Blast hole charging structure

Abstract

The utility model relates to the technical field of blasting equipment, in particular to a blasting hole charging structure which comprises an upper cover plate and a lower cover plate, a containing cavity used for containing explosives is formed between the upper cover plate and the lower cover plate, a plurality of movable limiting columns are arranged on the lower cover plate, and the limiting columns move to limit the explosives in the containing cavity. The stand columns penetrate through the upper cover plate and the lower cover plate, the stand columns can be mutually spliced, the upper cover plate and the lower cover plate slide on the stand columns and are used for containing explosives of different heights, and positioning assemblies are further arranged on the upper cover plate and the lower cover plate and are used for positioning the upper cover plate and the lower cover plate which slide on the stand columns. The distance between the upper cover plate and the lower cover plate can be adjusted through sliding of the upper cover plate and the lower cover plate on the stand columns and positioning of the positioning assembly, so that the containing cavity can adapt to explosives of different heights, and the applicability of the explosive charging structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of blasting equipment technology, and more specifically, to a blasting hole charging structure. Background Technology

[0002] Blasting engineering refers to a construction method that uses explosives to excavate earth and rock, and demolish or destroy foundations, buildings, and structures. During blasting operations, a drilling rig or rock drill is used to drill an appropriate number of blasting holes at suitable locations in the rock or soil layer, and then a suitable amount of explosives is placed in these holes. When placing explosives in the blasting holes, a charging structure is typically used to load the explosives, ensuring better blasting results. Explosives are generally cylindrical, and the charging structure typically includes an upper cover plate and a lower cover plate, as well as a movable limiting post mounted on the lower cover plate. By moving the limiting post, explosives of different diameters are confined between the upper and lower cover plates.

[0003] For example, the blast hole charging structure disclosed in patent CN222279539U can accommodate larger explosives when the four limiting posts are slid apart and smaller explosives when they are brought closer together. However, in actual use, the distance between the upper and lower cover plates is fixed. This means that the upper and lower cover plates can only hold explosives of a fixed length, resulting in limited applicability and requiring improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a blast hole charging structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A blasting hole charging structure includes an upper cover plate and a lower cover plate, forming a cavity for placing explosives between the upper and lower cover plates. The lower cover plate is provided with multiple movable limiting posts, which move to limit the explosives located in the cavity. It also includes a column penetrating the upper and lower cover plates, which can be spliced ​​together. The upper and lower cover plates slide on the column to accommodate explosives of different heights. The upper and lower cover plates are also provided with positioning components for positioning the upper and lower cover plates that slide on the column.

[0007] Preferably, the lower cover plate is provided with a T-shaped groove along its radial direction, and four T-shaped grooves are provided along the circumference of the lower cover plate. The limiting post is provided with a T-shaped block that slides in the T-shaped groove.

[0008] Preferably, the lower end face of the lower cover plate is provided with a notch that connects to the T-shaped groove, and the T-shaped block is provided with a guide rod with one end extending out of the notch. A nut is threadedly connected to the extended end of the guide rod, and turning the nut is used to keep the guide rod in the current position.

[0009] Preferably, the upper cover plate is provided with a through hole for the column to pass through. The positioning component includes a connecting block provided on the upper cover plate. The upper end face of the connecting block is provided with a frustum. The frustum is provided with multiple notches along its circumference. The connecting block is externally threaded to a driving block. The driving block is provided with an inclined surface that mates with the frustum. The driving block is threaded to the connecting block to drive the inclined surface to press the frustum so that the frustum hugs the column.

[0010] Preferably, the limiting post is provided with a telescopic extension rod, one end of which extends out of the limiting post, and the extension and retraction of the extension rod is used to abut against the lower end face of the upper cover plate.

[0011] Preferably, the limiting post has a lifting cavity with an upper opening, a blocking ring at the opening of the lifting cavity, the top end of the extension rod extending out of the lifting cavity through the blocking ring, a spring inside the lifting cavity, and a disc at the bottom end of the extension rod that fits against the inner wall of the lifting cavity. The spring is used to push the disc upward.

