A gas rapid inflation air bag device for coal mine safety

Abstract

The application discloses a kind of coal mine safety gas rapid inflation air bag devices, it includes: installation at air bag air inlet place's sealed gas nozzle seat;Through the sealed gas nozzle seat and embedded air bag inside and can be extended by splicing conduit axial connection extension's expansion air bag pipe frame, located at the rightmost side and with air bag inner wall and touch the right end of the expansion air bag pipe frame Install pressure sensing element one;Support counterweight frame, upper and lower ends are equipped with telescopic double-wheel group for travel positioning, wherein the middle is equipped with for being sealed with sealed gas nozzle seat and being connected with the left end of the leftmost expansion air bag pipe frame Docking device and control module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine safety, in particular to a gas rapid inflation air bag device for coal mine safety. BACKGROUND

[0002] At present, in the process of coal mining, with the continuous increase of mining depth, gas gradually gathers in the upper corner of the working face in the process of mining in the roadway, which leads to easy leakage in the roadway and gas leakage in the mine, and thus it is necessary to quickly seal the gas leakage area in the roadway. Therefore, the air bag sealing method can quickly and conveniently seal it. However, in the existing air bag device for coal mine, the air bag is not convenient to spread during inflation, and it is difficult to quickly control and guide the inflation process of the air bag. During the inflation process of the air bag, the air bag surface expands unevenly, and the local air bag sheet is stacked and not fully expanded, so that the air bag is compressed during inflation, thereby reducing the rate of gas entering the air bag, and the air bag surface after inflation is not tightly contacted with the mine wall, and the contact is not uniform. The air bag surface and the mine wall form a stack, and the air bag surface at the stack is expanded by the expansion of the air bag inside, which has a tendency to expand, and during the expansion process, the air bag surface and the mine wall produce a large friction, thereby causing the air bag surface to be damaged, making it difficult to find the leakage gap between the air bag and the mine wall in the later period, resulting in poor sealing effect and still hidden gas leakage danger.

[0003] Therefore, the person skilled in the art provides a gas rapid inflation air bag device for coal mine safety to solve the problems in the background art. SUMMARY

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a gas rapid inflation air bag device for coal mine safety, comprising:

[0005] A sealing air nozzle seat is installed at the air bag gas inlet;

[0006] A spread air bag pipe frame is embedded in the air bag and can be axially connected and extended through the splicing pipe, and a pressure sensing element one is installed at the right end of the spread air bag pipe frame which is located at the rightmost side and in contact with the inner wall of the air bag;

[0007] A supporting counterweight frame is provided with telescopic double wheels for positioning at the upper and lower ends, and a docking device for sealing connection with the sealing air nozzle seat and communication with the left end of the leftmost spread air bag pipe frame and a control module are installed in the middle.

[0008] As a preferred technical scheme of the present application, the docking device comprises:

[0009] A longitudinal displacement frame is installed on the support counterweight frame, a front-back displacement frame is installed on the longitudinal displacement frame, an air pump, a sealing collar one and a rotation driving assembly are installed on the front-back displacement frame, the rotation driving assembly comprises a butt joint pipe which is rotatably connected with the sealing collar one at left and right ends and sealingly connected with the sealing air nozzle seat, and a rotary motor for driving the butt joint pipe to rotate;

[0010] A gas guide pipe is rotatably connected with the left end of the sealing collar one and sealingly connected with the output gas end of the air pump at upper and lower ends.

[0011] As a preferred technical solution of the present application, the sealing air nozzle seat comprises:

[0012] A rubber sealing nozzle for elastically sealingly connecting with the butt joint pipe;

[0013] A sealing collar two coaxially sleeved outside the rubber sealing nozzle and rotatably connected.

[0014] As a preferred technical solution of the present application, the expansion air bag pipe frame comprises:

[0015] A gas distribution pipe, coaxially fixed with a splicing ring at left and right ends, and provided with a gas distribution hole on a pipe wall;

[0016] A plurality of groups of expansion air strip rod ring frames coaxially sleeved outside the gas distribution pipe and axially slidable are arranged in odd numbers, the expansion air strip rod ring frame comprises a sliding ring seat at an axis and connected with the gas distribution hole, and expansion air strip rods arranged in a circumferential direction on an outer ring wall of the sliding ring seat and connected with the sliding ring seat, adjacent sliding ring seats are connected through expansion and contraction springs;

[0017] A sealing expansion and contraction cylinder for sealing the space between adjacent expansion air strip rod ring frames and the space between the leftmost and rightmost expansion air strip rod ring frames and the corresponding left and right splicing rings.

