A positioning and sealing device for a flap threshold civil air defense door

Abstract

This application relates to a positioning and sealing device for a fire-resistant door with a movable threshold, including a base and a threshold. A door panel is provided on the threshold, and a sealing assembly is provided on the base. The sealing assembly includes two sealing plates distributed parallel to each other. The sealing plates are located on opposite sides of the door panel and abut against one side of the door panel. A driving component is provided on the base. When the door panel is rotated to the closed state, the driving component drives the sealing plates to move until one side of the sealing plate abuts against one side of the door panel. The sealing plates on both sides abut against and seal the opposite sides of the door panel. This application has a better sealing effect.

Description

Technical Field

[0001] This application relates to the field of air defense doors, and in particular to a positioning and sealing device for an air defense door with a movable threshold. Background Technology

[0002] A removable threshold air-raid shelter door is a specially designed protective device for civil defense projects, primarily used to balance wartime protection needs with peacetime ease of passage. Its core feature is that the threshold can be removed or retracted, keeping the ground level for easy passage during peacetime, and allowing for rapid installation to achieve airtight protection during wartime.

[0003] In related technologies, please refer to the utility model patent with announcement number CN211144172U, which discloses a civil defense door with a movable threshold, including a base and a door frame. The door frame is hinged to a door leaf. An installation groove is provided on the base, and a flap is rotatably connected to the installation groove. The flap includes a first plate and a second plate, which are perpendicular to each other. The surface of the first plate is flush with the upper surface of the base. A receiving groove is provided on the inner side wall of the installation groove, and the bottom of the receiving groove is flush with the bottom of the installation groove. The receiving groove is provided with a moving block, which abuts against one side of the second plate. The receiving groove is provided with a hydraulic cylinder, and the piston rod of the hydraulic cylinder is connected to the side of the moving block away from the second plate. After the flap rotates, the first plate abuts against the door frame, allowing the threshold of the civil defense door to be installed quickly.

[0004] The flap rotates to seal one side of the door frame, but since it only seals one side of the door frame, the sealing effect is not good. Utility Model Content

[0005] To address the issue of poor sealing when only one side of the door frame is sealed, this application provides a positioning and sealing device for a fire-resistant door with a movable threshold.

[0006] The positioning and sealing device for a movable threshold air-raid shelter door provided in this application adopts the following technical solution:

[0007] A positioning and sealing device for a fire-resistant door with a movable threshold includes a base and a threshold disposed on the base. A door panel is disposed on the threshold. A sealing assembly is disposed on the base. The sealing assembly includes two sealing plates disposed on the base and distributed parallel to each other. The sealing plates are located on opposite sides of the door panel in the width direction. One side of the sealing plate abuts against one side of the door panel. A driving member is disposed on the base for driving the sealing plates to move along the height direction of the door panel.

[0008] By adopting the above technical solution, the door panel is rotated to the closed state. At this time, the driving component drives the sealing plate to move to one side of the sealing plate and abut against one side of the door panel. The sealing plates on both sides abut against and seal the opposite sides of the door panel, resulting in a better sealing effect.

[0009] Optionally, the driving component includes a gear and a rack, the rack is slidably mounted on the base, the sealing plate is connected to one side of the rack, the gear is rotatably mounted on the base, the rack meshes with one side of the gear, and the base is provided with a connecting component for driving the gear to rotate.

[0010] By adopting the above technical solution, the connecting component drives the gear to rotate, which in turn drives the rack to move. The rack then drives the sealing plate to move for sealing, and the operation of driving the sealing plate to move is convenient.

[0011] Optionally, a sealing groove is provided on the base, and the sealing plate is slidably connected to the base through the sealing groove. A guide groove communicating with the sealing groove is provided on one side of the base, and the rack is slidably connected to the base through the guide groove.

[0012] By adopting the above technical solution, the sealing groove guides the sealing plate to slide into the sealing groove, facilitating the opening and closing of the air-raid shelter door, and the guide groove guides the sliding of the rack.

[0013] Optionally, the connecting member includes a first bevel gear and a second bevel gear, the second bevel gear being coaxially connected to the first gear, the first bevel gear being rotatably mounted on the base, the first bevel gear meshing with the second bevel gear on one side, a connecting rod being rotatably mounted on the base, the connecting rod being coaxially connected to the first bevel gear, and a locking member being provided on the base for rotating and locking the connecting rod.

