A multi-stage hurricane protection device for mine tunnels and a working method of the device

Abstract

The present invention discloses a multi-stage hurricane-proof device for mine tunnels and a working method of the device, belonging to the technical field of coal mine production safety. It includes a first hurricane-proof mechanism, a second hurricane-proof mechanism and a third hurricane-proof mechanism, each of which includes a hurricane-proof door, a traction mechanism and a trigger mechanism; the hurricane-proof door includes a door frame and an anti-impact body located in the door frame, a pulley is connected to the side of the door frame, and the pulley is embedded in the corresponding slide rail mechanism; the anti-impact body includes a accommodating cavity and a non-Newtonian fluid located in the accommodating cavity. The present invention utilizes the principle of non-Newtonian fluid. As the external pressure increases, the viscosity of the non-Newtonian fluid will also change accordingly. When a large range of roof plates in the goaf instantly fall and generate a hurricane in the tunnel, the non-Newtonian fluid in the anti-impact body can instantly become a hard structure that resists impact under the impact of external force to block the hurricane in the tunnel.

Description

Technical Field

[0001] The invention belongs to the technical field of safe production of coal mines, and in particular relates to a multi-stage hurricane-proof device for a mine tunnel and a use method thereof. Background Art

[0002] In the mine tunnel, the damper is the main structure in the ventilation system, which can block the wind flow, thus providing convenience for construction personnel and transportation. The research on the installation of dampers in mine tunnels in the prior art mainly includes:

[0003] CN105065054A discloses an underground air door of a coal mine, comprising: a first door panel, a second door panel and a connecting device, wherein the height of the first door panel is L1+r meters, the height of the second door panel is L2+r meters, L1+r+L2=L, and L is a preset height; the first door panel comprises a first end and a second end, the height of the first end is L1 meter, the height of the second end is r meters, and the first end and the second end are stepped; the second door panel comprises a third end and a fourth end, the height of the third end is r meters, the height of the fourth end is L2 meters, and the third end and the fourth end are stepped; the thickness of the first end and the fourth end is t meter, the thickness of the second end is t1 meter, and the thickness of the third end is t2 meters, t1+t2=t, L1, L2, r, L, t1, t2 and t are all numbers greater than zero, and the second end and the third end are in contact; the connecting device is used to detachably connect the first door panel and the second door panel, and the first door panel is connected to the door frame.

[0004] However, the setting of the above-mentioned damper is also matched with its expected wind volume, and it is only applicable to situations with small wind volume; and in the process of roof falling, a huge air shock wave is formed from the goaf to the tunnel entrance, and the instantaneous wind volume generated can be called a hurricane, and with the large-scale span of the roof, the hurricane speed tends to increase, and the wind speed increases sharply at the tunnel entrance, but the wind speed in the tunnel decays with the increase of the distance from the tunnel entrance; with the increase of the roof falling time, the wind speed in the tunnel shows an overall upward trend, but the attenuation rate of the wind speed in the tunnel gradually decreases, and the peak wind speed decays logarithmically with the increase of the distance between the location and the tunnel entrance, and the hurricane generated at this time will threaten the safety of equipment and personnel.

[0005] In view of the above-mentioned hurricane problem caused by the falling of the roof, most mines have not taken effective measures, and ordinary dampers cannot block hurricanes at all, and may even damage the dampers. Moreover, in the case of limited width in some mine tunnels, the use of push-pull doors will hinder the normal operation of the coal mine, or when the tunnel has bottom drum deformation, the use of push-pull doors will hinder the normal opening or closing of the dampers. Therefore, for the technical problem of blocking hurricanes while the bottom drum deformation of the mine tunnel appears in the prior art, it is necessary to consider both the actual situation of the mine tunnel and the applicability of the dampers. Summary of the invention

