Auxiliary protection device for blast hole opening

Abstract

The utility model relates to the field of blasting auxiliary equipment, and particularly discloses an auxiliary protection device for opening a blast hole, which comprises a protection cylinder, more than one annular inflatable air bag is arranged on the outer wall of the protection cylinder, and the inflatable air bag is connected with an inflation port. The utility model aims to adapt to blast holes with different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the auxiliary equipment field of blasting, specifically to a kind of auxiliary protection device of blasthole opening. BACKGROUND

[0002] Step blasting, also known as bench blasting, is a stone blasting method that advances in the form of steps. Step blasting is divided into deep-hole step blasting and shallow-hole step blasting according to the different hole diameters and hole depths. In the step blasting operation of a mine, the opening of a blasthole and subsequent protection are crucial. The means and purpose of blasthole protection are to prevent the surrounding debris and other impurities of the blasthole by plugging the blasthole.

[0003] The conventional blasthole protection device is relatively simple in design and can only protect blastholes of specific sizes. When facing blastholes of different diameters, the construction party needs to prepare various specifications of protection devices, which not only increases the difficulty and complexity of construction prop reserves, but also increases the construction cost. UTILITY MODEL CONTENT

[0004] The utility model aims to provide an auxiliary protection device for blasthole opening, which can adapt to blastholes of different sizes.

[0005] To solve the above technical problems, the utility model employs the following technical scheme:

[0006] An auxiliary protection device for blasthole opening includes a protection cylinder, the outer wall of the protection cylinder is provided with one or more annular inflatable air bags, and the inflatable air bags are connected with an inflation port.

[0007] Further, the top of the protection cylinder is provided with a cover plate, the protection cylinder is a hollow structure, a hole is arranged in the cover plate, and the hole is in communication with the hollow structure of the protection cylinder; the device further includes a cover, a handle is arranged on the upper surface of the cover, and the cover is detachably installed in the hole.

[0008] Preferably, the detachable connection structure of the cover is that an external thread is arranged on the cover, an internal thread is arranged on the inner wall of the hole, and the cover is connected with the hole through the internal thread and the external thread.

[0009] Further, the inflatable air bags are three in total; the device further includes a fixing belt, the fixing belt is annularly installed on the outer wall of the protection cylinder and arranged in the gap between the two inflatable air bags, a through hole is arranged on the side wall of the protection cylinder, and the inflation port is arranged on the inner wall of the hollow structure of the protection cylinder through the through hole.

[0010] Further, two handles are arranged on the upper surface of the cover plate, and the two handles are respectively arranged on the two sides of the hole.

[0011] Further, the bottom edge of the protection cylinder is rounded.

[0012] Further, the inflation port is provided with a sealing plug, the sealing plug is provided with an opening communicated with the inflation port, and the sealing plug is in a closed state without external force.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] The utility model discloses a kind of inflatable airbags, after the installation of protective cylinder is completed, by inflating inflatable airbag, the jamming radius of protective cylinder can be changed, and then the blast hole of multiple different sizes can be protected, that is, multiple different sizes of protective devices do not need to be carried for multiple different sizes of blast hole. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is overall structural diagram of the utility model.

[0016] Figure 2 It is the schematic diagram of the cover opening state of the utility model.

[0017] Figure 3 It is the front view of the utility model in un-inflated state.

[0018] Figure 4 It is the installation diagram of inflatable airbag and fixing belt on protective cylinder.

[0019] Figure 5 It is the connection structure diagram of protective cylinder and cover plate.

[0020] Figure 6 It is the structure diagram of protective cylinder.

[0021] Figure 7 It is the installation enlarged view of inflatable airbag and fixing belt on protective cylinder.

[0022] Figure 8 It is the cover structure schematic diagram.

[0023] Figure 9 It is the front view of the utility model in inflated state.

[0024] Interpretation of each reference numeral in the drawing is as follows: 1-cover plate, 2-protective cylinder, 3-inflatable airbag, 4-handle, 5-cover, 6-hole, 7-through hole, 8-inflation port, 9-fixing belt, 10-handle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model, so as to have further understanding of the conception of the utility model, the technical problems solved, the technical features of the technical solutions and the technical effects brought.

