A civil air defense door that can assist in opening and closing doors

Abstract

The present invention relates to the technical field of civil air defense doors, and more specifically, to a civil air defense door that can assist in opening and closing the door, comprising a door body and a locking mechanism, wherein the locking mechanism is installed on one side of the door body, and the locking mechanism comprises a first rotating shaft and a second rotating shaft that are rotatably connected to the door body, a control mechanism is arranged on the other side of the door body, and a reset mechanism is arranged between the door body and the wall. The cam is rotated by rotating the first hand wheel or the second hand wheel, and the protruding end of the cam pushes the sliding tooth plate to slide and completely separate from the first gear, and then abuts against the control switch, so that the two-way winch reels the wire rope, which can pull the door body to rotate, and realize the opening of the civil air defense door, and the door body can be opened without a strong push, and the sliding tooth plate can be separated from the control switch by controlling the first hand wheel or the second hand wheel, so that the sliding tooth plate is meshed with the first gear again, and the two-way winch is locked so that it cannot rotate, so that the door body remains in an open state, so that people can pass quickly.

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense doors, and specifically relates to a civil air defense door that can assist in opening and closing the door. Background Art

[0002] A civil air defense door refers to a building door and window with a protection function, generally used for protection during disasters such as shelters. It is a door used for protecting, controlling, and evacuating people in a building. Its function is not only to serve as a door, but also an important barrier between the inside and outside of the building, which can effectively protect the building and the people inside. It has many functions, generally having functions such as fire prevention, anti-theft, sound insulation, impact resistance, and isolation.

[0003] The civil air defense door is relatively thick and generally heavy in weight. After the locking device of some civil air defense doors is opened, it is necessary to push the door body to rotate to open the civil air defense door. Due to the heavy weight of the door body itself, it is relatively difficult for some people with less strength or inconvenient physical conditions to push the door body to rotate. In case of an emergency, it is necessary to keep the civil air defense door open to ensure that people can pass quickly. The difficult-to-push door body will directly result in too small an opening angle of the door body, which cannot meet the simultaneous passage of multiple people. When there are a large number of people taking shelter and they crowd into the civil air defense door, congestion and other accidents may occur, resulting in the shelter seekers not being able to quickly enter the safe area for shelter. And after entering the safe area, it is also necessary to rotate the door body to close the civil air defense door. If the door body cannot be closed in time, it may cause harm to the shelter seekers and cause serious consequences.

[0004] Therefore, the present invention provides a civil air defense door that can assist in opening and closing the door. Summary of the Invention

[0005] Aiming at the problem that the civil air defense door in the prior art is too heavy for people to push, the present invention provides a civil air defense door that can assist in opening and closing the door.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a civil air defense door that can assist in opening and closing the door, including a door body and a locking mechanism. The door body is hinged to a wall. The locking mechanism is installed on one side of the door body. The locking mechanism includes a first rotating shaft and a second rotating shaft that are rotatably connected to the door body. A synchronous belt is connected between the first rotating shaft and the second rotating shaft. A spiral tooth is provided on the outer wall of one end of the first rotating shaft. A control mechanism is provided on the other side of the door body. The control mechanism includes a box body fixedly connected to the door body. A two-way winch is fixedly installed at the bottom of the inner wall of the box body. A reset mechanism is provided between the door body and the wall.

[0007] A steel wire rope is arranged such that one end is fixedly connected to the top of the wall and the other end is fixedly connected to a two-way hoist. A pulley fixedly connected to the side wall of the top of the door body is used to cooperate with a control mechanism to pull the door body to rotate when opening the civil air defense door, and to cooperate with the control mechanism and a reset mechanism to reset and close the door body when closing the civil air defense door;

[0008] A sliding tooth plate is arranged to be slidably connected to the top of a connecting frame fixedly connected to the bottom of the inner wall of the box body, and is used to make the sliding tooth plate approach the inner side wall of the box body under the rotation of the first rotating shaft, so as to abut against a control switch on the inner side wall of the box body to control the winding of the two-way hoist;