[0006] One of the purposes of the present invention is to provide a multi-stage hurricane-proof device for mine tunnels, which can effectively block the hurricane generated by the falling of the roof in the tunnel, and is particularly suitable for the situation where the bottom drum of the mine tunnel is deformed. When a hurricane is generated in the tunnel, no human control is required, and the hurricane-proof door can automatically fall down to block the wind only by relying on the effect of gravity.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A multi-stage hurricane-proof device for a mine tunnel comprises a first hurricane-proof mechanism, a second hurricane-proof mechanism and a third hurricane-proof mechanism arranged in sequence from front to back, wherein the first hurricane-proof mechanism, the second hurricane-proof mechanism and the third hurricane-proof mechanism all comprise hurricane-proof doors, a traction mechanism and a trigger mechanism, and when a hurricane is generated in the mine tunnel, the hurricane-proof door of the first hurricane-proof mechanism, the hurricane-proof door of the second hurricane-proof mechanism and the hurricane-proof door of the third hurricane-proof mechanism automatically fall down to block the tunnel;

[0009] Cutting grooves are arranged on the two sides and the top plate of the mine tunnel, and a slide rail mechanism is arranged in the cutting grooves;

[0010] The slide rail mechanism comprises a first rail and a second rail located on both sides of the lane, the first rail and the second rail are parallel to each other, and a transverse bracket is arranged between the first rail and the second rail;

[0011] The hurricane-proof doors of the first hurricane-proof mechanism, the second hurricane-proof mechanism, and the third hurricane-proof mechanism all include a door frame and an impact-proof body located in the door frame, and pulleys are connected to both sides of the door frame, and the pulleys on both sides are respectively embedded in the first track and the second track;

[0012] The area of ​​the door frame of the hurricane-proof door of the first hurricane-proof mechanism is smaller than the area of ​​the lane;

[0013] The area of ​​the door frame of the hurricane-proof door of the second hurricane-proof mechanism is equal to the area of ​​the lane;

[0014] The area of ​​the door frame of the hurricane-proof door of the third hurricane-proof mechanism is larger than the area of ​​the lane;

[0015] The impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity. The shape and size of the containing cavity match the shape and size of the door frame. The containing cavity is fastened to the door frame by a fixing member.

[0016] The traction mechanism is used to provide a certain pulling force to the hurricane-proof door, and the traction mechanism includes a first spring, a second spring and a third spring. The first spring and the second spring are located in the cutting grooves on both sides of the lane, and the top ends of the first spring and the second spring are connected to the bottom of the door frame. One end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame.

[0017] A trigger mechanism is installed on the top plate of the tunnel, and the trigger mechanism includes a trigger bracket perpendicular to the top plate, a fourth spring is connected to the trigger bracket, the fourth spring is parallel to the top plate of the tunnel, the other end of the fourth spring is connected to a baffle, the baffle includes an inclined section and a horizontal section, the top end of the inclined section is movably connected to the top plate of the tunnel, the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees.

[0018] The beneficial technical effects directly brought about by the above technical solution are:

[0019] In view of the hurricane problem caused by the falling of the roof in the mine tunnel, the present invention studies a hurricane-proof door, which uses a containing cavity filled with a non-Newtonian fluid as an impact-proof body, and utilizes the principle of non-Newtonian fluid. As the external pressure increases, the viscosity of the non-Newtonian fluid will also change accordingly. It is particularly suitable for the moment when the top falls. When the roof falls instantly, the external pressure increases rapidly, and the non-Newtonian fluid in the containing cavity quickly turns into a hard solid structure, which serves as an impact-proof body to block the hurricane in the tunnel; in addition, by using a traction mechanism and a trigger mechanism in conjunction with the hurricane-proof door, the hurricane state can be quickly judged and the use / non-use state of the hurricane-proof door can be ensured; by using the principle of non-Newtonian fluid, non-Newtonian fluid is used in mine tunnels as a wind door for the first time, which can not only resist the impact when the hurricane comes, but also ensure the safety of the staff and the equipment.

[0020] The hurricane-proof doors corresponding to the above-mentioned first hurricane-proof mechanism, the second hurricane-proof mechanism and the third hurricane-proof mechanism can completely block hurricanes in the tunnel by leaving a gap, a small part of the gap, or no gap at all between the doors and the tunnel. The above-mentioned hurricane-proof doors are located above the tunnel in a normal state and do not hinder the normal operation of the tunnel. They are particularly suitable for mines with narrow tunnels.

