Device for interval charging

Abstract

The utility model relates to the field of engineering blasting, in particular to a device for interval charging, which comprises a charging pipe, and a first buckle is arranged on the outer wall of the charging pipe. The conical cover is located in the charging pipe, and the area between the protruding side of the conical cover and the charging pipe is a charging bin; and the connecting plate is connected with the charging pipe through a first buckle. The charging pipe can be firmly fixed on the connecting plate through the first buckle, so that the charging pipe is not easy to displace or fall off, the stability and the reliability of explosion propagation are enhanced, and the explosion quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of engineering blasting, in particular to a device for interval charging. Background Art

[0002] During the blasting construction process, when it comes to peripheral smooth blasting and pre-splitting blasting processes, the last row of blastholes usually uses the method of spaced charging. For some special areas, such as those with surrounding structures that need to be protected, spaced charging is also used to control the energy of the explosives. Due to the spaced charging, there is no direct connection between the explosives. Therefore, one of the current ways to detonate the spaced charging is to use a focusing cap instead of a detonating cord. When the focusing cap explodes, it forms a high-energy jet with great penetrating and cutting capabilities. The high-energy jet formed by the previous section of explosives detonates the next section of explosives at a certain distance, thereby achieving stable detonation transmission without a detonating cord.

[0003] In the prior art, in order to maintain the interval arrangement of explosives in a blasthole during interval charging, several explosives are usually connected in series with bamboo strips or PVC pipes and spaced at a certain distance, and the explosives are fixed with tape. However, this method cannot accurately fix the spacing position of each section of explosives, and it is also easy for the explosives to shift or fall off during the process of feeding into the blasthole. This may cause unstable detonation transmission for the detonation method of the next section of explosives using a high-energy jet, and it is easy to cause blind shots or duds. Because the detonation method of the next section of explosives using a high-energy jet detonates, the interval distance between the upper and lower sections of explosives must be accurately controlled. In addition, during the explosion process, there may be obstructions between the upper and lower sections of explosives, which may block the detonation transmission of the explosives. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art that, when charging explosives at intervals, adhesive tape is used to wrap explosives around bamboo strips or PVC tubes to fix them, and this fixing method has poor reliability and is prone to displacement or falling of explosives, resulting in changes in the intervals between the upper and lower sections of explosives, which affects the stability of detonation transmission, and to provide a device for charging explosives at intervals.

[0005] The utility model provides a device for interval charging, comprising:

[0006] A charge tube, wherein the outer wall of the charge tube is provided with a first buckle;

[0007] A conical cover, wherein the conical cover is located inside the charge tube, and the area between the protruding side of the conical cover and the charge tube is a charge chamber;

[0008] A connecting plate, wherein the connecting plate is connected to the charge tube via the first buckle.

[0009] The utility model provides a device for interval charging, wherein the outer wall of the charging tube is provided with a first buckle, and the charging tube can be firmly fixed on the connecting plate through the first buckle, thereby ensuring that the charging tube is not easy to be displaced or fall off, enhancing the stability and reliability of explosion transmission, and thus improving the blasting quality.

[0010] Preferably, the connecting plate is provided with a snap-fit ​​piece, which can be connected with the first snap, and a plurality of the snap-fit ​​pieces are evenly arranged along the length direction of the connecting plate. The snap-fit ​​piece can not only locate the distance between adjacent charge tubes more quickly and conveniently, but also enhance the firmness of the connection between the charge tube and the connecting plate.

[0011] Preferably, the buckle fitting is a through hole on the connecting plate. When the first buckle can be stuck in the through hole, it can limit the relative movement between the charge tube and the connecting plate, play a better fixing role, and also save more materials.

[0012] Preferably, the outer wall of the charge tube is provided with three first buckles, and the three first buckles are arranged in a straight line along a direction parallel to the axis of the charge tube. Such a solution improves the stability of the connection by increasing the connection points between the charge tube and the connection plate.

[0013] Preferably, a plurality of charge tubes are arranged in the same direction and connected to the connection plate, a spacer tube is provided between two adjacent charge tubes, the cross-sectional size and shape of the spacer tube are consistent with those of the charge tube, a second buckle is provided on the outer wall of the spacer tube, and the second buckle can be connected to the connection plate. The spacer tube can avoid obstructions between adjacent charge tubes, further improving the stability of detonation transmission.

[0014] Preferably, the inner wall of the charge tube is provided with a blade, the blade is located in the area of ​​the charge bin, and a plurality of the blades are evenly distributed along the circumference of the inner wall of the charge tube. The blade can automatically cut the package of the explosive during the process of loading the explosive into the charge bin, so that the explosive can completely fit the charge bin and the raised side of the conical cover, ensuring that the loaded explosive can form an energy-gathering hole.

