KR100761778B1 - Extended Drilling Screws with Hydraulic Expansion Auxiliary Drilling Blades - Google Patents

Abstract

The present invention relates to an excavation screw for auger crane for mechanized excavation of the buried hole of the electric pole or jeonju root and branch line, more specifically, the vertical fluid inlet, outlet line directly to the extension to be removed from the top of the excavation By forming the lower part of the drilling screw by combining the expansion unit having a separate mouth, exit flow path and auxiliary drilling blade,

Since the hydraulic pressure is continuously applied to the auxiliary drilling edge of the lower expansion unit in conjunction with the variable length of the drilling length of the extended drilling screw, the extended drilling screw having the auxiliary drilling blade operated by hydraulic pressure according to the depth of the excavation work can be reasonably used. The present invention relates to an extended drilling screw having a hydraulically expanded auxiliary drilling blade having a feature of shortening the construction period and greatly improving its workability.

Description

Extended excavating screw with hydraulic expansion auxiliary drilling blades {Extendable excavating screw with hydraulic excavating blade}

1 is an exploded perspective view of a drilling screw according to the present invention

Figure 2 is an enlarged perspective view of the main portion of the drilling screw according to the present invention

Figure 3 is an overall perspective view of the drilling screw according to the present invention

Figure 4 is an overall cross-sectional view of the drilling screw according to the present invention

Figure 5 is a cross-sectional view showing the main portion of the fluid inlet and outflow passage of the drilling screw according to the present invention

Figure 6 is an enlarged view of the flow path according to the length adjustment state of the drilling screw according to the present invention

Figure 7 is a cross-sectional view of the auxiliary drilling blade of the drilling screw according to the present invention is extended forward by the hydraulic pressure

8 is a cross-sectional view of a state in which the auxiliary drilling blade of the drilling screw according to the present invention is retracted and reduced by hydraulic pressure

Figure 9 is a flow diagram showing another embodiment of the drilling screw according to the present invention

Explanation of symbols on the main parts of the drawings

10: expansion unit 11,11 ': auxiliary drilling blade

12,12 ': Cylinder groove 14,14': Fluid guide pipe

15,15 ': Euro 16: cylinder

17: inlet shaft 17a: flow groove

18: piston shaft 19: piston

19a, 19b: Appearance Euro 20: Excavation Pipe

21: screw

30: extension 31: fastener

32,32 ': Entry and exit line 33: fluid hose

40,40 ': Valve groove 41,41': Double pilot check valve

50: Euro connection plate 51, 51 ': hydraulic hose

The present invention relates to an excavation screw for auger crane for mechanized excavation of the buried hole of Jeonju or Jeonju root and branch line, more specifically, the bottom of the extended drilling screw having an extension that is inserted from the top of the excavation pipe Equipped with an expansion unit having a submerged auxiliary drilling blade on the side, and the auxiliary excavation blade is a hydraulic lifting operation through the connection flow path formed in the extension tube and the expansion unit, the rational and effective use of the extended drilling screw It is directed to an extended drilling screw having a hydraulically extended auxiliary drilling blade.

In general, when constructing transmission poles and communication lines, when installing electric poles and wires electric wires and communication cables, electric poles or branch wires are installed to reinforce the unbalanced tension of electric wires and communication cables to prevent electric poles from tilting or falling down. The above-mentioned Jeonju roots shall be excavated at the position of 0.5m below the bottom surface of Jeonju after the Jeonju dry ground and be buried at the same time as Jeonju. After the preliminary test, the branch is buried at the excavation point to be connected with the pole.

Excavation work to install such a pole or branch line is usually due to the excavation screw fastened to the auger crane, 2005 patent application No. 126562 by the applicant of the present invention in order to improve the excellent mechanized work and work efficiency Korean Utility Model Registration No. 0417120 and 2006 Patent Application No. 122020 have proposed drilling screws for auger cranes having various types of submerged auxiliary drilling blades.

However, as described above, the drilling screw has a mechanical configuration in which the auxiliary drilling blades are floated by manual rotational action, which requires a plurality of workers, and wastes a lot of trouble and time, as well as a lot of trouble in adjusting the auxiliary drilling blades. Will be.

Accordingly, an excavation screw that has appeared on the hydraulic drilling of the auxiliary drilling blade of the form similar to the above has been conceived by Japanese Patent Application Laid-Open No. 13-73664.

Excavation screw having an auxiliary drilling blade by the hydraulic tapping means as described above, the use of the auxiliary drilling blade can be controlled from a remote location using the hydraulic pressure to enable more rational and effective use.

