JP3869205B2 - Drilling method, drilling auxiliary device and drilling device - Google Patents

Description

[0001]
【Technical field】
The present invention relates to drilling holes (holes) in slopes, rocks, bedrock, ground, and other ground (in this specification, all exposed surfaces of the earth surface are called ground) in forests, mountains, etc. The present invention relates to a method, a drilling auxiliary device and a drilling device used in this drilling method.
[0002]
[Prior art]
Drilling a hole (hole) is necessary, for example, when placing an anchor in falling rock prevention work, suspension bridge construction, or the like. Inject a solidified material such as mortar and cement into the drilled hole and insert the anchor. The drill rod may be used as an anchor as it is.
[0003]
In any case, the drilling operation is performed using a rock drill that generates striking force. Workers carry out drilling work by holding a rock drill. Since a rock drill generates high-speed vibration, the arm of the worker may also vibrate, causing occupational illness. In particular, when drilling holes on inclined surfaces, it is difficult to ensure a stable posture and the workability is poor. As long as an operator holds the rock drill by hand, the length of the anchor that can be placed is limited because the rock drill cannot be held at a very high place. When placing a long anchor, it was necessary to assemble a temporary scaffold so that the rock drill could be held at a high place.
[0004]
DISCLOSURE OF THE INVENTION
An object of this invention is to ensure the safety of workers.
[0005]
Another object of the present invention is to reduce the labor of workers.
[0006]
A further object of the present invention is to enable drilling capable of placing a long anchor without requiring a large temporary scaffolding or the like.
[0007]
The drilling method according to the present invention uses a drilling auxiliary device and a rock drill. A drilling device is constituted by the drilling auxiliary device and the rock drill.
[0008]
The drilling auxiliary device includes a drilling guide having a guide post, and a drilling machine mounting base having a portion for holding a rock drill, which is provided on the drilling guide so as to be movable along the guide post. It is what.
[0009]
A rock drill generates a striking force and is driven by compressed air or driven by an engine. Rock drills include air hammers, concrete breakers, drilling machines, excavators, and other names.
[0010]
In the drilling method according to the present invention, the drilling guide of the drilling auxiliary device is erected at the place where the drilling is to be drilled, and the drilling guide is drilled on a mounting base that can be moved up and down along the guide column. A rock drill is installed, the rock drill is operated so that it can be lowered along the guide strut of the drilling guide, and the drilling force generated by the rock drill is transmitted to the excavation rod for drilling. It is.
[0011]
The standing direction of the drilling guide (guide post) defines the direction of the drilled hole. Therefore, when drilling a hole that is substantially perpendicular to the ground (this is the most common and preferred mode), the drilling guide is set substantially perpendicular to the ground. Even when the ground is an inclined surface, the drilling guide is preferably set substantially perpendicular to the inclined surface. More preferably, an instrument (slant meter) for measuring the attitude of the drilling guide (whether it is perpendicular to the inclined surface) is provided in the drilling guide (guide strut).
[0012]
A rock drill for generating striking force and excavating the ground with a drilling rod is held on a mounting base that can be raised and lowered along the guide strut of the drilling guide. It is no longer necessary to have it by hand, which can increase work safety and reduce labor. In addition, if a long drilling guide is prepared, the rock drill can be held at a high position without temporary scaffolding or the like, so it is possible to cope with long anchors. Since the direction of drilling is also determined by the standing direction of the drilling guide, homogeneous drilling is possible.
[0013]
Preferably, a rock drill on / off switch is provided outside the rock drill and connected to the rock drill through a control line so that the operator can easily operate it.
[0014]
In a preferred embodiment, the drilling guide (preferably at the top thereof) is provided with a connector for linking a rope for holding the drilling guide in an upright state. Tighten multiple ropes from the drilling guide connector to the ground or standing trees or rocks, structures, etc. (ie directly or indirectly on the ground) Hold the hole guide upright.
[0015]
The operator does not need to hold the drilling guide in an upright state, and only needs to perform the monitoring work and the turning-on / off operation of the rock drill, and can take breaks alternately.