[0018] As a preferred technical solution of the present application, the gas distribution pipe wall is further provided with axially directed and circumferentially arranged strip-shaped sliding cavities.

[0019] As a preferred technical solution of the present application, the sliding ring seat comprises:

[0020] An engaging ring sleeve arranged in left-right symmetry, an inner ring wall of the engaging ring sleeve is fixed with radially directed and circumferentially arranged limiting strip rods corresponding to and slidingly connected with the strip-shaped sliding cavities;

[0021] The radial direction and the circumferential arrangement of the corresponding and continuous jet cover of the expansion air strip rod, the jet cover near the one end of the dispersion hole is the flow guide cavity and the speed increasing cavity, the flow guide layer plate is arranged between the left and right side limiting strip rods in the flow guide cavity, and the jet cover inclined wall at the speed increasing cavity is 30° with the radial surface.

[0022] As a preferred technical solution of the present application, the end of the limiting strip rod in the center of the slip ring seat in contact with the strip-shaped slip cavity is clamped by the clamping ring pad.

[0023] As a preferred technical solution of the present application, the right and left side walls in the slip ring seat corresponding to the inside of the jet cover are respectively provided with flow blocking blocks.

[0024] As a preferred technical solution of the present application, the expansion air strip rod comprises:

[0025] The jet nozzle for guiding the radial jet flow is arranged on the rod wall of the expansion air strip rod, and the number of jet nozzles distributed on the expansion air strip rod from the direction close to the dispersion hole to the direction away from the dispersion hole is sequentially increased and arranged in an arithmetic progression.

[0026] The elastic steel wires arranged in axial linear arrangement and radial circumferential arrangement and embedded in the rod wall of the expansion air strip rod are arranged in an arithmetic progression, and the circumferential density of the elastic steel wires arranged in radial circumferential arrangement in the rod wall of the expansion air strip rod from the direction close to the dispersion hole to the direction away from the dispersion hole is sequentially decreased.

[0027] The gas bag ball is arranged at the inner wall of the outer end of the expansion air strip rod, and the outer wall of the gas bag ball is further provided with a pressure sensing element two.

[0028] The limit swing rope is used for connecting and fixing between the adjacent expansion air strip rods arranged in circumferential arrangement.

[0029] As a preferred technical solution of the present application, the splicing ring piece comprises:

[0030] The splicing ring seat is internally provided with a cylindrical hole with a cross structure;

[0031] The clamping column is used for embedding and fixing in the clamping slot with a cross structure arranged on the pipe wall of the splicing pipe;

[0032] The clamping spring is sleeved on the outside of the cylindrical hole, and the inner and outer ends of the clamping spring are respectively connected with the bottom hole wall of the cylindrical hole and the inner wall of the outer end of the clamping column.

[0033] Compared with the prior art, the present application provides a coal mine safety gas rapid inflation air bag device, which has the following beneficial effects:

[0034] 1、The present application is to penetrate the inside of the air bag, through the splicing of the docking between the splicing conduit and the expansion air bag pipe frame, the splicing length is consistent with the standard length after the air bag inflation, so that the air bag inflation is fully inflated, the pressure and pressure data are perceived by the touch of the pressure sensing element and the air bag wall, and then the inflation form effect after the air bag inflation is quickly judged, so that the air bag is released in time, and the air bag is adjusted again, thereby improving the inflation efficiency and the inflation expansion effect of the air bag from the initial to the completion, and improving the sealing effect of the air bag outer wall and the surface to be touched.