[0009] A second movable tooth plate is slidably installed on the inner side wall of the box body far from the door body. By rotating the second rotating shaft, a non-complete gear fixedly connected to the second rotating shaft is driven to rotate, so that the non-complete gear drives the second movable tooth plate to move, so as to abut against the control switch to make the two-way hoist rotate in the reverse direction and control the unwinding of the two-way hoist;

[0010] A second spring is fixedly arranged on one side of the top of the door body. When the door body is opened, a second gear fixedly connected to one end of a connecting rod assembly is driven to rotate through the connecting rod assembly rotatably connected to the wall and the door body, so that a connecting tooth plate engaged with the second gear moves, so that the second spring is compressed. After the two-way hoist unwinds, the second spring resets to drive the door body to close.

[0011] Preferably, synchronous wheels are respectively fixedly installed at one ends of the first rotating shaft and the second rotating shaft. A first hand wheel is fixedly installed at one end of the first rotating shaft close to the synchronous wheel. A second hand wheel is fixedly installed at one end of the second rotating shaft far from the transmission tooth. The synchronous wheels are matched with a synchronous belt. The synchronous wheel on the second rotating shaft is arranged to be lengthened, and a transmission tooth is fixedly arranged on the outside thereof. The transmission tooth is respectively engaged with two first movable tooth plates on both sides. One ends of the two first movable tooth plates close to the top and the bottom of the door body are respectively fixedly connected with movable rods. A group of guide blocks and a group of connecting blocks are fixedly installed on one side of the door body.

[0012] Preferably, the guide block is slidably connected to the first movable tooth plate, and the connecting block is slidably connected to the movable rod and the movable rod can penetrate through the connecting block.

[0013] Preferably, clamping grooves are respectively formed at the top and the bottom of the door frame, and the movable rod is matched with the clamping groove.

[0014] Preferably, the end of the bidirectional winch drive shaft close to the first rotating shaft is fixedly connected to a first gear, the first gear cooperates with the sliding tooth plate, the bottom of the inner wall of the box body is rotatably connected to a third rotating shaft, the third rotating shaft is fixedly connected to a worm gear, the worm gear meshes with the helical teeth on the first rotating shaft, the top of the third rotating shaft is fixedly connected to a cam, and a group of first springs are fixedly connected between the side wall of the bidirectional winch and the sliding tooth plate.

[0015] Preferably, the sliding tooth plate is slidably connected to the first gear, the first rotating shaft rotates and penetrates the connecting frame, and the cam cooperates with the sliding tooth plate.

[0016] Preferably, the reset mechanism includes a cover shell fixedly connected to the top side wall of the door body, one end of the second spring is fixedly connected to the inner wall of the cover shell, the end of the connecting rod assembly close to the door body is fixedly connected to a fourth rotating shaft, the fourth rotating shaft rotates through the cover shell and is rotationally connected to the bottom of the inner wall of the cover shell, the second gear is fixedly connected to the fourth rotating shaft, movable plates are respectively provided on both sides of the second gear, the connecting tooth plates are respectively fixedly connected to the two movable plates, and the movable plates are slidably connected to the cover shell.

[0017] Preferably, the connecting rod assembly consists of two connecting rods, which are rotatably connected, and one end of the connecting rod assembly is rotatably connected to the top wall of the door frame. After the two-way winch winds up the wire rope, the pulling force of the wire rope on the door body is greater than the elastic force of the second spring.

[0018] Preferably, the control switch is arranged on a side of the inner wall of the box body close to the sliding tooth plate, and two control switches are arranged, and the sliding tooth plate and the second movable tooth plate correspond to one of them respectively.

[0019] Preferably, a side of the first gear close to the control switch and a side of the sliding tooth plate away from the control switch are chamfered respectively.

