Explosive avoiding device for open blasting

Abstract

The utility model relates to the technical field of blasting, and discloses an open blasting cannon-avoiding device which comprises a cannon-avoiding shed, an observation window is embedded in the other outer wall of the cannon-avoiding shed, a liquid storage cavity is formed in the inner end of the side wall, close to the observation window, of the cannon-avoiding shed, and containing cavities are formed in the positions, located on the two sides of the liquid storage cavity, of the side wall of the cannon-avoiding shed. A permanent magnet is arranged at the inner end of the containing cavity, a hinged reinforcing rib penetrating into the containing cavity is slidably clamped in the liquid storage cavity, magnetic coils are arranged on the inner cavity wall of the containing cavity, and a pulsed magnetic field generator connected with the magnetic coils is installed at the included angle in the gun avoiding shed. The pulsed magnetic field generator can quickly drive the magnetic coil to generate a magnetic field, so that the magnetorheological fluid in the liquid storage cavity is solidified within millisecond time to form a rigid buffer layer, and high-strength shock waves are effectively resisted; and collapse caused by insufficient rigidity of a traditional structure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting, in particular to an open-pit blasting shelter device. Background Technique

[0002] In fields such as mine exploitation, building foundation excavation, and road engineering, the annual global open-pit blasting operation volume exceeds tens of billions of tons, and hundreds of thousands of operators are involved. There are safety threats such as explosion shock waves, flying rock damage, seismic waves, and noise during this process.

[0003] Currently, most shelter devices only use ordinary protective covers to resist flying rocks and are difficult to withstand explosion shock waves. Due to the strong destructive power of shock waves, traditional rigid or semi-rigid structures cannot effectively dissipate energy and will also cause secondary damage due to flow around. Therefore, we propose an open-pit blasting shelter device.

[0004] An emergency shelter for blasting in a fire area with the publication (announcement) number CN203924845U discloses an emergency shelter for blasting in a fire area. Its beneficial effects are as follows: the shelter body can withstand greater impacts, has higher strength, the safety protection performance of the shelter is better, it can slow down the impact of flying rocks on the shelter body, improve the service life of the shelter, and further improve its protection performance. Content of the Utility Model

[0005] The purpose of the utility model is to provide an open-pit blasting shelter device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an open-pit blasting shelter device, including a shelter, one outer wall of the shelter is hinged with a shelter door, and an observation window is embedded in the other outer wall of the shelter;

[0007] An inner end of a side wall of the shelter near the observation window is provided with a liquid storage cavity, accommodation cavities are opened on both sides of the side wall of the shelter where the liquid storage cavity is located, permanent magnets are arranged at inner ends of the accommodation cavities, hinged reinforcing ribs penetrating into the accommodation cavities are slidably clamped in the liquid storage cavity, magnetic coils are arranged on inner cavity walls of the accommodation cavities, a pulsed magnetic field generator connected to the magnetic coils is installed at an included angle in the shelter, a pressure sensor electrically connected to the pulsed magnetic field generator is arranged at a lower end of the other outer wall of the shelter, a support plate is installed at an upper end of the inner wall of the shelter, a pump body is installed at an upper end of the support plate, a liquid outlet pipe connected to the liquid storage cavity is arranged at an output end of the pump body, and a connecting conduit is arranged at an input end of the pump body.

[0008] Preferably, the inside of the liquid storage cavity is filled with magnetorheological fluid.

[0009] Preferably, a drain pipe is embedded at a bottom end inside the liquid storage cavity, and a piston is clamped at an inner wall of a liquid outlet end of the drain pipe.

[0010] Preferably, the outer ends of the pulse magnetic field generator and the pressure sensor are respectively provided with a first protective cover and a second protective cover mounted on the blast shelter.

[0011] Preferably, the material of the observation window is transparent tempered glass.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the pressure sensor detects a shock wave, the pulse magnetic field generator will quickly drive the magnetic coil to generate a magnetic field, causing the magnetorheological fluid in the liquid storage cavity to solidify within milliseconds, forming a rigid buffer layer to effectively resist high-intensity shock waves and prevent the traditional structure from collapsing due to insufficient rigidity. At the same time, under the action of the magnetic field, the hinged reinforcing ribs fold inward to form a grid support framework and embed it in the solidified magnetorheological fluid, enhancing the overall stiffness through mechanical interlocking. This design can greatly improve the shock resistance of the blast shelter, effectively disperse the shock wave load, and provide more reliable safety protection for personnel and equipment in open-pit blasting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic overall sectional structural view of the present utility model Figure 1 ;

[0015] Figure 3 is of the present utility model Figure 2 is an enlarged schematic structural view of part A in

[0016] Figure 4 is of the present utility model Figure 2 is an enlarged schematic structural view of part B in

[0017] Figure 5 is a schematic overall sectional structural view of the present utility model Figure 2 .

[0018] In the figure: 1. Blast shelter; 101. Liquid storage cavity; 102. Accommodation cavity; 11. Permanent magnet; 12. Hinged reinforcing rib; 13. Pulse magnetic field generator; 130. Magnetic coil; 14. First protective cover; 15. Drain pipe; 16. Piston; 17. Second protective cover; 18. Pressure sensor; 110. Support plate; 111. Pump body; 112. Liquid outlet pipe; 113. Connecting conduit; 2. Blast shelter door; 3. Observation window. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-5 , the present invention provides the following technical solutions:

[0021] Embodiment 1: An open-pit blasting shelter device, including a shelter shed 1, one outer wall of the shelter shed 1 is hinged with a shelter door 2, and an observation window 3 is embedded in the other outer wall of the shelter shed 1. The material of the observation window 3 is transparent tempered glass.