[0021] As a preferred solution of the present invention, the top end of the inclined section is connected to the tunnel roof via a pulley.

[0022] As another preferred embodiment of the present invention, the accommodating cavity is made of injection-molded cloth, and an injection hole is provided on the injection-molded cloth, and the non-Newtonian fluid is injected into the accommodating cavity through the injection hole.

[0023] Further preferably, the periphery of the accommodating cavity is wrapped with a strong canvas, and the fixing member includes a wire mesh, and the strong canvas wrapped with the accommodating cavity is fixed to the door frame by winding the wire mesh.

[0024] Preferably, three groups of slide rail mechanisms are provided, which respectively cooperate with the pulleys on the hurricane-proof door of the first hurricane-proof mechanism, the pulleys on the hurricane-proof door of the second hurricane-proof mechanism, and the pulleys on the hurricane-proof door of the third hurricane-proof mechanism.

[0025] Another object of the present invention is to provide a working method of a multi-stage hurricane protection device for a mine tunnel, which comprises the following steps in sequence:

[0026] a. Lay out cutting grooves and slide rails

[0027] A cutting groove is arranged around the mine tunnel, and a slide rail mechanism is installed on the cutting groove, wherein the slide rail mechanism comprises two parallel rails, namely a first rail and a second rail, wherein the first rail is located on one side of the tunnel, and the second rail is located on the other side of the tunnel, and a transverse bracket is installed between the first rail and the second rail;

[0028] b. Install the first hurricane protection mechanism

[0029] The first hurricane-proof mechanism includes a hurricane-proof door, a traction mechanism, and a trigger mechanism;

[0030] The hurricane-proof door comprises a door frame and an impact-proof body located in the door frame. The area of ​​the door frame of the hurricane-proof door of the first hurricane-proof mechanism is smaller than the area of ​​the lane. A pulley is connected to the bottom of the door frame, and the pulley is embedded in the second track.

[0031] The impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity. The shape and size of the containing cavity match the shape and size of the door frame. The containing cavity is fastened to the door frame by a fixing member.

[0032] The traction mechanism comprises a first spring, a second spring and a third spring, wherein the first spring and the second spring are located in the cutting grooves on both sides of the lane, the top ends of the first spring and the second spring are connected to the bottom of the door frame, one end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame;

[0033] A trigger mechanism is installed on the top plate of the tunnel, the trigger mechanism includes a trigger bracket perpendicular to the top plate, a fourth spring is connected to the trigger bracket, the fourth spring is parallel to the top plate of the tunnel, the other end of the fourth spring is connected to a baffle, the baffle includes an inclined section and a horizontal section, the top end of the inclined section is movably connected to the top plate of the tunnel, the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees;

[0034] c. Install the second hurricane protection mechanism

[0035] The gap between the door frame of the hurricane-proof door of the second hurricane-proof mechanism and the laneway is smaller than the area of ​​the door frame of the first hurricane-proof mechanism and is equal to the area of ​​the laneway; the rest is the same as the installation steps of the first hurricane-proof mechanism in step b;

[0036] d. Install the third hurricane protection mechanism

[0037] The area of ​​the door frame of the hurricane-proof door of the third hurricane-proof mechanism is larger than the area of ​​the laneway, and the rest is the same as the installation steps of the first hurricane-proof mechanism in step b;

[0038] e. When a hurricane occurs in the mine, the hurricane-proof door is triggered by the trigger mechanism to move downward, and the first spring and the second spring are in a compressed state;

[0039] f. When the wind in the mine is weak or there is no wind, the first spring and the second spring change from the compressed state to the normal state, and the hurricane-proof door moves upward, and is pulled back to the top of the tunnel by the tension of the third spring;

[0040] g. When a hurricane occurs again in the mine, follow step e; when the wind in the mine is weak, follow step f, and repeat this cycle to complete the isolation of the hurricane in the mine tunnel.

