Emergency plugging air bag for roadway

Abstract

The utility model discloses a roadway emergency plugging air bag which comprises an air bag body and plugging cloth, the air bag body is supported on the peripheral wall of a roadway along the outline of the roadway, the air bag body is provided with two free ends located in the length direction of the air bag body, and the two free ends of the air bag body abut against each other. The plugging cloth is connected with the air bag body, the plugging cloth is located on the side, close to an emergency area, of the air bag body, and the area of the plugging cloth is at least larger than that of a center hole defined by the air bag body in a surrounding mode. The roadway emergency plugging air bag is flexible and easy to carry, after the air bag is arranged at the roadway emergency position, the air bag body is inflated to be supported on the circumferential wall of a roadway along the outline of the roadway, the two free ends of the air bag body abut against each other, and therefore the air bag can be attached to the roadway more stably to seal the roadway, and the safety of the roadway is improved. Diffusion of harmful gas and dust is prevented, and life safety of underground workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to an emergency blocking airbag for a tunnel. Background Art

[0002] In order to control the gas in the goaf and prevent the spontaneous combustion of coal left in the goaf, high-gas coal mining faces often need to seal the goaf in the upper corners of the working face, bury gas extraction pipelines to extract gas from the goaf, or bury nitrogen injection and grouting pipelines to control the spontaneous combustion of the goaf, and bury relevant monitoring pipelines.

[0003] At present, the goaf is usually sealed by manually stacking sandbag walls. The sandbags need to be removed and stacked again every time the working face advances a certain distance. The labor intensity is high and the speed is slow. In addition, the sandbag stacking walls are easily damaged and collapsed. The sandbag walls are not airtight and have serious air and gas leakage, which can easily lead to excessive harmful gases in the working face and increase the danger of coal mining. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present utility model provides a tunnel emergency blocking airbag that is adaptive to the tunnel cross-section.

[0006] The tunnel emergency blocking airbag of the embodiment of the utility model comprises:

[0007] An airbag body, the airbag body being supported on the peripheral wall of the roadway along the roadway contour, the airbag body having two free ends in the length direction thereof, the two free ends of the airbag body being pressed against each other;

[0008] A sealing cloth is connected to the airbag body and is located on a side of the airbag body close to the emergency area. The area of ​​the sealing cloth is at least larger than the area of ​​the central hole surrounded by the airbag body.

[0009] The tunnel emergency blocking airbag of the embodiment of the utility model is flexible and easy to carry. After being arranged at the emergency location of the tunnel, the airbag body is inflated and supported on the tunnel wall along the tunnel contour. The two free ends of the airbag body are pressed against each other, so that it can fit the tunnel more stably, seal the tunnel, prevent the spread of harmful gases and dust, and ensure the life safety of underground workers.

[0010] In some embodiments, the airbag body includes an inner airbag and an outer airbag spaced apart along the inner-outer direction, and a skeleton is filled between the inner airbag and the outer airbag.

[0011] In some embodiments, the cross-section of the skeleton is honeycomb-shaped, and the skeleton includes a plurality of elastic support sheets connected in sequence.

[0012] In some embodiments, the junctions between the skeleton, the inner peripheral wall of the outer layer airbag, and the outer peripheral wall of the inner layer airbag have arc-shaped chamfers.

[0013] In some embodiments, the airbag body is provided with a fixing assembly, and the fixing assembly includes a hook and a connecting piece. The hook is fixed on the peripheral wall of the tunnel, and the hook is connected to the airbag body through the connecting piece.

[0014] In some embodiments, the connecting member includes a fixing rope, which is connected to the airbag body and is wound around the hook.

[0015] In some embodiments, the connecting member includes a hanging ring, which is connected to the airbag body and is hung on the hook.

[0016] In some embodiments, there are a plurality of fixing components, and the fixing components are spaced apart and distributed along the lane profile.

[0017] In some embodiments, the surface of the airbag body is coated with a flexible material.

[0018] In some embodiments, a protective net is provided on a side of the airbag body away from the emergency area, the protective net is connected to the peripheral wall of the tunnel, and the airbag body abuts against the protective net. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a tunnel emergency blocking airbag according to an embodiment of the present utility model.

