KR20100056111A - Rod unit for direct-boring apparatus - Google Patents

Abstract

PURPOSE: A rod unit for a direct-boring device is provided to prevent air pollution occurred by scattered dust, and to improve workability and boring efficiency. CONSTITUTION: A rod unit(10) for a direct-boring device comprises a head member, a first connecting rod, a hammer unit(30), a second connecting rod, and a dust guide discharging unit. The head member is coupled to a motor(240) for supplying torque. The first connecting rod is formed to transfer torque from the head member and the motor. The hammer unit is installed in the end of the first connecting rod. The second connecting rod connects the head member and the hammer unit, and covers the first connecting rod. The dust guide discharging unit discharges dust occurred when drilling.

Description

Rod unit for direct drilling of drill machine {rod unit for direct-boring apparatus}

The present invention relates to a perforator, and more particularly, to a perforation rod of a perforator used in the perforation grouting method in which a steel pipe is inserted at the same time as perforation.

In general, the steel pipe grouting method is an underground excavation auxiliary method that improves the order while reinforcing the ground. The steel pipe is installed on the ground, and the packer is installed inside the steel pipe to inject grout material to inject the grout into the ground. It is to integrate the ground and increase the shear strength of soil and rock.

This method is very advantageous in terms of constructability and economics. The steel pipe grouting method has been widely used as a part of the tunnel reinforcing method in recognition of its effect.

Steel pipe grouting method as described above comprises the steps of drilling the ground, inserting the steel pipe with a strainer is installed in the drilling hole, injecting a sealing material between the steel pipe and the drilling hole, and injecting cement while installing the packer do. Since this method proceeds to insert the steel pipe after drilling, in the soft soil ground where the drilling hole is not naturally maintained, it is difficult to insert the steel pipe due to the collapse of the drilling hole or the mixing of foreign substances, thereby reducing its applicability.

In order to improve the above problems, a direct drilling apparatus is developed which enables the steel pipe insertion and the ground drilling at the same time, and the direct drilling apparatus is disclosed in Korean Patent Registration No. 166423 and Utility Model Registration No. 300881. Korean Patent No. 0467537 discloses a bit-separable direct-hole steel pipe grouting device and a direct-hole steel pipe grouting method using the same, and a registered utility model No. 0425452 discloses a direct-hole bit device.

The direct drilling device of the Patent No. 166423 has a female thread processing on the inner circumferential surface of the distal end of the steel pipe equipped with the strainer and is screwed with the punched bit machined on the outer circumferential surface thereof. Can be. In addition, it can be seen that the direct drilling device of the Utility Model No. 300881 has a configuration in which a steel pipe and a drilling bit are screwed together and a power transmission rod is integrally coupled.

This jikcheon factory has a problem in that severe dust is generated in the process of drilling by the bit installed at the end of the steel pipe or the rod therein to pollute the surrounding environment. In particular, the air is supplied at high pressure during the drilling process, and dust generated during the drilling is severely polluted with the surrounding environment, resulting in relatively poor workability. have.

The present invention is to solve the problems as described above, to reduce the contamination of the work environment due to the generation of dust during direct drilling work, and to provide a direct drilling rod unit of the perforator that can improve the workability There is a purpose.

Still another object of the present invention is to provide a direct drilling rod unit for a perforator that can fundamentally prevent generation of dust during operation, thereby increasing the product value of the product.

Direct drilling unit of the present invention for achieving the above object

A head member connected to a motor for rotation, a hammer unit installed at an end of a first connection rod for transmitting a driving force from the head member and a driving means, and connecting the head member and the hammer unit to the first connection. And a second connecting rod surrounding the rod and an exterior in which the second connecting rod supported by the head member is inserted. Characterized in that it is provided with a dust-induced discharge means for preventing contamination.

In the present invention, the dust induction discharge means is provided in the air supply unit for supplying high-pressure air to the end of the bit through the first connecting rod and the bit, the head member and the first connecting rod and the second connecting rod is installed in the water Water supply unit for supplying between the second connecting rod adjacent to the bit and the exterior, and sludge discharged between the second connecting rod and the exterior installed on the side adjacent to the head member, that is, water, air and dust mixed And a discharge part for discharging the sludge.

The water supply unit is provided with a rotary joint on the head member, and between the outer circumferential surface of the first connecting rod and the inner circumferential surface of the second connecting rod to supply water supplied through the rotary joint to a side adjacent to the bit. A water supply passage is formed, and the discharge hole for discharging water is formed between the outer circumferential surface of the second connection rod and the outer surface of the second connection rod.

The direct drilling rod unit of the punching machine according to the present invention can prevent the dust generated during the drilling to be scattered to the surroundings, such as air, to contaminate the surrounding environment, and further it is possible to improve the drilling efficiency.

The direct drilling rod unit of the perforator according to the present invention is a steel pipe grouting method for the underground excavation to improve the water repellency while reinforcing the ground, it is shown in Figures 1 to 4.

