JP3378907B2 - Fuse tube withdrawal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosive loading device for loading explosives through a loading hose into a blast hole formed in a rock mass, and more particularly to loading an explosive to which a squib is connected into the blast hole. After that, the present invention relates to a squib withdrawal device for withdrawing a squib extending inside the loading hose.

[0002]

2. Description of the Related Art As a technique for loading explosives into a blast hole drilled in rock, various devices are available, as described in, for example, Japanese Utility Model Publication No. 63-39595 and Japanese Patent Publication No. 63-267900. Being developed. These technologies are
Insert the tip of the loading hose into the blast hole drilled at the blasting position of the bedrock, supply the explosive to the explosive guide hole at the base end of the loading hose, and use compressed air as explosive transfer means from the base end side. It is a technique for loading explosives, which are used and pressed by compressed air, through the inside of the loading hose to load the interior of the blast hole.

[0003]

By the way, there is a loading method in which a long tube is connected to an explosive in advance and the tube is loaded into the blast hole together with the explosive via a loading hose. However, when the explosive with a squib is loaded, even if the explosive is loaded into the blast hole, the long squib will extend inside the loading hose, and the loading hose will be exposed to the outside through the blast hole. Unless the internal squib is pulled out, the next explosive charge operation cannot be continued.

Therefore, at the time of loading the explosive with the squib, it is indispensable for the operator to pull out the squib, which causes problems in labor saving and work efficiency. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a squib extraction device capable of automatically withdrawing a squib extending inside a loading hose at the time of loading. To aim.

[0005]

According to a first aspect of the present invention, a loading hose is inserted into a blast hole formed in a rock mass, and explosive is transferred to the blast hole by means of an explosive transfer means through the loading hose. In the explosive loading device to be loaded, the explosive to which a detonation tube is connected is loaded into the blast hole, and then the detonation tube extending inside the loading hose is withdrawn. This device is disposed on the tip side of the loading device, and at least a pair of nipping rollers for nipping the squib extending toward the tip of the loading device by moving them close to each other by the operation of the moving mechanism, This is a device provided with a rotary motor that transmits a rotational force in a direction of pulling out the squib to at least one of the sandwiching rollers.

Further, the invention according to claim 2 is, in the squib extraction device according to claim 1, in the vicinity of the nip roller, the ignition is provided on the roller surface side of the nip roller to which the rotational force is transmitted by the rotary motor. The device is provided with a pressing member for pressing the pipe. The invention according to claim 3 is the same as claim 1
Alternatively, in the flue tube withdrawing device according to the second aspect, the pair of nipping rollers are disposed at the tip end portions of the first and second withdrawing levers whose base ends are supported by the rotary shaft, and the first and second withdrawing levers By rotating around the rotation axis,
The sandwiching rollers are structured to come close to or apart from each other, and an actuator for moving the pair of sandwiching rollers toward or away from each other is provided on the base end side of the first and second extraction levers. It is a series of devices.

[0007]

When the explosive loading device is arranged toward the blast hole, the loading hose is inserted into the blast hole, and the explosive to which the squib is connected is loaded into the blast hole, the blast hole and the explosive loading device are connected to each other. A squib extends in. Therefore, in the detonator extracting device according to claim 1 of the present invention, when the pair of nipping rollers are moved closer to each other by the moving mechanism, these nipping rollers nip the tube on the tip side of the explosive loading device. . Then, when the rotary motor is driven, one of the sandwiching rollers sandwiching the squib rotates in a direction in which the squib is pulled out. Due to the rotation of the nip roller, the squib inside the loading hose is automatically pulled out, and is completely pulled out from the loading hose and hangs down from the mouth of the blast hole. Therefore, since the work of pulling out the squib can be automatically performed, a great labor saving can be achieved.

According to the second aspect of the present invention, in addition to the effects of the first aspect, when the pinching roller transmits the rotational force by the rotary motor, the pressing member is Since the squib is pressed against the roller surface side of the nip roller, no slip occurs in the squib to be pulled out. Therefore, the squib is surely pulled out.

According to the flue tube withdrawing device of the third aspect of the present invention, the action of the first or second aspect of the invention can be obtained, and the operation of pinching the flue tube or releasing the pinching of the flue tube can be performed. Can be performed by a simple mechanism.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the types of explosives loaded in the blast hole and the order of loading. First, in the blast hole H formed by drilling rock to a predetermined depth, the long squib 8 One cylindrical parent dynamite (hereinafter abbreviated as parent die) DM ₁ with one end connected is loaded, and then two cylindrical additional dynamite (hereinafter, increased) for increasing the blasting force. A die is abbreviated.) _Two cylindrical closures, which are abbreviated as anchors, which are filled with DM ₂ and finally have a structure in which sand or the like is surrounded by a package body and can close the blast hole H A member (hereinafter referred to as an anchor) AN is loaded. It should be noted that these parent die DM ₁ and additional die DM
The outer diameters of ₂ and Anco AN are set to be substantially the same.

