Civil air defense door convenient to open and close for civil air defense engineering

Abstract

The civil air defense door convenient to open and close for the civil air defense engineering comprises a door frame, an opening and closing mechanism for rapidly opening and closing the civil air defense door is arranged between the inner bottom walls of the door frame, and a reinforcing mechanism for improving the inner protection performance of the civil air defense door is arranged in the opening and closing mechanism. The switch mechanism comprises a door shaft, a rotating sleeve, a door body, a rotating piece and two hydraulic cylinders. According to the civil air defense door convenient to open and close for the civil air defense engineering, the opening and closing mechanism is arranged, and through mutual cooperation of a door shaft, a rotating sleeve, a door shaft, a rotating piece, a hydraulic cylinder and the like, a driving motor can be started through a controller when the civil air defense door is opened and closed; the output shaft drives the gear to drive the rotating sleeve and the door body to rotate along the door shaft to change the angle so as to achieve opening and closing of the door body, meanwhile, the hydraulic cylinder is started during gear driving, the opening and closing efficiency of the door body can be improved, the hydraulic cylinder and the motor are driven by different energy sources and can be used as two sets of opening and closing schemes, and normal opening and closing of the civil air defense door are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense projects, in particular to a civil air defense door which is easy to open and close and is used in civil air defense projects. Background Art

[0002] Civil defense doors refer to specially designed doors used in civil defense projects. Their main purpose is to provide protection and safety in specific places. Civil defense projects include air defense, underground projects, chemical defense, earthquake resistance and other aspects, and civil defense doors are an important part of them. They are mainly installed at the entrances and exits of civil defense projects in buildings. They are generally used in disaster prevention and mitigation activities to keep rescue and disaster relief channels unobstructed.

[0003] As disclosed in Chinese patent announcement number (CN216043408U), a civil air defense door that is easy to open and close relates to the field of civil air defense doors, including a door body and a door frame, the door body and the door frame are both vertically arranged, one side of the door body is hinged to the door frame, a sliding block is slidably connected to the door body in the vertical direction, and a locking block is slidably connected to the door body in the horizontal direction, the end of the locking block close to the sliding block is inclined downward and abuts against the bottom end of the sliding block, the end of the locking block away from the sliding block is fixedly connected to a locking rod and a spring, the locking rod passes through the outside of the door body, the spring is horizontally arranged, and the spring is fixedly connected to the door body; the door frame is provided with a lock hole used in conjunction with the locking rod, and the application has the effect of making the opening or closing of the civil air defense door faster and more convenient.

[0004] However, as in the above patent, there is still a problem of poor opening and closing convenience for the civil defense door. For example, in the above patent, the opening and closing movement of the civil defense door is achieved by pushing the slider with the movement of the spring. However, in order to improve the protection effect of the civil defense door and ensure effective isolation performance, various structures are added to the door body to increase the performance of the door body. Therefore, the weight of the civil defense door is relatively large. The above method is not only time-consuming and labor-intensive to open and close the civil defense door, but also leads to a longer opening and closing time of the civil defense door, which is not convenient for achieving the purpose of rapid locking during the prevention process. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a civil air defense door that is easy to open and close for civil air defense projects, which has the advantages of being easy to open and close, and solves the problem of poor opening and closing convenience of civil air defense doors in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a civil air defense door for civil air defense projects that is easy to open and close, comprising a door frame, a quick opening and closing mechanism for the civil air defense door is provided between the inner bottom walls of the door frame, and a reinforcement mechanism for increasing the internal protection performance of the civil air defense door is provided inside the opening and closing mechanism;

[0007] The switch mechanism includes a door shaft, a rotating sleeve, a door body, a rotating part and two hydraulic cylinders. The door shaft is fixed to the inner bottom wall of the door frame, the rotating sleeve is rotatably connected to the outer side of the door shaft through a bearing, the door body is fixed to the outer side of the rotating sleeve, and the rotating part is arranged on the inner top wall of the door frame to drive the door body to move along the door shaft. The two hydraulic cylinders are respectively fixed to the upper and lower sides of the back of the door frame, and the outer sides of the output shafts of the two hydraulic cylinders are hinged to the back of the door body through a hinge frame.