[0016]
If necessary, the drilling guide (preferably at its lower part) is provided with a fixture for fixing the lower end of the drilling guide to the ground, and the lower end of the drilling guide is fixed to the ground. The fixture may be a connector that connects one end of the rope. In this case, the lower end of the drilling guide is pulled in one direction or a plurality of directions using a rope. The fixture may be a pin that pierces the ground. The fixture may be a locking member that is attached to the lower end of the drilling guide and pierces the ground.
[0017]
In a preferred embodiment, the drilling rod guide is provided in the drilling guide. As a result, the excavation guide is guided and stable drilling work can be performed.
[0018]
A fixing tool for fixing the rock drill is provided on the rock drill mount. Helps prevent rock drills from falling and rotating.
[0019]
The rock drill can be pulled up by installing a pulley on top of the drilling guide and pulling a rope with one end tied to the mount or rock drill through the pulley. This is advantageous when holding a rock drill.
[0020]
In another embodiment, the drilling guide is provided with a mechanism for raising at least the rock drill mounting base by power, or the drilling guide provided with the mechanism is used. The jackhammer can be lifted by power without using the power of workers. The power includes compressed air, hydraulic pressure, electricity and the like.
[0021]
It is preferable that the mechanism is configured to raise and lower the rock drill mounting base.
[0022]
Even if the rock drill is operated so that it can fall under its own weight along the guide pillar of the drilling guide (with or without the lifting mechanism), the lifting mechanism can It may be operated while forcibly lowering.
[0023]
In another preferred embodiment, the drilling guide is constituted by a single guide post. In this case, the rock drill mounting base is provided with a plurality of rotatable rollers arranged to embed the guide struts. The weight of the drilling guide can be reduced.
[0024]
The anchor can be fixed in the ground by pouring a solidified material such as mortar and cement (preferably containing an admixture) into the hole excavated by the above method and inserting the anchor. Set). The excavating rod itself can also be used as an anchor. By using a hollow excavation rod, mortar and cement can be injected through the rod.
[0025]
It is possible to drill holes while connecting multiple drill rods with joint couplers. In this case, long anchors (including the jointed drill rod itself) can be handled.
[0026]
Anchors placed in the ground can be used for various purposes. For example, when installing a rockfall prevention structure in which a large number of wire ropes are stretched in a mesh and the crossing part of the wire rope is fastened with a cross clip, anchors are used to fix the ends and crossing parts of the wire rope. Used (for example, Patent No. 2679966). In addition, anchors are used to fix the rockfall prevention shelves and avalanche prevention shelves to the ground (such as inclined surfaces). Anchors are installed on slopes to prevent slope failure, anchors are used to fix suspension bridge suspension lines to the ground, or anchors are used to fix structures that secure suspension lines , Etc.
[0027]
【Example】
1 to 10 show a first embodiment.
[0028]
FIG. 1 shows a state of a work for digging a hole in the inclined surface S.
[0029]
This drilling operation is performed according to the following drilling method.
[0030]
A drilling guide 10 having a guide post 11 is erected at a place to be drilled.
[0031]
Although the details of the structure of the drilling guide 10 will be described later, one end of the rope 50 is connected to a U bolt (connector) 15 (see FIG. 4) provided on the upper part of the drilling guide 10 to By tying the end to a pile (not shown) hitting an inclined surface (ground) at a location away from the drilling guide 10, the rope 50 is tensioned. A plurality of ropes 50 are preferably stretched almost radially around the drilling guide 10. Thereby, the drilling guide 10 is held in a state where it does not fall.
[0032]
The drilling guide 10 is preferably perpendicular to the inclined surface. Desirably, the drilling guide 10 is provided with a device (for example, a slant meter) for measuring the standing angle, and the standing work is performed while checking the posture of the drilling guide 10.
[0033]
The rope 50 can be made of hemp, synthetic fiber, steel, or other materials, but a synthetic fiber rope is preferred from the viewpoint of ease of handling. The other end of the rope 50 may be fixed not only to piles but also to standing trees, rocks, structures (if any), and the like.
[0034]
Preferably, the lower end portion of the drilling guide 10 is also held so as not to move. For example, one end of the rope is tied to the U bolt 16 (see FIG. 4) provided on the lower crosspiece 12 of the drilling guide 10, and the other end of this rope is tied to a pile, standing tree, etc., and the rope is tensioned. . Alternatively, the pin 52 is inserted into the pin hole 18 formed in the lower horizontal rail 12, and the pin 52 is inserted into the ground (see FIG. 4).
