Explosives loading device

Abstract

To provide an explosive loading device capable of preventing blockage of explosive at an explosive outlet of an explosive supply device.SOLUTION: An explosive loading device for loading explosives (additional die 11) into a charging hole formed in a face includes: an explosive supply device 2; a loading machine for pumping explosives into a charging hole; and an explosive supply path 4 that serves as a path for sending explosives to the loading machine. The explosive supply device 2 includes a feed roller 30 that sends the explosives to the explosive supply path 4.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an explosive loading device for loading explosives into a charge hole formed in a face.

Background Art

[0002] Conventionally, an explosive loading device for remotely operating an operation of loading an explosive and a booster into a charge hole formed in a face has been known (see Patent Document 1, etc.). The explosive loading device includes an explosive supply device, a booster supply device, and a pressure feeding device that pressure-feeds the explosive supplied by the explosive supply device or the booster supplied by the booster supply device into the charge hole. The pressure feeding device includes a loader provided on the discharge side of the explosive supply device and the booster supply device, a loading hose connected to the end of the loader, and a loading pipe connected to the end of the loading hose. Then, with the end side of the loading pipe inserted into the charge hole, air is sent from the loader side into the explosive or booster supplied into the loading hose to pressure-feed the explosive or booster into the charge hole for loading.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the explosive loading device of Patent Document 1, since the explosive is supplied to the loader side by the free fall method, there is a possibility that the explosive may be caught in the dropping passage where the explosive drops and the subsequent explosive may be clogged. That is, the explosive loading device of Patent Document 1 has a problem that the explosive may be clogged in the vicinity of the explosive outlet of the explosive supply device. This invention provides an explosive loading device that can suppress clogging of explosives at the explosive outlet side of the explosive supply device. [Means for solving the problem]

[0005] The explosive loading device according to the present invention is an explosive loading device for loading explosives into a propellant hole formed in a working face, comprising an explosive supply device, a loader for pressurizing the explosives into the propellant hole, and an explosive supply passage which serves as a passage for sending the explosives to the loader, wherein the explosive supply device comprises a feed roller for sending the explosives to the explosive supply passage. The feed roller has one or more protrusions on its outer circumferential surface, and each protrusion has a first curved plate attached to the outer circumferential surface and a second curved plate attached on top of the first curved plate, and the wall surface of the protrusion is formed by the end face on one end of the first curved plate in the circumferential direction and the end face on one end of the second curved plate in the circumferential direction, which are offset from each other in the circumferential direction of the outer circumferential surface. Characterized by 。 Ma Furthermore, the feed roller is characterized by having a plurality of protrusions provided at intervals along the circumferential direction on its outer surface, which has a circular cross-section. Furthermore, the convex portion is characterized in that the wall surface on the side that collides with the explosive when the roller is rotated in the opposite direction to the direction in which the explosive is being fed is formed as a stepped surface. Furthermore, it is characterized by being equipped with a control device that rotates the feed roller in the forward or reverse direction, which is the direction in which the explosive is fed. Furthermore, the control device is characterized by controlling the rotational movement of the feed roller so that the time spent rotating the feed roller in the forward direction is different from the time spent rotating the feed roller in the reverse direction. The explosive loading device according to the present invention provides an explosive loading device that can suppress clogging of explosives at the explosive outlet side of the explosive supply device. Furthermore, the explosive supply device is equipped with a partition wall located above the feed roller, and the partition wall has an inner wall surface located upstream of the explosive supply device from the vertical plane passing through the centerline of the feed roller. As a result, vertical loads from the explosives are less likely to be applied to the feed roller, and the rotational load on the feed roller can be reduced. Furthermore, the device is characterized by having an explosive pressing means that presses the end face of the explosive supplied from the explosive supply device to the explosive supply path and sends it to the loader for explosive pumping, thus enabling the explosive discharged from the explosive supply device to be smoothly supplied to the loader. Furthermore, the loading mechanism is positioned so that its central axis extends horizontally, and the explosive supply path is also provided so that it extends horizontally. This allows for the realization of a low-profile device, and makes it possible to provide an explosive loading device that can be introduced even into tunnels with small cross-sections. [Brief explanation of the drawing]

[0006] [Figure 1] A diagram showing the operating status of an explosive loading device. [Figure 2] A plan view showing the external appearance of the explosive loading device. [Figure 3] This figure shows the external appearance of the explosive supply device as viewed from direction A in Figure 2. [Figure 4] A vertical cross-section of an explosive supply device. [Figure 5] A plan view showing the outline of the explosive loading device. [Figure 6] Enlarged cross-sectional view of the feed roller and opening / closing mechanism of the explosive supply device. [Figure 7] A front view (viewed from the X direction in Figure 6) illustrating the general outline of the forced explosive loading method in the explosive loading system. [Figure 8] A rear view illustrating the overview of the forced loading method in the loading system. [Modes for carrying out the invention]

[0007] Embodiment 1 As shown in Figure 1, the explosive loading device 1 according to Embodiment 1 is a device for loading explosives and packing material into a charging hole H drilled in the tunnel face K at a tunnel excavation site T, and comprises an explosive loading system 1A, a packing material loading system 1B, and a control device 1X, and is configured such that a loading hose C is connected to the end of the loader 3A of the explosive loading system 1A and the end of the loader 3B of the packing material loading system 1B, and a loading pipe D is connected to the end of the loading hose C.

[0008] The explosive loading system 1A, the packing material loading system 1B, and the control device 1X are configured to be movable by being installed on a mounting base 1Z equipped with a means of travel 1Y such as wheels that can travel on rails 1R installed from outside the tunnel excavation site T to the tunnel excavation site T, as shown in Figure 1, or they are configured to be movable by being mounted on a vehicle. Then, after worker M, who is working on the near side of the working face K, inserts the loading pipe D into the charge hole H, worker M or an assistant can remotely send instructions to the control device 1X from an indicator device (not shown in the diagram), or give instructions directly to the control device 1X. This causes the control device 1X to control the explosive loading system 1A to supply explosives to the loading hose C, or the control device 1X to control the packing material loading system 1B to supply packing material to the loading hose C. Furthermore, the control device 1X controls the loaders 3A and 3B so that compressed air is supplied from the loaders 3A and 3B to the explosive or packing material supplied into the loading hose C, thereby pressurizing and loading the explosive or packing material into the charging hole H. Furthermore, when inserting the loading pipe D into the propellant hole H formed at a high position on the tunnel face K, a working machine such as a drill jumbo G equipped with a rock drill E and a working cage F is used, with worker M riding in the working cage F to perform the work. Also, when inserting the loading pipe D into the propellant hole H formed at a low position close to the ground L on the tunnel face K, worker M performs the work from the ground L.