[0035] 2、The present application is to position the initial air bag to the position of the air bag inflation after the standard form of the sealing air nozzle seat, so that the flat air bag is lifted and suspended by the expansion air bag pipe frame at the initial stage of air inflation, so that the air bag can quickly spread in all directions during the inflation process, so that the air bag fully adheres to the surface to be contacted after inflation, thereby improving the inflation rate of the air bag, reducing the strength of the external pressure acting on the gas inside the air bag during the inflation process, and enhancing the sealing strength of the contacted surface after the completion of the inflation, and the distribution width, number and position of the air bag inflation point domain are changed by the air distribution structure of the expansion air bar, thereby improving the inflation efficiency of the air bag and the sealing property of the contacted surface after the inflation. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The structure diagram of the coal mine safety gas rapid inflation air bag device of the present application is shown in the figure;

[0037] Figure 2 The local structure of the docking device of the present application is shown in the figure;

[0038] Figure 3 The local structure of the expansion air bag pipe frame of the present application is shown in the figure;

[0039] Figure 4 The structure of A in the present application is shown in the figure;

[0040] Figure 5 The cross section structure of the splicing ring of the present application is shown in the figure;

[0041] Figure 6 The local structure of the expansion air bar of the present application is shown in the figure;

[0042] Figure 7 The local structure of the expansion air bar of the present application is shown in the figure;

[0043] In the figure: 1, support counterweight frame; 2, telescopic double wheel set; 3, docking device; 4, control module; 5, sealed gas nozzle seat; 6, expansion air bag pipe frame; 7, spliced catheter; 8, pressure sensing element one; 31, longitudinal displacement frame; 32, front and rear displacement frame; 33, air pump; 34, rotation driving assembly; 35, air guide pipe; 36, sealing collar one; 51, sealing collar two; 52, rubber sealing nozzle; 61, air diffuser pipe; 62, splicing ring; 63, expansion air strip rod ring frame; 64, sealed expansion and contraction cylinder; 65, expansion and contraction spring; 66, clamping ring pad; 67, slip ring seat; 68, expansion air strip rod; 611, air diffuser hole; 612, strip-shaped sliding cavity; 621, splicing ring seat; 622, cylindrical hole; 623, clamping column; 624, clamping spring; 671, jet cover; 672, drainage layer plate; 673, connection ring sleeve; 674, limiting strip rod; 675, flow blocking block; 681, elastic steel wire; 682, air jet nozzle; 683, pressure sensing element two; 684, air bag ball; 685, swing limiting rope; 71, clamping groove. DETAILED DESCRIPTION

[0044] REFERENCE Figures 1-7 The present application provides a technical solution: a kind of coal mine safety gas rapid inflation air bag device, it includes:

[0045] Sealed gas nozzle seat 5 is installed at air bag gas inlet;

[0046] Expansion air bag pipe frame 6 is inserted into air bag inside and can be axially connected and extended through spliced catheter 7, pressure sensing element one 8 is installed at the right end of the expansion air bag pipe frame 6 located at the rightmost side and contacted with air bag inner wall, through the docking connection between spliced catheter and expansion air bag pipe frame, the splicing length is consistent with the standard length after air bag inflation and swelling, and after air bag inflation and complete expansion, the pressure and pressure data are perceived through the contact between pressure sensing element one and air bag wall, and then the inflation form effect after air bag inflation is quickly judged, so that air bag is released in time, and air bag is adjusted again to inflate, so that the inflation efficiency from the beginning to the completion of air bag inflation and the expansion effect of air bag are improved, and the sealing effect of air bag outer wall and the surface to be contacted is improved;

[0047] Support counterweight frame 1, the upper and lower ends are both installed with telescopic double wheel set 2 for advancing positioning, the middle part is installed with docking device 3 for sealing connection with sealed gas nozzle seat 5 and connected with left end of leftmost expansion air bag pipe frame 6, and control module 4, the docking device is controlled through control module and telescopic double wheel set is controlled, and the monitoring data of pressure sensing element one and expansion air bag pipe frame is collected and fed back, wherein, telescopic double wheel set can compensate the length of the initial fixed length of support counterweight frame in the form of telescopic, so as to quickly adapt to the caliber of different sealing areas.

