Civil air defense door with double positioning structures

Abstract

The utility model discloses a civil air defense door with a double positioning structure. The civil air defense door comprises a synchronous driving device, a guide groove seat, a clamping hole, a guide groove, a screw rod, a movable seat, a fixed cover, a first connecting shaft, a supporting arm, a second connecting shaft, a connecting rod, a support, a top groove and a fixed block. The device is reasonable and simple in structure, low in production cost and convenient to install, the movable seat can be driven to drive the upper side of the supporting arm to move downwards through rotation of the hand wheel, then the lower side of the supporting arm is opened outwards to support the top groove under the action of the connecting rod, and therefore using convenience is improved; the number of the supporting arms is two, so that the two sides of the civil air defense door body can be supported and jacked at the same time, and the anti-collision performance of the civil air defense door body is improved; the synchronous driving device arranged in the civil air defense door can drive the two supporting arms to open together to support the top groove at the same time, so that the efficiency of secondary positioning is improved, in addition, the supporting arms can be rapidly folded in cooperation with the connecting rods, and opening of the civil air defense door body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a civil air defense door with a double positioning structure. Background Art

[0002] A civil air defense door refers to the door at the entrance of a people's air defense project. The classification of civil air defense doors is relatively distinct, including various civil air defense equipment such as ordinary single and double leaf airtight blast doors and airtight doors, and live threshold single and double leaf airtight blast doors and airtight doors. With the progress of modern technology, civil air defense doors have gradually produced rubber tube type blast wave valves, pendulum type blast wave (shield) valves, pendulum type blast wave (shield) valves, ramp inward opening double leaf airtight blast doors, etc. Civil air defense doors are generally made of hard steel materials, which have a certain effect of preventing shock waves and effectively ensuring the safety and stability inside the civil air defense space. Most of the current civil air defense doors only use a mechanical lock or the engagement of a lock pin and a lock pin groove for locking, with only this single positioning structure, which is relatively simple and cannot perform a second positioning on the civil air defense door other than this positioning, resulting in relatively poor anti impact performance of the overall civil air defense door, and ultimately relatively poor safety performance. For example, the Chinese utility model patent with the patent number CN 220226643 U discloses a civil air defense door with a double positioning structure, but the second positioning of this civil air defense door is relatively troublesome and inconvenient to use, and the anti impact performance is also relatively poor. Summary of the Invention

[0003] The purpose of the utility model is to provide a civil air defense door with a double positioning structure to solve the problems that the second positioning of the existing civil air defense doors is relatively troublesome and inconvenient to use, and the anti impact performance is also relatively poor.

[0004] To solve the above problems, the present utility model provides a technical solution: a civil air defense door with a dual positioning structure, including a civil air defense door body, and further including a synchronous drive device, a guide groove seat, a card hole, a guide groove, a screw rod, a movable seat, a fixed cover, a connecting shaft one, a support arm, a connecting shaft two, a connecting rod, a support, a top groove and a fixed block; there are two guide groove seats, and the two guide groove seats are respectively fixedly connected to both sides inside the civil air defense door body. Vertical guide grooves are provided inside both of the two guide groove seats, and fixed covers are fixedly connected to the openings at the upper sides of the guide grooves; there are two screw rods, and the two screw rods are respectively movably connected inside the corresponding guide grooves. Card holes are provided at the centers of the lower sides of the two screw rods; there are two movable seats, and the outer parts of the two movable seats are respectively movably connected inside the corresponding guide grooves. The threaded holes provided in the centers of the two movable seats are respectively connected to the corresponding screw rods. Connecting shafts one are fixedly connected to the inner sides of the outer parts of the two movable seats; the synchronous drive device is fixedly connected to the inner surface of the civil air defense door body, and the output shafts on both sides above the synchronous drive device are respectively connected to the corresponding card holes; there are two fixed blocks, and the two fixed blocks are respectively fixedly connected to both sides of the ground inside the civil air defense door body. Top grooves are provided at the centers of the upper sides of the two fixed blocks; there are two support arms, and the upper inner parts of the two support arms are respectively movably connected to the corresponding connecting shafts one. Connecting shafts two are fixedly connected to the centers of the two support arms, and the lower ends of the two support arms are respectively connected to the corresponding top grooves; there are two supports, and the two supports are respectively located directly below the corresponding guide groove seats. The two supports are respectively fixedly connected to both sides of the lower inner side of the civil air defense door body; there are two connecting rods, and one sides of the two connecting rods are respectively hinged to the outer sides of the corresponding supports. The other sides of the two connecting rods are respectively movably connected to the outer parts of the corresponding connecting shafts two.

