A long-life reliable explosion door locking structure

Abstract

The application provides a long-life reliable explosion door locking structure, and relates to the technical field of civil air defense doors.The explosion door locking structure comprises a door leaf, a containing cavity arranged on the door leaf, a first sealing member, a locking mechanism, a second sealing member, a vacuum pump and a gas pressure gauge.The first sealing member is detachably connected with the door leaf.The locking mechanism comprises a first driving assembly and a locking pin.The locking pin is inserted into a locking pin hole.The first driving assembly is arranged on the door leaf and located in the containing cavity.The first driving assembly is connected with the locking pin.The second sealing member is detachably arranged on the door leaf.The vacuum pump is communicated with the containing cavity.The gas pressure gauge is communicated with the inside of the containing cavity.When the door leaf is in an open state, the containing cavity is sealed by the first sealing member and the second sealing member, the inside of the containing cavity is vacuumized by the vacuum pump, and the air pressure in the containing cavity is measured by the gas pressure gauge, so that the locking mechanism is located in the containing cavity in a vacuum state, and the erosion of the locking mechanism by a humid environment is effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of air defense doors, and in particular to a long-life and reliable explosion-proof door locking structure. Background Technology

[0002] Civil defense doors refer to the doors at the entrances and exits of civil defense projects. In related technologies, civil defense doors consist of a door frame and door panels, with the door panels connected to the frame by hinges and equipped with a locking mechanism. Because civil defense doors are mostly installed underground in dark, damp, and poorly ventilated environments, the hinges and locking mechanisms are prone to corrosion when not in use for extended periods, thus shortening the lifespan of the civil defense doors.

[0003] To address the aforementioned technical problems, invention application CN108518144A discloses an automatic lubrication device for the steel structure door frame of a civil defense door, comprising a door frame, a door panel, and an oil cup. A door hinge is fixed to the door frame via a door hinge seat. A connecting plate is fixed to the door panel and rotatably connected to the door hinge seat via a rotating shaft. An oil cup is installed on the door hinge seat. The lubricating oil in the oil cup lubricates and prevents corrosion of the rotating shaft, thereby extending the service life of the civil defense door. However, the aforementioned automatic lubrication device for the steel structure door frame of a civil defense door can only lubricate and prevent corrosion of the rotating shaft, but cannot lubricate and prevent corrosion of the locking mechanism of the civil defense door. This makes the locking mechanism of the civil defense door prone to rust, leading to malfunctions in the locking structure and affecting the overall service life of the civil defense door. Furthermore, the locking mechanism of civil defense doors in related technologies is usually located on the side wall of the door leaf, making it susceptible to damage from external factors. For example, in underground parking lots, the locking mechanism may be scratched by vehicles, further shortening the service life of the civil defense door. Summary of the Invention

[0004] The purpose of this application is to provide a long-life and reliable explosion-proof door locking structure to solve the problem that the locking mechanism of air-raid shelter doors in related technologies is prone to corrosion or damage due to external factors, thereby shortening the service life of air-raid shelter doors.

[0005] This application provides a long-life and reliable explosion-proof door locking structure using the following technical solution:

[0006] A long-life and reliable explosion-proof door locking structure includes:

[0007] Door leaf, wherein the door leaf is provided with a receiving cavity;

[0008] A first sealing element is detachably connected to the door leaf and is used to seal the receiving cavity;

[0009] A locking mechanism, comprising a first driving component and a locking pin, wherein the door leaf is provided with a locking pin hole communicating with the receiving cavity, the locking pin is inserted into the locking pin hole, the first driving component is disposed on the door leaf and located in the receiving cavity, the first driving component is connected to the locking pin, and the first driving component is used to drive the locking pin to slide along the axial direction of the locking pin hole;

[0010] The second sealing member is detachably mounted on the door leaf and is used to seal the lock pin hole;

[0011] A vacuum pump, which is connected to the receiving cavity, is used to evacuate the inside of the receiving cavity;

[0012] A pressure gauge is connected to the receiving cavity and is used to measure the air pressure inside the receiving cavity.

[0013] By adopting the above technical solution, when the door is in the open state, the receiving cavity is sealed by the first and second sealing components. At the same time, a vacuum pump is used to evacuate the inside of the receiving cavity, and the air pressure inside the receiving cavity is measured by a pressure gauge. This keeps the locking mechanism in a vacuum state inside the receiving cavity, effectively reducing the corrosion of the locking mechanism by the humid environment and preventing damage from external factors. This extends the service life of the locking mechanism, i.e., the long-life and reliable explosion-proof door locking structure of this application.