[0048] In this embodiment, the docking device 3 comprises:

[0049] A longitudinal displacement frame 31 is mounted on the support counterweight frame 1, a front and rear displacement frame 32 is mounted on the longitudinal displacement frame 31, an inflation pump 33, a sealing collar one 36 and a rotation driving assembly 34 are mounted on the front and rear displacement frame 32, and the rotation driving assembly 34 comprises a docking pipe which is rotatably connected with the sealing collar one 36 at left and right ends and sealingly connected with the sealing air nozzle seat 5, and a rotary motor for driving the docking pipe to rotate;

[0050] A gas guide pipe 35 is rotatably connected with the sealing collar one 36 at left and right ends and sealingly connected with the output gas end of the inflation pump 33;

[0051] Through the cooperation and regulation of the longitudinal displacement frame and the front and rear displacement frame, the docking pipe and the sealing air nozzle seat are set to be empty and positioned to be aligned with the hovering position of the sealing air nozzle seat in the standard shape after the air bag is inflated, so that the flat air bag is lifted and hovered by the expansion air bag pipe frame at the initial stage of air bag inflation, which facilitates the rapid all-around expansion of the air bag during the inflation process, so that the air bag fully adheres to the contact sealing surface after the inflation is completed, thereby improving the inflation rate of the air bag, reducing the strength of the external pressure acting on the gas in the air bag during the inflation process, and enhancing the sealing strength of the contact surface after the inflation is completed.

[0052] In this embodiment, the sealing air nozzle seat 5 comprises:

[0053] A rubber sealing nozzle 52 for elastically sealingly connecting with the docking pipe;

[0054] A sealing collar two 51 coaxially sleeved outside the rubber sealing nozzle 52 and rotatably connected;

[0055] It should be noted that the sealing air nozzle seat is mounted in the fixed end portion of the rotation driving assembly in a detachable structure, and the rubber sealing nozzle is connected and fixed with the left end of the final expansion and diffusion air frame body which is connected and spliced with the splicing pipe and the expansion air bag pipe, so that the rubber sealing nozzle and the expansion and diffusion air frame body are driven to rotate by the rotary motor driving the docking pipe to rotate.

[0056] In this embodiment, the expansion air bag pipe frame 6 comprises:

[0057] A diffusion pipe 61, coaxially fixed with a splicing ring 62 at left and right ends, and a diffusion hole 611 is formed in the pipe wall of the diffusion pipe 61;

[0058] A plurality of sets of odd-numbered expansion air rod ring frames 63 are coaxially sleeved outside the air diffuser pipe 61 and can axially slide. The expansion air rod ring frame 63 includes a sliding ring seat 67 located at the shaft center and connected with the air diffuser hole 611, and an expansion air rod 68 arranged in a circumferential manner on the outer ring wall of the sliding ring seat 67 and connected with the sliding ring seat 67. Adjacent sliding ring seats 67 are connected through expansion and contraction springs 65. Through the elastic expansion and contraction of the expansion and contraction springs, the movement and resetting of the sliding ring seat are completed.

[0059] The sealing expansion and contraction cylinder 64 is used for sealing the space between adjacent expansion air rod ring frames 63 and the space between the left and right expansion air rod ring frames 63 and the corresponding left and right splicing ring members 62. The sealing expansion and contraction cylinder can be axially expanded and compressed, covers and blocks the air diffuser hole on the air diffuser pipe wall while cooperating with the sliding ring seat movement, promotes the airflow flowing out of the air diffuser hole to flow to the sliding ring seat, the expansion air rod in turn, and diffuses outward through the expansion air rod. The expansion air rod filled with gas forms a flexible air flow support rod structure, and the introduction of the airflow inflates and expands the air bag inside. The factors of the expansion air bag inflation are not only the gas but also the formed flexible air flow support rod. The air bag is expanded from the inside of the air bag, and the surface of the expansion air rod is continuously expanded and expanded by the gas, so that the surface of the expansion air rod forms a gas mold, thereby reducing the scraping effect on the air bag wall inside, so that the expansion air rod does not scratch the air bag wall while expanding the air bag wall, and has high implementation safety. In particular, it should be noted that when the air bag is from flat to inflation completion, the expansion air rod can be flexibly bent under the pressure of the air bag itself.

