Portable industrial explosive energy gathering cover and explosive

Abstract

The utility model relates to a portable industrial explosive energy gathering cover which comprises a circular ring, an energy gathering groove and a positioning structure, the circular ring is of a hollow tubular structure, the energy gathering groove is of a downwards-sunken cambered surface structure, the energy gathering groove is erected at the upper end of the circular ring and wrapped by the circular ring, the energy gathering groove seals the upper end of the circular ring, and the lower end of the circular ring is open and can be in butt joint with the end of a cartridge. The positioning structure is arranged at the center of the arc surface at the lower end of the energy-gathering groove and can be contacted with the end part of the cartridge; according to the energy-gathering cover, the sympathetic detonation distance of explosives is effectively increased, stable detonation propagation of cartridges without coupling charge in the axial direction of peripheral holes can be achieved under the condition that a detonating cord is not used, the smooth blasting effect is achieved, slippage of the ends of the industrial explosive cartridges can be effectively achieved, and reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel blasting, in particular to a convenient industrial explosive axial energy-gathering cover for a tunnel peripheral hole. Background Art

[0002] At present, the excavation of mountain tunnels is still mainly based on drilling and blasting, among which smooth blasting technology is the most widely used. Smooth blasting technology can effectively reduce the disturbance of blasting excavation to the tunnel surrounding rock to form a relatively flat excavation contour surface. Its technical principle is to drill a row of smooth blasting holes (peripheral holes) with a hole spacing matching the minimum resistance line on the tunnel design excavation contour line, and adopt a radial and axial uncoupled charge structure to make the peripheral hole explosion load evenly distributed. After the main tunnel excavation is blasted, the explosives in the peripheral holes are detonated at the same time, thus forming a smooth excavation contour surface that runs through the smooth blasting hole. At present, in order to achieve the stable detonation of the axial uncoupled charge rolls of the tunnel peripheral holes, it is necessary to use detonating cords to connect the rolls arranged along the axial intervals of the blast hole in series for detonation transmission.

[0003] On the other hand, due to the different policies on explosive material control in different regions of my country, detonating cords are often in short supply in some remote areas. Therefore, when conducting tunnel blasting operations in these areas, the peripheral holes have to adopt a continuous charge structure at the bottom of the hole, which causes the explosion load of the peripheral holes to be excessively concentrated at the bottom of the hole, resulting in poor quality of the tunnel blasting excavation contour surface, serious over-excavation and under-excavation, and difficulty in achieving the effect of smooth blasting. Utility Model Content

[0004] The utility model aims to provide a convenient industrial explosive axial energy-gathering cover for tunnel peripheral holes, which can focus the energy of explosives in the peripheral holes during tunnel blasting operations to form energy jets, and can realize stable detonation transmission of axially uncoupled charge rolls in the peripheral holes without using detonating cords to achieve a smooth blasting effect.

[0005] The technical solution adopted by the utility model is: a convenient industrial explosive energy-gathering cover, comprising a circular ring, an energy-gathering groove and a positioning structure; the circular ring is a hollow tubular structure, the energy-gathering groove is a downwardly concave arc surface structure, the energy-gathering groove is mounted on the upper end of the circular ring and is wrapped by the circular ring, the energy-gathering groove forms a closure on the upper end of the circular ring, the lower end of the circular ring is open and can be connected with the end of the medicine roll, and the positioning structure is arranged at the center of the arc surface at the lower end of the energy-gathering groove and can contact the end of the medicine roll.

[0006] Furthermore, the energy-gathering groove is a thin shell structure with a groove, which is conical or arc-spherical, and the front end of the energy-gathering groove is integrally connected with the circular ring. The energy-gathering groove is used to form an explosion energy jet when the explosive explodes.

[0007] Furthermore, the positioning structure is a conical positioning needle fixedly arranged at the center of the arc surface at the lower end of the energy focusing groove, which is used to insert the end of the medicine roll to fix the entire energy focusing cover.

[0008] Furthermore, the distal end of the conical positioning needle exceeds the end of the circular ring.

[0009] Furthermore, an anti-slip texture is provided on the inside of the open side of the lower end of the ring.

[0010] Furthermore, the diameter of the end of the circular ring butting against the end of the medicine roll is larger than the diameter of the end where the energy-gathering groove is located.

[0011] Furthermore, a barb structure is provided at the end of the positioning structure, and the barb structure is a plurality of sharp spikes arranged obliquely upward.

[0012] As another aspect of the utility model, it also relates to an explosive, wherein the explosive is equipped with the portable industrial explosive energy-gathering cover.

[0013] The beneficial effects and features of the utility model are:

[0014] 1. The portable industrial explosive energy-gathering cover of the utility model can form energy jets from the explosive energy in the peripheral holes during tunnel blasting operations, which can effectively increase the explosive detonation distance; in tunnel blasting operations, the use of the device can realize stable detonation transmission of the axially uncoupled charge rolls in the peripheral holes without using detonating cords, so as to achieve a smooth blasting effect, and the device is easy to operate.