[0014] Optionally, the first driving assembly includes a first driving member, a driving rod, a first connecting rod, a first swing frame, and a second connecting rod. The driving rod is slidably mounted vertically on the door leaf. The first driving member is fixed on the door leaf and connected to the driving rod. The first swing frame is rotatably mounted on the door leaf. The two ends of the first connecting rod are respectively hinged to the driving rod and the first swing frame. The two ends of the second connecting rod are respectively hinged to the first swing frame and the locking pin.

[0015] By adopting the above technical solution, when the door is closed and needs to be locked, the first driving member drives the driving rod to slide downward, and then the first connecting rod, the first swing bracket and the second connecting rod drive the locking pin to extend along the locking pin hole to complete the locking. This structure can drive multiple locking pins to move at the same time, thereby simplifying the driving structure and improving the transmission efficiency.

[0016] Optionally, a support mechanism is also included, comprising a second driving member, a connecting shaft, a second swing frame, a third connecting rod, and a support column. The second driving member is fixed to the door leaf, the second swing frame is rotatably mounted on the door leaf, the second swing frame is provided with a sliding groove, the connecting shaft passes through the sliding groove, the second driving member is connected to the connecting shaft, the second driving member is used to drive the connecting shaft to move relative to the second swing frame, the support column is slidably mounted vertically on the door leaf, and the two ends of the third connecting rod are respectively hinged to the upper ends of the second swing frame and the support column.

[0017] By adopting the above technical solution, a support mechanism is provided on the door leaf. When the door leaf is in the open state, the support mechanism can support the door leaf, thereby avoiding stress concentration and extending its service life.

[0018] Optionally, the first sealing member includes multiple sealing plates. A frame-shaped protrusion is provided on one side wall of the door leaf. The side wall of the door leaf and the inner side wall of the frame-shaped protrusion enclose the receiving cavity. The receiving cavity has an open end structure. The end of the frame-shaped protrusion is provided with an abutment surface. A sealing gasket is fixed on one side of the sealing plate. Multiple sealing plates are arranged side by side and detachably connected to the frame-shaped protrusion. Multiple sealing plates seal the open end of the receiving cavity. The sealing gasket abuts against the abutment surface, and adjacent sealing gaskets abut against each other.

[0019] By adopting the above technical solution, the cavity is sealed by multiple sealing plates, which facilitates the installation and removal of the sealing plates.

[0020] Optionally, the side of the sealing gasket is a slope, and adjacent sealing gaskets abut against each other through the slope, and the inclination angles of the abutting slopes on adjacent sealing gaskets are complementary.

[0021] By adopting the above technical solution, the side of the sealing gasket is set as an inclined surface, and adjacent sealing gaskets abut against each other through the inclined surface, thereby making the adjacent sealing gaskets fit tightly and improving the sealing effect.

[0022] Optionally, the first closure further includes a support plate, wherein a groove is provided on the abutting surface of the frame-shaped boss, one side of the support plate abuts against the inner wall of the groove and is detachably connected to the frame-shaped boss, the other side of the support plate is flush with the abutting surface, the support plate is located at the joint where adjacent gaskets abut, and the support plate abuts against the side of the joint where adjacent gaskets abut.

[0023] By adopting the above technical solution, the support plate can support the side of the joint between adjacent sealing gaskets, and tightly clamp the adjacent sealing gaskets at the joint between the support plate and the sealing plate, thereby further improving the sealing effect.

[0024] Optionally, the second closure includes a stop block with a sealing layer fixedly mounted on it. The stop block is detachably connected to the frame-shaped boss, and the sealing layer abuts against the outer wall of the frame-shaped boss. The sealing layer is used to seal the locking pin hole.

[0025] By adopting the above technical solution, the locking pin hole is sealed by the sealing layer, thereby improving the sealing effect of the receiving cavity.

[0026] Optionally, it also includes a clutch mechanism and a manual drive assembly. The manual drive assembly is disposed on the door leaf and located within the receiving cavity. The manual drive assembly is connected to the clutch mechanism, which is detachably connected to the drive rod. The first drive member is detachably connected to the drive rod. The manual drive assembly is used to drive the clutch mechanism to move axially along the drive rod.

[0027] By adopting the above technical solution, the first driving component is separated from the driving rod and connected to the driving rod through a clutch mechanism. Then, the clutch mechanism and the driving rod are driven to move along the axial direction of the driving rod through a manual driving component, thereby completing the locking or unlocking of the locking mechanism. This prevents the first driving component from failing to work and thus preventing the locking mechanism from being inoperable in the event of a power outage or other power source interruption.

