A portable explosion protection device for underground ore mining

Abstract

The present invention discloses a portable explosion protection device for underground ore mining, which relates to the field of mine blasting technology. The device comprises a protection unit for cooperating with the mine tunnel ground to form a sealed protection space, providing all-round and no-dead-angle protection for personnel entering the protection space. The protection unit can be folded and retracted, and the protection device is configured as a semicircular structure, cooperating with the ground to form a sealed protection space, which has a good protection effect on personnel. The semicircular structure can guide air flow more smoothly and has less resistance to wind, thereby reducing the airflow impact on the protective cover during explosion, and the device can be folded and carried.

Description

Technical Field

[0001] The present invention relates to the technical field of mine blasting, in particular to a portable explosion protection device for underground ore mining. Background Art

[0002] In large-scale projects such as railways, mines, and reservoirs, blasting technology plays a key role.

[0003] Blasting technology is used in digging tunnels in mountains and demolishing old buildings in cities.

[0004] In existing underground mining, explosives are needed to loosen large ores in the mining tunnel so that subsequent ore mining can be carried out. After the explosives are installed on the mine wall, in order to prevent the debris produced by the explosion from causing harm to personnel, the operators often choose to carry out remote blasting at a distance away from the explosion point. At the same time, they also need to wear goggles, protective clothing, etc. Even so, safety accidents caused by being hit by debris still occur from time to time. Therefore, the present application provides a portable explosion protection device for underground ore mining to meet the needs. Summary of the Invention

[0005] The purpose of the present application is to provide a portable explosion protection device for underground ore mining, which is used to prevent people from being injured during blasting.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a portable explosion protection device for underground ore mining, comprising a protection unit for cooperating with the mine tunnel ground to form a sealed protection space, providing all-round and no-dead-angle protection for personnel entering the protection space, and the protection unit can be folded and retracted.

[0007] Preferably, the protection unit includes a first curved plate, a second curved plate, a third curved plate and a curved opening and closing plate, the first curved plate, the second curved plate, the third curved plate and the curved opening and closing plate can enclose a semicircular protection space, the inner wall of the first curved plate contacts the outer wall of the second curved plate, the inner wall of the second curved plate contacts the outer wall of the third curved plate, the inner wall of the third curved plate contacts the outer wall of the curved opening and closing plate, the upper ends of the first curved plate, the second curved plate, the third curved plate and the curved opening and closing plate are all rotatably connected to the mounting shaft through bearings, the first curved plate The bottoms of the arc plate, the second arc plate and the third arc plate are all provided with multiple conical positioning columns, the inner and outer surfaces of the arc opening and closing plate are fixed with opening and closing handles, the upper end of the mounting shaft is installed with a lifting handle, the inner wall of the first arc plate is fixed with a sealing strip that contacts the end of the arc opening and closing plate, the inner concave surfaces of the first arc plate, the second arc plate and the third arc plate are all provided with limiting grooves, and the ends of the second arc plate, the third arc plate and the arc opening and closing plate are all fixed with limiting rods, and one end of the limiting rod is slidably set in the corresponding limiting groove.

[0008] Preferably, a gravity positioning mechanism is also included, which includes a first horizontal plate and two L-shaped mounting rods that are suspended. The first horizontal plate is fixedly connected to the lower ends of the two L-shaped mounting rods, and the upper ends of the two L-shaped mounting rods are fixedly connected to the mounting shaft.

[0009] Preferably, it further comprises a jacking unit for providing an upward jacking force to the entire protection unit.

[0010] Preferably, the jacking unit includes a telescopic rod installed at the lower end of the first transverse plate, and a first jacking spring is installed in the inner cavity of the telescopic rod.

[0011] Preferably, the pushing force unit includes two sliders slidably arranged on the first horizontal plate through two slide rails and a column sliding through the first horizontal plate, the two sliders are movably connected to the second horizontal plate slidably arranged on the two L-shaped mounting rods through a first connecting rod, and the two second sliders are movably connected to the column through a second connecting rod, the upper end of the column and the lower end of the second horizontal plate are connected by a second pushing force spring, and the lower end of the second pushing force spring is located between the upper and lower ends of the conical positioning column.

[0012] Preferably, a support plate for expanding the contact area with the ground is fixed to the lower end of the column.

[0013] Preferably, both of the two L-shaped mounting rods are provided with a blocking ring, and the blocking ring is arranged at a position of the L-shaped mounting rod corresponding to the maximum compression amount of the second jacking spring.