[0020] Beneficial effects of the present invention:

[0021] (1) The civil air defense door capable of assisting in opening and closing the door described in the present invention, when the civil air defense door is in a closed state, the cam is driven by the third rotating shaft to rotate by turning the first hand wheel or the second hand wheel, and the protruding end of the cam pushes the sliding tooth plate to slide and completely separate from the first gear, and then contacts the control switch, so that the two-way winch reels in the steel wire rope, which can pull the door body to rotate, thereby realizing the opening of the civil air defense door. The door body can be opened without a strong push, and can assist the user to quickly open the door. Moreover, the sliding tooth plate can be separated from the control switch by controlling the first hand wheel or the second hand wheel, so that the sliding tooth plate is meshed with the first gear again, and the two-way winch is locked so that it cannot rotate, thereby keeping the door body in an open state to facilitate the rapid passage of people.

[0022] (2) For the civil air defense door capable of assisting in opening and closing the door according to the present invention, when closing the civil air defense door, rotate the second handwheel or the first handwheel so that the second movable tooth plate abuts against another control switch. At this time, the sliding tooth plate is not in contact with the control switch and the first gear, causing the bidirectional winch to rotate in the reverse direction to unwind the steel wire rope, and the stretched second spring is reset, pulling the door body to rotate towards the door frame. Both the opening and closing of the civil air defense door are assisted by an external force to pull the door body, which can help the user quickly open and close the door without having to push hard, improving the passage efficiency. Brief Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Figure 1 Schematic diagram of the overall structure provided by the present invention;

[0025] Figure 2 Schematic diagram of the connection between the door body and the locking mechanism provided by the present invention;

[0026] Figure 3 Schematic diagram of the locking mechanism provided by the present invention;

[0027] Figure 4 Schematic diagram of the connection between the control mechanism and the reset mechanism provided by the present invention;

[0028] Figure 5 For Figure 4 Enlarged view of part A;

[0029] Figure 6 Schematic diagram of the connection between the first gear and the sliding tooth plate provided by the present invention;

[0030] Figure 7 Schematic diagram of the connection between the second movable tooth plate and the control switch provided by the present invention;

[0031] Figure 8 Schematic diagram of the reset mechanism provided by the present invention.

[0032] In the figure: 1. Door body; 2. Locking mechanism; 21. First rotating shaft; 22. Second rotating shaft; 23. First handwheel; 24. Synchronous belt; 25. Synchronous pulley; 251. Driving tooth; 26. First movable tooth plate; 27. Movable rod; 28. Guide block; 29. Connecting block; 3. Control mechanism; 31. Box body; 32. Control switch; 33. First gear; 34. Steel wire rope; 35. Pulley; 36. Two-way hoist; 37. Connecting frame; 38. Third rotating shaft; 39. Worm gear; 310. Cam; 311. Sliding tooth plate; 312. First spring; 4. Reset mechanism; 41. Second movable tooth plate; 42. Incomplete gear; 43. Second handwheel; 44. Link assembly; 45. Housing; 46. Fourth rotating shaft; 47. Second spring; 48. Movable plate; 49. Second gear; 410. Connecting tooth plate; 5. Wall body. Detailed implementation manners

