JP5614139B2 - Explosive loading device - Google Patents

Description

  The present invention relates to an explosive loading device for loading explosives such as packaging explosives and contents into a charge hole drilled in a face of a rock or the like in blasting work such as a tunnel.

  Conventionally, the following method has been adopted as a method for loading granular explosives such as ammonium oil explosive explosive (ANFO) and packaging explosives such as hydrous explosives into the charge holes. That is, a high place working cage is supported by a boom on a drill jumbo equipped with a drilling device, and an explosive loading device is attached to the high place working cage. The loading device is composed of a loading hose connected to the loading machine and a loading pipe connected to the loading hose, and the loading device is used to pump explosives and contents into the loading hole by compressed air. Is the method.

  As this type of explosive loading device, for example, the following device is known (see Patent Document 1). In other words, it is a device installed in a high-altitude work basket and operated by an operator who has boarded the basket. The explosive container or hopper and the explosive are received through the loading hose or pipe. A feeding device for feeding into the hole and a control device for controlling the feeding device are provided. And it is comprised so that a sending-out apparatus and a control apparatus may be divided | segmented and installed in a basket.

Japanese Patent No. 4418709

  By the way, when loading an explosive into a charge hole using a drill jumbo, the drill jumbo is moved from the retreat location to the vicinity of the facet, and power is supplied to the drive motor, lighting device, control device, etc. For this purpose, the electrical wiring is connected and the water hose used for drilling is connected. At that position, the high-altitude work cage is temporarily retracted so as not to obstruct the drilling work, and then the drilling work is performed using a drifter type drill. After that, an explosive or a container is loaded into the charge hole with a loading device for a high-altitude work cage, and an electric detonator or a detonator with a conducting tube is connected. In this state, the high-altitude work cage is returned to the storage position, the drifter type drill is stored, the electrical wiring and the water hose are separated, and the drill jumbo is moved to the retracted position. After that, detonate the detonator, detonate the explosive and blast it. Such an operation is repeated every time blasting occurs.

  In general, a drill jumbo has a plurality of drifter-type drills and 1 to 3 high-altitude work cages, all of which face the front, and the high-altitude work cage vibrates during movement. For this reason, the lower part and the rear part of the high-altitude work cage come into contact with the drifter type drill, collide with other high-altitude work cages, or come into contact with the wall surface of the tunnel.

  In the explosive loading device described in Patent Document 1, since the feeding device and the control device are installed in the high-altitude work basket, the high-altitude work basket is used for drilling for drilling and other high-altitude work. May come into contact with baskets, tunnel walls, etc. In this case, the control device installed on the high-altitude work basket is subjected to strong impacts and vibrations and may be damaged.

  Accordingly, an object of the present invention is to provide an explosive loading device capable of avoiding damage to a control device and maintaining its function for a long period of time.

In order to achieve the above object, an explosive loading device according to a first aspect of the present invention includes a drill jumbo boom used for drilling a charge hole for loading an explosive and loading the explosive into the charge hole. An explosive loading device, in which a working cage is supported and a loading machine for loading explosives into a charge hole is disposed on the working cage, and the control device for controlling the loading of the explosive is a drill jumbo. The loading machine and the control device are connected by a loading air hose and a lubricating water hose so that air and lubricating water for loading the explosive into the charge hole are supplied from the control device to the loading machine. It consists characterized Rukoto.

  In the explosive loading device of the second invention, in the first invention, the working cage includes an operation switch for operating the control device, the operation switch and the control device are connected by an air hose, and the control device is controlled by air pressure. Is configured to operate.

In the explosive loading device of the third invention, in the first or second invention, the control device is provided with a metering valve for supplying a certain amount of lubricating water.
The explosive loading device according to a fourth aspect of the present invention is characterized in that, in the first or second aspect , the control device includes a metering pump for supplying a constant amount of lubricating water.

  In the explosive loading apparatus of the present invention, a working cage is supported by a boom of a drill jumbo used for drilling a charge hole for loading an explosive, and loading the explosive into the charge hole. A loading machine for loading explosives into the charge holes is disposed on the cage. And the control apparatus which controls loading of an explosive is provided in the main body of the drill jumbo. For this reason, even when the work cage comes into contact with drills for drilling, other work cages, tunnel walls, etc., the impact and vibration are suppressed compared to the case where the control device is provided in the conventional work cage. Damage can be suppressed.

  Therefore, according to the explosive loading device of the present invention, the control device can be prevented from being damaged, and its function can be maintained over a long period of time.

