JP3657687B2 - Explosive remote loading device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an explosive remote loading device for continuously and safely performing an operation of loading a medicine-packed explosive into a charge hole formed on a face by remote control.
[0002]
[Prior art]
It is known to pump medicine-packed explosives with compressed air, and prototype explosive charge machines are also manufactured and supplied to the market. This explosive charge machine is a medicine delivery means that pumps medicine packs with air between two points that are separated from each other, and it is indispensable to load workers by placing a worker at the delivery port of the medicine pack that is the shipping source. (For example, JP-A-58-120100 and 59-95400).
[0003]
That is, when carrying out the operation of loading an explosive into a charge hole using the explosive charge machine, at least the tip of the hose can be inserted into the charge hole in order to insert a flexible hose into the charge hole. According to the signal from the person in charge of the hose tip in charge of approaching the position and the person in charge of the hose in order to load the gelatinous and explosive explosive in a homogeneous state without clogging or overfilling the charge hole It is performed by at least two workers with a supply person who supplies the explosive in the form of a medicine pack to the explosive charge machine. Also, depending on the work situation, an assistant who arranges the hose is also necessary.
[0004]
When a worker approaches the charge hole, there is a risk of overhead collapse at the tunnel site, except for so-called light blasting such as an overhead open bench cut, and multiple workers such as a person in charge of the hose and a person in charge of supply are required. The fact is that labor costs have soared and are not being put into practical use.
[0005]
There is an explosive loading device disclosed in Japanese Patent Application Laid-Open No. 59-63500 as a technique for solving the above problems. In this technology, the loading hose is moved forward and backward with respect to the blasting hole by a roller driven by a hydraulic motor, and the packaging explosive is pumped through the loading hose by air, and the loading hose is detected by detecting the number of loadings of the packaging explosive. Is configured to move forward and backward. With this technique, it is possible to eliminate a worker who inserts the tip of the hose into the blast hole.
[0006]
[Problems to be solved by the invention]
As described above, simply using an explosive charge machine has a problem that labor costs may increase, and there is a risk that the person in charge of the tip may be exposed to the risk of an overhead collapse. The technique disclosed in Japanese Patent Application Laid-Open No. 59-63500 does not require a worker in charge of the tip of the loading hose, but requires a worker to supply explosives, resulting in a problem that labor costs increase.
[0007]
An object of the present invention is to provide an explosive remote loading device capable of reducing the number of workers as much as possible and improving the safety of work when carrying out the work of loading a medicine-packed explosive into a charge hole. There is to do.
[0008]
[Means for Solving the Problems]
In order to solve the above problems and safely carry out the explosive loading work in the tunnel, it is necessary to satisfy the following three conditions.
[0009]
The first condition is that when loading a medicine-packed explosive into the charge hole, the worker must be at least 3 m away from the charge hole. For this reason, it is necessary to establish a method that allows the flexible loading hose to be inserted into the charge hole from a position 3 m or more away and does not require access to the charge hole with a high risk of collapse of the top. I must. For example, when loading a charging hole from a charging cage mounted on a large wheel jumbo or an aerial work platform, the operator must be able to insert the loading hose into the charging hole even if it is not facing the charging hole. It is. In this case, even if the charge hole has a depth of about 3m to 10m, the loading hose is easily and quickly inserted into and removed from the deepest part of the charge hole in the charge cage. It is necessary to get.
[0010]
The second condition is that the supply of the medicine-packed explosive is unmanned. Therefore, unloading the medicine-packed explosive from the hopper containing the medicine-packed explosive, and loading the medicine-packed explosive into the loading hole in synchronism with the loading hole, It is necessary to supply sequentially on the same axis. In particular, it is necessary to configure the hopper and the loader so that they can be operated remotely. In addition, it is preferable that the medicine-packed explosives can be individualized and the medicine-packed explosive stock is not likely to cause a bridge or jam between the hopper and the loading machine, and can be automatically refilled from the hopper. .
[0011]
The third condition is that no excessive tension or slack is generated in the loading hose when loading the medicine-packed explosive into the charge hole. For this reason, a hose reel that can wind or unwind the hose when the loading hose becomes tight or slack with the progress of the loading operation is provided to place an unnecessary burden on the hose tip operator, It is necessary to configure so that no pulling force is applied to the medicine cage. In addition, the hose reel must have a radius of curvature that does not hinder the medicine package that is pumped through the loading hose.
[0012]
In order to satisfy the above-mentioned conditions and to solve the above-described problems, a typical explosive remote loading device according to the present invention includes a hopper that accommodates and accommodates the axes of medicine-packed explosives, and a main part built in the hopper. A scraping machine comprising a conveyor for transporting a medicine-packed explosive to the top of the hopper, and a chute for arranging the medicine-packed explosive discharged on the downstream side of the scraping machine to the loading machine. , A cutting machine for cutting out the rod-shaped inserts having plasticity by aligning the axial directions individually; Medicinal explosive sent via the chute And plastic rod-like inclusions cut by the cutting machine A pressure-feeding loading machine, and a medicine-packed explosive connected to the loading machine and pressure-fed by the loading machine And plastic rod-shaped inclusions And a hand switch for remotely controlling the driving of each part.