[0026] AsFigure 1 、 Figure 3 、 Figure 9 As shown in FIGS. 1-3, an auxiliary protection device for blast hole opening includes a protection cylinder 2, and the outer wall of the protection cylinder 2 is provided with one or more annular inflatable air bags 3, and the inflatable air bags 3 are connected with an inflation port 8. The protection cylinder 2 includes a solid structure and a hollow structure.

[0027] The utility model is used for plugging the blast hole after the blast hole is opened, and prevents the blast hole from being blocked by the surrounding gravel and other impurities. The protection cylinder 2 is inserted into the blast hole to plug the blast hole, and the cover plate 1 is attached to the ground to prevent the protection cylinder 2 from falling into the blast hole. For plugging the blast hole by using the protection device, the tightness of the plugging needs to be ensured to ensure the plugging effect. The utility model increases the inflatable air bag 3, and after the installation of the protection cylinder 2 is completed, the plugging radius of the protection cylinder 2 can be changed by inflating the inflatable air bag 3, and thus the protection of blast holes of various sizes can be realized, that is, multiple protection devices of different sizes are not needed for blast holes of different sizes. Secondly, because the inflatable air bag 3 has certain elasticity and adaptability, it can adapt to blast holes of different sizes, and after the diameter of the inflatable air bag 3 reaches the diameter of the blast hole, the inflatable air bag 3 can continue to be inflated, the extrusion degree of the inflatable air bag 3 on the inner wall of the blast hole is increased, the tightness of the plugging is increased, and thus better sealing and protection effects are achieved, preventing gravel or other impurities from entering the blast hole.

[0028] In addition, the existing protection device has poor adaptability when dealing with complex mine environments. For example, in windy, dusty or uneven terrain areas, the protection effect is greatly reduced, and part of the protection structure is difficult to recycle or reuse after use, causing resource waste and environmental pollution. The utility model is simple to operate, does not need complex installation steps, saves labor and time costs, improves construction efficiency, can maintain stable protection performance in complex mine environments, and is not affected by factors such as wind, dust or uneven terrain.

[0029] The inflatable air bag 3 is made of rubber material with high strength, wear resistance and good air tightness. In order to ensure the durability and reliability of the inflatable assembly, the rubber material is treated to have properties such as anti-aging, anti-wear and anti-high temperature. At the same time, the connecting part of the inflatable air bag 3 is also reinforced to prevent air leakage or falling off during inflation and use. The shape and size of the inflatable assembly match the protection cylinder 2, and the inflatable assembly can be attached to the outer wall of the protection cylinder 2 when not inflated. The shape of the inflated inflatable assembly is usually annular or a combination of multiple annular air bags, which can expand outward uniformly to tightly contact the inner wall of the blast hole and effectively fill the gap between the protection cylinder 2 and the blast hole.

[0030] As Figure 4 、 Figure 8As shown, further, the protective cylinder 2 is a hollow structure, the top of the protective cylinder 2 is provided with a cover plate 1, the cover plate 1 is provided with a hole 6, the hole 6 is communicated with the hollow structure of the protective cylinder 2; further comprising a cover 5, the upper surface of the cover 5 is provided with a handle 10, the cover 5 is detachably installed in the hole 6. The protective cylinder 2 is provided as a hollow structure, after the protective cylinder 2 is inserted into the blast hole, the surrounding rock can be placed into the protective cylinder 2 to increase the weight of the protective cylinder 2, thereby significantly improving the stability of the protective cylinder 2, effectively avoiding the displacement or falling off during the construction process due to external force, and the cover plate 1 and the cover 5 further block the falling of the upper sundries, thereby ensuring better protection effect.

[0031] As shown in Figure 2 , Figure 5 , Figure 8 As shown, preferably, the detachable connection structure of the cover 5 is that the cover 5 is provided with external threads, the inner wall of the hole 6 is provided with internal threads, and the cover 5 is connected with the hole 6 through the internal threads and the external threads. The internal threads and the external threads are provided, so that the cover 5 can be quickly detached from the cover plate 1.