[0008] Furthermore, controllers are fixed on both the front and rear sides of the door frame, and a protective baffle is fixed on the front side of the door frame and in front of the rotating sleeve.

[0009] Furthermore, the rotating part includes a control box, a supporting sleeve, a driven gear, a driving motor, a connecting shaft and a driving gear. The control box is fixed to the inner top wall of the door frame, the supporting sleeve is connected to the top end of the rotating sleeve and is located on the outside of the door shaft, the driven gear is fixed to the outside of the supporting sleeve, the driving motor is fixed to the inner top wall of the control box, one end of the connecting shaft is fixed to the output shaft of the driving motor, and the other end of the connecting shaft is rotatably connected to the inner bottom wall of the control box through a bearing, the driving gear is fixed to the outside of the connecting shaft, and the driving gear is meshingly connected to the driven gear.

[0010] Furthermore, a connecting hole is provided on the inner bottom wall of the control box, and the supporting sleeve is rotatably connected to the inner wall of the connecting hole via a bearing.

[0011] Furthermore, the top end of the door shaft passes through and extends to the inner top wall of the control box, and handles are fixed on the front and rear sides of the door body.

[0012] Furthermore, the reinforcement mechanism includes a flame retardant layer, two anti-collision steel plates and a supporting keel. The flame retardant layer is fixed to the inner wall of the door body, the two anti-collision steel plates are respectively fixed to the front and rear inner walls of the flame retardant layer, and the supporting keel is fixed between the opposite sides of the two anti-collision steel plates.

[0013] Furthermore, the flame retardant layer is a mineral fiber layer, and the length of the anti-collision steel plate is equal to the length of the supporting keel.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The civil air defense door used in the civil air defense project is easy to open and close. By setting a switch mechanism, the door shaft, rotating sleeve, door shaft and rotating parts and hydraulic cylinder cooperate with each other. When the civil air defense door is opened and closed, the driving motor can be started by the controller, and the output shaft drives the gear to drive the rotating sleeve and the door body to rotate along the door shaft to change the angle to realize the opening and closing of the door body. At the same time, the hydraulic cylinder is started together with the gear drive to speed up the opening and closing efficiency of the door body. The hydraulic cylinder and the motor are driven by different energy sources and can be used as two sets of switch solutions to ensure the normal opening and closing of the civil air defense door.

[0016] 2. The civil air defense door used in the civil air defense project is easy to open and close. By setting up a reinforcement mechanism, a flame retardant layer can be set on the inner wall of the door body through the cooperation between the flame retardant layer, anti-collision steel plate and supporting keel, which helps to slow down the spread of fire and protect the stability of the door in fire or other emergency situations. At the same time, the anti-collision steel plate and the supporting keel are arranged in the door body to increase the overall stiffness of the civil air defense door, avoid impact deformation that affects the opening and closing of the door body, and achieve the effect of reinforcing the door body and improving its protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the switch mechanism of the utility model;

[0019] Figure 3 This is a top view of the switch mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the reinforcement mechanism of the utility model.

[0021] In the figure: 1 door frame, 2 switch mechanism, 21 door shaft, 22 rotating sleeve, 23 door body, 24 rotating member, 241 control box, 242 supporting sleeve, 243 driven gear, 244 driving motor, 245 connecting shaft, 246 driving gear, 25 hydraulic cylinder, 3 reinforcement mechanism, 31 flame retardant layer, 32 anti-collision steel plate, 33 supporting keel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1In this embodiment, a civil air defense door that is easy to open and close for civil air defense projects includes a door frame 1. A quick opening and closing mechanism 2 is provided between the inner bottom walls of the door frame 1. A reinforcement mechanism 3 is provided inside the opening and closing mechanism 2 to increase the protective performance of the civil air defense door.

[0024] In this embodiment, controllers are fixed to both the front and rear sides of the door frame 1 , and a protective baffle is fixed to the front of the door frame 1 and in front of the rotating sleeve 22 .

