JP3378906B2 - Explosive loading 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 into a blast hole formed in a rock mass,
In particular, it relates to a device for loading explosives safely and labor-savingly.

[0002]

2. Description of the Related Art As a technique for loading explosives into a blast hole drilled in rock, there are known techniques disclosed in, for example, Japanese Utility Model Publication No. 63-39595 and Japanese Patent Publication No. 63-267900. These techniques are to 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 By the compressed air being pumped, the explosive that is pressed by the compressed air is moved through the inside of the loading hose,
It is a technology that reaches the inside of the blast hole and loads it.

[0003]

However, the conventional explosive loading technique described above has the following problems. That is, if the transfer speed of the explosive that passes through the inside of the loading hose becomes faster, there is a risk of ignition or explosion due to sliding frictional heat between the inner peripheral surface of the loading hose and the explosive or due to rapid insertion into the blast hole. Therefore, it is necessary to control the transfer speed of the explosive to be low, but it is difficult to transfer the explosive at a required low speed even if the flow rate or pressure of the compressed air is changed. Further, even if the explosive stops in the middle of the loading hose due to foreign matter mixed into the inside of the loading hose, the stop position of the explosive cannot be easily confirmed.

Therefore, various explosive loading techniques using compressed air that have been proposed so far have not been actually adopted from the viewpoint of safety, and even now, the work of loading an explosive hole by an operator is still performed. At present, there is a need for an automated explosive loading technology that improves safety and saves labor. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an explosive loading device capable of automatically loading explosives safely and with labor saving.

[0005]

According to a first aspect of the present invention, there is provided a boom which is connected to a front portion of a main body of the apparatus so as to be capable of turning down, and a boom which is disposed at a tip end portion of the boom and is drilled in rock. A guide shell rotatable toward the blast hole, a loading hose extending between the guide shell and the supply port of the explosive supply unit disposed on the apparatus body, and the explosive. An explosive loading device provided with a long push rod which is disposed on the rear side of a supply port of a supply unit and which is movable through the supply port to the tip of the inside of the loading hose. Further, in this apparatus, loading hose feed means for advancing or retracting the loading hose toward the blast hole is arranged on the guide shell. Further, in the device body, a push rod winding device that winds the long push rod by rotation of a roller, and a push rod that is wound around the push winding device is provided at a supply port of the explosive supply unit. Push rod feed means for advancing or retracting the inside of the loading hose is provided via the.

According to a second aspect of the present invention, in the first aspect of the present invention, the loading hose feed means is connected to a rotary motor capable of rotating in the forward and reverse directions and the rotary motor via a rotation transmitting member, and At least one pair of transfer rollers are provided so as to face each other with the outer circumference of the loading hose sandwiched therebetween. The invention according to claim 3 is the same as claim 1 or 2.
In the invention described above, the push rod hose feed means includes a rotation motor capable of rotating in the forward and reverse directions, a reduction gear connected to the rotation motor, the reduction gear connected to the reduction gear via a rotation transmission member, and the outer circumference of the push rod. At least a pair of transfer rollers sandwiched and opposed to each other are provided.

The invention according to claim 4 is the same as claim 1,
In the invention described in 2 or 3, in the push rod winding device, a push rod that detects the number of rotations of the roller of the device in the forward and reverse directions and measures the feed amount or the pullback amount of the push rod based on the detected value. The movement amount measuring device is installed in parallel.

[0008]

According to the explosive loading device of the first aspect of the present invention, the loading hose feed means is driven forward in a state where the guide shell is arranged to face the blast hole by the boom interception turning of the boom. The operation of inserting the loading hose into the inside of the is automatically performed. Further, with the explosive set in the supply port of the explosive supply unit, the push rod feed means is moved forward to move the push rod through the supply port to the tip of the loading hose. The blast hole is automatically loaded. Therefore, the work of loading explosives into the blast hole can be automatically performed by remote control, so that safety is improved and significant labor saving is achieved.

According to the explosive loading device of the second aspect, in addition to the effects of the first aspect, the loading hose is clamped by driving the rotary motor of the loading hose feed means in the forward direction. The transfer roller rotates forward and the loading hose is inserted into the blast hole. Further, by driving the rotary motor in the reverse direction, the transfer roller rotates in the reverse direction and the loading hose is pulled out from the blast hole. in this way,
With a simple structure, the loading hose is automatically fed or pulled back.