[0041] Compared with the prior art, the present invention brings the following beneficial technical effects:

[0042] The present invention proposes a multi-stage hurricane protection device for mine tunnels, which uses non-Newtonian fluids in the dampers of coal mine tunnels, solving the technical problem that the dampers in the prior art are easily damaged in hurricane conditions. The use of non-Newtonian fluids in the dampers saves costs and does not generate pollution. In addition, the device can also be used as a permanent damper.

[0043] When a large area of ​​the roof of the goaf collapses instantly and generates a hurricane in the tunnel, the non-Newtonian fluid in the impact-proof body can instantly turn into a hard impact-resistant structure under the impact of external force to isolate the hurricane in the tunnel and prevent it from threatening the safety of the workers.

[0044] The present invention performs blocking by means of a hurricane-proof door of a first hurricane-proof mechanism, a hurricane-proof door of a second hurricane-proof mechanism and a hurricane-proof door of a third hurricane-proof mechanism; a gap is left between the hurricane-proof door of the first hurricane-proof mechanism and the alley, and a certain deformation space exists; a smaller gap is left between the hurricane-proof door of the second hurricane-proof mechanism and the alley; and there is no gap at all between the hurricane-proof door of the third hurricane-proof mechanism and the alley; hurricanes in the alley can be completely blocked by the three hurricane-proof doors.

[0045] The present invention can completely block hurricanes by using a traction mechanism, a trigger mechanism and three hurricane-proof doors in cooperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be further described below in conjunction with the accompanying drawings:

[0047] Figure 1 It is a schematic diagram of the arrangement structure of the first hurricane protection mechanism and the lane of the present invention;

[0048] Figure 2 This is a schematic diagram of the tunnel blocking state of the first hurricane protection mechanism of the present invention;

[0049] Figure 3 It is a schematic diagram of the arrangement structure of the second hurricane protection mechanism and the lane of the present invention;

[0050] Figure 4 This is a schematic diagram of the tunnel blocking state of the second hurricane protection mechanism of the present invention;

[0051] Figure 5 It is a schematic diagram of the arrangement structure of the third hurricane protection mechanism and the lane of the present invention;

[0052] Figure 6 This is a schematic diagram of the tunnel blocking state of the third hurricane protection mechanism of the present invention;

[0053] Figure 7 This is a schematic diagram of the structure of the trigger mechanism;

[0054] In the figure:

[0055] 1. Slide rail mechanism, 2. Third spring, 3. Door frame, 4. Fixing part, 5. Non-Newtonian fluid, 6. Pulley, 7. Trigger mechanism, 8. First spring, 9. Lane, 10. Top plate, 11. Baffle, 12. Fourth spring, 13. Trigger bracket. DETAILED DESCRIPTION

[0056] The present invention proposes a multi-stage hurricane protection device for mine tunnels and a working method of the device. In order to make the advantages and technical solutions of the present invention clearer and more specific, the present invention is described in detail below in conjunction with specific embodiments.

[0057] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “comprising” and the like will be understood to include stated elements or components but not to exclude other elements or components.

[0058] In this document, for the convenience of description, spatial relative terms such as "below", "beneath", "below", "above", "above", etc. may be used to describe the relationship of one component or feature to another component or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the component described as being "below" or "below" other components or features will be oriented "above" the component or feature. Therefore, the exemplary term "below" can include both below and above. The components may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0059] The non-Newtonian fluid used in the present invention refers to a fluid that does not satisfy Newton's experimental law of viscosity, that is, a fluid whose shear stress and shear strain rate are not in a linear relationship.

[0060] The non-Newtonian fluid used in the present invention is mainly water-coal slurry or mud.

[0061] The dampers frequently used in mine tunnels cannot block the hurricane generated in the tunnel when a large area of ​​the roof of the goaf falls instantly. To address the hurricane generated in tunnel 9, the present invention applies a non-Newtonian fluid to the tunnel. When a hurricane is generated, the non-Newtonian fluid's characteristics enable it to quickly become a hard, impact-resistant solid structure, thereby effectively blocking the tunnel hurricane.