Schematic explanatory drawing which shows the loading apparatus of the explosive in embodiment of this invention. Explanatory drawing which shows the air supply circuit and water supply circuit which used the fixed quantity valve. Explanatory drawing which shows the air supply circuit and water supply circuit which used the metering pump.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, a plurality of charge holes 14 are drilled at a predetermined depth at an upper position of the face 13 of the tunnel 12 formed in the rock mass 11. A drill jumbo 15 for excavating the tunnel 12 is disposed in the tunnel 12. A working cage 19 is supported at the tip of a boom 17 extending forward from the main body 16 of the drill jumbo 15 so that an operator 18 can carry in a loading operation for loading an explosive into the charge hole 14. The working cage 19 is formed in a square frame shape, and an explosive loading machine 20 is detachably supported on the frame body, and an operation switch 22 for operating a control device 21 to be described later is attached. Yes. Examples of explosives include granular explosives such as nitrate oil explosives, ammonium explosive explosives packaged with paper and plastic films, packaged hydrous explosives, packaged dynamite explosives, and the like.

  A loading port 23 is provided at the upper part of the loading machine 20, a loading hose 24 is connected to the lower part, and a loading nozzle 25 is connected to the tip of the loading hose 24. The loading hose 24 is made of a material excellent in pressure resistance and bending resistance. The loading hose 24 is formed so as to extend once downward and then extend upward in an arc shape, and extends toward the charging hole 14. Therefore, the explosives and contents inserted into the loading machine 20 can be temporarily stopped in the loading hose 24. Then, the explosive or the filling material is charged from the charging port 23 of the loading machine 20 and is temporarily stopped in the loading hose 24. Thereafter, the explosive or the filling material is charged by the air pressure from the loading hose 24 through the loading nozzle 25 to the charging hole 14. It is designed to be pumped and loaded.

  A control device 21 is disposed on the front portion of the main body 16 of the drill jumbo 15, and a loading air hose 26 and a lubricating water hose 27 are connected to the loading machine 20 supported by the work cage 19. In addition, a remote operation air hose 28 and a valve opening / closing air hose 29 are connected between the control device 21 and the operation switch 22. The operation air hose 28 is configured to send air for operating the operation switch 22 to the operation switch 22, and the valve opening / closing air hose 29 is configured to open a later-described valve in the control device 21. .

  An air compressor 30 is disposed at the center of the main body 16 of the drill jumbo 15, and an air pipe 31 is connected between the air compressor 30 and the control device 21. Then, air of a predetermined pressure (for example, 1 MPa) is supplied from the air compressor 30 to the control device 21 via the air pipe 31. One end of a water pipe 32 is connected to the control device 21, and the other end is connected to a water supply hose 33 at the rear end of the drill jumbo 15. Then, water is supplied from the water supply hose 33 to the control device 21 via the water pipe 32. Further, a power cable 34 is connected to the drill jumbo 15 at the rear end thereof, and power for power (for example, three-phase alternating current 440V) is supplied to the drill jumbo 15. The air compressor 30 and the like are driven by this electric power.

  A drilling device 37 having a drifter type drill 36 is supported on the front end portion of the drill jumbo 15 via a support arm 35. With this drill 36, a plurality of charge holes 14 are sequentially drilled in the face 13 of the rock mass 11. In addition, legs 38 are provided at the bottoms of the front end portion and the rear end portion of the drill jumbo 15 so as to be able to protrude and retract, so that the drill jumbo 15 is held in a stable state when the explosive is loaded.

Next, the configuration of the air supply circuit and the water supply circuit will be described.
First, a case where a metering valve is used for supplying lubricating water will be described. As shown in FIG. 2, a manual valve 40 is provided in the operation switch 22. In the control device 21, the other end of the air pipe 31 whose one end is connected to the air compressor 30 is connected to the pressure regulator 44 via the original valve 41 and the filter 43. The other end of a connecting pipe 45 having one end connected to the pressure regulator 44 is connected to a first valve 46, and the charging air hose 26 is connected to the first valve 46 via a connector 47. The loading air hose 26 is provided with a pressure gauge 48, and a safety valve 49 is attached to the connecting pipe 45.

  The first valve 46 and the operation switch 22 are connected by the valve opening / closing air hose 29. Then, by operating the manual valve 40 of the operation switch 22, the first valve 46 is opened based on the air pressure as an operation signal, and air with a predetermined pressure is supplied to the loading machine 20. Explosives or explosives and contents in the loading machine 20 are loaded into the charge hole 14 through the loading hose 24 and the loading nozzle 25 by the air pressure supplied to the loading machine 20. When the operation signal is not issued, the first valve 46 returns to the closed state.