[0014] Preferably, drag-reducing pits are provided on the outer walls of the first curved plate, the second curved plate, the third curved plate and the curved opening and closing plate.

[0015] In summary, the technical effects and advantages of the present invention are as follows:

[0016] The present invention has a reasonable structure. The protective device is arranged in a semicircular structure, which cooperates with the ground to form a sealed protective space, thereby providing good protection for personnel. The semicircular structure can guide air flow more smoothly, with less wind resistance, thereby reducing the impact of airflow on the protective cover during explosions. At the same time, the protective device can be folded and carried.

[0017] In the present invention, a gravity positioning mechanism is provided, which allows the conical positioning column to be inserted into the soil through the gravity of the human body, making the positioning operation of the protective cover more convenient and quick;

[0018] In the present invention, a jacking unit is provided, which uses the gravity of the human body to apply an extrusion force to the jacking spring, and applies an upward jacking force to the protective device through its reaction force, which is beneficial for subsequent personnel to pull the protective device out of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a three-dimensional and partially enlarged structural schematic diagram of the present invention;

[0021] Figure 2 This is a structural diagram of a first embodiment of a jacking unit of the present invention;

[0022] Figure 3 This is a structural diagram of a second embodiment of a jacking unit of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle jacking unit;

[0024] Figure 5 For the present invention Figure 1 Schematic diagram of the partial front view structure when not in use;

[0025] Figure 6 For the present invention Figure 1 Schematic diagram of the conical positioning column inserted into the soil structure during use.

[0026] In the figure: 1. Protection unit; 101. First curved plate; 102. Second curved plate; 103. Third curved plate; 104. Curved opening and closing plate; 105. Opening and closing handle; 106. Bearing; 107. Limit rod; 108. Limit groove; 109. Conical positioning column; 1010. Mounting shaft; 1011. Lifting handle; 1012. Sealing strip; 2. Gravity positioning mechanism; 21. First horizontal plate; 22. L-shaped mounting rod; 3. Telescopic rod; 41. Second horizontal plate; 42. Slide rail; 43. Slider; 44. First connecting rod; 45. Second connecting rod; 46. Second top force spring; 47. Column; 48. Blocking ring; 5. Drag reduction pit; 6. Insert column. Implementation Method

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0028] Example: Reference Figure 1 The portable explosion protection device for underground ore mining shown in the figure includes a protection unit 1, which is used to cooperate with the mine tunnel floor to form a sealed protection space, providing all-round and no-dead-angle protection for personnel entering the protection space, and the protection unit 1 can be folded and retracted.

[0029] As a preferred implementation in this embodiment, Figure 1As shown, the protection unit 1 includes a first curved plate 101, a second curved plate 102, a third curved plate 103 and an arc-shaped opening and closing plate 104. The first curved plate 101, the second curved plate 102, the third curved plate 103 and the arc-shaped opening and closing plate 104 can enclose a semicircular protection space. The inner wall of the first curved plate 101 contacts the outer wall of the second curved plate 102, the inner wall of the second curved plate 102 contacts the outer wall of the third curved plate 103, and the inner wall of the third curved plate 103 contacts the outer wall of the arc-shaped opening and closing plate 104. The upper ends of the first curved plate 101, the second curved plate 102, the third curved plate 103 and the arc-shaped opening and closing plate 104 are rotatably connected to the mounting shaft 1010 through bearings 106. The first curved plate 101 is in contact with the outer wall of the second curved plate 102, the inner wall of the second curved plate 102 contacts the outer wall of the third curved plate 103, and the inner wall of the third curved plate 103 contacts the outer wall of the arc-shaped opening and closing plate 104. A plurality of conical positioning columns 109 are provided at the bottom of the curved plate 101, the second curved plate 102 and the third curved plate 103, opening and closing handles 105 are fixed on the inner and outer surfaces of the curved opening and closing plate 104, a lifting handle 1011 is installed on the upper end of the mounting shaft 1010, a sealing strip 1012 is fixed on the inner wall of the first curved plate 101 and contacts the end of the curved opening and closing plate 104, limiting grooves 108 are provided on the inner concave surfaces of the first curved plate 101, the second curved plate 102 and the third curved plate 103, and limiting rods 107 are fixed on the ends of the second curved plate 102, the third curved plate 103 and the curved opening and closing plate 104, and one end of the limiting rod 107 is slidably set in the corresponding limiting groove 108.