[0009] In the explosive loading device 1, a package-shaped explosive (parent dynamite) 10 (hereinafter referred to as "parent dynamite 10"), which is composed of, for example, an emulsion-type water-containing explosive and a detonator for igniting the water-containing explosive, is attached to the tip of the loading pipe D. Then, the main die 10, which is attached to the tip of the loading pipe D inserted into the propellant hole H formed in the face K, is pressed by compressed air supplied from the explosive loading system 1A and loaded into the end of the propellant hole H. Next, a cartridge-shaped explosive (increment dynamite) 11 composed of water-containing explosive without detonator that explodes due to the detonation of the parent die 10 (i.e., an explosive that expects to be detonated by sympathetic detonation, hereinafter referred to as "increment die 11") is pumped by the above-described explosive loading system 1A and supplied to the charging hole H, and is loaded behind the parent die 10 loaded in the charging hole H. Then, a plugging material (hereinafter referred to as "anchor") 12 formed of clay or the like to close the mouth of the charging hole H is pumped by the plugging material loading system 1B and supplied to the charging hole H, and is loaded behind the increment die 11 loaded in the charging hole H. That is, by the explosive loading device 1, the parent die 10, the increment die 11, and the anchor 12 are densely loaded in a state of being sequentially crushed in order from the bottom of the charging hole H toward the mouth side.

[0010] In addition, after the other end side of a leg wire (not shown) having one end connected to the detonator of the parent die 10 loaded at the bottom of the charging hole H is pulled out of the charging hole H, the increment die 11 and the anchor 12 are loaded into the charging hole H, and the other end of the leg wire is connected to a blasting device (not shown). That is, after the parent die 10 and the increment die 11 are loaded into the charging hole H, the mouth of the charging hole H is blocked by the anchor 12, and the cut face K is blasted by operating the blasting device to ignite the detonator of the parent die 10.

[0011] The cartridge-shaped explosives constituting the parent die 10 and the increment die 11 are formed, for example, by filling a cylindrical paper tube with a clay-like explosive in which water, ammonium nitrate, sodium nitrate, sorbitan sesquioleate, microcrystalline wax, glass microballoon, etc. are mixed, and are configured in a round bar shape with a diameter of about 2.8 cm and a length of about 16 to 17.7 cm. The anchor 12 is formed, for example, by packaging clay formed in a round bar shape with a diameter of 2.6 cm and a length of about 10 cm with a packaging material such as vinyl.

[0012] The explosive loading system 1A of the explosive loading device 1 includes an explosive supply device (explosive supply device) 2, a loading machine 3A for pumping the explosive booster 11 into the loading hole H, an explosive booster supply path (explosive supply path) 4 serving as a passage for sending the explosive booster 11 to the side of the loading machine 3A for pumping the explosive booster, and an explosive booster pressing means (explosive pressing means) 5 for pressing the end face 11e of the rod-shaped explosive booster 11 supplied from the explosive booster supply device 2 to the explosive supply path 4 and sending it to the side of the loading machine 3A for pumping the explosive booster. In the explosive loading system 1A according to Embodiment 1, the loading machine 3A is arranged such that the central axis 3C of the pipe body 3a extends in the horizontal direction, and the explosive booster supply path 4 is formed on a horizontal road surface extending in the horizontal direction, and the horizontal road surface of the explosive booster supply path 4 and the inlet of the loading machine 3A are configured to communicate with each other. And a configuration is adopted in which the end face 11e of the rod-shaped explosive booster 11 supplied from the explosive booster supply device 2 to the horizontal road surface of the explosive booster supply path 4 is pressed by the explosive booster pressing means 5 to forcibly send the explosive booster 11 to the side of the loading machine 3A for pumping the explosive booster.

[0013] The filling material loading system 1B of the explosive loading device 1 includes an anchor supply device (filling material supply device) 6, a loading machine 3B for pumping the anchor 12 into the loading hole H, an anchor supply path (filling material supply path) 7 serving as a passage for sending the anchor 12 to the side of the loading machine 3B for pumping the anchor, and an anchor pressing means (filling material pressing means) 8 for pressing the end face 12e of the rod-shaped anchor 12 supplied from the anchor supply device 6 to the anchor supply path 7 and sending it to the side of the loading machine 3B for pumping the anchor. In the filling material loading system 1B according to Embodiment 1, the loading machine 3B is arranged such that the central axis 3C of the pipe body 3a extends in the horizontal direction, and the anchor supply path 7 is formed on a horizontal road surface extending in the horizontal direction, and the horizontal road surface of the anchor supply path 7 and the inlet of the loading machine 3B are configured to communicate with each other. And a configuration is adopted in which the end face 12e of the rod-shaped anchor 12 supplied from the anchor supply device 6 to the horizontal road surface of the anchor supply path 7 is pressed by the anchor pressing means 8 to forcibly send the anchor 12 to the side of the loading machine 3B for pumping the anchor.

[0014] Furthermore, a loading hose C connected to the end of the loader 3A of the explosive loading system 1A, and a loading pipe D connected to the end of the loading hose C, form a pressurized passage for pressurizing the additional die into the propellant hole H. Similarly, a loading hose C connected to the end of the loader 3B of the packing material loading system B, and a loading pipe D connected to the end of the loading hose C, form a pressurized passage for pressurizing the filling into the propellant hole H. Furthermore, as the loading hose C, for example, as shown in Figure 5, a loading hose C having a bifurcated connector CW that can be connected to both the end of the loading machine 3A and the end of the loading machine 3B is used. In other words, the loader 3A, loader hose C, and loader pipe D constitute a pumping device for pressurizing the additional die 11 into the propellant hole H. Furthermore, the loader 3B, loader hose C, and loader pipe D constitute a pumping device for pressurizing the ammunition 12 into the propellant hole H.