[0013]
In the above explosive remote loading device, the medicine-packed explosive stored in the hopper with its shaft aligned is scraped up by a scraper made up of a belt conveyor having a main part built in the hopper and transported to the top. Can be discharged. That is, by providing the belt conveyor constituting the scraper with a protrusion for supporting the medicine-packed explosive or a recess for receiving the medicine-packed explosive, the protrusion-shaped explosive is supported or accommodated for each protrusion or recess. Can be transported. Further, the discharged explosive explosive is guided by a chute disposed on the downstream side of the scraper and introduced into the loading machine, and is pumped into the loading hose by the pressurized air supplied to the loading machine. By this pumping, the medicine-packed explosive can be loaded into the charge hole formed in the face.
[0014]
In addition, plastic rod-like inserts are cut out individually by aligning the axial direction with a cutting machine, and the cut-out inserts are loaded directly into the loading machine or via a chute arranged downstream of the scraping machine. It can be fed to the machine and pumped from the loading machine, and a predetermined number of medicine-packed explosives and inclusions are sequentially pumped and loaded into the charge hole formed in the face under remote control. I can do it.
[0015]
Since the scraper and the loading machine are remotely operated by operating a hand switch, the number of workers can be reduced and safety can be improved.
[0016]
The explosive remote loading device includes a stocker having a sensor for detecting the amount of a medicine-packed explosive that is temporarily retained and the amount of the medicine-packed explosive sent via a chute and staying in the stocker. By providing an individual cutting device that individually cuts out the medicine-packed explosive and supplies it to the loading machine, the medicine-packed explosive stays in a straight line temporarily for a fixed amount and the amount of stay is detected by a sensor. The replenishment amount can be controlled.
[0017]
In addition, by using an individual cutting device connected to the downstream side of the stocker, it is possible to cut out one or a plurality of necessary amounts of medicine-packed explosives staying in the stocker. This individual cutting device is designed so as not to cause mechanical troubles and reduce the safety of explosives due to electrical energy by cutting out the encapsulated explosive that stays in the stocker with compressed air, and the loading speed of the entire system Accelerating mechanism using compressed air is provided so that the loading machine can be charged with a sufficient speed to raise the load.
[0018]
Also, the individual cutting device avoids reverse adsorption due to the “narrow part vacuum phenomenon” that occurs with the supply of compressed air and the “Karman vortex” on the back of the medicine-packed explosive and / or the compression that occurs in the individual cutting device. It has a wall with a large number of holes so that air can be easily released and smooth and reliable cutting can be performed.
[0019]
Further, in the explosive remote loading device, the plastic rod-shaped insert cut out from the cutting machine is supplied to the loading machine via a chute disposed on the downstream side of the scraping machine, and is supplied from the loading machine. You may comprise so that it may pump-feed.
[0020]
Further, in the explosive remote loading device, the hand switch has a predetermined number of optical fibers and push button switches corresponding to the respective optical fibers, and the optical fiber is moved away from the hand switch so that the light emitting unit and the light receiving unit are brought close to each other. The push button switch has a shutter that can move in a direction crossing the optical fiber, and light is emitted by the shutter according to the operation of the push button switch. It is preferable that the signal is transmitted intermittently.
[0021]
By configuring the hand switch as described above, an operation signal from the operator can be transmitted by blocking light. For this reason, compared with the case of air control, the transmission time of a signal can be shortened very much.
[0022]
The devices such as the scraper and the loading machine are controlled non-electrically by remote operation from a worker in the vicinity of the face sufficiently separated from these devices, and the medicine-like explosive is passed through the loading machine and the loading hose. It is pumped by compressed air and loaded into the charge hole. For this reason, supply of a medicine-packed explosive can be made unattended and reduced as much as possible without depending on workers.
[0023]
In the process after the loading machine, if the medicine-packed explosive is clogged in the hose in the process of being pumped through the loading hose, an unexpected danger may occur. As a safety measure for coping with the occurrence of such an unexpected situation, it is preferable to provide a safety valve for adjusting the pressure air between the tip of the loading machine or between the loading machine and the loading hose.
[0024]
Further, in order to prevent the encapsulated explosive from jumping out from the tip of the loading hose in an unforeseen state, it is preferable to provide a control unit for preventing the popping out from the viewpoint of security on the hand control panel. After the operator near the face operates the hand switch to specify the medicine-packed explosives or inclusions and the number of each, the controller controls the loading hose simply by operating the firing button. By controlling so that the medicine-packed explosive does not jump out from the tip, the medicine-packed explosive can be prevented from jumping out in an unexpected state.
[0025]
Further, in the charging system from the downstream of the loading machine of the above-mentioned explosive remote loading device to the charging hole, a hose reel driven by a motor capable of forward and reverse rotation and having a winding drum around which a loading hose is wound has a diameter of 1 m or more, A sensor that detects the slack of the loaded hose that has been fed out is arranged, and when loading a medicine-packed explosive into the charge hole, the motor is driven according to the signal from the sensor to adjust the slack of the loading hose. It is preferable to configure.
[0026]
By configuring as described above, the radius of curvature of the loading hose is 500 mm or more, the medicine-packed explosive supplied into the hose can be smoothly pumped, and the tension and slack of the loading hose are always monitored by the sensor. By doing so, the tension of the hose can be maintained in an appropriate state.
[0027]
In addition, it is preferable to provide a coupler in the middle of the loading hose so that the loading hose can be intermittently connected by a one-touch operation and easily separated at a desired position. By mounting the explosive remote loading device on a self-propelled vehicle, entry / exit into the tunnel before and after the blasting of the device can be performed quickly and flexibly.
