Explosives loading system and face drilling machine

Abstract

To provide an explosive loading system allowing efficient loading work with high work safety and less work trouble to be realized for loading work of filler to be charged such as explosive in a loading hole drilled in a work face, and a work face drill mounted on the explosive loading system.SOLUTION: An explosive loading system 50 loading filler P to be charged including at least explosive in a loading hole H formed in a work face K comprises: a supply device 20 supplying the filler P to be charged; and a feeding device 30 feeding the charged filler P supplied from the supply device 20 in the loading hole H, wherein the feeding device 30 is provided with a feeding line 31 feeding the filler P and feeding means 35 moving the filler P in the feeding line 31, and the feeding line 31 is provided with a first line 32 receiving the filler P from the supply device 20 and a second line 33 feeding the filler P moved from the first line 32 to the loading hole H.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an explosives loading system and a face drilling machine. [Background technology]

[0002] In the construction of mountain tunnels by blasting, workers work in close proximity to the tunnel face to load explosives, including explosives and fillers (such as clay), into the explosive holes drilled in the tunnel face. This poses a major challenge to safety in terms of preventing the collapse of the tunnel face due to falling rocks and falling rocks. Furthermore, the task of loading explosives into the explosive holes involves repeated, simple steps of inserting the explosive material into the hole and poking it with a loading rod, making it a demanding and difficult task in terms of both the working environment and posture. As the frontal view of the tunnel face becomes larger and the number of explosive holes increases, issues such as a decrease in work safety, increased work discomfort, and prolonged loading times become even more pronounced. For the above reasons, there is a demand for an explosives loading system that can achieve high work safety, less work discomfort, and efficient loading work when loading explosives or other materials into a charge hole drilled in the working face.

[0003] Patent Document 1 discloses an explosive loading device that remotely loads explosives and charge materials into a charge hole. This explosive loading device includes an explosive supply device, a charge material supply device, a pressure feed device that pressure-feeds the supplied explosives or charge materials into the charge hole, and a control device that controls these various devices. The charge material supply device includes a single transport device for transporting the charge materials from the charge material storage area to the charge material drop section, one or more storage devices that store multiple charge materials that drop from the charge material drop section, and multiple drop paths that guide the charge materials that drop from the bottom ends of the one or more storage devices to the loading hose. In this explosive loading device, the explosives supplied from the explosive supply device and the charge material supplied from the charge material supply device are sent individually to one loading machine, and then individually pressure-fed to the charge hole by a pressure-feeding device via a filling hose and a filling pipe connected to the loading machine. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-113197 Summary of the Invention [Problem to be solved by the invention]

[0005] According to the explosive loading device described in Patent Document 1, explosives and filler materials can be loaded into a charge hole by remote control, which increases operational safety and reduces operational discomfort. However, because the explosives and filler materials are loaded into the charge hole by pressure feeding separately, in other words, because the explosives and filler materials cannot be loaded continuously or simultaneously, there is room for improvement in the efficiency of the loading work.

[0006] The present invention aims to provide an explosives loading system that is highly safe, less arduous, and capable of realizing efficient loading work when loading explosives or other materials into a charging hole drilled in a tunnel face, and a tunnel face drilling machine equipped with this explosives loading system. [Means for solving the problem]

[0007] In order to achieve the above object, one aspect of the explosive loading system according to the present invention comprises: An explosives loading system that loads a charge containing at least an explosive into a charge hole formed in a face, A supply device that supplies the material to be charged; a delivery device that delivers the charge supplied from the supply device to the charging hole; The delivery device includes a delivery system through which the object is delivered, and a delivery means for moving the object in the delivery system, The delivery system is characterized by comprising a first system that receives the loaded material from the supply device, and a second system that delivers the loaded material that has moved from the first system to the charging hole.

[0008] According to this aspect, the material to be loaded is supplied from a supply device to the first system of the delivery system that constitutes the delivery device, and the material to be loaded is delivered to the charging hole and loaded by the delivery means via the second system, thereby enabling efficient loading operations to be achieved. Here, "a charge containing at least an explosive" includes a charge consisting of only an explosive and a charge consisting of an explosive and a filler. For example, when the charge is formed of an explosive and a filler, application of this system makes it possible to send the explosive and the filler into the charge hole successively or simultaneously. Furthermore, when the loaded material is formed of explosives and fillers, the system may be provided with supply devices (explosive supply devices, filler supply devices) specific to the explosives and fillers, and the explosive supply devices and filler supply devices may be arranged in series along the first system, or one supply device may be provided with an explosive supply section and a filler supply section, and the explosives and fillers may be supplied to the first system from one supply device. The explosive may be one that uses a parent die (including explosive and detonator) and an additional die, or one that uses only an additional die, but in the case where a parent die and an additional die are used, for example, the explosive supply device may further include a parent die supply device and an additional die supply device in series along the first system. Also, to accommodate cases where multiple additional dies are loaded into the charge hole, multiple additional die supply devices may be provided in series along the first system.

[0009] In addition, since it is desirable that the first system, which sequentially supplies multiple charges to multiple charge holes and sends the supplied charges to the second system, has linearity, it is preferable that the first system be formed of a relatively rigid pipe. On the other hand, the second system, which sends the charges supplied from the first system to the charge holes, has a length corresponding to the distance to the charge holes provided at the face, is easy for workers to handle, and preferably has a certain degree of rigidity like the first system and can ensure linearity, it is preferable that the second system be formed of a combination of a hose and a pipe.

[0010] In another aspect of the explosive loading system according to the present invention, the supply device includes a storage container that stores a plurality of the objects to be loaded, and a supply mechanism that receives one of the objects from the storage container and supplies it to the first system; The storage container includes an upper storage section and a lower supply section that extends from below the upper storage section, aligns the plurality of objects to be loaded in a row, and supplies the objects to the supply mechanism one by one; The area of ​​the bottom surface of the upper storage section on the side of the lower supply section is formed by a spring plate that moves up and down via a rotation shaft, and the spring plate is moved up and down by a first actuator.