[0030] When in use, the protection unit 1 can be rotated and unfolded, as shown in the following figure: Figure 1 As shown, the conical positioning column 109 is inserted into the soil for positioning. Before the explosives explode, the personnel enter the protective cover formed by the first curved plate 101, the second curved plate 102, the third curved plate 103 and the curved opening and closing plate 104 through the opening, and use the opening and closing handle 105 to cover the opening of the curved opening and closing plate 104. At this time, the end of the curved opening and closing plate 104 will contact the sealing baffle 1012. At this time, the protective cover and the ground form a good sealed protection space. The personnel in the sealed protection space can effectively prevent being hit by the debris splashed by the explosion. The protective cover has a semicircular structure. The semicircular arc surface can guide the air flow more smoothly and has less resistance to wind, thereby reducing the airflow impact on the protective cover during the explosion and preventing the protective cover from being washed away by the strong explosion airflow. After completion, the conical positioning column 109 of the protective cover can be pulled out of the soil, and the protective cover can be rotated to fold and close to reduce the space occupied, and the protective cover can be carried by using the carrying handle 1011.

[0031] It should be noted that, first, the ground needs to be flat, which is conducive to the first curved plate 101, the second curved plate 102, the third curved plate 103 and the curved opening and closing plate 104 contacting the ground to form a good sealing state, thereby preventing dust generated by the explosion from entering the interior of the protective cover through this gap; second, the lower ends of the first curved plate 101, the second curved plate 102, the third curved plate 103 and the curved opening and closing plate 104 are located on the same horizontal plane, which is conducive to forming a good seal; third, since the lower end of the curved opening and closing plate 104 is provided with a conical positioning column 109 (the purpose of which is to facilitate the opening and closing movement of the curved opening and closing plate 109), it has poor impact resistance and is easily damaged by the impact airflow generated by the explosion of the explosives. Therefore, when the protective unit 1 is used for prevention, its curved opening and closing plate 109 is set back to the explosion direction of the explosives. The arc-shaped opening and closing plate 101 is arranged to prevent the arc-shaped opening and closing plate 1019 from being damaged by impact. Fourth, a slot can be provided on the sealing strip 1012, and a corresponding plug-in column 6 can be provided on the end of the arc-shaped opening and closing plate 109. When the arc-shaped opening and closing plate 109 covers the opening, the plug-in column 6 on the end of the arc-shaped opening and closing plate 109 is plugged into the slot, so that the arc-shaped opening and closing plate 109 is connected to the first arc-shaped plate 101 as a whole, which is beneficial to improve the impact resistance of the arc-shaped opening and closing plate 109. Fifth, the first arc-shaped plate 101, the second arc-shaped plate 102, the third arc-shaped plate 103 and the arc-shaped opening and closing plate 104 are all sound insulation panels, which are filled with sound insulation materials to prevent the noise generated by the explosion from affecting the human body. Sixth, when using the protective cover, there is no need for personnel to wear goggles, protective clothing, etc., which reduces the burden.

[0032] As a preferred implementation in this embodiment, Figure 1 and Figure 2 As shown, it also includes a gravity positioning mechanism 2, which includes a first horizontal plate 21 and two L-shaped mounting rods 22 that are suspended. The first horizontal plate 21 is fixedly connected to the lower ends of the two L-shaped mounting rods 22, and the upper ends of the two L-shaped mounting rods 22 are fixedly connected to the mounting shaft 1010. Its gravity positioning mechanism 2 uses the gravity of the human body to realize the connection between the conical positioning column 109 and the soil. When in use, a person can sit or squat on the first horizontal plate 21 that is suspended (the person can use both hands to hold the two L-shaped mounting rods 22 to maintain balance). Through the action of the human body's gravity, the conical positioning column 109 is inserted into the soil, making the positioning operation of the protective cover more convenient and quick.

[0033] It should be noted that the lower end of the first horizontal plate is located above the conical positioning column 109, which can prevent the first horizontal plate 21 from contacting the ground and making it impossible for the conical positioning column 109 that is not fully inserted into the soil to continue to be inserted into the soil.

[0034] As a preferred implementation in this embodiment, Figure 3 As shown, it also includes a jacking unit for providing an upward jacking force to the entire protective unit 1.

[0035] As a preferred implementation in this embodiment, Figure 3 As shown, the jacking unit includes a telescopic rod 3 installed at the lower end of the first horizontal plate 21, and a first jacking spring is installed in the inner cavity of the telescopic rod 3. When the conical positioning column 109 is driven into the blast by the gravity of the human body, the lower end of the telescopic rod 3 will contact the ground and cause the first jacking spring to be squeezed. When the blasting is completed and the personnel stand up, the elastic force of the first jacking spring causes it to exert an upward jacking force on the protective cover, which facilitates the subsequent personnel to provide auxiliary force for pulling the conical positioning column 109 out of the soil.