[0022] During use, the operator enters the shelter shed 1, closes the hinged shelter door 2 to form a closed space, and can view the blasting situation in real time through the transparent tempered glass observation window 3 embedded in the outer wall. Moreover, the observation window 3 made of transparent tempered glass can play a basic protection role.

[0023] Embodiment 2: The technical solutions of this embodiment different from those of Embodiment 1 include: a liquid storage cavity 101 is opened at the inner end of one side wall of the shelter shed 1 close to the observation window 3, accommodation cavities 102 are opened on both sides of the side wall of the shelter shed 1 where the liquid storage cavity 101 is located, a permanent magnet 11 is arranged at the inner end of the accommodation cavity 102, a hinged reinforcing rib 12 penetrating into the accommodation cavity 102 is slidably clamped in the liquid storage cavity 101, magnetic coils 130 are arranged on the inner cavity walls of the accommodation cavities 102, a pulsed magnetic field generator 13 connected to the magnetic coils 130 is installed at the inner corner of the shelter shed 1, a pressure sensor 18 electrically connected to the pulsed magnetic field generator 13 is arranged at the lower end of the other outer wall of the shelter shed 1, a support plate 110 is installed at the upper end of the inner wall of the shelter shed 1, a pump body 111 is installed at the upper end of the support plate 110, a liquid outlet pipe 112 connected to the inside of the liquid storage cavity 101 is arranged at the output end of the pump body 111, a connecting conduit 113 is arranged at the input end of the pump body 111, the inside of the liquid storage cavity 101 is filled with magnetorheological fluid, a drain pipe 15 is embedded at the bottom end inside the liquid storage cavity 101, a piston 16 is clamped on the inner wall of the liquid outlet end of the drain pipe 15, first protective covers 14 and second protective covers 17 installed on the shelter shed 1 are respectively arranged at the outer ends of the pulsed magnetic field generator 13 and the pressure sensor 18. The magnetorheological fluid can be instantaneously solidified in the liquid storage cavity 101 under the action of a magnetic field to play a protective role for the shelter shed 1. The magnetorheological fluid will be discharged to the outside through the drain pipe 15, and the drain pipe 15 can be opened and closed by the piston 16. The first protective cover 14 and the second protective cover 17 can respectively play a protective role for the pulsed magnetic field generator 13 and the pressure sensor 18.

[0024] During use, when the pressure sensor 18 detects a blasting shock wave, it immediately triggers the pulsed magnetic field generator 13 to supply power to the magnetic coil 130. The magnetorheological fluid in the liquid storage cavity 101 instantaneously solidifies under the action of the magnetic field. At the same time, the articulated reinforcing rib 12 is under the cooperative action of the permanent magnet 11 and the magnetic coil 130. The articulated reinforcing rib 12 rotates and folds inward under the action of the magnetic force, forming a "herringbone" or "grid-like" support framework. When the magnetorheological fluid solidifies, the stiffness of the solidified magnetorheological fluid can be improved through the folded articulated reinforcing rib 12. The pump body 111 can supplement the magnetorheological fluid through the liquid outlet pipe 112, and the piston 16 of the liquid discharge pipe 15 resets to discharge liquid after the impact. The liquid storage cavity 101 on the side of the observation window 3 cooperates with the magnetorheological fluid to achieve dynamic buffering of the shock wave, enhancing the protection ability of the blast shelter 1 against explosion shocks, and is applicable to medium- and high-intensity blasting scenarios.

[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Open-air blasting shelter device, including a blasting shelter (1), one outer wall of the blasting shelter (1) is hinged with a blasting shelter door (2), and an observation window (3) is embedded in the other outer wall of the blasting shelter (1); It is characterized in that: An inner end of a side wall of the blasting shelter (1) near the observation window (3) is provided with a liquid storage cavity (101). Accommodating cavities (102) are provided on both sides of the liquid storage cavity (101) on the side wall of the blasting shelter (1). A permanent magnet (11) is arranged at the inner end of the accommodating cavity (102). An articulated reinforcing rib (12) penetrating into the accommodating cavity (102) is slidably clamped in the liquid storage cavity (101). Magnetic coils (130) are arranged on the inner cavity walls of the accommodating cavities (102). A pulsed magnetic field generator (13) connected to the magnetic coils (130) is installed at the inner angle of the blasting shelter (1). A pressure sensor (18) electrically connected to the pulsed magnetic field generator (13) is arranged at the lower end of the other outer wall of the blasting shelter (1). A support plate (110) is installed at the upper end of the inner wall of the blasting shelter (1). A pump body (111) is installed at the upper end of the support plate (110). The output end of the pump body (111) is provided with a liquid outlet pipe (112) connected to the liquid storage cavity (101), and the input end of the pump body (111) is provided with a connecting conduit (113).

2. The open-pit blasting shelter device according to claim 1, characterized in that: The inside of the liquid storage cavity (101) is filled with magnetorheological fluid.

3. The open-pit blasting shelter device according to claim 1, characterized in that: A drain pipe (15) is embedded at the inner bottom end of the liquid storage cavity (101), and a piston (16) is clamped on the inner wall of the liquid outlet end of the drain pipe (15).

4. The open-pit blasting shelter device according to claim 1, wherein: First protective covers (14) and second protective covers (17) installed on the blasting shelter (1) are respectively arranged at the outer ends of the pulsed magnetic field generator (13) and the pressure sensor (18).

5. The open-pit blasting shelter device according to claim 1, characterized in that: The observation window (3) is made of transparent tempered glass.

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