the outside, the perforator of the above-mentioned structure can not easily be taken out by reversing the rotation of the drill, There is a demand for a perforator of a new structure.

KR Room 1999-0034837 U (1999.09.06.) KR 20-0441962 Y1 (2008.09.18.)

The present invention has been made to solve the above-described problems of the prior art,

The present invention provides a perforator capable of driving a perforator in a forward and reverse direction only by a simple operation of a handle located at the top of a perforator and capable of providing a perforator with a structure in which a rotating drill bit is not exposed to the outside, And to solve these problems.

Another solution is to provide a perforator including means for minimizing mechanical damage due to an overload occurring during drilling operation.

On the other hand, other unspecified objects of the present invention may be further considered within the scope of the following detailed description and easily deduced from the effects thereof.

In order to achieve the above object, according to the present invention, there is provided a ground penetrator capable of forward and reverse drive, wherein a driven bevel gear for receiving power from a drive shaft and an interlocking bevel gear for vertically engaging with the driven bevel gear are disposed inside A head cap which is centrally passed through so that a spline shaft to which a driven shaft connected to the center of the interlocking bevel gear is coupled is supported by a bearing, and a head cap which is formed at a lower portion of the head cap and which is coupled to the outside of the spline shaft A head case having a boss shaft having a sun gear formed in a lower side thereof, a holder connected to the bearing at an upper portion of the boss shaft, and a spring elastically urged between the holder and the head cap, and a pair of operating grooves formed to face the outer circumferential surface of the head case, A handle fixedly coupled to the holder through a working groove; Was coupled to the side of elevating the sun gear to the steering wheel operation so that the forward and reverse drive achieved configured reduction gear box; And a connection shaft having one end connected to the output shaft formed at the center of the reduction gear box and the other end connected to the bit fixing table, the shaft case formed below the reduction gear box and the shaft case inside the shaft case.

A second tube which is hooked on a lower end of the outer surface of the shaft case and ascends and descends along a longitudinal direction of the shaft case, a second tube which is hooked on a lower end of the first tube and is lifted in the longitudinal direction from the outer surface of the first tube, And a third tube which is hooked to the lower end of the tube and is lifted up and down in the longitudinal direction from the outer surface of the second tube.

According to the concrete means for solving the above-mentioned problems,

Since it can change the direction of rotation of the perforator, it has the advantage of not only puncturing but also easy removal of the stake embedded in the ground,

It is possible to provide a telescopic type protective case on the outside of the drill bit to prevent puncture soil or stones from being scattered and to provide a perforator with excellent safety,

It is possible to provide a perforator having excellent durability by providing an overload preventing means to minimize the overload applied to the engine.

1 is a perspective view showing a preferred embodiment of a ground penetrator capable of forward and reverse drive provided by the present invention.
Fig. 2 is an exploded perspective view of Fig.
Figure 3 is a cross-sectional view of the ground perforator
4 is an exploded perspective view of the reduction gear box
5 is a plan view of the gear box showing the forward rotation state
6 is a front cross-sectional view of the gear box showing the forward rotation state
7 is a plan view of a gear box showing a reverse rotation state
8 is a front section view of the gearbox showing the reverse rotation state
9 is a front section view showing another embodiment of the ground penetrator
10 is an exploded perspective view of the overload preventing means of the ground drilling machine.
11 is a cross-sectional view of the overload preventing means

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

The present invention relates to a perforator for excavating a ground for installing a structure such as an ornamental shade or a vinyl house in a cultivation or cultivation field or the like and using the power supplied by a small internal combustion engine, The punching operation can be performed, and the operation for extracting the embedded pillar can be easily performed by enabling the forward and reverse driving.

FIG. 1 is a perspective view showing a preferred embodiment of a ground boring machine capable of forward and reverse drive provided by the present invention, in which power supplied by a small engine is transmitted through a flexible shaft 3 in the hose 2, An engine is mounted on a backing frame so that the worker can wear the same on the back of the worker as in a lawnmower and the work grip 4 that can be grasped by both hands is symmetrically formed on the end of the flexible shaft 3 to which the power is transmitted A lever 4a for shifting the rpm of the engine is disposed in front of one side grip 4 to adjust the amount of fuel flowing into the engine, thereby facilitating operation in a convenient posture.