[0011] According to this aspect, the storage container comprises an upper storage section and a lower supply section extending from below the upper storage section to align multiple loaded objects in a row and supply the loaded objects one by one to the supply mechanism, and the area of ​​the bottom surface of the upper storage section facing the lower supply section is formed by a spring plate that moves up and down via a rotating shaft, thereby preventing the loaded objects from clogging in the lower supply section, which supplies the loaded objects one by one to the supply mechanism, and preventing the loaded objects from becoming unable to be supplied to the first system due to clogging. Here, the lower supply section has a height approximately equal to the diameter or maximum cross-sectional dimension of one of the charged objects and a linear shape extending diagonally downward, etc., so that the charged objects can be supplied one by one to the supply mechanism. For example, if the charged object is a cartridge-type water-containing explosive having a cylindrical outer shape, the lower supply section will have a height approximately equal to the diameter of the charged object, a width approximately equal to the length of the cylindrical shape, and extend diagonally downward. The upper storage section, which is large enough to store multiple charged objects at once, and the lower supply section, which supplies the charged objects one by one downward from the upper storage section, have an overall shape, for example, funnel-shaped, in side view. The first actuator that moves the spring plate up and down may be a cylinder mechanism or the like, and the spring plate can be moved up and down by the reciprocating motion of a piston rod that constitutes the cylinder mechanism.Furthermore, a motor may be applied to the first actuator, and a cam may be attached to the rotating shaft of the motor, so that the cam intermittently pushes up the spring plate as the motor rotates.

[0012] In another aspect of the explosive loading system according to the present invention, The jumping plate has a bent portion bent downward in a dogleg shape at an end portion of the region on the lower supply portion side, The bent portion prevents the object from entering the space below the splash plate when the splash plate moves upward.

[0013] According to this aspect, the jumper plate has a bent portion that bends downward in a U-shape at the end of the area on the lower supply section side, thereby preventing the loaded material from entering the space below the jumper plate.

[0014] In another aspect of the explosive loading system according to the present invention, the supply mechanism includes a second actuator and a rotating body that receives the object to be loaded through a receiving groove in the process of being rotated by the second actuator; When the receiving groove is oriented in the direction of the first system, the object to be loaded is supplied from the receiving groove to the first system.

[0015] According to this aspect, the loaded material supplied from the storage container is received by a rotating body having a receiving groove, and when the rotating body rotates and the receiving groove is oriented toward the first system, the loaded material is supplied (e.g., dropped) into the first system, making it possible to efficiently and reliably supply a predetermined amount of loaded material to the first system.

[0016] In another aspect of the explosive loading system according to the present invention, the supply device includes an outer box having an opening on the front surface, and the storage container housed inside the outer box so as to be freely accessible through the opening; a storage door for storing the object to be loaded is provided on a side surface of the storage container; a discharge door for discharging the loaded material is provided below the storage container; The storage container is pulled out from the outer box, and the object to be loaded is stored in the storage container from the side through the storage door, When the discharge door is opened, a plurality of the objects to be loaded are continuously discharged through the lower supply section.

[0017] According to this aspect, the supply device includes an outer box with an opening on the front, and a storage container housed inside the outer box so that it can freely enter and exit through the opening. The storage container has a storage door on its side for storing the objects to be loaded. This allows multiple objects to be quickly stored in an aligned manner from the side of the storage container. Furthermore, there is no risk of damage to the objects, which is a concern when, for example, the objects are dropped into the storage container from above. Furthermore, a discharge door for discharging the loaded materials is provided below the storage container, and when the discharge door is opened, multiple loaded materials are continuously discharged through the lower supply section, so that when multiple loaded materials stored in the storage container need to be removed, all of the loaded materials can be removed quickly.

[0018] In another aspect of the explosive loading system according to the present invention, The container is characterized in that transparent plates are provided on a portion of the front surface and a portion of the side surface, and the state of the loaded material can be easily seen through the transparent plates.

[0019] According to this embodiment, transparent plates are provided on part of the front and part of the side of the storage container, and the storage state of the loaded items can be easily seen through the transparent plates, making it possible to visually check whether multiple loaded items are stored in an aligned manner, or whether some of the loaded items are clogged in the middle of the storage container. For example, if the overall shape from the upper storage section to the lower supply section is funnel-shaped as described above, a transparent plate along the funnel shape is provided on the front of the storage container, making it possible to check (visually confirm) the state of all the objects stored in the storage container from the outside. Here, a configuration in which transparent plates are provided on both the left and right side surfaces of the storage container is preferred. In addition, a transparent plate is provided, for example, below the front surface of the storage container, and the rotating body that forms the supply mechanism inside the storage container can be seen through the transparent plate, so that it is possible to check from the brace through the transparent plate whether the loaded material is correctly received in the opening of the rotating body.

[0020] Another aspect of the explosive loading system according to the present invention is A check valve or a ball valve is provided between the first system and the second system.

[0021] According to this aspect, by providing a check valve or a ball valve between the first system and the second system, the material to be loaded that has been sent to the second system can be prevented from returning to the first system. Here, the ball valve has a rotating body with a through hole, and is controlled so that the through hole faces the passages of the first and second systems when the loaded material is passing through, and is positioned so that the through hole does not face the passages when the loaded material is being sent to the charging hole. On the other hand, check valves include not only general check valves with an opening diameter narrowed in the discharge direction (from the first system to the second system), but also on-off valves in which the opening is automatically controlled to narrow or close when the loaded material passes through the check valve.

[0022] In another aspect of the explosive loading system according to the present invention, The delivery means includes a first delivery means for moving the charged material from the first system to an intermediate position of the second system, and a second delivery means for moving the charged material from an intermediate position of the second system to the charging hole, the first delivery means is either a first pressure feeder or a unit consisting of a cylinder mechanism and a push rod that is reciprocated in the first system by the cylinder mechanism, The second delivery means is a second pressure feeder.