[0015] First, let me explain the explosive loading system 1A. In this specification, up, down, left, right, front, and back are defined and explained as the directions shown in Figures 2 to 7. The additional die supply device 2 of the explosive loading system 1A comprises an additional die storage section 2A and an additional die delivery means 2B.

[0016] As shown in Figures 2, 4, and 5, the die housing section 2A is composed of a housing box 20 capable of housing a large number of die housings 11. The storage box 20 comprises a right end wall (one end wall) 21, a left end wall (other end wall) 22, an inclined bottom wall 24 that slopes downward from the lower end of the right end wall 21 toward the lower end of the left end wall 22 from which the additional die discharge port (explosive outlet) 23 is formed, a front side wall (side wall) 25, a rear side wall (side wall) 26, and an upper opening 27, and as shown in Figure 4, the upper opening 27 is formed as an input opening that can be opened and closed by an opening / closing lid 28. In other words, a large number of extension dies 11, 11… are loaded and stored inside the storage box 20. That is, as shown in Figure 2, the cylindrical extension dies 11 are installed and stored so that their central axis 11C extends horizontally in the front-to-back direction. Furthermore, as shown in Figure 4, the inner surface of the inclined bottom wall 24 of the storage box 20 is equipped with a gravity conveyor 29 formed by arranging multiple free rollers 29a, 29a... in the direction of inclination, so that the additional die 11 can easily move along the inclination direction of the inclined bottom wall 24.

[0017] As shown in Figures 4, 5, and 6, the die delivery means 2B includes a feed roller 30 provided above the die discharge port 23 of the die storage section 2A to send the die 11 from the die storage section 2A to the die supply path 4, a relay supply path 40 provided between the die discharge port 23 of the die storage section 2A and the die supply path 4, and an opening / closing device 50 having an opening / closing plate 51 for opening and closing the relay supply path 40.

[0018] The feed roller 30 is a means to break up the clogging state of the die 11 caused by the concentration of the die 11, 11, ... at the die discharge port 23 of the die housing section 2A, so that the die 11, 11... do not become concentrated and clogged. The feed roller 30 comprises a rotational central axis 31, a roller 32 having an outer peripheral surface 32a with a circular cross-section, and a rotational power supply means 33 such as a motor that applies rotational force to the rotational central axis 31 to rotate the roller 32.

[0019] The feed roller 30 is configured such that, as shown in Figure 7, for example, one end of the rotational axis 31 is rotatably attached to the connecting plate 46, and the other end of the rotational axis 31 is rotatably attached to the connecting plate 47, and the other end of the rotational axis 31 is connected to a motor shaft, for example, a motor shaft of a motor which serves as a rotational power supply means 33. The control device 1X controls the motor so that, as shown in Figure 6, the additional die 11 rotates in either the forward or reverse direction, which is the direction in which it is sent to the relay supply path 40 and the additional die supply path 4.

[0020] As shown in Figure 6, the outer circumferential surface 32a of the roller 32 has a plurality of protrusions 34, 34... provided at predetermined intervals along the circumferential direction. The protrusion 34 is composed of, for example, a first curved plate 34a and a second curved plate 34b that is laminated on top of the first curved plate 34a. The first layer of curved plate 34a is formed such that its lateral dimension, corresponding to the width direction of the roller 32, is approximately the same as the overall width of the roller 32, and its circumferential dimension, which curves in accordance with the circumferential direction of the roller 32, is formed to a predetermined length. The second layer of curved plate 34b is formed such that its lateral dimension, corresponding to the width direction of the roller 32, is approximately the same as the entire width of the roller 32, and its circumferential dimension, which curves in accordance with the circumferential direction of the roller 32, is shorter than a predetermined length of the first layer of curved plate. The protrusion 34 is constructed such that the first layer of curved plate 34a is attached to the outer circumferential surface 32a of the roller 32 by welding or other mounting means, and the second layer of curved plate 34b is attached on top of the first layer of curved plate 34a by welding or other mounting means. The material of the feed roller 30 is not particularly limited, but it can be made of, for example, metal or synthetic resin.

[0021] The protrusion 34 is configured such that the wall surface 35 on the side that collides with the die 11 when the roller 32 is rotated in the opposite direction is formed as a stepped surface. In other words, the wall surface 35 is formed as a stepped surface composed of the end face 35a on one circumferential end of the first layer of curved plate 34a and the end face 35b on one circumferential end of the second layer of curved plate 34b, which are positioned offset in the circumferential direction. That is, the wall surface 35 is composed of two-stage protrusions. Furthermore, the protrusion 34 includes a wall surface 36 on the side that collides with the die 11 when the roller 32 is rotated in the forward direction. In other words, the wall surface 36 is composed of the end face 36a on the other end in the circumferential direction of the first layer of curved plate 34a and the end face 36b on the other end in the circumferential direction of the second layer of curved plate 34b, which coincide in the circumferential direction. That is, the wall surface 36 is formed on a wall surface having a height equal to the thickness dimension of the curved plate 34a plus the thickness dimension of the curved plate 34b.

[0022] Furthermore, as shown in Figure 6, the left end wall (other end wall) 22, which is a partition wall provided above the feed roller 30 described above, has an inner wall surface 22A that is located on the right end wall (one end wall) 21 side of the housing box 20 (i.e., upstream side in the inclination direction of the inclined bottom wall 24) from the vertical plane containing the rotation centerline of the feed roller 30. The inner wall surface 22A includes an inclined surface 22a extending from the lower end 22e of the left end wall 22 toward the right end wall 21 of the housing box 20 and upward, and a vertical surface 22b extending vertically upward from the upper end of the inclined surface 22a. This vertical surface 22b is a vertical surface parallel to and opposite to the vertical surface containing the rotation centerline of the feed roller 40. As a result of having the inner wall surface 22A, the additional dies 11, 11... housed in the housing box 20 are positioned to align along the inclined surface 22a, so that the weight of the additional dies 11 above the feed roller 32 does not easily affect the additional dies 11 and the feed roller 30 located in close proximity to the feed roller 32. Therefore, deformation of the additional dies 11 located in close proximity to the feed roller 32 can be reduced, and the rotational load on the feed roller 30 can also be reduced.