[0014] By adopting the above technical solution, the rotation along the gear axis is converted to the vertical direction by the meshing of the first bevel gear and the second bevel gear, and the locking member locks the connecting rod, which facilitates the driving of the gear rotation.

[0015] Optionally, a second bevel gear is provided on both sides of the first bevel gear along the axial direction, with the second bevel gears on both sides being distributed opposite to each other.

[0016] By adopting the above technical solution, the first bevel gear synchronously drives the second bevel gears on both sides to rotate, thereby driving the gears on both sides to rotate synchronously and synchronously driving the sealing plates on both sides to slide, making the driving operation convenient.

[0017] Optionally, the locking component includes a worm gear and a worm. The worm gear is rotatably mounted on the base and coaxially connected to the connecting rod. The worm is rotatably mounted on the base, with one side of the worm meshing with one side of the worm gear, and the end of the worm away from the worm gear located outside the base.

[0018] By adopting the above technical solution, the rotating worm gear drives the worm wheel to rotate, which in turn drives the first bevel gear to rotate, driving the sealing plate to move. At the same time, the worm wheel and worm gear are self-locking, which facilitates the timely opening and closing of the air-raid shelter door.

[0019] Optionally, the sealing plate has a dovetail groove on the side facing the door panel, and a rubber sealing layer is provided on the sealing plate at the sealing groove, with one side of the rubber sealing layer adhering to one side of the door panel.

[0020] By adopting the above technical solution, the door panel is sealed with a rubber sealing layer. When the rubber sealing layer is worn, it is removed from the dovetail groove and a new rubber sealing layer is installed to ensure the sealing effect.

[0021] Optionally, a handwheel is coaxially provided at the end of the worm gear opposite to the worm wheel.

[0022] By adopting the above technical solution, the worm gear is driven to rotate by rotating the handwheel, which in turn drives the worm wheel to rotate, making it convenient to adjust the position of the sealing plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Rotate the door panel to the closed position. At this time, the drive unit drives the sealing plate to move to one side of the sealing plate and abut against one side of the door panel. The sealing plates on both sides abut against the opposite sides of the door panel to seal, resulting in a better sealing effect.

[0025] 2. The first bevel gear synchronously drives the second bevel gears on both sides to rotate, thereby driving the gears on both sides to rotate synchronously, and synchronously driving the sealing plates on both sides to slide, making the driving operation convenient;

[0026] 3. Seal the door panel with a rubber sealing layer. When the rubber sealing layer wears out, remove it from the dovetail groove and install a new rubber sealing layer to ensure a good seal. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of this application.

[0028] Figure 2 This is a three-dimensional structural diagram of the inner drive component and connector of the base in this application.

[0029] Figure 3 This is a sectional view of the base of this application located in the mounting groove along the vertical direction.

[0030] Those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be enlarged relative to other elements to aid in understanding the embodiments of the invention.

[0031] Reference numerals: 1. Base; 11. Sealing groove; 12. Guide groove; 13. Mounting groove; 14. Rotating rod; 15. Connecting rod; 16. Rotating groove; 2. Threshold; 3. Door panel; 4. Sealing plate; 41. Dovetail groove; 42. Rubber sealing layer; 5. Driving component; 51. Gear; 52. Rack; 6. Connecting component; 61. First bevel gear; 62. Second bevel gear; 7. Locking component; 71. Worm gear; 72. Worm; 73. Handwheel. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] This application discloses a positioning and sealing device for a two-person fire-resistant door with a movable threshold, referring to... Figure 1 and Figure 2 The system includes a horizontally positioned base 1 and a vertically positioned threshold 2 on the base 1. A door panel 3 is mounted on the threshold 2, with one downward-facing side of the door panel 3 abutting against one side of the base 1. A sealing assembly is mounted on the base 1, comprising two vertically positioned, parallel sealing plates 4. The sealing plates 4 are distributed along the length of the door panel 3 and located on opposite sides of the door panel 3 in the width direction. Both ends of the sealing plates 4 are abutting against the inner wall of the threshold 2, and one side of the sealing plates 4 abuts against one side of the door panel 3. The opposite sides of the sealing plates 4 abut against and seal the opposite sides of the door panel 3. A driving element 5 is mounted on the base 1 to drive the sealing plates 4 to move vertically. When the door panel 3 is rotated to the closed state, the driving element 5 drives the sealing plates 4 to move until one side of the sealing plates 4 abuts against one side of the door panel 3. Both sides of the sealing plates 4 abut against and seal the opposite sides of the door panel 3, resulting in a good sealing effect.

