Hole bottom air spacer for rock-soil blasting

Abstract

The utility model relates to the technical field of blasting devices, discloses a hole bottom air spacer for rock-soil blasting, and solves the problem that the spacer cannot adjust the depth position of explosive in real time, so that the spacer is inconvenient to use. A protection assembly is fixedly arranged on the outer side of a spacer main body, the spacer main body comprises a lifting structure, and the lifting structure is arranged on the outer side of the spacer main body; the lifting structure comprises an air bag, an air inlet is fixedly formed in the upper end of the air bag, a position adjusting structure is movably arranged on the inner side of the lifting structure, gas is inflated into the air bag through the air inlet, the air bag rapidly expands and recovers and jacks up the position adjusting structure to ascend, and the explosive reaches the preset ideal position. The operation process is optimized, time and labor are saved, precision is high, and practicability of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting devices, in particular to a hole bottom air spacer for rock and soil blasting. Background Art

[0002] In blasting construction, especially deep hole blasting in open-pit mine blasting projects, and blastholes with a diameter of more than 90 mm and a depth of more than 10 meters, spacer technology will be used. Bottom or middle spacing can be used. This method can reduce the explosion pressure in the blasthole, reduce or even avoid the impact and crushing of ore and rock caused by coupled charges, expand the range of the fracture zone, and improve the effective utilization rate of explosive blasting energy, thereby reducing the unit consumption of explosives.

[0003] The existing Chinese patent with publication number CN213396801U discloses a blasthole blocking spacer for open-air deep-hole blasting, which includes an air bag, which is connected to a support assembly for supporting the air bag. The support assembly includes a base, a partition and a pillar. The bottom end of the pillar is fixedly connected to the base, and the top end is fixedly connected to the partition. The air bag is located between the base and the partition. The air bag is sleeved on the periphery of the pillar. The periphery of the air bag is provided with a protective plate for protecting the air bag. There are multiple protective plates, and the protective plates are slidably connected to the base. This application can protect the air bag, reduce the phenomenon of explosives placed on the air bag falling due to damage to the air bag, and thus improve the blasting effect of the blasthole. The device cannot adjust the depth position of the explosives in real time, so that a matching spacer needs to be prepared in advance, which greatly reduces the practicality of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a bottom hole air spacer for rock and soil blasting. By adopting the device to work, the problem that the spacer cannot adjust the depth position of explosives in real time and is inconvenient to use is solved.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bottom hole air spacer for rock and soil blasting, comprising a spacer body, a protective component fixedly provided on the outer side of the spacer body, the spacer body comprising a lifting structure, the lifting structure comprising an air bag, an air inlet fixedly provided on the upper end of the air bag, a position adjustment structure movably provided on the inner side of the lifting structure, gas is filled into the air bag through the air inlet, the air bag rapidly expands and recovers and lifts the position adjustment structure up, so that the explosives reach the preset ideal position, which not only optimizes the operation process but also saves time and effort and has high precision, thereby greatly improving the practicality of the device.

[0006] Preferably, the position adjustment structure includes a cavity rod whose lower end is fixedly connected to the air bag, and an explosives storage box is fixedly provided on the upper end of the cavity rod. The height of the explosives storage box itself is not enough to achieve effective position adjustment, and the setting of the cavity rod satisfies the height compensation required for its depth adjustment.

[0007] Preferably, a rubber cover is movably provided on the upper end of the explosive storage box, and the rubber cover prevents foreign matter from entering the deep hole into the explosive storage box, thereby causing an impact.

[0008] Preferably, the protection component includes a fixed plate fixedly connected to the explosive storage box, a first protective plate is fixedly provided on the outer side of the fixed plate, a second protective plate is slidably provided on the inner side of the first protective plate, the fixed plate includes a fixed rod fixedly connected to the explosive storage box, a partition is fixedly provided on the upper end of the fixed rod, a groove and a through hole are provided on the surface of the partition, the groove is provided so that it does not affect the opening and closing of the rubber cover, and the through hole is provided so that it does not affect the use of the air inlet.

[0009] Preferably, an annular groove is provided inside the first protective plate, and a sliding groove is provided on the outer surface of the first protective plate. The arrangement of the first protective plate prevents the device from rubbing against the inner wall of the deep hole during the descent process, thereby preventing the air bag from breaking and failing.

[0010] Preferably, the second protective plate includes a ring plate slidably connected to the ring groove, and a slider slidably connected to the slide groove is fixedly provided on the outer surface of the ring plate. When the first protective plate follows the position adjustment structure to rise, the second protective plate stays in place due to its own weight and detaches from the first protective plate, effectively protecting the air bag from friction with the inner wall of the deep hole after inflation, thereby preventing it from being damaged and deflated.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model proposes a bottom-hole air spacer for rock and soil blasting, comprising a spacer main body, a protective component fixedly provided on the outer side of the spacer main body, the spacer main body comprising a lifting structure, the lifting structure comprising an air bag, an upper end of the air bag being fixedly provided with an air inlet, a position adjustment structure movably provided on the inner side of the lifting structure, and gas is filled into the air bag through the air inlet, the air bag rapidly expands and recovers and lifts up the position adjustment structure to make the explosives reach a preset ideal position, which not only optimizes the operation process but also saves time and effort and has high precision, thereby greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the lifting structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the position adjustment structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the protection component structure of the present utility model.

