A civil air defense door for door leaf positioning and sealing

Abstract

The present application relates to a kind of civil air defense door for door leaf positioning and sealing, including door leaf and door frame, door leaf outer surface is centrally provided with hand wheel, hand wheel rear end is fixedly provided with threaded rod, door leaf inside is provided with locking assembly and is engaged with threaded rod, locking assembly includes two transmission shafts a arranged longitudinally in it, hand wheel rotation drives transmission shaft a to lock door leaf and door frame, the lower end of door leaf is provided with the roller that is away from hinge and supports door leaf, roller rotation drives the lubricating assembly for being arranged in the inside of door leaf and is lubricated hinge, locking assembly is driven sealing assembly to extrude door gap in the process of locking.The lower end of the present application is provided with roller away from hinge at civil air defense door, supports civil air defense door, makes heavy civil air defense door more convenient and fast in the process of opening and closing, and reduce the friction between door leaf and hinge, solve the problem that civil air defense door is not convenient to open and close because of heavy, door leaf is easily worn, poor sealing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil air defense door production, and particularly relates to a civil air defense door for door leaf positioning and sealing. BACKGROUND

[0002] Civil air defense, also known as civil defense, is a door of the entrance and exit of a people's air defense project, which belongs to civil defense protection equipment. Civil defense is an activity of government mobilization and organization of the public to take air raid prevention and disaster relief measures and implement rescue operations to prevent and mitigate disaster hazards. For example, the very thick and heavy cement-filled door of the underground garage in the community and the door of the emergency shelter all belong to civil air defense doors, which are used to protect the people in the shelter and block the door used for explosion and injury.

[0003] In the comparative document with the publication number CN110242174A, a civil air defense door is proposed, which includes a locking assembly and a sealing assembly. The locking assembly includes a locking transmission shaft, and the sealing assembly includes a sealing beam lifting mechanism transmission shaft. A synchronous transmission assembly is arranged between the locking transmission shaft and the sealing beam lifting mechanism transmission shaft. A rack section is arranged on the locking transmission shaft. The synchronous transmission assembly includes a reversing gearbox, a sliding block, a locking adjustment assembly, and an extension and swing rod.

[0004] The above comparative document also has the following defects: In the opening and closing process of the civil air defense door in the comparative document, the weight of the civil air defense door will generate a downward force on the bearing of the hinge, causing wear. Therefore, the present application proposes a civil air defense door for door leaf positioning and sealing. SUMMARY

[0005] The present application aims to solve the problems of the prior art. In the opening and closing process of the civil air defense door, a roller is arranged at the lower end of the hinge away from the civil air defense door, which supports the heavy civil air defense door and makes it more convenient to open and close. In the opening and closing process of the civil air defense door, the roller rolls and presses the lubricating assembly, which drives the lubricating oil in the lubricating assembly to be squeezed onto the bearing of the hinge, reducing the friction between the door leaf and the hinge and reducing the wear of the civil air defense door. In the process of locking the door leaf and the door frame by the transmission shaft a after the civil air defense door is closed, the sealing assembly is driven to generate a force towards the door gap, which can improve the sealing performance of the civil air defense door.

[0006] To solve the above technical problems, the technical solution adopted by the present application is as follows:

[0007] The utility model provides a kind of civil air defense door for door leaf positioning and seal, including door leaf and door frame, the door leaf outer surface is centrally provided with hand wheel, the rear end of hand wheel is fixedly provided with threaded rod, the inside of door leaf is provided with locking assembly and is engaged with threaded rod, the inside of locking assembly includes two transmission shaft a arranged longitudinally, hand wheel rotation drives transmission shaft a to lock door leaf and door frame, the lower end of door leaf is provided with roller away from hinge, the roller rotation drives the lubricating assembly arranged in the inside of door leaf to lubricate hinge, the locking assembly is extruded sealing assembly to door gap in the process of locking.

[0008] As a kind of preferred, the locking assembly further includes transmission shaft c arranged transversely, oblique thread arranged on transmission shaft c and engaged with threaded rod, taper tooth c is arranged at both ends of transmission shaft c, transmission shaft b is arranged longitudinally on both sides of transmission shaft c respectively, taper tooth b is arranged at the lower end of transmission shaft b and engaged with taper tooth c.

[0009] As a kind of preferred, the transmission shaft a, transmission shaft b and transmission shaft c are all limited by fixing part, threaded is arranged on the transmission shaft a, and the transmission shaft a is rotationally arranged on transmission shaft b.

[0010] As a kind of preferred, the upper end of transmission shaft a is provided with arc block, and the transmission shaft a and arc block are both slidingly arranged in the inside of door frame.

[0011] As a kind of preferred, the lubricating assembly includes cavity, push plate slidingly arranged in the cavity, return spring arranged at the rear end of push plate, push rod fixedly connected with push plate, fixed block fixedly connected with push rod, oil pipe communicated with the end of cavity and oil storage cavity arranged on oil pipe.