[0028] Optionally, the clutch mechanism includes a base, a slider, a slide rod, an elastic element, a lead screw, and a locking bolt. The manual drive assembly is connected to the base. The drive rod has a connecting rod and a connecting hole. The base has a first guide hole. The connecting rod slides through the first guide hole. The slider is slidably mounted on the base. The slide rod slides through the slider and can be inserted into the connecting hole. The elastic element is mounted on the slider and acts on the slide rod. The elastic element is used to push the slide rod towards the connecting rod. The lead screw is screwed to the base and rotatably connected to the slider. The locking bolt is screwed to the slider. The slide rod has a first positioning hole and a second positioning hole distributed axially. The locking bolt can be inserted into the first positioning hole or the second positioning hole.

[0029] By adopting the above technical solution, the slider can be driven to slide relative to the base by the lead screw, thereby adjusting the position of the slider so that it can be accurately inserted into the connection hole. At the same time, the elastic element acts on the slider so that the slider can be automatically inserted into the connection hole.

[0030] Optionally, the manual drive assembly includes a support, a stud, a sleeve, and a worm gear. The support is fixed to the door leaf and located within the receiving cavity. The sleeve is rotatably mounted on the support, and a worm wheel is provided on the outer periphery of the sleeve. The worm gear is rotatably mounted on the support and meshes with the worm wheel. The stud is screwed to the sleeve, and the base is fixed to the stud. The stud has a second guide hole coaxial with the first guide hole, and the connecting rod passes through the second guide hole.

[0031] By adopting the above technical solution, the worm can be rotated via the handwheel, which in turn drives the worm wheel and the screw sleeve to rotate. The screw sleeve then drives the stud and the drive rod to move. This transmission structure increases the torque transmitted from the handwheel end to the stud, thereby reducing the effort required to manually operate the manual drive components.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. When the door is in the open state, the receiving cavity is sealed by the first and second sealing components. At the same time, a vacuum pump is used to evacuate the inside of the receiving cavity, and the air pressure inside the receiving cavity is measured by a pressure gauge. This keeps the locking mechanism in a vacuum state inside the receiving cavity, effectively reducing the corrosion of the locking mechanism by the humid environment and preventing damage from external factors. This extends the service life of the locking mechanism, i.e., the long-life and reliable explosion-proof door locking structure of this application.

[0034] 2. The door leaf is equipped with a support mechanism. When the door leaf is in the open position, the support mechanism can support the door leaf, thereby reducing the load on the hinge seat and extending its service life.

[0035] 3. Separate the first driving component from the driving rod and connect it to the driving rod through a clutch mechanism. Then, drive the clutch mechanism and the driving rod to move along the axial direction of the driving rod through a manual driving component. This can lock or unlock the locking mechanism, thereby preventing the first driving component from failing to work and the locking mechanism from being unable to operate in the event of a power outage or other power source interruption. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the long-life and reliable explosion-proof door locking structure in the embodiments of this application;

[0037] Figure 2 This is a structural diagram of the supporting mechanism;

[0038] Figure 3 for Figure 1 A structural diagram omitting the sealing plate and gasket;

[0039] Figure 4 for Figure 3Structural diagram omitting the support plate;

[0040] Figure 5 for Figure 4 A magnified view of part B in the middle section;

[0041] Figure 6 for Figure 4 A sectional view;

[0042] Figure 7 for Figure 6 A magnified view of part C in the middle;

[0043] Figure 8 for Figure 6 A magnified view of part D in the middle;

[0044] Figure 9 This is a schematic diagram of the structure of the first closure component;

[0045] Figure 10 for Figure 9 A magnified view of part A in the diagram.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Door leaf; 11. Receiving cavity; 12. Locking pin hole; 13. First guide sleeve; 14. Frame-shaped boss; 141. Abutting surface; 142. Groove; 15. Hinge seat;

[0048] 20. First drive assembly; 21. First drive member; 211. First piston rod; 2111. Clearance hole; 22. Drive rod; 221. Connecting rod; 2211. Connecting hole; 23. First connecting rod; 231. Second hinge shaft; 232. Third hinge shaft; 24. First swing frame; 241. First hinge shaft; 25. Second connecting rod; 251. Fourth hinge shaft; 252. Fifth hinge shaft;

[0049] 30. Locking pin; 40. Vacuum pump; 50. Pressure gauge;

[0050] 60. Support mechanism; 61. Second driving component; 611. Second piston rod; 62. Connecting shaft; 63. Second swing frame; 631. Slide groove; 632. Eighth hinge shaft; 64. Third connecting rod; 641. Sixth hinge shaft; 642. Seventh hinge shaft; 65. Support column; 651. Support plate; 66. Second guide sleeve;