[0028]
Moreover, it is preferable to attach the tube which has electroconductivity and rigidity at the front-end | tip of a loading hose, and distribute | circulates a medicine-packed explosive inside. In such a configuration, the operator at the end of the hose can easily insert the medicine-packed explosive by operating the tube and inserting it into the charging hole.
[0029]
By implementing the present invention, it is possible to make the following items safer, more reliable and labor-saving as a device for a tunnel excavation site by blasting.
[0030]
(1) Even after a few tens of meters from the hole, it is possible to supply a medicine-packed explosive without waiting personnel.
[0031]
(2) After drilling holes to be blasted, equipment such as hoppers and chutes that have been supplied with a sufficient amount of explosive explosives can be carried in, and the remaining explosive explosive explosives, equipment, etc. after loading are mounted on the vehicle You can enter and leave the tunnel in the state.
[0032]
(3) The loading hose can be handled relatively easily while observing the condition of the face even between the loading position at a high place and the supply position of the medicine-packed explosive at the far rear.
[0033]
(4) In addition to safety, loading work becomes easier, labor-saving and faster.
[0034]
(5) Saves labor during loading work and can work alone.
[0035]
(6) Uniform and high-speed loading without individual differences during charging.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the explosive remote loading device will be described with reference to the drawings. FIG. 1 is a diagram illustrating the overall configuration of an explosive remote loading device, FIG. 2 is a diagram illustrating the configuration of a system for supplying a medicine-packed explosive and inclusions, and FIG. 3 is a three-plane diagram illustrating the arrangement of a hopper and a cutting machine. 4 is a cross-sectional view of the hopper, FIG. 5 is a diagram for explaining the relationship between the hopper and the chute, FIG. 6 is a diagram for explaining the configuration of the straightening machine, and FIG. 7 is a longitudinal view for explaining the connection configuration of the stocker and the individual cutting device. FIG. 8 is a perspective view for explaining the configuration of the hose reel, FIG. 9 is a view for explaining a loading side for loading a medicine-packed explosive and a charge into a charge hole, and FIG. 10 is a front end portion of the loading hose. FIG. 11 is a diagram illustrating the configuration of the tube slider, FIG. 12 is a schematic diagram illustrating a signal transmission state associated with the operation of the hand switch, and FIG. 13 is a diagram illustrating the configuration of the safety valve for adjusting the pressure. FIG. 14 illustrates the work procedure for loading a medicine-packed explosive into the charge hole. FIGS. 15A and 15B are plan views for explaining the configuration of a system that includes a plurality of hoppers and simultaneously supplies medicine-packed explosives from these hoppers to a plurality of loading hoses.
[0037]
FIG. 1 shows an explosive remote loading device according to an embodiment of the present invention, which is composed of a hopper 1, a scraper 2, a cylindrical feeder 3, a straightening machine 4, a chute 5, a loading machine 6, a loading hose 7, and the like. Vehicle A equipped with this supply system, and a large wheel jumbo B equipped with a charge cage 8. A large number of medicine-packed explosives D (hereinafter referred to as “medicaments D”) accommodated in the hopper 1 are transported by the scraper 2, discharged from the hopper 1 to the chute 5, and supplied to the loading machine 6. The loading machine In a high place, the charging hole C is loaded into the charging hole C according to the operation of the hand switch 9 of the worker who has boarded the charging cage 8 at a high place through the loading hose 7 connected to the charging hose 7. After loading, round bar-shaped inclusions E made of clay are aligned by the cylindrical feeder 3, corrected by the straightening machine 4, supplied to the loading machine 6 through the chute 5, and a loading hose 7 connected to the loading machine 6. It is comprised so that it can be loaded in the charge hole C via.
[0038]
A self-propelled vehicle is used as the vehicle A, and a series of explosive supply systems are arranged on the loading platform of the vehicle A (see FIG. 2), or a plurality of explosive supply systems are arranged (see FIG. 15). ing. First, the configuration of the explosive supply system, that is, the configuration of the hopper 1 to the loading machine 6 will be described with reference to FIGS.
[0039]
The hopper 1 is configured in an inverted triangle shape with the apex arranged on the lower side, the upper part is covered with a lid 1a, and one side wall is a piece so that the medicine pack D can be easily charged into the hopper 1. It is configured as an opening door or a sliding type opening / closing door 1b. A scraper 2 is disposed on one inclined surface 1 c of the hopper 1, and the medicine pack D is discharged to the chute 5 by the scraper 2. Therefore, an opening 1d is formed at the top of the slope 1c so as to face the chute 5. In addition, the hopper 1 is comprised so that the medicine package D of about several hundred-1,000 can be accommodated.
[0040]
The scraper 2 is configured as a belt conveyor having an endless belt 2a, and is disposed inside the hopper 1 and along one inclined surface 1c of the hopper. The belt 2a is provided with a plurality of protrusions 2b for transporting the medicine package D and a support member 2c for supporting the medicine package D at a constant pitch. The scraper 2 is driven by a non-electric motor 2d such as an air motor or a hydraulic motor that is remotely operated by an operator who carries out the operation of loading the medicine package D into the charging hole C.
[0041]
That is, as the operation is started, the belt 2a of the scraper 2 moves from the bottom to the top of the hopper 1, and the medicine package D accommodated in the hopper 1 is conveyed by the protrusion 2b and shot from the opening 1d. 5 can be discharged. The belt 2a is continuously operated until a predetermined number of medicine packs D to be loaded in the medicine holes C are discharged, and stops after a predetermined number of discharges are completed.
