Rock blasting charging structure

Abstract

The utility model discloses a rock blasting charging structure which comprises a fixing rod inserted in a blast hole, a plurality of elastic anchoring pieces are arranged at the front end of the fixing rod, the elastic anchoring pieces incline outwards and extend upwards to abut against the hole wall of the blast hole, a plurality of blasting charges are fixedly arranged on the fixing rod in the extending direction of the blast hole, and the blasting charges are arranged on the fixing rod. The tail end of the fixing rod is provided with a plugging assembly for plugging the blast hole. The fixing rod is arranged in the blast hole, the blasting charge is fixed on the fixing rod, so that the blasting charge is fixedly installed in the blast hole, meanwhile, the front end of the fixing rod is connected with the blast hole in an anchoring mode through the elastic anchoring piece, the plugging assembly is arranged at the tail end of the fixing rod to plug the blast hole, and the purpose of preventing punching can be effectively achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock crushing, in particular to a rock blasting charge structure. Background Art

[0002] Rock blasting is a mechanical process that utilizes the explosive force of explosives to apply load to rock, causing its destruction. However, in existing technologies, explosive charges are typically pushed to a designated location in a blasthole using a packing rod. This poses a risk of the charge sliding deeper into the blasthole when the blasthole is inclined. Furthermore, to maximize the energy from the explosive explosion and improve the rock blasting effect, existing technologies typically use taphole mud for sealing, which often results in inadequate sealing and perforation. Summary of the Invention

[0003] The main purpose of the utility model is to provide a rock blasting charge structure, aiming to at least solve one of the technical problems existing in the background technology.

[0004] To this end, the rock blasting charging structure provided by the utility model includes a fixing rod inserted in the blast hole, and a plurality of elastic anchoring plates are provided at the front end of the fixing rod. The elastic anchoring plates extend outward and upward and abut against the wall of the blast hole. A plurality of explosive packs are fixed on the fixing rod along the extension direction of the blast hole, and a sealing component for sealing the blast hole is provided on the tail end of the fixing rod.

[0005] Specifically, the sealing assembly includes an expandable plug installed in the mouth of the blast hole and an expansion head installed in the hollow inner cavity of the expandable plug. The expansion head is matched and sleeved outside the fixed rod and is threadedly connected to the fixed rod. The hollow inner cavity of the expandable plug is a conical cavity that is small at the top and large at the bottom.

[0006] Specifically, the expansion head extends from the lower end of the expandable plug and is fixedly connected to the sealing plate.

[0007] Specifically, the space between the blocking plate and the uppermost explosive pack is filled with gun mud.

[0008] Specifically, the expandable plug is a rubber plug.

[0009] Specifically, the explosive pack is tied and fixed on the fixing rod.

[0010] Specifically, a plurality of elastic anchoring sheets are evenly arranged around the outer circumference of the fixing rod.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects:

[0012] By setting a fixing rod in the blast hole and fixing the explosive package on the fixing rod, the explosive package can be fixed in the blast hole. At the same time, the front end of the fixing rod is anchored to the blast hole through an elastic anchoring sheet, and a sealing component is set at the tail end to seal the blast hole, which can effectively prevent punching.

[0013] The sealing assembly consists of an expandable plug and an expansion head with inner and outer conical surfaces. The shock wave generated by the blasting acts on the expansion head, forcing the expandable plug to expand further and fit more closely to the blasthole, thus achieving a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the rock blasting charge structure provided by an embodiment of the utility model;

[0016] Among them: 1. blasthole; 2. fixing rod; 3. elastic anchor plate; 4. explosive pack; 5. sealing assembly; 501. expandable plug; 502. expansion head; 6. sealing plate; 7. blasthole mud. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0020] See also Figure 1 A rock blasting charging structure includes a fixing rod 2 inserted in a blasthole 1, a plurality of elastic anchoring plates 3 are provided at the front end of the fixing rod 2, the elastic anchoring plates 3 extend outward and upward and abut against the wall of the blasthole 1, a plurality of explosive bags 4 are fixed on the fixing rod 2 along the extension direction of the blasthole 1, and a sealing component 5 for sealing the blasthole 1 is provided at the tail end of the fixing rod 2.

[0021] In this embodiment, a fixing rod 2 is provided in the blast hole 1, and the explosive bag 4 is fixed on the fixing rod 2, so that the explosive bag is fixedly installed in the blast hole 1. At the same time, the front end of the fixing rod 2 is anchored to the blast hole 1 by an elastic anchoring sheet 3, and a blocking component 5 is provided at the tail end to block the blast hole 1. Such a design can effectively prevent punching.

[0022] See also Figure 1 In some embodiments, the sealing assembly 5 includes an expandable plug 501 that is matched and installed in the mouth of the blast hole 1, and a rigid expansion head 502 that is matched and installed in the hollow inner cavity of the expandable plug 501. The expansion head 502 is matched and sleeved on the outside of the fixed rod 2 and is threadedly connected to the fixed rod 2. The hollow inner cavity of the expandable plug 501 is a conical cavity that is small at the top and large at the bottom.