[0062] Specifically, the multi-stage hurricane protection device of the present invention includes a first hurricane protection mechanism, a second hurricane protection mechanism and a third hurricane protection mechanism, wherein the three hurricane protection mechanisms all utilize the principle of non-Newtonian fluid. When a hurricane is generated in the alley, the corresponding hurricane protection doors fall down to block the hurricane. By limiting the areas of the hurricane protection doors corresponding to the three hurricane protection mechanisms and the area of ​​the alley, the alley hurricane can be better blocked.

[0063] Combination Figure 1 and Figure 2As shown, the first hurricane-proof mechanism includes a hurricane-proof door, a traction mechanism, and a trigger mechanism. The hurricane-proof door includes a door frame 3 and an impact-proof body located in the door frame 3. The shape of the door frame matches the shape of the lane. However, the area of ​​the door frame of the first hurricane-proof mechanism is smaller than the area of ​​the lane, providing a certain deformation and gap. The shape of the lane of the present invention is preferably an arch, so the corresponding door frame is also an arch. Pulleys are fixedly connected to the two sides of the door frame, and the pulleys are embedded in corresponding tracks arranged on both sides of the lane. The pulley 6 can slide up and down along the corresponding track, thereby driving the hurricane-proof door to slide up and down.

[0064] Combination Figure 3 and Figure 4 As shown, the structure of the second hurricane protection mechanism is the same as that of the first hurricane protection mechanism, with the only difference being that the area of ​​the door frame corresponding to the second hurricane protection mechanism is substantially equal to the area of ​​the laneway, which can provide slightly smaller deformation and gap.

[0065] Combination Figure 5 and Figure 6 As shown, the structure of the third hurricane protection mechanism is the same as that of the first hurricane protection mechanism, with the only difference being that the area of ​​the door frame corresponding to the third hurricane protection mechanism is larger than the area of ​​the alley, and the alley can be completely blocked.

[0066] The effect of blocking the alley hurricane by using the first hurricane-proof mechanism, the second hurricane-proof mechanism and the third hurricane-proof mechanism is better than using any one of them.

[0067] As a major improvement of the present invention, the impact-proof bodies of the first hurricane-proof mechanism, the second hurricane-proof mechanism and the third hurricane-proof mechanism have the same structure, specifically: the impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity, the shape and size of the containing cavity match the shape and size of the corresponding door frame, and the containing cavity is fastened to the door frame by a fixing member 4. The containing cavity is preferably made of injection-molded cloth, and an injection hole is provided on the injection-molded cloth. The non-Newtonian fluid is injected into the containing cavity through the injection hole. The injection-molded cloth has a strong bearing capacity, and the containing cavity as a non-Newtonian fluid is more solid. The non-Newtonian fluid 5 fills the entire containing cavity to better block the hurricane.

[0068] In order to make the structure of the impact-proof body more stable, at least one layer of strong canvas can be wrapped around the periphery of the accommodating cavity. The strong canvas not only has good waterproof performance, but is also stronger and more durable. Wrapping it around the periphery of the accommodating cavity can further enhance the impact resistance of the impact-proof body.

[0069] The above-mentioned fixing member is connected between the impact-proof body and the door frame 3, and is used to fasten the impact-proof body to the door frame 3. The structure of the fixing member is preferably a wire mesh, which has a certain toughness and is suitable for fastening the impact-proof body to the door frame.

[0070] In order to cooperate with the above-mentioned hurricane-proof door, the present invention has a targeted traction mechanism. The traction mechanisms of the three hurricane-proof mechanisms are the same, and their main function is to provide a certain pulling force to the hurricane-proof door. The connection relationship between the traction mechanism and its corresponding hurricane-proof door is mainly as follows:

[0071] The traction mechanism includes a first spring 8, a second spring and a third spring 2. The first spring and the second spring are located in the cutting grooves on both sides of the lane. The top ends of the first spring and the second spring are connected to the bottom of the door frame. One end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame.

