Civil air defense steel structure double-leaf electric protective air-tight door

Abstract

The invention discloses a civil air defense steel structure double-leaf electric protective air-tight door which comprises a door frame. The two door plates are rotationally connected to the rear side of the door frame; a door framework is arranged in the door plate; the two transmission assemblies are arranged, and each transmission assembly is installed on the inner side face of the corresponding door plate; the two opening and closing assemblies are arranged, and each opening and closing assembly is installed on the top of the corresponding door plate; the locking assembly is arranged in the door framework; a worm speed reducer is further installed in the door framework and provided with double output ends and double input ends, and the double output ends of the worm speed reducer are connected with the locking assembly through couplings. By means of the design, an automatic door closing system adopted for manual door closing is replaced, the manual door closing function is reserved, an existing civil air defense door is improved and upgraded into an electric control mode to replace a manual door closing mode, the door opening and closing efficiency is controllable, adjustable and stable, and a response can be made quickly when wars come.

Description

Technical Field

[0001] The invention belongs to the technical field of protective airtight doors, and in particular relates to a double-leaf electric protective airtight door with a civil air defense steel structure. Background Art

[0002] Large double-leaf protective closed doors are generally installed at the entrances and exits of civil air defense basements or at the connecting ports of protection units. Such protective closed doors have excellent protective performance.

[0003] Traditional double-leaf enclosed doors of civil air defense steel structures are all manually closed and require the cooperation of two people. Closing the doors is time-consuming, labor-intensive and inefficient, so there are great limitations in actual use and there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to provide a double-leaf electric protective closed door with a civil air defense steel structure to replace the automatic door closing system used for manual door closing, and to improve and upgrade the existing civil air defense door to an electric control form to replace the manual door closing form, while retaining the manual door closing function, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a civil air defense steel structure double-leaf electric protective closed door, comprising a door frame; a door panel, which is provided with two leaves and is rotatably connected to the rear side of the door frame; a door frame is provided inside the door panel; a transmission assembly is also provided, which is provided with two groups, each group is respectively installed on the inner side of a door panel; an opening and closing assembly is provided, which is provided with two groups, each group is respectively installed on the top of a door panel; a locking assembly is provided inside the door frame; a worm gear reducer is also installed inside the door frame, and the worm gear reducer has a dual output , input end, wherein the dual output ends of the worm gear reducer are connected to the locking assembly through a coupling, and one of the input ends of the worm gear reducer is connected to the transmission assembly; an external handwheel is provided on the outer surface of the door panel, and the external handwheel is connected to the other input end of the worm gear reducer. When manual control is required, the control box is adjusted to single-step control, and the door leaf can be controlled by rotating the external handwheel for single-step movement. When closing the door manually, the control box is adjusted to manual closing. At this time, the stepper motor is released from the locked state, and the door can be opened, closed and locked.

[0006] As a preferred technical solution in the present invention, the transmission assembly includes an inner handwheel, a columnar body penetrating the door panel and connected to one of the input ends of the worm gear reducer is fixed at the center of the inner handwheel, and a sprocket is also arranged on the inner handwheel; a stepper motor 1 is also fixed to the inner side surface of the door panel, and a chain is connected between the output end of the stepper motor 1 and the sprocket. During use, the chain is driven by the stepper motor 1 to drive the sprocket on the inner handwheel and realize the driving of the inner handwheel. When the inner handwheel rotates, it can drive the worm gear reducer to rotate, thereby driving the locking assembly.

[0007] As a preferred technical solution in the present invention, the locking assembly includes a transverse transmission rod symmetrically installed on the output end of the worm gear reducer, and a reversing reducer installed at the end of the transverse transmission rod. The reversing reducer has a double output end, and a screw rod is connected to the double output end. The end of the screw rod is threadedly connected to a limit lock that passes through the door frame. When the worm gear reducer is driven by the inner hand wheel, the worm gear reducer will drive the transverse transmission rod and drive the reversing reducer through the transverse transmission rod, and the reversing reducer drives the limit lock to rise and fall through the screw rod.