[0023] According to this aspect, by providing a first delivery means for moving the loaded material from the first system to an intermediate position in the second system, and a second delivery means for moving the loaded material from the second system to the charging hole, even if the total length of the first system and the second system is long, the loaded material can be smoothly moved in the first system and the second system and delivered to the charging hole. When the first delivery means is a first pump such as a compressor, the material supplied to the first system is pumped by the first pump to an intermediate position in the second system via a ball valve or the like. At this time, it is preferable that the pumping force of the first pump is set so that the material is pumped to a predetermined position in the second system by the weight of the material and the kinetic friction between the material and the first and second systems. Alternatively, a stopper may be provided at a predetermined position in the second system so that it can move in and out freely, and the stopper may extend into the inside of the second system before the first pumping machine pumps the loaded material, so that the loaded material pumped by the first pumping machine is stopped at a predetermined position in the second system by the stopper.

[0024] On the other hand, if the first feeding means is a unit consisting of a cylinder mechanism and a push rod that reciprocates in the first system using this cylinder mechanism, the cylinder mechanism is driven to use the push rod to feed the loaded material to a predetermined position in the second system, and then the cylinder mechanism is driven to return the push rod to its original position (a position upstream of the supply device in the first system in the pushing direction), thereby creating a state ready for pushing in the next loaded material.

[0025] The second compressor that sends the charged material to the charging hole in the second system is formed by, for example, a compressor, etc. Here, when the second compressor supplies compressed air to the second system, lubricating water is simultaneously supplied to the second system, and the charged material and lubricating water are sent to the charging hole by the compressed air.

[0026] In another aspect of the explosive loading system according to the present invention, The first system is characterized by being equipped with a weighing scale that measures the weight of the loaded material supplied from the supply device, or a limit switch that detects that the loaded material has been supplied to the rotating body.

[0027] According to this aspect, the first system is equipped with a weighing scale that measures the weight of the loaded material supplied from the supply device, or a limit switch that detects that the loaded material has been supplied to the rotating body, thereby ensuring that one loaded material is supplied from the storage container to the first system or the rotating body. Furthermore, if a weighing scale is provided, it is possible to further ensure that a predetermined amount of explosives is being supplied to the first system. For example, the number (or weight) of explosives to be loaded into one charging hole varies depending on the tunnel being constructed or the explosives used. Therefore, by setting the weight of the explosives to be loaded on the weighing scale and measuring the weight of the explosives supplied to the first system with the weighing scale, the correct amount of explosives can be loaded into the charging hole via the first and second systems. Here, if the weight of the explosives measured by the weighing scale differs from the input value, an alarm can be sounded from the weighing scale, allowing the amount of explosives supplied to the first system to be confirmed and the correct amount of explosives to be supplied to the first system as necessary.

[0028] Further, one aspect of the face drilling machine according to the present invention is A trolley and a boom attached to the carriage so as to be able to rotate freely and rise and fall freely, The supply device constituting the explosive loading system is mounted on the carriage, A part or all of the second system is mounted on the boom.

[0029] According to this aspect, by using a face drilling machine equipped with the explosive loading system of the present invention, the tip of the second system is positioned at the charge hole to be loaded while moving and extending the boom, and the explosive loading system is activated to load the material into the charge hole, thereby realizing remote work with workers away from the face and eliminating the need for workers to work close to the face, thereby improving work safety and eliminating work discomfort. Furthermore, by using a face drilling machine equipped with an explosive loading system, efficient loading work can be achieved. Here, the face drilling rig may be equipped with one or more booms, with a man cage attached to the tip of the boom, and a worker riding in the man cage may position the tip of the second line of the explosive loading system in the charge hole. Even in this case, the worker riding in the man cage can position the tip of the loading pipe, etc., that constitutes the second line in the charge hole while positioned, for example, 2 m or more away from the face (there is evidence that being within 1.5 m of the face is highly dangerous), thereby ensuring the safety of the worker's work. In addition to this embodiment, the supply device that constitutes the explosive loading system may also be mounted on a transport vehicle that does not have a boom.

[0030] Another aspect of the face drilling machine according to the present invention is The boom is further characterized in that at least one of a drilling system and a charge hole cleaning system is mounted thereon.

[0031] According to this aspect, by further mounting at least one of a drilling system and a charge hole cleaning system on the boom, the drilling of charge holes in the face, cleaning of the charge holes, and loading of explosives, etc. into the cleaned charge holes can be performed continuously with a single boom, making it possible to efficiently perform a series of tasks from creating charge holes to loading of explosives, etc. Here, the drilling drifter that constitutes the drilling system, the cleaning rod that constitutes the explosive hole cleaning system, and the second system (loading hose) that constitutes the explosive loading system are attached around the boom, and after the boom is positioned at the position of the explosive hole at the face, the boom (rotating unit) can be rotated to position either the drilling drifter, cleaning rod, or the second system loading hose at the specified position, and the desired work can be performed.

[0032] For example, after creating a charging hole of a predetermined length using a drilling drifter, the boom's rotation unit is rotated to position the cleaning rod in the charging hole, the charging hole is cleaned, and then the boom's rotation unit is rotated to position the loading hose, and the material to be charged can be continuously loaded into the charging hole. [Effects of the Invention]

[0033] According to the explosive loading system and face drilling machine of the present invention, the work of loading explosives or other materials into a charging hole drilled in the face can be carried out with high work safety, with less work discomfort, and with efficient loading work. [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a diagram showing the overall configuration of an example of a face drilling machine according to an embodiment, and also shows the overall configuration of an example of an explosive loading system according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing the configuration around the rotating unit at the tip of the boom of the face drilling machine. [Figure 3] FIG. 1 is a front view of an example of three supply devices arranged side by side. [Figure 4] 4 is a view seen from the arrow IV in FIG. 3, and is a plan view of an example of three supply devices arranged side by side, showing a state in which a storage container constituting one of the supply devices protrudes from an outer box and a storage door on the side of the storage container is open. [Figure 5] 4 is a view taken along the arrows VV in FIG. 3, showing the inside of the supply device as seen from the side. FIG. [Figure 6]FIG. 6 is a view corresponding to FIG. 5, showing a state in which the storage container protrudes from the outer box. [Figure 7] FIG. 2 is a diagram illustrating an example of a hardware configuration of a control device. [Figure 8] FIG. 2 is a diagram illustrating an example of a functional configuration of a control device. [Figure 9] FIG. 10 is a diagram showing a state in which the object to be loaded is supplied from the supply device to the first system. [Figure 10] FIG. 10 is a diagram showing a state in which the object to be loaded has been sent to an intermediate position in the second system. [Figure 11] This is a diagram showing the state in which the charged material is being sent out from the second system to the charging hole. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, an explosives loading system and a face drilling machine according to an embodiment will be described with reference to the accompanying drawings. In this specification and the drawings, substantially identical components are designated by the same reference numerals, and redundant description may be omitted.

