Hidden type airtight floor door

Abstract

The utility model discloses a hidden type airtight floor door which comprises a door frame, a cover plate, a fence mechanism, a driving piece, a door lock mechanism and an opening mechanism, one side of the cover plate is hinged to the door frame, one side of the fence mechanism is hinged to the door frame, the other side of the fence mechanism is hinged to the cover plate, and the fence mechanism forms a fence structure on the side edge of the door frame. The fence mechanism forms a folding structure in the door frame, the driving piece is connected with the cover plate and used for driving the cover plate to rotate, the door lock mechanism is arranged between the cover plate and the door frame, and the opening mechanism is installed on the inner side of the door frame and connected with the door lock mechanism. A linkage structure is formed by the fence mechanism and the cover plate, that is, movement of the fence mechanism is triggered by the cover plate, so that the problem of interference of movement of the cover plate and the fence caused by driving of an independent oil cylinder structure is avoided, the cover plate can be locked to the door frame by arranging the door lock mechanism, and the opening mechanism can be opened when the door lock mechanism cannot be unlocked from the outside. And the door lock mechanism is unlocked on the inner side.

Description

Technical Field

[0001] The utility model relates to the technical field of concealed sealed floor doors, and particularly relates to a concealed sealed floor door with an internal unlocking function. Background Art

[0002] The floor door is one of the components of the storage tank, and its main function is to block the maintenance passage of the storage tank from the ground space. When maintenance of the storage tank is required, the floor door is opened so that maintenance personnel can enter the underground space of the storage tank.

[0003] The Chinese Patent Database discloses a patent document named "A Double-opening Intelligent Hydraulic Floor Door", with the publication number CN216476951U. This double-opening intelligent hydraulic floor door includes a ground maintenance passage and a movable connecting piece IV. Above the inner wall of the ground maintenance passage, a door frame is fixed, and a hinge I is installed at the rear end of the door frame. A maintenance fence is installed outside the hinge I, and a movable connecting piece I is fixed outside the maintenance fence. A cylinder I is arranged outside the movable connecting piece I, and a movable connecting piece II is arranged outside the cylinder I. A hinge II is installed on one side of the door frame, and a ground door is installed outside the hinge II.

[0004] The above technical solution has the following deficiencies: (1) Two ground doors and a fence all need to be equipped with independent cylinders for driving, and the assembly operation is cumbersome and the cost is relatively high; (2) Since the cylinders of the ground door and the fence are different cylinders, if the fence cylinder fails, there is a risk of interference between the closing movement of the ground door and the position of the fence. Summary of the Utility Model

[0005] Embodiments of the present application provide a concealed sealed floor door to solve at least one problem in the background art solution.

[0006] Embodiments of the present application provide a concealed sealed floor door, including:

[0007] A door frame;

[0008] A cover plate, hinged to the door frame on one side, for forming a closed or open structure at the opening of the door frame;

[0009] A fence mechanism, hinged to the door frame on one side and to the cover plate on the other side. When the cover plate makes the door frame in an open state, the fence mechanism forms a surrounding structure on the side of the door frame. When the cover plate makes the door frame in a closed state, the fence mechanism forms a folding structure in the door frame;

[0010] A driving member, connected to the above cover plate, for driving the cover plate to rotate;

[0011] A door lock mechanism is disposed between the cover plate and the door frame, and the door lock mechanism is used to lock the cover plate to the door frame;

[0012] An opening mechanism is installed inside the door frame. The opening mechanism is connected to the door lock mechanism, and the opening mechanism is used to unlock the door lock mechanism inside the door frame.

[0013] The beneficial effects of the above embodiments are as follows: By forming a linkage structure between the fence mechanism and the cover plate, that is, the movement of the fence mechanism is triggered by the cover plate, so the problem of interference between the movement of the cover plate and the fence caused by the drive of an independent oil cylinder structure will not occur. By configuring the door lock mechanism, the cover plate can be locked to the door frame. By configuring the opening mechanism, when the door lock mechanism cannot be unlocked externally, it can be unlocked inside.

[0014] On the basis of the above embodiments, the embodiments of the present application can also be improved as follows:

[0015] In one embodiment of the present application: The fence mechanism includes: a first guardrail fixedly connected to the cover plate; a second guardrail hinged to the door frame; a connecting rod, one end of which is hinged to the first guardrail and the other end of which is hinged to the second guardrail. The beneficial effect of this step: The fence mechanism can be formed in a foldable or unfoldable form.