[0023] Furthermore, to prevent the additional die 11 from being caught between the lower end 22e of the left end wall 22 and the protrusion 34 of the feed roller 30, the distance between the lower end 22e of the left end wall 22 and the protrusion 34 of the feed roller 30 is configured to be smaller than the diameter of the rod-shaped additional die 11.

[0024] The control device 1X is configured to perform rotational control to rotate the feed roller 30 in the forward or reverse direction. As a result, forces from different directions are applied to the die in contact with the feed roller 30, which can change the behavior of the die in contact with the feed roller 30, and thus forces are also applied to the die in contact with the die 11. Therefore, the cluster of dies concentrated near the dies discharge port 23 can be disrupted, thus providing a clearing effect for the dies 11, 11....

[0025] In particular, by using a control device 1X that performs rotational control by making the time spent rotating in the forward direction and the time spent rotating in the reverse direction different, it becomes possible to apply irregular forces from different directions to the additional dies 11 that are in contact with the feed roller 30, thereby improving the effect of clearing blockages in the additional dies 11, 11... For example, by using a control device 1X that performs rotational control such as rotating the feed roller 30 in the forward direction for 3 seconds and then in the reverse direction for 1.5 seconds, it was confirmed that the effect of clearing blockages in the additional dies 11, 11... was improved.

[0026] Furthermore, the rotational control of the feed roller 30 by the control device 1X is performed, for example, when no die 11 is present in at least one of the die supply path 4 and the die discharge port 23. For example, as shown in Figure 6, the system includes a sensor S1 that detects whether or not an additional die 11 is present on the additional die supply path 4, and a sensor S2 that detects whether or not an additional die 11 is present at the additional die discharge port 23. Furthermore, the control device 1X is configured to control the rotation of the feed roller 30 by outputting a drive signal to the motor, which serves as the rotational power supply means 33, when it receives a signal from at least one of the sensors S1 and S2 indicating that the additional die 11 is not present. Consequently, jamming of the additional dies 11, 11... is quickly resolved. Furthermore, the control device 1X is configured to stop the rotation control of the feed roller 30 by outputting a stop signal to the motor, which serves as the rotational power supply means 33, when it receives signals from both sensors S1 and S2 indicating the presence of the additional die 11. In other words, it stops the rotation control even if the specified operating time (for example, the 3 seconds + 1.5 seconds mentioned above) has not elapsed since the start of rotation control. Therefore, it is possible to prevent unnecessary force from the feed roller 30 from being applied to the additional die 11 when the additional die 11 is not jammed. That is, when the feed roller 30 is rotated when the additional die 11 is not jammed, the protrusions of the feed roller 30 rub against the outer diameter of the additional die 11, which can easily cause the shrink wrap on the additional die 11 to peel off, but this problem can be prevented. As shown in Figure 6, sensor S1 is installed, for example, on the back side of the inclined bottom wall 24 located below the die discharge port 23 in the housing box 20, and sensor S2 is installed on the back side of the right inner surface 42a at the lower end of the vertical path 42 of the relay supply path 40, which will be described later. Furthermore, for example, diffuse reflection type photoelectric sensors are used as sensors S1 and S2, and a transmissive hole (not shown) is formed on the lower end side of the inclined bottom wall 24 where sensor S1 is installed and the vertical path 42 where sensor S2 is installed, in order to transmit light from the photoelectric sensors.

[0027] The aforementioned die discharge port 23 is formed by the space between the lower end position of the outer peripheral surface 32a of the roller 32 of the feed roller 30 and the inner surface of the inclined bottom wall 24 of the housing box 20. Between the die discharge port 23 and the die supply path 4, there is a relay supply path 40 which serves as a supply path for supplying die 11 from the die discharge port 23 to the die supply path 4. The relay supply path 40 comprises an inclined path 41 extending diagonally downward from the die discharge port 23, and a vertical path 42 extending vertically downward from the lower end of the inclined path 41. In other words, the relay supply path 40 is a supply path that extends continuously vertically from the die discharge port 23 to the die supply path 4. That is, the relay supply path 40 is a supply path that reaches the horizontal die supply path 4 below via the inclined path 41 and vertical path 42 that extend continuously vertically from the upper die discharge port 23. The road surface 41a of the ramp 41 and the right inner surface 42a of the vertical road 42 are provided to extend from the inner surface of the inclined bottom wall 24 of the storage box 20. Furthermore, the upper surface 41b of the ramp 41 and the left inner surface 42b of the vertical path 42 are formed by cover plates 43. The cover plate 43 is composed of a curved plate formed by curving the portion between the upper plate portion 43A, which forms the upper surface 41b parallel to the road surface 41a of the ramp 41, and the lower plate portion 43B, which forms the left inner surface 42b parallel to the right inner surface 42a of the vertical road 42. The lower end of the lower plate portion 43B is attached to a bracket 40X provided on the left side of the die supply path 4 via a hinge mechanism 40Y, as shown in Figure 6.

[0028] In other words, the cover plate 43 is provided so that it can be opened and closed via a hinge mechanism 40Y. In other words, as shown by the solid line in Figure 6, the cover plate 43 is set to a closed state, thereby forming a relay supply path 40 in which the inner surface of the cover plate 43, which is the upper surface 41b of the ramp 41 and the left inner surface 42b of the vertical path 42, and the road surface 41a of the ramp 41 and the right inner surface 42a of the vertical path 42 are parallel to each other. Furthermore, the cover plate 43 is configured to open to the left, as shown by the dashed line in Figure 6. That is, after the work is completed, the additional dies 11, 11… remaining in the relay supply path 40 can be recovered by opening the cover plate 43. The bracket 40X is provided with a stopper 40Z to prevent the cover plate 43 from opening beyond a predetermined angle. As shown in Figure 7, a sensor S3, such as a proximity switch for checking the open or closed state of the cover plate 43, is provided near the cover plate 43, which is set to the closed state. The control device 1X operates the explosive loading device 1 only when it receives a signal from the sensor S3 indicating that the cover plate 43 is closed, and stops the operation of the explosive loading device 1 when it receives a signal from the sensor S3 indicating that the cover plate 43 is open. In other words, the explosive loading device 1 is equipped with an interlock function that stops its operation when the cover plate 43 is open.