Referring to the drawings, the rod unit 10 for direct drilling of an electric machine is installed in a vehicle body 200 having an endless track, and is installed in a pair of booms 210 and 220 rotatably installed on both sides. It is installed on the arm 230.

The direct boring rod unit 10 is installed on the arm 230, the head member 11 is coupled to the motor 240 which is a driving means for providing rotational force, and from the head member 11 and the motor 240 Hammer unit 30 is installed at the end of the first connecting rod 20 for transmitting the rotational force, connecting the head member 11 and the hammer unit 30, and wraps the first connecting rod 20 A second connecting rod 40 is provided.

The head member 11 has an appearance 100 into which the second connection rod 40 is inserted, and the first and second connection rods 20 and 40 and the appearance 100 and the head member 11. It is provided with a dust induction discharge means 50 to induce and discharge dust generated during drilling to prevent contamination of ambient air.

If described in more detail for each direct drilling rod unit of the punching machine according to the present invention configured as described above as follows.

The head member 11 is connected to the motor 240 which is a driving means for rotation, the tab is formed on the coupling portion.

The first and second connection rods 20 and 40 may be formed by connecting the first and second unit rods 21 and 41 to each other, and the second unit rods forming the second connection rod 20 ( Some of the portions 41 may have an inner circumferential surface in contact with an outer circumferential surface of the first connecting rod 20. The inner diameter of the two unit rod 41 is formed to be relatively larger than the outer diameter of the first unit rod 21 constituting the first connecting rod 20. Here, it is preferable to improve the bearing capacity of the second connecting rod with respect to the first connecting rod by forming a spline in contact with the outer circumferential surface of the first unit rod 21 on the inner surface of the second unit rod, but is not limited thereto. Any structure may be formed as long as a flow path is formed between the outer circumferential surface of the second connecting rod 40 on the outer circumferential surface of the first connecting rod 20 and the supporting force of the first and second connecting rods 20 and 30 can be improved. .

The hammer unit 30 is installed at the ends of the first and second connection rods 20 and 40 and may be driven by pneumatic pressure supplied to the second connection rod, but is not limited thereto. The hammer unit 30 may be a known hammer unit. The end of the hammer unit 30 is provided with a bit 31 for drilling, and the bit 31 is formed with a plurality of bit passages 32 communicating with an air discharge passage, which will be described later. At the end of the can be formed a plurality of tips for drilling. The bit 31 is not limited to the above-described embodiment, and may have various shapes depending on the size of the hole to be drilled and the ground.

The dust induction discharge means 60 is to discharge dust in the form of a slurry by piggybacking the dust generated during the drilling by the bit 30 to air and water to prevent the dust from spreading around, the first connecting rod ( 20 and the air supply unit 60 for supplying high pressure air to the end of the bit through the hammer unit 30, the head member 11, the first connecting rod 20 and the second connecting rod (30) Installed in the water supply portion 70 and the side adjacent to the head member 11 for supplying the water between the second connecting rod 40 adjacent to the bit and the appearance 100 and the second connecting rod ( 40) and the discharge portion 80 for discharging the sludge discharged between the appearance, the sludge mixed with water, air and dust.

The air supply unit 60 drives the hammer unit 30 and drives the first hollow 61 formed in the longitudinal direction of the first connecting rod 20, the hammer unit 30, and the bit 31. It is provided with an air discharge passage 62 made of a bit hollow 32 so as to be discharged through, and includes a compressor (not shown) for supplying air to the air discharge passage (62). The air discharge passage 62 may extend through a drive shaft of a separate motor, and the high pressure air generated by the compressor may be supplied by a rotary joint installed at an end of the drive shaft.

The water supply unit 70 is provided with a rotary joint 71 in the head member 11, the first supply to supply the water supplied through the rotary joint 71 to the side adjacent to the bit 31 A water supply passage 75 is formed between the outer circumferential surface of the connecting rod 20 and the inner circumferential surface of the second connecting rod 40, and the outer circumferential surface and the appearance 100 of the second connecting rod 40 are adjacent to the water supply passage 75. ), A discharge hole 76 for discharging water is formed.

The rotary joint 71 has a flow path in the circumferential direction between the first housing 72 rotatably installed on the head member 11 and the inner circumferential surface of the first housing 72 and the outer circumferential surface of the head member 11. Sealing members 73 and 73 are installed between the inner circumferential surface of both end portions of the first housing 72 and the inner circumferential surface of the head member 11 to be formed. A plurality of the sealing members 73 may be installed to maintain mutual airtightness, and a bearing may be installed to smoothly rotate the head member 11 with respect to the first housing 72. The water supply hole 72a is connected to the first housing 72 corresponding to the flow path 74 in the circumferential direction by the first housing 72 and the head member 11 by a pump and a water supply pipe for supplying water. Is formed. Here, the flow passage 11 is connected to the water supply passage 75 so that water supplied through the water supply hole 72a may be discharged through the water supply passage 75 and the discharge hole 76. Do. To this end, the end of the first connecting rod 20 may be penetrated and coupled to the head member 11, and a groove 11a may be provided at the head member 11 corresponding to the first connecting rod 20. ) Is formed, and a water passage 11b is formed between the groove 11a and the flow path 74.