However, both the excavation screw and the excavation screw having the hydraulic submerged auxiliary drilling blade by the applicant of the present invention is limited to use only the excavation site of a limited depth, to construct an excavation site deeper than the length of the excavation screw In this case, instead of the above-mentioned excavation screw, an excavation screw having an extension pipe should be used.

Accordingly, the extension type drilling screw has an extension part which is inserted into and removed from the inside of the drilling screw at the tip end of the drilling screw, and has a characteristic that the overall length of the drilling screw is variable according to the withdrawal amount of the extension. Deep excavation construction is possible.

Accordingly, when the auxiliary drilling blade having the conventional rotary tapping means is applied to the above-mentioned extended drilling screw, it still has disadvantages in operation and hassle, and the auxiliary drilling blade having the hydraulic tapping means is difficult due to the difficulty of the fluid delivery system. It is not realized because of.

Therefore, the drilling screw used for the deep drilling is urgently required for the auxiliary drilling blade and the hydraulic appearance means of the auxiliary drilling blade to enable more reasonable drilling.

The present invention has been made to improve the problems as described above, directly forming a fluid inlet, outlet line vertically in the extension that is inserted from the upper part of the drilling screw, the mouth, outlet flow path and auxiliary divided in the lower part of the drilling screw By jointly forming the expansion unit with the drilling blade,

Since the hydraulic pressure is continuously applied to the auxiliary drilling edge of the lower expansion unit in connection with the variable state of the drilling length of the extended drilling screw, it is reasonable to use the extended drilling screw having the auxiliary drilling blade operated by the hydraulic pressure according to the depth of the drilling work. It is an object of the present invention to provide an extended drilling screw having a hydraulic expansion auxiliary drilling blade having a feature that can be used as a shortening of the construction period as well as greatly improves the workability.

Hereinafter, preferred embodiments of the present invention will be described.

1 is an exploded perspective view of the excavation screw according to the present invention, Figure 2 is an enlarged perspective view of the main portion of the excavation screw according to the present invention, Figure 3 is an overall perspective view of the excavation screw according to the present invention, Figure 4 is according to the present invention It is whole sectional drawing of drilling screw.

An expansion unit 10 having auxiliary drilling edges 11 and 11 'is coupled to the lower end of the drilling pipe 20, and a spiral screw 21 is formed on the outer circumferential surface of the drilling pipe 20 and the expansion unit 10. Is formed, in the extended drilling screw having an extension 30 to be inserted from the distal end of the drilling tube 20 and the fastener 31 of the upper end of the extension 30,

In the expansion unit 10, cylinder grooves 12 and 12 'of different heights are formed in the transverse direction, and auxiliary drilling blades 11 and 11' are formed inside the cylinder grooves 12 and 12 '. The inlet shaft 17 having a built-in, and the upper portion of the expansion unit 10 is divided into a vertical fluid guide tube 14, 14 ', the flow path 15 formed in the expansion unit 10 15 'allows fluid in the fluid guide pipes 14 and 14' to flow into and out of the cylinder grooves 12 and 12 ',

The extension 30 forms a vertically penetrating entry and exit line 32 and 32 'into which the fluid guide pipes 14 and 14' are inserted, and the entry and exit lines 32 and 32 'are fastened. To the fluid hose 33 coupled to the sphere 31,

The fluid induction pipes 14 and 14 'are slid inside the entry and exit lines 32 and 32' together with the extension 30 inserted into and out of the drilling pipe 20, and continuous fluid movement is achieved. Accordingly, the output shaft 17 having the auxiliary drilling blades 11 and 11 'is configured to operate.

Here, a separate flow path connecting plate 50 is fixedly formed on the lower portion of the drilling pipe 20, and the fluid guide pipes 14 and 14 'are disposed above the flow path connecting plate 50. ) Are vertically connected, and the flexible hydraulic hoses 51 and 51 'coupled to the fluid induction pipe 14 and 14' are formed at the lower side of the flow path connecting plate 50,

The lower end of the flexible hydraulic hose (51, 51 ') is configured to be connected to the flow path (15, 15') of the expansion unit 10,

When the torsion between the lower expansion unit 10 due to the rotation of the drilling pipe 20 occurs, the flexible hydraulic hose (51) (51 ') to counteract this to correspond to the twist angle, so that of the drilling pipe (20) The fluid induction pipe 14, 14 'in the extension 30 that is slid from the inside can overcome the problems such as twisting or breaking.