[0033] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0034] Embodiment: As Figures 1 - 8As shown in the figure, a civil air defense door capable of assisting in opening and closing the door according to the present invention includes a door body 1 and a locking mechanism 2. The door body 1 is hinged to a wall body 5, and the locking mechanism 2 is installed on one side of the door body 1. The locking mechanism 2 includes a first rotating shaft 21 and a second rotating shaft 22 rotatably connected to the door body 1. A synchronous belt 24 is connected between the first rotating shaft 21 and the second rotating shaft 22. A spiral tooth is provided on the outer wall of one end of the first rotating shaft 21. A control mechanism 3 is provided on the other side of the door body 1. The control mechanism 3 includes a box body 31 fixedly connected to the door body 1. A bidirectional winch 36 is fixedly installed at the bottom of the inner wall of the box body 31. A reset mechanism 4 is provided between the door body 1 and the wall body 5; a steel wire rope 34, which is set to be fixedly connected to the top wall body 5 at the position far from the hinge of the door body 1 and the wall body 5 when the door body 1 is in a fully open state at one end, and the other end is fixedly connected to the bidirectional winch 36. Among them, a pulley 35 fixedly connected to the top side wall of the door body 1 is used to cooperate with the control mechanism 3 to pull the door body 1 to rotate when opening the civil air defense door, and to cooperate with the control mechanism 3 and the reset mechanism 4 to reset and close the door body 1 when closing the civil air defense door; a sliding tooth plate 311, which is set to be slidably connected to the top of a connecting frame 37 fixedly connected to the bottom of the inner wall of the box body 31, is used to make the sliding tooth plate 311 approach the inner side wall of the box body 31 under the rotation of the first rotating shaft 21, so as to abut against a control switch 32 on the inner side wall of the box body 31 and control the winding of the bidirectional winch 36; a second movable tooth plate 41, which is slidably installed on the inner side wall of the box body 31 far from the door body 1. By rotating the second rotating shaft 22, a non-complete gear 42 fixedly connected to the second rotating shaft 22 is driven to rotate, so that the non-complete gear 42 drives the second movable tooth plate 41 to move, so as to abut against the control switch 32 to make the bidirectional winch 36 rotate in the reverse direction and control the unwinding of the bidirectional winch 36; a second spring 47, which is fixedly arranged on one side of the top of the door body 1. When the door body 1 is opened, a second gear 49 fixedly connected to one end of a connecting rod assembly 44 is driven to rotate by the connecting rod assembly 44 rotatably connected to the wall body 5 and the door body 1, so that a connecting tooth plate 410 engaged with the second gear 49 moves, so that the second spring 47 is compressed. After the bidirectional winch 36 unwinds, the second spring 47 resets to drive the door body 1 to close.

[0035] In this embodiment, when the door body 1 is in contact with the door frame, the locking mechanism 2 can drive the two first movable tooth plates 26 and the two movable rods 27 to approach the top and bottom of the door body 1 simultaneously through the rotation of the transmission gear 251, so as to extend out of the door body 1 and engage with the card slots reserved at the top and bottom of the door frame, realizing the closing and locking of the door body 1. It is difficult to open the civil air defense door without rotating the first handwheel 23 or the second handwheel 43. When the door body 1 is locked, the sliding tooth plate 311 meshes with the first gear 33, and the second movable tooth plate 41 abuts against the unwinding control switch 32. When the first handwheel 23 or the second handwheel 43 is rotated, the transmission gear 251 drives the movable rod 27 to separate from the card slot. At the same time, the sliding tooth plate 311 separates from the first gear 33 and gradually approaches the control switch 32 and abuts against it, starting the two-way winch 36 to wind up the steel wire rope 34, pulling the door body 1 to rotate to open it. At this time, the second spring 47 is compressed as the door body 1 rotates. When it is necessary to keep the door body 1 in the open state, then control the sliding tooth plate 311 to mesh with the first gear 33 again, so that the two-way winch 36 cannot continue to rotate to complete the locking, so that the door body 1 remains in the open state. Then, when it is necessary to close the door body 1, control the sliding tooth plate 311 to separate from the unwinding control switch 32 and not mesh with the first gear 33. At this time, the second movable tooth plate 41 abuts against the unwinding control switch 32, and the two-way winch 36 rotates in the reverse direction to unwind the steel wire rope 34. When unwinding, the door body 1 loses the tension of the steel wire rope 34, and when the compressed second spring 47 resets, it pushes the movable plate 48 to move towards the fourth rotating shaft 46, so that the second gear 49 drives the fourth rotating shaft 46 to rotate, and under the action of the connecting rod assembly 44, pulls the door body 1 towards the door frame to close it, and then makes the movable rod 27 engage with the card slot to complete the locking.

[0036] As Figures 1 - 3 shown, synchronous wheels 25 are respectively fixedly installed at one ends of the first rotating shaft 21 and the second rotating shaft 22. A first handwheel 23 is fixedly installed at one end of the first rotating shaft 21 close to the synchronous wheel 25, and a second handwheel 43 is fixedly installed at one end of the second rotating shaft 22 far from the transmission gear 251. The synchronous wheels 25 are matched with the synchronous belt 24. The synchronous wheel 25 on the second rotating shaft 22 is set to be lengthened, and a transmission gear 251 is fixedly arranged on its outer side. The two sides of the transmission gear 251 are respectively meshed with the first movable tooth plates 26. One ends of the two first movable tooth plates 26 close to the top and bottom of the door body 1 are respectively fixedly connected with movable rods 27. A group of guide blocks 28 and a group of connection blocks 29 are fixedly installed on one side of the door body 1; the guide blocks 28 are slidably connected with the first movable tooth plates 26, the connection blocks 29 are slidably connected with the movable rods 27 and the movable rods 27 can penetrate through the connection blocks 29; card slots are respectively opened at the top and bottom of the door frame, and the movable rods 27 are matched with the card slots.