  On the other hand, the water pipe 32 (water pressure is, for example, 0.1 to 1.0 MPa) is connected to the metering valve 52 (flow rate adjusting valve) via the original valve 50 and the filter 51 so that water having a desired flow rate can be supplied. It is configured. The other end of the connecting pipe 53 having one end connected to the metering valve 52 is connected to the second valve 55 via the flow meter 54, and the lubricating water hose 27 is connected to the second valve 55 via the connector 56. It is connected. The second valve 55 and the operation switch 22 are connected by the valve opening / closing air hose 29. Then, by operating the manual valve 40 of the operation switch 22, the second valve 55 is opened based on the air pressure as the operation signal, and a predetermined flow rate of lubricating water is supplied to the loading machine 20. . When the operation signal is not issued, the second valve 55 returns to the closed state.

  For the supply control of the lubricating water, a valve capable of adjusting the flow rate can be used instead of the metering valve 52. As such a valve capable of adjusting the flow rate, a needle valve, a multi-turn ball valve or the like can be used.

  Then, the case where a metering pump is used for lubricating water supply is demonstrated. In this case, the difference from the case where the metering valve 52 is used will be mainly described. As shown in FIG. 3, the water pipe 32 is connected to a metering pump 57 via an original valve 50 and a filter 51. The metering pump 57 is provided with a speed reducing mechanism 58, and can supply water with a desired flow rate. It is configured as follows. The speed reduction mechanism 58 includes a speed reducer 59 and an air motor 60 connected to the metering pump 57, and an air pipe 62 that supplies air to the air motor 60 via an adjustment valve 61. The air motor 60 is provided with an air exhaust part 63. Specifically, a Mono pump, a plunger pump, a tube pump or the like is used as the metering pump 57.

  The other end of the connecting pipe 64 having one end connected to the metering pump 57 is connected to the second valve 55 via a relief valve 65 and a flow meter 66, and the lubricating water hose 27 is connected to the second valve 55. 56 is connected. The valve opening / closing air hose 29 is connected to the second valve 55. Then, by operating the manual valve 40 of the operation switch 22, the second valve 55 is opened based on the air pressure, and a predetermined flow rate of lubricating water is supplied to the loading machine 20. With this lubricating water, the frictional force of the explosive passing through the loading hose 24 and the loading nozzle 25 can be reduced to enable smooth movement, and the generation of static electricity can be suppressed.

The operation of the explosive loading apparatus configured as described above will be described.
As shown in FIG. 1, when loading explosives in the charge hole 14 provided in the face surface 13 in the tunnel 12, the boom 17 of the drill jumbo 15 is expanded and contracted, and the work on which the operator 18 is riding is performed. The cage 19 is moved so as to face the charge hole 14. Then, the operator 18 on the work cage 19 inserts the loading nozzle 25 at the tip of the loading hose 24 into the charge hole 14. Then, the explosive or the explosive and the contents are loaded into the loading machine 20 from the charging port 23. The charge hole 14 is charged with an explosion explosive (parent die) to which a detonator is attached.

  In this state, when the operator 18 presses the manual valve 40 of the operation switch 22, as shown in FIG. 2, the air pressure acts on the first valve 46 and the second valve 55 via the valve opening / closing air hose 29, Air of a predetermined pressure (about 0.3 MPa) is sent to the loading machine 20 through the loading air hose 26. On the other hand, air pressure acts on the second valve 55 via the valve opening / closing air hose 29, and lubricating water having a predetermined pressure is sent to the loading machine 20 via the lubricating water hose 27. For this reason, explosives or explosives and contents in the loading machine 20 are quickly pumped and loaded from the loading hose 24 through the loading nozzle 25 to the charge hole 14 by air pressure and lubricating water.

  As described above, the explosive loading machine 20 is disposed on the working cage 19, while the control device 21 for controlling the loading machine 20 is disposed on the main body 16 of the drill jumbo 15. That is, the control device 21 is provided not on the work cage 19 but on the main body 16 of the drill jumbo 15 separated from the loading machine 20. For this reason, even when the work cage 19 comes into contact with the drill 36 for drilling, the other work cage 19 or the wall of the tunnel 12 in the process of loading the explosive into the charge hole 14, the impact on the control device 21 is reduced. It is possible to prevent the vibration from being directly applied, and to prevent the control device 21 from being damaged.

The effect exhibited by the above embodiment is described collectively below.
(1) In the explosive loading device of the present embodiment, a working cage 19 is supported on the boom 17 of the drill jumbo 15, and an explosive loading machine 20 is disposed on the working cage 19. On the other hand, the control device 21 for controlling the loading of the explosive is disposed on the main body 16 of the drill jumbo 15. That is, the control device 21 is disposed in a place that is separated from the loading machine 20 and is not easily damaged.