[0042]
Between the opening 1d and the chute 5, an inversion tray 10b that is rotated by an air cylinder 10a is provided. This inversion tray 10 b is driven in synchronization with the scraper 2 and has a function of delivering the medicine package D that naturally falls from the top of the hopper 1 to the chute 5. Then, by supplying the medicine package D to the chute 5 through the inversion tray 10b, it is possible to prevent the occurrence of jam by making the axis of the medicine package D coincide with the axis of the chute 5.
[0043]
The charge hole C is loaded with a sachet D formed of a medicine package D and clay. Therefore, it is desirable that the apparatus for performing the charging operation on the charging hole C is configured so that the medicine package D and the inclusion E can be continuously loaded. For this reason, in the present embodiment, a device for supplying inclusions E is arranged in parallel with the hopper 1 for storing the medicine package D, and the inclusions E discharged from the device are opposed to the opening 1d of the hopper 1. It is configured to be able to supply to the arranged chute 5.
[0044]
The inclusion E is formed by forming plastic clay into a round bar shape having predetermined dimensions. Since these inclusions E are supplied from the molding process to the loading process in a state where a large number of the inclusions are stacked, they usually stick to each other and have a flat cross-sectional shape. Therefore, in order to remotely control the insert E and load it into the charge hole C, a cutting machine that performs the individual division and the circular cross-sectional shape is required.
[0045]
In the present embodiment, the cutting machine having the above function is constituted by a vibrating cylindrical feeder 3 and a straightening machine 4. As the cylindrical feeder 3, what is generally used as a parts feeder is used, and the inclusions E stuck to each other in a dumpling state are loosened and separated individually, and the axial direction is aligned in a line. It is possible to discharge in an aligned manner.
[0046]
Further, a conveyor 11 is provided on the upper portion of the cylindrical feeder 3, and a large number of inclusions E are placed on the conveyor 11 in advance. Further, the conveyor 11 is intermittently operated by remote operation, and the inclusion E can be sequentially supplied to the cylindrical feeder 3.
[0047]
The inclusion E discharged from the cylindrical feeder 3 is highly likely to be deformed into a flat shape, and there is no guarantee that the cross-sectional shape is circular. In particular, in a state where the cross section is deformed, there is a risk of jamming without being introduced from the chute 5 into the loading machine 6. For this reason, the straightening machine 4 is arranged continuously to the discharge port 3a of the cylindrical feeder 3, and the inclusion E is straightened by the straightening machine 4 into a round bar shape.
[0048]
The straightening machine 4 is arranged opposite to each other and is rotated by a motor (not shown), a conveyor 4b provided on the downstream side of the roller 4a and driven by a motor 4c, and between the rollers 4a and 4b. And a guide 4d provided in (see FIG. 6).
[0049]
In this embodiment, four rollers 4a in which arc-shaped grooves for forming a part of a circle are formed on the surface are used as the rollers 4a, and the rotation axes of these rollers 4a are arranged on the same plane and face each other. Thus, the inclusion E passing through the groove continuously can be formed into a circular shape.
[0050]
In the straightening machine 4 configured as described above, the inclusion E discharged from the cylindrical feeder 3 is clamped by the rollers 4a arranged to face each other, and the cross section is corrected to a circle in the process of passing through the rollers 4a. Thereafter, the inclusion E is supplied to the chute 5 through the guide 4d and the conveyor 4b.
[0051]
The chute 5 is disposed opposite to the downstream end of the scraping machine 2 and the downstream end of the conveyor 4b of the straightening machine 4, and is discharged from the medicine package D discharged from the hopper 1, the cylindrical feeder 3, and The inclusion E whose cross-sectional shape has been corrected by the correction machine 4 is guided to the loading machine 6. In particular, the medicine package D and the inclusion E can be dropped by their own weight and supplied to the loading machine 6.
[0052]
For this reason, the entire chute 5 is formed in a bowl shape, and is configured with an inclination angle of about 60 to 70 degrees at the lower position of the hopper 1. Further, the medicine package D and the inclusion E are supplied with their axial directions aligned. For this reason, the medicine package D supplied to the chute 5 falls at a speed of about 3 m per second and is introduced into the loading machine 6.
[0053]
The loading machine 6 has a function of feeding the medicine pack D and the filling E supplied from the chute 5 to the loading hole C through the loading hose 7 and loading the loading hole C into the loading hole C. As this loading machine 6, it is possible to use, for example, one configured in the same manner as that disclosed in JP-A-59-95400.
[0054]
That is, a hose 6a is connected to the loading machine 6 to supply compressed air set to a predetermined pressure, a chute 5 is connected to the upstream side, and a loading hose 7 is connected to the downstream side. ing. In addition, a valve (not shown) that is activated by the action of the weight of the medicine package D or according to the operation of the hand switch 9 is arranged inside the loading machine 6, and compressed air is supplied to the loading machine 6 as the valve is opened. It is possible to feed the medicine pack D and the inclusion E along the loading hose 7 by this compressed air.
[0055]
It is preferable to attach a safety valve 6b for adjusting the pressure air to the connection portion with the loading hose 7 on the downstream side of the loading machine 6. The safety valve 6b operates at a preset pressure and adjusts the pressure of the loading machine 6 and the loading hose 7. For example, the medicine package D is clogged in the loading hose 7, and the internal pressure of the hose 7 is reduced. When the pressure rises above the set pressure, it is possible to prevent the medicine pack D from jumping out from the tip of the loading hose 7 by releasing this pressurized air to the atmosphere and maintaining the internal pressure in a substantially constant state.