[0037] In this embodiment, a synchronous belt 24 is provided between the first rotating shaft 21 and the second rotating shaft 22, and the first rotating shaft 21 and the second rotating shaft 22 rotate synchronously. When the door body 1 is in a closed and locked state, when the sliding tooth plate 311 approaches the control switch 32, the transmission tooth 251 rotates to drive the two first movable tooth plates 26 to move. Therefore, the two movable rods 27 move away from the top and bottom of the door body 1 at the same time, separating them from the card slots on the door frame. Conversely, when the first rotating shaft 21 or the second rotating shaft 22 is controlled to make the transmission tooth 251 rotate in the reverse direction, at this time, the second movable tooth plate 41 abuts against the unwinding control switch 32, and the door body 1 is pulled back to close. The two first movable tooth plates 26 drive the two movable rods 27 to approach the top and bottom of the door body 1 until they extend out of the door body 1 and engage with the card slots.

[0038] As Figures 4 - 7 shown, one end of the drive shaft of the two-way winch 36 close to the first rotating shaft 21 is fixedly connected with a first gear 33. The first gear 33 is matched with the sliding tooth plate 311. The bottom of the inner wall of the box body 31 is rotatably connected with a third rotating shaft 38. A worm gear 39 is fixedly connected to the third rotating shaft 38. The worm gear 39 is meshed with the helical teeth on the first rotating shaft 21. A cam 310 is fixedly connected to the top of the third rotating shaft 38. A group of first springs 312 are fixedly connected between the side wall of the two-way winch 36 and the sliding tooth plate 311; the sliding tooth plate 311 is slidably connected with the first gear 33. The first rotating shaft 21 rotates through the connecting frame 37, and the cam 310 is matched with the sliding tooth plate 311.

[0039] In this embodiment, when the door body 1 is in the closed state, the cam 310 does not contact the sliding tooth plate 311. Rotate the first handwheel 23 or the second handwheel 43, so that the spiral teeth on the first rotating shaft 21 drive the worm wheel 39 and the third rotating shaft 38 to rotate, thereby causing the cam 310 fixedly connected to the third rotating shaft 38 to rotate. At this time, the protruding end of the cam 310 abuts against the sliding tooth plate 311, pushing the sliding tooth plate 311 closer to the side wall of the box body 31, and the first spring 312 is stretched until it abuts against the control switch 32, thereby starting the two-way hoist 36 to wind the steel wire rope 34. At this time, the direction of the protruding end of the cam 310 is not perpendicular to the sliding tooth plate 35, and the first handwheel 23 cannot continue to rotate. At the same time, the moving directions of the sliding tooth plate 311 and the second movable tooth plate 41 are opposite. When the sliding tooth plate 311 abuts against the control switch 32, the second movable tooth plate 41 separates from another control switch 32. When the second movable tooth plate 41 abuts against the control switch 32, the first rotating shaft 21 rotates to cause the cam 310 to rotate in the reverse direction. The first spring 312 pulls the sliding tooth plate 311 closer to the first gear 33. The sliding tooth plate 311 separates from another control switch 32 and does not mesh with the first gear 33. The degree of rotation of the first handwheel 23 or the second handwheel 43 required to start the two-way hoist 36 to wind is greater than the degree of rotation required for the subsequent two-way hoist 36 to unwind. When the door body 1 is in the closed state, at this time, the sliding tooth plate 311 is completely meshed with the first gear 33, and the second movable tooth plate 41 abuts against the unwind control switch 32. When the two-way hoist 36 needs to start winding, the sliding tooth plate 311 needs to separate from the first gear 33 first and then abut against the control switch 32. At this time, the second movable tooth plate 41 separates from another control switch 32. The number of teeth on the non-full gear 42 is small, so the moving range of the second movable tooth plate 41 is small. When the two-way hoist 36 needs to start unwinding, when the second movable tooth plate 41 abuts against the control switch 32, the sliding tooth plate 311 is in a state of not contacting both another control switch 32 and the first gear 33.