FIG. 2 is a side view of an explosive loading device equipped with a rock drilling machine according to the present invention, and FIG. 3 is a plan view of the explosive loading device. This explosive loading device 10 is provided with a driver's cab 15 on the upper part of a traveling carriage 13 on which a drive power unit is mounted, and on the front side of the traveling carriage 13, a boring boom 19 for supporting a rock drilling machine 17 so that the rock drilling machine 17 can be lowered and turned. A loading boom 23 that supports the hose holder 21 so that it can turn up and down, and a work floor boom 27 that supports the work floor 25 so that it can turn up and down are connected movably to each other.

The hose holder 21 supports a tip end side of a loading hose 29 which serves as a transfer path for explosives to the blast hole H, and a base end portion of the loading hose 29 is mounted on the traveling carriage 13. It is connected to the mounted explosives supply section 31. Further, the explosives supply section 31 is movable by a slide device 33 in the front-rear direction of the traveling carriage 13. Reference numeral 35 in the drawing is an outrigger arranged at a lower front and rear position of the traveling carriage 13 to fix the traveling carriage 13 at the time of work, and reference numeral 37 in the drawing is a traveling carriage 13.
It is a compressor fixed on the upper side, and the reference numeral 39 in the drawing is
It is a hydraulic hose to which hydraulic oil of a predetermined pressure is supplied from a hydraulic supply device (not shown).

The respective structural parts of the explosive loading device 10 will be described in detail below with reference to FIGS. 2 to 9. The base end of the work floor boom 27 is connected to a boom yoke 40 fixed on the traveling carriage 13 via a horizontal axis, and
The work floor 25 is supported so as to be able to be laid down by the expansion and contraction operation of a gravitation cylinder (not shown), and the work floor 25 is movable to a predetermined height and a predetermined lateral position.

The base end of the boom for boring 19 is connected to the boom yoke 40 via a horizontal shaft, and the entire boom is rotated at a predetermined angle by the expansion / contraction operation of the pair of turning cylinders 40a and the not-shown descending cylinder. It is supported so that it can greet and turn horizontally. The boring 19 has a variable stroke due to the expansion and contraction of the stroke cylinder 19a, and the rock drilling machine 17 at the tip thereof is swingably connected via a universal joint 42 and a rotary actuator 44. ing. As a result, the rock drilling machine 17 can be disposed opposite to the planned drilling position of the blast hole H. The rock drilling machine 17 is
A well-known technique of forming a blast hole H in rock by the impact motion of an excavating drill is adopted.

The base end of the loading boom 23 is connected to the boom yoke 40 via a horizontal shaft, and the entire boom is rotated at a predetermined angle by the expansion and contraction operation of the pair of revolving cylinders 40a and the descending cylinder 40b. It is supported so that it can greet and turn horizontally. And this loading boom 23
Also, the stroke is made variable by the expansion and contraction operation of the stroke cylinder 23a, and the rotary actuator 4 is provided at the tip end thereof via the universal joint 46.
8 are connected. Also, universal joint 4
The tip end of 6 is vertically movable by the extension / contraction operation of the depression cylinder 46a, and the tip end of the rotary actuator 48 is pivotable horizontally / left / right by the extension / contraction operation of the turning cylinder 48a. .
The rotary actuator 48 has a tip end portion which is tiltable via a horizontal shaft.
0 is connected, and a guide shell 52 on which the hose holder 21 is mounted is arranged on the guide mounting 50. The guide shell 52 is movable in the front-rear direction by a slide cylinder 50a incorporated in the guide mounting 50. Further, a tilt cylinder 54 is provided between the guide mounting 50 and the tip of the rotary actuator 48, and the expansion / contraction operation of the tilt cylinder 54 causes the front side of the guide mounting 50 and the guide shell 52 to incline downward. Alternatively, it is possible to perform a tilting motion that tilts upward. Further, the guide mounting 50 and the guide shell 52
The drive of the rotary actuator 48 described above enables the rotary motion about an axis substantially parallel to the extending direction of the guide shell 52.

On the other hand, in the slide device 33, as shown in FIG. 2, the frame body 33a, which is slidably mounted in the front-rear direction on the frame 13a of the traveling carriage 13, is driven to a predetermined distance by driving the slide mechanism. It is a device that can be moved only forward and backward. The slide mechanism has, for example, a structure in which a chain that extends in the front-rear direction on the pedestal 13a and is fixed at a predetermined position is wound around a sprocket that is directly connected to a drive motor fixed on the frame body 33a. The forward / backward rotation of the drive motor allows the frame body 33a to move back and forth.