[0056]
When the processing capacity per unit time of the loading machine 6 and the processing capacity per unit time of the scraping machine 2 are equal, or when the processing capacity of the scraping machine 2 is large, by simultaneously driving both, On the other hand, it is possible to load the medicine pack D continuously. However, when the processing capacity of the scraper 2 is inferior, it is preferable to provide a stocker 13 and an individual cutting device 14 configured as shown in FIG. 7 between the chute 5 and the loading machine 6.
[0057]
The stocker 13 retains the medicine pack D supplied through the chute 5 in a straight line and stocks it, and the individual cutting device 14 cuts out and discharges the medicine pack D retained in the stocker 13.
[0058]
The stocker 13 includes a trunk portion 13a made of a straight pipe having a horseshoe-shaped or U-shaped cross section, a lid 13b covering an open portion of the trunk portion 13a, and an air cylinder disposed at the most downstream end of the stocker 13. 13c, a press fitting 13d attached to the rod of the air cylinder 13c and causing the medicine pack D to come into contact with the body 13a as the cylinder 13c operates, a flange 13e fixed to each end of the body 13a, an air The sensor 13f is attached to a position facing the cylinder 13c, and the sensor 13g is attached to a predetermined position of the body portion 13a.
[0059]
The stocker 13 is remotely operated by the operator operating the hand switch 9. That is, when the hand switch 9 is operated to drive the air cylinder 13c and release the pressing of the medicine pack D against the body 13a by the pressing fitting 13d, the medicine pack D that has been stopped moves to the individual cutting device 14, The medicine packs D aligned in order are lowered and supplied to the individual cutting device 14, and then the air cylinder 13c is restored to press the medicine pack D located on the most downstream side of the body part 13a toward the body part 13a. Stop.
[0060]
The medicine pack D staying in the body portion 13a of the stocker 13 comes into contact with the sensors 13f and 13g, and signals are generated from the sensors 13f and 13g. Therefore, it is possible to manage the number (amount) of medicine packages D staying in the stocker 13 by signals from the sensors 13f and 13g. In particular, the medicine pack D can be automatically replenished to the stocker 13 by controlling the start and stop of the scraper 2 according to the presence or absence of a signal from the sensor 13g. Therefore, it is possible to load the medicine package D based on the maximum processing capacity of the loading machine 6.
[0061]
The individual cutting device 14 cuts out the medicine packages D staying in a straight line in the stocker 13 one by one and supplies them to the loading machine 6 connected downstream. The individual cutting device 14 has a T-shaped tube 14a having a horseshoe-shaped or U-shaped cross section, and a lid 14b that covers an open portion of the T-shaped tube 14a. The T-shaped tube 14a and the lid 14b are formed so that the width direction (the direction along the bottom of the horseshoe shape) is twice to three times that of the trunk portion 13a of the stocker 13, and a large number of holes are formed over the entire surface. ing.
[0062]
The T-shaped tube 14a and the lid 14b are connected to the stocker 13 through an upper flange 14c, and are connected to the loading machine 6 through a lower flange 14d arranged at a position shifted from the upper flange 14c. A bottom portion 14e for stopping the medicine package D supplied from the stocker 13 is formed at a position facing the upper flange 14c of the T-shaped tube 14a.
[0063]
Compressed air for transferring the medicine pack D supplied from the stocker 13 and stopped by the bottom portion 14e in the lateral direction (lower flange 14e side) between the upper flange 14c and the bottom portion 14e of the T-tube 14a. A nozzle 14f for injecting the gas is connected. Further, a nozzle 14g for injecting compressed air for pumping the medicine pack D transferred in the lateral direction is connected to a position at the upper part of the T-shaped tube 14a and facing the lower flange 14d.
[0064]
The jet of compressed air from the nozzles 14f and 14g is performed by remote control by operating the hand switch 9 of the worker. That is, when the operator operates the hand switch 9 to drive the air cylinder 13c constituting the stocker 13, one medicine package D stopped by the air cylinder 13c is moved to the upper flange 14c side with respect to the individual cutting device 14. , And comes into contact with the bottom 14e to stop.
[0065]
Next, compressed air is jetted from the nozzle 14f. The medicine pack D that has come into contact with the bottom portion 14e by the injection of compressed air from the nozzle 14f moves in the lateral direction, is pumped by the compressed air injected from the nozzle 14g, is discharged from the lower flange 14d, and is supplied to the loading machine 6. . The pressure of the compressed air injected from the nozzles 14f and 14g is set to a value that allows the loading machine 6 to be charged with a sufficient speed in order to improve the loading speed of the entire system.
[0066]
The drive control of the air cylinder 13c of the stocker 13 and the injection control of the compressed air from the nozzles 14f, 14g of the individual cutting device 14 are performed by operating individual switches provided on the hand switch 9 corresponding to each device. It is possible. However, since the operation of supplying one medicine package D from the stocker 13 to the loading machine 6 via the individual cutting device 14 is a series of sequential operations, it is accompanied or generated in synchronization with the generation of the drive signal for the air cylinder 13c. Thus, it is preferable to configure an automatic control circuit for sequentially opening and closing the nozzles 14f and 14g.