FIG. 2 is an exploded perspective view of a ground drilling machine capable of forward and reverse drive. FIG. 3 is a front sectional view of a ground drilling machine. Referring to the drawings, a drive bevel gear 6 and a drive bevel gear 6 is vertically interlocked with the gear case 5 and the end of the gear case 5 and the flexible hose 2 is grasped by the operator with a hand to perform a drilling operation on the ground surface The grip 4 is formed on the opposite side of the gear case 5 so that the grip 4 having the same height as the grip 4 is formed.

The interlocking shaft 8 connected to the center of the interlocking bevel gear 7 is coupled to the spline shaft 12 within the head case 10 located below the gear case 5, And is rotated through the center of the head cap 9 which hermetically seals the upper portion of the case 10.

The boss shaft 13 coupled to the outside of the spline shaft 12 is integrally formed with the sun gear 14 on the lower side so that the driving force transmitted to the spline shaft 12 coupled to the interlocking shaft 8 is transmitted to the sun gear 14 To the planetary gear of the reduction gear box 20 to be engaged, and the upper part of the boss shaft 13 is connected to the holder 15 through the bearing.

A clip groove 13a is formed at an upper end of the boss shaft 13 so that when the holder 15 is lifted up by the handle 16 while preventing the bearing from being disengaged by fixing the clip 17 in the groove, The boss shaft 13 hooked on the standing clip 17 is moved up and down.

A coil spring 18 is installed in the space between the head cap 9 and the holder 15 inside the head case 10 so that the holder 15 and the boss shaft 13 connected to the upper portion are always pressed downward, Shaped operating grooves 11 are formed on the outer peripheral surface of the head case 10 so that the handle 16 is screwed to the holder 15 through the operating grooves 11. [

The handle 16 is for lifting and lowering the sun gear 14 and is configured to hold the handle 16 located at the lower side of the vertical groove 11a and turn it to the side of the horizontal groove 11b to be fixed to the handle 16 The holder 15 is lifted up and down by the sun gear 14 formed on the lower side of the boss shaft 13 and the handle 16 is held firmly in the operating groove 11 by the repulsive force of the compressed coil spring 18 You can.

A decelerating gear box 20 is formed below the head case 10 to allow the sun gear 14 to ascend and descend by a handle so that the drill bit 34 can be driven in the forward and reverse directions.

4 is a disassembled perspective view of the reduction gear box 20. Referring to the drawing, the housing 28 composed of a case 28a and a lid 28b in which bearings are housed in a central portion is provided, and the ring gear 21 And is tightly coupled to the inside of the case 28a so as to be formed along the circumferential direction inside the housing 28. [

The first planetary gear 22 is located on the lower side of the ring gear 21 and is engaged with the inside of the first planetary gear 22 and the turning gear 23 engaging with the sun gear 14 is located .

The second planetary gear 24 is located above the ring gear 21 and is engaged with the sun gear 14 that is raised and lowered upward to operate the ring gear 21.

The first planetary gear 22, the turning gear 23, and the second planetary gear 24 are preferably symmetrically opposed to each other with respect to the shaft center for smooth operation and weight balance as shown in the figure.

An upper carrier 25 having a groove through which the boss shaft 13 passes is positioned at the center of the ring gear 21 and a lower carrier 26 having an output shaft 27 integrally formed at a lower portion thereof The upper and lower carriers 25 and 26 are provided with a vertical gap 22 between the ring gears so as to revolve around the center of the boss shaft 13 by rotation of the sun gear 14 unlike the ring gear 21 fixed to the inside of the housing 28. [ the upper and lower carriers are coupled to each other by a connecting pin 29 so that the upper and lower carriers 25 and 26 are separated by a predetermined distance so that the diameter of the upper and lower carriers 25 and 26 is smaller than the outer diameter of the ring gear 21 do.