[0072] A trigger mechanism 7 is installed on the top plate 10 of the tunnel, and the trigger mechanism includes a trigger bracket 13 perpendicular to the top plate, and a fourth spring 12 is connected to the trigger bracket. The fourth spring is parallel to the top plate 11 of the tunnel, and the other end of the fourth spring is connected to a baffle, and the baffle includes an inclined section and a horizontal section. The top end of the inclined section is movably connected to the top plate of the tunnel, and the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees.

[0073] The first spring, the second spring and the third spring are all high-strength springs.

[0074] The slide rail mechanism 1 is a slide rail that cooperates with the three hurricane-proof doors to slide up and down, and is respectively installed in the cutting grooves on both sides of the corresponding lanes.

[0075] The working method of the multi-stage hurricane protection device of the present invention is described in detail below.

[0076] a. Lay out cutting grooves and slide rails

[0077] A cutting groove is arranged around the mine tunnel, and a slide rail mechanism is installed on the cutting groove, wherein the slide rail mechanism comprises two parallel rails, namely a first rail and a second rail, wherein the first rail is located on one side of the tunnel, and the second rail is located on the other side of the tunnel, and a transverse bracket is installed between the first rail and the second rail;

[0078] b. Install the first hurricane protection mechanism

[0079] The first hurricane-proof mechanism includes a hurricane-proof door, a traction mechanism, and a trigger mechanism;

[0080] The hurricane-proof door comprises a door frame and an impact-proof body located in the door frame. The area of ​​the door frame of the hurricane-proof door of the first hurricane-proof mechanism is smaller than the area of ​​the lane. A pulley is connected to the bottom of the door frame, and the pulley is embedded in the second track.

[0081] The impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity. The shape and size of the containing cavity match the shape and size of the door frame. The containing cavity is fastened to the door frame by a fixing member.

[0082] The traction mechanism comprises a first spring, a second spring and a third spring, wherein the first spring and the second spring are located in the cutting grooves on both sides of the lane, the top ends of the first spring and the second spring are connected to the bottom of the door frame, one end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame;

[0083] A trigger mechanism is installed on the top plate of the tunnel, the trigger mechanism includes a trigger bracket perpendicular to the top plate, a fourth spring is connected to the trigger bracket, the fourth spring is parallel to the top plate of the tunnel, the other end of the fourth spring is connected to a baffle, the baffle includes an inclined section and a horizontal section, the top end of the inclined section is movably connected to the top plate of the tunnel, the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees;

[0084] c. Install the second hurricane protection mechanism

[0085] The gap between the door frame of the hurricane-proof door of the second hurricane-proof mechanism and the laneway is smaller than the area of ​​the door frame of the first hurricane-proof mechanism and is equal to the area of ​​the laneway; the rest is the same as the installation steps of the first hurricane-proof mechanism in step b;

[0086] d. Install the third hurricane protection mechanism

[0087] The area of ​​the door frame of the hurricane-proof door of the third hurricane-proof mechanism is larger than the area of ​​the laneway, and the rest is the same as the installation steps of the first hurricane-proof mechanism in step b;

[0088] e. When a hurricane occurs in the mine, the hurricane-proof door is triggered by the trigger mechanism to move downward, and the first spring and the second spring are in a compressed state;

[0089] f. When the wind in the mine is weak or there is no wind, the first spring and the second spring change from the compressed state to the normal state, and the hurricane-proof door moves upward, and is pulled back to the top of the tunnel by the tension of the third spring;

[0090] g. When a hurricane occurs again in the mine, follow step e; when the wind in the mine is weak, follow step f, and repeat this cycle to complete the isolation of the hurricane in the mine tunnel.