In addition, the cylinder grooves 12 and 12 ′ are respectively coupled to the cylinders 16 protruding to one side of the expansion unit 10, respectively, and the auxiliary drilling edge 11 at the end of the cylinder 16. And a piston shaft 18 having an oscillation shaft 17 having an inner side of the oscillation shaft 17, which is engaged with the expansion unit 10 in the inner flow groove 17a of the oscillation shaft 17 and inserted into the oscillation shaft 17. ),

The piston 19 is coupled to the end of the piston shaft 18 in contact with the inside of the shaft shaft 17, the inside of the piston shaft 18, the end of the piston is exposed to both sides of the piston 19, respectively The flow paths 19a and 19b are formed, and the other ends of the inflow paths 19a and 19b are connected to the flow paths 15 and 15 ', respectively.

In addition, in order to prevent the expansion and extraction of the auxiliary drilling blade is inserted by itself by the external force, the front end of the expansion unit 10 is formed with a horizontal valve groove (40, 40 '), the valve groove 40 40 ') is coupled to the double pilot check valve 41, 41',

The double pilot check valves 41 and 41 ′ connect the flow paths 15 and 15 ′ in the expansion unit 10 and the outgoing flow paths 19 a and 19 b in the piston shaft 18. Each of the flow paths is opened and closed by the check valves 41 and 41 'to prevent the smooth appearance of the auxiliary drilling blades 11 and 11' as well as insertion by external force in the expanded state.

When described in more detail by the accompanying drawings the action of the extended drilling screw having the present invention hydraulic expansion auxiliary drilling blades as described above as follows.

As shown in the drawing, the extended drilling screw of the present invention is for carrying out a deeper drilling work and uses a fastener 31 formed at the front end of the extension 30 to be inserted from the front end of the drilling pipe 20 to a general auger crane. All you have to do is install it.

In addition, the lower end of the drilling pipe 20 is fastened to the expansion unit 10 having a submersible auxiliary drilling blades (11) (11 '), the excavated soil by the rotation of the drilling pipe (20) The spiral screw 21 for discharging is continuously formed in the whole of the above-mentioned drilling pipe 20 and the expansion unit 10. As shown in FIG.

Such a drilling screw is to be made so that the auxiliary drilling blade (11, 11 ') is released by the pressure of the fluid supplied from the auger crane,

The extension 30 has a vertically penetrating parallel to the entrance and exit lines 32, 32 'spaced along the longitudinal direction, the fastener 31 for delivering the fluid supplied from the auger crane Since the fluid hose 33 is installed, when the fluid hose 33 and the inlet and outlet lines 32 and 32 'are connected to each other, the direction of the fluid moving along the inlet and outlet lines 32 and 32' is changed. It can be controlled by a pump.

In addition, the upper portion of the expansion unit 10 is a fluid induction pipe 14, 14 'is inserted into the inside of the inlet and outlet lines 32, 32' is formed vertically, the extension 30 extends or contracts upward and downward from the excavation pipe 20 to serve to control the length, and the fluid guide pipes 14 and 14 described above as shown in FIGS. ') Is inserted into the entry and exit lines 32 and 32', even though the extension 30 is drawn out of the drilling pipe 20 and maintained in the extended state, the fluid guide pipe 14 and 14 ' Is continuously positioned in the entry and exit lines 32 and 32 ', so that the inflow and discharge of the fluid can be continued.

In addition, the expansion unit 10 has a flow path 15 (15) for branching from the fluid guide pipes (14) (14 ') to operate the subsidiary drilling blades (11) (11'). ') Is formed, and since the flow paths 15 and 15' are formed separately from each other to immerse the auxiliary drilling blades 11 and 11 ', the auxiliary drillings having different heights and directions are formed. The blades 11 and 11 ′ move in and out while simultaneously acting on the fluid.

In addition, the expansion unit 10 is formed with cylinder grooves 12 and 12 'which are formed in opposite directions to different heights, and the expansion unit (10) is formed inside the cylinder grooves 12 and 12'. 10. A cylindrical cylinder 16 protruding outward is fixed in an inserted state, and inside the cylinder 16, an inlet shaft 17 having auxiliary drilling edges 11 and 11 'is inserted at an end thereof. Is located.

In particular, the inside of the flow groove (17a) formed horizontally in the inside of the projection shaft 17 is fixed to the piston shaft 18 protruding from the end of the cylinder grooves 12, 12 'is embedded, At the end of the piston shaft 18, a piston 19 is formed in close contact with the flow groove 17a, and inside the piston shaft 18, a projection channel 19a formed laterally along the longitudinal direction ( 19b) have different lengths.