An explosives supply port 33c, to which the base end of the loading hose 29 is connected, is provided on the frame 33b located on the most front side of the slide device 33, and the explosives supply port is also provided. An air supply unit 60 capable of sending compressed air to 33c is provided. The explosives supply unit 31, the push rod feed device 68, and the push rod winding device 70 described above are connected to the rear side of the air supply unit 60 (the rear side in the front-rear direction of the traveling vehicle 13). Are arranged.

The loading hose 29 has an inner diameter through which the parent die DM ₁ , the additional die DM ₂ and the ANCO AN can pass.
A loading hose having an outer diameter smaller than that of the blast hole H formed in the bedrock, a synthetic resin hose, or a rubber hose. Then, the hose holder 21 and the explosives supply port 3
When the loading hose 29 does not extend and the slide device 33 is positioned at the frontmost position, the loading hose 29 extending between the loading hose 3 and the loading hose 3c is bent as shown in FIG. It is set to length.

Further, the air supply unit 60 includes the compressor 3
An air supply pipe 60b capable of supplying the compressed air generated in 7 to the explosives supply port 29a and a supply valve 60c arranged in the middle of the air supply pipe 60b are provided, and the supply valve 60c is opened. When the operation is performed, compressed air is pressure-fed into the loading hose 29 via the explosives supply port 33c. And this explosive supply port 33c
Communicates with the explosives insertion port 29d opening toward the rear side, and the explosives insertion port 29d is further connected to the explosives supply unit 3
The parent die feed port 62b, the additional die feed port 64a and the anchor feed port 66a extend in the front-rear direction of the traveling carriage 13 and coincide with each other, and the parent die DM ₁ described above from these feed ports toward the explosive feed port 33c. The additional die DM ₂ and Anco AN are sequentially supplied. It should be noted that the compressed air is supplied to the explosives supply port 33b by opening the supply valve 60c.
When expelled, the explosives insertion port 29d is closed.

As shown in FIG. 3, the explosives supply section 31 is a parent die supply section 6 disposed at the forefront of the traveling carriage 13.
2, an additional die supply section 64 disposed on the rear side of the parent die supply section 62, and an anchor supply section 66 disposed on the rear side of the additional die supply section 64. And
The parent die supply unit 62 is formed by accommodating a plurality of cylindrical parent dies each having a fuse attached, and one parent die DM ₁ is placed at the same height position communicating with the explosive insertion port 29d. A parent die supply port 62b that is automatically supplied is provided.

Further, the additional die supply section 64 is a storage device in the form of a hopper, and a plurality of additional dies are stored with their axes directed toward the parent die supply section 62. Then, two additional dies DM ₂ are sequentially supplied in series to the gutter-shaped additional dies supply port 64a provided in the lower portion. The additional die supply port 64a communicates with the parent die supply port 62b with its axis aligned.

Further, the anchor feeding unit 66 is a storage device in the form of a conveyor, and a plurality of anchors are stored horizontally on a conveyor (not shown) with their axes increased and toward the die feeding unit 64. Then, two Anco ANs are sequentially supplied to the Anco supply port 66a by the movement of the conveyor. The angler supply port 66a
Are in communication with the additional die supply port 64a with their axes aligned.

On the other hand, on the rear side of the explosives supply section 31, a long push rod 72, a push rod winding device 70 for winding the push rod 72, and a feeding or pulling back of the push rod 72 are controlled. A push rod feed device 68 is mounted. The push rod 72 is a flexible member having an outer diameter slightly smaller than the inner diameter of the loading hose 29,
Anko supply port 66a, additional die supply port 64a, parent die supply port 62b, explosives insertion port 29d and explosive supply port 33b.
And is movable inside the loading hose 29.

The push rod feed device 68 is a device for holding the outer periphery of the push rod 72 and feeding it to the anchor supply port 66a side for a predetermined length, or for pulling it back from the anchor supply port 66a side. Further, in the push rod winding device 70, a roller 70b is rotatably arranged on a pair of support members 70a fixed on the frame body 33a, and a long push rod 72 is wound around the roller 70b a predetermined number of times. The push rod 72 is fed to the anchor supply port 66a side by the forward rotation (direction of arrow A) of the device 70, and the push rod 72 is rotated backward (direction of arrow B).
Is pulled back from the anchor supply port 66a side and caught therein.

On the other hand, the hose holder 21 is disposed on the guide shell 52 which can be lowered and rotated right and left by the loading boom 23 and a plurality of actuators.
As shown in FIGS. 4 to 6, the hose holder 21 includes a loading device 80 for loading the parent die DM ₁ , the additional die DM ₂ and Anco AN into the blast hole H formed in the rock, and the blast hole H. The closing tamping device 82 and the squib withdrawing device 84 are devices that can be moved in the width direction of the guide shell 52 by a moving mechanism 89 having a moving cylinder 88.