[0005] Preferably, the specific structure of the synchronous drive device includes a housing, a transmission shaft, a first transmission gear, a second transmission gear, an output shaft, a handwheel, a driving gear and a driven gear; the transmission shaft is movably connected to the center inside the housing. First transmission gears are fixedly connected to the outer parts on both the left and right sides of the transmission shaft, and a driven gear is fixedly connected to the outer part of the center of the transmission shaft; there are two output shafts, and the two output shafts are respectively movably connected to the upper sides inside the left and right sides of the housing. Second transmission gears are fixedly connected to the outer parts of the lower sides of the two output shafts, and the second transmission gears are respectively connected to the corresponding first transmission gears; the driving gear is movably connected to the center inside the housing, the driving gear is connected to the driven gear, and a handwheel is fixedly connected to the central axis on the outer side of the driving gear.

[0006] Preferably, the outer part of the upper side of the output shaft is hexagonal and matches the inside of the card hole.

[0007] Preferably, the guide groove is a T-shaped guide groove and matches the outer part of the movable seat.

[0008] Advantages of the utility model: (1) The utility model has a reasonable and simple structure, low production cost, convenient installation and complete functions. By rotating the handwheel, the movable seat can be driven to drive the upper side of the support arm to move downwards, and then under the action of the connecting rod, the lower side of the support arm will open outwards to support the top groove, thus improving the convenience during use.

[0009] (2) There are two support arms in the utility model, which can support and tighten both sides of the civil air defense door body at the same time, thus improving the anti-impact performance of the civil air defense door body.

[0010] (3) The synchronous drive device set in the utility model can drive the two support arms to open and support the top groove at the same time, thus improving the efficiency of the second positioning. In addition, it can also cooperate with the connecting rod to quickly retract the support arms, thus facilitating the opening of the civil air defense door body. Brief description of the drawings

[0011] Figure 1 It is a schematic structural diagram of the utility model.

[0012] Figure 2 It is a schematic structural diagram of the synchronous drive device.

[0013] 1 - Civil air defense door body; 2 - Synchronous drive device; 3 - Guide groove seat; 4 - Card hole; 5 - Guide groove; 6 - Screw; 7 - Movable seat; 8 - Fixed cover; 9 - Connecting shaft one; 10 - Support arm; 11 - Connecting shaft two; 12 - Connecting rod; 13 - Support; 14 - Top groove; 15 - Fixed block; 21 - Outer shell; 22 - Transmission shaft; 23 - Transmission gear one; 24 - Transmission gear two; 25 - Output shaft; 26 - Handwheel; 27 - Driving gear; 28 - Driven gear. Detailed implementation manners

