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CN-121976737-A - Civil air defense flood gate with main and standby switching bottom seal and use method

CN121976737ACN 121976737 ACN121976737 ACN 121976737ACN-121976737-A

Abstract

The invention relates to the technical field of civil air defense flood-proof doors, in particular to a civil air defense flood-proof door with a main and standby switchable bottom seal, which comprises a left door leaf and a right door leaf, wherein the upper ends and two sides of the left door leaf and the right door leaf are respectively in sealing fit with a corresponding upper door frame and a corresponding side door frame through sealing rubber strips, and a center joint sealing structure is arranged at a center joint of the left door leaf and the right door leaf; the lifting type switchable sealing structure is arranged between the bottoms of the left door leaf and the right door leaf and the lower door frame, lower locking mechanisms are arranged on the left door leaf and the right door leaf, each lower locking mechanism comprises a lower locking connecting rod I on the back of the door leaf, and the lower locking connecting rod I is fixedly connected with the lifting type switchable sealing structure. The lifting type switchable sealing structure solves the technical problems that the sealing structure of the bottom of the existing flooding prevention door is single, the reliability of the bottom sealing cannot be quickly recovered after the sealing element fails, the in-situ switching and the on-line maintenance and replacement of the main and standby sealing elements of the bottom are realized, and the continuous reliability of the bottom sealing of the flooding prevention door is ensured.

Inventors

  • LEI CHONG
  • LI GUODONG
  • LIU QI
  • FU WEIGANG
  • HUANG CHENYU
  • JIANG YAPENG
  • LI KUANGYI
  • DENG MINFENG
  • ZHAO JINRONG
  • ZHOU WU
  • WANG XIAOFEI
  • YANG ZHOUZHOU
  • SHEN JIE
  • YU YUANBO
  • CHE LUNFEI
  • Du Qianzhou
  • SUN XINMING
  • XIA JIHAO
  • YANG LIZHEN
  • ZOU KAIXUAN
  • LI WENSHENG
  • LI SENSHENG
  • CHEN YUYUAN
  • CAI CHONGQING
  • LIN CHANGLONG
  • ZHANG LIQI
  • FENG TENG
  • PAN HUAYANG
  • Gao Weimeng

Assignees

  • 中铁第四勘察设计院集团有限公司

Dates

Publication Date
20260505
Application Date
20260225

Claims (13)