On the other hand, on the inner surface of the upper and lower carriers, axial shafts 25a and 26a, which are engaged with the center axes of the first planetary gear, the turning gear, and the second planetary gear 24, .

A cylindrical shaft case 31 is coupled to the lower side of the reduction gear box 20 constructed as described above and one end is connected to the output shaft 27 formed in the center of the reduction gear box 20 inwardly, The ground drilling machine 1 can be driven in the forward and backward directions provided by the present invention.

When drilling the floor, a drill bit 34 is coupled to the lower portion of the connection shaft 32, and a suitable drill bit 34 may be used in combination with the drill width and depth.

9 is a front cross-sectional view showing another embodiment of the ground drilling machine. Referring to FIG. 9, there is shown a telescopic drill cover 35 for preventing the drill bit 34 from being exposed to the lower side of the shaft case 31 .

To this end, the first tube 35a is coupled to the lower end of the outer surface of the shaft case 31 so as to be protruded downward, and the first tube 35a is fastened to the lower end of the first tube 35a so as to be lifted in the longitudinal direction from the outer surface of the first tube 35a. And a third pipe 35c which is engaged with the second pipe 35b and which is hooked to the lower end of the second pipe 35b and is lifted in the longitudinal direction from the outer surface of the second pipe 35b, So that the drill bit 34 is not exposed to the outside.

When the drill bit 34 that goes down through the ground is exposed to the outside, the bit rotates at a high speed to cause dust, and the work environment is deteriorated. There is a possibility that the stone or gravel buried in the ground is scattered and the operator is injured. The drill cover 35 is also expanded and contracted as the drill bit 34 penetrates through the ground surface. As a result, It has the advantage that the exposure of the bit can be completely blocked.

Fig. 10 is an exploded perspective view of the overload preventing means of the ground drilling machine, and Fig. 11 is a front sectional view of the overload preventing means.

10 and 11, the overload preventing means 4 is further provided on the lower side of the output shaft so that the connecting shaft 32 can be automatically separated when the drill bit is overloaded when drilling.

To this end, a driving cam 41, whose gear teeth protrude in the direction of the center axis in the direction of the lower surface of the lower face, is inserted through the output shaft. The driving cam 41 meshes with the gear teeth of the driving wheel 41, A driven wheel 42 provided with a connecting shaft 43 having a key groove 43a is provided.

The connecting shaft 43 is formed with a coupling groove into which a connecting shaft is inserted at an upper portion and a connecting shaft 32 having a long hole 32a longer than the height of the key 44 is coupled to one side of the connecting shaft 43, The key 44 can be coupled to the key groove 43a formed in the connecting shaft 43 to transmit the rotational force of the driven wheel 42 engaged with the driving wheel 41 to the connecting shaft. It is desirable to secure the bolt-on key to the keyway as shown.

A screw thread is formed on the outer side of the upper portion of the connection shaft 32 so that the tightening nut 45 can be fastened to the fastening nut 45. One end of the fastening nut 45 is in contact with the lower surface of the driven wheel 42, A compression spring 46 is provided so as to be elastically deformed.

When the drill bit 34 strikes a rock or a stone buried in the ground and a load greater than the compression force of the compression spring 46 is applied when the drill bit is drilled when the ground is drilled, The driven wheel 42, which is engaged with the continuously rotating drive wheel 41 by the gear teeth, overcomes the compressive force of the spring 46 and momentarily moves downward to block the connection shaft from being separated from the overload transmitted to the engine, The tension of the compression spring can be adjusted to adjust the size of the load to be interrupted.

Hereinafter, the operation of the ground drilling machine 1 according to the present invention will be described with reference to the drawings.

5 is a plan view of a gear box showing a forward rotation state, and FIG. 6 is a front sectional view of a gear box showing a forward rotation state.