[0035]
A rock drill mounting base 20 is provided on the guide column 11 of the drilling guide 10 so as to be movable up and down. Details of the rock drill mount 20 will also be described later.
[0036]
The rock drill 40 is attached to a mounting base 20 provided in a vertically extending manner on the drilling guide 10. That is, the handle (handle) 41 of the rock drill 40 is put into the holding portion 21A of the rock drill holding member 21 of the mount 20, and the bolt / nut 27 prevents its fall and rotation (FIGS. 7 to 9). reference).
[0037]
One end of the rope 36 is connected to the hole 28 (see FIGS. 7 and 8) in the upper portion of the mounting base 20. By pulling the other end of the rope 36 through the rope 36 to the pulley 35 attached to the top of the drilling guide 10, the mounting base 20 to which the rock drill 40 is attached is pulled up and held as it is.
[0038]
The excavation rod 60 is pierced into the ground at a location to be drilled (near the drilling guide 10). The excavation rod 60 is preferably parallel to the drilling guide 10. Further, the center of the hammer of the rock drill 40 and the center of the excavation rod 60 are made to coincide.
[0039]
When the drilling guide 10 is provided with the guide 17 of the excavation rod 60 at the lower part thereof, the excavation rod 60 is passed through the guide hole 17a of the guide 17 (see FIG. 6).
[0040]
The rock drill 40 pulled up is lowered by its own weight along the column 11 of the drilling guide 10. The hammer is applied to the upper end of the drilling rod 60. As described above, the mounting base 20 and the rock drill 40 mounted on the mounting base 20 can move up and down along the support column 11. The rock drill 40 is on the excavation rod 60. If necessary, the rope 36 is pulled and the operator supports the weight of the rock drill 40.
[0041]
The rock drill 40 is started in this state. The rock drill 40 operates in a state where it can fall under its own weight along the guide column 11 and applies the generated striking force to the upper end of the excavating rod 60, so that the excavating rod 60 enters the inside of the ground. If necessary, the operator supports the drilling rod 60 by hand in the initial state. The rope 36 may be continuously pulled by an operator.
[0042]
Preferably, the operation switch (operation lever) box 42 of the rock drill 40 is separated from the rock drill 40 and is connected to the rock drill 40 by a cable. Operation of the operation switch becomes easy.
[0043]
When a plurality of excavation rods 60 are used, after one excavation rod 60 enters the ground to some extent, a joint coupler 62 is used as shown in FIG. Connect another drilling rod 60. Since the outer periphery of the excavation rod 60 is threaded, the two excavation rods 60 are connected by the joint coupler 62 if an internal thread is cut on the inner peripheral surface of the joint coupler 62.
[0044]
Generally, after excavating a hole with the excavation rod 60, the excavation rod 60 is pulled out. Pour cement etc. into the hole and insert the anchor into the hole. If the cement solidifies, the anchor is fixed.
[0045]
The excavation rod 60 may be used as an anchor as it is. In this case, as shown in FIG. 3, a joint 63 is provided at the upper end of the excavation rod 60, and a hose 64 for pouring cement or the like is connected. Since the inside of the excavation rod 60 is hollow, supplied cement, mortar, etc. enter the rod 60 through the hose 64 and the joint 63. A hole is made in the lower end portion of the rod 60, and cement or the like flows out from the hole to fix the rod 60 when solidified.
[0046]
Needless to say, the work procedure is not limited to the above, for example, the drilling guide 10 may be erected after the rock drill 40 is mounted on the mounting base 20.
[0047]
4 to 6 show the drilling guide 10. The drilling guide 10 has two parallel guide struts 11 arranged at an interval, and these struts 11 are fixed to the upper side rail 13 and the lower side rail 12 at the upper and lower ends, respectively. Yes. Further, a mounting bar 14 for mounting the pulley 35 is passed between the support columns 11 slightly below the upper horizontal rail 13.
[0048]
A U-bolt 16 for connecting the rope 51 is fixed to the lower horizontal rail 12. If necessary, pin holes 18 through which the fixing pins 52 are inserted are formed in both ends of the horizontal rail 12 in the vertical direction.