[0029] The lower end of the relay supply path 40 reaches the additional die supply path 4, and the additional die outlet 23 and the additional die supply path 4 are connected by the relay supply path 40. Furthermore, a front wall 44 and a rear wall 45 are provided for the relay supply path 40. The distance between the front wall 44 and the rear wall 45 is set to be slightly larger than the length dimension of the extension die 11. Therefore, the relay supply path 40 is formed by the space enclosed by the road surface 41a of the ramp 41, the right inner surface 42a of the vertical path 42, the cover plate 43, the front side wall 44, and the rear side wall 45. Therefore, the die 11 that has discharged from the die discharge port 23 reaches the die supply path 4 via the relay supply path 40.

[0030] Furthermore, an opening and closing device 50 is provided on the lower plate portion 43B of the cover plate 43. The switching device 50 comprises a switching plate 52 that is provided to move back and forth relative to the relay supply path 40 via a switching plate through hole 51 formed in the lower plate portion 43B when the relay supply path 40 is formed, and a switching drive device 53 for the switching plate 52. The opening / closing device 50 is configured such that, for example, a plunger 54 (see Figure 6) that moves back and forth by a reciprocating device such as a solenoid, hydraulic cylinder, or air cylinder, which serves as an opening / closing drive device 53, has an opening / closing plate 52 on the tip side of the plunger 54.

[0031] In other words, the opening / closing plate 52 of the opening / closing device 50 is configured to receive the additional die 11 in a horizontal position when it closes the relay supply path 40, and to drop the additional die 11 into the additional die supply path 4 while remaining in a horizontal position when the opening / closing plate 52 opens the relay supply path 40. In other words, the control device 1X controls the opening and closing of the opening and closing plate 52 so that it can receive the additional dies 11 discharged from the additional die discharge port 23 to the relay supply path 40 one by one and supply them one by one onto the additional die supply path 4.

[0032] The opening / closing plate 52 is composed of, for example, a horizontal plate having a horizontal surface that extends in the front-rear, left-right, and right directions. As shown in Figure 7, the length of the opening / closing plate 52 in the front-rear direction is formed to be, for example, 1 / 3 or more of the length dimension of the extension die 11, and is configured to support the central part of the extension direction of the extension die 11 as it descends the relay supply path 40. Furthermore, as shown in Figure 6, the upper surface of the opening / closing plate 52 on the leading edge side in the opening / closing direction is formed as a curved surface 52t corresponding to the lower outer curved surface of the cover plate 43 side of the upper extension die 11 between the upper and lower extension dies 11, 11 that descend within the relay supply path 40. In addition, the leading edge of the opening / closing plate 52 in the opening / closing direction is formed as a pointed shape to easily fit between the upper and lower extension dies 11, 11 that descend within the relay supply path 40. In other words, the opening / closing plate 52 is configured to move back and forth horizontally between the lower die 11 located on the die supply path 4 and the upper die 11 located directly above the lower die 11. Then, by moving the opening / closing plate 52 in the direction of closing the relay supply path 40, the curved surface 52t at the tip of the opening / closing plate 52 receives the descending add-on die 11 within the relay supply path 40 while maintaining it in a horizontal position. In other words, the curved surface 52t at the tip of the opening / closing plate 52 contacts the lower outer curved surface on the cover plate 43 side of the upper add-on die 11, thereby receiving the upper add-on die 11 and maintaining it in a horizontal position. When the opening / closing plate 52 is moved in the direction of opening the relay supply path 40, the add-on die 11 that was being received by the opening / closing plate 52 is supplied onto the add-on die supply path 4 while remaining in a horizontal position. In other words, by opening and closing the opening / closing plate 52, the additional dies 11 can be smoothly supplied one by one onto the additional die supply path 4 while keeping the additional die 11 in a horizontal position. In a configuration without an opening / closing plate 52, there is a possibility that the additional die 11 may fall onto the additional die supply path 4 at an angle (tilted in the front-to-back direction as shown in Figure 7). If the additional die 11 falls onto the additional die supply path 4 at an angle in this way, it may become impossible to load the additional die 11, causing problems with the loading operation, or the additional dies 11, 11... may get stuck in the relay supply path 40. On the other hand, in this embodiment, since an opening / closing plate 52 is provided, the upper die 11 can be kept in a horizontal position directly above the die supply path 4, so that the die 11 can be dropped onto the die supply path 4 while remaining in a horizontal position. Consequently, the die 11 can be loaded smoothly and accurately, and the die 11, 11... can be aligned in a horizontal position within the relay supply path 40, thus preventing the die 11 from getting stuck in the relay supply path 40.

[0033] As shown in Figures 3, 5, and 7, a pressing body 5A is positioned in front of the die supply path 4 to press the die 11 supplied onto the die supply path 4. The pressing body 5A and the pressing body drive device 5B (see Figure 3), which drives the pressing body 5A to move back and forth in the front-rear direction, constitute a die pressing means 5 that presses the end face 11e of the rod-shaped die 11 supplied to the die supply passage 4 and sends it to the loader 3A for pressurized die feeding. The pressing body drive device 5B is composed of, for example, a moving device such as a hydraulic cylinder or an air cylinder. Furthermore, the end face 11e of the extension die 11 is the front end face (one end) in the direction along the central axis 11C of the extension die 11 supplied on the extension die supply path 4 (see Figure 5).

[0034] As shown in Figure 7, at the end of the die supply passage 4, which has a horizontal surface, for example, the aforementioned connecting plate 46 is provided to extend, and the connecting hole 48 formed in the connecting plate 46 is connected to the inlet of the loading machine 3A, thereby creating communication between the die supply passage 4 and the inside of the pipe body 3a of the loading machine 3A. The loading machine 3A comprises a pipe 3a, a loading valve 3b located midway along the pipe 3a, a loading valve opening / closing device 3c, and a pressurized air supply mechanism 3X.

[0035] The loading valve 3b has a valve body 3d, such as a ball valve, which opens and closes the pipeline of the pipe body 3a by the loading valve opening / closing device 3c.