At this time, the end of the exit channel 19a (19b) is exposed to both sides of the piston 19, respectively, when the fluid is discharged to the exit channel 19a of one side as shown in FIG. Since the fluid is filled in one side in the flow groove 17a divided by 19, the above-mentioned shedding shaft 17 protrudes due to the pressure, and the fluid on the other side of the fluid flows through the shedding flow passage 19b on the other side. To escape,

On the contrary, when the fluid is discharged through the other exiting channel 19b as shown in FIG. 8, the tapping shaft 17 is retracted by the pressure, and is discharged through the front tapping channel 19a. The fluid is drawn out.

As a result, the above-mentioned flow paths 19a and 19b are connected to the aforementioned flow paths 15 and 15 ', so that the fluid flows through the flow paths 15 and 15' and the entry and exit lines 32 and 32 '. By the action of being supplied or discharged, the above-mentioned shedding shaft 17 has an operating relationship in which it protrudes or expands and contracts.

Therefore, the auxiliary drilling blades (11, 11 ') can be easily extended or reduced remotely by using the pressure of the fluid, so that not only the general drilling but also the deep drilling of the drilling screw more rational and effective It can be used.

In this case, when expansion drilling is performed using the auxiliary drilling blade through the rotation of the drilling screw, the drilling pipe 20 and the extension 30 may be misaligned due to the twist between the lower expansion unit 10. Bar, between the extension 30 and the expansion unit 10 in the excavation pipe 20 that is adjustable in the vertical direction can be formed by the mutual rotation by the rotational force in the vertical axis direction such a twist occurs In this case, the metal fluid guide tubes 14 and 14 'are subjected to considerable loads and torsional stresses, so in severe cases, the fluid guide tubes 14 and 14' may be twisted or broken, which may cause failure. .

In particular, in the case where the extension 30 in the drilling pipe 20 is elevated in the twisted state as described above, severe damage and deformation at the lower end of the fluid guide pipes 14 and 14 'in the twisted state. This may result in leakage of fluid or breakage of the fluid induction pipe 14, 14 ′.

Accordingly, in the present invention, a separate flow path connecting plate 50 is fixedly mounted on the inner bottom of the excavation pipe 20, and the fluid guide pipes 14 and 14 ′ are formed on the flow path connecting plate 50. By fixing the lower end of the extension, so that the extension 30 in the drilling pipe 20 is elevated from the upper side of the flow path connecting plate 50,

A lower end of the flexible hydraulic hose 51, 51 'is coupled to the lower end of the flow path connecting plate 50, and the lower end of the flexible hydraulic hose 51, 51' is in the expansion unit 10. By connecting the flow paths 15 and 15 ', the torsion generated between the expansion unit 10, the upper drilling pipe 20, and the inner extension 30 thereof during rotational excavation may be caused by the flexible hydraulic hose ( 51) 51 'is reasonably absorbed and canceled. The flexible hydraulic hose 51, 51' is made of a relatively soft elastic material, so that even if a certain amount of twist occurs, induction supply of fluid It does not interfere at all, and it is possible to fundamentally eliminate the above problems.

Moreover, the flow path connecting plate 50 is directly fixed to the inside of the excavation pipe 20, and thus rotates together with the excavation pipe 20 regardless of the torsion during rotational excavation. (14 ') has no torsion at all, allowing for long-term and stable use.

Such an extended drilling screw having a hydraulic expansion auxiliary drilling blade of the present invention is a method of continuously supplying fluid to maintain the protruding state when the auxiliary drilling blades 11, 11 'are protruded by hydraulic pressure. However, such a method is generally applied to the control technology of the fluid through a separate check valve because a considerable crowd of fluid delivery system and pressure and impact load is applied during the excavation.

That is, as shown in Fig. 9, a horizontal valve groove 40, 40 'is formed at the tip of the expansion unit 10, and a double pilot check valve is formed inside the valve grooves 40, 40'. (41) (41 '), wherein the double pilot check valve (41) (41') is a flow path (15) (15 ') and the piston shaft (18) connected to the inlet and outlet lines (32) and (32'). As the role of connecting the appearance and flow path 19a (19b) within each other,

When fluid is supplied from the inlet / outlet line 32 on one side, the corresponding amount of fluid is discharged through the inlet / outlet line 32 'on the other side, and when the supply of the fluid is finished, the double pilot check valve 41 (41') The auxiliary excavation blades 11 and 11 'in the protruding state by the supply of the fluid are reversed even if an external force is generated, because the flow path opened by the original function blocks the flow of the fluid under pressure. Insertion into the system is prevented.