[0008] As a preferred technical solution in the present invention, a sensor is also provided inside the door frame. The sensor is located outside the end of the limit lock and is used to detect the lifting and lowering of the limit lock to ensure the normal opening and closing of the subsequent door panel.

[0009] As a preferred technical solution in the present invention, the opening and closing component includes a bevel gear worm gear box fixed on the top of the door panel, and a door opening screw passing through the bevel gear worm gear box, and also includes a stepper motor 2 installed on the side of the bevel gear worm gear box, the output end of the stepper motor 2 is connected to the worm gear inside the bevel gear worm gear box, and the door opening screw is meshed with the worm gear in the bevel gear worm gear box. When the door panel needs to be opened, the worm gear is driven to rotate by the stepper motor 2, and the worm gear drives the door opening screw to gradually penetrate or gradually withdraw the bevel gear worm gear box. A connecting seat is fixed on the top of the door frame, and the end of the door opening screw is rotatably installed in the connecting seat. When the door opening screw moves in the bevel gear worm gear box, since one end of the door opening screw is limited, the door opening screw as a whole can achieve a swinging state, thereby achieving the purpose of opening and closing the door panel.

[0010] As a preferred technical solution in the present invention, the outer hand wheel, the inner hand wheel and the dual output ends of the worm gear reducer are on the same straight line.

[0011] As a preferred technical solution in the present invention, the outer surface of the door panel is against the inner side surface of the door frame on all sides, and the contact surfaces of the two are in a planar fit.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Through the design of the present invention, an automatic door closing system is used to replace manual door closing, while retaining the manual door closing function. The existing civil air defense door is improved and upgraded to an electric control form to replace the manual door closing form. The door opening and closing efficiency is controllable, adjustable and stable, and can respond quickly when war comes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a front view of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the present invention in an open state;

[0017] Figure 4 It is a schematic diagram of the connection between the door frame and the locking assembly of the present invention.

[0018] In the figure:

[0019] 100, door frame; 101, door panel; 101a, door frame; 102, outer hand wheel; 103, connecting seat; 104, worm gear reducer;

[0020] 200, transmission assembly; 201, inner hand wheel; 202, chain; 203, stepper motor 1;

[0021] 300, opening and closing assembly; 301, stepping motor 2; 302, helical gear worm gear box; 303, door opening screw;

[0022] 400, locking assembly; 401, limit lock; 402, screw rod; 403, reversing reducer; 404, transverse transmission rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 4 The present invention provides a technical solution: a civil air defense steel structure double-leaf electric protective closed door, comprising

[0025] Door frame 100;

[0026] The door panel 101 is provided with two leaves and is rotatably connected to the rear side of the door frame 100; a door frame 101a is provided inside the door panel 101;

[0027] Also includes

[0028] The transmission assembly 200 is provided with two groups, each group is installed on the inner side surface of a door panel 101;

[0029] The opening and closing components 300 are provided in two groups, each group being installed on the top of a door panel 101;

[0030] The locking assembly 400 is disposed inside the door frame 101a;

[0031] A worm gear reducer 104 is also installed inside the door frame 101a. The worm gear reducer 104 has dual output and input ends, wherein the dual output ends of the worm gear reducer 104 are connected to the locking assembly 400 through a coupling, and one of the input ends of the worm gear reducer 104 is connected to the transmission assembly 200;

[0032] An outer hand wheel 102 is provided on the outer surface of the door panel 101, and the outer hand wheel 102 is connected to the other input end of the worm gear reducer 104. When manual control is required, the control box is adjusted to single-step control, and the door leaf can be controlled by rotating the outer hand wheel 102 for single-step movement. When closing the door manually, the control box is adjusted to manual closing. At this time, the stepper motor is released from the locked state, and the door can be opened, closed and locked.