[0020] Figure 2 It is a partial schematic diagram of a tunnel emergency blocking airbag according to an embodiment of the present utility model.

[0021] Figure 3 It is a schematic cross-sectional view of the airbag body of the tunnel emergency blocking airbag according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] 1-airbag body, 11-inner airbag, 12-outer airbag, 13-skeleton, 2-sealing cloth, 3-protective net. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] The tunnel emergency blocking airbag according to the embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the tunnel emergency blocking airbag of the embodiment of the utility model includes: an airbag body 1 and a blocking cloth 2.

[0027] The airbag body 1 is an elongated cylindrical shape. After being inflated, the airbag body 1 is supported on the peripheral wall of the roadway along the roadway contour. The airbag body 1 has two free ends in its length direction. The two free ends of the airbag body 1 press together to enable it to fit more stably with the roadway.

[0028] The sealing cloth 2 is connected to the airbag body 1, and the two can be connected together using Velcro or a mechanical zipper. The sealing cloth 2 is located on the side of the airbag body 1 near the emergency area. The area of ​​the sealing cloth 2 is at least larger than the area of ​​the central hole surrounded by the airbag body 1, so that the sealing cloth 2 and the airbag body 1 can jointly seal the tunnel.

[0029] The tunnel emergency blocking airbag of the embodiment of the present invention is flexible and easy to carry. After being arranged at the emergency location of the tunnel, the airbag body 1 is inflated and supported on the tunnel wall along the tunnel contour. The two free ends of the airbag body 1 are pressed against each other, so that it can fit the tunnel more stably, seal the tunnel, prevent the spread of harmful gases and dust, and ensure the life safety of underground workers.

[0030] In some embodiments, as Figure 3 As shown, the airbag body 1 includes an inner airbag 11 and an outer airbag 12 spaced apart along the inner and outer directions, and a skeleton 13 is filled between the inner airbag 11 and the outer airbag 12. The skeleton 13 supports the inside of the airbag so that the airbag body 1 can be stably attached to the inner wall of the tunnel, ensuring the sealing effect of the airbag body 1 and effectively preventing the spread of harmful gases and dust.

[0031] Alternatively, as Figure 3 As shown, the cross-section of the skeleton 13 is honeycomb-shaped.

[0032] It can be understood that the honeycomb structure has high mechanical strength and stability, and can provide effective support inside the airbag body 1, ensuring that the airbag body 1 fits stably on the inner wall of the tunnel, so that the airbag body 1 can effectively disperse force when compressed, reduce local stress concentration, and thus maintain the stability and integrity of the airbag body 1 when under pressure.

[0033] Furthermore, the honeycomb structure is lighter than the solid structure, which helps to reduce the weight of the entire airbag body 1 and facilitates carrying. It is more economical in the use of materials, can reduce material consumption and reduce costs while meeting strength requirements.

[0034] Alternatively, as Figure 3 As shown, the skeleton 13 includes a plurality of elastic support sheets connected in sequence, that is, the skeleton 13 is made of elastic material.

[0035] It is understandable that the elastic skeleton 13 can adjust its shape according to the change of the internal pressure of the airbag body 1, so as to ensure that the airbag body 1 has a tighter sealing effect on the peripheral wall of the tunnel and improve the sealing effect.

[0036] As the airbag body 1 inflates, the elastic skeleton 13 expands synchronously and evenly, reducing the risk of damage caused by localized stress concentration and increasing the service life of the airbag body 1. Furthermore, the elastic skeleton 13 can cushion the impact force during the inflation process of the airbag body 1, reducing damage to the material of the airbag body 1, especially during rapid inflation.

[0037] Furthermore, the junctions between the skeleton 13 and the inner peripheral wall of the outer layer airbag 12 and the outer peripheral wall of the inner layer airbag 11 have arc-shaped chamfers.

[0038] As can be understood, the curved chamfer can smooth stress transitions at the interface, avoiding stress concentration caused by sharp edges, thereby reducing fatigue damage or fracture caused by stress concentration. The curved chamfer helps provide a better seal during inflation of the airbag body 1, ensuring no leaks between the airbag body 1 and the tunnel wall. The curved chamfer increases the contact area between the frame 13 and the airbag body 1, thereby strengthening the connection between them and improving the stability of the overall structure.