According to the explosive loading device of the third aspect, in addition to the effect of the first or second aspect, the push rod is clamped by driving the rotary motor of the push rod feed means in the forward direction. The transfer roller rotating forward rotates the push rod toward the supply port of the explosive supply unit and the loading hose. Further, by driving the rotary motor in the reverse direction, the transfer roller rotates in the reverse direction and the push rod is pulled out from the inside of the loading hose. In this way, the moving hose is automatically sent out or pulled back by a simple structure.

Further, in the present invention, a speed reducer is provided between the rotary motor and the transfer roller, and the moving speed of the push rod is set low. As a result, the explosive can be transferred to the blast hole at a low speed, so that it is possible to prevent the generation of sliding frictional heat in the loading hose and reduce the insertion speed into the blast hole. Further, according to the explosive loading device of the fourth aspect, the action of the first, second or third aspect can be obtained, and even if the explosive is stopped midway in the loading hose due to the mixture of foreign matter, the pushing explosive is pushed. The moving amount of the push rod is calculated from the number of revolutions of the push rod winding device detected by the rod moving amount measuring device, and the position of the tip of the push rod, that is, the position where the explosive is stopped can be easily confirmed. Because it is possible, it is possible to quickly respond to an emergency.

[0012]

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 the tip side of a loading hose 29 which serves as a transfer path for explosives to the blast hole H, and the base end 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).

Hereinafter, each structural part of the explosive loading device 10 will be described in detail with reference to FIGS. 2 to 12. A base end portion of the work floor boom 27 is connected to a boom yoke 40 fixed on the traveling carriage 13 via a horizontal shaft, and can be laid down by an expansion / contraction operation of a laying down cylinder (not shown). The work floor 25 is supported and is movable to a predetermined height and predetermined left and right positions.

The base end of the boring boom 19 is connected to the boom yoke 40 via a horizontal shaft, and the boom as a whole is bent at a predetermined angle by a telescopic operation of a pair of revolving cylinders 40a and a 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 operations of the pair of swiveling cylinders 40a and the aggression 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, a frame body 33a, which is slidably mounted in the front-rear direction on a frame 13a of a traveling carriage 13, is driven by a slide mechanism for a predetermined distance. 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 supplying section 31 is a parent die supplying section 6 arranged 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.

The additional die supply unit 64 is a hopper type storage device, and a plurality of additional dies are stored with their axes directed toward the parent die supply unit 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 sending 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.

Further, in the push rod winding device 70, the roller 7 is attached to a pair of supporting members 70a fixed on the frame body 33a.
0b is rotatably arranged, and a long push rod 72 is wound around the roller 70b a predetermined number of times and is wound. The forward rotation of the device 70 (direction of arrow A) causes the push rod 72 to rotate. Is sent to the anchor supply port 66a side, and the reverse rotation (direction of arrow B) causes the push rod 72 to move to the anchor supply port 66a.
It is pulled back from the side a and is caught.

Here, the push rod winding device 70 is connected with a push rod moving amount measuring device 71 for measuring the feed amount or the pull back amount of the push rod 72 according to the number of forward and reverse rotations of the roller 70b. There is. As a concrete device of the push rod movement amount measuring device 71, for example, a rotary encoder is attached to the rotation shaft of the roller 70b, and rotation is performed by pulse signals detected from a plurality of photoelectric elements arranged toward the rotary encoder. A non-contact type sensor such as a photoelectric type rotation sensor for measuring the direction and the number of rotations is adopted.

The data of the moving amount of the push rod 72 measured by the push rod moving amount measuring device 71 is output to a control unit (not shown). Then, in the control unit, the anchor feeding port 66 which is previously obtained as fixed data.
a, the additional die supply port 64a, the parent die supply port 62b, the explosives insertion port 29d, the explosives supply port 33b, and the movement amount data of the push rod 72 based on the length of the loading hose 29. The position of the tip of the push rod 72 can be confirmed.

Further, the push rod feed device 68 holds the outer periphery of the push rod 72 and holds the anchor feed port 66 for a predetermined length.
The operation of sending to the a side is performed, or the anchor supply port 66
This is a device for performing an operation of pulling back from the a side. That is, the push rod feeding device will be specifically described with reference to FIGS. 4 to 6. A pair of side plates 68b are arranged facing each other on the device mount 68a fixed on the frame body 33a with a predetermined distance therebetween. ing. Then, on the front side between the pair of side plates 68b, a pair of horizontal rotary shafts 6 separated in the vertical direction is provided.
While being supported by 8c, a pair of transfer rollers 68d are arranged in the up-down direction so as to sandwich the outer periphery of the push rod 72. Further, also on the rear side between the pair of side plates 68b, the push rod 7 is supported while being supported by the pair of horizontal rotating shafts 68e which are vertically separated from each other.
A pair of transfer rollers 68 sandwiching the outer circumference of
f is integrally fixed. And the lower horizontal rotary shaft 6
Sprocket 68 is attached to one end side of 8c and 68e, respectively.
g and 68h are fixed.