[0067]
In the stocker 13 and the individual cutting device 14 configured as described above, the energy for transporting the medicine package D is applied by jetting compressed air, so-called air blow. For this reason, generation | occurrence | production of a mechanical trouble can be eliminated and the anti-explosives safety | security by an electrical energy can be improved. In addition, by forming a large number of holes in the wall constituting the main part of the individual cutting device 14, it is possible to prevent reverse suction due to the “narrow part vacuum phenomenon” generated by air blow and the “Karman vortex” of the medicine package D, and It is possible to quickly release the air pressure in the individual cutting device 6.
[0068]
The loading hose 7 has a length that can sufficiently reach the charging hole C from the installation position of the vehicle A. Therefore, when the vehicle A is moved, it is necessary to accommodate the loading hose 7 on the loading platform. For this reason, it is preferable to provide the hose reel 15 configured as shown in FIG. 8 on the loading platform of the vehicle A and wind the loading hose 7 around the hose reel 15. Further, it is preferable that the loading hose 7 is divided into the vehicle A side and the jumbo B side, and both are configured to be intermittently connected by a coupler 7a.
[0069]
The hose reel 15 is rotatably attached to a frame fixed to the loading platform of the vehicle A, and the winding drum 15a is driven by a motor 15b that can rotate forward and backward. The shaft 15c on one side of the hose reel 15 is formed in a hollow shape, and the free end is connected to the loading machine 6 through a joint such as a rotary joint and a hose 15d, and the other end located inside the winding drum 15a. Is connected to a loading hose 7.
[0070]
The hopper 1, the scraping machine 2, the cylindrical feeder 3, the straightening machine 4, the chute 5 and the loading machine 6 constitute a medicine pack D supply unit. One or a plurality of supply units can be provided as necessary, that is, corresponding to the supply amount of the medicine pack D and the medicine pack D having different specifications.
[0071]
The medicine package D has a length of 180 mm, and it is necessary for the medicine package D to smoothly pass through the inside of the hose 15 d connecting the loading hose 7 or the hose reel 15 and the loading machine 6. Therefore, the bending radius of each of the hoses 7 and 15d is set so that the minimum curvature radius is 500 mm or more, and the diameter of the winding drum 15a is set to 1000 mm.
[0072]
In addition, there is a possibility that the hose 7 may be deformed by a centrifugal force acting on the portion of the loading hose 7 disposed inside the winding drum 15a as the hose leasing 15 rotates. For this reason, the end of the shaft 15c and the winding drum 15a are connected by a tube (stainless tube) 15e having a rigidity that is three-dimensionally bent with a minimum radius of curvature set to 800 mm in advance.
[0073]
When the motor 15b is driven to rewind the loading hose 7 and the tip of the hose 7 reaches the charge hole C, it is preferable to automatically stop the motor 15b, and the slackness of the loading hose 7 is made substantially constant. It is desirable to maintain. For this reason, a plurality of sensors are provided at predetermined positions in the path of the loading hose 7, and when the loading hose 7 is detected by this sensor, it is recognized whether the hose 7 is excessively slack or too tight. When the loading hose 7 is too slack, the motor 15b is driven to wind up the hose 7, and when the loading hose 7 is too tight, the hose 7 is rewound.
[0074]
As the loading hose 7, a highly flexible synthetic rubber or synthetic resin hose is used. The loading hose 7 is preliminarily injected with clear water as a slipping aid and an antistatic agent for smoothly transporting the medicine package D.
[0075]
As shown in FIG. 10, a tube 16 having conductivity and rigidity is attached to the tip of the loading hose 7. This tube 16 is inserted into the charging hole C, and has a function of loading the medicine package D, which is pumped through the loading hose 7, into the charging hole C. For this reason, it is preferable that the inner diameter of the tube 16 is equal to the inner diameter of the loading hose 7 and the tip is formed in a blade shape so that it can easily reach the innermost part of the charging hole C. However, it does not necessarily have to be formed in a blade shape, and there is no particular problem even with a flat end.
[0076]
The tube 16 is made of FRP containing carbon in order to exert electrical conductivity, and is constructed so as to reduce the weight and exhibit strength so that the operability of workers can be improved. ing.
[0077]
A charge cage 8 is provided on the boom of the large wheel jumbo B (see FIG. 9). A tube loading / unloading device 17, a tube loading / unloading device 17 and a scraping device 8 are mounted on the charging cage 8 so that an operator can easily load the medicine pack D into the charging hole C by operating the tube 16. A hand switch 9 that controls the motor 15b of the unloader 2, the hose reel 15 or the valve of the loading machine 6 is disposed. Then, an operator who has boarded the charging cage 8 has a tube slider 18 configured as shown in FIG. 11 lowered from his / her shoulder while operating the tube 16 placed on the slider 18 toward the charging hole C. The operation of loading the medicine pack D into the charge hole C is performed by operating the switch 9.
[0078]
The tube slider 18 is a semicircular slider on which the tube 16 is placed and guides reciprocal movement in the longitudinal direction. The tube slider 18 is fixed to the tip of the slider 18 and engages with the mouth edge of the charge hole C. It has an engaging member 18a and a shoulder belt 18b. The slider 18 has a length of 3 m or more, and is configured so as not to impose an excessive burden on the worker by a light-weight and moderately rigid member (for example, FRP). A hand switch 9 is provided in the vicinity of the attachment portion of the shoulder belt 18b of the slider 18.