As shown in FIG. 6, the tamping device 82 blasts the Anco AN loaded in the blast hole H by breaking the package and deforming the shape of sand or the like by the thrusting action of the loading rod 92. A device for closing the hole H, and the telescopic air cylinder 92e is expanded / contracted so that the insertion rod 92 is closed.
Is reciprocating in the longitudinal direction. Further, the squib withdrawing device 84 is a device for withdrawing the squib 8 connected to the parent die DM ₁ from the inside of the loading hose 29.

The loading section 80, as shown in FIG.
A guide tube body 80a is provided along the longitudinal direction of the guide shell 52, and a guide hose 29 is provided at the base end side of the guide tube body 80a and holds the outer periphery of the load hose 29 so that the tip portion of the load hose 29 is predetermined. It is configured by a loading hose feed device 90 that is inserted into the blast hole H by an operation of sending out by a length or withdraws the loading hose 29 from the blast hole H by a pullback operation.

Further, the squib extraction device 84 has a structure shown in FIGS. 7 to 9. That is, on the device plate 84a fixed to the slide plate 91, the rail 84b is arranged in the direction along the axis P of the hose holder 80. The rail 84b is provided with a pair of slide members 84c that are arranged to face each other and that are provided with sliding portions 84c ₁ that come into contact with the rail 84b. And
A slide cylinder 84d with the cylinder rod 84d ₁ facing forward is disposed on the rear side of the rail 84b, and the cylinder rod 84d ₁ and the pair of slide members 80 are disposed.
c is connected.

An engaging member 84e is fixed on the rail 84b between the pair of slide members 84c.
The engaging member 84e is provided with a first slit 84e ₁ which is inclined upward as it goes rearward, and a second slit 84e _{1 which} is continuous with the first slit 84e ₁ and extends parallel to the axis P.
The slit 84e ₂ is formed. The first and second extraction levers 84f and 84g are rotatably disposed on the upper portion of the pair of slide members 84c.

The first pull-out lever 84f has a long portion 84
A pair of slide members 84, which is a bending member having a substantially L-shaped appearance and configured by f ₁ and a short portion 84 f _2.
The proximal end portion of the long portion 84f ₁ extending between c is rotatably connected to the uppermost end portion of these slide members 84c via a horizontal shaft 84f ₃ , and the short portion 84f ₂ is a guide tube. It extends above the body 80a. A rotary roller (sandwiching roller) 84f ₅ is rotatably disposed on the short length portion 84f ₂ via a horizontal rotary shaft 84f _4, and the rear side of the rotary roller 84f ₅ is
A claw member (pressing member) 84f ₆ is arranged facing downward. As a result, the first pull-out lever 84f is arranged so that the roller 84f ₅ can rotate in the vertical direction about the horizontal shaft 84f ₃ .

The second extraction lever 84g has a first
It is arranged below the pull-out lever 84f, the base end side is connected between the pair of slide members 84c via the horizontal shaft 84g ₁ , and the tip end portion bent toward the guide tubular body 80a side is A rotary roller (sandwiching roller) 84g ₂ arranged via a horizontal rotary shaft, and the rotary roller 84
A hydraulic rotary motor 84g _{3 for} rotating g ₂ in a predetermined direction (direction of arrow R in FIG. 8) is provided. In addition, the second pull-out lever 84g further rearward of the horizontal shaft 84g _1.
The upper end of the base end portion of the first contact portion is in contact with the lower side portion of the first extraction lever 84f through the protrusion 84g ₄ . A crank member 84h extends downward and is fixed to the base end of the crank member 84h, and a crank pin 84h ₁ is fixed to the lower portion of the crank member 84h. This crank pin 84h ₁
Are engaged inside the first slit 84e ₁ of the engaging member 84e described above.