[0036] [Explosive loading system and face drilling machine according to the embodiment] An example of an explosive loading system and a face drilling machine according to an embodiment will be described with reference to Figures 1 to 11. Here, Figure 1 is a diagram showing the overall configuration of an example of a face drilling machine according to an embodiment, and is also a diagram showing the overall configuration of an example of an explosive loading system according to an embodiment. Also, Figure 2 is a perspective view showing the configuration around a rotation unit at the tip of a boom of the face drilling machine.

[0037] Figure 1 shows a situation in which multiple charging holes H are formed at a tunnel face K, which is constructed in the process of constructing a mountain tunnel by drilling bedrock G through blasting, and a tunnel face drilling machine 100 is positioned on the tunnel entrance side of the tunnel face K, and a charging material P (see Figures 5 and 6) is being loaded into one of the charging holes H.

[0038] The face drilling machine 100 comprises a carriage 10 and a plurality of booms 14, 16 attached to the carriage 10 so as to be able to rotate and rise and fall freely (in the X1 direction and the X3 direction), and an explosive loading system 50 is mounted on the carriage 10. Although not shown in the figures, the explosive loading system 50 may be mounted on a transport vehicle in addition to the carriage 10 constituting the face drilling machine 100.

[0039] The carriage 10 has an operator cabin 12, which houses a control device 40 that constitutes an explosives loading system 50.

[0040] One of the booms 14 attached to the cart 10 is a cage boom with a man cage 15 at its tip that can rotate freely and can also extend and retract in the axial direction X4.The man cage 15 can always maintain a horizontal position as the cage boom 14 rises and falls in the X3 direction, allowing a worker on board the man cage 15 to perform various tasks and give instructions to the operator.

[0041] On the other hand, the other boom 16 attached to the carriage 10 is a work boom for carrying out explosive loading work, etc., and is extendable in the axial direction X2, and has a rotation unit 17 at its tip.

[0042] As shown in Figure 2, around the rotation unit 17, in addition to the loading pipe 33c that constitutes the explosive loading system 50, a drilling rod 39A that constitutes a drilling system (not shown) and a cleaning rod 39B that constitutes a charge hole cleaning system (not shown) are attached.

[0043] By rotating the rotary unit 17 in the X10 direction, the selected pipe or rod can be put into operation. For example, first, the drilling rod 39A is selected, and the drilling system is driven to create a charge hole H at the working face K. Next, the rotary unit 17 is rotated to position the cleaning rod 39B in the charge hole H, and the cleaning rod 39B is inserted into the charge hole H, and the charge hole cleaning system is driven. The charge hole H is cleaned by spraying high-pressure air or high-pressure water from the cleaning rod 39B (or by applying a cleaning tool on a screw). Thereafter, the rotary unit 17 is rotated to position the loading pipe 33c in the charge hole H, and the loading pipe 33c is inserted into the charge hole H as shown in FIG. 1, and a charge containing an explosive is loaded into the charge hole H.

[0044] In this way, by arranging multiple types of work rods and pipes in the rotary unit 17, it becomes possible to continuously perform multiple types of work with one boom 16. Here, although one work boom 16 is shown in Fig. 1, multiple work booms may be provided on the carriage 10, or the multiple work booms may be equipped with rods and pipes specific to each type of work (drilling work, cleaning work, loading work).

[0045] The explosive loading system 50 mounted on the carriage 10 constituting the face drilling machine 100 has a supply device 20 that supplies the charged material, and a delivery device 30 that delivers the charged material supplied from the supply device 20 to the charging hole H. Furthermore, the explosive loading system 50 in the illustrated example has a control device 40 that controls the supply device 20 and the delivery device 30. Here, the explosive loading system may have a configuration that does not include a control device.

[0046] On the carriage 10, three supply devices 20A to 20C, each containing a plurality of charges, are arranged in parallel in series above and along a first system 32 constituting the delivery device 30. The charges include at least explosives, and are available in a form having only explosives, and a form having both explosives and charge material (clay (filler) having a cross-sectional dimension sufficient to block the charge hole H). Here, the three supply devices 20A to 20C may be configured to supply a main die, an additional die, and charge material to the first system 32, respectively. The charges include, for example, a cartridge-type water-containing explosive with a cartridge diameter of approximately 25 mm to 30 mm and a length of approximately 200 mm, and a detonator.

[0047] The plurality of supply devices 20A, 20B, 20C arranged in series each supply materials to be loaded into the plurality of charging holes H to the first system 32 in the Y1 direction to the Y3 direction.

[0048] For example, the loaded material P is supplied from supply device 20A, and when the loaded material P contained in supply device 20A falls into first system 32, the loaded material P is then supplied from supply device 20B, and when the loaded material P contained in supply device 20B falls into first system 32, the loaded material is finally supplied from supply device 20C.

[0049] A drive command signal is sent from the control device 40 to the supply device 20, and the supply device 20 is driven to supply the objects P to the first system 32. The specific configuration of this supply device 20 will be described in detail below.

[0050] Returning to Figure 1, the delivery device 30 has a delivery system 31 that forms a route for delivering the loaded material P supplied from the supply device 20, a ball valve 34 interposed in the delivery system 31, and two types of delivery means, a first delivery means 35 and a second delivery means 36.

