Double-leaf tunnel chamber door with blast wave suspension plate

Abstract

The application provides a double-leaf tunnel chamber door with an anti-explosion wave suspension plate, relates to the technical field of chamber doors, and comprises: an inner door which is arranged at the bottom of a limiting top cover through a hinge connection and is fixedly connected with a bottom gear at the bottom; the rear side of an outer door is provided with a suspension plate through a hinge connection; the top of the outer door is fixedly connected with a door shaft, the top of the door shaft is hingedly connected with the limiting top cover, the outer curved side of the door shaft is fixedly connected with an inner torsional spring, and the outer side of the inner torsional spring is fixedly connected with an outer door shaft gear; when an impact wave in the tunnel impacts the outer door from the outside, the outer door top is limited inside the limiting top cover, the whole outer door can be angularly blocked, the outer side of the outer door and the inner door is limited by a corner limiting protrusion B and a corner limiting protrusion A, the inner deflection of the outer door and the inner door can be further prevented, the blocking strength of the external impact wave can be improved, and the problem that the safety of the chamber door cannot be improved while the opening and closing and ventilation are not affected is solved.

Description

Technical Field

[0001] This invention relates to the field of tunnel door technology, and in particular to a double-leaf tunnel door with an explosion-proof wave suspension plate. Background Technology

[0002] Blast wave shielding valves are one of the important protective devices for ensuring the survival of personnel inside the tunnels of a nuclear attack site. They are installed at the tunnel head and can quickly close to block the shock wave in the event of a nuclear attack, providing a safe place for personnel inside the tunnel to wait for rescue and protecting their lives.

[0003] There is a need for a double-leaf tunnel door with an explosion-proof suspension plate that can provide double protection against external shock waves. Summary of the Invention

[0004] In view of this, the present invention provides a double-leaf tunnel chamber door with an explosion-proof wave suspension plate, which has a double-door structure. By limiting the top of the outer door inside the limiting cap, the outer door can be angled to block the entire outer door, thereby improving its robustness and enhancing the safety of the tunnel chamber door without affecting opening, closing and ventilation.

[0005] This invention provides a double-leaf tunnel chamber door with an explosion-proof wave suspension plate, specifically including: a base;

[0006] A horizontal baffle is fixedly connected to the top rear end of the base, a bottom tube is fixedly connected to the bottom of the base, and side sealing plates are fixedly connected to the top of the left and right sides of the base. The number of side sealing plates is set to two sets. A fixing plate is fixedly connected to the outer vertical surface of the side sealing plate, and a circular through hole is passed through the inside of the fixing plate in the horizontal direction.

[0007] The top of the side sealing plate is fixedly connected to a limiting cap, which is a semi-open structure. An outer door is provided at the bottom rear side of the limiting cap via a hinge, and an inner door is provided at the front side of the outer door. The inner door is provided at the bottom of the limiting cap via a hinge, and a bottom gear is fixedly connected to the bottom of the inner door.

[0008] The outer door is provided with a suspension plate by a hinge on the rear side, a lifting handle is fixedly connected to the rear facade of the outer door, a door hinge is fixedly connected to the top of the outer door, the top of the door hinge is connected to the limit cap hinge, an inner torsion spring is fixedly connected to the outer curved side of the door hinge, and an outer door hinge gear is fixedly connected to the outer side of the inner torsion spring.

[0009] The outer door and the inner door are hinged at the top and bottom of the limiting cap.

[0010] A grooved rod B is fixedly connected to the top of the outer side of the outer door, and the top of the grooved rod B is hinged to the bottom of the limiting cap.

[0011] Optionally, an inner door shaft gear is provided on the outer side of the grooved rod B via a sliding connection.

[0012] Optionally, a fixing frame is fixedly connected to the inner front end of the side sealing plate. The number of fixing frames is set to two sets. A handwheel is provided at the front end of the fixing frame through a hinge. A connecting shaft is provided at the rear end of the handwheel through a coaxial connection. A bevel gear A is provided at the front side of the connecting shaft through a coaxial connection. A transmission gear is provided at the rear end of the connecting shaft through a coaxial connection.

