Adjustable non-coupling charging positioning device

Abstract

The utility model discloses an adjustable non-coupling charging positioning device which comprises a cartridge holding ring and a positioning mechanism, wherein the cartridge holding ring is formed by connecting three or four arc-shaped plates through a telescopic structure, the diameter of the cartridge holding ring can be adjusted, and the positioning mechanism is arranged on the arc-shaped plates and used for limiting the position of a cartridge in a blast hole. According to the adjustable non-coupling charging positioning device, it can be guaranteed that the center of the explosive cartridge coincides with the center of a blast hole in a non-coupling charging structure, the technical problems that the center of the explosive cartridge deviates from the center of the blast hole and the explosive cartridge inclines in the blast hole are solved, and therefore it is guaranteed that the actual charging structure is consistent with the expected charging structure.

Description

Technical Field

[0001] This utility model relates to the field of blasting technology, and in particular to an explosive loading and positioning device. Background Technology

[0002] Blasting, as an economical and efficient construction technique, is widely used in various construction fields such as slope protection, bridge construction, and tunnel construction. However, blasting operations may be subject to rock clamping, resulting in problems such as large explosive charges and significant blasting vibrations. Decoupled charges can effectively solve these problems. Decoupled charges refer to explosives with a diameter smaller than the borehole diameter, leaving a gap between the explosive and the borehole wall.

[0003] However, due to the influence of field conditions, decoupled charges are prone to discrepancies between the desired charge structure and the actual charge configuration. These discrepancies mainly fall into two categories:

[0004] 1. The center of the explosive charge deviates from the center of the borehole. This type of eccentric and uncoupled charge often occurs in tunnel blasting.

[0005] 2. The explosive roll is tilted in the blast hole, which often occurs in deep hole blasting on slopes.

[0006] The discrepancy between the desired charge structure and the actual charge on site may cause a significant difference between the actual blasting and the ideal situation. Therefore, a charge auxiliary device is needed to solve the technical problem of deviations in the actual charge structure. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide an adjustable uncoupled charge positioning device to solve the technical problem of inconsistency between the actual charge structure and the desired charge structure.

[0008] This utility model of an adjustable non-coupled charge positioning device includes a charge cartridge retainer ring with an adjustable diameter, which is composed of three or four arc-shaped plates connected by a telescopic structure, and a positioning mechanism set on the arc-shaped plates to limit the position of the charge cartridge in the borehole.

[0009] Furthermore, the telescopic structure includes arc-shaped inserts and arc-shaped sockets respectively disposed on the two sides of the arc-shaped plate. Two adjacent arc-shaped plates are connected by the arc-shaped inserts and arc-shaped sockets, and the arc-shaped inserts and arc-shaped sockets are fixed together by friction.

[0010] Furthermore, the arc-shaped insert is an elastic rubber plate.

[0011] Furthermore, the positioning mechanism includes a threaded sleeve fixed to the outer surface of the arc-shaped plate and a positioning pin protrusion connected to the threaded sleeve.

[0012] Furthermore, the positioning mechanism includes an insert with several vertical grooves fixed on the outer surface of the arc plate, a sleeve fitted on the insert, a locking bar inserted vertically into the sleeve and the vertical grooves, and a limiting plate fixed to the end of the sleeve.

[0013] The beneficial effects of this utility model are:

[0014] 1. The adjustable uncoupled charge positioning device of this utility model can ensure that the center of the explosive cartridge coincides with the center of the borehole in the uncoupled charge structure, avoiding the technical problems of the center of the explosive cartridge deviating from the center of the borehole and the explosive cartridge tilting in the borehole, thereby ensuring that the actual charge structure is consistent with the desired charge structure.

[0015] 2. The adjustable non-coupled charge positioning device of this utility model has an adjustable diameter of the charge ring, which can adapt to the charge requirements of explosives of different diameters.