[0060] As a preferred embodiment, the maximum outer diameter of the different expansion air rod ring frames is adopted, and the expansion air rod at the maximum outer diameter is arranged in the middle. It should be noted that the maximum outer diameter of the expansion air rod in the middle can be selected as the outer diameter of the air bag after the air bag in the region expands to the standard. The maximum outer diameter of the radius decreases from the middle to both sides, so that when the air bag in a flat state is initially inflated, the gas entering the air bag expands and drains in a mountain-shaped fluid form, thereby accelerating the uniform diffusion of the gas into the air bag and the uniformity of the airflow impact. Especially for the inflation and expansion process of the large air bag, the air bag inside can be inflated in a multi-point domain synchronous manner, which increases the inflation rate of the air bag while making the air bag expand outward with a relatively uniform curved surface, thereby avoiding the air bag layers to be stacked, resulting in that the air bag cannot be completely unfolded and is fixed to the contact surface wall.

[0061] In this embodiment, the air diffuser pipe 61 wall is also provided with an axially directed and circumferentially arranged strip-shaped sliding cavity 612.

[0062] In this embodiment, the sliding ring seat 67 includes:

[0063] The engaging ring sleeve 673 is arranged symmetrically left and right, and the inner ring wall is fixed with the limit strip 674 which is radially directed and arranged in a circumferential row and corresponds to the strip-shaped sliding cavity 612 and is in sliding connection. Through the sliding connection of the limit strip and the strip-shaped sliding cavity, the controllability of the axial sliding of the sliding ring seat is improved.

[0064] The radially directed and circumferentially arranged jet cover 671 corresponds to and communicates with the expansion support air strip rod 68. The jet cavity near and away from the air dispersing hole 611 in the jet cover 671 is respectively a flow guiding cavity and a speed increasing cavity. A radially directed flow guiding layer plate 672 is arranged inside the flow guiding cavity between the left and right limit strips 674. The inclined wall of the jet cover 671 at the speed increasing cavity forms a 30° angle with the radial surface. The flow of the gas flowing out of the air dispersing hole is re-divided and guided by the flow guiding layer plate, so that the gas flow in the speed increasing cavity has a tendency to point to the speed increasing cavity, thereby avoiding the backflow tendency of the gas caused by the unstable air pressure in the air bag and the turning flow out of the air dispersing hole, and making the air pressure in the local expansion support air strip rod unstable.

[0065] In this embodiment, the end of the limit strip 674 in the sliding ring seat 67 at the center in contact with the strip-shaped sliding cavity 612 is clamped by the clamping ring pad 66, thereby improving the controllability of the axial sliding of the expansion support air strip rod ring frame and the stability of the expansion support air strip rod ring frame.

[0066] In this embodiment, the right and left side walls inside the jet cover 671 in the sliding ring seat 67 on the left and right sides are respectively provided with flow blocking blocks 675, so that the gas at the corresponding side can better impact the inclined wall in the jet cover in the speed increasing cavity at the corresponding side, and the sliding ring seat is automatically promoted to axially slide and expand by the continuous impact of the gas.

[0067] In this embodiment, the expansion support air strip rod 68 comprises:

[0068] The air jet nozzle 682 is arranged on the rod wall of the expansion support air strip rod 68 to guide the radial jet of the air flow. The number of air jet nozzles 682 distributed on the expansion support air strip rod 68 in the direction from near to far from the air dispersing hole 611 increases in turn and is arranged in an arithmetic progression, so that the air diffusion intensity of the surface of the expansion support air strip rod in the direction from near to far from the air dispersing hole gradually increases, thereby improving the stability of the root of the expansion support air strip rod with air flow support function, and improving the distribution width of the air flow diffusion point and accelerating the inflation efficiency.

[0069] The elastic steel wires 681 arranged in axial linear and radial circumferential arrangement and embedded in the rod wall of the expansion air strip rod 68, and arranged in equal difference decreasing arrangement by sequentially reducing the circumferential density of the elastic steel wires 681 arranged in radial circumferential arrangement in the rod wall of the expansion air strip rod 68 from the direction close to the direction away from the dispersed air holes, so that the rigidity bending of the expansion air strip rod itself from the direction close to the direction away from the dispersed air holes is sequentially weakened, and at the same time, the expansion air strip rod is avoided from being bent or folded due to the inflation of unstable airflow;