[0012] As a kind of preferred, the side of roller is provided with protruding block, and the contact surface of protruding block and fixed block is arc-shaped.

[0013] As a kind of preferred, the periphery of push plate is provided with rubber ring.

[0014] As another kind of preferred, the sealing assembly includes cavity, sliding block slidingly arranged in the cavity, spring fixedly connected with sliding block and pipeline communicated with cavity.

[0015] The utility model sets up roller at the lower end of civil air defense door away from hinge in the process of opening and closing of civil air defense door, supports civil air defense door, and makes heavy civil air defense door more convenient in the process of opening and closing.

[0016] The utility model extrudes lubricating assembly by rolling of roller in the process of opening and closing of civil air defense door, drives lubricating oil in lubricating assembly to extrude on bearing of hinge, reduces the friction between door leaf and hinge, and reduces the loss of civil air defense door.

[0017] The present application can improve the sealing performance of the civil air defense door by driving the sealing assembly to generate a force towards the door gap during the process of locking the door leaf and the door frame by the transmission shaft a after the civil air defense door is closed.

[0018] In summary, the device has the advantages of convenient operation, small friction, strong sealing, etc., and is especially suitable for the civil air defense door production technical field. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The present application is a front view structure schematic diagram.

[0021] Figure 2 The present application is an internal structure schematic diagram.

[0022] Figure 3 The present application is an isometric structure schematic diagram.

[0023] Figure 4 The present application is a sectional view structure schematic diagram.

[0024] Figure 5 The present application is an A part enlarged structure schematic diagram.

[0025] Figure 6 The present application is a B part enlarged structure schematic diagram.

[0026] In the figure: 1-door leaf; 2-door frame; 3-hand wheel; 4-locking assembly; 5-roller; 6-lubricating assembly; 7-sealing assembly; 8-arc block; 31-threaded rod; 41-transmission shaft a; 42-transmission shaft c; 43-oblique teeth; 44-conical teeth c; 45-transmission shaft b; 46-conical teeth b; 47-fixing piece; 48-thread; 51-protruding block; 62-push plate; 63-return spring; 64-push rod; 65-fixing block; 66-oil pipe; 67-oil storage cavity; 68-rubber ring; 71-cavity; 72-sliding block; 73-spring; 74-pipeline. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments.

[0028] EMBODIMENT

[0029] Referring to Figures 1-6 The civil defense door for door leaf positioning and sealing comprises a door leaf 1 and a door frame 2, a hand wheel 3 is arranged in the middle of the outer surface of the door leaf 1, a threaded rod 31 is fixedly arranged at the rear end of the hand wheel 3, a locking assembly 4 is arranged in the door leaf 1 and engaged with the threaded rod 31, two longitudinally arranged transmission shafts a41 are arranged in the locking assembly 4, the hand wheel 3 drives the transmission shaft a41 to lock the door leaf 1 and the door frame 2, a roller 5 is arranged at the lower end of the door leaf 1 away from the hinge and serves to support the door leaf 1, the roller 5 rotates to drive a lubricating assembly 6 arranged in the door leaf 1 to lubricate the hinge, and the locking assembly 4 drives a sealing assembly 7 to extrude towards the door gap during locking.

[0030] It is worth mentioning that the roller 5 is arranged at the lower end of the door leaf 1 away from the hinge during opening and closing of the civil defense door, which serves to support the civil defense door and makes the heavy civil defense door more convenient to open and close.

[0031] Referring to Figures 2-3 The locking assembly 4 further comprises a transversely arranged transmission shaft c42, an inclined tooth 43 arranged on the transmission shaft c42 and engaged with the threaded rod 31, taper teeth c44 arranged at both ends of the transmission shaft c42, longitudinally arranged transmission shafts b45 arranged on both sides of the transmission shaft c42, and taper teeth b46 arranged at the lower end of the transmission shaft b45 and engaged with the taper teeth c44.

[0032] Referring to Figures 2-3 The transmission shafts a41, b45 and c42 are limited by a fixing member 47, the transmission shaft a41 is provided with a thread 48, and the transmission shaft a41 is rotatably arranged on the transmission shaft b45. The upper end of the transmission shaft c42 is provided with an arc-shaped block 8, and the transmission shaft c42 and the arc-shaped block 8 are both slidingly arranged in the door frame 2.

[0033] It is worth mentioning that the arc-shaped block 8 is inserted into the door frame 2, so that the door leaf 1 and the door frame 2 are locked with each other, thereby improving the safety and stability of the civil defense door.

[0034] Referring to Figures 4-5 The sealing assembly 7 comprises a cavity 71, a sliding block 72 slidingly arranged in the cavity 71, a spring 73 fixedly connected with the sliding block 72, and a pipeline 74 communicating with the cavity 71.

