KR20120004795A - Rock drilling unit with auto rod change - Google Patents

Abstract

PURPOSE: A lock drill device with an auto rod changer is provided to reduce working hour and improve work convenience by actively coping with changes in drilling depth when drilling a bore hole. CONSTITUTION: A lock drill device comprises a rock drill assembly(26) and a rod change assembly(14). The rock drill assembly comprises a rock drill body(10), a shank(11) for coupling with a rod, a shank diving motor(12) for rotating the shank, and a drifter(13) for moving the shank back and forth when changing a rod. The rock drill assembly drills a bore hole using a rod. The rod change assembly is formed on one side of the rock drill body and equipped with a plurality of rods to be automatically supplied one by one to the rock drill assembly according to drilling depth.

Description

Rock drilling unit with auto rod change

The present invention relates to a rock drill device, and more particularly, to a rock drill device having an automatic rod change that can automatically replace the rod used when drilling the rock section for blasting construction.

In general, the blasting method is one of the most widely used as a method for excavating work objects in civil engineering, construction sites and mines.

The blasting method has been recognized for its excellence in construction, such as shorter construction period for rock fracture and cutting and minimizing construction cost than other construction methods.

As an example of the blasting method, when constructing the foundation pile for civil engineering construction, when there is a very hard rock such as hard rock or hard rock in the bottom of the soil layer, most existing excavators do not properly excavate to the design depth As a result, the construction time is often far exceeded, or the construction is often impossible.

Therefore, when the construction is carried out under such ground conditions, a lot of incidental losses occur due to work delays such as wear of expensive equipment and increase of maintenance cost, and enormous expenses such as design change due to impossibility of construction are required. Most blasting methods are used to blast rocks by explosives.

Commonly applied methods for blasting include Smooth Blasting, Pre-Splitting, Line Drilling, etc. In order to drill the blast hole effectively in the rock section, it is usually a rock drill device Is mainly used.

This blasting method is provided with a rod for drilling blasting holes in the rock drill device, the tip of the rod is provided with a bit such as carbide tips, perforating the blasting hole through the rotation of the rod, and in one of the blasting holes It is a method to remove the rock layer by blasting and filling the gunpowder unit made by laminating the gunpowder.

In the conventional drilling operation using the rock drill device, the work is performed by replacing the rod according to the depth to be drilled by using a single rod having a length of drilling depth. There were disadvantages in terms of workability and workability, such as causing inconvenience, location limitations due to rod storage, and worker safety problems.

Accordingly, the present invention has been devised in view of the above, and provided with an auto rod change having a plurality of rods of different lengths on one side of the rock drill body, and automatically replaces the rod according to the drilling depth of the rock section. And by implementing a new type of blasting hole drilling method that can perform the drilling work while assembling, it is possible to actively cope with the change of the drilling depth during the construction of the blasting hole, thereby reducing work time and convenience The purpose is to provide a rock drill device that can improve the efficiency of the overall blasting construction.

In order to achieve the above object, the rock drill apparatus provided by the present invention includes a rock drill body, a shanker for coupling with a rod, a shanker driving motor for rotating the shanker, and a drifter for moving the shanker forward and backward when the rod is replaced. And a rock drill assembly for drilling blast holes using rods, and provided side by side of the rock drill body, and having a plurality of rods to automatically load rods to the rock drill assembly side according to the drilling depth. It consists of a structure including a load change assembly for supplying one by one.

Therefore, the rock drill apparatus has a feature that can perform the drilling operation while automatically replacing and / or connecting the rod in accordance with the drilling depth of the rock section.

Here, the rod change assembly is supported side by side on one side of the lock drill body, the rod housing is mounted in a plurality of rods, arranged side by side along the central axis of the rod housing circumferentially using a plurality of rods using a rod guide A rod shaft arranged at regular intervals along the shaft, a shaft driving motor connected to one end of the rod shaft to rotate the entire rod shaft including the rod, and installed in the rock drill body and clamping the rod by using two cylinders. It is preferable to form a rod clamp and the like to move the rod toward the lock drill body assembly side while rotating.