[0070] The gas bag ball 684 is arranged at the inner wall of the outer end of the expansion air strip rod 68, and the outer wall of the gas bag ball 684 is further provided with a pressure sensing element 683. The gas bag ball is a sealed gas structure, and a certain amount of gas is initially filled to facilitate promoting the airflow to fill the expansion air strip rod to maintain the hardness of the flexible airflow rod formed, and the pressure sensing element two is used to sense the pressure and pressure data through the touch, and the use of the expansion air strip rod with the maximum outer diameter in the middle improves the convenience of monitoring whether the shape of the fully inflated gas bag is in the standard state;

[0071] The limit swing rope 685 is used for connecting and retaining between the adjacent expansion air strip rods 68 arranged in circumferential arrangement.

[0072] In the embodiment, the splicing ring 62 comprises:

[0073] The splicing ring seat 621 is internally provided with a cylindrical hole 622 with a cross structure;

[0074] The clamping column 623 is used for embedding and retaining in the clamping groove 71 with a cross structure arranged in the cylindrical hole 622 and the pipe wall of the splicing conduit 7;

[0075] The clamping spring 624 is sleeved outside the cylindrical hole 622, and the inner and outer ends of the clamping spring 624 are connected with the bottom hole wall of the cylindrical hole 622 and the outer end inner wall of the clamping column 623, respectively.

[0076] In the specific implementation, the following steps are included:

[0077] S1: The sealed air nozzle seat is installed at the air bag air inlet;

[0078] S2: According to the standard length of the air bag after inflation and swelling, the splicing conduit is sequentially connected and spliced with the expansion air bag pipe frame, and is introduced into the air bag through the sealed air nozzle seat until the splicing length is consistent with the standard length of the air bag after inflation and swelling, and the connected pipe is sealed and communicated with the sealed air nozzle seat;

[0079] S3: By regulating the support counterweight frame and the occlusion cavity wall through the telescopic double-wheel group, the empty space between the docking pipe and the sealing gas nozzle seat is set and positioned to align with the empty space position of the sealing gas nozzle seat in the standard form after the air bag is inflated;

[0080] S4: Start the inflation pump and the rotary motor to inflate the support air bag pipe frame in a slow self-rotating manner, wherein the air bag is fixed with the sealing gas nozzle seat, and the outer shell of the sealing gas nozzle seat is fixed with the fixed end of the rotary motor.

[0081] S5: Through the data monitoring of the pressure sensing element 1 and the pressure sensing element 2, the change of the air bag inflation form is understood in time.

[0082] The above is only a preferred specific embodiment of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the application within the technical range disclosed by the application, which should be covered within the protection scope of the application.

Claims

1. A rapid gas inflation device for coal mine safety, characterized in that: It includes: The sealing gas nozzle seat (5) is installed at the air bag inlet; The expansion air bag pipe frame (6) is embedded in the air bag and can be axially connected through the splicing conduit (7), and the pressure sensing element (8) is installed at the right end of the expansion air bag pipe frame (6) which is located at the rightmost side and contacts the air bag inner wall; The supporting counterweight frame (1) is installed with telescopic double-wheel groups (2) for positioning at the upper and lower ends, and the docking device (3) for sealing connection with the sealing gas nozzle seat (5) and the left end of the leftmost expansion air bag pipe frame (6) and the control module (4) are installed at the middle part; The expansion air bag pipe frame (6) includes: The air diffuser pipe (61) coaxially fixes the splicing ring (62) at the left and right ends, and the air diffuser pipe (61) has air diffuser holes (611) on the pipe wall; The expansion air strip rod ring frame (63) is coaxially sleeved outside the air diffuser pipe (61) and can axially slide, and the expansion air strip rod ring frame (63) includes a sliding ring seat (67) located at the shaft and connected with the air diffuser hole (611), and an expansion air strip rod (68) arranged in a circular arrangement on the outer ring wall of the sliding ring seat (67) and connected with the sliding ring seat (67), and adjacent sliding ring seats (67) are connected by expansion and contraction springs (65); The sealing expansion and contraction cylinder (64) is used for sealing the space between adjacent expansion air strip rod ring frames (63), and the space between the left and rightmost expansion air strip rod ring frames (63) and their corresponding left and right splicing ring (62); The expansion air strip rod (68) includes: The air jet nozzle (682) is installed on the rod wall of the expansion air strip rod (68) to guide the radial jet flow, and the number of air jet nozzles (682) distributed on the expansion air strip rod (68) from near to far from the air diffuser hole (611) increases in turn and is arranged in an arithmetic progression; The elastic steel wire (681) is arranged in an axial linear arrangement and a radial circular arrangement and embedded in the rod wall of the expansion air strip rod (68), and the circular density of the elastic steel wire (681) arranged in a radial circular arrangement in the rod wall of the expansion air strip rod (68) from near to far from the air diffuser hole (611) decreases in turn and is arranged in an arithmetic progression; The air bag ball (684) is arranged at the outer end wall of the expansion air strip rod (68), and the pressure sensing element (683) is further arranged on the outer wall of the air bag ball (684); The swing limiting rope (685) is used for connecting and fixing between adjacent expansion air strip rods (68) arranged in a circular arrangement.