[0025] See also Figure 2-3 In order to improve the switching efficiency of the civil air defense door, the switch mechanism 2 in this embodiment includes a door shaft 21, a rotating sleeve 22, a door body 23, a rotating member 24 and two hydraulic cylinders 25. The door shaft 21 is fixed between the inner bottom wall of the door frame 1, the rotating sleeve 22 is rotatably connected to the outer side of the door shaft 21 through a bearing, the door body 23 is fixed to the outer side of the rotating sleeve 22, and the rotating member 24 is arranged on the inner top wall of the door frame 1 to drive the door body 23 to move along the door shaft 21. The two hydraulic cylinders 25 are respectively fixed to the upper and lower sides of the back side of the door frame 1, and the outer sides of the output shafts of the two hydraulic cylinders 25 are hinged to the back side of the door body 23 through a hinge frame, and the rotating sleeve 22 and the door body 23 are driven by the support sleeve 242 to rotate along the door shaft 21 to change the angle to realize the opening and closing of the door body 23.

[0026] The rotating member 24 includes a control box 241, a supporting sleeve 242, a driven gear 243, a driving motor 244, a connecting shaft 245 and a driving gear 246. The control box 241 is fixed to the inner top wall of the door frame 1, the supporting sleeve 242 is connected to the top of the rotating sleeve 22 and is located on the outside of the door shaft 21, the driven gear 243 is fixed to the outside of the supporting sleeve 242, the driving motor 244 is fixed to the inner top wall of the control box 241, one end of the connecting shaft 245 is fixed to the output shaft of the driving motor 244, and the other end of the connecting shaft 245 is rotatably connected to the inner bottom wall of the control box 241 through a bearing, the driving gear 246 is fixed to the outside of the connecting shaft 245, and when the civil defense door is opened or closed, the driving motor 244 is started by the controller, and the connecting shaft 245 is driven by the output shaft to drive the driving gear 246 to drive the driven gear 243 meshing with it to rotate together, and the driving gear 246 is meshed and connected with the driven gear 243.

[0027] In this embodiment, a connecting hole is opened on the inner bottom wall of the control box 241, and the supporting sleeve 242 is rotatably connected to the inner wall of the connecting hole through a bearing. When the gear is driven, the hydraulic cylinder 25 is started together, and the extension rate of the output shaft of the hydraulic cylinder 25 is controlled by the controller to match the gear speed, which can speed up the opening and closing efficiency of the door body 23. The top of the door shaft 21 passes through and extends to the inner top wall of the control box 241. Handles are fixed on the front and back sides of the door body 23. The hydraulic cylinder 25 and the motor are driven by different energy sources and can be used as two sets of switching solutions to ensure the normal opening and closing of the civil air defense door, and the protective partition can block and protect the gap at the connection between the rotating sleeve 22 and the door shaft 21 to avoid the formation of a protective gap.

[0028] See also Figure 4 In order to reinforce the protective performance of the civil air defense door, the reinforcement mechanism 3 in this embodiment includes a flame retardant layer 31, two anti-collision steel plates 32 and a supporting keel 33. The flame retardant layer 31 is fixed to the inner wall of the door body 23, and the two anti-collision steel plates 32 are respectively fixed to the front and rear inner walls of the flame retardant layer 31. The supporting keel 33 is fixed between the opposite sides of the two anti-collision steel plates 32. The anti-collision steel plates 32 cooperate with the supporting keel 33 to be arranged in the door body 23 to increase the overall stiffness of the civil air defense door, avoid the impact deformation that affects the opening and closing of the door body 23, and achieve the effect of reinforcing the door body 23 and improving the protective performance.

[0029] In this embodiment, the flame retardant layer 31 is a mineral fiber layer. The flame retardant layer 31 is arranged on the inner wall of the door body 23 to help slow down the spread of fire and protect the stability of the door in fire or other emergency situations. The length of the anti-collision steel plate 32 is equal to the length of the supporting keel 33.