[0051] 70. Clutch mechanism; 71. Base; 711. First guide hole; 712. Limiting groove; 713. Through groove; 714. First screw hole; 72. Slider; 721. Second screw hole; 73. Slide rod; 731. Protruding plate; 732. First positioning hole; 733. Second positioning hole; 74. Elastic element; 75. Lead screw; 76. Locking bolt;

[0052] 80. Manual drive assembly; 81. Support; 82. Stud; 821. Second guide hole; 83. Screw sleeve; 831. Worm gear; 84. Worm; 841. Handwheel;

[0053] 90. Sealing plate; 100. Sealing gasket;

[0054] 110, First bolt; 120, Support plate; 130, Second bolt; 140, Stop block; 150, Sealing layer; 160, Third bolt; 170, Fourth bolt. Detailed Implementation

[0055] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 This application will be described in further detail below.

[0056] This application discloses a long-life and reliable explosion-proof door locking structure.

[0057] Reference Figure 1 and Figure 2 A long-life and reliable explosion-proof door locking structure includes a door leaf 10, a first sealing element, a locking mechanism, a second sealing element, a vacuum pump 40, a pressure gauge 50, and a support mechanism 60. The door leaf 10 is provided with a hinge seat 15. During installation, the door leaf 10 is rotatably mounted on the door frame through the hinge seat 15. The door leaf 10 is provided with a support mechanism 60. Since the door leaf 10 is usually heavy, when the door leaf 10 is in the open state, the support mechanism 60 can support the door leaf 10 to reduce the load on the hinge seat 15 and extend its service life.

[0058] In an optional embodiment, the support mechanism 60 has the following specific structure: The support mechanism 60 includes a second driving member 61, a connecting shaft 62, a second swing frame 63, a third connecting rod 64, and a support column 65. The second driving member 61 is fixed to the door leaf 10. The second swing frame 63 is rotatably mounted on the door leaf 10 via an eighth hinge shaft 632. The second swing frame 63 is provided with a sliding groove 631, through which the connecting shaft 62 passes. The second driving member 61 is connected to the connecting shaft 62 and is used to drive the connecting shaft 62 to move relative to the second swing frame 63. The door leaf 10 is provided with a second guide sleeve 66. The support column 65 slides vertically through the second guide sleeve 66 on the door leaf 10. The lower end of the support column 65 is provided with a support plate 651. The two ends of the third connecting rod 64 are respectively hinged to the upper ends of the second swing frame 63 and the support column 65 via a sixth hinge shaft 641 and a seventh hinge shaft 642.

[0059] In this embodiment, the second driving component 61 can be a second hydraulic cylinder module, and the connecting shaft 62 is rotatably connected to the second piston rod 611 of the second hydraulic cylinder module. When the door leaf 10 needs to be supported by the support mechanism 60, the connecting shaft 62 is driven to move by the second hydraulic cylinder module, and then the support column 65 is driven to move downward along the second guide sleeve 66 by the second swing frame 63 and the third connecting rod 64 until the support plate 651 contacts the ground, thereby achieving support for the door leaf 10.

[0060] Reference Figure 3 , Figure 4 and Figure 5 The door leaf 10 is provided with a receiving cavity 11. The locking mechanism includes a first drive assembly 20 and a locking pin 30. The door leaf 10 is provided with a locking pin hole 12 that communicates with the receiving cavity 11. The locking pin 30 is slidably inserted into the locking pin hole 12 in the transverse direction. The first drive assembly 20 is provided on the door leaf 10 and located in the receiving cavity 11. The first drive assembly 20 is connected to the locking pin 30. The first drive assembly 20 is used to drive the locking pin 30 to slide axially along the locking pin hole 12.

[0061] In an optional embodiment, the specific structure of the first drive assembly 20 and the specific connection relationship between the first drive assembly 20 and the locking pin 30 are as follows: The first drive assembly 20 includes a first drive member 21, a drive rod 22, a first connecting rod 23, a first swing frame 24, and a second connecting rod 25. A first guide sleeve 13 is fixed on the door leaf 10. The drive rod 22 slides vertically through the first guide sleeve 13 on the door leaf 10. The first drive member 21 is fixed on the door leaf 10 and connected to the drive rod 22. The first swing frame 24 is rotatably mounted on the door leaf 10 through a first hinge shaft 241. The two ends of the first connecting rod 23 are respectively hinged to the drive rod 22 and the first swing frame 24 through a second hinge shaft 231 and a third hinge shaft 232. The two ends of the second connecting rod 25 are respectively hinged to the first swing frame 24 and the locking pin 30 through a fourth hinge shaft 251 and a fifth hinge shaft 252.