[0015] 2. The portable industrial explosive energy-gathering cover of the utility model can effectively prevent the end of the industrial explosive roll from slipping by providing anti-skid texture and barb structure, thereby improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a preferred embodiment of the utility model (top perspective);

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of a preferred embodiment of the utility model (bottom perspective);

[0018] Figure 3 A side view of a preferred embodiment of the utility model;

[0019] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0020] Figure 5 This is a structural schematic diagram of a circular ring in another preferred embodiment of the utility model (anti-slip patterns are provided on the inner side of the circular ring);

[0021] Figure 6This is a structural schematic diagram of a circular ring in another preferred embodiment of the utility model (the diameter of the open end of the circular ring is enlarged);

[0022] Figure 7 This is a schematic diagram of the positioning needle structure of another preferred embodiment of the utility model (with a barb structure);

[0023] Figure 8 A schematic diagram of an industrial explosive cartridge according to a preferred embodiment of the utility model (without the energy-gathering cover inserted);

[0024] Fig. 9 It is a structural diagram of a positioning needle inserted into an industrial explosive cartridge in a preferred embodiment of the utility model and its corresponding AA cross-sectional view;

[0025] Fig.10 This is a structural diagram of the end of the industrial explosive cartridge completely wrapped by the energy-gathering cover and its corresponding cross-sectional view at BB in a preferred embodiment of the utility model;

[0026] Fig.11 This is a schematic diagram of placing industrial explosives rolls and energy-gathering covers in the peripheral holes according to a preferred embodiment of the utility model.

[0027] The reference numerals in the figure represent respectively: 1-ring, 1-1-anti-slip texture, 1-2-barb structure, 2-energy-gathering groove, 3-positioning needle, 3-1-barb structure, 4-industrial explosive roll, 5-peripheral hole, 6-blocking material. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] Please refer to Figure 1 to Figure 4 The utility model provides a convenient industrial explosive energy-gathering cover, comprising a circular ring 1, an energy-gathering groove 2 and a positioning structure 3; the circular ring 1 is a hollow tubular structure, the energy-gathering groove 2 is a downwardly concave arc surface structure, the energy-gathering groove 2 is mounted on the upper end of the circular ring 1 and is wrapped by the circular ring 1, the energy-gathering groove 2 forms a closure on the upper end of the circular ring 1, the lower end of the circular ring 1 is open and can be connected with the end of the medicine roll, so as to wrap and fix the industrial explosive medicine roll, and the positioning structure 3 is arranged at the center of the arc surface at the lower end of the energy-gathering groove 2 and can contact the end of the medicine roll.

[0030] As a preferred solution, the front end of the energy-gathering groove 2 and the ring 1 can be designed to be integrally connected, and the energy-gathering groove 2 is used to form an explosion energy jet when the explosive explodes;

[0031] The energy-gathering groove 2 is a thin shell structure with a groove, which is conical or arc-spherical. The front end of the energy-gathering groove is integrally connected with the circular ring. The energy-gathering groove is used to form an explosion energy jet when the explosive explodes.

[0032] The positioning structure 3 is a conical positioning needle fixedly arranged at the center of the arc surface at the lower end of the energy focusing groove 2, and is used to insert the end of the medicine roll to fix the entire energy focusing cover.

[0033] The distal end of the conical positioning needle exceeds the end of the ring 1 .

[0034] Please refer to Figure 5 As a preferred solution, an anti-skid texture 11 is also provided on the inside of the open side of the lower end of the ring 1, so that the ring 1 can wrap the industrial explosive roll more securely and prevent it from slipping.

[0035] Please refer to Figure 6 As a preferred solution, in order to facilitate the docking of the end of the industrial explosive roll with the open end of the ring 1, the diameter of the end of the ring 1 that docks with the end of the roll is larger than the diameter of the end where the energy-gathering groove 2 is located.

[0036] Please refer to Figure 7 As a preferred solution, a barb structure 3-1 is further provided at the end of the positioning structure 3. The barb structure 3-1 is a plurality of sharp spikes arranged obliquely upward. The barb structure can be evenly distributed around the needle body or spirally distributed. The sharp spikes can only move inward in the industrial explosive roll and prevent the industrial explosive roll from slipping, thereby enhancing its anchoring effect with the end of the roll.

[0037] As a preferred solution, the positioning structure 3 and the energy-gathering groove 2 can be designed as a detachable structure. For example, an internal threaded hole seat or a slot is set at the center of the arc surface at the lower end of the energy-gathering groove for threaded installation of the positioning structure 3. On the other hand, the connection between the ring 1 and the energy-gathering groove 2 is designed to be detachable. For example, a threaded connection or a slot connection design is used at the connection between the front end of the energy-gathering groove and the ring. In this way, the device is divided into multiple independently detachable parts, which is not only convenient for replacing the worn parts, but also convenient for transportation and storage. The disassembled parts are smaller in size, which can effectively save space.