[0032] As shown in Figure 6 , Figure 7 Further, the three inflatable air bags 3 are provided; further comprising a fixing belt 9, the fixing belt 9 is annularly installed on the outer wall of the protective cylinder 2 and is arranged in the gap between the two inflatable air bags 3, the side wall of the protective cylinder 2 is provided with a through hole 7, and the inflation port 8 is arranged on the inner wall of the hollow structure of the protective cylinder 2 through the through hole 7. The position of the inflatable air bag 3 is limited by the fixing belt 9, and then the inflatable air bag 3 is fixed on the outer wall of the protective cylinder 2. The inflation port 8 of the inflatable air bag 3 can be inflated by a manual air pump or an electric air pump. The inflatable air bags 3 are fixed and separated, which not only limits the position of the inflatable air bag 3, but also provides sufficient expansion space for the inflatable air bag 3 when it is inflated.

[0033] Further, the upper surface of the cover plate 1 is provided with two handles 4, and the two handles 4 are arranged on the two sides of the hole 6. The handles 4 are arranged, so that the utility model is convenient to carry and move, and the two handles 4 are arranged, so that the utility model is more stable to carry.

[0034] Further, the bottom edge of the protective cylinder 2 is chamfered. The bottom edge of the protective cylinder 2 is chamfered or beveled, so as to be more smoothly inserted into the blast hole and reduce the damage to the inner wall of the blast hole.

[0035] Further, the inflation port 8 is provided with a sealing plug, the sealing plug is provided with an opening communicated with the inflation port 8, and the sealing plug is in a closed state under no external force. The sealing plug can improve the stability of the inflatable air bag 3 and avoid air leakage. The inflation port 8 is provided with a sealing structure to prevent air leakage, which has been widely applied in the field of inflation equipment. The utility model only applies the sealing structure of the sealing plug to the inflation port 8.

[0036] In the description of the utility model, the "connection", "fixing" can be fixed connection, processing molding, welding, and can also be mechanical connection, and the specific case is understood as the specific meaning of the above terms in the utility model.

[0037] In the description of the utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer" and the like are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, so it cannot be understood as a limitation on the utility model.

[0038] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical scheme of the utility model, and are not limited to them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical scheme described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. An auxiliary protective device for borehole opening, characterized in that: It includes a protective cylinder (2), and the outer wall of the protective cylinder (2) is provided with one or more annular inflatable airbags (3), and the inflatable airbags (3) are connected to an inflation port (8).

2. The auxiliary protective device for borehole opening according to claim 1, characterized in that: The protective cylinder (2) has a hollow structure. A cover plate (1) is installed on the top of the protective cylinder (2). A hole (6) is provided inside the cover plate (1). The hole (6) is connected to the hollow structure of the protective cylinder (2). It also includes a cover (5), the upper surface of which is fitted with a handle (10), and the cover (5) is detachably installed in the hole (6).

3. The auxiliary protective device for borehole opening according to claim 2, characterized in that: The detachable connection structure of the cover (5) is as follows: the cover (5) is provided with external threads, the inner wall of the hole (6) is provided with internal threads, and the cover (5) and the hole (6) are connected by internal threads and external threads.

4. The auxiliary protective device for borehole opening according to claim 2, characterized in that: There are three inflatable airbags (3); It also includes a fixing strap (9), which is installed in a ring on the outer wall of the protective cylinder (2) and is set in the gap between the two inflatable airbags (3). A through hole (7) is provided on the side wall of the protective cylinder (2), and the inflation port (8) passes through the through hole (7) and is set in the inner wall of the hollow structure of the protective cylinder (2).

5. The auxiliary protective device for borehole opening according to claim 2, characterized in that: Two handles (4) are installed on the upper surface of the cover plate (1), and the two handles (4) are respectively installed on both sides of the hole (6).

6. The auxiliary protective device for borehole opening according to claim 1, characterized in that: The bottom edge of the protective cylinder (2) is rounded.

7. The auxiliary protective device for borehole opening according to claim 1, characterized in that: A sealing plug is installed on the air inlet (8). The sealing plug has an opening that connects to the air inlet (8). The sealing plug is in a closed state when there is no external force.

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