[0062] A lock hole is provided on the door frame. When the door leaf 10 is closed and needs to be locked, the first driving member 21 drives the driving rod 22 to slide down along the first guide sleeve 13. Then, the first connecting rod 23, the first swing bracket 24 and the second connecting rod 25 drive the locking pin 30 to extend along the locking pin hole 12 and insert it into the lock hole to complete the locking.

[0063] Reference Figure 4 and Figure 5In this embodiment, the first driving component 21 can be a first hydraulic cylinder module, thereby enabling automatic locking or unlocking of the locking mechanism. To prevent the first hydraulic cylinder module from failing to operate in the event of a power outage or other power source interruption, thus preventing the locking mechanism from being inoperable, in this embodiment, the locking mechanism can be switched from automatic to manual drive mode through a clutch mechanism 70 and a manual drive assembly 80. More specifically, the manual drive assembly 80 is located on the door leaf 10 and within the receiving cavity 11. The manual drive assembly 80 is connected to the clutch mechanism 70, which is detachably connected to the drive rod 22. The manual drive assembly 80 drives the clutch mechanism 70 to move axially along the drive rod 22. The first driving component 21 is detachably connected to the drive rod 22.

[0064] Reference Figure 5 , Figure 6 and Figure 7 In this embodiment, the specific connection relationship between the first driving member 21 and the driving rod 22 is as follows: the end of the first piston rod 211 of the first cylinder module is provided with a clearance hole 2111, the upper end of the driving rod 22 is slidably inserted into the clearance hole 2111, and the upper end of the driving rod 22 is detachably connected to the first piston rod 211 of the first cylinder module by the fourth bolt 170.

[0065] When it is necessary to switch the locking mechanism from automatic drive to manual drive, first remove the fourth bolt 170, separate the first drive member 21 from the drive rod 22, then connect it to the drive rod 22 through the clutch mechanism 70, and then drive the clutch mechanism 70 and the drive rod 22 to move along the axial direction of the drive rod 22 through the manual drive assembly 80. Then, the first connecting rod 23, the first swing frame 24 and the second connecting rod 25 drive the locking pin 30 to extend and retract along the locking pin hole 12 to complete the locking or unlocking of the locking mechanism.

[0066] Reference Figure 5 , Figure 6 and Figure 8 In this embodiment, the specific structure of the clutch mechanism 70 is as follows: the clutch mechanism 70 includes a base 71, a slider 72, a slide rod 73, an elastic element 74, a lead screw 75, and a locking bolt 76. The manual drive assembly 80 is connected to the base 71. The drive rod 22 is provided with a connecting rod 221 with a square cross-section. The connecting rod 221 is provided with a plurality of connecting holes 2211 distributed along the axial direction. The base 71 is provided with a first guide hole 711. The connecting rod 221 slides through the first guide hole 711.

[0067] The base 71 is provided with a limiting groove 712 and a through groove 713 communicating with the limiting groove 712 and the first guide hole 711. The slider 72 is slidably disposed in the limiting groove 712 on the base 71. The slide rod 73 is slidably disposed on the slider 72. The slide rod 73 can pass through the through groove 713 and be inserted into the connecting hole 2211. The elastic element 74 is disposed on the slider 72 and acts on the slide rod 73. The elastic element 74 is used to push the slide rod 73 to slide toward the connecting rod 221. More specifically, the elastic element 74 is a spring. The slide rod 73 is provided with a protrusion 731. The spring is sleeved on the slide rod 73. The two ends of the spring abut against the protrusion 731 and the slider 72 respectively.

[0068] The base 71 is provided with a first screw hole 714. The lead screw 75 is screwed to the base 71 through the first screw hole 714 and is rotatably connected to the slider 72. The slider 72 is provided with a second screw hole 721. The locking bolt 76 is screwed to the slider 72 through the second screw hole 721. The slide rod 73 is provided with a first positioning hole 732 and a second positioning hole 733 distributed along the axial direction. The locking bolt 76 can be inserted into the first positioning hole 732 or the second positioning hole 733.

[0069] In automatic drive mode, the locking bolt 76 is inserted into the first positioning hole 732. At this time, the slide rod 73 is not inserted into the connecting hole 2211, and the connecting rod 221 can slide along the first guide hole 711 to avoid affecting the movement of the drive rod 22. In manual drive mode, the slide rod 73 is inserted into the connecting hole 2211, and the locking bolt 76 is inserted into the second positioning hole 733. At this time, the base 71 is moved by the manual drive assembly 80, which in turn moves the drive rod 22.