On the other hand, a hydraulic rotary motor 68i and a planetary gear type speed reducer 68j directly connected to the hydraulic rotary motor 68i are disposed on the device mount 68a. Although not shown, the hydraulic rotary motor 68i is provided with an oil passage port for rotating the rotating shaft in the forward direction and an oil passage port for rotating the rotating shaft in the opposite direction. A sprocket 68m is fixed to the rotary shaft of the reduction gear 68j. The sprocket 68m and the sprockets 68g and 68h are fixed.
A roller chain 68n is stretched around.

When the sprocket 68m of the speed reducer 68j rotates in the forward direction (direction of arrow R _{1 in} FIG. 5) by the forward rotation of the hydraulic rotary motor 68i, the rotational force is transmitted from the sprocket 68m to the sprockets 68g and 68h. The lower transfer roller 6 is rotated and rotates in the forward direction.
The push rod 72 is fixed to the anchor feeding portion 66 by the 8d and 68f.
Is sent out toward the supply port 66a. Further, the speed reduction device 6 is driven by the reverse rotation drive of the hydraulic rotary motor 68i.
When the sprocket 68m of 8j rotates in the reverse direction (direction of arrow R _{2 in} FIG. 5), the rotational force is transmitted from the sprocket 68m to the sprockets 68g and 68h, and the lower transfer rollers 68d and 68f rotate in the reverse direction. The push rod 72 is returned from the supply port 66a of the anchor feeding unit 66 and wound around the push rod winding device 70.

Further, 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. 7 to 9, the hose holder 21 includes a loading device 80 for loading the parent die DM ₁ , the additional die DM ₂ and the Anco AN into the blast hole H formed in the rock, and the inside of the blast hole H. The tamping device 82 that closes and the squib pulling device 84 are devices that can be moved in the width direction of the guide shell 52 by a moving mechanism 89 that includes a moving cylinder 88.

As shown in FIG. 9, the tamping device 82 is blasted by breaking the package and deforming the shape of sand or the like with respect to the Anco AN loaded in the blast hole H 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.
It is configured by a guide cylinder 80a arranged along the longitudinal direction of the guide shell 52, and a loading hose feed device 90 connected at the proximal end side of the guide cylinder 80a. The loading hose feed device 90 holds the outer periphery of the loading hose 29 and feeds the tip end of the loading hose 29 by a predetermined length to insert it into the blast hole H, or pulls it back to perform the blast hole H. It is a device that pulls out from inside.

This loading hose feed device 90 is shown in FIG.
Specifically, with reference to FIGS. 0 to 12, a pair of side plates 90b are arranged facing each other on the device mount 52a arranged on the guide shell 52 with a predetermined distance therebetween. On the front side between the pair of side plates 90b, a pair of transfer rollers 90d are arranged in the up-down direction while sandwiching the outer periphery of the loading hose 29 while being supported by a pair of horizontal rotating shafts 90c that are vertically separated from each other. There is. In addition, a pair of side plates 90
Also on the rear side between b, a pair of transfer rollers 90f is integrally fixed in the up-down direction while sandwiching the outer circumference of the loading hose 29 while being supported by a pair of horizontal rotating shafts 90e that are separated in the up-down direction. Then, sprockets 90g and 90h are fixed to one ends of the lower horizontal rotary shafts 90c and 90e, respectively.

On the other hand, a hydraulic rotary motor 90i and a planetary gear type speed reducer 90j which is directly connected to the hydraulic rotary motor 90i are disposed on the device mount 52a. Although not shown, the hydraulic rotary motor 90i is provided with an oil passage port for rotating the rotating shaft in the forward direction and an oil passage port for rotating the rotating shaft in the opposite direction. Further, a sprocket 90m is fixed to the rotation shaft of the speed reducer 90j. The sprocket 90m and the sprockets 90g and 90h are fixed.
A roller chain 90n is stretched over the roller chain.