[0036] It should be noted that, first, the lower end of the telescopic rod 3 is located between the upper and lower ends of the conical positioning column 109; second, the telescopic rod 3 and the first jacking spring are used in combination, which has a simple structure and low cost. However, there was a problem at that time. In the process of inserting the conical positioning column 109 into the soil by gravity, the conical positioning column 109 will be affected by the force from the first jacking spring that hinders the downward movement of the conical positioning column 109, which may easily cause the conical positioning column 109 to be inserted into the soil insufficiently or unable to be completely inserted into the soil, resulting in a significant reduction in its impact resistance. In addition, the dust diffused during the explosion can easily overflow into the protective cover through the gap between the lower end of the arc plate and the ground.

[0037] As a preferred implementation in this embodiment, Figure 3 and 4 As shown, the jacking unit includes two sliders 43 slidably arranged on the first transverse plate 21 through two slide rails 42 and a column 47 sliding through the first transverse plate 21. The two sliders 43 are movably connected to the second transverse plate 41 slidably arranged on the two L-shaped mounting rods 22 through a first connecting rod 44, and the two second sliders 43 are movably connected to the column 47 through a second connecting rod 45. The upper end of the column 47 is connected to the lower end of the second transverse plate 41 through a second jacking spring 46. The lower end of the second jacking spring 46 is located between the upper and lower ends of the conical positioning column 109. When in use, a person can sit or squat on the second transverse plate 41 and The weight of the human body causes the second cross plate 41 to move downward. At this time, the two sliders 43 can be driven by the first movable rod 44 to move relative to each other. The relative movement of the two sliders 43 will cause the two second connecting rods 45 to drive the columns 47 to move upward to squeeze the second top spring 46. At the same time, when the weight of the human body acts on the second cross plate 41, it is also equivalent to acting on the protective cover. At this time, the conical positioning column 109 will move downward into the soil under the action of the human body's weight. The conical positioning column 109 moves downward, while the column 47 moves upward relative to the first cross plate 21. When the conical column is fully inserted into the soil, its column is just above the ground, and finally forms a Figure 6As shown, during the entire process, the column 47 does not come into contact with the ground. When the second cross plate 41 loses the effect of human body weight, the elastic force of the second jacking spring will make the lower end of the column 47 come into contact with the ground and exert an upward jacking force on the protective cover. This jacking unit can avoid generating resistance that hinders the downward movement of the conical positioning column 109, and can increase the depth of the conical positioning column 109 inserted into the soil, which is beneficial to improving the impact resistance of the protective cover and preventing it from moving.

[0038] It should be noted that, first, the two first connecting rods 44 are both inclined outward, and the two second connecting rods 45 are both inclined inward; second, the second cross plate 41, the slide rail 42, the slider 43, the first connecting rod 44, the second connecting rod 45 and the second pushing spring 46 constitute the second embodiment as a whole, and the telescopic rod 3 and the first pushing spring constitute the first embodiment. In the first embodiment, the weight of the human body acts on the first cross plate 21, so that its conical positioning column 109 overcomes the resistance brought by the soil, and also acts on the first pushing spring to squeeze the gravity. The gravity is shared, and the compression amount of the first pushing spring is small, so that it generates a smaller upward pushing force F1. In the second embodiment, the weight of the human body acts entirely on the protective cover, so that the conical positioning column 109 can be deeply inserted into the soil. At the same time, the weight of the human body acts entirely on the compressing the second pushing spring 46. Its compression amount is large, and a large upward pushing force F2 can be generated, and F2 is greater than F1.

[0039] As a preferred implementation in this embodiment, Figure 4 As shown, a support plate is fixed to the lower end of the column 47 for expanding the contact area with the ground, so as to prevent the lower end of the column 47 from being inserted into the soil under the elastic force of the second jacking spring 46, thereby avoiding reducing the magnitude of the upward jacking force on the protective cover.

[0040] As a preferred implementation in this embodiment, Figure 3 As shown, a blocking ring 48 is provided on each of the two L-shaped mounting rods 22. The blocking ring 48 is set at the position of the L-shaped mounting rod 22 corresponding to the maximum compression amount of the second push spring 46. The blocking ring 48 can block the movement of the second cross plate 41 to prevent it from excessively descending and causing the second push spring 46 to be damaged due to excessive extrusion.