The power generated from the engine is transmitted to the interlocking shaft 8 via the bevel gear in the gear case 5 and the lower end of the interlocking shaft 8 is connected to the spline shaft 12 to which the boss shaft 13 is coupled, And the sun gear 14 formed at the lower end of the boss shaft 13 is rotated.

5 and 6, an upper portion of the boss shaft 13 on which the sun gear 14 is formed is connected to a holder 15 to which a steering wheel 16 supported by a bearing is fixed, A coil spring 18 is disposed between the head cap 9 and the sun gear 14 so that the sun gear 14 always engages with the turning gear 23 due to the repulsive force of the coil spring 18.

Therefore, when the sun gear 14 rotates in the clockwise direction, the first planetary gear 22 rotates clockwise via the turning gear 23, and the ring gear 21 is fixed to the housing, The upper carrier 25 coupled with the connecting pin 29 and the lower carrier 26 rotate together with the sun gear 14 in the counterclockwise direction so that a counterclockwise rotational force is transmitted to the output shaft 27, The number of revolutions is reduced by the gear ratio of the sun gear 14 and the ring gear 21 at that time.

FIG. 7 is a plan view of a gear box showing a reverse rotation state, and FIG. 8 is a front sectional view of a gear box showing a reverse rotation state.

Conventionally, a heavy equipment such as a crane has to be used in order to take out a screw-shaped post that is firmly embedded in the ground. However, in the ground drilling machine 1 provided in the present invention, a worker moves the handle 16 hooked to the vertical groove 11a The holder 15 fixed to the handle raises and lowers the sun gear 14 formed on the lower side of the boss shaft 13 by the repulsive force of the compressed coil spring 18, The handle 16 is held tightly in the horizontal groove 11b. At this time, the sun gear 14 is engaged with the second planetary gear 24 as shown in the drawing.

Therefore, when the sun gear 14 rotates clockwise, the second planetary gear 24 rotates in the counterclockwise direction. Since the ring gear 21 is fixed to the housing, the ring gear is interposed between the link pin 29 The combined upper and lower carriers 25 and 26 revolve together with the sun gear 14 in the clockwise direction to rotate the output shaft 27 to reduce the rotational speed and to transmit the rotational force in the clockwise direction.

While the present invention has been described in connection with what is presently considered to be the most practical embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the scope of protection of the present invention is not limited to the above-described embodiments, but the scope of the claims of the following claims and the scope of protection from these techniques to equivalent technical means should be acknowledged.

1: Ground drilling machine
2: Hose 3: Flexible shaft 4: Grip 4a: Lever 5: Gear case
6: driven bevel gear 7: interlocking bevel gear 8: interlocking shaft 9: head cap
10: Head case 11: Operation groove 11a: Vertical groove 11b: Horizontal groove
12: Spline shaft 13: Boss shaft 13a: Clip groove 14:
15: holder 16: handle 17: stand clip 18: coil spring
20: Reduction gear box
21: ring gear 22: first planetary gear 23: turning gear 24: second planetary gear
25: upper carrier 25a: shaft groove 26: lower carrier 26a: shaft groove
27: output shaft 28: housing 28a: case 28b: cover 29: connecting pin
31: shaft case 32: connecting shaft 32a: elongated hole 34: drill bit
35: drill cover 35a: first pipe 35b: second pipe 35c: third pipe
40: Overload prevention means
41: driving wheel 42: driven wheel 43: connecting shaft 43a: keyway
44: key 45: tightening nut 46: compression spring
h: vertical gap

Claims (4)