In addition, in the case of the rod provided in the rod change assembly, at least one rod of the plurality of rods adopts a form in which a bit is fastened at one end and a nut is formed at the other end, and the other rods are formed at the same time. It is preferable to adopt the form of the bolt portion formed on the other end, so that the rods can be connected and assembled with each other as necessary according to the drilling depth.

The rock drill apparatus provided with the auto rod change provided in the present invention has the following advantages.

First, since a plurality of rods are provided on one side of the rock drill body, the drilling operation can be performed while replacing or assembling the rods automatically according to the drilling depth. Therefore, the work time can be shortened during the construction of the blasting hole and the convenience of workability. Can increase.

Second, since the blast holes can be drilled by automatically assembling several rods according to the drilling depth of the rock section, it is possible to flexibly cope with the change of the drilling depth and perform the drilling work more efficiently.

Third, since several rods used for drilling operations of various depths are stored on one side and automatically removed and used, there are advantages of operation in terms of storage and handling of rods.

Fourth, by providing the sensor to guide the rod accurately to the clamp position, there is an advantage that can secure the installation, such as to prevent the collision between the rod and the surrounding structure.

1 to 4 is a perspective view showing a rock drill device according to an embodiment of the present invention
5 is a perspective view showing the rod housing of the load change assembly in the rock drill apparatus according to an embodiment of the present invention
Figure 6 is a perspective view showing a rod clamp of the rod change assembly in the rock drill apparatus according to an embodiment of the present invention
7 is a cross-sectional view taken along the line AA in FIG.
8 is a cross-sectional view taken along the line BB in FIG.
9 is a cross-sectional view taken along line CC of FIG. 4.
10 is a hydraulic circuit diagram of a rock drill apparatus according to an embodiment of the present invention.
11A, 11B, 11C, 11D, and 11E are schematic views showing a process of automatically supplying a rod in a rock drill apparatus according to an embodiment of the present invention.

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

1 to 4 are perspective views showing a lock drill apparatus having an auto rod change according to an embodiment of the present invention.

As shown in Figures 1 to 4, the rock drill device has a structure capable of actively coping with a change in the drilling depth by automatically connecting a plurality of rods according to the drilling depth, and substantially drilled by using the rod The lock drill assembly 26 capable of carrying out the work and the rod change assembly 14 for storing a plurality of rods and providing them to the lock drill assembly 26 side one by one.

The lock drill assembly 26 is provided with a lock drill body 10 for drilling a blast hole by moving a rod, and the lock drill body 10 includes a support structure 27 and an attachment 28 provided at one side thereof. It is installed in a structure that is supported on the arm 29 side of the drilling rig (not shown).

The lock drill body 10 of the rock drill assembly 26 is supported by a hinge structure in the middle of its length on the attachment 28 side, and is thus connected between the lock drill assembly 26 and the attachment 28. By the operation of the tilting cylinder 31 it is possible to perform a punching operation while taking various postures.

As a result, the tilting structure of the rock drill body 10 can secure a wide working radius and provide an advantage of efficiently performing the blast hole drilling operation according to the workplace conditions.

And, the support shaft 30 is mounted on the lower end of the rock drill body 10, the support shaft 30 at this time is fixed in contact with the ground during the drilling operation to support the rock drill body (10) do.

In particular, the upper end of the lock drill body 10 is provided with a shanker 11 as a means for coupling with the rod provided from the rod change assembly 14 side, the shank 11 at this time while rotating the bolt of the tip The part allows engagement with the nut part in the rod.

The shanker 11 is provided with a rotational force by the hydraulic motor, for this purpose, the shanker 11 is coupled to the shaft of the hydraulic motor, that is, the shank driving motor 12 is mounted on the upper end of the lock drill body (10) Accordingly, when the shanker driving motor 12 is operated, the shanker 11 may rotate and be coupled to the rod side.