[0040] As Figures 1 - 5 and Figure 8 shown, the reset mechanism 4 includes a housing 45 fixedly connected to the top side wall of the door body 1. One end of the second spring 47 is fixedly connected to the inner side wall of the housing 45. One end of the link assembly 44 close to the door body 1 is fixedly connected with a fourth rotating shaft 46. The fourth rotating shaft 46 rotates through the housing 45 and is rotatably connected to the bottom of the inner wall of the housing 45. The second gear 49 is fixedly connected to the fourth rotating shaft 46. Activity plates 48 are respectively arranged on both sides of the second gear 49. Connecting tooth plates 410 are respectively fixedly connected to the two activity plates 48. The activity plates 48 are slidably connected to the housing 45; the link assembly 44 consists of two links, and the two links are rotatably connected. One end of the link assembly 44 is rotatably connected to the top wall of the door frame 5. After the two-way hoist 36 winds the steel wire rope, the pulling force of the steel wire rope 34 on the door body 1 is greater than the elastic force of the second spring 47.

[0041] In this embodiment, when the door body 1 needs to be closed, the first handwheel 34 or the second handwheel 43 is controlled, so that the non-full gear 42 drives the second movable tooth plate 41 to move and abut against the control switch 32. At this time, the double winch 36 pays out the wire rope 34 that has been wound up. The door body 1 loses the pulling force of the wire rope 34 on it, and the compressed second spring 47 pushes the movable plate 48 to approach the fourth rotating shaft 46. Therefore, when the connecting tooth plate 410 moves, it drives the second gear 49 to rotate, so that the fourth rotating shaft 46 fixedly connected to the second gear 49 rotates, and the opening angle between the link assemblies 44 composed of two links changes. The side of the door body 1 away from the hinge joint of the door body 1 and the wall body 5 begins to approach the door frame until it fits with the door frame. At this time, by controlling the rotation of the first rotating shaft 21 and the second rotating shaft 22, the movable rod 27 is engaged with the card slot on the door frame.

[0042] As Figure 6 and Figure 7 shown, the control switch 32 is arranged on one side of the inner wall of the box body 31 close to the sliding tooth plate 311, and two control switches 32 are arranged. The sliding tooth plate 311 and the second movable tooth plate 41 respectively correspond to one of them; the side of the first gear 33 close to the control switch 32 and the side of the sliding tooth plate 311 away from the control switch 32 are respectively chamfered.

[0043] In this embodiment, the sliding tooth plate 311 corresponds to the winding control switch 32 of the double winch 36, and the second movable tooth plate 41 corresponds to the paying-out control switch 32. The control switch 32 has a certain elasticity. When the sliding tooth plate 311 approaches the control switch 32, the second movable tooth plate 41 moves away from the other control switch 32, and vice versa. Within the rotation range of the door body 1, by rotating the first handwheel 23 or the second handwheel 43, the sliding tooth plate 311 can be meshed with the first gear 33 again. The chamfer is provided to facilitate the successful meshing of the sliding tooth plate 311 with the rotating first gear 33.