[0013] Optionally, a grooved rod A is fixedly connected to the bottom of the outer door, a sliding groove is fixedly connected to the outside of the grooved rod A, a sliding gear A is sleeved on the outside of the grooved rod A, and an inner protrusion is fixedly connected to the inner curved side of the sliding gear A, with the inner protrusion slidably connected to the inside of the sliding groove.

[0014] Optionally, a sliding member is provided on the rear side of the fixed frame via a sliding connection, a limited angle protrusion A is fixedly connected to the right end of the fixed frame, an inner protrusion strip is fixedly connected to the rear vertical surface of the fixed frame, and a vertical rod is fixedly connected to the top of the inner protrusion strip.

[0015] Optionally, a limiting angle protrusion B is fixedly connected to the right rear end of the slider, and a limiting plate is fixedly connected to the front end of the slider. The number of limiting plates is set to two sets, and a roller is provided on the inner side of the limiting plate through a hinge connection.

[0016] Optionally, the inner convex strip is located inside the limiting plate, and the side surface of the inner convex strip is in contact with the curved side surface of the roller.

[0017] Optionally, a driven rack is fixedly connected to the left side of the limiting plate, and the right side of the driven rack meshes with a transmission gear.

[0018] Optionally, the bottom of the limiting cap is provided with a driven gear connected by a hinge, and the bottom end of the driven gear is provided with a bevel gear B connected by a coaxial connection. The curved side of the bevel gear B meshes with the bevel gear A. The driven gear is driven by the inner door shaft gear through a chain, the sliding gear B is driven by the outer door shaft gear through a chain, and the sliding gear A is driven by the bottom gear through a chain.

[0019] Optionally, a protruding tube is fixedly connected to the top of the inner side of the limiting plate, and a return spring is fixedly connected to the bottom end of the protruding tube. The bottom end of the return spring is fixed to the top surface of the inner protruding strip, and the vertical rod is located inside the return spring.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Compared with traditional cave doors, the cave doors of the various embodiments of the present invention, by setting a driven rack, can cause the coaxial connecting shaft of the handwheel to drive the coaxial bevel gear A to drive the bevel gear B meshing above it to rotate during the rotation of the handwheel. At the same time, the driven gear coaxial at the top of the bevel gear B can rotate. The rotation of the driven gear can drive the inner door shaft gear to rotate through chain transmission, thereby deflecting the inner door. Simultaneously, the inner door shaft gear drives the grooved rod B coaxial at its bottom to rotate, which can drive the sliding gear B meshing on the outside of the grooved rod B to drive the outer door shaft gear driven by its chain to rotate. Thus, the deflection of the inner door can drive the deflection of the outer door. The double-door design can improve the sturdiness and improve the safety of the cave door without affecting opening, closing and ventilation.

[0022] 2. During the vertical downward sliding of the sliding component, when the outer door moves downward, the grooved rod A fixed at the bottom of the outer door can slide downward along the bottom tube, and the sliding gear B can slide vertically downward along the groove. This causes the inner door to deflect and drive the outer door to move vertically. When the outer door panel deflects beyond the limit cap, the rotation of the handwheel is released. The return spring can elastically expand to push the protruding tube upward, thereby elastically pushing the sliding component and the outer door upward. The top edge of the outer door can then abut against the bottom of the limit cap. The inner convex strip is located inside the limit plate, and the side surface of the inner convex strip contacts the curved side surface of the roller. By controlling the deflection of the outer door while simultaneously causing it to move vertically, the outer door and the limit cap can be limited.

[0023] 3. By rotating the handwheel, the coaxial connecting shaft at its rear end is rotated, which in turn drives the transmission gear at its end to rotate. This causes the transmission gear to drive the driven rack meshing with it to move vertically, which in turn causes the driven rack to drive the sliding member to slide vertically downward. This causes the outer door, which is hinged to the side of the sliding member, to move downward, which allows the top edge of the outer door to move below the bottom edge of the limit cap, and the limit cap to release its restriction on the outer door.