[0049]
At the position of the lower crosspiece 12, a guide plate 17 for the excavation rod is fixed between the two columns 11. The guide plate 17 protrudes to one side between the columns 11, and a guide hole 17a is formed in the protruding portion. The guide hole 17a is opened diagonally outward of the guide plate 17 by a notch 17b.
[0050]
U bolts 15 for tying the rope 50 are fixed to both ends of the upper horizontal rail 13.
[0051]
The members constituting these drilling guides 10 are all made of metal (for example, aluminum, iron, or alloys thereof), like the members constituting the rock drill mounting base 20 described later. Is fixed by welding or bolts / nuts or rivets.
[0052]
7 to 10 show the configuration of the rock drill mount 20. The mounting base 20 includes two vertical members (L-angle members) 22 arranged in parallel at a distance, a holding member 21 and a lower horizontal rail 23 that fixedly connect the upper end portion and the lower end portion thereof, Reinforcing and rock drill positioning member 24 mounted vertically on the lower crosspiece 23 and provided in the middle of the two vertical members 22 in parallel with these vertical members 22, with the upper and lower ends being the holding member 21 and The reinforcing member 25 is fixed to the lower horizontal rail 23. Holes 28 for connecting the rope 36 and the like are formed in the upper and lower ends of the reinforcing member 25.
[0053]
Four sliding cylinders 26 are fixed to the lower side crosspiece 23 and the rear side of the holding member 21, respectively, at the position of the lower end and the extension of the upper end on the back side of the vertical member 22. The guide struts 11 of the drilling guide 10 are loosely passed through the cylindrical bodies 26, whereby the mounting base 20 is guided to the drilling guide 10 so as to be movable (up and down).
[0054]
The holding member 21 is provided with holding portions 21A at both ends thereof. The holding portion 21A has a substantially semicircular cross section (upper and lower edges protrude slightly from the semicircle). Further, both end portions of the holding portion 21A protrude and become fixing portions 21a. The fixing portion 21a has a hole 21b through which the bolt 27 is passed. The reinforcing and positioning member 24 is formed with a large recess 24a in the center.
[0055]
The rock drill 40 is positioned by placing the handle 41 in the holding portion 21A and placing the lower portion in the recess 24a of the member 24. If the rope 36 is pulled, the rock drill 40 can be held on the mount 20 even in this state, but preferably a bolt / nut 27 is used to prevent the rock drill 40 from falling and rotating. If the bolt 27 is passed through the upper and lower holes 21b of the fixing portion 21a of the holding portion 21A and the bolt is tightened, the handle 41 of the rock drill 40 is sandwiched between the holding portion 21A and the bolt 27.
[0056]
11 to 22 show a second embodiment.
[0057]
FIG. 11 shows the state of the work of digging in the inclined surface S. FIG. 12 is an enlarged view of a part thereof.
[0058]
This drilling operation is performed according to the following drilling method.
[0059]
As in the first embodiment described above, a drilling guide 110 having a guide post 111 is erected at a place to be drilled. One end of the rope 50 is connected to a hook 113 provided on the upper part of the drilling guide 110 (guide post 111), and the other end of the rope 50 is inclined at a position away from the drilling guide 110 (ground). Tie the rope 50 to the stake that is struck in S, and tension the rope 50. A plurality of ropes 50 are stretched almost radially around the drilling guide 110, and the drilling guide 110 is held without falling. The lower end portion of the drilling guide 110 is also held so as not to move. A tip locking member 118 is attached to the lower end of the drilling guide 110 (see FIGS. 13 and 14). The tip locking member 118 is pierced into the inclined surface S. One end of the rope 51 is connected to the hole 119 formed in the tip locking member 118, the other end of the rope 51 is connected to a pile, a standing tree, and the like, and the rope 51 is tensioned. The tip locking member 118 may be attached to the guide column 111 at the site, or may be attached in advance before being carried into the site.
[0060]
A rock drill mounting base 120 is provided on the guide column 111 of the drilling guide 110 so as to be movable up and down. The rock drill mount 120 is raised or lowered by an elevating mechanism that is operated by compressed air from the compressor 146. That is, the compressed air from the compressor 146 is sent into the guide column 111 (the inside of the guide column 111 is a cylinder) through the hose 181A or hose 181B according to the switching of the switching valve 145A on the operation table 145. It is done. When compressed air is sent through hose 181A (compressed air is released from the guide strut 111 through hose 181B to the atmosphere), the rock drill mount 120 is raised and compressed air is sent through hose 181B. Sometimes (compressed air is released from the guide strut 111 through the hose 181A to the atmosphere) the rock drill mount 120 is lowered.