[0034] Reference Figure 2 A sealing groove 11 is vertically provided on the upper side of the base 1. The sealing groove 11 is distributed along the length of the door panel 3. There are two sealing grooves 11 and they are parallel to each other. The sealing plates 4 on both sides are slidably connected to the base 1 through the sealing grooves 11 on both sides. The sealing grooves 11 guide the sealing plates 4 to slide into the sealing grooves 11, so as to facilitate the opening and closing of the air-raid shelter door.

[0035] Reference Figure 2 and Figure 3The driving component 5 includes a gear 51 and a rack 52. A guide groove 12, which communicates with the sealing groove 11, is vertically arranged on one side of the base 1. The rack 52 and the base 1 are slidably connected in the vertical direction through the guide groove 12. One side of the sealing plate 4 is connected to one side of the rack 52. A rack 52 is provided at both sides of the sealing plate 4. The gear 51 is rotatably installed at the guide groove 12 of the base 1 and meshes with one side of the gear 51. The axis of the gear 51 is consistent with the length direction of the base 1. The rotation of the gear 51 drives the rack 52 to move. The rack 52 drives the sealing plate 4 to move for sealing. The guide groove 12 guides the sliding of the rack 52.

[0036] Reference Figure 2 and Figure 3 A connector 6 is provided on the base 1. The connector 6 includes a first bevel gear 61 and a second bevel gear 62. The base 1 is provided with a mounting groove 13. The second bevel gear 62 is rotatably mounted in the mounting groove 13. A rotating rod 14 is rotatably mounted on the base 1. One end of the rotating rod 14 is coaxially fixedly connected to the gear 51, and the other end of the rotating rod 14 away from the gear 51 is coaxially fixedly connected to the second bevel gear 62. The first bevel gear 61 is rotatably mounted in the mounting groove 13 of the base 1. The axis of the first bevel gear 61 is vertically distributed. The first bevel gear 61 meshes with the second bevel gear 62 on one side. The second bevel gear 62 is provided on both sides of the axis of the first bevel gear 61. The second bevel gears 62 on both sides are distributed opposite each other. The first bevel gear 61 synchronously drives the second bevel gears 62 on both sides to rotate, thereby driving the gears 51 on both sides to rotate synchronously, and synchronously driving the sealing plates 4 on both sides to slide.

[0037] Reference Figure 2 and Figure 3 A connecting rod 15 is rotatably mounted on the base 1 in the vertical direction. The upward end of the connecting rod 15 is coaxially and fixedly connected to the first bevel gear 61. A locking component 7 is provided on the base 1. The locking component 7 includes a worm gear 71 and a worm 72. A rotating groove 16 is provided on the base 1. The rotating groove 16 is located below the mounting groove 13. The worm gear 71 is rotatably mounted in the rotating groove 16 of the base 1. The downward end of the connecting rod 15 is coaxially and fixedly connected to the worm gear 71. The worm 72 is rotatably mounted on the base 1 in the horizontal direction. One end of the worm 72 is located in the rotating groove 16 of the base 1. One side of the worm 72 meshes with one side of the worm gear 71. The end of the worm 72 away from the worm gear 71 is located on the outside of the base 1. A handwheel 73 is coaxially provided on the end of the worm 72 away from the worm gear 71. The handwheel 73 rotates, which drives the worm gear 72 to rotate, which in turn drives the worm wheel 71 to rotate, which in turn drives the first bevel gear 61 to rotate, which in turn drives the sealing plate 4 to move. At the same time, the worm wheel 71 and worm gear 72 are self-locking, which makes it convenient to open and close the air defense door in a timely manner.