[0079]
In the tube slider 18 configured as described above, an operator who has boarded the charging cage 8 is suspended from the shoulder by the shoulder belt 18b and is operated by hand while aiming at the charging hole C. It is possible to engage the engaging member 18a with the mouth edge.
[0080]
The tube loading / unloading device 17 is in contact with the tube 16 attached to the tip of the loading hose 7 or the tip of the hose 7, and drives the roller 17a and the roller 17a that reciprocates the tube 16 and the loading hose 7 in the longitudinal direction. And a motor 17b. The motor 17b is driven according to the operation of the operator's hand switch 9, and reciprocally conveys the tube 16 and the loading hose 7 in response to insertion or removal of the tube 16 into the charge hole C. A counter 19 is provided at a predetermined position of the charging cage 8 or the tube slider 18 to count the medicine pack D loaded in the charging hole C.
[0081]
The hand switch 9 is disposed in the vicinity of a worker who has boarded the charging cage 8, and a control unit for controlling the entire explosive remote loading device is configured on a control panel 20 installed on the loading platform of the vehicle A. The hand switch 9 is provided with push buttons 9a corresponding to the number of devices to be operated by the operator and the number of information to be instructed, and the control panel 20 has a receiving unit 20a corresponding to each push button 9a. Is provided.
[0082]
The hand switch 9 and the control panel 20 are connected by an optical fiber 21, and the light is blocked by operating the push button 9a in a state where the light beam is transmitted through the fiber 21, and the receiving unit 20a generated along with the blocking. The operation signal is transmitted by the electrical signal.
[0083]
A shutter 9b is attached to the push button 9a of the hand switch 9, and is urged in one direction by a spring 9c. Further, the end portions of the pair of optical fibers 21 are provided at positions corresponding to the shutter 9b so as to face positions that are blocked by the shutter 9b when the push button 9a is pressed. Accordingly, the optical fiber 21 is interrupted in accordance with the pressing operation of the push button 9a, and a signal can be generated in the receiving unit 20a by this interruption.
[0084]
The control panel 20 is provided with a receiving unit 20a configured by a phototransistor that senses light and generates an electrical signal, and a light generating unit 20b configured by a laser oscillator or the like, to which an optical fiber 21 is connected. Has been. Further, the control panel 20 is provided with a storage unit 22 that stores an operation program for the explosive remote loading device in advance, a temporary storage unit 23 that temporarily stores operation information and command information, and a microprocessor 24, which are generated from the hand switch 9. A predetermined device can be controlled using a signal as a trigger.
[0085]
That is, the hand switch 9 is provided with a switching button for designating a medicine pack D and a filling E, a number designation button for designating the number of medicine packages D to be loaded into the medicine hole C, and loading of the medicine package D into the medicine hole. A start button to be started and a control release button are provided, and each push button operation is output by a light blocking signal, and control corresponding to the function of the operated push button 9a is performed. .
[0086]
Next, the procedure for loading the charge pack-shaped explosive D into the charge hole C by the explosive remote loading device configured as described above will be described with reference to FIG.
[0087]
First, as shown in FIG. 5 (a), a worker with a tube slider 18 on his / her shoulder gets on the charge cage 8 and presses the loading hose 7 (tube 16) with a roller coupling 17c so as to hold a large wheel jumbo. B is driven so that the cage 8 faces the charge hole C. At this time, the motor 15b is driven to drive the hose reel 15 to feed the loading hose 7 forward.
[0088]
When the charging cage 8 faces the charging hole C as shown in FIG. 5B, the operator operates the slider 18 to engage the engaging member 18a with the lip of the charging hole C. Next, the operator operates the hand switch 9 to drive the motor 17b of the tube loading / unloading device 17, and feeds the tube 16 so that the tube 16 is placed at the innermost portion of the charging hole C as shown in FIG. Insert until At this time, the motor 15b may be driven synchronously, but it may be allowed to freely rotate without particularly applying a brake.
[0089]
In addition, the operator operates the switching button and the number designation button of the hand switch 9 to drive the scraper 2 to discharge the medicine pack D from the hopper 1. The medicine pack D discharged from the hopper 1 by the scraper 2 is supplied to the loading machine 6 through the chute 5 and is transported to the tube 16 through the loading hose 7 as the valve of the loading machine 6 is opened. The charge hole C is loaded.
[0090]
As shown in FIG. 4D, the medicine package D is loaded into the charging hole C, and the operator operates the hand switch 9 to drive the motor 17b of the tube loading / unloading device 17 as the number of loadings increases. Then, the tube 16 is pulled back toward the mouth of the charge hole C. When excessive slack occurs in the loading hose 7 during this process, this slack is detected by a sensor, and the motor 15b is driven to wind the loading hose 7 around the hose reel 15.
[0091]
After the loading of the predetermined number of medicine packs D into the charging holes C is completed, the switch button is operated to drive the cylindrical feeder 3 and the straightening machine 4 to supply the predetermined number of inclusions E to the chute 5 and The charge hole C is loaded in the same manner as D. Thereafter, the tube 16 is detached from the charging hole C, and the state returns to the state shown in FIG.
[0092]
In the explosive remote loading device, since the device handles explosives, an electric motor that may generate sparks as a drive source for the scraper 2, the cylindrical feeder 3, the straightening device 4 or the hose reel 15, the tube loading / unloading device 17, etc. It is not preferable to use. For this reason, the motors use air motors or hydraulic motors, and other control switches use compressed air adjusted to a predetermined pressure.