[0051] The delivery system 31 has a first system 32 that receives the charge material P from the supply device 20 and a second system 33 that delivers the charge material P that has moved from the first system 32 to the charge hole H.

[0052] The first system 32 is a route that receives the material P to be loaded from each of the supply devices 20A to 20D arranged in series and sends it out to the second system 33, so it requires linearity, and therefore it is preferable that it be formed by a loading pipe made of a relatively rigid steel pipe, hard resin, etc.

[0053] On the other hand, the second system 33 has a relatively long length from the boundary with the first system 32 to the charging hole H of the face K, and preferably has good handling properties for workers at its intermediate position, and further, it is preferable that the tip region for insertion into the charging hole H has linearity. Therefore, it is preferable that the side connected to the first system 32 has a loading pipe 33a that can ensure linearity, the intermediate position has a loading hose 33b that has good handling properties, and the tip side of the charging hole H has a unit structure that has a loading pipe 33c. The loading hose 33b is made of a material that has both a certain degree of rigidity and deformability, such as a relatively hard resin or a bellows tube.

[0054] A ball valve 34 is provided at the boundary between the first system 32 and the second system 33. A first delivery means 35 is provided on the upstream side of the first system 32 in the delivery direction (the tunnel entrance side), and after each object P to be charged is supplied to the first system 32, a drive command signal is sent from the control device 40 to the first delivery means 35, and the first delivery means 35 is driven to deliver the object P to be charged in the Y5 direction to a midpoint in the second system 33 (for example, a midpoint in the charging pipe 33a).

[0055] The material P that has passed through the ball valve 34 and been sent to an intermediate position in the second system 33 is stopped at this intermediate position, and is prevented by the ball valve 34 from returning to the first system 32 (reverse running).

[0056] The ball valve 34 is a control valve having a rotor 34a with a through hole 34b, and when a drive command signal is sent from the control device 40 after the material P to be charged has been sent to an intermediate position in the second system 33, the rotor 34a rotates, and the through hole 34b is released from communication with the first system 32 and the second system 33, and is controlled to be closed. Note that the control valve may be a check valve whose opening is freely adjustable or a valve with a hinge structure, in addition to the ball valve shown in the figure, and may be of a type that automatically closes after the material P to be charged has been sent from the first system 32 to the second system 33, or the like.

[0057] After controlling the ball valve 34 to be closed, a drive command signal is sent from the control device 40 to the second delivery means 36 connected to the loading pipe 33a, and the second delivery means 36 is driven to continuously deliver the loading material P to the loading hose 33b and the loading pipe 33c in the Y8 and Y9 directions, and then the material P is loaded into the loading hole H.

[0058] Here, the first sending means 35 that sends out the material P to be loaded in the first system 32 is a first pressure feeder formed by a compressor, and the material P is pressure-fed by compressed air supplied from the first pressure feeder 35 to the first system 32. Note that the first sending means 35 may be configured by a unit (not shown) formed by a cylinder mechanism and a pushing rod that reciprocates in the first system 32 by this cylinder mechanism, in addition to the compressor in the illustrated example.

[0059] On the other hand, the second delivery means 36 that delivers the charged material P in the second system 33 is also a second pump formed by a compressor. A flow path that connects the second pump 36 and the second system 33 is connected to a flow path that leads to a water tank 37, and lubricating water supplied from the water tank 37 in the Y6 direction is supplied to the second system 33 by compressed air that is pumped from the second pump 36 in the Y7 direction, and the charged material P and lubricating water are pumped to the charging hole H by the compressed air.

[0060] Next, the configuration of the supply device 20 will be described with reference to FIGS. 3 to 6. Here, FIG. 3 is a front view of an example of three supply devices arranged side by side. Also, FIG. 4 is a view taken along the arrow IV in FIG. 3, which is a plan view of an example of three supply devices arranged side by side, showing a state in which a storage container constituting one of the supply devices protrudes from an outer box and a storage door on the side of the storage container is open. FIG. 5 is a view taken along the arrow VV in FIG. 3, which is a side view of the inside of the supply device. Furthermore, FIG. 6 is a view corresponding to FIG. 5, which shows a state in which the storage container protrudes from the outer box. Here, FIG. 5 does not show the numerous load objects P stored in the storage container 22.

[0061] The illustrated supply device 20 has an outer box 21 with an opening 21b on the front surface 21a, a storage container 22 housed inside the outer box 21 and able to freely enter and exit through the opening 21b, and a supply mechanism 23 that supplies one loaded item P received from the storage container 22 to the first system 32.

[0062] In the illustrated example, the three supply devices 20A, 20B, and 20C arranged side by side all have the same structure, and a first system 32 is disposed below each supply device 20.

[0063] As shown in Figure 4, the storage container 22 slides forward in the Z1 direction from the outer box 21 and protrudes outward. When the storage door 22d, which is attached to the side of the storage container 22 via a hinge and can be opened and closed freely, opens in the Z2 direction, the inside of the storage container 22 is opened and multiple loaded items P can be aligned and stacked from the side of the storage container 22.

[0064] As shown in Fig. 3, a discharge door 22b is provided below the front surface 21a of the outer box 21 so as to be able to open and close freely via a hinge, and almost the entire area of ​​the discharge door 22b is formed by a transparent plate 22e, through which the interior can be seen. When the storage container 22 is housed in the outer box 21, the front surface 22a of the storage container 22 is aligned on top of the discharge door 22b, and both are locked with a lock key 22h. To slide the storage container 22 out of the outer box 21, the lock key 22h is released and the storage container 22 is pulled forward.

[0065] As shown in Figure 6, a slide rail 22g incorporating multiple wheels is provided at the upper end of the storage container 22, and a slide rail 21c incorporating multiple wheels is also provided above the outer box 21. When both slide rails 21c and 22g are aligned and the wheels on both rotate, the storage container 22 is pulled forward in the Z1 direction from the outer box 21, and when pushed in the opposite direction, it is stored in the outer box 21.