[0014] As Figure 1As shown in the figure, the present specific implementation adopts the following technical solution: a civil air defense door with a dual positioning structure, including a civil air defense door body 1, and further including a synchronous driving device 2, a guide groove seat 3, a card hole 4, a guide groove 5, a screw rod 6, a movable seat 7, a fixed cover 8, a connecting shaft one 9, a support arm 10, a connecting shaft two 11, a connecting rod 12, a support 13, a top groove 14 and a fixed block 15; there are two guide groove seats 3, and the two guide groove seats 3 are respectively fixedly connected to both sides inside the civil air defense door body 1. Vertical guide grooves 5 are provided inside both of the two guide groove seats 3, and fixed covers 8 are fixedly connected to the upper openings of the guide grooves 5; there are two screw rods 6, and the two screw rods 6 are respectively movably connected inside the corresponding guide grooves 5. Card holes 4 are provided at the centers of the lower sides of the two screw rods 6; there are two movable seats 7, and the outer parts of the two movable seats 7 are respectively movably connected inside the corresponding guide grooves 5. The threaded holes provided at the centers of the two movable seats 7 are respectively connected to the corresponding screw rods 6. Connecting shafts one 9 are fixedly connected to the inside of the outer sides of the two movable seats 7; the synchronous driving device 2 is fixedly connected to the inner side surface of the civil air defense door body 1, and the output shafts on both sides of the upper surface of the synchronous driving device 2 are respectively connected to the corresponding card holes 4; there are two fixed blocks 15, and the two fixed blocks 15 are respectively fixedly connected to both sides of the inner side ground of the civil air defense door body 1. Top grooves 14 are provided at the centers of the upper sides of the two fixed blocks 15; there are two support arms 10, and the inner parts of the upper sides of the two support arms 10 are respectively movably connected to the corresponding connecting shafts one 9. Connecting shafts two 11 are fixedly connected to the centers of the two support arms 10, and the lower ends of the two support arms 10 are respectively connected to the corresponding top grooves 14; there are two supports 13, and the two supports 13 are respectively located directly below the corresponding guide groove seats 3. The two supports 13 are respectively fixedly connected to both sides of the inner lower side of the civil air defense door body 1; there are two connecting rods 12, and one sides of the two connecting rods 12 are respectively hinged to the outer sides of the corresponding supports 13. The inner parts of the other sides of the two connecting rods 12 are respectively movably connected to the outside of the corresponding connecting shafts two 11.

[0015] As Figure 2As shown in the figure, the specific structure of the synchronous drive device 2 includes a housing 21, a transmission shaft 22, a first transmission gear 23, a second transmission gear 24, an output shaft 25, a handwheel 26, a driving gear 27 and a driven gear 28; the transmission shaft 22 is movably connected to the central interior of the housing 21, and both the left and right outer sides of the transmission shaft 22 are fixedly connected with the first transmission gear 23, and the central outer side of the transmission shaft 22 is fixedly connected with the driven gear 28; there are two output shafts 25, and the two output shafts 25 are respectively movably connected to the upper left and right interiors of the housing 21, and the lower outer sides of the two output shafts 25 are fixedly connected with the second transmission gear 24, and the second transmission gear 24 is respectively connected with the corresponding first transmission gear 23; the driving gear 27 is movably connected to the central interior of the housing 21, the driving gear 27 is connected with the driven gear 28, and a handwheel 26 is fixedly connected to the central axis on the outer side of the driving gear 27.

[0016] Wherein, the upper outer side of the output shaft 25 is hexagonal and matches the inside of the card hole 4, so as to facilitate the output shaft 25 to drive the screw 6 to rotate; the guide groove 5 is a T-shaped guide groove and matches the outside of the movable seat 7.

[0017] The use state of the present utility model is as follows: The present utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. When in use, first close the civil air defense door body 1, and then manually rotate the handwheel 26. The rotation of the handwheel 26 drives the transmission shaft 22 to rotate through the driving gear 27 and the driven gear 28. The rotation of the transmission shaft 22 makes the first transmission gear 23 drive the second transmission gear 24 and the output shaft 25 to rotate. The rotation of the output shaft 25 drives the screw 6 to rotate. The rotation of the screw 6 makes the movable seat 7 drive the upper side of the support arm 10 to move downward. Then, under the action of the connecting rod 12, the lower side of the support arm 10 will open outward to support the top groove 14, thus improving the convenience during use. In addition, there are two support arms 10 here, so that the two sides of the civil air defense door body 1 can be supported and tightened simultaneously, thereby improving the anti-impact performance of the civil air defense door body 1. In addition, the provided synchronous drive device 2 can drive the two support arms 10 to open and support the top groove 14 simultaneously, thus improving the efficiency of the second positioning. In addition, it can also cooperate with the connecting rod 12 to quickly retract the support arms 10, thus facilitating the opening of the civil air defense door body 1.