[0024] 4. By setting a limiting cap, when the shock wave inside the tunnel impacts the outer door from the outside, it is limited by the top of the outer door inside the limiting cap, which can block the entire outer door and prevent it from deflecting inward. By limiting the outer and inner doors with the outer sides of the outer and inner doors and the limiting angle protrusions B and A, it can further prevent the outer and inner doors from deflecting inward, and improve the blocking strength against external shock waves. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0026] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0027] In the attached diagram:

[0028] Figure 1 A schematic diagram of the overall rear structure of the cave door according to an embodiment of the present invention is shown;

[0029] Figure 2 An embodiment according to the present invention is shown. Figure 1 A magnified schematic diagram of part A in the diagram;

[0030] Figure 3 A schematic diagram of the three-dimensional disassembly structure of the sliding gear A of the cave door according to an embodiment of the present invention is shown;

[0031] Figure 4 A schematic diagram of the overall front structure of the cave door according to an embodiment of the present invention is shown;

[0032] Figure 5 A schematic diagram of the three-dimensional disassembly structure of the fixing frame of the cave door according to an embodiment of the present invention is shown;

[0033] Figure 6 A schematic diagram of the three-dimensional structure of the limiting plate of the cave door according to an embodiment of the present invention is shown;

[0034] Figure 7 A schematic diagram of the three-dimensional structure of the driven rack of a cave door according to an embodiment of the present invention is shown.

[0035] Figure 8 An embodiment according to the present invention is shown. Figure 7 A magnified schematic diagram of part B in the diagram;

[0036] Figure 9 An embodiment according to the present invention is shown. Figure 7 A magnified schematic diagram of a portion of C;

[0037] Figure 10 A top-view perspective view of the inner door structure of a cavern door according to an embodiment of the present invention is shown;

[0038] Figure 11 An embodiment according to the present invention is shown. Figure 10 A magnified schematic diagram of a portion of D;

[0039] Figure 12 A schematic diagram of a three-dimensional side cross-section of a cave door limiting and sealing structure according to an embodiment of the present invention is shown;

[0040] Figure 13 A schematic diagram of the overall three-dimensional disassembled structure of the cave door according to an embodiment of the present invention is shown;

[0041] Figure 14 An embodiment according to the present invention is shown. Figure 13 A magnified schematic diagram of a portion of E in the diagram;

[0042] Figure 15 A schematic diagram of the three-dimensional structure of the inner torsion spring of the cave door according to an embodiment of the present invention is shown;

[0043] List of reference numerals

[0044] 1. Base;

[0045] 101. Horizontal baffle; 1011. Bottom pipe; 102. Side sealing plate; 103. Fixing plate; 104. Limiting cap;

[0046] 2. Outer door;

[0047] 201. Suspension plate; 202. Lifting handle; 203. Groove rod A; 2031. Slide groove; 204. Sliding gear A; 2041. Inner protrusion; 205. Outer door shaft gear; 2051. Inner torsion spring;

[0048] 3. Inner door;

[0049] 301. Sliding gear B; 302. Grooved rod B; 303. Inner door shaft gear; 304. Bottom gear;

[0050] 4. Fixed frame;

[0051] 401. Handwheel; 4011. Coupling; 402. Bevel gear A; 403. Transmission gear; 404. Bevel gear B; 405. Driven gear; 406. Angle-limiting protrusion A; 407. Inner protrusion; 4071. Vertical rod;

[0052] 5. Sliding components;

[0053] 501, Angle-limiting protrusion B; 502, Limiting plate; 5021, Driven rack; 503, Protruding tube; 5031, Return spring; 504, Roller. Detailed Implementation

[0054] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0055] Example: Please refer to Figures 1 to 15 :