[0061]
When the drilling guide 110 is erected, the rock drill mount 120 is preferably kept in the lowered position. After the drilling guide 110 is erected, the air rock drill 140 is attached to the rock drill mount 120. After the air rock drill 140 is mounted on the rock drill mount 120, the rock drill mount 120 is raised by the lifting mechanism. The drilling guide 110 may be erected after the rock drill 140 is mounted on the mount 120.
[0062]
The details of the configuration of the rock drill mount 120 and its lifting mechanism and the mounting of the air rock drill 140 to the rock drill mount 120 will be described later.
[0063]
A guide device 160 is provided at the lower end of the drilling guide 110 (where the guide post 111 and the tip locking member 118 are connected).
[0064]
At the location to be drilled (near the drilling guide 110), the drilling rod 60 is pierced into the ground in parallel with the drilling guide 110. The drilling rod 60 is held so as to be movable in the longitudinal direction by a guide device 160 (details will be described later) so that the lower part thereof is not displaced.
[0065]
The rock drill mounting base 120 that has been lifted is lowered along with the air rock drill 140 along the column 111 of the drilling guide 110. The hammer of the air rock drill 140 is applied to the upper end of the excavation rod 60. The air rock drill 140 is on the excavation rod 60.
[0066]
In this state, the air rock drill 140 is started. That is, compressed air flows from the compressor 146 through the hose 143 into the air rock drill 140. Since the air rock drill 140 gives the generated striking force to the upper end of the excavation rod 60, the excavation rod 60 enters the inside of the ground. At this time, either the air rock drill 140 may be forcibly lowered by the lifting device operated by the compressed air or may be dropped by its own weight. A bit 61 is provided at the tip of the drilling rod 60.
[0067]
The compressor 146 and the operation unit 145 are placed on a relatively flat place. In a relatively flat place, the rock drill mount 120 and the air rock drill 140 can be moved up and down, and drilling can be performed with the drill rod 60. The operation unit 145 adjusts the flow rate of compressed air from the compressor 146, switches the flow path, and starts and stops the air rock drill 140.
[0068]
Generally, after excavating a hole with the excavation rod 60, the excavation rod 60 is pulled out. In this case, the rock drill mount 120 is raised. Thereafter, cement or the like is poured into the hole drilled by the excavating rod 60, and the anchor is inserted into the hole. If the cement solidifies, the anchor is fixed. If a joint coupler is used as described above, a plurality of excavation rods can be connected.
[0069]
Needless to say, the work procedure is not limited to the above, for example, the drilling guide 110 may be erected after the rock drill 140 is mounted on the mount 120.
[0070]
Referring to FIG. 13, the tip locking member 118 has four blades 190, and the four blades 190 are radially coupled to each other at equal angular intervals (90 degree intervals). The blades 190 are tapered toward the lower part in order to make it easier to pierce the ground. The tip locking member 118 has four tips of four blades 190. A hole 119 for connecting one end of the rope 51 used for fixing to the ground is formed in the approximate center of the blade 190.
[0071]
Referring to FIGS. 14 and 15, the distal end locking member 118 is fixed to the attachment member 114 by welding at the base end portion. The attachment member 114 is H steel. The mounting member 114 is fixed to the lower end surface of the guide column 111 by a bolt 116.
[0072]
Further, a guide device 160 is attached to the attachment member 114. The guide device 160 is composed of two guide member halves 160A and 160B. These guide member halves 160A and 160B are attached to a bracket 162 fixed to the attachment member 114 at their bases by bolts / nuts 167 so as to be freely opened and closed.
[0073]
Guide cylinder halves 161A and 161B are fixed to the guide member halves 160A and 160B, respectively. Lock members 163A and 163B are provided at the front ends of the guide member halves 160A and 160B. The lock members 163A and 163B have two parallel fingers (so-called U-shaped). A lock bar 166 is attached to one lock member 163A by a bolt / nut 164 so as to be freely slidable. The lock bar 166 is provided with a knob 166a.