When the sprocket 90m of the speed reducer 90j rotates in the forward direction (direction of arrow r _{1 in} FIG. 5) by the forward rotation drive of the hydraulic motor 90i, the sprocket 9
Rotational force is transmitted from 0 m to the sprockets 90 g and 90 h, and the lower transfer roller 90 d rotates in the forward direction.
By 90f, the loading hose 29 is sent out toward the supply port 66a of the anchor supply unit 66. Further, the speed reduction device 90 is driven by the reverse rotation drive of the hydraulic rotary motor 90i.
When the sprocket 90m of j rotates in the reverse direction (direction of arrow r _{2 in} FIG. 5), the rotational force is transmitted from the sprocket 90m to the sprockets 90g and 90h, and the lower transfer rollers 90d and 90f rotate in the reverse direction. The loading hose 29 is returned from the supply port 66 a of the anchor supply unit 66.

Then, the above-mentioned depression cylinders 40b, 4b
6a, turning cylinders 40a, 48a, rotary actuators 44, 48, stroke cylinders 19a, 23
a, the tilt cylinder 54, the slide cylinder 50a, and other hydraulic cylinders, and the hydraulic rotary motors 68i and 90i described above are related to supply control of a predetermined hydraulic pressure from a hydraulic supply device (not shown). It has become. Then, the expansion / contraction operation of the swing cylinder 40a and the stroke cylinder 1 are performed by the hydraulic pressure supply control from the hydraulic pressure supply device.
By performing the expansion / contraction operation of 9a, the rotary operation of the rotary actuator 44, and the expansion / contraction operation of the not-shown descending cylinder, the height of the rock drilling machine 17 and the horizontal direction in the horizontal plane are changed by the movement of the drilling boom 19. To be done.

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 hydraulic pressure of a predetermined pressure is supplied from the hydraulic pressure supply device.
In the predetermined oil passage port of the hydraulic rotary motors 68i, 90i
By being supplied, these hydraulic rotary motors 68
i, 90i generated in the forward or reverse direction
It is transmitted to the speed reducers 68j and 90j. Next, this embodiment
Of blast hole H and explosive using the explosive loading device 10 of
Refer to the flow chart in Fig. 13 for the filling operation procedure.
While explaining. Parent die supply unit 62, additional die supply unit
64 and the anchor feeder 66 each have a plurality of parent
I DM₁, Additional die DM₂And Anko AN is stored
Be present. (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) Hydraulic pressure of the loading hose feed device 90
By rotating the rotary motor 90i in the forward direction
j to r₁By rotating in the direction, the transfer roller 90
By the rotation of e and 90f, the loading hose 29 moves into the blast hole H.
Insert into. The tip of the loading hose 29 is the bottom of the hole.
H_LDrive the loading hose feed device 90
Stop moving. (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) Hydraulic rotation of the push rod feed device 68
By rotating the rotary motor 68i in the forward direction, the speed reducer 68j is moved.
R₁By rotating the transfer roller 68a,
By the rotation of 68f, the push rod 72 moves the anchor supply port 66a,
Additional die supply port 64a, uppermost parent die storage hole 62b,
The explosives insertion port 29d and the explosives supply port 33b
The filling hose 29 is moved. This allows the push rod
72 is one parent die DM₁2 additional dies DM₂,
While transferring Anco AN to the blast hole H,
I DM₁The squib 8 connected to the master die DM₁of
It moves toward the blast hole H as it moves. That
The hole bottom H_LTo parent DM₁The push rod flap
The forward drive of the feed device 68 is stopped. (Step S8) Oil of the loading hose feed device 90
The speed reduction device 9 is driven by the reverse rotation of the pressure rotary motor 90i.
0j to r₂By rotating in the direction, the transfer roller 9
Loading hose in blast hole H by reverse rotation of 0e and 90f
29, the parent die DM₁, Additional die DM₂And Anko AN
Is left in the blast hole H and is pulled out from the blast hole H.
The tip is located inside the guide cylinder 80a, and at that time
The backward drive of the loading hose feed device 90 is stopped. (Step S9) The hydraulic rotation of the push rod feed device 68
By rotating the rotary motor 68i in the reverse direction, the reduction gear 68j is moved.
R₂By rotating the transfer roller 68a,
Reverse rotation of 68f is performed. This causes the push rod 72 to explode.
Explosive supply port 33b, explosives insertion port pulled out from hole H
29d, parent die supply port 62b, additional die supply port 64a,
Push rod winding device 70 while passing through the anchor supply port 66a
Will be wrapped around. The tip of the push rod 72 is
When passing through the feeding port 66a, a push rod feeding device
The backward drive of 68 is stopped. (Step S10) Operate the squib extraction device 84.
Let As a result, it was inserted into the loading hose 29.
The squib 8 is pulled out from the inside of the loading hose 29 to be a blast hole.
It is in a state of hanging from the H opening. (Step S11) Moving the hose holder 21
The extension operation of D88 is performed. This allows the tamping device
82 to face the opening of the blast hole H,
Align the extension line 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 Anco-Anco AN, which is placed on the opening side,
The pushing operation of the charging rod 92 is repeated. This thrust
By repeating the work, the package surrounding the sand etc. breaks.
And the shape of sand etc. is deformed and the blast hole H is blocked.
It