[0018] The control mode of the present utility model is controlled manually or by existing automation technologies. The wiring diagram of the power element and the power supply are common knowledge in the field. And the present utility model is mainly used to protect mechanical devices, so the control mode and wiring layout of the present utility model will not be explained in detail.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0020] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A civil air defense door with a dual positioning structure, comprising a civil air defense door body (1), characterized in that: It also includes a synchronous drive device (2), a guide groove seat (3), a clamping hole (4), a guide groove (5), a screw rod (6), a movable seat (7), a fixed cover (8), a connecting shaft (9), a support arm (10), a connecting shaft (11), a connecting rod (12), a support seat (13), a top groove (14) and a fixed block (15); There are two guide groove seats (3), and the two guide groove seats (3) are respectively fixedly connected to the two sides of the inner side of the civil air defense door body (1); the two guide groove seats (3) are each provided with a vertical guide groove (5) inside, and a fixed cover (8) is fixedly connected to the upper opening of the guide groove (5); There are two screw rods (6), and the two screw rods (6) are movably connected to the inside of the corresponding guide groove (5), and a clamping hole (4) is opened at the center of the lower side of the two screw rods (6); There are two movable seats (7), the outsides of the two movable seats (7) are movably connected to the insides of the corresponding guide grooves (5), the threaded holes arranged in the centers of the two movable seats (7) are connected to the corresponding screw rods (6), and the outsides of the two movable seats (7) are fixedly connected to the insides of the two movable seats (7); The synchronous drive device (2) is fixedly connected to the inner side of the civil air defense door body (1), and the output shafts on both sides of the synchronous drive device (2) are respectively connected to the corresponding clamping holes (4); There are two fixing blocks (15), and the two fixing blocks (15) are respectively fixedly connected to the two sides of the ground inside the civil air defense door body (1), and a top groove (14) is provided in the center of the upper side of the two fixing blocks (15); There are two support arms (10), the upper inner sides of the two support arms (10) are movably connected to the corresponding connecting shaft 1 (9), the centers of the two support arms (10) are fixedly connected to the connecting shaft 2 (11), and the lower ends of the two support arms (10) are connected to the corresponding top grooves (14); There are two supports (13), the two supports (13) are respectively located directly below the corresponding guide slot seats (3), and the two supports (13) are respectively fixedly connected to two sides of the lower inner side of the civil air defense door body (1); There are two connecting rods (12), one side of the two connecting rods (12) is respectively hinged to the outer side of the corresponding support (13), and the other side of the two connecting rods (12) is respectively movably connected to the outer side of the corresponding second connecting shaft (11).

2. The civil air defense door with a dual positioning structure according to claim 1 is characterized in that: The specific structure of the synchronous drive device (2) includes an outer shell (21), a transmission shaft (22), a transmission gear 1 (23), a transmission gear 2 (24), an output shaft (25), a hand wheel (26), a driving gear (27) and a driven gear (28); The transmission shaft (22) is movably connected to the central interior of the outer shell (21), the exteriors of the left and right sides of the transmission shaft (22) are fixedly connected to transmission gears 1 (23), and the central exterior of the transmission shaft (22) is fixedly connected to a driven gear (28); There are two output shafts (25), and the two output shafts (25) are movably connected to the inside of the left and right upper sides of the outer shell (21), and the lower sides of the two output shafts (25) are fixedly connected to the second transmission gear (24), and the second transmission gear (24) is respectively connected to the corresponding first transmission gear (23); The driving gear (27) is movably connected to the central interior of the outer shell (21), the driving gear (27) is connected to the driven gear (28), and a hand wheel (26) is fixedly connected to the central axis outside the driving gear (27).

3. The civil defense door with a dual positioning structure according to claim 2 is characterized in that: The outer portion of the upper side of the output shaft (25) is hexagonal in shape and matches the inner portion of the clamping hole (4).

4. The civil air defense door with a dual positioning structure according to claim 1 is characterized in that: The guide groove (5) is a T-shaped guide groove and matches the exterior of the movable seat (7).

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