Steel double-leaf flood gate

Abstract

The invention relates to a steel double-leaf flood-proof door which comprises a door frame, door leaves and upper and lower bolt clamping mechanisms arranged on the door leaves, a lower doorsill of the door frame is buried in a terrace, and the upper surface of the door frame is flush with the terrace; the upper part of the lower doorsill is provided with a plurality of openings for inserting bolts; the upper and lower bolt clamping mechanism comprises a bolt, a movable sinking water retaining block which moves up and down synchronously with the bolt is fixedly arranged on the bolt, the movable sinking water retaining block is in an L shape, the bottom face of the movable sinking water retaining block can cover the upper surface of the lower doorsill, and a rubber sealing piece is arranged on the side face of the movable sinking water retaining block to be attached to the door leaf. The lower doorsill is pre-buried in the terrace and kept on the terrace, when the plug pin is downwards inserted into the lower doorsill, the L-shaped movable sinking water retaining block moves downwards together, the bottom face of the L-shaped movable sinking water retaining block presses the lower doorsill, meanwhile, the side face of the L-shaped movable sinking water retaining block blocks a door crack in the bottom of the door leaf, and the good sealing and flood preventing functions are achieved.

Description

Technical Field

[0001] The invention relates to a special door, in particular to a steel double-leaf flood-proof door, belonging to the technical field of sealed doors. Background Art

[0002] In order to prevent floods from affecting subway station halls, flood-proof doors need to be installed at relevant passage locations. In specific engineering practices, only some large outdoor openings generally need to be installed with double-leaf flood-proof doors. If they are used in indoor scenes such as subway station halls, the sealing performance will be insufficient, resulting in insufficient flood-proof performance. Summary of the invention

[0003] The purpose of the present invention is to provide a steel double-leaf flood-proof door to solve the technical problem of insufficient sealing performance of the existing double-leaf flood-proof door.

[0004] The present invention adopts the following technical solutions:

[0005] A steel double-leaf flood-proof door, comprising a door frame, door leaves and an upper and lower latch clamping mechanism arranged on the door leaves, wherein a lower door sill 12 of the door frame is buried in the floor, and its upper surface is flush with the floor; a plurality of openings for inserting latches are arranged on the upper portion of the lower door sill 12; the upper and lower latch clamping mechanism 3 comprises a latch 13, on which a movable sinking water retaining block 11 which moves up and down synchronously with the latch is fixed, the movable sinking water retaining block 11 is L-shaped, and its bottom surface can cover the upper surface of the lower door sill 12, and a rubber seal is arranged on its side to be attached to the door leaf 8.

[0006] Preferably, the upper and lower latch clamping mechanism 3 includes a clamping device 10 , and the movable sinking water retaining block 11 and the latch 13 are fixed on the clamping device 10 .

[0007] Furthermore, the upper and lower latch clamping mechanism 3 includes a hand wheel 4 , and the clamping device 10 is driven by the hand wheel 4 .

[0008] Preferably, the protrusion is in the shape of a vertically long strip, and the outer surface of the protrusion is flush with the outer surface of the door leaf 8, so that the outermost end of the door gap of the double door is sealed.

[0009] Furthermore, an EPDM special-shaped sealing member is provided on the wedge surface.

[0010] Furthermore, the outer surface of the protrusion is flush with the outer surface of the door leaf 8 .

[0011] Furthermore, the wedge surface forms an angle of 50° with the door leaf surface.

[0012] Preferably, the door frame is made of rectangular steel pipe, and the frame of the door leaf is made of welded structure to meet the corresponding strength requirements of 8m flooding height.

[0013] Preferably, the entrance location is in underground spaces such as municipal subway halls and underground squares.

[0014] When the door leaf is in the closed state, by rotating the hand wheel, the clamping device drives the pin to fit tightly with the pin holes in the upper cross frame and the ground, thereby achieving: the periphery of the door leaf fits tightly with the sealing strip installed on the door frame; the sealing strip in the middle seam of the double leaves fits tightly; the movable sinking water retaining block fits tightly with the lower threshold / ground.