[0056] This invention proposes a double-leaf tunnel chamber door with an explosion-proof wave suspension plate, comprising: a base 1; a horizontal baffle 101 is fixedly connected to the rear end of the top of the base 1, a bottom pipe 1011 is fixedly connected to the bottom of the base 1, side sealing plates 102 are fixedly connected to the top of the left and right sides of the base 1, the number of side sealing plates 102 is set to two sets, a fixing plate 103 is fixedly connected to the outer facade of the side sealing plate 102, and a circular through hole is horizontally penetrating inside the fixing plate 103; a limiting cap 104 is fixedly connected to the top of the side sealing plate 102, the limiting cap 104 is a semi-open structure, an outer door 2 is provided on the rear side of the bottom of the limiting cap 104 through a hinge, an inner door 3 is provided on the front side of the outer door 2, and the inner door 3 is hinged to the limiting cap 104. 4. At the bottom, a bottom gear 304 is fixedly connected to the bottom of the inner door 3; a suspension plate 201 is provided on the rear side of the outer door 2 via a hinge, and a lifting handle 202 is fixedly connected to the rear vertical surface of the outer door 2; a door hinge is fixedly connected to the top of the outer door 2, and the top of the door hinge is hinged to the limiting cap 104; an inner torsion spring 2051 is fixedly connected to the outer curved side of the door hinge, and an outer door shaft gear 205 is fixedly connected to the outer side of the inner torsion spring 2051; the top of the outer side of the outer door 2 and the inner door 3 are hinged to the bottom of the limiting cap 104; a grooved rod B302 is fixedly connected to the top of the outer side of the outer door 2, and the top of the grooved rod B302 is hinged to the bottom of the limiting cap 104; an inner door shaft gear 303 is provided on the outer side of the grooved rod B302 via a sliding connection.

[0057] like Figure 1 and Figure 13 As shown, a grooved rod A203 is fixedly connected to the bottom of the outer door 2. A sliding groove 2031 is fixedly connected to the outside of the grooved rod A203. A sliding gear A204 is sleeved on the outside of the grooved rod A203. An inner protrusion 2041 is fixedly connected to the inner curved side of the sliding gear A204. The inner protrusion 2041 is slidably connected to the inside of the sliding groove 2031. The double-door design with different heights between the inner door 3 and the outer door 2 can improve the sturdiness and enhance the safety of the cave door without affecting its opening and closing.

[0058] like Figure 2 , Figure 3 , Figure 5 and Figure 9As shown, a fixing frame 4 is fixedly connected to the inner front end of the side sealing plate 102. Two sets of fixing frames 4 are provided. A handwheel 401 is hinged to the front end of the fixing frame 4. A connecting shaft 401 is coaxially connected to the rear end of the handwheel 401. A bevel gear A402 is coaxially connected to the front side of the connecting shaft 4011. A transmission gear 403 is coaxially connected to the rear end of the connecting shaft 4011. A sliding member 5 is slidably connected to the rear side of the fixing frame 4. A finite angle protrusion A406 is fixedly connected to the right end of the fixing frame 4. An inner protrusion 407 is fixedly connected to the rear vertical surface of the fixing frame 4. The top of the inner protrusion 407... A vertical rod 4071 is fixedly connected to the sliding member 5. A limiting angle protrusion B501 is fixedly connected to the right rear end of the sliding member 5. A limiting plate 502 is fixedly connected to the front end of the sliding member 5. Two sets of limiting plates 502 are set. A roller 504 is hinged to the inner side of the limiting plate 502. When the handwheel 401 is rotated, the coaxial connecting shaft 4011 of the handwheel 401 can drive the coaxial bevel gear A402 to drive the bevel gear B404 above it to rotate. At the same time, the driven gear 405 coaxially on the top of the bevel gear B404 can rotate. The inner door 3 can be deflected by the inner door shaft gear 303 driven by the chain drive. Simultaneously, the inner door shaft gear 303 drives the grooved rod B302, which is coaxial with its bottom, to rotate. This causes the sliding gear B301, meshing with the grooved rod B302, to drive the outer door shaft gear 205, which is driven by the chain, to rotate. Thus, the inner door 3 deflects, causing the outer door 2 to deflect as well. During the downward vertical sliding of the sliding member 5, when the outer door 2 moves downwards, the grooved rod A203 fixed at the bottom of the outer door 2 slides downwards along the bottom tube 1011. The sliding gear B301 slides vertically downward along the slide groove 2031, thereby causing the inner door 3 to deflect and drive the outer door 2 to move vertically. When the outer door 2 deflects out of the limit cap 104, the rotation of the handwheel 401 is released. The return spring 5031 can elastically expand to push the protruding tube 503 upward, thereby elastically pushing the sliding member 5 and the outer door 2 upward. The top edge of the outer door 2 can abut against the bottom of the limit cap 104. The inner protrusion 407 is located inside the limit plate 502, and the side surface of the inner protrusion 407 contacts the curved side surface of the roller 504.