[0015] Preferably, the cross-sectional shape of the connecting plate fits the outer wall of the charge tube. The outer wall of the charge tube is generally circular like the cross-sectional shape of the blast hole, and the cross-sectional shape of the connecting plate is an arc shape with the same diameter as the outer wall of the charge tube, so that the connecting plate fits the inner wall of the blast hole better.

[0016] Preferably, one end of the connecting plate is provided with a hole, and the hole is used to connect a traction rope. After the traction rope is connected to the hole, the spaced charge device can be conveniently sent to a predetermined depth in the blasthole.

[0017] Preferably, the first buckle, the second buckle and the connecting plate are made of plastic.

[0018] Preferably, the conical cover is made of metal or ceramic.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The utility model provides a device for spaced charging, wherein the charging tube can be firmly fixed on the connecting plate through the first buckle, so that the charging tube is not easily displaced or dropped off, thereby enhancing the stability and reliability of explosion transmission and thus improving the blasting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of a charge tube of a device for spaced charge.

[0022] Figure 2 The present invention is a cross-sectional view of a charge tube of a device for spaced charge.

[0023] Figure 3 A top view of a charge tube of a device for spaced charge.

[0024] Figure 4 The present invention is a schematic diagram of a connecting plate of a device for spaced charges.

[0025] Figure 5 The present invention is a schematic cross-sectional view of a connecting plate of a device for spaced charges.

[0026] Figure 6 Schematic diagram of the spacer tube.

[0027] Figure 7 The present invention is a schematic diagram of the arrangement of a device for spaced charge.

[0028] Figure 8 The present invention is a schematic diagram of the arrangement of a device with spacer tubes for spaced charge.

[0029] Fig. 9 for Figure 7 Cross-sectional view of section AA.

[0030] Markings in the figure:

[0031] 1-Charge tube,

[0032] 2-cone hood,

[0033] 3- First buckle,

[0034] 4- Blade,

[0035] 5-Charge chamber,

[0036] 6-Connection plate,

[0037] 61- snap-fit ​​part, 62-hole,

[0038] 7- Spacer tube,

[0039] 8- Cavity,

[0040] 9-Second buckle,

[0041] 10- Explosives. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0043] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present utility model.

[0044] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0045] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0046] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0047] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0048] Example 1

[0049] like Figures 1 to 9 As shown, a device for spaced charging includes a charging tube 1, a conical cover 2, a first buckle 3, a charging bin 5, and a connecting plate 6.

[0050] The outer wall of the charge tube 1 is provided with a first buckle 3. The charge tube 1 is generally a cylindrical plastic tube, the interior of which is used to fill explosives 10. The wall thickness of the charge tube 1 can be 2-3 mm, specifically, 2 mm, 2.5 mm, 3 mm.

[0051] Two or more first buckles 3 may be provided on the outer wall of a single charge tube 1 and arranged along the same straight line. Multiple first buckles 3 can be connected to the connecting plate 6, thereby improving the reliability of the connection.

[0052] The first buckle 3 can be a U-shaped elastic buckle, which is fixed to the outer wall of the charge tube 1 by means of gluing, bolts, or clips. The left and right elastic sheets in the opening area of ​​the U-shaped elastic buckle are provided with grooves that match the thickness of the connecting plate 6. The left and right elastic sheets can clamp the thickness edges of the connecting plate 6 in cooperation with the grooves to play a role in connection and fixing. The first buckle 3 can also be an annular elastic buckle with an opening, which is fixed to the outer wall of the charge tube 1 by means of gluing, bolts, or clips. The opening is connected with two mutually adjacent splints, which can clamp the two surfaces of the connecting plate 6 to play a role in connection and fixing. The first buckle 3 can also be a Velcro, which is fixed to the outer wall of the charge tube 1 by gluing, and the connecting plate 6 can also be provided with a matching Velcro, and the two Velcros are fitted together to play a role in connection and fixing.

[0053] The conical cover 2 is located inside the charge tube 1, and the area between the convex side of the conical cover 2 and the charge tube 1 is the charge chamber 5. Figure 7 , Figure 8 As shown, the conical cover 2 enables the explosive 10 loaded in the charge chamber 5 to form an energy-gathering hole around the conical cover 2. When the explosive 10 explodes, the energy-gathering hole forms a high-energy jet with great penetrating and cutting capabilities to detonate the next section of explosive 10. The conical cover 2 is conical in shape, and its bottom edge can be located at one-third, one-quarter or one-fifth of the height of the charge tube 1, or flush with the bottom end of the charge tube 1, to ensure that the charge chamber 5 can be filled with enough explosives 10.

