KR100317540B1 - Device for driving hammers of a drilling tool by using a crane - Google Patents

Abstract

The present invention relates to a hammer driving device of a perforator using a crane, the hydraulic drive unit (10) which is lifted up and down by the guide of the leader (2) standing vertically from the ground by the crane (1);

A drive rod 20 for transferring hydraulic pressure and air generated by the hydraulic drive unit 10 to the position of the excavating work portion along each passage;

A tool unit 30 for receiving several hammers 32 in the holder 31 connected to the end of the drive rod 20 and having bits 33 striking by the hammers 32; ;

In the case consisting of a case (40) inserted to form a passage from the ground to the working position excavated by the tool unit (30);

The holder unit 31 and the bit 33 of the tool unit 30 are configured to rotate and revolve by the hydraulic drive unit 10 and the bit driving means 50, respectively. In addition to rotating itself, the crushing efficiency is increased by revolving each bit 33 by the bit driving means 50, so that the entire work construction period can be shortened.

In addition, as the result of breaking the pressure wall or the earth wall as each bit 33 rotates, the contact surface is uniform, thereby extending the life of the tool, and the drilling operation is performed without the occurrence of a large impact or vibration. It is a very useful invention such as preventing damage to buildings or structures.

Description

Device for driving hammers of a drilling tool by using a crane}

The present invention relates to a hammer driving device of a drilling machine using a crane, and more particularly, to increase the drilling efficiency and to shorten the construction period and to reduce the consumption of energy, thereby inventing economic benefits.

In general, the perforator for drilling the ground is divided into a method of simply rotating the bit (aka oscillator operation) and a method of rotating the ball cutter and applying a pressing force simultaneously (aka R.C.D work).

Oscillator working method is a method of drilling and swinging by the forward and backward operation of a cylinder installed in the left-right rotation direction while the casing having a diameter of 800-3000mm is bitten by a hydraulic chuck.

In addition, the R.C.D working method is a method of drilling by rotating the ball cutter with a drive while the cylinder is pressurized in the vertical direction with the ball cutter mounted at the end.

As described above, the oscillator working method has no problem in drilling when the land condition of the workplace is composed of soil only. However, when the rock appears in the ground, the case does not pass through the arm. It must be accompanied by a process of dropping and destroying a large hammer by the equipment.

In addition, there is a problem that it takes a lot of cumbersome construction time, such as replacement of the work tool into the case after the rock is broken.

In addition, noise and impact generated when hitting a hammer by a cruiser may cause damage to nearby buildings and structures.

On the other hand, the RCD method has a significantly more advanced punching effect than the oscillator method, but the bit is fixed without rotating, with the bit attached to several hammers in the large holder. It is designed to rotate.

Therefore, the part where the bit is in contact with the rock or soil is always in contact with only the outermost part, so intensive wear occurs at the contact part. Therefore, the bit must be replaced with a new tool despite the short time of use. There are disadvantages such as frequent breakage.

Then, the compressed air is used as the driving power, and the air consumption is enormous compared to the driving efficiency.

It is an object of the present invention to provide a hammer driving device of a perforator, which can provide economic benefits by reducing the work construction period and operating costs, in particular, the high crushing efficiency of the rock.

Another object of the present invention is to provide a hammer driving device of a perforator which can extend the life of the tool to improve the reliability and marketability.

1 is a front view showing a drilling device in which the present invention is working with the crane mounted

Figure 2 is an enlarged cross-sectional view showing a part of the tool unit of the present invention

3 is a plan view showing a power transmission system of a tool unit;

Figure 4 is an enlarged cross-sectional view showing a structure in which the bit is rotated and the vertical vibration movement by the hammer by the bit driving means

Explanation of symbols for the main parts of the drawings

1-Crane 2-Leader

10-Hydraulic Drive Unit 20-Drive Rod

30-tool unit 31-holder

32-Hammer 33-Beat

40-Case 50-Bit Drive

51-Hydraulic Motor 52-Chain

53-Sprockets 54-Spline Gears

The object of the present invention is a hydraulic drive unit (10) which is lifted up and down by the guide of the leader (2) standing vertically from the ground by the crane (1);

A drive rod 20 for transferring hydraulic pressure and air generated by the hydraulic drive unit 10 to the position of the excavating work portion along each passage;

A tool unit 30 for receiving several hammers 32 in the holder 31 connected to the end of the drive rod 20 and having bits 33 striking by the hammers 32; ;

In the case consisting of a case (40) inserted to form a passage from the ground to the working position excavated by the tool unit (30);

The holder 31 and the bit 33 of the tool unit 30 are achieved by means of the hydraulic drive unit 10 and the bit driving means 50 respectively configured to rotate and revolve.

Therefore, since the tool unit 30 itself is rotated and each bit 33 is rotated as if it is rotating and revolving, the rock crushing efficiency of the rock is increased, thereby shortening the construction period and surrounding buildings due to vibration. Can prevent damage in advance.

In addition, since the bit 33 rotates itself, the wear part is uniform, so that the life of the tool is extended, and hydraulic pressure is used as the power, thereby reducing the operating cost and providing economic benefits.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a process in which the drilling operation of the present invention is mounted vertically to the ground in the state mounted on the crane 1 as a whole apparatus.

FIG. 2 is an enlarged cross-sectional view of the tool unit 30 according to the present invention, in which a state in which power is transmitted by the bit driving means 50 is partially cut, and FIG. 3 schematically illustrates the power transmission system of the bit 33 in a plan view. It is shown.