[0033] In this embodiment, the transmission assembly 200 includes an inner handwheel 201, at the center of which is fixed a columnar body that passes through the door panel 101 and is connected to one of the input ends of the worm gear reducer 104, and a sprocket is also provided on the inner handwheel 201; a stepper motor 203 is also fixed on the inner side surface of the door panel 101, and a chain 202 is connected between the output end of the stepper motor 203 and the sprocket. During use, the chain 202 is driven by the stepper motor 203 to drive the sprocket on the inner handwheel 201, and the inner handwheel 201 is driven. When the inner handwheel 201 rotates, it can drive the worm gear reducer 104 to rotate, thereby driving the locking assembly 400.

[0034] In this embodiment, the locking assembly 400 includes a transverse transmission rod 404 symmetrically installed on the output end of the worm gear reducer 104, and a reversing reducer 403 installed at the end of the transverse transmission rod 404. The reversing reducer 403 has a double output end, and a screw rod 402 is connected to the double output end. The end of the screw rod 402 is threadedly connected to a limit lock head 401 that passes through the door frame 101a. When the worm gear reducer 104 is driven by the inner hand wheel 201, the worm gear reducer 104 will drive the transverse transmission rod 404, and drive the reversing reducer 403 through the transverse transmission rod 404, and the reversing reducer 403 drives the limit lock head 401 to rise and fall through the screw rod 402.

[0035] In this embodiment, a sensor is further provided inside the door frame 100 . The sensor is located outside the end of the limit lock 401 and is used to detect the lifting and lowering of the limit lock 401 to ensure the normal opening and closing of the subsequent door panel 101 .

[0036] In this embodiment, the opening and closing assembly 300 includes a bevel gear worm gear box 302 fixedly mounted on the top of the door panel 101, and a door opening screw 303 penetrating the bevel gear worm gear box 302, and also includes a stepper motor 2 301 installed on the side of the bevel gear worm gear box 302, the output end of the stepper motor 2 301 is connected to the worm gear inside the bevel gear worm gear box 302, and the door opening screw 303 is meshed with the worm gear in the bevel gear worm gear box 302. When the door panel 101 needs to be opened, the stepper motor The second 301 drives the worm gear to rotate, and the worm gear drives the door opening screw 303 to gradually penetrate or gradually withdraw the bevel gear worm gear box 302. A connecting seat 103 is fixed on the top of the door frame 100, and the end of the door opening screw 303 is rotatably installed in the connecting seat 103. When the door opening screw 303 moves in the bevel gear worm gear box 302, since one end of the door opening screw 303 is limited, the door opening screw 303 as a whole can achieve a swinging state, thereby achieving the purpose of opening and closing the door panel 101.

[0037] In this embodiment, the outer hand wheel 102, the inner hand wheel 201, and the dual output ends of the worm gear reducer 104 are on the same straight line.

[0038] In this embodiment, the outer surface of the door panel 101 is against the inner surface of the door frame 100 on all sides, and the contact surfaces of the two are in a flat fit. During the door opening process, the right leaf is opened first and then the left leaf is opened. The door opening signal is sent by the control box, and the door opening button is pressed. Then the stepper motor 203 rotates clockwise, and drives the chain 202, the inner hand wheel 201 and the sprocket to rotate clockwise. At this time, the inner hand wheel 201 drives the worm gear reducer 104 to rotate, and the worm gear reducer 104 drives the reversing reducer 403 through the transverse transmission rod 404, and the reversing reducer 403 drives the lead screw 402 to rotate, and the lead screw 402 retracts the limit lock 401. After the sensor detects that the limit lock 401 is retracted into place, the control system starts the stepper motor 203 on the right door panel 101. After the sensor detects that the opening angle of the right door leaf reaches 10 degrees, the control system sends an opening signal to the left door panel 101, and the stepper motor 20 3 Start and open the door. If the system cannot detect that the door opening angle does not exceed 10 degrees, it will not send a door opening signal to the left leaf. When the door panel 101 opens to about 90-95 degrees, the door panels 101 of the right and left leaves are fully opened. After the sensor detects that the door panels 101 are fully opened, the system stops supplying power and the door opening is completed. The door closing control method is opposite to the door opening method. Now press the door closing button, the control system sends a door closing signal to the left door panel 101, and the right door panel 101 is fully closed first. When the sensor detects that the door panel 101 is fully opened, the system stops supplying power and the door opening is completed. The signal that the right door panel 101 is in place when closing the door is detected, to prevent the two doors from hitting each other due to a closing failure, the system will not send a signal to the left door panel to close the door if the doors are not closed properly. After the right door panel 101 is in place, the system simultaneously rotates the stepper motor 203 on the right door panel 101 counterclockwise to lock the door, and sends a door closing signal to the left door panel 101 to close the door. When the left door panel 101 is closed, the system rotates the stepper motor 203 on the left door panel 101 counterclockwise to lock the door.