  1. 1. The anti-flooding door is characterized by comprising a left door leaf (100) and a right door leaf (200), wherein the upper ends and two sides of the left door leaf (100) and the right door leaf (200) are respectively in sealing fit with a corresponding upper door frame (310) and a corresponding side door frame (320) through sealing rubber strips, a middle seam sealing structure (330) is arranged at a middle seam of the left door leaf (100) and the right door leaf (200), a lifting type switchable sealing structure (400) is arranged between the bottoms of the left door leaf (100) and the right door leaf (200) and a lower door frame (340), lower locking mechanisms (500) are arranged on the left door leaf (100) and the right door leaf (200), the lower locking mechanisms (500) comprise lower locking connecting rods (510) on the back surfaces of the door leaves, and the lower locking connecting rods (510) are fixedly connected with the lifting type switchable sealing structure (400); The lifting type switchable sealing structure (400) comprises a protection frame (410) arranged on the back surface of a door leaf and a long shaft (420) which is arranged in the protection frame (410) and fixedly connected with a lower locking connecting rod I (510), wherein a rotary drum (430) capable of rotating around the axis of the long shaft (420) is sleeved on the long shaft (420), a first sealing element (440) and a second sealing element (450) are fixed on the rotary drum (430), the first sealing element (440) is driven to integrally downwards press the ground when the lower locking connecting rod I (510) moves downwards, a switching element (460) is arranged on one side, far away from the second sealing element (450), of the first sealing element (440), and after the rotary drum (430) rotates around the long shaft (420), the first sealing element (440) is rotated, and then the second sealing element (450) is switched to integrally downwards press the ground.
  2. 2. The security door with the bottom seal capable of being switched as claimed in claim 1, wherein a baffle plate (411) is fixed on one side of the protection frame (410), the switching piece (460) comprises a connecting rod (461) hinged with the first sealing piece (440) and an internal thread sleeve (462) hinged with the connecting rod (461), and a bolt (463) connected with the internal thread sleeve (462) is arranged on the baffle plate (411).
  3. 3. The people's air defense door with the switchable bottom seal according to claim 1, wherein an included angle alpha is formed between the first sealing element (440) and the second sealing element (450) and the rotary drum (430), and the included angle alpha is 30-45 degrees.
  4. 4. The personal protection flood gate with the switchable bottom seal is characterized in that the first sealing piece (440) and the second sealing piece (450) are symmetrically arranged along the middle line of an included angle alpha, the first sealing piece (440) and the second sealing piece (450) comprise fixing plates (471), one sides of the fixing plates (471) are hinged with buckling plates (472), the bottoms of the fixing plates (471) and the buckling plates (472) are oppositely arranged in a circular arc shape, tooth-shaped structures (477) are arranged on the inner sides of the circular arcs, buckling grooves (473) are formed in the fixing plates (471), buckling pieces (474) are arranged on the buckling plates (472), sealing strips (475) are clamped between the fixing plates (471) and the circular arcs at the bottoms of the buckling plates (472), and the fixing plates (471) and the buckling plates (475) are buckled and fixed through buckling grooves (473) and the buckling pieces (474) to clamp the sealing strips (475).
  5. 5. The people prevention and flooding door with the switchable bottom seal as set forth in claim 4, wherein the sealing waterproof plates (476) are fixed on the back surfaces of the left door leaf (100) and the right door leaf (200), and the sealing waterproof plates (476) are abutted with the sealing strips (475) when the sealing strips (475) are pressed down.
  6. 6. The security door with the switchable bottom seal as set forth in claim 1, wherein the center seam sealing structure (330) comprises a rubber strip groove (331) welded on the left door leaf (100) or the right door leaf (200), a center seam sealing rubber strip (332) installed in the rubber strip groove (331), and a pressing plate (333) arranged on the left door leaf (100) and the right door leaf (200).
  7. 7. The main and standby switchable bottom seal civil air defense door of claim 4 wherein the seal strip (475) is made of high compression ethylene propylene diene monomer material.
  8. 8. The security door with the switchable bottom seal as claimed in claim 1, wherein the lower locking mechanism (500) further comprises a second lower locking connecting rod (530) arranged inside the door leaf, the bottom of the second lower locking connecting rod (530) is fixedly connected with the lower lock head (540), and the second lower locking connecting rod (530) drives the lower lock head (540) to be inserted into the ground when moving downwards.
  9. 9. The security door with the switchable bottom seal as claimed in claim 1, wherein the location of the hand wheel (520) shaft lever perforation of the lower locking mechanism (500) and the installation area of the lower lock head (540) are respectively provided with a local sealing element, and the positions of the upstream surface handles (210) of the left door leaf (100) and the right door leaf (200) are respectively provided with a seepage-proof gasket.
  10. 10. The security door with the switchable bottom seal as set forth in claim 1, wherein a door driving mechanism (600) is disposed on the left door leaf (100) and the right door leaf (200), and the door driving mechanism (600) is connected with the left door leaf (100) and the right door leaf (200) and is used for driving the left door leaf (100) and the right door leaf (200) to open and close.
  11. 11. The main and standby switchable floor sealing civil air defense door according to claim 10, wherein the door leaf driving mechanism (600) adopts an externally hung travelling wheel driving structure (610), the externally hung travelling wheel driving structure (610) is arranged at the bottoms of the left door leaf (100) and the right door leaf (200), and the left door leaf (100) and the right door leaf (200) are pushed to be opened and closed by rolling through a motor driving roller (611).
  12. 12. The main and standby switchable bottom sealing civil air defense door according to claim 10, wherein the door leaf driving mechanism (600) adopts a crank arm sliding groove driving structure (620), the crank arm sliding groove driving structure (620) is arranged on the back water side, and the motor rotation motion is converted into the opening and closing motion of the left door leaf (100) and the right door leaf (200) through the cooperation of the crank arm (621) and the sliding groove (622).
  13. 13. A method of using the floor seal switchable civil air defense flooding door of any one of claims 1-12, comprising the steps of: s1, the left door leaf (100) and the right door leaf (200) are closed manually or driven by a door leaf driving mechanism (600), so that the upper ends, the two sides and the middle joint of the left door leaf (100) and the right door leaf (200) are respectively in sealing fit with an upper door frame (310), a side door frame (320) and a middle joint sealing structure (330); S2, driving a lower locking connecting rod I (510) of a lower locking mechanism (500) to move downwards, driving a long shaft (420) of a lifting type switchable sealing structure (400) to move downwards, driving a sealing element I (440) positioned at a working position on a rotary drum (430) to integrally press down the ground to finish bottom sealing, wherein a bolt (463), an internal thread sleeve (462) and the connecting rod (461) are positioned on the same plane at the moment, and a switching element (460) is kept in a locking state; S3, when the first sealing element (440) is damaged or the sealing effect is poor, the switching element (460) is operated, the bolt (463) is rotated, screw rod transmission is formed by the bolt (463) and the internal thread sleeve (462), the internal thread sleeve (462) is driven to axially move along the bolt (463) and approach the bolt (463), the connecting rod (461) hinged with the internal thread sleeve (462) is driven to synchronously move, the rotary drum (430) is pulled to rotate around the long shaft (420), the first sealing element (440) synchronously rotates to a standby position, the second sealing element (450) rotates to a working position facing the ground and downwards presses the ground, and sealing succession is completed; S4, after the second sealing piece (450) works normally, maintaining and replacing the first sealing piece (440) at the standby position, namely releasing the buckling of the buckling piece (474) on the buckling plate (472) and the buckling groove (473) on the fixed plate (471), taking out the damaged sealing strip (475), and after replacing the new sealing strip (475), buckling and fixing the sealing strip with the buckling piece (474) through the buckling groove (473) again to complete the replacement of the sealing strip; S5, after maintenance and replacement of the first sealing element (440) are completed, before the door is opened, the switching element (460) is required to be operated again, the bolt (463) is rotated, the rotary drum (430) is driven to reversely rotate around the long shaft (420), the first sealing element (440) is enabled to rotate to a working position facing the ground again, the second sealing element (450) is enabled to synchronously rotate to a standby position, and the first sealing element (440) is restored to be in an initial working state of main sealing and the second sealing element (450) is restored to be in a standby sealing state.