The second pull-out lever 84g
Horizontal axis 84g₁Forward position and the first extraction lever 8
A coil spring 84j is connected between 4f and
There is. And, the squib extraction device 84 having the above-mentioned configuration
If you do not pull out the squib 8, slide
The first and second withdrawal operations are performed by retracting the cylinder 84d.
The levers 84f and 84g on the outer peripheral side of the guide cylinder 80a.
Evacuate. That is, as shown in FIG.
Cylinder rod 80d of Linda 80d₁Retreat
And the sliding portion 80c on the rail 84b.₁Slides one
The pair of slide members 80c moves to the rear side. these
When the slide member 80c is moved rearward, the second pull-out is performed.
The lever 80g and the crank member 80h
Crank pin 80h₁Is the first clearance of the engaging member 80e.
Lit 80e₁Move diagonally upward from the bottom to the top
I will do it. This crank pin 80h₁Is the first slit 8
0e ₁The second pulling out by moving to the top of
The lever 80g is a horizontal axis 80g.₁The base end side
Will rise. The base end of the second pull-out lever 80g
As the side rises, the urging force of the coil spring 84j is increased.
80g protrusion while facing_FourFirst pull-out lever through
-80f is pushed upward, and the first extraction lever 80f
Is the horizontal axis 80f₃It moves upward with the center of. This
As a result, the rotating roller 84f_Five, 84g₂Up and down
While separating, the first and second extraction levers 84f, 8
4g is retracted to the outer peripheral side of the guide cylinder 80a.

When the squib 8 is pulled out from the retracted state shown in FIG. 9, the pair of slide members 80c is moved forward by advancing the cylinder rod 84d ₁ of the slide cylinder 84d. Go. By the forward movement of the slide member 80c, the crank pin 80
h ₁ moves diagonally downward toward the bottom of the first slit 80e ₁ . When the crank pin 80h ₁ moves to the lowermost part of the first slit 80e ₁ , the second extraction lever 80g becomes substantially horizontal, and the second extraction lever 80f moves upward due to the protrusion 80g ₄ . Is gradually released, and the coil spring 84
The urging force of j moves downward about the horizontal axis 80f ₃ . As a result, the first and second pull-out levers 84f and 84g are moved to the guide cylinder 8 as shown in FIG.
While moving to the front side of 0a, the squib 8 extending from the blast hole H to the guide cylinder 80a is moved to the rotary roller 8
It is sandwiched with 4f ₅ and 84g ₂ . Here, the rotating roller 84
fuse tube 8 from f _5, 84 g ₂ extends into the guide cylinder 80a side is pushed downward by the pawl 85f ₆ disposed behind the rotary roller 84f _5.

Then, by rotating the rotary roller 84g ₂ in the direction of arrow R by driving the hydraulic rotary motor 84g ₃ , the squib 8 extending into the guide cylinder 80a (or the loading hose 29) is shown. Is the guide cylinder 80a
Is pulled out from. Then, the above-mentioned depression cylinders 40b and 46a, turning cylinders 40a and 48a, rotary actuators 44 and 48, and stroke cylinder 1
9a, 23a, tilt cylinder 54, slide cylinders 50a, 84d, etc., and other hydraulic cylinders, and the hydraulic rotary motor 84g ₃ described above are related to supply control of a predetermined hydraulic pressure from a hydraulic supply device (not shown). It is supposed to be done. Then, by the hydraulic pressure supply control from the hydraulic pressure supply device, the swing cylinder 40a is expanded / contracted, the stroke cylinder 19a is expanded / contracted, the rotary actuator 44 is rotated, and the depression cylinder (not shown) is expanded / contracted, so that a boring boom is formed. By the movement of 19, the height of the rock drilling machine 17 and the horizontal direction in the horizontal plane are changed.

Further, by the hydraulic pressure supply control from the hydraulic pressure supply device, the expansion / contraction operation of the swing cylinder 40a and the depression cylinder 4 are performed.
By performing the expansion / contraction operation of 0b and the expansion / contraction operation of the stroke cylinder 23a, the height of the hose holder 21 and the horizontal direction in the horizontal plane are changed. Further, when the rotary actuator 48 is rotated by the hydraulic pressure supply control, the hose holder 21 is rotated to a predetermined angle about the axis of the rotary actuator 48, and the descending cylinder 48a and the tilt cylinder 54 are expanded and contracted. Then, the front side of the hose holder 21 is changed to be inclined downward or upward. When the hydraulic pressure supply control is performed on the slide cylinder 52a, the position of the hose holder 21 in the front-rear direction is changed.