[0023] When installing the rock blasting charge structure of the above structure, first fix the explosive bag 4 on the fixed rod 2 by a cable tie, and then insert the fixed rod 2 into the blast hole 1 until the fixed rod 2 abuts against the bottom of the blast hole 1. The elastic anchoring piece 3 is retracted inward and abuts against the inner wall of the blast hole 1 due to the restriction of the inner wall of the blast hole 1, thereby realizing the anchoring connection between the front end of the fixed rod 2 and the blast hole 1. Then, rotate the expansion head 502 to a suitable position, and put the expandable plug 501 on the outside of the expansion head 502. Press the expansion plug to make it tightly plug the mouth of the blast hole 1, so that the blast hole 1 can be blocked. Then, the explosives can be detonated to realize blasting and crushing of the rock.

[0024] In this embodiment, the sealing assembly 5 is composed of an expandable plug 501 and an expansion head 502 with matched inner and outer conical surfaces. The shock wave generated by the blasting acts on the expansion head 502, which will force the expandable plug 501 to expand further and fit more closely with the blasthole 1, thereby achieving a better sealing effect.

[0025] In addition, the fixing rod 2 can be designed to be hollow, so that the detonating guide of the explosive pack 4 can be easily pulled out of the blasthole 1. The charging method can be coupled charging or uncoupled charging, and can be continuous charging or with a set gap. For example, coupled uncoupled charging is used in this embodiment.

[0026] See also Figure 1 To further enhance the plugging effect, an expansion head 502 extends from the lower end of the expandable plug 501 and is fixedly connected to a plugging plate 6. Taphole mud 7 is filled between the plugging plate 6 and the uppermost explosive pack 4. By placing the plugging plate 6 and the taphole mud 7 below the lower end of the expansion head 502, the plugging plate 6 can be used to appropriately compress the taphole mud 7 when the expansion head 502 moves, further ensuring the plugging effect. The expandable plug 501 can be a rubber plug, and multiple elastic anchoring sheets 3 can be evenly arranged in an umbrella shape around the outer circumference of the fixed rod 2.

[0027] Unless otherwise stated, for any technical solution disclosed in the present invention, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range. Those skilled in the art should understand that a preferred numerical range is merely a numerical range that provides a more significant or representative technical effect among a variety of practicable numerical values. Due to the large number of numerical values, it is impossible to enumerate them exhaustively. Therefore, the present invention discloses only some numerical values ​​to illustrate the technical solution of the present invention. Furthermore, the numerical values ​​listed above should not be construed as limiting the scope of protection of the present invention.

[0028] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws to connect), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by a casting process) (except where it is obviously impossible to use an integrated forming process).

[0029] In addition, unless otherwise stated, terms used in any of the technical solutions disclosed in the present invention to express positional relationships or shapes include states or shapes that are similar, analogous, or close thereto. Any component provided by the present invention may be assembled from multiple separate components or may be a single component manufactured using an integral molding process.

[0030] The above embodiments are merely examples to clearly illustrate the present invention and are not intended to limit its implementation. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A rock blasting charge structure, characterized by: The invention comprises a fixing rod (2) inserted into a blasthole (1), a front end of the fixing rod (2) being provided with a plurality of elastic anchoring sheets (3), the elastic anchoring sheets (3) extending outwardly and upwardly and then abutting against the hole wall of the blasthole (1), a plurality of explosive packs (4) being fixedly provided on the fixing rod (2) along the extension direction of the blasthole (1), and a sealing assembly (5) for sealing the blasthole (1) being provided on the rear end of the fixing rod (2).

2. The rock blasting charge structure according to claim 1, characterized in that: The plugging assembly (5) includes an expandable plug (501) installed in the orifice of the blasthole (1) and an expansion head (502) matched and installed in the hollow inner cavity of the expandable plug (501). The expansion head (502) is matched and sleeved outside the fixing rod (2) and is threadedly connected to the fixing rod (2). The hollow inner cavity of the expandable plug (501) is a conical cavity with a smaller upper part and a larger lower part.

3. The rock blasting charge structure according to claim 2, characterized in that: The expansion head (502) extends from the lower end of the expandable plug (501) and is fixedly connected to the sealing plate (6).

4. The rock blasting charge structure according to claim 3, characterized in that: The space between the blocking plate (6) and the uppermost explosive package (4) is filled with tapping mud (7).

5. The rock blasting charge structure according to claim 3, characterized in that: The expandable plug (501) is a rubber plug.

6. The rock blasting charge structure according to any one of claims 1 to 5, characterized in that: The explosive pack (4) is tied and fixed on the fixing rod (2).

7. The rock blasting charge structure according to any one of claims 1 to 5, characterized in that: A plurality of elastic anchoring sheets (3) are evenly arranged around the outer circumference of the fixing rod (2).

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