[0044] Working principle: When in use, when the door body 1 is in the closed state, rotate the first handwheel 23, so that the transmission gear 251 drives the two first movable tooth plates 26 to move, thereby making the two movable rods 27 move towards the middle of the door body 1 at the same time, separating the movable rods 27 from the card slots on the door frame. At the same time, the first rotating shaft 21 drives the cam 310 to rotate. When the protruding part of the cam 310 abuts against the sliding tooth plate 311, the sliding tooth plate 311 is pushed towards the side wall of the box body 31, so as to separate from the first gear 33 and abut against the control switch 32. At this time, the first handwheel 23 cannot continue to rotate, and the protruding end direction of the cam 310 is not perpendicular to the sliding tooth plate 311. The winding switch of the two-way winch 36 starts to wind the steel wire rope 34, and the length of the steel wire rope 34 between the top wall 5 and the pulley 35 is shortened, pulling the door body 1 to rotate, realizing the opening of the civil air defense door. If the opening or closing speed is slow, it can also be manually pushed to assist and accelerate the rotation speed of the door body 1. When the door body 1 rotates, the folding angle of the connecting rod assembly 44 changes, driving the fourth rotating shaft 46 to rotate, so that the second gear 49 fixedly connected to the fourth rotating shaft 46 drives the connecting tooth plate 410 to move, and the second spring 47 is compressed accordingly;

[0045] When it is necessary to close the door body 1, rotate the second handwheel 43 in the reverse direction. At this time, the non-full gear 42 drives the second movable tooth plate 41 to move towards the control switch 32. When the end of the second movable tooth plate 41 abuts against the control switch 32, the sliding tooth plate 311 separates from the other control switch 32 and does not contact the first gear 33, that is, the degree of rotation of the first handwheel 23 when the two-way winch 36 winds is greater than the degree of rotation of the second handwheel 43 when unwinding. At this time, the two-way winch 36 rotates in the reverse direction to unwind the steel wire rope 34. After the door body 1 loses the tension of the steel wire rope 34, the second spring 47 pushes the movable plate 48 towards the fourth rotating shaft 46. Therefore, the connecting tooth plate 410 drives the second gear 49 to rotate, so that the connecting rod assembly 44 pulls the door body 1 to reset and fit with the door frame. At this time, continue to rotate the second handwheel 43 until it cannot rotate, and the two movable rods 27 are engaged with the card slots on the door frame, realizing the closing and locking of the door body 1.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A human defense door capable of assisting in opening and closing the door, comprising a door body (1) and a locking mechanism (2), wherein the door body (1) is hinged to a wall (5), the locking mechanism (2) is installed on one side of the door body (1), the locking mechanism (2) comprises a first rotating shaft (21) and a second rotating shaft (22) rotatably connected to the door body (1), a synchronous belt (24) is connected between the first rotating shaft (21) and the second rotating shaft (22), and the characteristics are: The outer wall of one end of the first rotating shaft (21) is provided with spiral teeth, and the other side of the door body (1) is provided with a control mechanism (3), the control mechanism (3) comprises a box body (31) fixedly connected to the door body (1), a bidirectional winch (36) is fixedly installed at the bottom of the inner wall of the box body (31), and a reset mechanism (4) is provided between the door body (1) and the wall (5); A steel wire rope (34) is arranged such that one end is fixedly connected to the top of the wall (5) and the other end is fixedly connected to a bidirectional winch (36), wherein the wire rope cooperates with a pulley (35) fixedly connected to the top side wall of the door body (1) to cooperate with the control mechanism (3) to pull the door body (1) to rotate when the civil air defense door is opened, and cooperates with the control mechanism (3) and the reset mechanism (4) to reset and close the door body (1) when the civil air defense door is closed; a sliding tooth plate (311) which is arranged to be slidably connected to the top of a connecting frame (37) fixedly connected to the bottom of the inner wall of the box body (31), and is used to make the sliding tooth plate (311) approach the inner wall of the box body (31) under the rotation of the first rotating shaft (21), thereby abutting against the control switch (32) on the inner wall of the box body (31), thereby controlling the winding of the bidirectional winch (36); The second movable tooth plate (41) is slidably mounted on the inner wall of the box body (31) away from the door body (1), and drives the non-full gear (42) fixedly connected to the second rotating shaft (22) to rotate by rotating the second rotating shaft (22), so that the non-full gear (42) drives the second movable tooth plate (41) to move, thereby abutting against the control switch (32) to cause the bidirectional hoist (36) to rotate in the opposite direction, thereby controlling the unwinding of the bidirectional hoist (36); The second spring (47) is fixedly arranged on one side of the top of the door body (1). When the door body (1) is opened, the second gear (49) fixedly connected to one end of the connecting rod assembly (44) is driven to rotate through the connecting rod assembly (44) rotatably connected to the wall (5) and the door body (1), so that the connecting toothed plate (410) meshing with the second gear (49) moves, thereby squeezing the second spring (47). After the bidirectional winch (36) is unwound, the second spring (47) is reset to drive the door body (1) to close; A synchronous wheel (25) is fixedly mounted on one end of the first rotating shaft (21) and the second rotating shaft (22), respectively; a first hand wheel (23) is fixedly mounted on one end of the first rotating shaft (21) close to the synchronous wheel (25); the synchronous wheel (25) cooperates with a synchronous belt (24); the synchronous wheel (25) on the second rotating shaft (22) is extended and a transmission tooth (251) is fixedly mounted on the outer side thereof; a second hand wheel (43) is fixedly mounted on one end of the second rotating shaft (22) away from the transmission tooth (251); first movable tooth plates (26) are respectively meshed on both sides of the transmission tooth (251); one end of the two first movable tooth plates (26) close to the top of the door body (1) and the bottom of the door body (1) are respectively fixedly connected to movable rods (27); a group of guide blocks (28) and a group of connecting blocks (29) are fixedly mounted on one side of the door body (1); A first gear (33) is fixedly connected to one end of the driving shaft of the bidirectional winch (36) close to the first rotating shaft (21), and the first gear (33) cooperates with the sliding tooth plate (311). A third rotating shaft (38) is rotatably connected to the bottom of the inner wall of the box body (31), and a worm gear (39) is fixedly connected to the third rotating shaft (38), and the worm gear (39) meshes with the helical teeth on the first rotating shaft (21). A cam (310) is fixedly connected to the top of the third rotating shaft (38), and a group of first springs (312) are fixedly connected between the side wall of the bidirectional winch (36) and the sliding tooth plate (311); The sliding tooth plate (311) is slidably connected to the first gear (33); the first rotating shaft (21) rotates to penetrate the connecting frame (37); and the cam (310) cooperates with the sliding tooth plate (311); The control switch (32) is arranged on a side of the inner wall of the box body (31) close to the sliding tooth plate (311), and two control switches (32) are arranged, and the sliding tooth plate (311) and the second movable tooth plate (41) respectively correspond to one of them.