[0066] As shown in Figures 5 and 6, the storage container 22 includes an upper storage section 22A that stores a large number of loaded items P in an aligned and stacked state, and a lower supply section 22B that extends from below the upper storage section 22A, aligns the multiple loaded items P in a row, and supplies the loaded items P one by one to the supply mechanism 23.

[0067] 5 and 6, the upper storage section 22A, which is large enough to store a large number of materials P at once, and the lower supply section 22B, which supplies the materials P downward one by one from the upper storage section 22A, have an overall funnel-like shape in side view. The lower supply section 22B extends diagonally downward from one end (the front end in the illustrated example) of the upper storage section 22A, bends, and extends vertically downward.

[0068] The vertical height of the lower supply section 22B is approximately the same as the cross-sectional diameter of the cylindrical object P, and this height and linearity allow the object P to be gently fed one by one in the Z7 direction and supplied to the supply mechanism 23 located below. This prevents the object P from being damaged by sudden and violent feeding.

[0069] 5, one end of bottom surface 24 of upper storage section 22A is pivot end 24d, and pivot end 24d is provided with pivot shaft 24e. A piston rod of first actuator 25 formed by a cylinder mechanism is attached to the underside of bottom surface 24 at a midpoint. Furthermore, an end of region 24a on the lower supply section side of bottom surface 24 is provided with bent portion 24b bent in a dogleg shape.

[0070] By operating the first actuator 25 and reciprocating the piston rod diagonally up and down in the Z5 direction, the bottom surface 24 rotates slightly up and down around the rotation axis 24e, and this up and down rotation causes the bottom surface 24 to reciprocate diagonally up and down in the Z6 direction.

[0071] By this reciprocating movement of the bottom surface 24, even when a large number of objects P are tightly packed inside the upper storage section 22A as shown in Figure 6, the reciprocating movement of the bottom surface 24 can release the tightly fixed state of the multiple objects P, preventing the multiple objects P from getting stuck inside the upper storage section 22A and preventing them from moving, while ensuring the movement of the objects P to the lower supply section 22B.

[0072] In this way, the bottom surface 24 moves back and forth in the vertical direction around the pivot axis 24e, and this action pushes up the multiple load items P from below, releasing them from their tightly fixed state, so it can also be called a spring board.

[0073] Furthermore, the bent portion 24b bent in a dogleg shape is provided at the end of the region 24a on the lower supply section side of the bottom surface 24, which prevents some of the materials P from entering the space 24c below the bottom surface 24 when the bottom surface 24 is raised upward. This prevents the materials P from entering the space 24c below and hindering the reciprocating movement of the bottom surface 24.

[0074] As shown in FIG. 5, in a state where the storage container 22 is housed inside the outer box 21, the object P to be loaded is supplied from the storage container 22 to the supply mechanism 23 located below it.

[0075] The supply mechanism 23 has a second actuator 26 formed by a motor, and a rotating body 27 rotated by the second actuator 26. The rotating body 27 is provided with a receiving groove 27a, and when the receiving groove 27a is aligned with the lower supply section 22B, one object P to be loaded is received by the receiving groove 27a.

[0076] The rotating body 27, with the object P received in the receiving groove 27a, rotates in the Z8 direction around the rotation axis, and when the receiving groove 27a reaches a diagonally downward position, the object P gradually starts to move due to its own weight.

[0077] A guide 29 is provided on the side of the rotor 27, extending in a slightly curved diagonal direction, to gently guide the object P to the first system 32 below. The object P moves to the outside of the receiving groove 27a in accordance with the rotation of the rotor 27, and is guided along the guide 29 and supplied to the first system 32 without any impact.

[0078] A limit switch 28 is further provided on the side of the rotor 27, and when the rotation of the rotor 27 presses the limit switch 28, it is detected that one load item P has been supplied to the first system 32. This detection result is transmitted from the limit switch 28 to the control device 40. Here, as shown in FIG. 4, a pair of limit switches 28 are provided at a distance from each other, and with this configuration, the left and right regions of the elongated load item P come into contact with both limit switches 28, making it possible to confirm that the load item P has been received in the receiving groove 27a in the correct orientation.

[0079] Here, although not shown in the figure, a weight scale may be provided below the rotating body 27 instead of the limit switch 28, and the weight scale may detect that the loaded material P has been supplied to the first system 32 and may also detect the weight of the loaded material P.

[0080] 5, a discharge door 22f is provided on the lower surface of the lower supply section 22B so as to be rotatable in the Z4 direction, and a separate discharge door 22b is provided on the front surface of the outer box 21 so as to be rotatable in the Z3 direction. A transparent plate 22e is provided on the discharge door 22b, and a slit (not shown) is provided in the discharge door 22f for checking the inside.

[0081] When removing the loaded materials P from the storage container 22, one of the discharge doors 22b is rotated in the Z3 direction to open it, and then the other discharge door 22f is rotated in the Z4 direction to open it, thereby allowing multiple loaded materials P to be continuously and efficiently discharged from the lower supply section 22B.

[0082] Furthermore, a transparent plate 22e is provided on the discharge door 22b, and a slit for checking the inside (not shown) is provided on the discharge door 22f, so that the inside of the lower supply section 22B and the rotating body 27 can be seen from the outside, and it can be confirmed that multiple loaded items P are moving in the lower supply section 22B without clogging, and that one loaded item P is received in the correct posture in the receiving groove 27a of the rotating body 27, etc.

[0083] 6, a transparent plate 22e is also provided on the rotatable storage door 22d on the side of the storage container 22. This transparent plate 22e allows the storage positions of the many load items P stored in the storage container 22 to be confirmed.

[0084] Next, an example of the control content of the explosive loading system by the control device will be described with reference to Figures 7 to 11. Here, Figure 7 is a diagram showing an example of the hardware configuration of the control device, and Figure 8 is a diagram showing an example of the functional configuration of the control device. Also, Figure 9 is a diagram showing a state in which the charged material is supplied from the supply device to the first system, Figure 10 is a diagram showing a state in which the charged material is sent to an intermediate position in the second system, and Figure 11 is a diagram showing a state in which the charged material is sent from the second system to the explosive loading hole.