The discharge unit 80 discharges a mixture of dust generated during drilling in the air and the air supplied through the air supply unit 60 and the water and the bit supplied through the water supply unit 70, that is, sludge, one end Is supported by the first housing 72, the other end is supported by the exterior 100, and a bush member 82 having a plurality of discharge holes 81 formed on an outer circumferential surface thereof, and rotated by the bush member 81. It is provided with a second housing (83) which is installed to be possible and forms a discharge passage surrounding the discharge hole (81). The space between the bush member 82 and the outer circumferential surface of the second connecting rod 40 is connected to the sludge discharge passage 85 formed between the outer circumferential surface of the second connecting rod 40 and the inner circumferential surface of the exterior 100. .

Referring to the operation of the direct hole rod unit of the electric machine according to the present invention configured as described above are as follows.

In order to drill the ground using the boring machine equipped with the direct drilling rod unit, the vehicle body 200 is moved to the boring position, and then the boring machine is set to the boring position using the booms 210 and 220.

In this state, the bit 31 is vibrated and rotated using the motor 240 which is the driving means connected by the head member 11 and the rod to perform the drilling operation. In this process, the high pressure air is supplied to the air discharge passage 62 using the air supply unit 60 of the dust induction discharge means 50 to drive the hammer unit 30, and then through the bit hollow 32. To be discharged. In addition, water is supplied to the water supply hole 72a of the rotary joint 71 installed in the head member 11 by using a pump. As such, the water supplied through the rotary joint 71 is provided with the water supply passage 75 and the discharge hole 76 on the outer circumferential surface of the flow path 74 and the first connecting rod 20 and the inner circumferential surface of the second connecting rod 40. Through the discharge hole 76 adjacent to the bit (31).

Therefore, the air discharged through the air discharge passage 62 and the bit 31 is mixed with the water discharged through the discharge hole 76 while flowing into the sludge discharge passage 85, such as dust generated during drilling, and sludge. It becomes mad.

As such, the sludge mixed with water, air, and dust is moved to the head member 11 through the sludge discharge passage 85 and then discharged through the discharge unit 80. That is, the sludge supplied to the sludge discharge passage 85 is discharged through the discharge hole 81 of the bush member 82, and the discharged sludge is provided in the second housing 83 rotatably installed in the member member 81. It is discharged through the formed through holes (83a).

As the above-mentioned drilling machine direct drilling rod unit operated as described above can be discharged to the outside by sludgeizing dust generated during the drilling operation, such as water, the dust generated during drilling is scattered to the outside to contaminate the surrounding environment. It can be prevented fundamentally.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

The present invention is widely applicable to a perforator for drilling works for civil engineering works such as tunnels, foundations, cutouts, and the like.

1 is a side view of a sloth of the perforator according to the present invention,

Figure 2 is an exploded perspective view of the rod unit for direct drilling of the perforator according to the present invention,

3 is a cross-sectional view of the direct drilling rod unit of the punching machine according to the present invention;

4 is a cross-sectional view showing the discharge portion.

Claims (4)

 A head member connected to a motor for rotation, a hammer unit installed at an end of a first connection rod for transmitting a driving force from the head member and a driving means, and connecting the head member and the hammer unit to the first connection. And a second connecting rod surrounding the rod and an exterior in which the second connecting rod supported by the head member is inserted. Boring machine direct drilling rod unit characterized in that it is provided with a dust-induced discharge means for preventing contamination. The method of claim 1, An air supply unit configured to discharge the dust induced discharge means to the end of the bat through the first connecting rod and the hammer unit, and a second unit installed in the head member, the first connecting rod, and the second connecting rod and adjacent to the bit; And a water supply part for supplying between the connection rod and the exterior, and a discharge part installed at a side adjacent to the head member to discharge the sludge mixed with water, air, and dust between the second connection rod and the exterior. Perforator rod unit. 3. The method of claim 2, The water supply unit is provided with a rotary joint on the head member, and between the outer peripheral surface of the first connecting rod and the inner peripheral surface of the second connecting rod to supply water supplied through the rotary joint to the side adjacent to the bit. And a water supply passage to be formed, and a discharge hole for discharging water between the outer circumferential surface of the second connecting rod and the outer surface of the second connection rod is formed on the side adjacent to the bit. 3. The method of claim 2, The discharge part discharges a mixture, that is, sludge mixed with air generated through the air supply and water supplied through the water supply part and the bit, that is, sludge, one end of which is supported by the first housing. The other end portion is supported by the exterior and the bush member having a plurality of discharge holes formed on the outer peripheral surface, and the second housing for rotatably installed in the bushing member to form a discharge passage surrounding the discharge hole Common load unit.

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