2. The civil defense door capable of assisting in opening and closing the door according to claim 1, characterized in that: The guide block (28) is slidably connected to the first movable tooth plate (26), the connection block (29) is slidably connected to the movable rod (27), and the movable rod (27) can pass through the connection block (29).

3. The civil defense door capable of assisting in opening and closing the door according to claim 2, characterized in that: The top and bottom of the door frame are respectively provided with card slots, and the movable rod (27) matches the card slots.

4. The civil defense door capable of assisting door opening and closing according to claim 1, characterized in that: The reset mechanism (4) comprises a cover shell (45) fixedly connected to the top side wall of the door body (1), one end of the second spring (47) is fixedly connected to the inner side wall of the cover shell (45), one end of the connecting rod assembly (44) close to the door body (1) is fixedly connected to a fourth rotating shaft (46), the fourth rotating shaft (46) rotates through the cover shell (45) and is rotatably connected to the bottom of the inner wall of the cover shell (45), the second gear (49) is fixedly connected to the fourth rotating shaft (46), and movable plates (48) are respectively provided on both sides of the second gear (49), the connecting tooth plate (410) is respectively fixedly connected to the two movable plates (48), and the movable plate (48) is slidably connected to the cover shell (45).

5. The civil defense door capable of assisting in opening and closing the door according to claim 4, characterized in that: The connecting rod assembly (44) is composed of two connecting rods, which are rotatably connected. One end of the connecting rod assembly (44) is rotatably connected to the top wall (5) of the door frame. After the two-way winch (36) winds up the steel wire rope (34), the pulling force of the steel wire rope (34) on the door body (1) is greater than the elastic force of the second spring (47).

6. The civil defense door capable of assisting in opening and closing the door according to claim 1, characterized in that: A side of the first gear (33) close to the control switch (32) and a side of the sliding tooth plate (311) away from the control switch (32) are respectively chamfered.

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