[0036] The compressed air supply mechanism 3X comprises a compressed air supply device 3e and a compressed air supply pipe 3f for supplying compressed air to the valve body 3d.

[0037] With the valve body 3d of the loading valve 3b closing the conduit of the pipe 3a, the compressed air supply device 3e is driven to blow compressed air toward the valve body 3d from a position behind (downstream of) the valve body 3d. As a result, the air that collides with the valve body 3d becomes an airflow toward the loading hose C, and the additional die 11 supplied to the loading hose C is pumped to the propellant hole H by the pressure of this airflow.

[0038] Next, the process until the additional die 11 is loaded into the propellant hole H will be explained based on Figure 5. In Figure 5, arrow a indicates the direction of movement of the additional die 11, and arrow b indicates the direction of advancement and retraction of the pressing body 5A. First, the additional dies 11, 11... are placed in the additional die housing section 2A and then the control device 1X is activated. When the control device 1X receives a signal from the sensor S1 indicating that an additional die 11 is present on the additional die supply path 4, it controls the pressing body drive device 5B to move the pressing body 5A to the rear (towards the loading machine 3A), thereby causing the pressing body 5A to press against the end face of the additional die 11 being supplied on the additional die supply path 4. The additional die 11, pressed by the pressing body 5A, moves into the pipeline of the loading machine 3A or into the loading hose C. Furthermore, the opening / closing plate 52 is controlled to close the relay supply path 40 in synchronization with the movement of the pressing body 5A to the rear (towards the loading machine 3A), and to open the relay supply path 40 in synchronization with the movement of the pressing body 5A to the front. The control device 1X controls the opening / closing drive device 53 and the pressing body drive device 5B to move a predetermined number of additional dies 11 into the pipeline of the loading machine 3A or into the loading hose C. Subsequently, the control device 1X controls the closing loading valve opening / closing device 3c to close the pipeline of the pipe body 3a with the valve body 3d, and then controls the compressed air supply device 3e to blow compressed air toward the valve body 3d. As a result, the air that collides with the valve body 3d becomes an airflow toward the loading hose C, and the additional die 11 supplied to the loading hose C is pressurized by the pressure of this airflow and loaded into the propellant hole H. Furthermore, as described above, the control device 1X controls the rotation of the feed roller 30 when it receives from sensors S1 and S2 that, for example, there are no additional dies 11 in at least one of the additional die supply path 4 and the additional die discharge port 23. This resolves the blockage of the additional dies 11, 11... In other words, by providing a feed roller 30 whose rotation is controlled by the control device 1X, and an opening / closing body 52 whose opening and closing is controlled by the control device 1X, it is possible to eliminate clogging of the add-on dies 11 near the add-on die outlet 23 of the add-on die housing section 2A, and clogging of the add-on dies 11 in the relay supply path 40, and it is now possible to smoothly supply the add-on dies 11 one by one onto the add-on die supply path 4 while keeping the add-on dies 11 horizontal.

[0039] Next, we will describe the loading system 1B. As described above, the filling loading system 1B comprises a filling supply device 6, a loading machine 3B for pressurizing the filling, a filling supply passage 7, and a filling pressing means 8. As shown in Figure 5, the filling supply device 6 includes a conveying device 6A that transports the filling 12 to the alignment path 63, which will be described later, and a conveying device 6B that transports the filling 12 from the alignment path 63 to the filling supply path 7.

[0040] The conveying device 6A includes a parts feeder 60 that accommodates and conveys a large number of packings 12, 12..., an upstream conveying path 61a connected to the outlet of the parts feeder 60, a straightening device 62 that straightens the shape of the packings 12 conveyed by the upstream conveying path 61a, and a downstream conveying path 61b that conveys the straightened packings 12 via the straightening device 62 to the alignment path 63.

[0041] The straightening device 62 is configured such that, for example, four rollers, each with a curved concave cross-section, are arranged in a cross shape. As the padding 12 passes through the cylindrical space surrounded by the curved concave outer surfaces of the four rollers, the outer surface of the cylindrical padding 12 comes into contact with the curved concave outer surfaces of the four rollers, thereby straightening it. In other words, it is a device that straightens the shape of the padding 12, which may have been deformed during truck transport, storage, unpacking, etc., back into a predetermined round rod shape.

[0042] The transfer device 6B includes an alignment path 63 that aligns the packing materials 12 transported by the transport device 6A so that multiple packing materials 12 are lined up in series on a horizontal plane, and a transfer means 64 that transfers the multiple packing materials 12, 12 lined up in series on the alignment path 63 to the packing material supply path 7. The transfer means 64 comprises an extrusion member 64a and an extrusion member drive device (not shown) that moves the extrusion member 64a forward and backward. The extrusion member drive device is composed of, for example, a moving device such as a hydraulic cylinder or an air cylinder. Furthermore, the surface of the padding supply path 7 is configured to be located, for example, approximately the diameter of the padding 12, lower than the surface of the alignment path 63.

[0043] A pressing body 8A is positioned in front of the filling supply passage 7 to press down on the multiple fillings 12, 12… (for example, three fillings 12) supplied onto the filling supply passage 7. The pressing body 8A and the pressing body drive device 8B (see Figure 3), which drives the pressing body 8A to move back and forth in the front-rear direction, constitute a packing pressing means 8 that presses the end face 12e of the packing 12 located at the front of the multiple rod-shaped packing 12, 12... supplied to the packing supply passage 7, thereby sending these multiple packing 12, 12... to the packing pressurizing machine 3B. The pressing body drive device 8B is composed of, for example, a moving device such as a hydraulic cylinder or an air cylinder. Furthermore, the end face 12e of the filling 12 refers to the front end face (one end side) of the filling 12 located at the frontmost position among the multiple fillings 12, 12... supplied on the filling supply path 7, in the direction along the central axis 12C.

[0044] As shown in Figure 8, a connecting plate 71 is provided at the end of the bellows supply passage 7, which has a horizontal surface. The connecting hole 72 formed in the connecting plate 71 is connected to the inlet of the loading machine 3B, thereby creating communication between the bellows supply passage 7 and the inside of the pipe body 3a of the loading machine 3B. Furthermore, the loader 3B has the same configuration as the loader 3A described above.