At this time, the shanker driving motor 12 is a means for rotating the shanker 11, and provides a driving force for the rotation of the rod during the drilling and coupling, disassembly between the shanker 11 and the rod.

In addition, the lock drill body 10 is provided with a drifter 13 for forward and backward movement of the shanker 11 at the time of rod replacement, the drifter 13 at this time is a shanker drive motor including the shank 11 (12) It is provided in the form of holding the whole, and by the operation of this drifter 13, the shanker 11 can be coupled to the rod side while moving forward or backward, or can be separated from the rod side.

At this time, the drifter 13 is installed in a structure capable of moving forward and backward through the chain drive on the lock drill body (10).

On the other hand, the rod change assembly 14 is provided as a means for performing the drilling operation while automatically replacing or connecting the rod according to the drilling depth of the rock section when drilling blasting.

The rod change assembly 14 is a means for automatically supplying rods one by one on the side of the lock drill body 13 and includes a rod housing 15 having a plurality of rods, for example six rods. .

The rod housing 15, as shown in Figure 5, is formed in the form of a circular cap facing each other from both sides, arranged side by side on one side of the rock drill body 10, the support 31 of about two By the lock drill main body 10 side.

The rod housing 15 serves to prevent the vertical movement of the rod aligned with the rod guide 16 to be described later while receiving the rod, and the opening 32 through which the rod can pass. Is formed

In addition, the rod shaft 17 is provided as a means for sequentially aligning the rods and sequentially moving the rods to the supply position.

The rod shaft 17 is supported along the axis of the rod housing 15 in a rotatable structure on the side of the rod housing 15 through both ends of the bearing interposed therebetween, and has a disc shape for alignment of the rods. Two rod guides 16.

The rod guide 16 is coupled to the rod shaft 17 in a structure through which the center thereof is penetrated, and includes a plurality of rod seating grooves 24 formed at equal intervals along the circumference of the disc.

At this time, the rod seating groove 24 is provided with a number corresponding to the number of the rod mounted in the rod housing 15.

For example, six rod seating grooves 24 may be arranged at equal intervals along the circumference of the rod guide 16.

Accordingly, each rod fitted in each rod seating groove 24 of the rod guide 16 can be aligned while being arranged at regular intervals along the shaft, that is, the circumferential direction in parallel with the rod shaft 17. do.

In addition, the rod change assembly 14 is a shaft driving motor for rotating the entire rod shaft 17 including the rod to move the rod mounted in the aligned state in the rod housing 15 to the supply position ( 18).

As shown in FIG. 9, the shaft driving motor 18 is installed in a motor housing 33 provided in one cap portion of the rod housing 15, and the motor shaft at this time is provided with a rotary 34. Is connected to one end of the rod shaft 17.

Accordingly, when the shaft driving motor 18 is operated, the rotational force at this time is transmitted to the shaft side through the rotary 34, so that the entire rod can be rotated by the rotation of the rod shaft 17.

Here, the shaft driving motor 18 may apply a hydraulic motor that is operated by receiving hydraulic pressure through a solenoid valve (not shown).

In addition, the rod shaft 17 is mounted on the cam plate 23 concentrically, it is possible to control the operation of the shaft driving motor 18 by sensing the position of the cam plate 23 at this time. .

In particular, the load change assembly 14 includes two sensors, one sensor detects the cam plate 23 to function to determine the position where the load clamp 20 to be described later to hold the load, the rest One sensor senses the position of the rod and prevents collision with the surroundings such as the road change structure while the rod rotates due to the driver's malfunction.

For example, as shown in FIG. 8, the first sensor 21 and the second sensor 22 spaced apart from each other by one cap portion of the rod housing 15 are mounted. 21 detects the cam plate 23 rotating together with the rod shaft 17, and the second sensor 22 detects the tip of the rod rotating together with the rod shaft 17.