[0074]
The guide member halves 160A and 160B are closed so that the drilling rod 60 is sandwiched between the guide cylinder halves 161A and 161B. The lock bar 166 is inserted between the two fingers of the lock member 163B. The drilling rod 60 is held in a guide cylinder formed by the guide cylinder halves 161A and 161B so as to be movable in the longitudinal direction.
[0075]
Positioning projections 165a and positioning recesses 165b are formed on the sides of the guide member half 160A and the guide member half 160B that are in contact with each other. When the guide member half body 160A and the guide member half body 160B are closed, the positioning protrusion 165a enters the positioning recess 165b, and the guide member half body 160A and the guide member half body 160B are exactly aligned, and two guide cylinders Thus, the guide cylinders are correctly formed without the body halves 161A and 161B being displaced from each other.
[0076]
Referring to FIGS. 16 and 17, the guide column 111 has a quadrangular prism shape and is formed of an aluminum alloy. Therefore, the guide post 111 is lightweight. The four corners of the guide column 111 are cut off substantially at right angles, and a roller guide (concave portion) 112 extending in the longitudinal direction is formed. A large circular hole (cylinder) 151 is formed in the guide strut 111 in the longitudinal direction.
[0077]
In the guide column 111, a compressed air passage 152 extending in the longitudinal direction and two grooves 153 and 154 are formed at positions sandwiching the cylinder 151, respectively. These grooves 153 and 154 are open to the outside. The groove 153 is located outside the groove 154 and is wider. Metal seal bands 155 and 156 are fitted in the outer groove 153. These seal bands 155 and 156 are adsorbed by a rubber magnet 157 embedded so as to look into the groove 154.
[0078]
Referring to FIGS. 18 and 19, a non-magnetic aluminum alloy transmission body 172 is sandwiched between double seal bands 155 and 156 fixed to the wide groove 153 of the guide post 111. The transmission body 172 is flat and has an almost elliptical shape, and protrudes from the groove 154 outward and inward (cylinder 151) of the guide column 111. The outer and inner seal bands 155 and 156 are partially pushed outward and inward by the transmission body 172.
[0079]
A propulsion body 173 is contained in the cylinder 151 in the guide column 111. The propulsion body 173 is composed of two halves, each formed of a permanent magnet. The two halves of the propulsion body 173 sandwich the portion of the transmission body 172 protruding into the cylinder 151 and suck each other, so that the two halves are integrated with the transmission body 172. Since the guide column 111 is made of a non-magnetic aluminum alloy, the propulsion body 173 is not attracted to the guide column 111.
[0080]
Buffer members 175 are provided at both ends of the propulsion body 173. An O-ring 174 is attached to the buffer member 175 and is in close contact with the inner surface of the cylinder 151.
[0081]
The connecting member 171 is formed with a recess into which the transmission body 172 is fitted, and the transmission body 172 is in this recess. The connecting member 171 is formed of a magnetic material (for example, iron), and is attracted to the surface of the guide column 111 by the magnetic force of the propulsion body 173. A rubber material 177 is attached to the entire connecting member 171 and the rubber material 177 is in close contact with one surface of the guide column 111. As a result, the cylinder 151 is isolated from the outside air even if the grooves 153 and 154 are present. That is, the cylinder 151 is sealed. Buffer members 178 are also attached to both ends of the connecting member 171. The connecting member 171 has a hole 171a.
[0082]
Both ends of the guide column 111 are closed by blocking blocks 111a and 111b, respectively. An air hole is formed in the closing block 111b located at the lower end of the guide column 111, and joints 180a and 180b for connecting the hoses 181A and 181B are provided therein (see also FIG. 15). The compressed air flowing in from the joint 180a flows into the lower space divided by the propulsion body 173 of the cylinder 151 from the outflow inlet 182a, or the compressed air in this space is guided from the outflow inlet 182a to the hose 181A through the joint 180a. The compressed air flowing from the hose 181B through the joint 180b passes through the compressed air passage 152 in the guide column 111 and is further divided by the propulsion body 173 from the outflow inlet 182b provided in the closed block 111b at the upper end of the guide column 111. The compressed air flowing into the upper space in the cylinder 151 or in the space is guided to the hose 181B from the joint 180b through the outlet / inlet 182b and the compressed air passage 152.