[0016] In one embodiment of the present application: The door lock mechanism includes: a lock catch rotatably connected to the cover plate. The lock catch has a rotating end and a locking end. The rotating end is used for an operator to rotate; a locking seat hinged to the door frame. The locking seat is provided with a limiting plate corresponding to the locking end. The limiting plate is provided with a through groove corresponding to the connection part of the locking end and the lock catch. When the door lock mechanism is locked, the locking end extends below the limiting plate and contacts the limiting plate for limiting. The beneficial effect of this step: By limiting the lock catch by the locking seat, the function of locking the cover plate to the door frame is realized.

[0017] In one embodiment of the present application: The opening mechanism includes: a handle hinged to the door frame; a connecting member, one end of which is hinged to the handle and the other end of which is hinged to the locking seat. The connecting member is used to drive the locking seat to rotate. The beneficial effect of this step: It is convenient for an operator to drive the connecting member to rotate through the handle.

[0018] In one embodiment of the present application: The opening mechanism further includes: a rotating shaft rotatably inserted into the handle. The connecting member has a threaded section and a hinged section. The threaded section is inserted into a through hole opened in the rotating shaft, and the hinged section is rotatably inserted into a hinged hole provided in the locking seat; a threaded member threadedly connected to the threaded section and positioning the connecting member on the rotating shaft. The beneficial effect of this step: It is convenient to adjust the position where the connecting member is positioned on the handle through the threaded member, which is convenient for the assembly operation of the opening mechanism.

[0019] In one embodiment of the present application: It further includes: a sealing strip, which is arranged in the sealing strip groove opened on the upper end surface of the door frame, and the sealing strip is used to form a contact seal with the cover plate. The beneficial effect of this step: The sealing effect when the floor door is closed is improved through the sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual ratio.

[0021] Figure 1 It is the first structural schematic diagram of the concealed closed floor door;

[0022] Figure 2 It is the second structural schematic diagram of the concealed closed floor door;

[0023] Figure 3 It is the third structural schematic diagram of the concealed closed floor door;

[0024] Figure 4 It is Figure 3 The partial enlarged view of A in

[0025] Figure 5 It is the structural schematic diagram of the door lock mechanism;

[0026] Figure 6 It is the fourth structural schematic diagram of the concealed closed floor door;

[0027] Figure 7 It is Figure 6 The partial enlarged view of B in

[0028] Figure 8 It is the folded state structural schematic diagram of the fence mechanism;

[0029] Figure 9 It is the first structural schematic diagram of the unfolding process of the fence mechanism;

[0030] Figure 10 It is the second structural schematic diagram of the unfolding process of the fence mechanism;

[0031] Figure 11 It is the fully unfolded structural schematic diagram of the fence mechanism.

[0032] Among them, 1 is the door frame;

[0033] 2 is the cover plate;

[0034] 3 Fence mechanism, 301 First guardrail, 302 Second guardrail, 303 Connecting rod;

[0035] 4 Driving member;

[0036] 5 Door lock mechanism, 501 Lock catch, 502 Locking seat, 503 Rotating end, 504 Locking end, 505 Limiting plate, 506 Through groove;

[0037] 6 Opening mechanism, 601 Base, 602 Handle, 603 Connecting member, 604 Rotating shaft, 605 Threaded member; 7 Sealing strip. Detailed implementation manner

[0038] In this application, unless otherwise clearly specified and limited, the terms in this application should be understood in a broad sense. For example, connection can be a fixed connection, a detachable connection or an integral one, can be directly connected, or can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of different terms in this utility model can be understood according to specific circumstances, and the scope of the specific meanings should be limited to realizing the functions of this application.