Thereafter, by repeating the operations from step S2 to step S12, the parent die DM ₁ and the additional die DM ₁ are added to each of the plurality of blast holes H drilled in the rock.
₂ and Anco AN are loaded, and the blast hole H is closed. Next, regarding the effects obtained in the above-described embodiment according to the present invention, firstly, the following description will be made. First, a loading hose arranged in the loading device 80 in a state where the hose holder 21 is arranged to face the blast hole H. By driving the hydraulic rotary motor 90i of the feed device 90 in the forward direction,
Transfer rollers 90d, 90 holding the loading hose 29 therebetween
f rotates, whereby the insertion operation of the loading hose 29 inside the blast hole H is automatically performed. Further, the parent die D is connected to the supply ports 62b, 64a, 66a of the explosives supply unit 31.
The transfer roller 68d holding the push rod 72 by driving the hydraulic rotary motor 68i of the push rod feed device 68 in the forward direction in a state where M ₁ , the additional die DM ₂ and the ANCO AN are continuously set, 68f rotates, so that the push rod 72 moves the feed ports 62b, 64a, 66.
a, the parent die DM that passes through the loading hose 29 and reaches the blast hole H
₁ , the additional die DM ₂ and Anco AN are automatically loaded. Therefore, the explosive loading device 10 of the present embodiment is
Since the work of loading explosives into the blast hole H can be automatically performed by remote control, safety can be improved and significant labor saving can be achieved.

Secondly, a speed reducer 68j is connected to the hydraulic rotary motor 68i of the push rod feed device 68, and the transfer rollers 68d and 68f are rotated via the speed reducer 68j. The moving speed of the rod 72 is set low. As a result, the parent die DM ₁ and the additional die DM ₂ can be transferred to the blast hole H at a low speed, so that it is possible to prevent the generation of sliding frictional heat in the loading hose 29 and to move the blast hole H into the blast hole H. The insertion speed can be reduced, which greatly improves safety as compared to the conventional explosive loading technique using compressed air.

Thirdly, even if the parent die DM ₁ and the additional die DM ₂ are stopped due to foreign substances mixed in the loading hose 29, they are detected by the push rod movement amount measuring instrument 71. The amount of movement of the push rod 72 is calculated from the number of rotations of the push rod winding device 70, whereby the position of the tip portion of the push rod 72,
That is, it is possible to easily confirm the positions where the parent die DM ₁ and the additional die DM ₂ are stopped, so that it is possible to quickly respond to an emergency.

[0044]

As described above, according to the first aspect of the present invention.
The explosive loading device described above automatically moves the loading hose into the blast hole automatically by driving the loading hose feed means forward while the guide shell is placed opposite to the blast hole by the boom turning motion. When the push rod feed means is driven forward while the explosive is set in the supply port of the explosive supply unit, the push rod moves through the supply port to the tip of the loading hose. So, explosives are automatically loaded up to the blast hole.
Therefore, the work of loading explosives into the blast holes can be automatically performed by remote control, so that safety can be improved and significant labor saving can be achieved.

In addition, the explosive loading device according to the second aspect can obtain the effect according to the first aspect, and also holds the loading hose by driving the rotation motor of the loading hose feed means in the forward direction. When the transfer roller rotates forward and the loading hose is inserted into the blast hole, and the rotation motor is driven in the reverse direction, the transfer roller reversely rotates and the loading hose is pulled out from the blast hole. The sending or pulling back operation of can be performed by a simple structure.