[0083]
When compressed air flows in from the lower end (outflow inlet 182a) side of the guide column 111, the compressed air raises the propulsion body 173. Conversely, when compressed air flows from the upper end (outflow inlet 182 b) side of the guide column 111, the compressed air lowers the propulsion body 173.
[0084]
The raising and lowering of the propulsion body 173 is transmitted to the connecting member 171 via the transmission body 172, and the rock drill mounting base 120 and the air rock drill 140 are raised and lowered as described later. The lifting mechanism 170 is configured as described above.
[0085]
Referring to FIGS. 20 to 22, the rock drill mount 120 includes four rollers 124. These rollers 124 are provided with flanges 124 a at both ends, and these flanges 124 a are along the roller guide 112 of the guide column 111. The roller 124 is rotatably supported on the shaft 122.
[0086]
The rock drill mounting base 120 includes two support plates 121, and these support plates 121 are fixed by connecting plates 126. The support plate 121 and the connecting plate 126 form a rock drill mounting base 120 having a substantially rectangular cross section, and a guide column 111 passes through the rock drill mounting base 120. The shaft 122 of the roller 124 is fixed to the support plate 121.
[0087]
There is a gap between one support plate 121 and one side surface of the guide column 111 (the side where the connecting member 171 is provided). In order to form this interval, the shaft 122 is provided with a long collar 125a. The distance between the other support plate 121 and the other side of the guide column 111 is narrow, and the shaft 122 is provided with a short collar 125b.
[0088]
Two connecting rods 126 a are passed (fixed) between the connecting plates 126, and the connecting rod 126 a passes through the hole 171 a of the connecting member 171. Thereby, when the connecting member 171 moves up and down, the rock drill mounting base 120 also moves up and down.
[0089]
A bracket 129 is fixed to one support plate 121. A bracket 142 is also fixed to the air rock drill 140. These bracket 129 and bracket 142 are connected by a bolt / nut 144. As a result, the air rock drill 140 is mounted on the rock drill mount 120.
[0090]
FIG. 23 shows another embodiment of the tip locking member. The front end locking member 118A includes a rod 191A and four blades 190A. The lower end of the rod 191A is slightly sharpened so that it can easily pierce the ground. Four blades 190A are fixed (fixed) radially to the rod 191A at equiangular intervals (90 degree intervals). A hole 119A for tying the rope 51 is formed in the blade 190A. The upper end surface of the tip locking member 118A is welded to the mounting member 114 in the same manner as the tip locking member 118 described above.
[0091]
FIG. 24 shows another embodiment of the lifting mechanism. The inside of the guide column 111A is hollow. A screw rod 200 is rotatably provided in the internal space by a bearing 201. The screw rod 200 extends in the longitudinal direction of the guide column 111A. A motor 204 is fixed to the lower end of the internal space of the guide post 111A, and the rotation of the motor 204 is transmitted to the screw rod 200 via the gear mechanism 203.
[0092]
A slit 154A extending in the longitudinal direction is formed on one side surface of the guide post 111A. A moving body 202 having a female screw fitted to the screw rod 200 is attached to the screw rod 200. A part of the moving body 202 goes out through the slit 154A. The above-described rock drill mounting base 120 is connected to a portion of the movable body 202 that is exposed to the outside.
[0093]
As the motor 204 rotates, the screw rod 200 rotates and the moving body 202 moves up and down along the guide column 111A.
[0094]
FIG. 25 shows still another embodiment of the lifting mechanism. Sprockets 206 are rotatably provided in the upper and lower ends of the guide strut 111B, and a chain 205 is hung on these sprockets 206. . One sprocket 206 is rotated by a motor (not shown) fixed to the guide column 111B.
[0095]
A slit 154B is formed on one side surface of the guide column 111B, and a part of the moving body 207 fixed to the chain 205 protrudes outside through the slit 154B. The rock drill mount 120 is connected to the protruding portion of the moving body 207.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state of drilling work according to a first embodiment.
FIG. 2 is a front view showing a state in which two excavation rods are connected.
FIG. 3 is a front view showing a mode in which cement, mortar, or the like is poured into a drill rod.
FIG. 4 is a front view of a drilling guide according to the first embodiment.
FIG. 5 is a side view of a drilling guide.
FIG. 6 is a plan view showing a guide of a drilling rod attached to a drilling guide.
FIG. 7 is a front view of a rock drill mount according to the first embodiment.