[0059] like Figure 5 , Figure 11 and Figure 6As shown, a driven gear 405 is hinged to the bottom of the limiting cap 104. A bevel gear B404 is coaxially connected to the bottom of the driven gear 405. The curved side of the bevel gear B404 meshes with the bevel gear A402. The driven gear 405 is driven by the inner door shaft gear 303 via a chain. The sliding gear B301 is driven by the outer door shaft gear 205 via a chain. The sliding gear A204 is driven by the bottom gear 304 via a chain. A driven rack 5021 is fixedly connected to the left side of the limiting plate 502. The right side of the driven rack 5021 meshes with the transmission gear 403. A protruding tube 503 is fixedly connected to the top of the inner side of the limiting plate 502. A composite gear is fixedly connected to the bottom of the protruding tube 503. The bottom end of the return spring 5031 is fixed to the top surface of the inner protrusion 407. The vertical rod 4071 is located inside the return spring 5031. By rotating the handwheel 401, the connecting shaft 4011 coaxial with its rear end is rotated. The connecting shaft 4011 drives the transmission gear 403 at its end to rotate. The transmission gear 403 drives the driven rack 5021 meshing with it to move vertically. The driven rack 5021 drives the sliding member 5 to slide vertically downward. This causes the outer door 2, which is hinged to the side of the sliding member 5, to move downward. The top edge of the outer door 2 can move to below the bottom edge of the limiting cap 104. The limiting cap 104 can then release the limiting of the outer door 2.

[0060] The specific usage and function of this embodiment are as follows: In use, rotating the handwheel 401 causes the coaxial connecting shaft 4011 at its rear end to rotate. The connecting shaft 4011 drives the transmission gear 403 at its end to rotate, which in turn drives the driven rack 5021 meshing with it to move vertically. During the rotation of the handwheel 401, the coaxial connecting shaft 4011 drives the coaxial bevel gear A402, which in turn drives the bevel gear B404 meshing above it to rotate. Simultaneously, the driven gear 405 coaxially located at the top of the bevel gear B404 rotates. The rotation of the driven gear 405, through chain transmission, drives the inner door shaft gear 303 to rotate. This causes the inner door 3 to deflect, and simultaneously, the inner door shaft gear 303 drives the grooved rod B302, which is coaxial with its bottom, to rotate. This causes the sliding gear B301, which meshes with the outer side of the grooved rod B302, to drive the outer door shaft gear 205, which is driven by its chain, to rotate. Thus, the inner door 3 deflects, causing the outer door 2 to deflect as well. During the downward vertical sliding of the sliding member 5, when the outer door 2 moves downward, the grooved rod A203 fixed at the bottom of the outer door 2 slides downward along the bottom tube 1011, causing the sliding gear B301 to slide vertically downward along the slide groove 2031. This causes the inner door 3 to deflect, causing the outer door 2 to move vertically. When the outer door 2 deflects beyond its limit... After the capping 104 is closed, the rotation of the handwheel 401 is released. The return spring 5031 can elastically expand to push the protruding tube 503 upward, thereby elastically pushing the sliding member 5 and the outer door 2 upward. This allows the top edge of the outer door 2 to abut the bottom of the capping 104. The inner protrusion 407 is located inside the limiting plate 502, and the side surface of the inner protrusion 407 contacts the curved side surface of the roller 504. This allows the driven rack 5021 to drive the sliding member 5 to slide vertically downward, thereby allowing the outer door 2, which is hinged to the side of the sliding member 5, to slide downward. This allows the top edge of the outer door 2 to move below the bottom edge of the capping 104, thus releasing the capping 104 from limiting the outer door 2. When the shock wave impacts the outer door 2 from the outside, it is limited by the top of the outer door 2 inside the limiting cap 104, which can block the outer door 2 as a whole and prevent it from deflecting inward. The outer door 2 and the inner door 3 are further limited by the limiting angle protrusions B501 and A406 on the outside, which can further prevent the outer door 2 and the inner door 3 from deflecting inward. When opening the tunnel door from the outside, the user can pull down by holding the two sets of lifting handles 202, so that the outer door 2 moves down to the same horizontal line as the inner door 3. When this happens, the limiting cap 104 can release the limiting of the top of the outer door 2 from the bottom edge, and the outer door 2 can be pulled outward to open the outer door 2 and the inner door 3 simultaneously.