[0038] As another aspect of the utility model, it also relates to an explosive, wherein the explosive is equipped with the above-mentioned convenient industrial explosive energy-gathering cover.

[0039] The method of using the above-mentioned convenient industrial explosive axial energy-gathering cover for tunnel peripheral holes is as follows:

[0040] 1. Please refer to Figure 8 , when charging in tunnel blasting operation, prepare industrial explosives roll 4 and convenient energy-gathering cover;

[0041] 2. Please refer to Fig. 9 , insert the positioning pin 3 of the energy-gathering cover into the center of the industrial explosive volume 4 so that it is completely immersed in the volume;

[0042] 3. Please refer to Fig.10, hold the energy-gathering cover and continue to insert the positioning needle 3. Through the squeezing effect of the industrial explosive roll 4, the circular ring 1 and the shell of the energy-gathering groove 2, the industrial explosive roll 4 can be fitted with the shell of the energy-gathering groove 2, and wrapped by the circular ring 1 of the energy-gathering cover and fixed in the circular ring 1. At this time, the end of the industrial explosive roll 4 is molded into an energy-gathering structure. After the explosive roll explodes, the explosive energy close to the energy-gathering hole will converge toward the axial direction of the energy-gathering hole to form a high-density, high-speed, and high-pressure gas jet. That is, when there is an energy-gathering hole in the explosive roll, it can be locally gathered in the direction of the energy-gathering hole to generate extraordinary blasting energy. Therefore, the high-density, high-speed, and high-pressure gas jet formed by the energy-gathering blasting can increase the explosive power and sympathetic detonation distance of the explosive. After the explosion of the explosive, an energy jet can be generated to increase the sympathetic detonation distance of the industrial explosive;

[0043] Please refer to Fig.11 During the specific operation, the blasting workers place the industrial explosive roll 4 and the energy-gathering cover of the utility model in the tunnel peripheral hole 5 according to the blasting plan design, and block the hole opening of the peripheral hole 5 (blocked at the mark 6). At this time, without using the detonating cord, the stable detonation transmission of the axially uncoupled charge rolls of the peripheral hole can be achieved to achieve a smooth blasting effect.

[0044] The energy-gathering hood of the utility model can convert the energy generated by the explosion of explosives into the jet kinetic energy of the hood material, thereby improving its penetration and cutting capabilities. At the same time, the energy-gathering hood is selected from materials with low compressibility, high density, good plasticity and ductility, so as to form a material that does not vaporize in the jet.

[0045] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the description only illustrate the structural relationship and principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A portable industrial explosive shaped cover, characterized in that: The invention comprises a circular ring (1), an energy-gathering groove (2) and a positioning structure (3); the circular ring (1) is a hollow tubular structure, the energy-gathering groove (2) is a downwardly concave arc surface structure, the energy-gathering groove (2) is mounted on the upper end of the circular ring (1) and is wrapped by the circular ring (1), the energy-gathering groove (2) forms a closed upper end of the circular ring (1), the lower end of the circular ring (1) is open and can be connected to the end of the medicine roll, and the positioning structure (3) is arranged at the center of the arc surface at the lower end of the energy-gathering groove (2) and can be in contact with the end of the medicine roll.

2. The portable industrial explosive energy-gathering cover according to claim 1 is characterized in that: The energy-gathering groove (2) is a thin shell structure with a groove, and is conical or arc-spherical. The front end of the energy-gathering groove is integrally connected to the circular ring. The energy-gathering groove is used to form an explosion energy jet when the explosive explodes.

3. The portable industrial explosive energy-gathering cover according to claim 1 is characterized in that: The positioning structure (3) is a conical positioning needle fixedly arranged at the center of the arc surface at the lower end of the energy gathering groove (2).

4. The portable industrial explosive energy-gathering cover according to claim 3 is characterized in that: The end of the conical positioning needle extends beyond the end of the ring (1).

5. The portable industrial explosive energy-gathering cover according to claim 1 is characterized in that: An anti-slip texture (1-1) is also provided on the interior of the open side of the lower end of the ring (1).

6. The portable industrial explosive energy-gathering cover according to claim 1 is characterized in that: The diameter of the end of the circular ring (1) butting against the end of the medicine roll is greater than the diameter of the end where the energy gathering groove (2) is located.

7. The portable industrial explosive energy-gathering cover according to claim 1 is characterized in that: The end of the positioning structure (3) is also provided with a barb structure (3-1), and the barb structure (3-1) is a plurality of sharp spikes arranged obliquely upwards.

8. An explosive, characterized in that: The explosive is equipped with the portable industrial explosive energy-gathering cover as described in any one of claims 1-6.

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