FIG. 8 is a side view of a rock drill mount.
FIG. 9 is a plan view of a rock drill mount.
FIG. 10 is a bottom view of a rock drill mount.
FIG. 11 is a diagram showing a state of drilling work according to a second embodiment.
FIG. 12 is an enlarged view of the entire drilling device according to the second embodiment.
FIG. 13 is a perspective view showing a tip locking member of a drilling guide according to a second embodiment.
FIG. 14 is a side view of the guide device attached to the drilling guide.
15 is a cross-sectional view taken along line XV-XV in FIG.
FIG. 16 is a cross-sectional view of a guide column according to a second embodiment.
FIG. 17 is an enlarged sectional view of a groove of a guide column.
FIG. 18 is a sectional view of a moving mechanism for a rock drill mount according to a second embodiment.
19 is a cross-sectional view taken along line XIX-XIX in FIG.
FIG. 20 is a side view of a rock drill mount.
21 is a cross-sectional view taken along line XXI-XXI in FIG.
22 is a cross-sectional view taken along line XXII-XXII in FIG.
FIG. 23 is a perspective view showing another embodiment of the tip locking member.
FIG. 24 is a cross-sectional view of a moving mechanism of a rock drill mount according to still another embodiment.
FIG. 25 is a sectional view of a moving mechanism of a rock drill mount according to still another embodiment.
[Explanation of symbols]
10,110 Drilling guide
11, 111, 111A, 111B Guide post
15, 16 U bolt
17 Drilling rod guide
18 pin hole
20,120 Jackhammer mounting base
21 Holding member
21A Holding part
21a Fixed part
26 Sliding cylinder
27,144 Bolt / Nut
36, 50, 51 rope
40, 140 jackhammer
113 Hanging
118,118A Tip locking member
119 holes
124 rolls
129, 142 Bracket
146 Compressor
151 cylinders
160 Guide device
161A, 161B Guide cylinder half
170 Lifting mechanism

Claims (9)

A guide for drilling that has a guide post and is fixed to the ground with a fixture at the lower end is erected at the place to be drilled.
The drilling guide is on its two parallel of the guide posts which are spaced, which are fixed respectively to the upper rungs and lower rungs at the lower end, the fixture, the lower rungs opposite ends the guide pin holes in the outer position than the struts of drilled vertically, which pierce the ground by inserting the fixing pin into the pin holes of this, the drilling by the fixture Fix the lower end of the guide for the ground to the ground,
A rock drill is mounted on a mounting base that can be moved up and down along the guide column of the drilling guide.
Breakers actuates the rock drill cutting as ready descends along the guide columns of the drilling guide, to drilling by a striking force generated Breakers is transmitted to the drill rod,
Drilling method.   The fixing tool includes a connecting tool provided at a lower end portion of the drilling guide, and one end of a rope is connected to the connecting tool, and the rope is stretched to fix the lower end portion of the drilling guide. Item 2. The drilling method according to Item 1.   The drilling method according to claim 1 or 2, wherein a plurality of ropes are stretched from the drilling guide, whereby the drilling guide is held upright. Chi lifting two parallel guide posts which are spaced apart, on these guide columns are thereof and respectively fixed drilling guide, the upper rungs and lower rungs at the lower end
The drilling hole guide is provided movably along the guide strut, and has a rock drill mounting base having a portion for holding the rock drill,
The outer position than the guide columns of the opposite ends of the lower rungs of the guide posts pierce the ground to secure the lower end of the drilling guide erected in place to drilling in the ground fixed A pin hole is formed to insert the pin.
Drilling assist device. The drilling guide further comprises a connecting device that links the ropes for securing the lower end of the drilling guide erected in place to drilled the lower end, cutting according to claim 4 Hole assist device. The hole drilling auxiliary device according to claim 4 or 5, wherein the hole drilling guide further includes a connector for linking a rope for holding the hole drilling guide in an upright state. The drilling auxiliary device according to any one of claims 4 to 6, wherein the drilling guide further includes a guide for a drilling rod. The drilling auxiliary device according to any one of claims 4 to 7, wherein the rock drill mounting base includes a fixture for fixing the rock drill.   A drilling device comprising the drilling auxiliary device according to any one of claims 4 to 8, and a rock drill attached to a rock drill mounting base.

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