[0012] Preferably, the column includes a first column and a second column that are spliced ​​together. The top of the first column and the second column are provided with threaded holes, and the bottom of the first column and the second column are provided with threaded posts that are threaded into the threaded holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model allows the upper and lower cover plates to slide on the column and to be positioned by a positioning component, so that the distance between the upper and lower cover plates can be adjusted, thereby enabling the receiving cavity to accommodate explosives of different heights and thus improving the applicability of the explosive loading structure.

[0015] This utility model, through the splicable arrangement of the first and second columns, allows the column to be disassembled into shorter first and second columns during transportation, facilitating the transportation process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a blasting hole charging structure according to the present invention.

[0017] Figure 2 This is a partial exploded view of the first and second columns in this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the upper cover plate, lower cover plate, limiting post, and extension rod in this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of part of the lower cover plate in this utility model.

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0021] Figure 6 This is a schematic diagram of the structure of some of the limiting posts and extension rods in this utility model.

[0022] Figure 7 This is an exploded view of the lower cover plate and the drive block in this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 100. Lower cover plate; 110. Upper cover plate; 120. Column; 121. Drive block; 130. Limiting post; 131. Extension rod;

[0025] 200, First post; 201, Threaded hole; 202, Threaded post; 210, Second post;

[0026] 300, Lifting chamber; 301, Spring; 310, Disc; 320, Plug ring;

[0027] 400, T-slot;

[0028] 500, notch / groove; 510, guide rod; 511, nut;

[0029] 600, T-shaped block;

[0030] 700, Connecting block; 701, Notch. Detailed Implementation

[0031] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0032] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0033] Please see Figures 1-3The explosive loading structure of this embodiment includes an upper cover plate 110 and a lower cover plate 100, forming a cavity for placing explosives between the upper cover plate 110 and the lower cover plate 100. The lower cover plate 100 is provided with a plurality of movable limiting posts 130, which are movable to limit the explosives located in the cavity. It also includes a column 120 penetrating the upper cover plate 110 and the lower cover plate 100. The columns 120 can be spliced ​​together. The upper cover plate 110 and the lower cover plate 100 slide on the column 120 to accommodate explosives of different heights. The upper cover plate 110 and the lower cover plate 100 are also provided with positioning components, which are used to position the upper cover plate 110 and the lower cover plate 100 sliding on the column 120.

[0034] In this embodiment, the column 120 includes a first column 200 and a second column 210 spliced ​​together. The top ends of the first column 200 and the second column 210 are provided with threaded holes 201, and the bottom ends of the first column 200 and the second column 210 are provided with threaded columns 202 that are threaded to the threaded holes 201.

[0035] When it is necessary to splice the column 120, the threaded column 202 can be aligned with the threaded hole 201 and rotated, thereby splicing the first column 200 and the second column 210. Through the above structure, when transporting the column 120, the column 120 can be disassembled into the shorter first column 200 and the second column 210, which facilitates the transportation work.

[0036] In actual use, the lengths of the first column 200 and the second column 210 are available in various specifications, and the columns 120 can be spliced ​​according to specific needs;

[0037] In the process of loading explosives, the first column 200 and the second column 210 are first joined together to form a column 120. The lower cover plate 100 is then installed on the column 120, and the limiting column 130 is installed on the lower cover plate 100. The explosive is placed at the center of the lower cover plate 100, and the limiting column 130 is moved closer to the explosive to limit its movement in the circumference. Then, the upper cover plate 110 is installed on the column 120, and the upper cover plate 110 is moved down so that its bottom end contacts the top end of the explosive, thus limiting the explosive. The installation of the lower cover plate 100, the limiting column 130, and the upper cover plate 110 on the column 120 is repeated in sequence to fix the explosive to the loading structure. Finally, the loading structure containing the explosive is placed into the blast hole.

[0038] The upper cover plate 110 and the lower cover plate 100 slide on the column 120, and the positioning component positions them, so that the distance between the upper cover plate 110 and the lower cover plate 100 can be adjusted, thereby enabling the cavity to accommodate explosives of different heights and thus improving applicability.

[0039] Combination Figures 1-6 As shown, in this embodiment, the lower cover plate 100 is provided with a T-shaped groove 400 along its radial direction, and four T-shaped grooves 400 are provided along the circumference of the lower cover plate 100. The limiting post 130 is provided with a T-shaped block 600 that slides in the T-shaped groove 400, and the T-shaped block 600 is fixedly connected to the bottom end of the limiting post 130.