[0070] Reference Figure 5 , Figure 6 and Figure 8 In this embodiment, the specific structure of the manual drive assembly 80 is as follows: The manual drive assembly 80 includes a support 81, a stud 82, a sleeve 83, and a worm gear 84. The support 81 is fixed on the door leaf 10 and located in the receiving cavity 11. The sleeve 83 is rotatably mounted on the support 81. A worm wheel 831 is provided on the outer periphery of the sleeve 83. The worm gear 84 is rotatably mounted on the support 81 and meshes with the worm wheel 831. A handwheel 841 is provided at the end of the worm gear 84. The stud 82 is screwed to the sleeve 83. The base 71 is fixed to the stud 82. The stud 82 is provided with a second guide hole 821 that is coaxial with the first guide hole 711 and whose cross-section is adapted to the square connecting rod 221. The connecting rod 221 passes through the second guide hole 821.

[0071] In manual drive mode, when the slide bar 73 of the clutch mechanism 70 is inserted into the connection hole 2211, the operator can rotate the worm gear 84 through the handwheel 841. The worm gear 84 can drive the worm wheel 831 and the screw sleeve 83 to rotate, and the screw sleeve 83 can drive the stud 82 and the drive rod 22 to move.

[0072] Reference Figure 1 , Figure 9 and Figure 10 The first sealing member is detachably connected to the door leaf 10. The first sealing member is used to seal the receiving cavity 11. In an optional embodiment, the specific structure of the first sealing member and its specific connection relationship with the door leaf 10 are as follows: The first sealing member includes multiple sealing plates 90 and supporting plates 120. A frame-shaped protrusion 14 is provided on one side wall of the door leaf 10. The side wall of the door leaf 10 and the inner side wall of the frame-shaped protrusion 14 enclose the receiving cavity 11. The receiving cavity 11 has an open-end structure. (Refer to...) Figure 3 The end of the frame-shaped boss 14 is provided with an abutment surface 141. A sealing gasket 100 is fixed on one side of the sealing plate 90. The sealing gasket 100 can be made of rubber. Multiple sealing plates 90 are arranged side by side and are detachably connected to the frame-shaped boss 14 by the first bolt 110. Multiple sealing plates 90 are sealed at the opening end of the receiving cavity 11.

[0073] The sealing gasket 100 abuts against the contact surface 141, and adjacent sealing gaskets 100 abut against each other. More specifically, the side of the sealing gasket 100 is a slope, and adjacent sealing gaskets 100 abut against each other through the slope. The inclination angles of the slopes on adjacent sealing gaskets 100 that abut against each other are complementary.

[0074] Reference Figure 3 and Figure 7 The frame-shaped boss 14 has a groove 142 on its abutting surface 141. One side of the support plate 120 abuts against the inner wall of the groove 142 and is detachably connected to the frame-shaped boss 14 by a second bolt 130. The other side of the support plate 120 is flush with the abutting surface 141. The support plate 120 is located at the joint where adjacent sealing gaskets 100 abut. The support plate 120 abuts against the side of the joint where adjacent sealing gaskets 100 abut.

[0075] Since the inclination angles of the inclined surfaces that abut against each other on adjacent sealing gaskets 100 are complementary, and the side of the joint of adjacent sealing gaskets 100 is supported by the support plate 120, when the sealing plate 90 is connected to the frame-shaped boss 14, the sealing gasket 100 is squeezed by the sealing plate 90, so that the adjacent sealing gaskets 100 abut against each other tightly through the inclined surfaces, thereby achieving a good sealing effect on the gap between adjacent sealing plates 90.

[0076] The second sealing member is detachably mounted on the door leaf 10. The second sealing member is used to seal the lock pin hole 12. In an optional embodiment, the specific structure of the second sealing member and its specific connection relationship with the door leaf 10 are as follows: (Refer to...) Figure 1The second sealing element includes a stop block 140, on which a sealing layer 150 is fixed. The sealing layer 150 may be made of rubber. The stop block 140 is detachably connected to the frame-shaped boss 14 by a third bolt 160. The sealing layer 150 abuts against the outer wall of the frame-shaped boss 14 and is used to seal the locking pin hole 12.

[0077] A vacuum pump 40 is fixed to the door leaf 10 and is connected to the receiving cavity 11. The vacuum pump 40 is used to evacuate the inside of the receiving cavity 11. A pressure gauge 50 is fixed to the door leaf 10 and is connected to the receiving cavity 11. The pressure gauge 50 is used to measure the air pressure inside the receiving cavity 11.

