Multi-point shaped charge blasting structure

Abstract

The utility model discloses a multi-point shaped charge structure of shaped charge blasting, including outer tube, inner tube and protective cover, outer tube both sides are provided with through-hole, the shaped charge tube is placed in the inner cavity of inner tube, the right side of shaped charge tube is fixedly equipped with the detonating cord, the lower end of protective cover is provided with the accommodation groove, the lower end of protective cover is provided with the through-hole, and the lower end of protective cover is provided with the through-hole. And the surface of the detonating cord is in contact with the upper end of the accommodating groove. Through the arrangement of the outer pipe and the inner pipe, the shaped charge pipe can be filled, meanwhile, through the arrangement of the through holes in the two sides of the outer pipe, multi-point shaped charge blasting can be carried out towards the two sides through the through holes in the blasting process, and through the arrangement of the protective cover and the movable cover, personnel can conveniently carry out multi-point shaped charge blasting on the two sides after the shaped charge pipe is filled. And the outer pipe, the inner pipe and the right side of the energy-gathered charging pipe are limited and protected, so that the energy-gathered charging pipe is prevented from falling off in the moving or transporting process, and the overall use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosives blasting technology, specifically a multi-point shaped charge structure. Background Technology

[0002] In large-section tunnel excavation blasting, the quality of the wall directly affects the quality, progress and efficiency of the project. When the explosives explode in the rock mass, they will blast down the rock mass within the excavation range, which will inevitably cause damage and destruction to the preserved rock mass, thereby deteriorating the mechanical properties of the preserved rock mass. The most direct manifestation of the damage to the preserved rock mass is over-excavation.

[0003] Numerous experts and scholars have discovered that the principle of smooth blasting has many flaws, which determine its shortcomings: the use of decoupled charges in the perimeter holes of smooth blasting reduces the destructive effect on the hole wall, thus forming a relatively neat wall, but this is not very effective in soft rock strata with well-developed fractures; after decoupled charge blasting, the force around the hole wall is the same, which, in addition to forming ideal fractures, will also form fractures in other directions of the borehole, making it difficult to form a smooth wall.

[0004] For example, the Chinese Utility Model Application provides "A Multi-Point Shaped Explosive Charge Structure" (Announcement No.: CN219368556U). This application includes an outer tube, with brackets fixedly installed at both ends of the inner side of the outer tube. An inner tube is fixedly installed inside the brackets, and a shaped charge tube is provided inside the inner tube. A water bag is provided inside the shaped charge tube, and explosives are provided inside the shaped charge tube, located inside the water bag. A protective mechanism is provided on the outer surface of the outer tube. This utility model adopts the above structure. By turning the knob, the fixed screw drives the slider to slide inside the guide rail, which in turn assists in moving the buffer plate. The movement of the buffer plate assists in moving the inner bonding plate to the outer side of the outer tube, thus facilitating the adaptation of charge tubes of different sizes. During use, the buffer plate and the buffer spring inside the bonding plate can assist in buffering the entire shaped charge tube, thereby avoiding its violent vibration and improving the safety of use.

[0005] In the multi-point shaped charge structure described above, after personnel fill the shaped charge tube into the inner tube, there is a risk that the shaped charge tube may fall off the inner tube during subsequent handling or transportation due to the lack of a structure to limit the shaped charge tube, thus affecting the overall safety of use. Utility Model Content

[0006] The purpose of this utility model is to provide a multi-point shaped charge structure that has the advantage of effectively limiting and protecting the shaped charge tube after it is filled, thus preventing it from falling out of the inner tube.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-point shaped charge structure, comprising an outer tube, an inner tube, and a protective cover. Through holes are provided on both sides of the outer tube. A shaped charge tube is placed inside the inner cavity of the inner tube. A detonating cord is fixedly installed on the right side of the shaped charge tube. A receiving groove is provided at the lower end of the protective cover. The surface of the detonating cord contacts the upper end of the receiving groove. A movable cover is slidably connected to the upper right end of the protective cover.

[0008] As a preferred embodiment, a guide strip is fixedly connected to the outer surface of the protective cover, and a guide groove is provided at the top of the inner cavity of the movable cover, with the surface of the guide groove slidably connected to the surface of the guide strip.

[0009] As a preferred embodiment, the number of through holes is six, and rubber plugs are placed on the surface of the through holes. A rubber connecting strip is fixedly connected between the surfaces of the three rubber plugs.