Further, the slide system is controlled by the hydraulic pressure supply control.
When the forward / backward movement is performed on the Linda 84d, the ignition
Retracting operation of the tube drawing device 84 or drawing of the squib
A preparatory operation is performed. Also, a hydraulic rotary motor 84g₃
When a predetermined hydraulic pressure is supplied to the
The work is done. Next, the explosive loading device 10 of this embodiment is used.
For the operation procedure of the blast hole H used and the explosive filling
A description will be given with reference to the flowchart of FIG. Na
As shown in FIG. 9, the squib extraction device 84
Rolling roller 84f_Five, 84g₂First vertically separated from each other
And the second pull-out levers 84f and 84g are the guide cylinder 8
It is assumed that it is retreated to the outer peripheral side of 0a. Also the parent die
Feeding unit 62, additional die feeding unit 64 and anchor feeding unit 66
Each has multiple parent dies DM₁, Additional die DM₂
And Anco AN are stored. (Step S1) Explosive loading by traveling of the traveling carriage 13
The apparatus 10 is moved to near the bedrock where the blast is scheduled. Next
Then, the extension / contraction operation of the swing cylinder 40a, the stroke cylinder
Expansion and contraction of the da 19a, rotation of the rotary actuator 44
Due to the dynamic motion and the expansion / contraction motion of the depression cylinder (not shown)
Place the tip of the boom 19 for drilling in place and
Aim the punch 17 at the planned drilling position. Then rock drilling machine
A predetermined blast hole H is punched by driving 17. That
In addition, the other drilling positions are also drilled by the rock drilling machine 17 to make a plurality of holes.
The blast hole H is formed. (Step S2) Swivel cylinder 40a, Depression cylinder
40b, 48a, stroke cylinder 23a, rotary
Actuator, tilt cylinder 54, slide cylinder
Blast the tip of the loading boom 23 by the operation of the da 52a.
While moving to the vicinity of hole H,
The hose hose so that the axis of the guide cylinder 80a is substantially aligned.
The rudder 21 is slightly moved. (Step S3) Parent die supply port 6 of the parent die supply unit 62
One parent die DM for 2b ₁Set and add die supply section
64 additional die supply ports 64a with two additional dies DM₂To
Anko supply port of the Anko supply unit 66 while setting
Two additional dies AN are set on 66a. In addition, this
The action is automatic. (Step S4) Pair the air supply unit 60 with the supply valve 60c.
To open compressed air into the loading hose 29.
To do. As a result, foreign matter was clogged in the loading hose.
As a result, the supply of compressed air allows foreign matter to come from within the hose.
To be removed. (Step S5) Advance of the loading hose feed device 90
The loading hose 29 is inserted into the blast hole H by driving.
Ku. The tip of the loading hose 29 has a hole bottom H._LReached
Stop the forward drive of the loading hose feed device 90
To do. (Step S6) Hose holder 21 and explosives supply unit
31 to the bending state of the loading hose 29 extending between
Therefore, the slide device 33 is moved forward and backward, and the loading ho
The base 29 is straightened so as to extend in a substantially straight state. (Step S7) Forward drive of push rod feed device 68
The push rod 72 to the anchor feeding port 66a and the additional die
Feeding port 64a, uppermost parent die storage hole 62b, explosives insertion
Loading hose 2 through the mouth 29d and explosive supply port 33b
Move inside 9. As a result, the push rod 72 is
Book Parent Die DM₁2 additional dies DM₂, Anko AN
Is transferred to the blast hole H, and the parent die DM₁To
The connected squib 8 is also the parent die DM₁Blast with
It moves toward the hole H. And the hole bottom H_LTo parent da
I DM₁In front of the push rod feed device 68
Stop forward drive. (Step S8) Reverse of the loading hose feed device 90
By driving the loading hose 29 in the blast hole H,
DM₁, Additional die DM₂And Anko AN in the blast hole H
Pull out from the inside of the blast hole H while leaving it. The tip is
It is located inside the id tube 80a, at which point the loading hose fit
The backward drive of the cord device 90 is stopped. (Step S9) Reverse drive of push rod feed device 68
Push rod 72 from blast hole H to supply explosive
Port 33b, explosives insertion port 29d, parent die supply port 62b,
Do not pass through the additional die supply port 64a and the angler supply port 66a.
It is wound around the squeeze push rod retractor 70. And push
When the tip of the rod 72 passes through the anchor feed port 66a
Then, the backward drive of the push rod feed device 68 is stopped. (Step S10) Installed in the squib withdrawal device 84
Cylinder rod 84 of slide cylinder 84d
d₁To move forward. As a result, the crank pin 80h₁
Is the first slit 80e₁Diagonally downward toward the bottom of
The second pull-out lever 80g is substantially horizontal as it moves.
And the second extraction lever 80f is also coiled.
The horizontal axis 80f is generated by the urging force of the pulling 84j.₃Centered around
As the guide cylinder 8 from the blast hole H.
The squib 8 extending to 0a is the rotating roller 84f._Five,
84 g₂It is pinched by. Here, the rotating roller 84f
_Five, 84g₂From the guide tube 80a
The fire tube 8 is a claw member 85f₆Pushed down by
It And hydraulic rotary motor 84g₃Driven by
Rotating roller 84g₂By rotating in the direction of arrow R
The guide tube 8 extending inside the guide cylinder 80a is
The mouth of the blast hole H is pulled out from the id cylinder 80a.
It is in a state of hanging from. And pull out the squib
The device 84 is again rotated by the rotating roller 84f._Five, 84g₂On
The first and second pull-out levers are separated while being separated in the downward direction.
Retract the bars 84f and 84g to the outer peripheral side of the guide cylinder 80a.
I will let you. (Step S11) Moving the hose holder 21
The extension operation of D88 is performed. This allows the tamping device
82 against the mouth of the blast hole H,
The extension line is aligned with the axis of the blast hole H. (Step S12) Telescope type air cylinder 92
The expansion and contraction operation of e is repeated. As a result, the blast hole H
For the Anco-Anco AN placed on the mouth side,
The pushing operation of the female rod 92 is repeated. This thrusting motion
Repeatedly, the package surrounding sand etc.
In addition, the shape of sand or the like is deformed to close the blast hole H.