[0039] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Civil air defense steel structure double leaf electric protective closed door, including Door frame (100); The door panel (101) is provided with two leaves and is rotatably connected to the rear side of the door frame (100); a door frame (101a) is provided inside the door panel (101); Features: Also includes The transmission assembly (200) is provided with two groups, each group is installed on the inner side surface of a door panel (101); The opening and closing components (300) are provided in two groups, each group being installed on the top of a door panel (101); A locking assembly (400) is arranged inside the door frame (101a); A worm gear reducer (104) is also installed inside the door frame (101a), and the worm gear reducer (104) has dual output and input ends, wherein the dual output ends of the worm gear reducer (104) are connected to the locking assembly (400) via a coupling, and one of the input ends of the worm gear reducer (104) is connected to the transmission assembly (200); An outer hand wheel (102) is provided on the outer surface of the door panel (101), and the outer hand wheel (102) is connected to the other input end of the worm gear reducer (104).

2. The civil air defense steel structure double-leaf electric protective closed door according to claim 1 is characterized by: The transmission assembly (200) comprises an inner hand wheel (201), a columnar body penetrating the door panel (101) and connected to one of the input ends of the worm gear reducer (104) is fixed at the center of the inner hand wheel (201), and a sprocket is also arranged on the inner hand wheel (201); a stepper motor 1 (203) is also fixed on the inner side surface of the door panel (101), and a chain (202) is connected between the output end of the stepper motor 1 (203) and the sprocket.

3. The civil air defense steel structure double-leaf electric protective closed door according to claim 2 is characterized by: The locking assembly (400) comprises a transverse transmission rod (404) symmetrically mounted on the output end of a worm gear reducer (104), and a reversing reducer (403) mounted at the end of the transverse transmission rod (404), wherein the reversing reducer (403) has a double output end, a screw rod (402) being connected to the double output end, and a limit lock head (401) penetrating the door frame (101a) being threadedly connected to the end of the screw rod (402).

4. The civil air defense steel structure double-leaf electric protective closed door according to claim 3 is characterized by: A sensor is also provided inside the door frame (100), and the sensor is located outside the end of the limit lock (401).

5. The civil air defense steel structure double-leaf electric protective closed door according to claim 1 is characterized by: The opening and closing assembly (300) includes a helical gear worm gear box (302) fixedly mounted on the top of the door panel (101), and a door opening screw (303) penetrating the helical gear worm gear box (302), and also includes a second stepper motor (301) mounted on the side of the helical gear worm gear box (302), the output end of the second stepper motor (301) is connected to the worm gear inside the helical gear worm gear box (302), and the door opening screw (303) is meshed with the worm gear inside the helical gear worm gear box (302), and a connecting seat (103) is fixed on the top of the door frame (100), and the end of the door opening screw (303) is rotatably mounted in the connecting seat (103).

6. The civil air defense steel structure double-leaf electric protective closed door according to claim 2 is characterized by: The outer hand wheel (102), the inner hand wheel (201), and the dual output ends of the worm gear reducer (104) are located on the same straight line.

7. The civil air defense steel structure double-leaf electric protective closed door according to claim 1 is characterized by: The outer surface of the door panel (101) is in contact with the inner side surface of the door frame (100) on all sides, and the contact surfaces of the two are in a planar fit.

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