[0010] As a preferred embodiment, a locking hole is provided at the upper right end of the movable cover, and an elastic locking plate is fixedly connected to the lower right end of the outer surface of the protective cover, and a locking block is fixedly connected to the lower right end of the elastic locking plate.

[0011] As a preferred embodiment, a limiting ring is fixedly connected to the right end of the outer surface of the outer tube, and the limiting ring is annular in shape.

[0012] As a preferred embodiment, a rubber stop is fixedly connected to the right side of the inner cavity of the protective cover, and an opening is provided at the lower end of the rubber stop.

[0013] As a preferred embodiment, supports are fixedly connected between the two ends of the inner cavity of the outer tube and the two ends of the outer surface of the inner tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, through the setting of an outer tube and an inner tube, allows for the simultaneous loading of the shaped charge tube. The through holes on both sides of the outer tube enable multi-point shaped charge blasting during the blasting process. Furthermore, the protective cover and movable cover facilitate the restriction and protection of the outer tube, inner tube, and right side of the shaped charge tube after loading, preventing the tube from falling off during movement or transportation and improving overall safety.

[0016] 2. This utility model, through the setting of guide strips and guide grooves, can effectively limit and guide the movable cover and the protective cover, preventing them from becoming loose. The rubber plug allows personnel to easily seal and protect the through-hole, preventing foreign objects from entering and affecting the safety of the shaped charge tube when not in use. Furthermore, during subsequent blasting operations, personnel can pull the rubber plug out of the through-hole. The rubber connecting strap allows for connection between rubber plugs on the same side, reducing the chance of loss. The design of the holes, elastic plates, and locking blocks allows the elastic plates to insert the locking blocks into the surface of the locking holes during the rotation of the movable cover along the surface of the protective cover. This prevents the movable cover from rotating along the surface of the protective cover when it is used to limit and protect the right side of the shaped charge tube. The rubber blocks provide support between the shaped charge tube and the protective cover during the threaded installation between the protective cover and the outer tube. The brackets provide support and fixation between the outer and inner tubes. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a top view cross-sectional diagram of the outer tube of this utility model;

[0019] Figure 3 This is a bottom view of the protective cover structure of this utility model;

[0020] Figure 4 This utility model Figure 3 A magnified view of section A in the image.

[0021] In the diagram: 1. Outer tube; 2. Rubber connecting strip; 3. Rubber plug; 4. Limiting ring; 5. Protective cover; 6. Elastic clamping plate; 7. Clamping block; 8. Receiving groove; 9. Detonating cord; 10. Clamping hole; 11. Movable cover; 12. Bracket; 13. Inner tube; 14. Shaped charge tube; 15. Through hole; 16. Guide strip; 17. Rubber stop; 18. Guide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example 1:

[0025] Please see Figures 1-4 As shown, this utility model provides a multi-point shaped charge structure, including an outer tube 1, an inner tube 13, and a protective cover 5. Both sides of the outer tube 1 are provided with through holes 15. The inner cavity of the inner tube 13 is filled with a shaped charge tube 14. A detonating cord 9 is fixedly installed on the right side of the shaped charge tube 14. The lower end of the protective cover 5 is provided with a receiving groove 8. The surface of the detonating cord 9 contacts the upper end of the receiving groove 8. A movable cover 11 is slidably connected to the upper end of the right side of the protective cover 5.

[0026] In this technical solution, the outer tube 1 and inner tube 13 allow for the loading of the shaped charge tube 14. Simultaneously, the through holes 15 on both sides of the outer tube 1 enable multi-point shaped charge blasting through the through holes 15 during the blasting process. After the shaped charge tube 14 is loaded into the inner tube 13, the detonating cord 9 is inserted into the receiving groove 8, and the protective cover 5 is placed at the right end of the outer tube 1. Rotating the protective cover 5 allows it to move to the left along the threaded section at the right end of the outer tube 1 until it locks into place. Simultaneously, pushing the movable cover 11 to rotate 180 degrees along the surface of the protective cover 5 causes it to shield the right side of the receiving groove 8. The combined action of the movable cover 11 and the protective cover 5 limits and protects the right side of the outer tube 1, inner tube 13, and shaped charge tube 14, preventing the shaped charge tube 14 from falling off during movement or transportation, thus improving overall safety.