[0038] Reference Figure 2 and Figure 3A dovetail groove 41 is provided along the length of the sealing plate 4 on the side facing the door panel 3. A rubber sealing layer 42 is provided on the sealing plate 4 at the sealing groove 11, and one side of the rubber sealing layer 42 is attached to one side of the door panel 3. The door panel 3 is sealed by the rubber sealing layer 42. When the rubber sealing layer 42 is worn, the rubber sealing layer 42 is removed from the dovetail groove 41 and a new rubber sealing layer 42 is installed to ensure the sealing effect.

[0039] The implementation principle of the positioning and sealing device of the movable threshold air-raid shelter door in this application embodiment is as follows: When the door panel 3 is rotated to the closed state, the worm gear 72 is rotated to drive the worm wheel 71 to rotate. The worm wheel 71 drives the first bevel gear 61 to rotate. The first bevel gear 61 drives the second bevel gears 62 on both sides to rotate, which in turn drives the gears 51 on both sides to rotate. The gears 51 drive the rack 52 to slide, which in turn drives the sealing plate 4 to move to one side of the sealing plate 4 and abut against one side of the door panel 3. The sealing plates 4 on both sides abut against and seal the opposite sides of the door panel 3. When it is necessary to open the door panel 3, the worm gear 72 is rotated to drive the worm wheel 71 to rotate, which drives the first bevel gear 61 to rotate, which in turn drives the second bevel gear 62 to rotate. Simultaneously, the gears 51 on both sides rotate, which in turn drives the rack 52 to move, which drives the sealing plates 4 on both sides to move to the inside of the sealing groove 11. At this time, the door panel 3 is opened.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning and sealing device for a fire-resistant door with a movable threshold, comprising a base (1) and a threshold (2) disposed on the base (1), wherein a door panel (3) is disposed on the threshold (2), and a sealing assembly is disposed on the base (1), characterized in that: The sealing assembly includes two sealing plates (4) disposed on the base (1) and distributed parallel to each other. The sealing plates (4) are located on opposite sides of the door panel (3) in the width direction. One side of the sealing plate (4) abuts against one side of the door panel (3). The base (1) is provided with a driving member (5) for driving the sealing plate (4) to move along the height direction of the door panel (3).

2. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 1, characterized in that: The driving component (5) includes a gear (51) and a rack (52). The rack (52) is slidably mounted on the base (1). The sealing plate (4) is connected to one side of the rack (52). The gear (51) is rotatably mounted on the base (1). The rack (52) meshes with one side of the gear (51). The base (1) is provided with a connecting component (6) that drives the gear (51) to rotate.

3. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 2, characterized in that: A sealing groove (11) is provided on the base (1). The sealing plate (4) is slidably connected to the base (1) through the sealing groove (11). A guide groove (12) communicating with the sealing groove (11) is provided on one side of the base (1). The rack (52) is slidably connected to the base (1) through the guide groove (12).

4. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 2, characterized in that: The connecting member (6) includes a first bevel gear (61) and a second bevel gear (62). The second bevel gear (62) is coaxially connected to the gear (51). The first bevel gear (61) is rotatably mounted on the base (1). The first bevel gear (61) meshes with the second bevel gear (62) on one side. A connecting rod (15) is rotatably mounted on the base (1). The connecting rod (15) is coaxially connected to the first bevel gear (61). A locking member (7) for rotating and locking the connecting rod (15) is provided on the base (1).

5. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 4, characterized in that: A second bevel gear (62) is provided on both sides of the first bevel gear (61) along the axial direction, and the second bevel gears (62) on both sides are distributed opposite to each other.

6. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 4, characterized in that: The locking component (7) includes a worm gear (71) and a worm (72). The worm gear (71) is rotatably mounted on the base (1). The worm gear (71) is coaxially connected to the connecting rod (15). The worm (72) is rotatably mounted on the base (1). One side of the worm (72) meshes with one side of the worm gear (71). The end of the worm (72) away from the worm gear (71) is located outside the base (1).

7. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 3, characterized in that: The sealing plate (4) is provided with a dovetail groove (41) on the side facing the door panel (3), and a rubber sealing layer (42) is provided on the sealing plate (4) at the sealing groove (11), and one side of the rubber sealing layer (42) is attached to one side of the door panel (3).

8. The positioning and sealing device for a fire-resistant door with a movable threshold according to claim 6, characterized in that: A handwheel (73) is coaxially mounted on one end of the worm gear (72) away from the worm wheel (71).

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