In addition, the explosive loading device according to the third aspect can obtain the effect according to the first or second aspect, and the drive motor of the push rod feeding means is driven in the forward direction to clamp the push rod. While the transfer roller is rotating forward, the push rod moves toward the supply port of the explosive supply unit and the inside of the loading hose, and by driving the rotation motor in the reverse direction, the transport roller rotates in the reverse direction and from inside the loading hose. Since the push rod is pulled out, automatic feeding or pulling back movement of the moving hose can be performed with a simple structure.

Further, according to the present invention, since the speed reducer is provided between the rotary motor and the transfer roller and the moving speed of the push rod is set low, the explosive is transferred to the blast hole at a low speed, whereby It is possible to prevent the generation of sliding frictional heat in the loading hose and to reduce the insertion speed into the blast hole. Therefore, the safety can be greatly improved as compared with the conventional explosive loading technique using compressed air.

Further, the explosive loading device according to claim 4 is
The effect of claim 1, 2 or 3 can be obtained, and even if the explosive is stopped midway in the loading hose due to the mixture of foreign matter, the push rod winding detected by the push rod movement amount measuring device. The amount of movement of the push rod is calculated from the number of rotations of the take-up device, and the position of the tip of the push rod, that is,
Since the position where the explosive is stopped can be easily confirmed, it is possible to take an emergency response immediately.

[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 plan view showing a push rod feeding device according to the present invention.

FIG. 5 is a front view showing a push rod feeding device.

FIG. 6 is a left side view showing a push rod feeding device.

FIG. 7 is a front view showing the hose holder arranged at the tip of the loading boom of the explosive loading device.

8 is a sectional view taken along the line VIII-VIII in FIG. 7 showing a loading device that constitutes a hose holder.

9 is a sectional view taken along the line IX-IX in FIG. 7 showing a tamping device that constitutes a hose holder.

FIG. 10 is a plan view showing a loading hose feed device according to the present invention.

FIG. 11 is a front view showing a loading hose feed device.

FIG. 12 is a left side view showing the loading hose feed device.

FIG. 13 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]

13 Traveling Vehicle (Device Main Body) 23 Loading Boom (Boom) 29 Loading Hose 52 Guide Shell 66a Anco Supply Port (Supply Port of Explosive Supply Unit) 68 Push Rod Feed Device (Push Rod Feed Means) 68d, 68f, 90d, 90f Transfer Rollers 68g, 68h, 90g, 90h Sprocket (rotation transmission member) 68i, 90i Hydraulic rotary motor (rotation motor) 68n, 90n Roller chain (rotation transmission member) 68m Reduction gear 70b Roller 70 push rod winding device Push rod winding Taking device 71 Push rod movement amount measuring device 72 Push rod 90 Loading hose feeding device (loading hose feeding means)

─────────────────────────────────────────────────── ─── 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 (4)

(57) [Claims] 1. A boom connected to a front part of a main body of the apparatus so as to be able to greet and turn, and a guide shell which is disposed at a tip end part of the boom and is rotatable toward a blast hole formed in rock mass. A loading hose extending between the guide shell and the supply port of the explosive supply unit disposed on the apparatus body, and the supply hose disposed behind the supply port of the explosive supply unit. A long push rod that is movable through the mouth to the tip inside the loading hose, and on the guide shell, the loading hose that advances or retracts the loading hose toward the blast hole. A feed means is provided, and a push rod winding device that winds the long push rod by rotation of a roller and a push rod that is wound around the push winding device are provided in the device body. Inside the loading hose through the supply port of the supply unit Explosive loading device, characterized in that the push rod feed means for advancing or retracting is disposed. 2. The loading hose feeding means is connected to a rotary motor capable of rotating in the normal and reverse directions, and at least a pair of transfer rollers connected to the rotary motor via a rotation transmission member and opposed to each other with the outer circumference of the loading hose sandwiched therebetween. The explosive loading device according to claim 1, further comprising: 3. The push rod hose feed means includes a rotary motor that can rotate in forward and reverse directions, a reduction gear connected to the rotation motor, a reduction gear connected to the reduction gear via a rotation transmission member, and an outer circumference of the push rod. The explosive loading device according to claim 1 or 2, further comprising at least a pair of transfer rollers sandwiched and opposed to each other. 4. A push rod moving amount measuring device for a push rod winding device, which detects the number of rotations of a roller of the device in the forward and reverse directions and measures the feed amount or the pullback amount of the push rod based on the detected value. The explosive loading device according to claim 1, 2 or 3, wherein the containers are arranged in parallel.