[0093]
When excavating a tunnel, a large number of charge holes C are formed in the face, and a plurality of drug packages D and inclusions E are loaded in each charge hole C. For this reason, it is preferable that the loading operation is performed simultaneously on the plurality of charge holes C. In this case, as shown in FIG. 15, a plurality of supply systems are arranged in the vehicle A, and each system is operated independently, so that a plurality of charge holes C are loaded with a medicine pack D and a load E at the same time. Is possible.
[0094]
【The invention's effect】
As described above in detail, in the explosive remote loading device according to the present invention, when carrying out the operation of loading the medicine package into the charging hole, the worker can secure a position sufficiently separated from the hole. For this reason, the safety of work can be improved.
[0095]
Further, since the operator who loads the medicine pack into the charge hole can control each drive unit, the work can be performed by one person and labor can be saved.
[0096]
In addition, there is no individual difference in the loading of the medicine package into the charge hole, and uniform and high-density loading can be achieved.
[0097]
Moreover, the cycle at the time of the loading operation is shortened, and the excavation speed can be improved as a whole.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the overall configuration of an explosive remote loading device.
FIG. 2 is a diagram for explaining a configuration of a system for supplying a medicine-packed explosive and inclusions.
FIG. 3 is a three-side view illustrating the arrangement of a hopper and a cutting machine.
FIG. 4 is a cross-sectional view of a hopper.
FIG. 5 is a diagram illustrating the relationship between a hopper and a chute.
FIG. 6 is a diagram illustrating the configuration of a straightening machine.
FIG. 7 is a longitudinal sectional view for explaining a connection configuration between a stocker and an individual cutting device.
FIG. 8 is a perspective view illustrating a configuration of a hose reel.
FIG. 9 is a view for explaining a loading side for loading a medicine-packed explosive and a charge into a charge hole.
FIG. 10 is a diagram illustrating a configuration of a tip portion of a loading hose.
FIG. 11 is a diagram illustrating a configuration of a tube slider.
FIG. 12 is a schematic diagram illustrating a signal transmission state associated with the operation of the hand switch.
FIG. 13 is a diagram illustrating the configuration of a safety valve for adjusting pressure.
FIG. 14 is a diagram illustrating an operation procedure for loading a medicine-packed explosive into a charge hole.
FIG. 15 is a plan view illustrating a configuration of a system that includes a plurality of hoppers and simultaneously supplies medicine-packed explosives from these hoppers to a plurality of loading hoses.
[Explanation of symbols]
A vehicle
B Large wheel jumbo
C loading hole
D medicine bag
E inclusion
1 Hopper
2 Scraper
2a belt
2b Protrusion
3 Cylindrical feeder
4 Straightening machine
4a roller
5 Shoot
6 Loading machine
7 Loading hose
7a coupler
8 Charge cage
9 Hand switch
13 Stocker
14 Individual cutting device
15 hose reel
16 tubes
17 Tube entry / exit device
18 Tube slider
20 Control panel
21 optical fiber

Claims (8)

A hopper for aligning and containing the axes of the medicine-packed explosives, a scraper comprising a conveyor with a main part built in the hopper and transporting the medicine-packed explosives to the top of the hopper, and a downstream side of the scraper A chute that guides the packaged explosive expelled from the scraping machine to the loading machine, a cutting machine that individually cuts the plastic rod- like inclusions in the axial direction, and through the chute And a loading machine that pumps the plastic- packed explosive and plastic rod-shaped inclusions cut by the cutting machine, and a medicine-packed explosive that is connected to the loading machine and pumped by the loading machine, and An explosive remote loading device comprising: a loading hose for guiding a rod-shaped inclusion having plasticity to a charge hole; and a hand switch for remotely controlling the driving of each part.   The medicine-packed explosive that has been stored in the stocker is individually provided with a stocker that temporarily retains the medicine-packed explosive sent via the chute and detects the amount of the medicine-packed explosive retained. The explosive remote loading device according to claim 1, further comprising an individual cutting device that cuts out and supplies the loading device.   The plastic rod-like insert cut out by the cutting machine is discharged to a chute disposed downstream of the scraping machine and guided to the loading machine. The explosive remote loading device according to 2.   The cutting machine has a vibratory cylindrical feeder that supplies plastic rod-like inserts with their axes aligned, and a plurality of rollers that are arranged in succession on the vibratory cylindrical feeder and correct the outer shape of the inserts. The explosive remote loading device according to claim 1, wherein the explosive remote loading device is configured to include a straightening machine.   The explosive remote loading device according to any one of claims 1 to 4, wherein the hopper includes a single shelf having a gentle slope, and one side wall is configured to be openable and closable.   The explosive remote loading device according to any one of claims 1 to 5, wherein the loading hose has conductivity and flexibility, and a hose reel for winding the loading hose.   The explosive remote loading device according to any one of claims 1 to 6, wherein a tube having electrical conductivity and rigidity at the tip of the loading hose and through which a medicine-packed explosive flows is attached.   The hand switch has a predetermined number of optical fibers and push button switches corresponding to the respective optical fibers, and the light emitting unit and the light receiving unit are arranged close to each other at a position separated from the hand switch, and the light emitting unit and the light receiving unit The push button switch has a shutter that can move in the direction crossing the optical fiber, and the light is intermittently transmitted by the shutter according to the operation of the push button switch to transmit a signal. The explosive remote loading device according to any one of claims 1 to 7, characterized in that it is configured.

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