[0061] Finally, it should be noted that when describing the positions of various components and their mating relationships, this invention typically uses one or a pair of components as examples. However, those skilled in the art should understand that such positions and mating relationships also apply to other components or other pairs of components. The above descriptions are merely exemplary embodiments of this invention and are not intended to limit the scope of protection of this invention, which is determined by the appended claims.

Claims

1. A double-leaf tunnel entrance with an explosion-proof wave suspension plate, characterized in that, include: Base; A horizontal baffle is fixedly connected to the top rear end of the base, a bottom tube is fixedly connected to the bottom of the base, and side sealing plates are fixedly connected to the top of the left and right sides of the base. The number of side sealing plates is set to two sets. A fixing plate is fixedly connected to the outer vertical surface of the side sealing plate, and a circular through hole is passed through the inside of the fixing plate in the horizontal direction. The top of the side sealing plate is fixedly connected to a limiting cap, which is a semi-open structure. An outer door is provided at the bottom rear side of the limiting cap via a hinge, and an inner door is provided at the front side of the outer door. The inner door is provided at the bottom of the limiting cap via a hinge, and a bottom gear is fixedly connected to the bottom of the inner door. The outer door is provided with a suspension plate by a hinge on the rear side, a lifting handle is fixedly connected to the rear facade of the outer door, a door hinge is fixedly connected to the top of the outer door, the top of the door hinge is connected to the limit cap hinge, an inner torsion spring is fixedly connected to the outer curved side of the door hinge, and an outer door hinge gear is fixedly connected to the outer side of the inner torsion spring. The outer door and the inner door are hinged at the top and bottom of the limiting cap. A grooved rod B is fixedly connected to the top of the outer side of the outer door, and the top of the grooved rod B is hinged to the bottom of the limiting cap. An inner portal gear is provided on the outer side of the grooved rod B via a sliding connection. The inner front end of the side sealing plate is fixedly connected to a fixed frame. The number of fixed frames is set to two sets. The front end of the fixed frame is connected to a handwheel by a hinge. The rear end of the handwheel is connected to a connecting shaft by a coaxial connection. The front side of the connecting shaft is connected to a bevel gear A by a coaxial connection. The rear end of the connecting shaft is connected to a transmission gear by a coaxial connection. The bottom of the outer door is fixedly connected to a grooved rod A, a sliding groove is fixedly connected to the outside of the grooved rod A, a sliding gear A is sleeved on the outside of the grooved rod A, and an inner protrusion is fixedly connected to the inner curved side of the sliding gear A, and the inner protrusion is slidably connected to the inside of the sliding groove. The fixed frame is provided with a sliding component via a sliding connection at the rear side. A limited angle protrusion A is fixedly connected to the right end of the fixed frame. An inner protrusion strip is fixedly connected to the rear vertical surface of the fixed frame. A vertical rod is fixedly connected to the top of the inner protrusion strip. The right rear end of the slider is fixedly connected to a limiting angle protrusion B, and the front end of the slider is fixedly connected to a limiting plate. The number of limiting plates is set to two sets, and a roller is provided on the inner side of the limiting plate through a hinge connection. A driven rack is fixedly connected to the left side of the limiting plate, and the right side of the driven rack meshes with the transmission gear; The