FIG. 4 is an enlarged cross-sectional view of the structure in which the bit 33 is installed by the bit driving means 50 so that the rotation of the bit 33 and the vertical vibration movement by the hammer 32 are simultaneously performed.

In the present invention, as shown in Figure 1 by the crane (1) by the leader (2) perpendicular to the ground from the ground in the state of the tool unit 30 in the ground and the punching operation is made.

The vertically mounted leader 2 guides the drive unit 10 to move up and down according to the progress of the work of the tool unit 30 by the guide of the guider (not shown), and the tool unit 30 and the hydraulic drive unit 10. The drive rod 20 is connected between them.

The drive rod 20 is a transmission member that transmits the air pressure generated from the hydraulic pressure or other power pack generated by the hydraulic drive unit 10 to the tool unit 30, and a hydraulic passage and an air passage not shown therein, respectively. Disposal passages for discharging soil generated by excavation work are formed long in the axial direction, respectively.

And, it is configured to connect a plurality of flanges in unit length so as to extend the length according to the length of the drilling operation.

The tool unit 30 is provided with hammers 32 and bits 33 in a cylindrical holder 31 connected to an end of the drive rod 20 to rotate in direct contact with a rock or soil. It is a shredding tool for shredding.

In addition, a hollow cylindrical case 40 is inserted from the ground to the position where the tool unit 30 is drilled to prevent soil from collapsing at the intermediate position of the punched bar, and to facilitate the topdressing work. This is the same as in the prior art.

The most important feature of the present invention is that the tool unit 30 rotates on its own and at the same time, each of the bits 33 rotates and rotates separately, thereby increasing the crushing effect. .

That is, the tool unit 30 is itself rotated through the drive rod 20 (hereinafter referred to as rotating) by the rotation of the hydraulic drive unit 10 of the uppermost connected to the drive rod 20.

In addition, the bit 33 exposed at the end of the hollow holder 31 which performs the body function of the tool unit 30 has the bit 33 by the bit driving means 50 irrespective of the holder 31. Self-rotating (hereinafter referred to as idle).

As shown in Figs. 2 to 4, the bit driving means 50 is provided with several hammers 32 standing up in the hollow holder 31 in the axial direction, and at each end of the hammer 32 a bit ( 33) are located.

The hammer 32 generates the vertical vibration force by the power of hydraulic pressure, and transmits the vertical vibration force to the bits 33 installed in the axial direction.

The bits 33 are gear-coupled to the sprockets 53 which are rotatable from the holder 31 by the bearings 56 and the male and female spline gears 54.

Therefore, the sprocket 53 is coupled to the spline gear 54 when the sprocket 53 is driven by the chain 52 which vertically vibrates in the axial direction by the vibration force of the hammer 32 and transmits the rotational force of the hydraulic motor 51. The bit 33 can be self-rotating (idle).

The hydraulic motor 51 for driving the bits 33 is chain-coupled so as to be rotated simultaneously with the respective bits 33 by the chain 52 as shown in FIG. Tension sprockets 55 are preferably installed.

At this time, since the bit 33 located in the center does not need to be rotated because it is not in contact with an external rock surface or soil wall, it is also possible to design such that rotation force transmission for idle is not achieved as shown in FIG. 3.

On the other hand, the rotation direction of the tool unit 30 itself and the rotational direction of the bit 33 are preferably set in the power rotation direction so as to be driven in reverse with each other, it is advantageous to the fracture drilling effect with the pressure wall or soil wall.

According to the present invention as described above, while rotating the tool unit 30 itself via the drive rod 20 by the hydraulic drive unit 10 as described above, each bit 33 by the bit driving means 50 Since the crushing efficiency is increased by idle, the whole work construction period can be shortened.

In addition, as a result of breaking the pressure wall or the earth wall as each bit 33 rotates, its contact surface is uniform, thereby extending the life of the tool.

In addition, since the drilling operation is made without the occurrence of a large impact or vibration, it is a very useful invention, such as easy operation and preventing the damage of surrounding buildings or structures in advance.

Claims (3)

A hydraulic drive unit 10 which is lifted up and down by the guide of the leader 2 which is erected vertically from the ground by the crane 1; A drive rod 20 for transferring hydraulic pressure and air generated by the hydraulic drive unit 10 to the position of the excavating work portion along each passage; A tool unit 30 for receiving several hammers 32 in the holder 31 connected to the end of the drive rod 20 and having bits 33 striking by the hammers 32; ; In the case consisting of a case (40) inserted to form a passage from the ground to the working position excavated by the tool unit (30); The holder 31 and the bit 33 of the tool unit 30 are respectively configured to be rotated and revolved by the hydraulic drive unit 10 and the bit driving means 50, respectively. Hammer drive device of perforator. The sprocket (10) according to claim 1, wherein the bit driving means (50) is freely rotatable from the holder (31) by a bearing (56) at each end of the hammer (32) provided in the hollow holder (31) in axial direction. 53 and the bit 33 to the spline gear 54 of the male and female structures, and the bit 33 is configured to revolve itself by a chain 52 for transmitting the rotational force of the hydraulic motor 51 Hammer driving device of the drilling machine using a crane. The hammer driving device according to claim 1, wherein the tool unit (30) drives its own direction of rotation and the direction of rotation of the bit (33) in reverse direction.