Hereinafter, from step S2 to step S12
By repeating the operation, multiple holes drilled in the rock
In each of the blast holes H, the parent die DM₁, Additional die DM
₂And Anco AN are loaded and the blast hole H is closed.
It will be blocked. Next, obtained in the above-mentioned embodiment according to the present invention.
The following is the effect of the blast hole H.
When the squib 8 extends inside the guide cylinder 80a
Is a slide installed in the squib pulling device 84.
Cylinder rod 84d of cylinder 84d₁To move forward
As a result, the second pull-out lever 80g becomes substantially horizontal.
In addition, the first extraction lever 80f also has a coil spring.
The horizontal axis 80f by the urging force of the ring 84j.₃Centered on
And moves downwards from the blast hole H to the guide cylinder 80a.
The squib 8 extending to the rotary roller 84f_Five, 84
g₂It is pinched by. Then, the hydraulic rotary motor 84
g₃Driven by the rotating roller 84g ₂In the direction of arrow R
By rotating, it extends into the guide cylinder 80a.
Automatically pull out the squib 8 from the guide cylinder 80a
And hang it from the mouth of the blast hole H.
You can

Secondly, when the squib 8 is being pulled out, the squib 8 extending from the rotating rollers 84f ₅ and 84g ₂ to the guide cylinder 80a side has the claw member 85f _6. Since it is pushed down by, slippage does not occur in the fire tube 8 that is pulled out.

[0039]

As described above, according to the first aspect of the present invention.
According to the detonator extracting device described, when the explosive loading device is arranged toward the blast hole, the loading hose is inserted into the blast hole, and the explosive to which the squib is connected is loaded into the blast hole, the blast occurs. A squib extends between the hole and the explosive loading device. When the pair of nipping rollers are moved closer to each other by the moving mechanism of the present invention, these nipping rollers guide the explosive loading device at the tip side. Hold the fire tube. Then, when the rotary motor is driven, one of the sandwiching rollers holding the squib rotates in the direction of extracting the squib, so the squib inside the loading hose is automatically withdrawn, It hangs down from the mouth of the blast hole. Therefore, since the work of pulling out the squib can be automatically performed, it is possible to significantly save labor.

Further, the squib withdrawal device according to the second aspect can obtain the effect according to the first aspect, and
When the pinching roller transmits the rotational force by the rotation motor, the pressing member presses the detonating tube against the roller surface side of the nipping roller, so that the detonating tube is not slipped and the guiding tube is securely guided. You can pull out the fire tube. Furthermore, the flue tube withdrawing device according to claim 3 can obtain the effect according to claim 1 or 2, and also performs an operation of clamping the flue tube or releasing the squeezing of the flue tube.
It can be performed by a simple mechanism.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an explosive charged in a blast hole formed in a rock according to the present invention and a closing member.

FIG. 2 is a side view showing the explosive loading device of the present invention.

FIG. 3 is a plan view showing an explosive loading device.

FIG. 4 is a front view showing the hose holder arranged at the tip of the loading boom of the explosive loading device.

5 is a cross-sectional view taken along the line VV of FIG. 5 showing a loading device that constitutes a hose holder.

6 is a cross-sectional view taken along the line VI-VI of FIG. 5, showing a tamping device that constitutes a hose holder.

FIG. 7 is a plan view showing a squib extraction device of the present invention.

FIG. 8 is a side view showing the operation of withdrawing the squib by the squib withdrawing device.

FIG. 9 is a side view showing a retracted state of the squib extraction device.

FIG. 10 is a flow chart showing a procedure of loading and tamping explosives using the explosive loading device according to the present invention.