[0045] Next, the process of loading the packing 12 into the propellant hole H will be explained based on Figure 5. In Figure 5, arrows c and d indicate the transport direction of the packing 12, arrow e indicates the forward and backward direction of the extrusion member 64a, and arrow f indicates the forward and backward direction of the pressing body 8A. First, the packing blocks 12, 12... are fed into the parts feeder 60, and then the parts feeder 60 is activated to transport a predetermined number of packing blocks 12, 12... to the alignment path 63. Then, a transport completion signal is transmitted from a sensor (not shown) to an operation panel (not shown) indicating that a predetermined number of packing materials 12, 12… have been transported to the alignment path 63. After the operator of the operation panel confirms that the operation panel has received the transport completion signal, they press the packing material loading signal transmission switch on the operation panel. Upon receiving the packing material loading signal, the extrusion member drive device moves the extrusion member 64a to the right side of Figure 5. As a result, the predetermined number of packing materials 12, 12… are pushed out together by the extrusion member 64a and transported from the alignment path 63 to the packing material supply path 7. Then, when the control device 1X receives a signal from an externally-displayed detection device (detection sensor) indicating that a predetermined number of packing materials 12, 12... have been transferred to the packing material supply path 7, it controls the pressing body drive device 8B (see Figure 3) to move the pressing body 8A to the rear side (towards the loading machine 3B), thereby causing the pressing body 8A to press against the end faces 12e of the packing materials 12 located on the packing material supply path 74. A predetermined number of pads 12, 12… pressed by the pressing body 8A move into the pipeline of the loading machine 3B or into the loading hose C. Subsequently, the control device 1X controls the closing loading valve opening / closing device 3c to close the pipeline of the pipe body 3a with the valve body 3d, and then controls the compressed air supply device 3e to blow compressed air toward the valve body 3d. As a result, the air that collides with the valve body 3d becomes an airflow toward the loading hose C, and a predetermined number of packing materials 12, 12… supplied to the loading hose C are pressurized by the pressure of this airflow and loaded into the propellant hole H. In other words, because the transfer device 6B is provided, a predetermined number of packing materials 12, 12... can be transferred together to the packing material supply path 7, and a predetermined number of packing materials 12, 12... can be loaded together into the propellant hole H, making the packing material loading operation more efficient.

[0046] According to the explosive loading device 1 of Embodiment 1, the explosive loading system 1A employs an explosive loading system 1A that uses an additional die pressing means 5 to forcibly press the additional die 11 and supply it to the loading machine 3A, thereby enabling the additional die 11 discharged from the additional die supply device 2 to be smoothly supplied to the loading machine 3A. Furthermore, according to the explosive loading device 1 of Embodiment 1, the loading system 1B employs a forced pressing supply method for the packing, in which the packing 12 is forcibly pressed by the packing pressing means 8 and supplied to the loading machine 3B. This makes it possible to smoothly supply a predetermined number of packings 12, 12... discharged from the packing supply device 6 to the loading machine 3B all at once.

[0047] According to the explosive loading device 1 of Embodiment 1, the additional die 11 or the padding 12 is forcibly pressed in the horizontal direction, which reduces the height dimension (machine height) of the explosive loading device 1. In other words, the explosive loading device disclosed in Patent Document 1 used a method in which the additional die or core was allowed to fall freely in the vertical direction, which inevitably required increasing the machine height in order to ensure sufficient drop height. However, the explosive loading device 1 according to Embodiment 1 uses a configuration in which the additional die 11 or core 12 is forcibly pressed in the horizontal direction, thus enabling the realization of a low-height device and providing an explosive loading device 1 that can be introduced even into tunnels with small cross-sections. In other words, as shown in Figure 7, the loader 3A for pressurizing the additional die is positioned so that its central axis 3C extends horizontally in the HD direction, and the additional die supply passage 4 is provided so that it extends horizontally in the HD direction. Furthermore, as shown in Figure 8, the loader 3B for pressurizing the packing material is positioned so that its central axis 3C extends horizontally in the HD direction, and the packing material supply passage 7 is provided so that it extends horizontally in the HD direction. As a result, a low-height device can be realized, and an explosive loading device 1 can be provided that can be introduced into tunnels with small cross-sections.

[0048] According to the explosive loading device 1 of Embodiment 1, the explosive supply device 2 is equipped with a feed roller 30 that is rotated by the control device 1X to send the additional die 11 to the explosive supply path 4. This makes it possible to break up the group of additional dies that are concentrated near the additional die discharge port 23, and to suppress clogging of the additional die 11 near the additional die discharge port 23 of the additional die storage section 2A.

[0049] According to the explosive loading device 1 of Embodiment 1, an intermediate supply passage 40 is provided between the additional die discharge port (explosive outlet) 23 of the explosive supply device 2 and the explosive supply passage 4, and an opening / closing device 50 has an opening / closing plate 52 that is controlled by the control device 1X to open and close the intermediate supply passage 40. As a result, clogging of the additional dies 11 in the intermediate supply passage 40 can be eliminated, and the additional dies 11 can be smoothly supplied one by one onto the additional die supply passage 4 while keeping the additional dies 11 horizontal. In other words, by providing the intermediate supply passage 40 and the opening / closing device 50, the additional dies 11, 11... can be aligned near the additional die discharge port 23 of the explosive supply device 2, and the additional dies 11 can be smoothly supplied one by one to the additional die supply passage 4 and the loader 3A.

[0050] According to the explosive loading device 1 of Embodiment 1, since the loading machine 3A for pressurizing the additional die and the loading machine 3B for pressurizing the filling are provided separately, it is possible to control the loading machine 3A for pressurizing the additional die and the loading machine 3B for pressurizing the filling separately. Therefore, as in Embodiment 2 described later, there is no need to move the loading machine, and thus the time loss in the work can be reduced.