[0040] In this embodiment, the T-slot 400 and the T-block 600 are configured to guide the limiting post 130 as it slides on the lower cover plate 100. That is, the limiting post 130 can only move along the extension direction of the T-slot 400. When the limiting post 130 moves closer to the center position on the lower cover plate 100, it can limit the cylindrical explosive with a smaller diameter. When the limiting post 130 moves away from the center position on the lower cover plate 100, it can fix the cylindrical explosive with a larger diameter.

[0041] Combination Figures 1-6 As shown, in this embodiment, the lower end face of the lower cover plate 100 is provided with a notch 500 that connects to the T-shaped groove 400. A guide rod 510 with one end extending out of the notch 500 is fixedly connected to the T-shaped block 600. A nut 511 is threadedly connected to the extended end of the guide rod 510. Tightening the nut 511 is used to keep the guide rod 510 in the current position.

[0042] In this embodiment, when it is necessary to limit the explosive in the circumferential direction, the guide rod 510 can be moved sequentially to the center position on the lower cover plate 100, thereby driving the limiting post 130 to move, so that the side wall of the limiting post 130 can abut against the side wall of the explosive to limit the explosive. When it is necessary to keep the limiting post 130 in the current position, the nut 511 can be turned to abut against the lower end face of the lower cover plate 100, thereby fixing the position of the guide rod 510.

[0043] Combination Figures 1-7 As shown, in this embodiment, the upper cover plate 110 is provided with a through hole for the column 120 to pass through. The positioning component includes a connecting block 700 provided on the upper cover plate 110. The connecting block 700 is fixedly connected to the upper end face of the upper cover plate 110. A frustum portion is fixedly connected to the upper end face of the connecting block 700. The frustum portion is provided with a plurality of notches 701 along its circumference. The connecting block 700 is externally threaded to a driving block 121. The driving block 121 is provided with an inclined surface that cooperates with the frustum portion. The driving block 121 is threaded to the connecting block 700 to drive the inclined surface to press the frustum portion so that the frustum portion hugs the column 120.

[0044] In this embodiment, the outer side of the connecting block 700 is provided with an external thread, and the inner side wall of the driving block 121 is provided with an internal thread that mates with the external thread. The two are connected by the thread. The frustum is made of a deformable material (such as plastic) and mates with the notch 701 so that the frustum can hold the column 120 tightly and fix the upper cover plate 110.

[0045] Specifically, when the drive block 121 rotates to connect its thread to the connecting block 700, the inclined extrusion frustum portions can move closer to each other, and the notch portion 701 can shrink, ultimately causing the frustum portions to hug the column 120 so that the upper cover plate 110 is fixed on the column 120.

[0046] The connecting blocks 700 are fixedly connected to the upper end faces of the upper cover plate 110 and the lower cover plate 100, thereby adjusting the distance between the upper cover plate 110 and the lower cover plate 100 to accommodate explosives of different heights, and adjusting the spacing between adjacent explosives, thereby increasing the applicability of the explosive loading structure.

[0047] Combination Figures 1-3 As shown, in this embodiment, a telescopic extension rod 131 is provided inside the limiting post 130. One end of the extension rod 131 extends out of the limiting post 130. The extension and retraction of the extension rod 131 is used to abut against the lower end face of the upper cover plate 110. A lifting cavity 300 with an upper opening is provided inside the limiting post 130. A plugging ring 320 is provided at the opening of the lifting cavity 300. The plugging ring 320 is threaded to the upper side wall of the limiting post 130. The top end of the extension rod 131 extends out of the lifting cavity 300 through the plugging ring 320. A spring 301 is provided inside the lifting cavity 300. A disc 310 that fits against the inner wall of the lifting cavity 300 is provided at the bottom end of the extension rod 131. One end of the spring 301 abuts against the disc 310, and the other end of the spring 301 abuts against the bottom end of the lifting cavity 300. The disc 310 is fixedly connected to the extension rod 131. The spring 301 is used to push the disc 310 upward.

[0048] In this embodiment, under the elastic force of the spring 301, the disc 310 can drive the extension rod 131 to move upward, so that the upper end of the extension rod 131 always abuts against the lower end face of the upper cover plate 110. When the upper cover plate 110 is raised and lowered on the column 120, the extension rod 131 can be raised and lowered accordingly to better fix the explosives at different heights.