[0030] The working principle of the above embodiment is:

[0031] (1) When the civil air defense door is used to improve the opening and closing efficiency, the driving motor 244 is started through the controller when the civil air defense door is opened and closed, and the connecting shaft 245 is driven by the output shaft to drive the driving gear 246 to drive the driven gear 243 meshing with it to rotate together, and then the rotating sleeve 22 and the door body 23 are driven by the supporting sleeve 242 to rotate along the door shaft 21 to change the angle to realize the opening and closing of the door body 23. At the same time, the hydraulic cylinder 25 is started when the gear is driven, and the controller controls the extension rate of the output shaft of the hydraulic cylinder 25 to match the gear speed, which can speed up the opening and closing efficiency of the door body 23. The hydraulic cylinder 25 and the motor are driven by different energy sources and can be used as two sets of switching solutions to ensure the normal opening and closing of the civil air defense door, and the protective partition can block the gap at the connection between the rotating sleeve 22 and the door shaft 21 to avoid the occurrence of a protective gap.

[0032] (2) When the civil air defense door is used to strengthen its protective performance, a flame retardant layer 31 is set on the inner wall of the door body 23 to help slow down the spread of fire and protect the stability of the door in fire or other emergency situations. At the same time, the anti-collision steel plate 32 and the supporting keel 33 are set in the door body 23 to increase the overall stiffness of the civil air defense door, avoid impact deformation that affects the opening and closing of the door body 23, and achieve the purpose of strengthening the door body 23 and improving its protective performance.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A civil air defense door for civil air defense projects that is easy to open and close, comprising a door frame (1), characterized in that: A quick opening and closing mechanism (2) for the civil air defense door is provided between the inner bottom walls of the door frame (1), and a reinforcement mechanism (3) for increasing the internal protective performance of the civil air defense door is provided inside the opening and closing mechanism (2); The switch mechanism (2) comprises a door shaft (21), a rotating sleeve (22), a door body (23), a rotating member (24) and two hydraulic cylinders (25); the door shaft (21) is fixed between the inner bottom wall of the door frame (1); the rotating sleeve (22) is rotatably connected to the outer side of the door shaft (21) through a bearing; the door body (23) is fixed to the outer side of the rotating sleeve (22); the rotating member (24) is arranged on the inner top wall of the door frame (1) to drive the door body (23) to move along the door shaft (21); the two hydraulic cylinders (25) are respectively fixed to the upper and lower sides of the back side of the door frame (1); and the outer sides of the output shafts of the two hydraulic cylinders (25) are hinged to the back side of the door body (23) through a hinge frame.

2. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 1 is characterized in that: Controllers are fixed on both the front and rear sides of the door frame (1), and a protective partition is fixed on the front of the door frame (1) and in front of the rotating sleeve (22).

3. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 1 is characterized by: The rotating member (24) comprises a control box (241), a supporting sleeve (242), a driven gear (243), a driving motor (244), a connecting shaft (245) and a driving gear (246); the control box (241) is fixed to the inner top wall of the door frame (1); the supporting sleeve (242) is connected to the top end of the rotating sleeve (22) and is located on the outer side of the door shaft (21); the driven gear (243) is fixed to the outer side of the supporting sleeve (242); the driving motor (244) is fixed to the inner top wall of the control box (241); one end of the connecting shaft (245) is fixed to the output shaft of the driving motor (244); the other end of the connecting shaft (245) is rotatably connected to the inner bottom wall of the control box (241) through a bearing; the driving gear (246) is fixed to the outer side of the connecting shaft (245); and the driving gear (246) is meshingly connected to the driven gear (243).

4. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 3 is characterized by: The inner bottom wall of the control box (241) is provided with a connection hole, and the support sleeve (242) is rotatably connected to the inner wall of the connection hole via a bearing.

5. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 3 is characterized by: The top end of the door shaft (21) passes through and extends to the inner top wall of the control box (241), and handles are fixed on both the front and rear sides of the door body (23).

6. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 1, characterized in that: The reinforcement mechanism (3) comprises a flame retardant layer (31), two anti-collision steel plates (32) and a supporting keel (33); the flame retardant layer (31) is fixed to the inner wall of the door body (23); the two anti-collision steel plates (32) are respectively fixed to the front and rear inner walls of the flame retardant layer (31); and the supporting keel (33) is fixed between the opposite sides of the two anti-collision steel plates (32).

7. The civil air defense door that is easy to open and close for civil air defense engineering according to claim 6, characterized in that: The flame retardant layer (31) is a mineral fiber layer, and the length of the anti-collision steel plate (32) is equal to the length of the supporting keel (33).

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