  Therefore, even when the working cage 19 comes into contact with the drill 36 for drilling, another working cage 19, the wall of the tunnel 12, etc., the impact is compared with the conventional example in which the control device 21 is provided in the working cage 19. And vibration can be suppressed, and damage can be suppressed.

Therefore, according to the explosive loading device of the present embodiment, the control device 21 can be prevented from being damaged, and its function can be maintained over a long period of time.
(2) The work cage 19 includes an operation switch 22 for operating the control device 21. The operation switch 22 and the control device 21 are connected by a valve opening / closing air hose 29 and an operation air hose 28, and the control device 21 is controlled by air pressure. Is configured to operate. For this reason, leakage can be prevented as compared with the case of using electrical wiring.
(3) The loading machine 20 and the control device 21 are connected by a loading air hose 26 and a lubricating water hose 27, and air and lubricating water for loading the explosive into the charge hole 14 are transferred from the control device 21 to the loading machine 20. It is configured to supply. Therefore, the explosive can be quickly loaded into the charge hole 14 by the air pressure, and the explosive can be smoothly moved by the lubricating water.
(4) Since the control device 21 is provided with a metering valve 52 for supplying a constant amount of lubricating water, a constant amount of lubricating water is supplied regardless of the height difference between the loading machine 20 and the control device 21. can do.
(5) Since the control device 21 is provided with a metering pump 57 for supplying a certain amount of lubricating water, the flow rate of the lubricating water supplied from the control device 21 to the loading machine 20 can be easily adjusted. Furthermore, by providing the relief valve 65, a certain amount of lubricating water can be obtained regardless of the height difference between the loading machine 20 and the control device 21.

In addition, the said embodiment can also be changed and implemented as follows.
The loading machine 20 can also be attached to the side or the rear of the working cage 19 with respect to the face surface 13.

The control device 21 can be installed on the front end portion of the main body 16 of the drill jumbo 15. Further, the outer surface of the control device 21 can be covered with a cover for preventing damage.
It is also possible to use a fiber optic cable as means for connecting the operation switch 22 and the control device 21 so that the control device 21 is activated by light. Furthermore, it is also possible to use an oil hose and operate the control device 21 by hydraulic pressure.

  When using a drill jumbo 15 having a plurality of work cages 19, each work cage 19 is equipped with a loading machine 20 and a pair of control devices 21 are mounted on the body 16 of the drill jumbo 15. Can do. When a plurality of control devices 21 are mounted, the original valve 41 and the filter 43 or the original valve 50 and the filter 51 in FIG. 2 can be shared. Further, instead of the drill jumbo 15, a work vehicle having only the work cage 19 without the support arm 35, the drifter type drill 36, and the drilling device 37 can be used.

-Granular ammonium nitrate explosives (with water absorption) that are not packaged as explosives can be used, in which case the explosives are loaded only with air and no lubricating water is used.
When using the drill jumbo 15 in which the size of the main body 16 of the drill jumbo 15 is small and the air compressor 30 cannot be built in, the shoulder-type air compressor 30 can be mounted on the rear portion of the main body 16 of the drill jumbo 15 or the upper portion of the main body 16. Alternatively, the air pipe 31 can be extended and connected to another work vehicle on which the air compressor 30 is mounted.

  DESCRIPTION OF SYMBOLS 14 ... Charge hole, 15 ... Drill jumbo, 16 ... Main body, 17 ... Boom, 19 ... Working cage, 20 ... Loading machine, 21 ... Control device, 22 ... Operation switch, 26 ... Loading air hose, 27 ... Lubrication Water hose, 28 ... Air hose for operation, 29 ... Air hose for valve opening / closing, 52 ... Metering valve, 57 ... Metering pump.

Claims (4)

A working cage is supported by a boom of a drill jumbo used for drilling a charge hole for loading an explosive, and loading the explosive into the charge hole, and the explosive is charged on the work cage. An explosive loading device in which a loading machine for loading into a hole is arranged,
The drill jumbo main body has a control device for controlling the loading of the explosive, and the loading device and the control device are connected by a loading air hose and a lubricating water hose, and air and lubrication for loading the explosive into the charge hole loading apparatus explosive characterized that you have been configured to provide the loading machine water from the control unit. The operation cage includes an operation switch for operating a control device, the operation switch and the control device are connected by an air hose, and the control device is configured to operate by air pressure. Explosive loading device as described in 1. The explosive loading device according to claim 1 or 2 , wherein the control device includes a metering valve for supplying a certain amount of lubricating water. The explosive loading device according to claim 1 or 2 , wherein the control device includes a metering pump for supplying a constant amount of lubricating water.

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