A gear case 5 in which a driven bevel gear 6 receiving power from the drive shaft and an interlocking bevel gear 7 vertically engaged with the driven bevel gear 6 are sealed inside;
A head cap 9 passing through the center so that the spline shaft 12 to which the interlocking shaft 8 connected to the center of the interlocking bevel gear 7 is coupled is supported by the bearing;
A boss shaft 13 formed at the lower portion of the head cap 9 and coupled to the outside of the spline shaft 12 and having a sun gear 14 at the lower side, A head case 10 configured to seal a spring between the holder 15 and the holder 15 and the head cap 9;
A handle 16 fixedly coupled to the holder 15 through a pair of operating grooves 11 and operating grooves 11 formed to face the outer peripheral surface of the head case 10;
A first planetary gear 22 and a second planetary gear 22 disposed at different heights in the head case 10 by raising and lowering the sun gear 14 by operating the handle 16, 24) so that the lower output shaft (27) is driven forward and backward;
A shaft case 31 coupled to a lower center of the reduction gear box 20;
And a connection shaft (32) having one end connected to the output shaft (27) exposed at the lower center portion of the reduction gear box (20) inside the shaft case (31) and the other end connected to the bit. Possible ground penetrators.
A gear case 5 in which a driven bevel gear 6 receiving power from the drive shaft and an interlocking bevel gear 7 vertically engaged with the driven bevel gear 6 are sealed inside;
A head cap 9 passing through the center so that the spline shaft 12 to which the interlocking shaft 8 connected to the center of the interlocking bevel gear 7 is coupled is supported by the bearing;
A boss shaft 13 formed at the lower portion of the head cap 9 and coupled to the outside of the spline shaft 12 and having a sun gear 14 at the lower side, A head case 10 configured to seal a spring between the holder 15 and the holder 15 and the head cap 9;
A handle 16 fixedly coupled to the holder 15 through a pair of operating grooves 11 and operating grooves 11 formed opposite to the outer circumferential surface of the head case 10;
A first planetary gear 22 and a second planetary gear 22 disposed at different heights in the head case 10 by raising and lowering the sun gear 14 by operating the handle 16, 24) so that the lower output shaft (27) is driven forward and backward;
A shaft case 31 coupled to a lower center of the reduction gear box 20;
A driving wheel (41) coupled to the output shaft (27) inside the shaft case (31) and having a gear teeth protruded axially downward;
A driven wheel 42 which is engaged with the gear teeth of the driving wheel 41 and has a coupling shaft 43 protruding from a lower center thereof and having a key groove 43a to which a key 44 is coupled;
A long hole 32a having a longer length than the vertical length of the key 44 is formed on the upper portion of the key shaft 44 so that the connection shaft 43 is coupled to the left and right rotations in a constrained manner by a key 44 inserted into the long hole 32a, A connection shaft (32) coupled with the bit;
And a compression spring 46 elastically provided between the driven wheel 45 and the tightening nut 45. The compression spring 46 is installed between the driven wheel 42 and the tightening nut 45, Possible ground penetrators.
The method according to claim 1 or 2,
The reduction gear box (20)
A housing 28 composed of a case 28a, a lid 28b, and a bearing housed in the case and the center of the lid, respectively;
A ring gear (21) formed along the circumferential direction inside the housing (28);
A first planetary gear 22 meshing with the lower side of the ring gear 21 and a turning gear 23 meshing with the sun gear 14 positioned to be meshed with the inside of the first planetary gear and moving up and down;
A second planetary gear (24) meshing with the upper side of the ring gear (21) and being meshed with the sun gear (14) that is operated to ascend and descend from the inner side;
And the axes of the first planetary gear 22, the turning gear 23 and the second planetary gear 24 are rotated so as to be rotatable about the axis of the ring gear 21, An upper carrier 25 and a lower carrier 26 coupled;
And an output shaft (27) formed at the lower center of the lower carrier (26), wherein the forward and reverse drive of the output shaft (27) is performed by the reduced rotation speed.
The method according to claim 1 or 2,
A first pipe 35a which is engaged with the lower end of the outer surface of the shaft case 31 and moves up and down along the longitudinal direction of the shaft case 31;
A second pipe 35b which is caught by the lower end of the first pipe 35a and is lifted in the longitudinal direction from the outer surface of the first pipe 35a;
And a third pipe (35c) which is caught by the lower end of the second pipe (35b) and which is lifted in the longitudinal direction from the outer surface of the second pipe (35b). A ground penetrator capable of forward and reverse driving.

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