[0078] When the door 10 is open, the first and second sealing members seal the receiving cavity 11. Simultaneously, a vacuum pump 40 evacuates the inside of the receiving cavity 11, and a pressure gauge 50 measures the internal pressure. This ensures the locking mechanism is in a vacuum state within the receiving cavity 11, effectively reducing the corrosive effects of a humid environment and preventing damage from external factors. This extends the service life of the locking mechanism, i.e., the long-life, reliable explosion-proof door locking structure of this application. When it is necessary to close the door 10, the first and second sealing members are removed, allowing the locking mechanism to be operated and locked.

[0079] The implementation principle of the long-life and reliable explosion-proof door locking structure in this embodiment is as follows: When the door leaf 10 is installed, it is rotatably mounted on the door frame through the hinge seat 15. When the door leaf 10 is in the open state, the connecting shaft 62 is driven to move by the second hydraulic cylinder module of the support mechanism 60. Then, the support column 65 is driven to move downward along the second guide sleeve 66 through the second swing frame 63 and the third connecting rod 64 until the support plate 651 contacts the ground, thereby supporting the door leaf 10, thereby reducing the load borne by the hinge seat 15 and extending its service life.

[0080] When the door 10 is closed and needs to be locked, the first driving member 21 drives the driving rod 22 to slide down along the first guide sleeve 13. Then, the first connecting rod 23, the first swing bracket 24 and the second connecting rod 25 drive the locking pin 30 to extend along the locking pin hole 12 to complete the locking.

[0081] When the first drive component 21 cannot work due to power failure or other power source interruption, the fourth bolt 170 is first removed to separate the first drive component 21 from the drive rod 22. Then, the clutch mechanism 70 is connected to the drive rod 22. The manual drive assembly 80 drives the clutch mechanism 70 and the drive rod 22 to move axially along the drive rod 22. Then, the first connecting rod 23, the first swing frame 24 and the second connecting rod 25 drive the locking pin 30 to extend and retract along the locking pin hole 12 to complete the locking or unlocking of the locking mechanism.

[0082] When the door 10 is open, the first and second sealing members seal the receiving cavity 11. Simultaneously, a vacuum pump 40 evacuates the inside of the receiving cavity 11, and a pressure gauge 50 measures the internal pressure. This ensures the locking mechanism is in a vacuum state within the receiving cavity 11, effectively reducing the corrosive effects of a humid environment and preventing damage from external factors. When it is necessary to close the door 10, the first and second sealing members are removed, allowing the locking mechanism to be operated and locked.

[0083] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A long-life and reliable explosion-proof door locking structure, characterized in that, include: Door leaf (10), the door leaf (10) is provided with a receiving cavity (11); The first sealing member is detachably connected to the door leaf (10) and is used to seal the receiving cavity (11); The locking mechanism includes a first drive assembly (20) and a locking pin (30). The door leaf (10) is provided with a locking pin hole (12) communicating with the receiving cavity (11). The locking pin (30) is inserted into the locking pin hole (12). The first drive assembly (20) is provided on the door leaf (10) and located in the receiving cavity (11). The first drive assembly (20) is connected to the locking pin (30). The first drive assembly (20) is used to drive the locking pin (30) to slide along the axial direction of the locking pin hole (12). The second sealing member is detachably mounted on the door leaf (10) and is used to block the lock pin hole (12); A vacuum pump (40) is connected to the receiving cavity (11) and is used to evacuate the inside of the receiving cavity (11); A barometer (50) is connected to the receiving cavity (11) and is used to measure the air pressure inside the receiving cavity (11).

2. The long-life and reliable explosion-proof door locking structure according to claim 1, characterized in that, The first drive assembly (20) includes a first drive member (21), a drive rod (22), a first connecting rod (23), a first swing frame (24), and a second connecting rod (25). The drive rod (22) is slidably mounted on the door leaf (10) in a vertical direction. The first drive member (21) is fixed on the door leaf (10) and connected to the drive rod (22). The first swing frame (24) is rotatably mounted on the door leaf (10). The two ends of the first connecting rod (23) are respectively hinged to the drive rod (22) and the first swing frame (24). The two ends of the second connecting rod (25) are respectively hinged to the first swing frame (24) and the locking pin (30).

3. The long-life and reliable explosion-proof door locking structure according to claim 1, characterized in that, It also includes a support mechanism (60), which includes a second driving member (61), a connecting shaft (62), a second swing frame (63), a third connecting rod (64), and a support column (65). The second driving member (61) is fixed on the door leaf (10), the second swing frame (63) is rotatably mounted on the door leaf (10), the second swing frame (63) is provided with a sliding groove (631), the connecting shaft (62) passes through the sliding groove (631), the second driving member (61) is connected to the connecting shaft (62), the second driving member (61) is used to drive the connecting shaft (62) to move relative to the second swing frame (63), the support column (65) is slidably mounted on the door leaf (10) in a vertical direction, and the two ends of the third connecting rod (64) are respectively hinged to the upper ends of the second swing frame (63) and the support column (65).