[Explanation of symbols]

8 Fire Tube 29 Loading Hose 72 Push Rod (Explosive Transfer Means) 80 Loading Device 80a Guide Tube 84 Fire Tube Extracting Device 84d Slide Cylinder (Actuator) 84e Engaging Member 84e ₁ First Slit 84f First Extracting Lever 84f ₃ Horizontal shaft (rotating shaft) 84f ₄ , 84g ₂ Rotating roller (sandwiching roller) 84f ₆ Claw member (pressing member) 84g Second extraction lever 84g ₁ Horizontal shaft (rotating shaft) 84g ₃ Rotating motor 84h Crank member 84h ₁ Crank pin DM ₁ parent die (explosive) H blast hole

─────────────────────────────────────────────────── ─── Continuation of the front page (73) Patent holder 000149594 Omotogumi Co., Ltd. 1-11-13 Yamashita, Okayama City, Okayama Prefecture (73) Patent holder 000140292 Okumuragumi Co., Ltd. 2 Matsuzaki-cho, Abeno-ku, Osaka City, Osaka Prefecture Chome 2-2 (73) Patent Holder 000206211 Taisei Corporation 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo (73) Patent Holder 000150110 Civil engineering Takenaka Corporation 8-21 Ginza, Chuo-ku, Tokyo (73) Patent holder 000235543 Tobishima Construction Co., Ltd. 2 Sanbancho, Chiyoda-ku, Tokyo (73) Patent holder 000195971 Nishimatsu Construction Co., Ltd. Toranomon 1-20-10 Minato-ku, Tokyo (73) Patent holder 000140982 Shares Inter-company group 2-5-8 Kita-Aoyama, Minato-ku, Tokyo (73) Patent holder 000112668 AC Real Estate Co., Ltd. 5-23-15 Sendagaya, Shibuya-ku, Tokyo (72) Inventor Yoshio Nakamura 5-19-A305 Minamizawa, Higashi-Kurume City, Tokyo (72) Inventor Akira Inokuma, Asahi Ichibanchi, Ibaraki Prefecture, Civil Engineering Research Institute, Ministry of Construction (72) Inventor, Hideto Mashita Tsukuba, Ibaraki Prefecture (72) Inventor Katsuhiko Kato 2-7-18-704 Yotsuya, Urawa-shi, Saitama Prefecture (72) Shoichi Tsushima 350-25 Sugata-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture (72) 72) Inventor Isao Maruyama 1-11-20-205 Natsumi, Funabashi City, Chiba Prefecture (72) Inventor Yukio Okajima 1656-3-B2-204, Kashiwai-cho, Hanamigawa-ku, Chiba City, Chiba Prefecture (72) Osamu Hijiji Ikoma, Nara Prefecture Ichika no taipei 1-10-6 (72) Inventor Masayuki Otsuka 2-9-5 Hamadayama, Suginami-ku, Tokyo (72) Inventor Kazuhiko Yamamoto 3162-30 Okuramachi, Machida-shi, Tokyo Inventor Wataru Shida 6-3-3-603 Okusawa, Setagaya-ku, Tokyo (72) Ryoichi Sakano Ryoichi Sakano 760-11 Kamiyasumatsu, Tokorozawa, Saitama Prefecture (72) Inventor Hiroshi Sakurai 3-8 Sakurada, Washinomiya-cho, Kitakatsushika-gun, Saitama Prefecture -2- 403 (72) Inventor Tadashi Inomata 670-19 Kaminami-enokicho, Takasaki-shi, Gunma Prefecture (72) Inventor Kasato Sato 5-40-7 Sakaemachi, Tachikawa-shi, Tokyo Inventor Masayuki Suzuki Kita-Aoyama, Minato-ku, Tokyo 2-5-8 Intra-company group (72) Inventor Katsuaki Hatayama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. (56) Reference JP-A-5-239986 (JP, A) JP Hei 4-169697 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E21C 37/00 E21B 1/00-6/08

Claims (3)

(57) [Claims] 1. An explosive loading device, wherein a loading hose is inserted into a blast hole formed in a rock and explosive is loaded into the blast hole by explosive transfer means via the loading hose. Is a device for pulling out a squib extending inside the loading hose after loading the blast holes into the blasting hole. At least one pair of nipping rollers for nipping the fuse tube extending to the distal end of the device, and a rotary motor for transmitting a rotational force to the at least one nipping roller in the direction of extracting the fuse tube A flue tube withdrawal device characterized by the following. 2. A pressing member for pressing the squib to the roller surface side of the nipping roller to which the rotational force is transmitted by the rotary motor is disposed in the vicinity of the nipping roller. The detonator extraction device described. 3. A pair of nipping rollers are disposed at the tip ends of first and second extraction levers whose base ends are supported by a rotation shaft, and the first and second extraction levers rotate about the rotation shaft. By doing so, the sandwiching rollers are made to approach or separate from each other, and at the base end sides of the first and second extraction levers, the pair of sandwiching rollers are arranged in the direction of approaching or separating from each other. 3. The squib withdrawal device according to claim 1 or 2, wherein an actuator to be moved is connected in series.