[0091] The present invention will be further described below in conjunction with specific embodiments:

[0092] Embodiment 1:

[0093] Step 1: Make cutting grooves around the laneway;

[0094] Step 2: Use canvas and injection molding cloth to make a receiving cavity according to the shape of the door frame, and leave a liquid injection hole on the receiving cavity;

[0095] Step 3: inject the non-Newtonian fluid into the containing cavity through the injection hole, then wrap it with strong canvas, and then fix it to the frame with wire mesh;

[0096] Step 4: Fix the pulley to the side of the door frame and lubricate the pulley;

[0097] Step 5: Use the first spring, the second spring and the third spring to fix the door frame on the slide rail mechanism, and fix the slide rail mechanism with steel nails of a certain length;

[0098] Step 6: Ensure that the entire device is located in the cutting groove;

[0099] Step 7: Install the trigger mechanism on the tunnel roof;

[0100] Step 8: When a hurricane occurs in the mine, the trigger mechanism senses it and ejects the door frames corresponding to the three hurricane-proof mechanisms from the cutting grooves. When there is no hurricane, the first spring and the second spring return to their original states to push up the corresponding hurricane-proof doors.

[0101] The invention provides a method for isolating hurricane in a mine tunnel, which is particularly suitable for the situation of hurricane generated in the tunnel when a large range of roof in a goaf falls instantly.

[0102] It should be noted that, based on the technical inspiration of the above scheme, the hurricane-proof mechanism in the present invention can also be set to four groups, five groups, etc. by those skilled in the art. Considering the wind-blocking effect and cost, the present invention selects three groups of hurricane-proof mechanisms.

[0103] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0104] It should be further noted that the specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multi-stage hurricane protection device for a mine tunnel, comprising a first hurricane protection mechanism, a second hurricane protection mechanism and a third hurricane protection mechanism arranged in sequence from front to back, characterized in that: The first hurricane-proof mechanism, the second hurricane-proof mechanism, and the third hurricane-proof mechanism all include hurricane-proof doors, traction mechanisms, and trigger mechanisms. When a hurricane occurs in a mine tunnel, the hurricane-proof doors of the first hurricane-proof mechanism, the hurricane-proof doors of the second hurricane-proof mechanism, and the hurricane-proof doors of the third hurricane-proof mechanism automatically fall down to block the tunnel. Cutting grooves are arranged on the two sides and the top plate of the mine tunnel, and a slide rail mechanism is arranged in the cutting grooves; The slide rail mechanism comprises a first rail and a second rail located on both sides of the lane, the first rail and the second rail are parallel to each other, and a transverse bracket is arranged between the first rail and the second rail; The hurricane-proof doors of the first hurricane-proof mechanism, the second hurricane-proof mechanism, and the third hurricane-proof mechanism all include a door frame and an impact-proof body located in the door frame, and pulleys are connected to both sides of the door frame, and the pulleys on both sides are respectively embedded in the first track and the second track; The area of ​​the door frame of the hurricane-proof door of the first hurricane-proof mechanism is smaller than the area of ​​the lane; The area of ​​the door frame of the hurricane-proof door of the second hurricane-proof mechanism is equal to the area of ​​the lane; The area of ​​the door frame of the hurricane-proof door of the third hurricane-proof mechanism is larger than the area of ​​the lane; The impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity. The shape and size of the containing cavity match the shape and size of the door frame. The containing cavity is fastened to the door frame by a fixing member. The traction mechanism is used to provide a certain pulling force to the hurricane-proof door, and the traction mechanism includes a first spring, a second spring and a third spring. The first spring and the second spring are located in the cutting grooves on both sides of the lane, and the top ends of the first spring and the second spring are connected to the bottom of the door frame. One end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame. A trigger mechanism is installed on the top plate of the tunnel, and the trigger mechanism includes a trigger bracket perpendicular to the top plate, a fourth spring is connected to the trigger bracket, the fourth spring is parallel to the top plate of the tunnel, the other end of the fourth spring is connected to a baffle, the baffle includes an inclined section and a horizontal section, the top end of the inclined section is movably connected to the top plate of the tunnel, the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees.

2. A multi-stage hurricane protection device for mine tunnels according to claim 1, characterized in that: The top end of the inclined section is connected to the tunnel roof through a pulley.