That is, the first sensor 11 is a means for providing a sensing value for accurately guiding the rod to the clamping position of the rod clamp 20. The first sensor 21 is predetermined on the cam plate 23. When the sensing unit (not shown) provided with a pitch (for example, a pitch corresponding to the distance between the rods) is detected, the shaft driving motor 18 is stopped, and the position at this time is the load clamp 20 Becomes the position to hold the rod.

Accordingly, as shown in FIG. 7, when the shaft driving motor 18 is operated in a step-by-step manner by the detection signal of the first sensor 21, each rod is also moved by one pitch, As a result, when the rod is moved to a position for holding the rod clamp 20, it can be clamped one by one at this position and sent to the lock drill assembly 26 side.

For example, when the first sensor 21 and the cam plate 23 coincide in the 52 ° rotation position, the first sensor 21 activates the solenoid valve with an electric signal, and is continuously operated by the solenoid valve. The hydraulic pressure provided to the shaft driving motor 18 is cut off, and as a result, the rod driving motor 18 stops and the rod stays at the position.

Subsequently, the rod clamp 20 catches the rod stopped at the 52 ° rotational position and moves the rod clamp 20 toward the lock drill assembly 26.

In addition, the second sensor 22 causes the rod disposed on the rod shaft 17 to be in standby state for rod replacement because the rod shaft 17 is further rotated by more than a predetermined rotational stroke (for example, 52 °). The sensing value is provided to prevent the collision with the rod clamp 20.

To this end, two second sensors 22 are respectively installed on the inner side of the cap portion of the rod housing 15 on both sides with the rod clamp 20 in the standby position on the rod shaft 17 side. When the sensing signal of the second sensor 22 is generated at this time, the shaft driving motor 18 stops operating.

Here, the first sensor 21 and the second sensor 21 is preferably applied to the proximity sensor of the type that detects the proximity distance to the cam plate 23 or the rod.

In addition, the present invention provides a rod clamp 20 for moving the rod toward the lock drill assembly 13 while rotating the clamp while the rod is operated by the two cylinders (19a, 19b).

The rod clamp 20, as shown in Figure 6, two cylinders (19a, 19b) for providing power for the clamping operation and the rotational operation, a pair of fixed clamp 20b for clamping the rod and movable A clamp 20c, and a clamp arm 20a for moving the rod to one side.

Here, the clamp arm (20a) is supported in a hinge structure on the lock drill body 10 side, one side thereof is connected to the rod of the cylinder (19a) is installed in a rotatable structure.

In addition, the fixed clamp 20b of the pair of clamps for clamping the rod is integrally formed on the clamp arm 20, and the movable clamp 20c is supported by the clamp arm 20 in a hinge structure, and one side thereof is the clamp arm ( It is connected to the rod of the cylinder 19b which is fixed to the rear end on the 20) side.

Accordingly, the movable clamp 20c can be clamped or unclamped while the movable clamp 20c is opened or retracted by the operation of the cylinder 19b, and the pair of clamps and clamp arms are actuated by the operation of the cylinder 19a. As the whole 20a rotates, the rod can be moved or returned to its original position.

In particular, such a rod clamp 20 is of a dual type disposed on both sides for stable gripping and movement of the rod, the cylinder 19a for rotating each of the rod clamp 10 at this time, Figure 10 As can be seen in the hydraulic circuit diagram of the control by the hydraulic device valve 25, when the rod is moved, both rod clamps 10 are balanced so that the rod can always be moved in parallel.

On the other hand, the rock drill apparatus of the present invention provides a feature that can be used by connecting a plurality of rods to each other.

To this end, at least one rod among the plurality of rods mounted in the rod housing 15 of the rod change assembly 14 is a rod having a nut portion formed at one end thereof and a nut formed at the other end thereof, and the remaining rods. They are rods having a nut part formed at one end and a bolt part formed at the other end.