[0016] 3. The adjustable non-coupled charge positioning device of this utility model has a positioning mechanism that can be adjusted along the diameter of the borehole, so as to adapt to the charge requirements of boreholes of different diameters. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first implementation structure of the adjustable uncoupled charge positioning device;

[0018] Figure 2 This is a schematic diagram of the curved plate and the telescopic structure;

[0019] Figure 3 This is a schematic diagram of the second implementation structure of the adjustable uncoupled charge positioning device. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] As shown in the figure, the adjustable uncoupled charge positioning device of this embodiment includes a charge ring with an adjustable diameter, which is composed of three or four arc-shaped plates 1 connected by a telescopic structure, and a positioning mechanism set on the arc-shaped plates to limit the position of the charge ring in the borehole.

[0022] In this embodiment, the telescopic structure includes arc-shaped insert plates 2 and arc-shaped sockets 3 respectively disposed on the two sides of the arc-shaped plate. Adjacent arc-shaped plates are connected through the arc-shaped insert plates and arc-shaped sockets, and the arc-shaped insert plates and arc-shaped sockets are fixed together by friction. In this embodiment, the arc-shaped insert plate 2 is an elastic rubber plate. The elasticity of the elastic rubber plate allows it to adapt to the curvature change during the adjustment of the diameter of the drug cartridge retainer ring, and move smoothly in the arc-shaped socket 3. At the same time, there is a certain elastic compressive force between the elastic rubber plate 2 and the arc-shaped socket 3, and the surface of the elastic rubber plate 2 has a large coefficient of friction. This allows the elastic rubber plate 2 to be reliably fixed in the arc-shaped socket 3 by friction after the diameter of the drug cartridge retainer ring is adjusted to the correct position.

[0023] In this embodiment, the positioning mechanism includes a threaded sleeve 4 fixed on the outer surface of the arc plate and a positioning post protrusion 5 connected to the threaded sleeve.

[0024] During loading, the explosive cartridge retainer is first pulled open radially, then the explosive cartridge is placed into the retainer. The retainer is then closed radially to secure the cartridge to the cartridge. The cartridge is then placed into the borehole. When the positioning post 5 contacts the borehole, its extension length is adjusted by rotation, ensuring the end of the positioning post 5 contacts the inner wall of the borehole and that the center of the explosive cartridge is centered within the borehole. Thus, this adjustable, decoupled explosive loading positioning device avoids the technical problems of the explosive cartridge's center deviating from the borehole center and the explosive cartridge tilting within the borehole, thereby ensuring that the actual explosive loading structure matches the desired structure.

[0025] Of course, in different embodiments, the positioning mechanism can also take other forms. For example, the positioning mechanism may also include an insert 6 with several vertical grooves fixed to the outer surface of the arc plate, a sleeve 7 fitted on the insert 6, a locking bar 8 inserted vertically into the sleeve and the vertical grooves, and a limiting plate 9 fixed to the end of the sleeve. By pulling out the locking bar 8, the position of the sleeve 7 can be adjusted radially along the charge ring, so that this adjustable non-coupled charge positioning device can be installed into boreholes of different sizes, with good field adaptability; by reinserting the locking bar 8, the structural stability of the positioning mechanism can be maintained.

[0026] 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 it. 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 spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable, non-coupled charge positioning device, characterized in that: It includes a propellant cartridge holder with an adjustable diameter, consisting of three or four arc-shaped plates connected by a telescopic structure, and a positioning mechanism set on the arc-shaped plates to limit the position of the propellant cartridge in the borehole; The telescopic structure includes arc-shaped inserts and arc-shaped sockets respectively disposed on the two sides of the arc-shaped plate. Two adjacent arc-shaped plates are connected by the arc-shaped inserts and arc-shaped sockets, and the arc-shaped inserts and arc-shaped sockets are fixed by friction.

2. The adjustable non-coupled charge positioning device according to claim 1, characterized in that: The arc-shaped insert is an elastic rubber plate.

3. The adjustable non-coupled charge positioning device according to claim 1, characterized in that: The positioning mechanism includes a threaded sleeve fixed to the outer surface of the arc-shaped plate and a positioning post protrusion connected to the threaded sleeve.

4. The adjustable non-coupled charge positioning device according to claim 1, characterized in that: The positioning mechanism includes an insert with several vertical grooves fixed on the outer surface of the arc plate, a sleeve fitted on the insert, a locking bar inserted vertically into the sleeve and the vertical grooves, and a limiting plate fixed to the end of the sleeve.

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