[0039] In some embodiments, the airbag body 1 is provided with a fixing assembly (not shown in the figure), which includes a hook and a connector. The hook is anchored to the peripheral wall of the tunnel by drilling, and the hook is connected to the airbag body 1 via the connector. The two cooperate to fix the airbag body 1, thereby achieving tunnel blocking.

[0040] Optionally, the connecting member includes a fixing rope connected to the airbag body 1 and wound around the hook. Alternatively, the connecting member includes a lifting ring connected to the airbag body 1 and hung on the hook.

[0041] Furthermore, there are multiple fixing components, and the fixing components are distributed at intervals along the lane contour, thereby improving the fixing effect of the airbag body 1.

[0042] In some embodiments, the contact position between the airbag body 1 and the tunnel section is coated with a fire-resistant and wear-resistant flexible material to prevent the irregular sharp corners of the tunnel section from damaging the airbag body 1 and to increase the service life of the airbag body 1.

[0043] In addition, P4U smart coating may be applied on the surface of the airbag body 1 to improve the toughness of the airbag body 1 and enhance the impact resistance of the airbag body 1 .

[0044] In some embodiments, as Figure 1 As shown, a protective net 3 is provided on the side of the airbag body 1 away from the emergency area. The protective net 3 is connected to the peripheral wall of the tunnel, and the airbag body 1 is against the protective net 3.

[0045] It can be understood that the protective net 3 and the blocking cloth 2 jointly constrain the inflation path of the airbag body 1 and further fix the airbag body 1 to ensure the blocking effect and impact resistance of the airbag body 1.

[0046] In summary, the tunnel emergency blocking airbag of the embodiment of the utility model replaces the traditional sandbag wall, is flexible and easy to carry, and after being arranged in the tunnel emergency area, can more quickly block emergency areas such as the corners of the coal mining working face, avoid gas accumulation caused by air leakage in the goaf, and prevent the occurrence of gas over-limit accidents; at the same time, the airbag body 1 can be quickly installed and dismantled and transferred, and has obvious practical effects and economic value.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0052] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A tunnel emergency blocking airbag, characterized in that: include: An airbag body, the airbag body being supported on the peripheral wall of the roadway along the roadway contour, the airbag body having two free ends in the length direction thereof, the two free ends of the airbag body being pressed against each other; A sealing cloth is connected to the airbag body and is located on a side of the airbag body close to the emergency area. The area of ​​the sealing cloth is at least larger than the area of ​​the central hole surrounded by the airbag body.

2. The tunnel emergency blocking airbag according to claim 1, characterized in that: The airbag body comprises an inner airbag and an outer airbag which are spaced apart along the inner and outer directions, and a skeleton is filled between the inner airbag and the outer airbag.

3. The tunnel emergency blocking airbag according to claim 2, characterized in that: The cross-section of the skeleton is honeycomb-shaped, and the skeleton comprises a plurality of elastic support sheets connected in sequence.

4. The tunnel emergency blocking airbag according to claim 3, characterized in that: The connection between the skeleton, the inner peripheral wall of the outer layer airbag and the outer peripheral wall of the inner layer airbag has an arc-shaped chamfer.

5. The tunnel emergency blocking airbag according to claim 1, characterized in that: The airbag body is provided with a fixing assembly, which includes a hook and a connecting piece. The hook is fixed on the peripheral wall of the tunnel, and the hook is connected to the airbag body through the connecting piece.

6. The tunnel emergency blocking airbag according to claim 5, characterized in that: The connecting member includes a fixing rope connected to the airbag body, and the fixing rope is wound around the hook.

7. The tunnel emergency blocking airbag according to claim 5, characterized in that: The connecting piece includes a hanging ring, which is connected to the airbag body and is hung on the hook.

8. The tunnel emergency blocking airbag according to claim 5, characterized in that: There are multiple fixing components, and the fixing components are distributed at intervals along the lane profile.

9. The tunnel emergency blocking airbag according to claim 1, characterized in that: The surface of the airbag body is coated with a flexible material.

10. The tunnel emergency blocking airbag according to claim 1, characterized in that: A protective net is provided on one side of the airbag body away from the emergency area. The protective net is connected to the peripheral wall of the tunnel, and the airbag body abuts against the protective net.

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