[0054] In an optional embodiment, the material of the conical cover 2 can be metal or ceramic. Metal has high density, low compressibility, good ductility and plasticity, and these characteristics enable the conical cover 2 made of metal to better form a jet during the explosion process and improve the energy gathering effect. The material of the conical cover 2 can specifically be copper, cast iron or steel.

[0055] The connecting plate 6 is connected to the charge tube 1 through the first buckle 3. The connecting plate 6 serves to connect multiple charge tubes 1 in series. The length of the connecting plate 6 is greater than the height of the charge tube 1. According to actual use needs, the length of the connecting plate 6 can be 3 times, 4 times, 5 times, 10 times, 20 times, 30 times, etc., of the height of the charge tube 1.

[0056] In an optional embodiment, the connecting plate 6 may be provided with a snap-fitting piece 61, which can be connected to the first snap-fitting piece 3, and a plurality of snap-fitting pieces 61 are evenly arranged along the length direction of the connecting plate 6. The snap-fitting piece 61 can not only locate the distance between adjacent charge tubes 1 more quickly and conveniently, but also enhance the firmness of the connection between the charge tube 1 and the connecting plate 6. There may be two or more first snap-fitting pieces 3 on the charge tube 1, and the spacing between the plurality of first snap-fitting pieces 3 matches the spacing between the snap-fitting pieces 61, ensuring that the plurality of first snap-fitting pieces 3 on the charge tube 1 can be connected and fixed with the snap-fitting piece 61 at the same time. The arrangement spacing of the snap-fitting pieces 61 can be 1 cm to 10 cm, and the arrangement spacing of the first snap-fitting pieces 3 should be an integer multiple (an integer greater than or equal to 1) of the arrangement spacing of the snap-fitting pieces 61. Specifically, the arrangement intervals between the snap fittings 61 and the first snaps 3 may be 1 cm and 2 cm, 1 cm and 4 cm, 1 cm and 6 cm, 2 cm and 6 cm, 2 cm and 8 cm, and 2 cm and 10 cm, respectively.

[0057] In an optional embodiment, the snap-fitting member 61 may be a groove, a protrusion, a hanging ring, a through hole, etc. on the connecting plate 6, so as to facilitate connection with the first snap-fitting member 3. Preferably, the snap-fitting member 61 may be a through hole on the connecting plate 6, and the first snap-fitting member 3 may be clamped in the through hole. When the first snap-fitting member 3 is clamped in the through hole, the relative movement between the charge tube 1 and the connecting plate 6 may be limited, so as to better play a fixing role. Specifically, the through hole may be rectangular, and the corresponding cross section of the first snap-fitting member 3 may also be rectangular, and the size thereof matches the size of the through hole.

[0058] In an optional embodiment, the outer wall of the charge tube 1 may be provided with three first buckles 3, which are arranged in a straight line along the axis direction parallel to the charge tube 1. Specifically, the three first buckles 3 may be arranged at both ends and the middle of the charge tube 1 respectively.

[0059] In an optional embodiment, if Figure 6 , Figure 8 As shown, a plurality of charge tubes 1 are arranged in the same direction and connected to a connecting plate 6. A spacer tube 7 may be provided between two adjacent charge tubes 1. The cross-sectional size and shape of the spacer tube 7 are consistent with those of the charge tube 1. The hollow area of ​​the spacer tube 7 is a cavity 8. The outer wall of the spacer tube 7 is provided with a second buckle 9. The second buckle 9 can be connected to the connecting plate 6. Specifically, it can also be connected to the buckle fitting 61 on the connecting plate 6. In the case where there is no spacer tube 7, as shown in FIG. Figure 7As shown, after the device for spacing charges is sent into the blasthole, some obstructions such as water, rubble or collapsed holes may appear between adjacent charge tubes 1 due to the blasting process or other reasons, which will block the explosion transmission between adjacent charge tubes 1. After adding the spacing tube 7, it can avoid the appearance of obstructions between adjacent charge tubes 1, further improving the stability of explosion transmission. There can be two or more second buckles 9 on the spacing tube 7, and the spacing between the multiple second buckles 9 and the spacing between the buckle fittings 61 are matched with each other, ensuring that the multiple second buckles 9 on the spacing tube 7 can be connected and fixed with the buckle fittings 61 at the same time. Specifically, three second buckles 9 can be arranged at both ends and the middle position of the spacing tube 7 respectively.