[0035] In this embodiment, the sealing assembly 7 is driven to generate a force towards the door gap during locking of the door leaf 1 and the door frame 2 by the transmission shaft a41 after the civil defense door is closed, so that the sealing performance of the civil defense door is improved.

[0036] Referring toFigures 4-6 The lubricating assembly 6 comprises a cavity, a push plate 62 slidingly arranged in the cavity, a reset spring 63 arranged at the rear end of the push plate 62, a push rod 64 fixedly connected with the push plate 62, a fixed block 65 fixedly connected with the push rod 64, an oil pipe 66 communicated with the end of the cavity, and an oil storage cavity 67 arranged on the oil pipe 66. The side of the roller 5 is provided with a protrusion 51, and the contact surface of the protrusion 51 and the fixed block 65 is arc-shaped. The periphery of the push plate 62 is provided with a rubber ring 68.

[0037] It is worth mentioning that in the process of opening and closing of the civil air defense door, the lubricating assembly 6 is extruded by the rolling of the roller 5, so that the lubricating oil in the lubricating assembly 6 is extruded on the bearing of the hinge, the friction between the door leaf 1 and the hinge is reduced, and the loss of the civil air defense door is reduced.

[0038] The working process is as follows:

[0039] When the civil air defense door is manually pushed, the lower roller 5 rotates, and the protrusion 51 on the roller 5 intermittently extrudes the fixed part 47 in the rotating process, so that the lubricating oil in the oil storage cavity 67 flows to the bearing of the civil air defense door.

[0040] When the door leaf 1 of the civil air defense door is in the closed state with the door frame 2, the hand wheel 3 is manually rotated, the threaded rod 31 at the rear end of the hand wheel 3 is engaged with the oblique teeth 43, the oblique teeth 43 and the transmission shaft c 42 are rotated, the engagement between the tapered teeth b 46 and the tapered teeth c 4 is achieved, the transmission shaft b 45 is rotated, the arc-shaped block 8 on the transmission shaft a 41 is inserted into the door frame 2, the arc-shaped block 8 extrudes the sliding block 72, the sliding block 72 is extruded to the left spring 73, so that the fluid in the cavity 71 is extruded in the pipeline 74 to the door gap.

[0041] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements that can be easily thought of by those skilled in the art under the technical hints of the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0042] of the claims.

Claims

1. A civil defense door for door leaf positioning and sealing, comprising a door leaf (1) and a door frame (2), characterized in that: A handwheel (3) is centrally located on the outer surface of the door leaf (1). A threaded rod (31) is fixedly located at the rear end of the handwheel (3). A locking assembly (4) is located inside the door leaf (1) and engages with the threaded rod (31). The locking assembly (4) includes two longitudinally arranged transmission shafts a (41). The handwheel (3) rotates to drive the transmission shafts a (41) to lock the door leaf (1) and the door frame (2). A roller (5) is located at the lower end of the door leaf (1) away from the hinge to support the door leaf (1). The roller (5) rotates to drive the lubrication assembly (6) located inside the door leaf (1) to lubricate the hinge. During the locking process, the locking assembly (4) drives the sealing assembly (7) to press against the door gap. The lubrication assembly (6) includes a cavity (61), a push plate (62) slidably disposed in the cavity (61), a return spring (63) disposed at the rear end of the push plate (62), a push rod (64) fixedly connected to the push plate (62), a fixing block (65) fixedly connected to the push rod (64), an oil pipe (66) communicating with the end of the cavity (61), and an oil storage chamber (67) disposed on the oil pipe (66). The side of the roller (5) is provided with a protrusion (51), and the contact surface between the protrusion (51) and the fixing block (65) is arc-shaped; A rubber ring (68) is provided around the push plate (62).

2. A civil defense door for door leaf positioning and sealing according to claim 1, characterized in that, The locking assembly (4) further includes a transversely arranged transmission shaft c (42), a helical tooth (43) arranged on the transmission shaft c (42) and meshing with the threaded rod (31), a conical tooth c (44) arranged at both ends of the transmission shaft c (42), a transmission shaft b (45) arranged on both sides of the transmission shaft c (42) and arranged longitudinally, and a conical tooth b (46) arranged at the lower end of the transmission shaft b (45) and meshing with the conical tooth c (44).

3. A civil defense door for door leaf positioning and sealing according to claim 1, characterized in that, The drive shafts a (41), b (45) and c (42) are all limited by a fixing member (47). The drive shaft a (41) is provided with a thread (48), and the drive shaft a (41) is rotatably mounted on the drive shaft b (45).

4. A civil defense door for door leaf positioning and sealing according to claim 1, characterized in that, The sealing assembly (7) includes a cavity (71), a sliding block (72) slidably disposed in the cavity (71), a spring (73) fixedly connected to the sliding block (72), and a pipeline (74) communicating with the cavity (71).

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