[0015] The beneficial effects of the present invention are:

[0016] 1) The lower threshold is embedded in the floor and maintained on the floor. When the latch is inserted into the lower threshold, the L-shaped movable sinking water retaining block moves downward together, and its bottom surface presses the lower threshold tightly. At the same time, its side surface blocks the door gap at the bottom of the door leaf, achieving a good sealing and flood prevention function;

[0017] 2) The center seam of the two door leaves is designed with a 50° wedge-shaped overlap structure, and an EPDM special-shaped seal is set. Through the extrusion of the left and right door leaves, the center seam is effectively sealed, thereby improving the flood prevention capability;

[0018] 3) The gaps in the entire door must be sealed and have good waterproof capabilities, which is especially suitable for the passageways of underground spaces such as municipal subway halls and underground squares. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The invention discloses a door frame structure schematic diagram of a steel double-leaf flood-proof door.

[0020] Figure 2 It is a vertical view of the door leaf of the present invention when it is closed.

[0021] Figure 3 It is a top view of the door leaf of the present invention when it is fully opened.

[0022] Figure 4 It is a schematic diagram of the overlapping of door leaves of the present invention.

[0023] Figure 5 This is a schematic diagram of the overlap in the middle seam of the door leaf.

[0024] Figure 6 This is a schematic diagram of the location of the latch at the bottom of the door leaf.

[0025] In the figure, 1. heavy-duty swing door hinge, 2. door frame, 3. upper and lower latch clamping mechanism, 4. detachable hand wheel, 5. movable lower sill, 6. sealing strip, 8. door leaf, 9. wedge-shaped sealing structure, 10. clamping device, 11. movable sinking water retaining block, 12. lower sill, 13. latch, 801. left door leaf, 802. right door leaf. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] See also Figure 1 , Figure 1 The door frame structure of the steel double-leaf flood-proof door and the location of the entrances to underground spaces such as municipal subway halls and underground squares are displayed.

[0028] The lower threshold 12 needs to be pre-buried under the floor. Figure 6 .

[0029] See also Figure 2 , Figure 2 The structure of the steel double-leaf flood-proof door when it is closed is shown, wherein the principle of using the hand wheel 4 to latch and lock the upper and lower latch clamping mechanisms 3 is a prior art, which is not described in detail in this embodiment.

[0030] See also Figure 6 , and combined with Figure 1-2 A steel double-leaf flood-proof door, comprising a door frame, a door leaf and an upper and lower latch clamping mechanism arranged on the door leaf, the lower threshold 12 of the door frame is buried in the floor, and the upper surface is flush with the floor; the upper part of the lower threshold 12 is provided with a plurality of openings for the insertion of latches; the upper and lower latch clamping mechanism 3 comprises a latch 13, on which is fixed a movable sinking water retaining block 11 which moves up and down synchronously with the latch, the movable sinking water retaining block 11 is L-shaped, the bottom surface of which can cover the upper surface of the lower threshold 12, and the side surface thereof is provided with a rubber seal attached to the door leaf 8.

[0031] This structural design allows the lower threshold to be embedded in the floor and maintained on the floor. When the latch is inserted downward into the lower threshold, the L-shaped movable sinking water retaining block moves downward together, with its bottom surface pressing the lower threshold, while its side surface seals the door gap at the bottom of the door leaf, achieving good sealing and flood prevention functions.

[0032] In this embodiment, continue to see Figure 6 The upper and lower latch clamping mechanism 3 includes a clamping device 10 , and the movable sinking water retaining block 11 and the latch 13 are fixed on the clamping device 10 .

[0033] In this embodiment, see Figure 2 and Figure 6 ,, the upper and lower latch clamping mechanism 3 includes a hand wheel 4, and the clamping device 10 is driven by the hand wheel 4.