On the contrary, when the fluid is supplied to the other entry and exit line 32 ', the other entry and exit line 32 is opened and the fluid is discharged. This state is a process in which the auxiliary drilling blade is retracted and inserted. Even in the terminated state, the auxiliary drilling blades 11 and 11 'do not protrude by themselves due to the flow path blocking action of the double pilot check valves 41 and 41'.

Therefore, since the auxiliary pilot blades wander only in accordance with the actual control state of the user by the double pilot check valves 41 and 41 ', it is very reasonable to prevent the malfunction of the corresponding main part.

Extensive drilling screw having a hydraulic expansion auxiliary drilling blade of the present invention as described above, in accordance with the variable state of the excavation length of the extended drilling screw, so that the hydraulic pressure is continuously applied to the auxiliary drilling blade of the lower expansion unit depth of the excavation work According to this can be reasonably used an extended type drilling screw having an auxiliary drilling blade operated by hydraulic pressure, as well as shorten the construction period, there is an effect to greatly improve the workability.

Claims (4)

An expansion unit 10 having auxiliary drilling edges 11 and 11 'is coupled to the lower end of the drilling pipe 20, and a spiral screw 21 is formed on the outer circumferential surface of the drilling pipe 20 and the expansion unit 10. Is formed, in the extended drilling screw having an extension 30 to be inserted and removed from the tip of the drilling tube 20 and the fastener 31 of the upper end of the extension 30, In the expansion unit 10, cylinder grooves 12 and 12 'of different heights are formed in the transverse direction, and auxiliary drilling blades 11 and 11' are formed inside the cylinder grooves 12 and 12 '. The inlet shaft 17 having a built-in, and the upper portion of the expansion unit 10 is divided into a vertical fluid guide tube 14, 14 ', the flow path 15 formed in the expansion unit 10 15 'allows fluid in the fluid guide pipes 14 and 14' to flow into and out of the cylinder grooves 12 and 12 ', The extension 30 forms a vertically penetrating entry and exit line 32 and 32 'into which the fluid guide pipes 14 and 14' are inserted, and the entry and exit lines 32 and 32 'are fastened. To the fluid hose 33 coupled to the sphere 31, The fluid induction pipes 14 and 14 'are slid inside the entry and exit lines 32 and 32' together with the extension 30 inserted into and out of the drilling pipe 20, and continuous fluid movement is achieved. According to claim 2, 11, 11 'and the drill shaft 17 having a hydraulic expansion auxiliary drilling blade, characterized in that configured to operate the extended drilling screw. The method of claim 1, In the lower part of the drilling pipe 20, a separate flow path connecting plate 50 is fixedly formed therein, and the fluid induction pipes 14 and 14 'are vertically connected to the upper side of the flow path connecting plate 50. In the lower side of the flow path connecting plate 50, the flexible hydraulic hoses 51, 51 'are connected to the fluid induction pipes 14, 14', The lower end of the flexible hydraulic hose (51) (51 ') is extended digging screw having a hydraulic expansion auxiliary drilling blade, characterized in that configured to be connected to the flow path (15, 15') of the expansion unit (10). . The method of claim 1, Inside the cylinder grooves 12 and 12 ′, the cylinders 16 protruding to one side of the expansion unit 10 are respectively coupled, and the inner and outer sides of the cylinder 16 have an auxiliary drilling blade 11 at their ends. The shaft 17 is inserted, and the piston shaft 18 which is engaged with the expansion unit 10 and inserted into the exit shaft 17 is located in the inner flow groove 17a of the projection shaft 17. , The piston 19 is coupled to the end of the piston shaft 18 in contact with the inside of the shaft shaft 17, the inside of the piston shaft 18, the end of the piston is exposed to both sides of the piston 19, respectively Flow passages 19a and 19b are formed, and the other end of the inflow passages 19a and 19b is extended with a hydraulic expansion auxiliary drilling blade, which is configured to be connected to the flow passages 15 and 15 ', respectively. Type excavation screw. The method of claim 3, wherein In the upper inner side of the expansion unit 10 to form a horizontal valve groove (40, 40 '), the valve grooves (40, 40') are coupled to the double pilot check valve 41, 41 ', The double pilot check valves 41 and 41 'separately connect the flow paths 15 and 15' in the expansion unit 10 and the outgoing flow paths 19a and 19b in the piston shaft 18 to expand the auxiliary drilling. An extended drilling screw having a hydraulically extended auxiliary drilling blade, characterized in that the blade (11) (11 ') is configured to be prevented from being inserted by itself by an external force.

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