[0085] 7, the control device 40 includes a CPU (Central Processing Unit) 41, a main memory device 42, an auxiliary memory device 43, a communication IF (interface) 44, and an input / output IF 45, which are interconnected by a connection bus 46. The main memory device 42 and the auxiliary memory device 43 are computer-readable recording media. Note that the above components may be provided separately, or some of the components may not be provided.

[0086] The CPU 41 is also called an MPU (Microprocessor) or a processor, and may be a single processor or a multiprocessor. The CPU 41 is a central processing unit that performs overall control of the control device 40, which is a computer. The CPU 41, for example, deploys a program stored in the auxiliary storage device 43 in an executable form in the working area of ​​the main storage device 42, and controls peripheral devices through the execution of the program, thereby providing functions that meet a predetermined purpose.

[0087] The main memory device 42 stores computer programs executed by the CPU 41, data processed by the CPU 41, and the like. The main memory device 42 includes, for example, a flash memory, a random access memory (RAM), and a read-only memory (ROM). The auxiliary memory device 43 stores various programs and data on a readable and writable recording medium and is also referred to as an external memory device. The auxiliary memory device 43 stores, for example, an operating system (OS), various programs, various tables, and the like. The OS includes, for example, a communication interface program that exchanges data with external devices connected via the communication IF 44. Examples of external devices include communication devices (none of which are shown) provided in the first pump 35, the second pump 36, the ball valve 34, the limit switch 28, and the like. The network includes a public network such as the Internet, a wireless network such as a mobile phone network, a dedicated network such as a virtual private network (VPN), a local area network (LAN), and the like.

[0088] The auxiliary storage device 43 is used, for example, as a storage area that supplements the main storage device 42, and stores computer programs executed by the CPU 41, data processed by the CPU 41, etc. The auxiliary storage device 43 is a silicon disk including nonvolatile semiconductor memory (flash memory, EPROM (Erasable Programmable ROM)), a hard disk drive (HDD: Hard Disk Drive), a solid state drive, etc. Examples of the auxiliary storage device 43 include drives for removable recording media such as CD drives, DVD drives, and BD drives, and examples of removable recording media include CDs, DVDs, BDs, USB (Universal Serial Bus) memories, and SD (Secure Digital) memory cards.

[0089] The communication IF 44 is an interface with the network to which the control device 40 is connected. The communication IF 44 receives, via the network, detection data indicating that the charge material P has been supplied from the limit switch 28 to the first system 32. When the charge material P is to be sent out in the first system 32, the communication IF 44 sends a drive command signal to the first pumping machine 35, and when the charge material P is to be sent out to the charging hole H in the second system 33, the communication IF 44 closes the ball valve 34 and then sends a drive command signal to the second pumping machine 36.

[0090] The input / output IF 45 is an interface for inputting and outputting data between devices connected to the control device 40. Input devices such as a keyboard, a touch panel, a mouse, or other pointing device, and a microphone are connected to the input / output IF 45. The control device 40 receives operation instructions and the like from an operator who operates the input device via the input / output IF 45.

[0091] In addition, the input / output IF 45 is connected to a display device such as a liquid crystal panel (LCD: Liquid Crystal Display) or an organic EL panel (EL: Electroluminescence), a printer, a speaker, or other output device. For example, of the charge holes H at the working face K stored in the control device 40, the charge hole H to be loaded with the material P to be charged is displayed on the display device.

[0092] 8, the control device 40 provides various functions of at least a communication unit 402, a supply device driving unit 404, a delivery device driving unit 406, a ball valve driving unit 408, and a storage unit 410 by executing a program by a CPU 41. Note that at least a part of the processing functions may be provided by a DSP (Digital Signal Processor), a GPU (Graphics Processing Unit), or the like, and similarly, at least a part of the processing functions may be provided by a dedicated LSI (Large Scale Integration) such as an FPGA (Field-Programmable Gate Array), a numerical calculation processor, an image processing processor, or other digital circuits.

[0093] The communication unit 402 is communicably connected to the communication IFs provided in each supply device 20, the first pressure pump 35, the second pressure pump 36, the ball valve 34, and the limit switch 28 via the network.

[0094] As shown in Figure 9, a drive command signal S0 is sent from the supply device drive unit 404 of the control device 40 to the supply mechanism 23 (second actuator 26 constituting it) of the supply device 20A, and the loaded material P is supplied from the supply device 20A to the first system 32.

[0095] Then, during the process of supplying the material P from the supply device 20A to the first system 32, the limit switch 28 detects the passage of the material P, and the detection data S1 is transmitted to the communication unit 402 of the control device 40, and the detection data received by the communication unit 402 is stored in the storage unit 410.

[0096] In response to the detection data being stored in the storage unit 410, a drive command signal S2 is transmitted from the delivery device drive unit 406 of the control device 40 to the first pressure pump 35, as shown in FIG. Here, in addition to automatically transmitting the drive command signal S2, when the detection data is stored in the storage unit 410, a notification that the preparation for sending out the loaded material P is complete may be displayed on a display device, and upon receiving this display, an operator may perform an operation to transmit the drive command signal S2 to the first pump 35 via the device drive unit 406.

[0097] Upon receiving the drive command signal S2, the first pump 35 supplies compressed air to the first system 32, and the compressed air sends the loaded material P from the first system 32 through the ball valve 34 in the Y5 direction to a midpoint of the loading pipe 33a of the second system 33.

[0098] When the object P to be loaded is stopped at a predetermined position in the second system 33, as shown in FIG. 11, the ball valve driving unit 408 of the control device 40 sends a drive command signal S3 to close the ball valve 34, and the ball valve 34 that receives the drive command signal S3 is brought into a completely closed state.