Accordingly, in the case of a rod having a bit, it is connectable with the shanker 11 through the nut part, and in the case of the other rods, the nut part of the other rod which is connectable to the shanker 11 through the nut part and connected to each other through the bolt part. It becomes connectable.

For example, when the rod 1 having the bit is connected to the other rod 2 while being connected to the shanker 11, the rod 1 having the bit is moved downward by the feeder (not shown), and the rod clamp 20 In the state in which the rod 2 is moved to the lock drill main body 10 side, one end of the rod 2 is engaged with the shanker 11 and the other end is engaged with the rod 1 which is moved downward.

When the connection of the two rods 1 and 2 is completed in this way, the rod clamp 20 is returned to the position of the load change assembly 14 for waiting for the rod replacement after the clamping of the rod 2.

Therefore, looking at the process of supplying and connecting the rod in the rock drill device is configured as follows.

11A to 11E are schematic views showing a process of automatically supplying a rod in a rock drill apparatus according to an embodiment of the present invention.

As shown in Figs. 11A to 11E, the rod 1 with a bit is mounted on the lock drill body 10 of the lock drill assembly 26 in a fixed state by the shanker 11.

In order to connect the rod 2 100 to the rod 1 in this state, first, the rod 1 having the bit is moved to the lower side of the lock drill body 10 by the feeder, and then one step of the shaft driving motor 18 is continued. When the rod shaft 17 is rotated with a predetermined stroke by the operation and the rod 2 100 comes to the supply position (the position where the rod clamp is to be taken), the rod clamp 20 waiting there is the rod 2 (100). The rod 2 is moved to the lock drill body 10 side by clamping.

That is, the movable clamp 20c and the fixed clamp 20b hold the rod 2 100 by the operation of the cylinder 19b of the rod clamp 20.

Next, the clamp arm 20a is rotated by the operation of the cylinder 19a while the rod 2 100 is gripped so that the rod 2 100 moves the shank of the drifter 13 in the rock drill body 10. 11) Position it forward.

At this time, the rod 2 (100) is in a state coinciding with the central axis of the rod 1 and the shanker (11).

Next, by the forward of the drifter 13 and the operation of the shank driver driving motor 12, the shanker 11 rotates forward and is fastened to the rear nut part of the rod 2 100, and subsequently the rod 2 (100). ), The front bolt part is fastened to the rear nut part of the rod 1.

When the rod 1, the rod 2, and the shanker 11 are connected to each other, the rod clamp 20 is returned to its seat and is waiting for the supply of the rod 3 110.

Next, when the rod 1 and the rod 2 is connected as above, it is possible to perform the drilling operation by operating the rock drill assembly 26 from this time.

Here, since the operation method of drilling the blast hole with the bit in the rod by the operation of the lock drill assembly 26 will not be significantly different from the conventional description thereof will be omitted.

In the case of drilling the blast hole, if the rock section has a deep depth and requires a longer rod, the rod change assembly 14 side rod 3 110 is repeatedly operated by the rod clamp 20 as described above. When provided to the 10) side, it is possible to drill the blast hole deeper by using a rod consisting of a combination of rod 1 to rod 3.

In other words, it is possible to actively and flexibly cope with the change in the drilling depth by keeping the load on one side and automatically supplying the required number one by one.

On the other hand, after the drilling operation is completed, the load clamp 20 is moved from the rock drill assembly 26 to the load change assembly 14 in a reverse operation to supply the rod from the load change assembly 14 to the lock drill assembly 26. The load can be automatically restored one by one.

Thus, in the present invention, by having a plurality of rods in the rod change assembly disposed next to one side of the rock drill assembly, by drilling the blast holes while automatically assembling and disassembling the rods one by one according to the drilling depth of the rock section, It can improve the efficiency of the overall blast hole drilling work related to the blasting construction, such as reducing the time and labor associated with rod replacement.