Description

Civil air defense flood gate with main and standby switching bottom seal and use method Technical Field The invention relates to the technical field of civil air defense flooding doors, in particular to a civil air defense flooding door with a bottom seal capable of being switched between active and standby and a use method. Background When the civil air defense engineering passageway and the underground space passageway encounter the conditions of storm, urban waterlogging, river channel backflow and the like, the risk of external water backflow is very easy to generate. In order to reduce the loss of personnel, equipment and facilities caused by the entry of water into civil air defense engineering, a protective door/flood gate with pressure bearing, airtight and flood preventing functions is usually arranged at an entrance and an exit in engineering. The flood gate needs to form reliable sealing at the upper end, two sides and the middle seam of the door leaf in the closed state, and meanwhile, the sealing between the bottom of the door leaf and the ground (or the lower door frame) is particularly critical, so that the integral flood-preventing capability and the reliability of long-term service are directly related. Chinese patent CN118361174A discloses a full-section flood-proof door which comprises a vertical hinged door, a door hinge and a door frame, wherein one side of the vertical hinged door is rotatably connected to one side of the door frame through the door hinge, first sealing strips are fixed to two sides of the door frame, which are attached to the vertical hinged door, the first sealing strips are fixed in the height direction of the vertical hinged door, a sealing assembly is arranged at the bottom of the vertical hinged door, and a plurality of groups of connecting rod mechanisms are arranged in a cavity of the vertical hinged door. The invention realizes the plugging of the top and the bottom of the flood gate through the lock tongue and the lock box by the plurality of groups of connecting rod mechanisms, realizes the locking function, and the sealing component arranged at the bottom realizes the sealing waterproof function of the bottom of the flood gate, so that the flood gate has wide integral application range and strong practicability. The bottom sealing structure of the flood gate adopts a single group of ground-attached sealing strips or a single compression type sealing piece to realize sealing, and the sealing strips are attached to the ground by pressing down by virtue of a locking mechanism. Due to factors such as ground construction errors, door leaf opening and closing abrasion, silt impurity clamping, aging and cracking of sealing strips, repeated compression fatigue and the like, the bottom sealing piece is easy to have the problems of insufficient compression resilience, local edge warping, damage and leakage and the like. Once the bottom sealing element fails, the bottom sealing element is often required to be stopped for maintenance or is required to be detached and replaced integrally, the sealing is difficult to realize in an emergency flood-proof scene, the single sealing element lacks redundancy, and the sealing performance of the whole door can be reduced due to one failure. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide the people anti-flooding door with the main sealing part and the standby sealing part capable of being switched, and the use method thereof, wherein the lifting type switchable sealing structure is arranged at the bottom of a door leaf, two groups of sealing parts are fixed on a rotary drum capable of rotating around a long shaft, and the main sealing part and the standby sealing part are matched with the switching part to realize the in-situ rotation switching of the main sealing part and the standby sealing part, when the main sealing part is damaged or has poor sealing effect, the main sealing part can be directly switched to the standby sealing part to continuously press the ground without opening the door and stopping the use, and meanwhile, the main sealing part is maintained and replaced on line during the normal working period of the standby sealing part, so that the double redundancy guarantee of the bottom sealing part and the alternate use of circulating main sealing part are realized. The technical problem that the reliability of the bottom seal cannot be quickly recovered under the conditions of no shutdown and no disassembly after the bottom seal structure of the existing flooding-proof door is single and the seal element fails is solved. In order to achieve the above object, the present invention provides the following technical solutions: The bottom sealing type anti-flooding door capable of being switched mainly and standby comprises a left door leaf and a right door leaf, wherein the upper ends and two sides of the left door leaf and the right door leaf are respectively matched with