[0099] Next, the discharge device drive unit 406 of the control device 40 sends a drive command signal S4 to the control valve 36a located in the flow path connecting the second pump 36 and the second system 33 to control it to open, and further, the discharge device drive unit 406 sends a drive command signal S5 to the second pump 36.

[0100] Upon receiving the drive command signal S5, the second pump 36 supplies compressed air, which sends out the lubricating water supplied from the water tank 37 in the Y6 direction to the second system 33, while pushing the material P to be loaded, which is stopped at a predetermined position, from the rear in the Y7 direction, and sending the material P to be loaded from the second system 33 to the charging hole H of the working face K in the Y8 direction, thereby loading the material P to be loaded.

[0101] By using the face drilling rig 100 equipped with the illustrated explosive loading system 50, workers are no longer required to perform the highly difficult explosive loading work close to the face K, and therefore, when loading explosives or other materials P into the charge hole H drilled in the face K, it is possible to achieve a loading work that is safer and less difficult to perform. Furthermore, the explosive loading system 50 allows for efficient loading work.

[0102] It should be noted that the present invention is not limited to the configuration shown here, and other embodiments may be possible in which other components are combined with the configurations described in the above embodiments. In this regard, modifications are possible without departing from the spirit of the present invention, and can be appropriately determined depending on the application form. For example, while the illustrated example shows a configuration in which each component is controlled using an explosive loading system 50 mounted on the face drilling rig 100, each component may also be controlled using a remote control. [Explanation of symbols]

[0103] 10: Cart 12:Operator cabin 14: Cage Boom (Boom) 15: Mancage (workbench) 16: Work boom (boom) 17: Rotating unit 20,20A~20D: Feeding device 21: Outer box 21a:Front 21b:Aperture 21c: Slide rail 22: Containment container 22A: Upper storage section 22B: Lower supply section 22a:Front 22b: Discharge door 22c: Side 22d: Containment door 22e: Transparent plate 22F: Discharge door 22g: Slide rail 22h: Lock key 23: Supply mechanism 24: Bottom (springboard) 24a: Lower supply side area 24b: Bend (L-shaped bend) 24c: Downward space 24d: Rotating end 24e: Rotating shaft 25: First actuator 26: Second actuator 27: Rotating body 27a: Receiving groove 28: Limit switch 29: Guide 30: Delivery device 31: Sending system 32: 1st system (loading pipe) 33:Second system 33a: Loading pipe 33b: Loading hose 33c: Loading pipe 34: Ball valve 34a: Rotating body 34b: Through hole 35: First sending means (sending means, first pressure pump) 36: Second delivery means (delivery means, second pressure pump) 36a: Control valve 37: Water tank 38: Weight scale 39A: Perforated rod 39B: Cleaning rod 40: Control device 50: Explosives loading system 100: Face drilling machine G: Bedrock K: Face H: Charge hole P: Loading material (explosives)

Claims

1. An explosives loading system that loads a charge containing at least an explosive into a charge hole formed in a face, A supply device that supplies the material to be charged; a delivery device that delivers the charge supplied from the supply device to the charging hole; The delivery device includes a delivery system through which the object is delivered, and a delivery means for moving the object in the delivery system, The delivery system includes a first system that receives the charge from the supply device, and a second system that delivers the charge moved from the first system to the charge hole, the supply device includes a storage container that stores a plurality of the objects to be loaded, and a supply mechanism that receives one of the objects from the storage container and supplies it to the first system; the storage container includes an upper storage section and a lower supply section extending from below the upper storage section to align the plurality of objects to be loaded in a row and supply the objects to the supply mechanism one by one; An explosive loading system characterized in that the area of ​​the bottom surface of the upper storage section on the lower supply section side is formed by a spring plate that moves up and down via a pivot shaft, and the spring plate is moved up and down by a first actuator.

2. The jumping plate has a bent portion bent downward in a dogleg shape at an end portion of the region on the lower supply portion side, 2. The explosive loading system according to claim 1, wherein the bent portion prevents the charged material from entering the space below the spring plate when the spring plate moves upward.

3. the supply mechanism includes a second actuator and a rotating body that receives the object to be loaded via a receiving groove while being rotated by the second actuator; 3. The explosive loading system according to claim 1, wherein the charge is supplied from the receiving groove to the first system when the receiving groove is oriented in the direction of the first system.

4. the supply device includes an outer box having an opening on the front surface, and the storage container housed inside the outer box so as to be freely accessible through the opening; a storage door for storing the object to be loaded is provided on a side surface of the storage container; a discharge door for discharging the loaded material is provided below the storage container; The storage container is pulled out from the outer box, and the object to be loaded is stored in the storage container from the side through the storage door, 3. An explosives loading system according to claim 1 or 2, characterized in that when the discharge door is opened, a plurality of the charges are successively discharged through the lower feed section.

5. 3. An explosive loading system as described in claim 1 or 2, characterized in that transparent plates are provided on part of the front and part of the side of the storage container, and the storage state of the loaded material can be easily seen through the transparent plates.

6. 3. The explosive loading system according to claim 1, wherein a check valve or a ball valve is provided between the first system and the second system.

7. The delivery means includes a first delivery means for moving the charged material from the first system to an intermediate position of the second system, and a second delivery means for moving the charged material from an intermediate position of the second system to the charging hole, the first delivery means is either a first pressure feeder or a unit including a cylinder mechanism and a push rod that is reciprocated in the first system by the cylinder mechanism, 7. The explosive loading system according to claim 6, wherein said second delivery means is a second pump.

8. The explosive loading system of claim 3, characterized in that the first system is equipped with a weighing scale that measures the weight of the loaded material supplied from the supply device, or a limit switch that detects that the loaded material has been supplied to the rotating body.

9. A trolley and a boom attached to the carriage so as to be able to rotate freely and rise and fall freely, The explosive loading system according to claim 1 or 2, wherein the supply device is mounted on the carriage, A face drilling machine characterized in that a part or all of the second system is mounted on the boom.

10. 10. The face drilling rig according to claim 9, further comprising at least one of a drilling system and a charge hole cleaning system mounted on the boom.

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