10: rock drill body 11: shank
12: Sanger drive motor 13: Drifter
14: rod change assembly 15: rod housing
16: rod guide 17: rod shaft
18: shaft drive motor 19a, 19b: cylinder
20: rod clamp 20a: clamp arm
20b: fixed clamp 20c: movable clamp
21: first sensor 22: second sensor
23: cam plate 24: rod seating groove
25: hydraulic device valve 26: rock drill assembly
27: support structure 28: attachment
29: arm 30: support shaft
31: support 32: opening
33: motor housing 34: rotary

Claims (8)

The rock drill body 10, the shank 11 for coupling with the rod, the shank driver driving motor 12 for rotating the shank 11, and a drifter for moving the shank 11 back and forth when the rod is replaced ( A lock drill assembly 26, including 13), for drilling blast holes using rods;
A load change assembly 14 provided side by side of the lock drill body 10 and having a plurality of rods to automatically supply rods one by one to the rock drill assembly 26 according to the drilling depth;
Included, the rock drill apparatus having an auto rod change, characterized in that to perform the drilling operation while automatically replacing and / or connecting the rod according to the drilling depth of the rock section.
The method of claim 1, wherein the load change assembly 14 is supported side by side on one side of the lock drill body 10, the rod housing 15 and a plurality of rods and the central axis of the rod housing 15 Rod rods 17 arranged side by side and using a rod guide 16 to arrange a plurality of rods at regular intervals along the circumferential direction, and a rod connected to one end of the rod shaft 17 The lock drill assembly 26 is installed in the shaft driving motor 18 that rotates the entire shaft 17 and the lock drill main body 10 and rotates after clamping the rod by using two cylinders 19a and 19b. A lock drill device having an auto rod change, characterized in that it comprises a rod clamp (20) for moving the rod to the side.
The method according to claim 1 or 2, wherein at least one rod of the plurality of rods provided in the rod change assembly 14 is a form in which the bit is fastened at one end and the nut is formed at the other end, the other rod is formed at the end And a bolt portion formed at the other end thereof so as to be connected and assembled to each other so that the lock drill device having an auto rod change may be used.
The load change assembly (14) of claim 1 or 2, wherein the load change assembly (14) comprises a first sensor (21) and a second predecessor (22) mounted to the rod housing (15), wherein the first sensor (21) is a rod. The clamp 20 senses a position for holding the rod, and the second sensor 22 detects that the rod shaft 17 is rotated further by a predetermined rotation stroke, thereby preventing the rod from interfering with the surrounding structure. A lock drill device with an auto rod change characterized in that it is possible.
5. The proximity sensor of claim 4, wherein the first sensor 21 and the second sensor 21 are mounted on the rod shaft 17 to sense the cam plate 23 rotating together or the front end of the rod rotating together. Lock drill device with an automatic rod change, characterized in that the sensor type.
The clamp arm 20a according to claim 1 or 2, wherein the rod clamp 20 is supported by a hinge structure on the side of the lock drill body 10, and at one side thereof is connected to the rod of the cylinder 19a and is rotatable. A clamp 20b coupled to the distal end of the clamp arm 20a and a movable clamp 20c that is opened or retracted while being operated by a cylinder 19b on the clamp arm 20a as a means for clamping Lock drill apparatus provided with an auto rod change characterized by the above-mentioned.
The rod guide 16 of the rod shaft 17 of the rod change assembly 14 has a disc shape, the center of which is penetrated by the rod shaft 17, and evenly loads the rods. And a rod seating groove (24) formed along the circumference of the disc in a number corresponding to the rod for seating at intervals.
The method of claim 1 or claim 2, wherein the rod clamp 20 for moving the rod to the lock drill assembly 26 side is made of a dual type two are arranged on both sides, the role of rotating each rod clamp 10 Cylinder 19a is controlled by a hydraulic device valve (25), so that it is possible to always move in parallel when moving the rod lock drill device having an auto rod change.

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