Smooth surface presplitting blasting charging structure

Abstract

The utility model discloses a smooth surface presplitting blasting charging structure which comprises a mounting plate and a charging device, the section of the mounting plate is arc-shaped, the charging device is mounted on a boss in the middle of the inner surface of the mounting plate, the charging device is cylindrical and is formed by buckling an upper semicircular cylinder and a lower semicircular cylinder, a cover plate A is fixed at one end of the upper semicircular cylinder, and the lower semicircular cylinder is fixed at the other end of the upper semicircular cylinder. A cover plate B is fixed to the opposite end of the lower semicircular cylinder, and wire holes are formed in the cover plate A and the cover plate B at the two ends of the medicine containing device respectively. Scales are longitudinally arranged on the inner surface of the boss; a screw hole is longitudinally reserved in the inner surface of the boss; and the plurality of mounting plates are rigidly spliced as required. By adopting the structure, the operation is simple, the smooth surface pre-splitting charging time is saved, and the labor cost is saved; and meanwhile, it can be guaranteed that the position of a smooth pre-splitting blasting cartridge and blasting parameters are accurate, explosion propagation stability is guaranteed, and the smooth pre-splitting blasting effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of rock blasting technology, and in particular to the design of a smooth pre-splitting blasting charge structure for open-pit mines, highway subgrades and tunnels. Background Technology

[0002] Smooth pre-splitting blasting technology is mainly used in rock blasting for open-pit mines, highway subgrades, and tunnels. This technology effectively protects the rock mass at the edges of open-pit mines, highway subgrades, and tunnel contours, minimizing damage and preserving the rock mass's aesthetically pleasing and complete outline. However, due to its unique decoupled charge method, the explosive cartridges need to be secured to a fixed body according to design parameters. Currently, in smooth pre-splitting blasting, the explosive cartridges and detonating cords are typically secured using bamboo strips or binding tape combined with adhesive tape. This not only results in cumbersome construction processes, low efficiency, and high costs, but also makes it easy to alter the decoupled charge parameters, leading to low charge accuracy and difficulty in guaranteeing the effectiveness of smooth pre-splitting blasting. Summary of the Invention

[0003] To solve the above problems, the present invention adopts a technical solution: a smooth pre-splitting blasting charge structure, including a mounting plate and a charging device. The mounting plate has an arc-shaped cross-section, and the charging device is installed on a boss in the middle of the inner surface of the mounting plate. The charging device is cylindrical and is composed of an upper half-cylinder and a lower half-cylinder fastened together. A cover plate A is fixed at one end of the upper half-cylinder, and a cover plate B is fixed at the opposite end of the lower half-cylinder. Wire holes are respectively provided on the cover plate A and the cover plate B at both ends of the charging device.

[0004] Furthermore, to ensure the accuracy of the longitudinal loading parameters, a scale is set longitudinally on the inner surface of the boss, and screw holes are reserved every 5-7 cm.

[0005] Furthermore, in order for this structure to be used in both deep-hole and shallow-hole smooth-surface pre-splitting blasting, multiple mounting plates are spliced ​​longitudinally, and adjacent mounting plates can be extended as needed. To ensure that the joints are secure and do not swing arbitrarily, connecting plates are used for rigid connection.

[0006] The above structure is simple to operate, saves time on smooth pre-splitting charging, and saves labor costs;

[0007] It can simultaneously ensure the accuracy of the position and blasting parameters of the smooth pre-splitting explosive cartridge, guarantee stable detonation transmission, and improve the effect of smooth pre-splitting blasting. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0009] Figure 2 for Figure 1 Schematic diagram of AA cross-section structure;

[0010] Figure 3 This is a schematic diagram of the loading device structure;

[0011] Figure 4 This is a schematic diagram of a partial scale on the support plate;

[0012] Figure 5 This is a schematic diagram of the mounting plate assembly.

[0013] In the attached diagram: 1. Mounting plate; 2. Loading device; 21. Upper semi-cylinder; 22. Lower semi-cylinder; 3. Wire hole; 4. Boss; 5. Cover plate A; 6. Cover plate B; 7. Connecting plate. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] refer to Figure 1 — Figure 5 ;

[0016] A smooth pre-splitting explosive charge structure includes a mounting plate 1 and a charging device 2. The mounting plate 1 has an arc-shaped cross-section. The charging device 2 is mounted on a boss 4 in the middle of the inner surface of the mounting plate. The inner surface of the boss 4 is arc-shaped and is adapted to the lower outer surface of the charging device 2. The boss 4 extends along the inner surface of the mounting plate and forms an integral part. A threaded hole is provided on the inner surface of the boss 4. A through hole is machined at the bottom of the charging device 2. A screw passes through the through hole and enters the threaded hole to fix the mounting plate 1 and the charging device 2 together.

[0017] The loading device is cylindrical, and is composed of an upper semi-cylinder 21 and a lower semi-cylinder 22 that are fastened together.

[0018] The so-called snap-fit ​​means that there is a protrusion on the lower end face of the upper half cylinder 21 and a groove on the upper end face of the lower half cylinder 22. The protrusion matches the groove, and the protrusion is inserted into the groove, thus snapping the upper half cylinder 21 and the lower half cylinder 22 into one piece.

[0019] A cover plate A5 is fixed at one end of the upper semi-cylinder, and a cover plate B6 is fixed at the opposite end of the lower semi-cylinder. When the upper semi-cylinder 21 and the lower semi-cylinder 22 are fastened together, and the cover plates A5 and B6 at both ends are used to form the medicine loading device 2.

[0020] Both ends of the charging device 2 are provided with wire holes 3 on the cover plates A5 and B6, and the detonating cord passes through the wire holes 3.

[0021] Furthermore, a scale is longitudinally provided on the inner surface of the boss 4. This scale is used to identify the length of the installed drug loading device 2, thereby determining the accuracy of the amount of drug loaded in the drug loading device 2.

[0022] Furthermore, a fixing screw hole is reserved every 5-7 cm longitudinally on the inner surface of the boss 4.

[0023] Furthermore, in order for this structure to be used in both deep-hole and shallow-hole smooth-surface pre-splitting blasting, multiple mounting plates 1 are spliced ​​together as needed. To ensure that the joints are secure and do not swing arbitrarily, adjacent mounting plates 1 are rigidly connected by connecting plates 7.

[0024] The shape of the connecting plate 7 is adapted to the mounting plate. The ends of two adjacent mounting plates 1 are placed inside the connecting plate 7 and fixed with screws.

Claims

1. A smooth pre-ripping blasting charge structure, characterized by, It comprises a mounting plate (1) and a charging device (2), the mounting plate (1) is arc-shaped in cross section, the charging device (2) is installed on the boss (4) in the middle of the inner surface of the mounting plate, the charging device is cylindrical, the charging device is composed of an upper half cylinder (21) and a lower half cylinder (22) buckled together, one end of the upper half cylinder is fixed with a cover plate A (5), the opposite end of the lower half cylinder is provided with a cover plate B (6), the cover plate A (5) and the cover plate B (6) at both ends of the charging device (2) are provided with wire holes (3).

2. A smooth pre-split blasting charge structure according to claim 1, characterised in that, A scale is longitudinally arranged on the inner surface of the boss (4).

3. A smooth pre-ripping blasting charge structure according to claim 2, characterized in that, A bolt hole is reserved every 5-7 cm longitudinally on the inner surface of the boss (4).

4. A smooth pre-splitting blasting charge structure according to claim 1 or 2, characterized in that, A plurality of mounting plates (1) are spliced as required, and adjacent mounting plates (1) are rigidly connected by connecting plates (7).

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