[0027] Example 2:

[0028] Based on Embodiment 1, this utility model is as follows: Figures 1-4As shown, a guide strip 16 is fixedly connected to the outer surface of the protective cover 5. A guide groove 18 is provided at the top of the inner cavity of the movable cover 11. The surface of the guide groove 18 is slidably connected to the surface of the guide strip 16. There are six through holes 15. A rubber plug 3 is placed on the surface of the through holes 15. A rubber connecting strip 2 is fixedly connected between the surfaces of the three rubber plugs 3. A locking hole 10 is provided at the upper right end of the movable cover 11. An elastic locking plate 6 is fixedly connected to the lower right end of the outer surface of the protective cover 5. A locking block 7 is fixedly connected to the lower right end of the elastic locking plate 6. A limit ring 4 is fixedly connected to the right end of the outer surface of the outer tube 1. The limit ring 4 is annular in shape. A rubber block 17 is fixedly connected to the right side of the inner cavity of the protective cover 5. An opening is provided at the lower end of the rubber block 17. A bracket 12 is fixedly connected between the two sides of the inner cavity of the outer tube 1 and the two sides of the outer surface of the inner tube 13.

[0029] In this technical solution, the guide strip 16 and guide groove 18 effectively limit and guide the movable cover 11 and the protective cover 5, preventing them from becoming loose. The rubber plug 3 allows personnel to easily seal the through hole 15, preventing foreign objects from entering and affecting the safety of the shaped charge tube 14 when not in use. Furthermore, during subsequent blasting operations, personnel can pull the rubber plug 3 out of the through hole 15. The rubber connecting strap 2 allows for connection between rubber plugs 3 on the same side, reducing the chance of loss. The locking hole 10 and spring... The elastic plate 6 and the locking block 7 are designed so that when the operator rotates the movable cover 11 along the surface of the protective cover 5, the elastic plate 6 can insert the locking block 7 into the surface of the locking hole 10 under the action of elasticity. This prevents the movable cover 11 from rotating along the surface of the protective cover 5 when the movable cover 11 and the protective cover 5 are used to limit and protect the right side of the shaped charge tube 14. The rubber stop 17 can support the shaped charge tube 14 and the protective cover 5 during the threaded installation between the protective cover 5 and the outer tube 1. The bracket 12 is designed to support and fix the outer tube 1 and the inner tube 13.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A multi-point shaped charge charge structure comprising an outer tube (1), an inner tube (13) and a protective cap (5), characterized in that: Both sides of the outer tube (1) are provided with through holes (15), the inner cavity of the inner tube (13) is placed with a shaped charge tube (14), the right side of the shaped charge tube (14) is fixedly provided with a detonating cord (9), the lower end of the protective cover (5) is provided with a containing groove (8), the surface of the detonating cord (9) is in contact with the upper end of the containing groove (8), and the upper end of the right side of the protective cover (5) is slidably connected with a movable cover (11).

2. A multi-point shaped charge charge structure according to claim 1, characterized in that: The outer surface of the protective cover (5) is fixedly connected with a guide strip (16), the top of the inner cavity of the movable cover (11) is provided with a guide groove (18), and the surface of the guide groove (18) is slidably connected with the surface of the guide strip (16).

3. A multi-point shaped charge charge structure according to claim 1, characterized in that: The number of the through holes (15) is six, the surface of the through holes (15) is placed with rubber plugs (3), and the surfaces of three rubber plugs (3) are fixedly connected with rubber connecting bands (2).

4. A multi-point shaped charge charge structure according to claim 1, characterized in that: The upper end of the right side of the movable cover (11) is provided with a clamping hole (10), the lower end of the right side of the outer surface of the protective cover (5) is fixedly connected with an elastic clamping plate (6), and the lower end of the right side of the elastic clamping plate (6) is fixedly connected with a clamping block (7).

5. A multi-point shaped charge charge structure according to claim 1, characterized in that: The right end of the outer surface of the outer tube (1) is fixedly connected with a limiting baffle ring (4), and the limiting baffle ring (4) is annular.

6. A multi-point shaped charge charge structure according to claim 1, characterized in that: The right side of the inner cavity of the protective cover (5) is fixedly connected with a rubber stop block (17), and the lower end of the rubber stop block (17) is provided with an opening.

7. A multi-point shaped charge charge structure according to claim 1, characterized in that: The periphery of both ends of the inner cavity of the outer tube (1) and the periphery of both ends of the outer surface of the inner tube (13) are fixedly connected with supports (12).

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