bottom of the limiting cap is connected by a hinge and a driven gear is provided. The bottom end of the driven gear is connected by a bevel gear B through a coaxial connection. The curved side of the bevel gear B meshes with the bevel gear A. The driven gear is driven by the inner door shaft gear through a chain. The sliding gear B is driven by the outer door shaft gear through a chain. The sliding gear A is driven by the bottom gear through a chain. In use, turning the handwheel causes the coaxial connecting shaft at its rear end to rotate. This shaft drives the transmission gear at its end to rotate, which in turn drives the driven rack meshing with it to move vertically. During handwheel rotation, the coaxial connecting shaft drives the coaxial bevel gear A, which in turn drives the bevel gear B meshing above it to rotate. Simultaneously, the driven gear coaxially located at the top of bevel gear B rotates. This rotation of the driven gear, via chain drive, drives the inner door shaft gear to rotate, thus deflecting the inner door. The inner door shaft gear also drives... Rotating the grooved rod B, which is coaxial with the bottom of the inner door, causes the sliding gear B, which meshes with the outer door shaft gear driven by its chain, to rotate. This allows the inner door to deflect, thus causing the outer door to deflect as well. During the downward vertical sliding of the sliding member, as the outer door moves downwards, the grooved rod A, fixed at the bottom of the outer door, slides downwards along the bottom tube. This allows the sliding gear B to slide vertically downwards along the groove, causing the outer door to move vertically as well. Once the outer door panel has deflected beyond its limit stop, the rotation of the handwheel is released. The spring can elastically expand to push the protruding tube upwards, thereby elastically pushing the sliding part and the outer door upwards. This allows the top edge of the outer door to abut the bottom of the limiting cap. The inner protruding strip is located inside the limiting plate, and its side surface contacts the curved side of the roller. This allows the driven rack to drive the sliding part to slide vertically downwards, thereby causing the outer door, hinged to the side of the sliding part, to slide downwards. This moves the top edge of the outer door to below the bottom edge of the limiting cap, releasing the limiting cap from its position on the outer door. When a shock wave from the outside of the tunnel moves towards the outer door... During impact, the outer door is limited by the top of the limiting cap inside, thus blocking the entire outer door and preventing it from deflecting inward. The outer and inner doors are further limited by the limiting angle protrusions B and A on their outer sides, further preventing the outer and inner doors from deflecting inward. When opening the cavern door from the outside, the user can pull down by holding the two sets of lifting handles to move the outer door downward to the same horizontal line as the inner door. This releases the limiting cap bottom edge's restriction on the top of the outer door, allowing the user to pull the outer door outward so that the outer and inner doors open synchronously.

2. The double-leaf tunnel door with explosion-proof wave suspension plate as described in claim 1, characterized in that: The inner convex strip is located inside the limiting plate, and the side surface of the inner convex strip is in contact with the curved side surface of the roller.

3. The double-leaf tunnel door with explosion-proof wave suspension plate as described in claim 1, characterized in that: A protruding tube is fixedly connected to the top of the inner side of the limiting plate, and a return spring is fixedly connected to the bottom end of the protruding tube. The bottom end of the return spring is fixed to the top surface of the inner protruding strip, and the vertical rod is located inside the return spring.

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