[0041] As a preferred implementation in this embodiment, Figure 1As shown, the outer walls of the first curved plate 101, the second curved plate 102, the third curved plate 103 and the curved opening and closing plate 104 are all provided with drag reducing pits 5, and the drag reducing pits 5 are designed to reduce the airflow resistance. When the airflow flows through the drag reducing pits 5, the air will be blocked by the drag reducing pits 5 and flow separation will occur, forming a local vortex. This vortex can delay the large-scale airflow separation and reduce the negative pressure area near the surface, thereby reducing the overall wind resistance, and ultimately making the protective cover more stable and not blown away by the strong airflow.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable explosion protection device for underground ore mining, characterized by: It comprises a protection unit (1) for forming a sealed protection space in cooperation with the mine tunnel floor, providing all-round protection without blind spots to personnel entering the protection space, and the protection unit (1) is foldable and retractable; The protection unit (1) includes a first curved plate (101), a second curved plate (102), a third curved plate (103) and an arc-shaped opening and closing plate (104). The first curved plate (101), the second curved plate (102), the third curved plate (103) and the arc-shaped opening and closing plate (104) can enclose a semicircular protection space. The inner wall of the first curved plate (101) contacts the outer wall of the second curved plate (102), the inner wall of the second curved plate (102) contacts the outer wall of the third curved plate (103), and the inner wall of the third curved plate (103) contacts the outer wall of the arc-shaped opening and closing plate (104). The upper ends of the first curved plate (101), the second curved plate (102), the third curved plate (103) and the arc-shaped opening and closing plate (104) are rotatably connected to the mounting shaft (1010) through bearings (106). The first curved plate The bottoms of the first arc plate (101), the second arc plate (102), and the third arc plate (103) are all provided with a plurality of conical positioning columns (109), the inner and outer surfaces of the arc opening and closing plate (104) are all fixed with opening and closing handles (105), the upper end of the mounting shaft (1010) is installed with a lifting handle (1011), the inner wall of the first arc plate (101) is fixed with a sealing strip (1012) in contact with the end of the arc opening and closing plate (104), the inner concave surfaces of the first arc plate (101), the second arc plate (102), and the third arc plate (103) are all provided with limiting grooves (108), and the ends of the second arc plate (102), the third arc plate (103) and the arc opening and closing plate (104) are all fixed with limiting rods (107), and one end of the limiting rod (107) is slidably set in the corresponding limiting groove (108); It also includes a gravity positioning mechanism (2), the gravity positioning mechanism (2) including a first horizontal plate (21) and two L-shaped mounting rods (22) arranged in the air, the first horizontal plate (21) being fixedly connected to the lower ends of the two L-shaped mounting rods (22), and the upper ends of the two L-shaped mounting rods (22) being fixedly connected to the mounting shaft (1010); It also includes a jacking unit for providing an upward jacking force to the entire protection unit (1); The jacking unit includes two sliders (43) slidably arranged on the first transverse plate (21) through two slide rails (42) and a column (47) sliding through the first transverse plate (21), the two sliders (43) are movably connected to the second transverse plate (41) slidably arranged on the two L-shaped mounting rods (22) through a first connecting rod (44), the two sliders (43) are movably connected to the column (47) through a second connecting rod (45), the upper end of the column (47) and the lower end of the second transverse plate (41) are connected through a second jacking spring (46), and the lower end of the second jacking spring (46) is located between the upper and lower ends of the conical positioning column (109).

2. The portable explosion protection device for underground ore mining according to claim 1, characterized in that: The jacking unit comprises a telescopic rod (3) mounted on the lower end of the first transverse plate (21), and a first jacking spring is mounted in the inner cavity of the telescopic rod (3).

3. The portable explosion protection device for underground ore mining according to claim 1, characterized in that: A support plate for expanding the contact area with the ground is fixed to the lower end of the column (47).

4. The portable explosion protection device for underground ore mining according to claim 1, characterized in that: A blocking ring (48) is provided on each of the two L-shaped mounting rods (22), and the blocking ring (48) is arranged at a position of the L-shaped mounting rod (22) corresponding to the maximum compression amount of the second jacking spring (46).

5. The portable explosion protection device for underground ore mining according to claim 1, characterized in that: Drag-reducing pits (5) are provided on the outer walls of the first curved plate (101), the second curved plate (102), the third curved plate (103), and the curved opening and closing plate (104).

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