[0039] As Figures 1-7 As shown, a concealed sealed floor door includes: door frame 1, cover plate 2, fence mechanism 3, driving member 4, door lock mechanism 5, opening mechanism 6. One side of the cover plate 2 is hinged to the door frame 1, and the cover plate 2 is used to form a closed or open structure at the opening of the door frame 1. One side of the fence mechanism 3 is hinged to the door frame 1, and the other side is hinged to the cover plate 2. When the cover plate 2 makes the door frame 1 in an open state, the fence mechanism 3 forms a surrounding structure on the side of the door frame 1. When the cover plate 2 makes the door frame 1 in a closed state, the fence mechanism 3 forms a folding structure in the door frame 1. The driving member 4 is connected to the cover plate 2, and the driving member 4 is used to drive the cover plate 2 to rotate. The door lock mechanism 5 is arranged between the cover plate 2 and the above-mentioned door frame 1, and the door lock mechanism 5 is used to lock the cover plate 2 to the door frame 1. The opening mechanism 6 is installed inside the door frame 1, and the opening mechanism 6 is connected to the door lock mechanism 5. The opening mechanism 6 is used to unlock the door lock mechanism 5 inside the door frame 1.

[0040] Specifically, the door frame 1 is located at the entrance of the maintenance passage, and the periphery of the door frame 1 is connected to the foundation through brackets and anchor bolts.

[0041] Specifically, as Figures 1-3 As shown, the fence mechanism 3 includes: first guardrail 301, second guardrail 302, connecting rod 303. The first guardrail 301 is fixedly connected to the inner side of the cover plate 2, the second guardrail 302 is hinged to the door frame 1, one end of the connecting rod 303 is hinged to the first guardrail 301, and the other end is hinged to the second guardrail 302. This structure enables the fence mechanism 3 to form a foldable or expandable form.

[0042] Specifically, as Figures 1-3As shown in the figure, one side of the first guardrail 301 is fixedly connected to the inner side surface of one end of the cover plate 2. The second guardrail 302 is arranged on the other side of the door frame 1 relative to the cover plate 2. The lower end of the second guardrail 302 is hinged to the inner side of the door frame 1. One end of the connecting rod 303 is hinged to the lower end of the side of the first guardrail 301 facing away from the cover plate 2, and the other end of the connecting rod 303 is hinged to the side surface of the end of the second guardrail 302.

[0043] Specifically, as Figure 4 , 5 shown, the door lock mechanism 5 includes: a lock catch 501 and a locking seat 502. The lock catch 501 is rotatably connected to the cover plate 2. The lock catch 501 has a rotating end 503 and a locking end 504. The rotating end 503 is used for the operator to rotate. The locking seat 502 is hinged to the door frame 1. The locking seat 502 is provided with a limiting plate 505 corresponding to the locking end 504. The limiting plate 505 is provided with a through groove 506 corresponding to the connecting part of the locking end 504 and the lock catch 501. When the door lock mechanism 5 is locked, the locking end 504 extends below the limiting plate 505 and contacts and limits with the limiting plate 505. By limiting the lock catch 501 through the locking seat 502, the function of locking the cover plate 2 to the door frame 1 is realized.

[0044] Specifically, as Figure 4 , 5 shown, the lock catch 501 has an upper and lower structure. There are multiple lock catches 501 which are arranged at intervals in sequence on the side of the cover plate 2 facing away from the hinged side. The lock catch 501 is rotatably connected in a groove provided on the cover plate 2. When the cover plate 2 is closed on the door frame 1, the locking end 504 has a conical structure with a larger upper part and a smaller lower part.

[0045] Specifically, the opening mechanism 6 includes: a base 601, a handle 602, and a connecting piece 603. The base 601 is fixedly connected to the inner side surface of the door frame 1. The upper end of the handle 602 is hinged to the base 601. One end of the connecting piece 603 is hinged to the handle 602, and the other end is hinged to the locking seat 502. The connecting piece 603 is used to drive the locking seat 502 to rotate, and it is convenient for the operator to drive the connecting piece 603 to rotate through the handle 602.

[0046] Specifically, as Figure 4 , 5As shown in the figure, the opening mechanism 6 further includes: a rotating shaft 604 and a threaded member 605. The rotating shaft 604 is rotatably inserted into the handle 602. The connecting member 603 has a threaded section and a hinged section. The connecting member 603 is of a U-shaped structure. The threaded section is two vertical sides of the U-shaped structure, and the hinged section is the horizontal side of the U-shaped structure. The threaded section is inserted into a through hole opened in the rotating shaft 604, and the hinged section is rotatably inserted into a hinged hole provided in the locking seat 502. The threaded member 605 is threadedly connected to the threaded section and positions the connecting member 603 on the rotating shaft 604. The threaded member 605 is a nut. Two threaded members 605 are connected to each threaded section, and the two threaded members 605 are respectively located on the upper and lower sides of the rotating shaft 604. The connecting member 603 is adjustably connected to the handle 602 through the threaded member 605, facilitating the assembly operation of the opening mechanism 6. When it is necessary to unlock the door lock mechanism 5 from the maintenance passage, rotate the handle 602 upward, and the hinged section pushes the locking seat 502 to rotate. The locking seat 502 is separated from the lock catch 501, thereby unlocking the door lock mechanism 5 from the inside.