2. The gas rapid inflation air bag device for coal mine safety according to claim 1, characterized in that: The docking device (3) includes: A longitudinal displacement frame (31) is installed on the support counterweight frame (1), a fore-aft displacement frame (32) is installed on the longitudinal displacement frame (31), an air pump (33), a sealing collar I (36) and a rotation driving assembly (34) are installed on the fore-aft displacement frame (32), the rotation driving assembly (34) comprises a butt joint pipe which is rotatably connected with the sealing collar I (36) at left and right ends and sealingly connected with the sealing air nozzle base (5), and a rotary motor for driving the butt joint pipe to rotate; A gas guide pipe (35) is rotatably connected with the sealing collar I (36) at the left end and sealingly connected with the output gas end of the air pump (33) at the upper and lower ends.

3. The gas rapid inflation air bag device for coal mine safety according to claim 1, characterized in that: The sealing air nozzle base (5) comprises: A rubber sealing nozzle (52) for sealingly connecting with the butt joint pipe; A sealing collar II (51) coaxially sleeved outside the rubber sealing nozzle (52) and rotatably connected.

4. The gas rapid inflation air bag device for coal mine safety according to claim 1, characterized in that: The gas diffusion pipe (61) is further provided with strip-shaped sliding cavities (612) which are axially directed and circumferentially arranged.

5. The gas rapid inflation air bag device for coal mine safety according to claim 1, characterized in that: The sliding ring base (67) comprises: A symmetrical connecting ring sleeve (673) which is fixed with limit strip rods (674) which are radially directed, circumferentially arranged, corresponding to the strip-shaped sliding cavities (612) and slidingly connected; Radially directed and circumferentially arranged jet flow covers (671) corresponding to the expansion support gas rod (68) and connected therewith, the jet flow cavities in the jet flow cover (671) near and away from the gas diffusion hole (611) are respectively a flow guide cavity and a speed increasing cavity, a flow guide layer plate (672) radially directed and installed between the left and right limit strip rods (674) is arranged in the flow guide cavity, and the inclined wall of the jet flow cover (671) at the speed increasing cavity forms a 30° angle with the radial surface.

6. The gas rapid inflation airbag device for coal mine safety according to claim 5, characterized in that: The end of the limit strip rod (674) in the sliding ring base (67) at the center and contacting with the strip-shaped sliding cavity (612) is clamped by a clamping ring pad (66).

7. The gas rapid inflation airbag device for coal mine safety according to claim 5, characterized in that: The right and left side walls in the sliding ring base (67) corresponding to the interior of the jet flow cover (671) are respectively provided with flow blocking blocks (675).

8. The gas rapid inflation air bag device for coal mine safety according to claim 1, characterized in that: The splicing ring member (62) comprises: A splicing ring base (621) which is internally provided with a cylindrical hole (622) of cross structure; A clamping column (623) for embedding into the cylindrical hole (622) and the clamping groove (71) of cross structure arranged on the pipe wall of the splicing guide pipe (7) for fixation; A clamping spring (624) sleeved outside the cylindrical hole (622), the inner and outer ends of the clamping spring (624) are respectively connected with the bottom hole wall of the cylindrical hole (622) and the inner wall of the outer end of the clamping column (623).

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