[0049] In this embodiment, when loading explosives, the first column 200 and the second column 210 are first spliced ​​together to form a column 120. The lower cover plate 100 is passed through the column 120. Then, by turning the drive block 121, the frustum portion can be tightly gripped by the column 120, thus fixing the lower cover plate 100 on the column 120. Then, the explosive is placed at the center position on the lower cover plate 100. The limiting column 130 is moved closer to the explosive to limit its circumference. Then, the upper cover plate 110 is installed on the column 120. The upper cover plate 110 is moved down so that the bottom end of the upper cover plate 110 contacts the top end of the explosive, thus completing the fixing of the explosive. The installation of the lower cover plate 100, the limiting column 130, and the upper cover plate 110 on the column 120 is repeated in sequence to fix the explosive on the loading structure. Finally, the loading structure containing the explosive is placed into the blast hole.

[0050] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A blasting hole charging structure, comprising an upper cover plate (110) and a lower cover plate (100), the upper cover plate (110) and the lower cover plate (100) form a containing cavity for placing explosives, the lower cover plate (100) is provided with a plurality of movable limiting columns (130), the limiting columns (130) are moved to limit the explosives in the containing cavity, characterized in that: Also include the column (120) through the upper cover plate (110) and the lower cover plate (100), the column (120) can be mutually spliced, the upper cover plate (110) and the lower cover plate (100) are located on the column (120) and slide for accommodating explosives of different heights, the upper cover plate (110) and the lower cover plate (100) are also provided with positioning assembly, and the positioning assembly is used for positioning the upper cover plate (110) and the lower cover plate (100) located on the column (120) and sliding. ​ 2. A borehole charge structure according to claim 1, wherein: The lower cover plate (100) is provided with a T-shaped groove (400) along the radial direction thereof, four T-shaped grooves (400) are arranged along the circumferential direction of the lower cover plate (100), and the limiting column (130) is provided with a T-shaped block (600) slidingly located in the T-shaped groove (400).

3. A borehole charge structure according to claim 2, wherein: The lower end surface of the lower cover plate (100) is provided with a notched groove (500) communicating with the T-shaped groove (400), the T-shaped block (600) is provided with a guide rod (510) extending out of the notched groove (500), the extending end of the guide rod (510) is threadedly connected with a nut (511), and the nut (511) is screwed to keep the guide rod (510) at the current position.

4. A borehole charge structure according to claim 3, wherein: The upper cover plate (110) is provided with a through hole for the column (120) to pass through, and the positioning assembly comprises a connecting block (700) arranged on the upper cover plate (110). The upper end surface of the connecting block (700) is provided with a circular table portion, a plurality of notched portions (701) are arranged on the circular table portion along the circumferential direction thereof, the connecting block (700) is externally threadedly connected with a driving block (121), the driving block (121) is internally provided with a slope matched with the circular table portion, and the driving block (121) is threadedly connected with the connecting block (700) to drive the slope to press the circular table portion, so that the circular table portion tightly holds the column (120).

5. A borehole charge structure according to claim 1, wherein: The limiting column (130) is internally provided with an extendable extension rod (131), one end of the extension rod (131) extends out of the limiting column (130), and the extension of the extension rod (131) is used for abutting against the lower end surface of the upper cover plate (110).

6. A borehole charge structure according to claim 1, wherein: The limiting column (130) is internally provided with a lifting cavity (300) with an open upper end, the opening of the lifting cavity (300) is provided with a plug ring (320), the top end of the extension rod (131) extends out of the lifting cavity (300) through the plug ring (320), the lifting cavity (300) is internally provided with a spring (301), and the bottom end of the extension rod (131) is provided with a disc (310) abutting against the inner wall of the lifting cavity (300). The spring (301) is used for pushing the disc (310) to move upward.

7. A borehole charge structure according to claim 1, wherein: The column (120) comprises a first column (200) and a second column (210) spliced with each other, the top end of the first column (200) and the second column (210) is provided with a threaded hole (201), and the bottom end of the first column (200) and the second column (210) is provided with a threaded column (202) threadedly connected in the threaded hole (201).

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