[0047] Specifically, as Figure 6 , 7 shown, the concealed sealed floor door further includes: a sealing strip 7. The sealing strip 7 is arranged in a sealing strip 7 groove opened on the upper end surface of the door frame 1. The sealing strip 7 is used to form a contact seal with the cover plate 2, and the sealing effect when the concealed sealed floor door is closed is improved through the sealing strip 7.

[0048] When the cover plate 2 and the door frame 1 form a closed structure, Figure 8 is a folding state diagram of the fence mechanism 3. When it is necessary to open the floor door, Figure 9 and Figure 10 are process diagrams of the movement of the fence mechanism 3, Figure 11 is a fully unfolded state diagram of the fence mechanism 3, that is, a linkage structure is formed between the fence mechanism 3 and the cover plate 2. The movement of the fence mechanism 3 is triggered by the cover plate 2. Therefore, there will be no problem of interference between the movement of the cover plate 2 and the fence caused by the drive of an independent oil cylinder structure. At the same time, by configuring the door lock mechanism 5, the cover plate 2 can be locked to the door frame 1, and in cooperation with the opening mechanism 6, when an unexpected situation causes the external unlocking of the door lock mechanism 5 to fail, the door lock mechanism 5 can be unlocked from the inside.

[0049] The above are only the embodiments of the present utility model. Common knowledge such as specific structures and characteristics known in the art is not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, are able to learn all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A hidden closed floor door, characterized in that: include: Door frame; A cover plate, one side of which is hinged to the door frame and is used to form a closed or open structure at the opening of the door frame; A fence mechanism, one side of which is hinged to the door frame, and the other side of which is hinged to the cover plate. When the cover plate puts the door frame in an open state, the fence mechanism forms a blocking structure on the side of the door frame. When the cover plate puts the door frame in a closed state, the fence mechanism forms a folding structure in the door frame. A driving member, connected to the cover plate, and used to drive the cover plate to rotate; A door lock mechanism is disposed between the cover plate and the door frame, and is used to lock the cover plate to the door frame; An opening mechanism is installed on the inner side of the door frame, the opening mechanism is connected to the door lock mechanism, and the opening mechanism is used to unlock the door lock mechanism on the inner side of the door frame.

2. The hidden enclosed floor door according to claim 1, characterized in that: The fence mechanism comprises: A first guardrail, fixedly connected to the cover plate; a second guardrail, hinged to the door frame; A connecting rod has one end hinged to the first guardrail and the other end hinged to the second guardrail.

3. The hidden enclosed floor door according to claim 1, characterized in that: The door lock mechanism comprises: A lock buckle, rotatably connected to the cover plate, the lock buckle having a rotating end and a locking end, the rotating end being used for an operator to rotate; The locking seat is hinged to the door frame, and the locking seat is configured with a limiting plate corresponding to the locking end. The limiting plate is provided with a through groove corresponding to the connection portion between the locking end and the lock buckle. When the door lock mechanism is locked, the locking end extends under the limiting plate and contacts with the limiting plate for limiting.

4. The hidden enclosed floor door according to claim 3, characterized in that: The opening mechanism comprises: a handle hinged to the door frame; A connecting piece, one end of which is hinged to the handle and the other end of which is hinged to the locking seat, and the connecting piece is used to drive the locking seat to rotate.

5. The hidden closed floor door according to claim 4, characterized in that: The opening mechanism also includes: A rotating shaft is rotatably inserted in the handle, the connecting piece has a threaded section and a hinged section, the threaded section is inserted in a through hole provided in the rotating shaft, and the hinged section is rotatably inserted in a hinged hole provided in the locking seat; A threaded member is threadedly connected to the threaded section and positions the connecting member on the rotating shaft.

6. The hidden enclosed floor door according to claim 1, characterized in that: Also includes: A sealing strip is arranged in a sealing strip groove provided on the upper end surface of the door frame, and the sealing strip is used to form a contact seal with the cover plate.

Images