[0034] In this embodiment, see Figure 5 Combined with Figure 2 One of the door leaves is provided with a convex block at the center seam of the two door leaves, and the convex block has a wedge surface. The other door leaf is provided with a notch, and the notch is correspondingly fitted with the wedge surface.

[0035] Further preferably, an EPDM special-shaped seal is provided on the wedge surface. The protrusion is in the shape of a vertical strip, and the outer surface of the protrusion is flush with the outer surface of the door leaf (8), so that the outermost end of the door gap of the double door is sealed.

[0036] The center seam of the two door leaves is designed with a 50° wedge-shaped overlap structure, and an EPDM special-shaped seal is set. Through the extrusion of the left and right door leaves, the center seam is effectively sealed, which improves the flood prevention capability.

[0037] In this embodiment, the door frame is made of rectangular steel pipes, and the frame of the door leaf is made of welded structure, which meets the corresponding strength requirements of a flood height of 8m.

[0038] When the door leaf is in the closed state, by rotating the hand wheel, the clamping device drives the latch to closely cooperate with the latch hole on the upper horizontal frame and the ground, so as to achieve: the sealing strip installed on the door frame is closely fitted around the door leaf; the sealing strip in the middle seam of the double leaves is closely fitted; the movable sinking water retaining block is closely fitted with the lower threshold / ground. The gap of the entire door can be sealed and has good waterproof ability, which is especially suitable for use at the passageway of underground spaces such as municipal subway halls and underground squares.

[0039] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A steel double-leaf flood-proof door, comprising a door frame, a door leaf (8) and an upper and lower latch clamping mechanism (3) arranged on the door leaf, characterized in that: The lower threshold (12) of the door frame is buried in the floor, and the upper surface is flush with the floor; the upper part of the lower threshold (12) is provided with a plurality of openings for inserting latches; The upper and lower latch clamping mechanism (3) comprises a latch (13), on which a movable sinking water retaining block (11) is fixedly provided and moves up and down synchronously with the latch. The movable sinking water retaining block (11) is L-shaped, and its bottom surface can cover the upper surface of the lower threshold (12), and its side surface is attached to the door leaf (8).

2. The steel double-leaf flood-proof door according to claim 1, characterized in that: The upper and lower latch clamping mechanism (3) comprises a clamping device (10), and the movable sinking water retaining block (11) and the latch (13) are fixed on the clamping device (10).

3. The steel double-leaf flood-proof door according to claim 2, characterized in that: The upper and lower latch clamping mechanism (3) comprises a hand wheel (4), and the clamping device (10) is driven by the hand wheel (4).

4. The steel double-leaf flood-proof door according to claim 1, characterized in that: One of the door leaves is provided with a convex block at the middle seam of the two door leaves, and the convex block has a wedge surface. The other door leaf is provided with a notch, and the notch is correspondingly fitted with the wedge surface.

5. The steel double-leaf flood-proof door according to claim 4, characterized in that: The wedge surface is provided with an EPDM special-shaped sealing member.

6. The steel double-leaf flood-proof door according to claim 4, characterized in that: The protrusion is in the shape of a vertically long strip, and the outer surface of the protrusion is flush with the outer surface of the door leaf (8), so that the outermost end of the door gap of the double door is sealed.

7. The steel double-leaf flood-proof door according to claim 4, characterized in that: The wedge surface forms an angle of 50° with the door leaf surface.

8. The steel double-leaf flood-proof door according to claim 1, characterized in that: The door frame is made of rectangular steel pipe, and the frame of the door leaf is made of welded structure, which meets the corresponding strength requirements of 8m flooding height.

9. The steel double-leaf flood-proof door according to claim 1, characterized in that: The steel double-leaf flood-proof door is installed at the passage entrance of the municipal subway hall or the underground space of the underground square.

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