[0060] In an optional embodiment, the inner wall of the charge tube 1 may be provided with a blade 4, and the blade 4 is located in the area of ​​the charge bin 5, and a plurality of blades 4 are evenly distributed along the circumference of the inner wall of the charge tube 1. The back of the blade 4 is fixedly connected to the inner wall of the charge tube 1, and the edge of the blade 4 faces the center of the charge tube 1 and the opening of the charge bin 5. Generally, in the process of loading the explosive 10 into the charge bin 5, a part of the package of the explosive 10 is first cut with a knife, and then placed into the charge bin 5. In this process, the explosive 10 may scatter and cause waste, and the loading time is also prolonged. In the process of loading the explosive 10 into the charge bin 5, the blade 4 on the inner wall of the charge tube 1 automatically cuts the package of the explosive 10, which saves the loading time and avoids the waste of the explosive 10. It can also achieve the purpose of making the explosive 10 completely fit the charge bin 5 and the raised side of the conical cover 2, ensuring that the loaded explosive 10 forms an energy gathering hole. The specific arrangement of the blade 4 can be, such as Figure 3 As shown, four blades 4 are arranged at 90° intervals in the circumferential direction on the inner wall of the charge tube 1. The blades 4 can be made of metal, specifically stainless steel or carbon steel.

[0061] In an optional embodiment, if Figure 5 , Fig. 9 As shown, the cross-sectional shape of the connecting plate 6 can fit the outer wall of the charge tube 1. When the outer wall of the charge tube 1 is circular like the blast hole, the cross-sectional shape of the connecting plate 6 is an arc shape with the same diameter as the outer wall of the charge tube 1, which makes the connecting plate 6 fit the inner wall of the blast hole more closely, avoiding excessive occupation of the space of the blast hole and affecting the explosion effect of the explosive 10. Specifically, the outer wall diameter of the charge tube 1 and the diameter of the arc shape of the cross-sectional shape of the connecting plate 6 can be 25-90 mm, specifically 25 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm.

[0062] In an optional embodiment, one end of the connecting plate 6 may be provided with a hole 62, and the hole 62 is used to connect a traction rope. The connecting plate 6 is pulled and dragged through the hole 62. After the spaced charge device is sent into the blast hole, the traction rope connected through the hole 62 can control the position of the spaced charge device in the blast hole.

[0063] In an optional implementation, the first buckle 3 , the second buckle 9 and the connecting plate 6 may be made of plastic.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for spaced charge, characterized in that: include: A charge tube (1), wherein the outer wall of the charge tube (1) is provided with a first buckle (3); A conical cover (2), wherein the conical cover (2) is located inside the charge tube (1), and the area between the raised side of the conical cover (2) and the charge tube (1) is a charge chamber (5); A connecting plate (6), wherein the connecting plate (6) is connected to the charge tube (1) via the first buckle (3).

2. A device for spaced charge according to claim 1, characterized in that: The connecting plate (6) is provided with a snap-fitting piece (61), and the snap-fitting piece (61) can be connected to the first buckle (3), and a plurality of the snap-fitting pieces (61) are evenly arranged along the length direction of the connecting plate (6).

3. A device for spaced charge according to claim 2, characterized in that: The snap-fitting piece (61) is a through hole on the connecting plate (6).

4. A device for spaced charge according to claim 3, characterized in that: The outer wall of the charge tube (1) is provided with three first buckles (3), and the three first buckles (3) are arranged in a straight line along a direction parallel to the axis of the charge tube (1).

5. A device for spaced charge according to any one of claims 1 to 4, characterized in that: A plurality of charge tubes (1) are arranged in the same direction and connected to the connecting plate (6); a spacing tube (7) is provided between two adjacent charge tubes (1); the cross-sectional size and shape of the spacing tube (7) are consistent with those of the charge tubes (1); a second buckle (9) is provided on the outer wall of the spacing tube (7); and the second buckle (9) can be connected to the connecting plate (6).

6. A device for spaced charge according to claim 5, characterized in that: The inner wall of the charge tube (1) is provided with a blade (4), the blade (4) is located in the area of ​​the charge bin (5), and a plurality of the blades (4) are evenly distributed along the circumference of the inner wall of the charge tube (1).

7. A device for spaced charge according to claim 5, characterized in that: The cross-sectional shape of the connecting plate (6) fits the outer wall of the charge tube (1).

8. A device for spaced charge according to claim 5, characterized in that: One end of the connecting plate (6) is provided with a hole (62), and the hole (62) is used for connecting a traction rope.

9. A device for spaced charge according to claim 5, characterized in that: The first buckle (3), the second buckle (9) and the connecting plate (6) are all made of plastic.

10. A device for spaced charge according to claim 5, characterized in that: The material of the conical cover (2) is metal or ceramic.

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