4. The long-life and reliable explosion-proof door locking structure according to claim 1, characterized in that, The first sealing member includes multiple sealing plates (90). A frame-shaped protrusion (14) is provided on one side wall of the door leaf (10). The side wall of the door leaf (10) and the inner side wall of the frame-shaped protrusion (14) enclose the receiving cavity (11). The receiving cavity (11) is an open structure at one end. The end of the frame-shaped protrusion (14) is provided with an abutment surface (141). A sealing gasket (100) is fixed on one side of the sealing plate (90). Multiple sealing plates (90) are arranged side by side and are detachably connected to the frame-shaped protrusion (14). Multiple sealing plates (90) block the opening end of the receiving cavity (11). The sealing gasket (100) abuts against the abutment surface (141). Adjacent sealing gaskets (100) abut against each other.

5. The long-life and reliable explosion-proof door locking structure according to claim 4, characterized in that, The side of the sealing gasket (100) is a slope, and adjacent sealing gaskets (100) abut against each other through the slope. The inclination angles of the slopes that abut against each other on adjacent sealing gaskets (100) are complementary.

6. The long-life and reliable explosion-proof door locking structure according to claim 4, characterized in that, The first closure also includes a support plate (120), and a groove (142) is provided on the abutment surface (141) of the frame-shaped boss (14). One side of the support plate (120) abuts against the inner wall of the groove (142) and is detachably connected to the frame-shaped boss (14). The other side of the support plate (120) is flush with the abutment surface (141). The support plate (120) is located at the joint where adjacent sealing gaskets (100) abut. The support plate (120) abuts against the side of the joint where adjacent sealing gaskets (100) abut.

7. The long-life and reliable explosion-proof door locking structure according to claim 4, characterized in that, The second sealing member includes a stop (140), on which a sealing layer (150) is fixed. The stop (140) is detachably connected to the frame-shaped boss (14), and the sealing layer (150) abuts against the outer wall of the frame-shaped boss (14). The sealing layer (150) is used to seal the locking pin hole (12).

8. The long-life and reliable explosion-proof door locking structure according to claim 2, characterized in that, It also includes a clutch mechanism (70) and a manual drive assembly (80), the manual drive assembly (80) being disposed on the door leaf (10) and located in the receiving cavity (11), the manual drive assembly (80) being connected to the clutch mechanism (70), the clutch mechanism (70) being detachably connected to the drive rod (22), the first drive member (21) being detachably connected to the drive rod (22), and the manual drive assembly (80) being used to drive the clutch mechanism (70) to move axially along the drive rod (22).

9. The long-life and reliable explosion-proof door locking structure according to claim 8, characterized in that, The clutch mechanism (70) includes a base (71), a slider (72), a slide rod (73), an elastic element (74), a lead screw (75), and a locking bolt (76). The manual drive assembly (80) is connected to the base (71). The drive rod (22) is provided with a connecting rod (221), and the connecting rod (221) is provided with a connecting hole (2211). The base (71) is provided with a first guide hole (711), and the connecting rod (221) slides through the first guide hole (711). The slider (72) slides on the base (71), and the slide rod (73) slides through the slider (72). 73) It can be inserted into the connecting hole (2211). The elastic element (74) is provided on the slider (72) and acts on the slide rod (73). The elastic element (74) is used to push the slide rod (73) to slide towards the connecting rod (221). The lead screw (75) is screwed to the base (71) and rotatably connected to the slider (72). The locking bolt (76) is screwed to the slider (72). The slide rod (73) is provided with a first positioning hole (732) and a second positioning hole (733) distributed along the axial direction. The locking bolt (76) can be inserted into the first positioning hole (732) or the second positioning hole (733).

10. The long-life and reliable explosion-proof door locking structure according to claim 9, characterized in that, The manual drive assembly (80) includes a support (81), a stud (82), a sleeve (83), and a worm (84). The support (81) is fixed on the door leaf (10) and located in the receiving cavity (11). The sleeve (83) is rotatably mounted on the support (81). The outer periphery of the sleeve (83) is provided with a worm wheel (831). The worm (84) is rotatably mounted on the support (81) and meshes with the worm wheel (831). The stud (82) is screwed to the sleeve (83). The base (71) is fixed to the stud (82). The stud (82) is provided with a second guide hole (821) coaxial with the first guide hole (711). The connecting rod (221) passes through the second guide hole (821).

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