[0051] Embodiment 2 In the explosive loading device 1 according to Embodiment 1, an example was provided in which a loader 3A for pressurizing the additional die and a loader 3B for pressurizing the filling are provided separately. However, a configuration in which a single loader is used for both pressurizing the additional die and the filling is also possible. That is, the explosive loading device may be configured to include the above-mentioned die booster supply device 2, a packing material supply device 6, a loader for pressurizing the die booster or packing material into the charge hole, a die booster supply path 4, a packing material supply path 7, a loader moving means for moving the loader to the end of the die booster supply path 4 or the end of the packing material supply path 7, a die booster pressing means 5 for pressing the end face 11e of the die booster 11 supplied from the die booster supply device 2 to the die booster supply path 4 and sending it to the loader, and a packing material pressing means 8 for pressing the end face 12e of the packing material 12 supplied from the packing material supply device 6 to the packing material supply path 7 and sending it to the loader. According to the explosive loading device of Embodiment 2, similar to the explosive loading device 1 of Embodiment 1, the die expander 11 discharged from the die expander supply device 2 and the filler 12 discharged from the filler supply device 6 can be smoothly supplied to the loading machine side. Furthermore, according to the explosive loading device of Embodiment 2, since the loader can be reduced to one unit, the cost associated with the loader can be reduced, and the control of the loader can be simplified.

[0052] Embodiment 3 The above example illustrates a control device 1X that rotates the feed roller 30 in the forward direction for 3 seconds and then in the reverse direction for 1.5 seconds, but it is not limited to these times. In other words, the control device only needs to control the rotation of the feed roller 30 so that the time for rotating the feed roller 30 in the forward direction and the time for rotating the feed roller 30 in the reverse direction are different.

[0053] Embodiment 4 The control device may be configured to rotate the feed roller 30 only in the forward direction, which is the direction in which the additional die (explosive) 11 is fed, or it may be configured to rotate it only in the reverse direction, which is opposite to the forward direction.

[0054] Embodiment 5 As an example of a feed roller 30, a feed roller 30 was given that has a circular cross-section and is provided with a plurality of protrusions 34 spaced apart along the circumferential direction on its outer surface. However, the feed roller can be configured as long as it has a circular cross-section and an outer surface with protrusions and recesses, that is, one or more protrusions on its outer surface.

[0055] Embodiment 6 The feed roller may have a circular cross-section and may not have any protrusions on its outer surface.

[0056] Even with the control device of Embodiments 3 and 4, and the feed roller of Embodiments 5 and 6, the intended objective of the present invention is to suppress clogging of the add-on die (explosive) 11 at the add-on die discharge port 23 (explosive outlet) side of the explosive supply device 2.

[0057] Furthermore, the meaning of "horizontal" as described in the above embodiments includes horizontal or near-horizontal states. That is, the meaning of "horizontal" as used in the description of the present invention includes not only strictly horizontal states, but also near-horizontal states with an inclination of, for example, a few degrees relative to the horizontal plane.

[0058] Furthermore, although the above example illustrates a configuration comprising a relay supply passage 40 provided between the die outlet 23 of the die storage section 2A and the die supply passage 4, and an opening / closing device 50 having an opening / closing plate 51 for opening and closing the relay supply passage 40, a configuration without the relay supply passage 40 and the opening / closing device 50 is also possible. For example, the die discharge port (explosive outlet) 23 and the die supply passage 4 may be configured to be continuous, and a feed roller 30 may be provided above the die discharge port 23.

[0059] Alternatively, a feed roller may be provided below the die discharge port 23.

[0060] Furthermore, although the above example illustrates an explosive loading device 1 equipped with an additional die loading system (explosive loading system) 1A and a filler loading system (filling material loading system) 1B, the explosive loading device of the present invention may also be an explosive loading device equipped only with an additional die loading system (explosive loading system) 1A, i.e., without a filler loading system (filling material loading system) 1B. [Explanation of symbols]

[0061] 1. Explosives loading device, 1A. Explosives loading system, 1X control device, 2 die booster devices (explosives supply devices), 3A Loader for pressurized feeding of additional die (for pressurized feeding of explosives), 4 Additional die supply line (explosives supply line), 5. Die pressing means (explosive pressing means), 11. Die (explosive), 11e. End face of the die, 22. Left end wall (partition wall), 22A. Inner wall surface, 23. Die discharge port (explosive outlet), 30 Feed roller, 32a Outer surface, 34 Protrusion, 35 Wall surface (stepped surface), H Charge hole.

Claims

1. An explosive loading device for loading explosives into a propellant hole formed in the face of a firework, Explosives supply device, A loading machine for pressurizing explosives into the charge hole, It is equipped with an explosive supply passage that serves as a passage for sending explosives to the loader, The explosive supply device is equipped with a feed roller that sends explosives into the explosive supply path. The feed roller has one or more protrusions on its outer surface, which has a circular cross-section. The protrusion has a first curved plate attached to the outer surface and a second curved plate attached on top of the first curved plate. An explosive loading device characterized by having a stepped surface formed on the wall surface of the protruding portion, which is composed of the end face of one circumferential end of the first layer of curved plate and the end face of one circumferential end of the second layer of curved plate, which are positioned offset from each other in the circumferential direction of the outer surface.

2. The explosive loading device according to claim 1, characterized in that the feed roller has a circular cross-section and a plurality of protrusions provided at intervals along the circumferential direction on its outer surface.

3. The explosive loading device according to claim 2, characterized in that the protrusion has a configuration in which the wall surface on the side that collides with the explosive when the feed roller is rotated in the opposite direction to the direction in which the explosive is fed is formed as a stepped surface.

4. The explosive loading device according to claim 3, characterized in that it is equipped with a control device that rotates the feed roller in the forward or reverse direction, which is the direction in which the explosive is fed.

5. The explosive loading device according to claim 4, characterized in that the control device controls the rotational movement of the feed roller such that the time for rotating the feed roller in the forward direction is different from the time for rotating the feed roller in the reverse direction.

6. The explosive supply device is equipped with a partition wall located above the feed roller. The explosive loading device according to any one of claims 1 to 5, characterized in that the partition wall has an inner wall surface located upstream of the explosive supply device from the vertical surface passing through the centerline of the feed roller.

7. The explosive loading device according to any one of claims 1 to 5, further comprising explosive pressing means for pressing the end face of the explosive supplied from the explosive supply device to the explosive supply path and sending it to the loader for explosive pumping.

8. The loader is positioned so that its central axis extends horizontally. The explosive loading device according to claim 7, characterized in that the explosive supply path is provided to extend horizontally.

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