[0017] In the figure: 1. Spacer body; 11. Lifting structure; 111. Air bag; 112. Air inlet; 12. Position adjustment structure; 121. Cavity rod; 122. Explosive storage box; 123. Rubber cover; 2. Protection assembly; 21. Fixing plate; 211. Fixing rod; 212. Partition; 213. Groove; 214. Through hole; 22. First protective plate; 221. Ring groove; 222. Slide groove; 23. Second protective plate; 231. Ring plate; 232. Slider. DETAILED DESCRIPTION

[0018] 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.

[0019] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0020] Combine Figure 1-2 A bottom-hole air spacer for rock and soil blasting comprises a spacer body 1, a protective component 2 is fixedly provided on the outer side of the spacer body 1, the spacer body 1 comprises a lifting structure 11, the lifting structure 11 comprises an air bag 111, an air inlet 112 is fixedly provided on the upper end of the air bag 111, a position adjustment structure 12 is movably provided on the inner side of the lifting structure 11, gas is filled into the air bag 111 through the air inlet 112, the air bag 111 rapidly expands and recovers and lifts up the position adjustment structure 12 to make the explosives reach a preset ideal position, which not only optimizes the operation process but also saves time and effort and has high precision, thereby greatly improving the practicality of the device.

[0021] Combine Figure 3 The position adjustment structure 12 includes a cavity rod 121 whose lower end is fixedly connected to the air bag 111, and an explosive storage box 122 is fixedly provided on the upper end of the cavity rod 121. The height of the explosive storage box 122 itself is not enough to achieve effective position adjustment, and the setting of the cavity rod 121 satisfies the height compensation required for its depth adjustment.

[0022] Combine Figure 3The upper end of the explosive storage box 122 is movably provided with a rubber cover 123. The setting of the rubber cover 123 prevents foreign matter from entering the explosive storage box 122 in the deep hole, thereby causing an impact.

[0023] Combine Figure 4 The protection component 2 includes a fixed plate 21 fixedly connected to the explosive storage box 122, a first protective plate 22 is fixedly provided on the outer side of the fixed plate 21, and a second protective plate 23 is slidably provided on the inner side of the first protective plate 22. The fixed plate 21 includes a fixed rod 211 fixedly connected to the explosive storage box 122, and a partition 212 is fixedly provided on the upper end of the fixed rod 211. A groove 213 and a through hole 214 are provided on the surface of the partition 212. The groove 213 is provided so that it does not affect the opening and closing of the rubber cover 123, and the through hole 214 is provided so that it does not affect the use of the air inlet 112.

[0024] Combine Figure 4 An annular groove 221 is provided inside the first protective plate 22, and a sliding groove 222 is provided on the outer surface of the first protective plate 22. The arrangement of the first protective plate 22 prevents the device from rubbing against the inner wall of the deep hole during the descent process, thereby preventing the air bag 111 from breaking and failing.

[0025] Combine Figure 4 The second protective plate 23 includes a ring plate 231 that is slidably connected to the ring groove 221. The outer surface of the ring plate 231 is fixedly provided with a slider 232 that is slidably connected to the slide groove 222. When the first protective plate 22 follows the position adjustment structure 12 to rise, the second protective plate 23 stays in place due to its own weight and separates from the first protective plate 22, effectively protecting the air bag 111 from friction with the inner wall of the deep hole after inflation, thereby preventing it from being damaged and deflated.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottom hole air spacer for rock and soil blasting, comprising a spacer body (1), a protective assembly (2) fixedly provided on the outer side of the spacer body (1), characterized in that: The spacer body (1) includes a lifting structure (11), the lifting structure (11) includes an air bag (111), an air inlet (112) is fixedly provided at the upper end of the air bag (111), and a position adjustment structure (12) is movably provided inside the lifting structure (11).

2. The bottom hole air spacer for rock blasting according to claim 1, characterized in that: The position adjustment structure (12) comprises a cavity rod (121) whose lower end is fixedly connected to the air bag (111); an explosive storage box (122) is fixedly provided at the upper end of the cavity rod (121).

3. The bottom hole air spacer for rock blasting according to claim 2, characterized in that: The upper end of the explosive storage box (122) is movably provided with a rubber cover (123).

4. The bottom hole air spacer for rock blasting according to claim 1, characterized in that: The protection assembly (2) comprises a fixed plate (21) fixedly connected to the explosive storage box (122), a first protective plate (22) fixedly arranged on the outer side of the fixed plate (21), a second protective plate (23) slidably arranged on the inner side of the first protective plate (22), the fixed plate (21) comprises a fixed rod (211) fixedly connected to the explosive storage box (122), a partition (212) fixedly arranged on the upper end of the fixed rod (211), and a groove (213) and a through hole (214) are provided on the surface of the partition (212).

5. The bottom hole air spacer for rock blasting according to claim 4, characterized in that: An annular groove (221) is provided inside the first protective plate (22), and a sliding groove (222) is provided on the outer surface of the first protective plate (22).

6. The bottom hole air spacer for rock blasting according to claim 4, characterized in that: The second protection plate (23) comprises a ring plate (231) slidably connected to the ring groove (221), and a sliding block (232) slidably connected to the sliding groove (222) is fixedly provided on the outer surface of the ring plate (231).

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