3. A multi-stage hurricane protection device for mine tunnels according to claim 1, characterized in that: The accommodating cavity is made of injection-molded cloth, and a liquid injection hole is arranged on the injection-molded cloth. The non-Newtonian fluid is injected into the accommodating cavity through the liquid injection hole.

4. A multi-stage hurricane protection device for mine tunnels according to claim 3, characterized in that: The outer periphery of the accommodating cavity is wrapped with a strong canvas, and the fixing piece comprises a wire mesh, and the strong canvas wrapped with the accommodating cavity is fixed to the door frame together by winding the wire mesh.

5. The multi-stage hurricane protection device for mine tunnels according to claim 1, characterized in that: The slide rail mechanism is provided with three groups, which respectively cooperate with the pulleys on the hurricane-proof door of the first hurricane-proof mechanism, the pulleys on the hurricane-proof door of the second hurricane-proof mechanism and the pulleys on the hurricane-proof door of the third hurricane-proof mechanism.

6. A method for operating a multi-stage hurricane protection device for a mine tunnel, characterized in that: The following steps are included in sequence: a. Lay out cutting grooves and slide rails A cutting groove is arranged around the mine tunnel, and a slide rail mechanism is installed on the cutting groove, wherein the slide rail mechanism comprises two parallel rails, namely a first rail and a second rail, wherein the first rail is located on one side of the tunnel, and the second rail is located on the other side of the tunnel, and a transverse bracket is installed between the first rail and the second rail; b. Install the first hurricane protection mechanism The first hurricane-proof mechanism includes a hurricane-proof door, a traction mechanism, and a trigger mechanism; The hurricane-proof door comprises a door frame and an impact-proof body located in the door frame. The area of ​​the door frame of the hurricane-proof door of the first hurricane-proof mechanism is smaller than the area of ​​the lane. A pulley is connected to the bottom of the door frame, and the pulley is embedded in the second track. The impact-proof body includes a containing cavity and a non-Newtonian fluid in the containing cavity. The shape and size of the containing cavity match the shape and size of the door frame. The containing cavity is fastened to the door frame by a fixing member. The traction mechanism comprises a first spring, a second spring and a third spring, wherein the first spring and the second spring are located in the cutting grooves on both sides of the lane, the top ends of the first spring and the second spring are connected to the bottom of the door frame, one end of the third spring is connected to the bottom of the transverse bracket, and the other end is connected to the top of the door frame; A trigger mechanism is installed on the top plate of the tunnel, the trigger mechanism includes a trigger bracket perpendicular to the top plate, a fourth spring is connected to the trigger bracket, the fourth spring is parallel to the top plate of the tunnel, the other end of the fourth spring is connected to a baffle, the baffle includes an inclined section and a horizontal section, the top end of the inclined section is movably connected to the top plate of the tunnel, the horizontal section is connected to the fourth spring, and the angle between the inclined section and the horizontal section is greater than 90 degrees; c. Install the second hurricane protection mechanism The gap between the door frame of the hurricane-proof door of the second hurricane-proof mechanism and the laneway is smaller than the area of ​​the door frame of the first hurricane-proof mechanism and is equal to the area of ​​the laneway; the rest is the same as the installation steps of the first hurricane-proof mechanism in step b; d. Install the third hurricane protection mechanism The area of ​​the door frame of the hurricane-proof door of the third hurricane-proof mechanism is larger than the area of ​​the laneway, and the rest is the same as the installation steps of the first hurricane-proof mechanism in step b; e. When a hurricane occurs in the mine, the hurricane-proof door is triggered by the trigger mechanism to move downward, and the first spring and the second spring are in a compressed state; f. When the wind in the mine is weak or there is no wind, the first spring and the second spring change from the compressed state to the normal state, and the hurricane-proof door moves upward, and is pulled back to the top of the tunnel by the tension of the third spring; g. When a hurricane occurs again in the mine, follow step e; when the wind in the mine is weak, follow step f, and repeat this cycle to complete the isolation of the hurricane in the mine tunnel.

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