Civil air defense door capable of assisting door opening and closing

Abstract

The invention relates to the technical field of civil air defense doors, in particular to a civil air defense door capable of assisting door opening and closing, which comprises a door body and a locking mechanism, the locking mechanism is mounted on one side of the door body and comprises a first rotating shaft and a second rotating shaft which are rotationally connected with 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 a wall. The cam is rotated by rotating the first hand wheel or the second hand wheel, the protruding end of the cam pushes the sliding toothed plate to slide to be completely separated from the first gear and then abut against the control switch, and therefore the steel wire rope is wound by the two-way winch, the door body can be pulled to rotate, the civil air defense door is opened, and the door body can be opened without being pushed vigorously; and the sliding toothed plate can be separated from the control switch by controlling the first hand wheel or the second hand wheel, so that the sliding toothed plate is meshed with the first gear again, and the bidirectional winch is locked and cannot rotate, so that the door body is kept in an open state, and people can quickly pass through the door body.

Description

Technical Field

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

[0002] Civil defense doors refer to building doors and windows with protective functions. They are generally used for protection in shelters or during disasters such as nuclear explosions. They are doors used in buildings to protect, control and evacuate people. Their function is not just a door, but also an important barrier between the inside and outside of the building, which can effectively protect the safety of the building and the people inside. It has many functions, generally including fire prevention, theft prevention, sound insulation, impact resistance and isolation.

[0003] The thickness of the civil air defense door is relatively thick and the door body is generally heavy. After the locking device of some civil air defense doors is opened, it is necessary to push the door body to rotate in order to open the civil air defense door. However, due to the heavy weight of the door body itself, it is difficult for some people with less strength or physical disabilities to push the door body to rotate. In case of emergency, the civil air defense door needs to be kept open to ensure that people can pass quickly. The door body that is difficult to push will directly cause the door body to open at a small angle and cannot meet the passage of multiple people at the same time. If there are a large number of refugees and many people squeeze into the civil air defense door, congestion and other unexpected situations may occur, resulting in the refugees being unable to quickly enter the safe area for refuge. After entering the safe area, the door body also needs to be rotated to close the civil air defense door. Failure to close the door body in time may cause injury to the refugees, resulting in serious consequences.

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

[0005] In view of the problem that the civil defense door in the prior art is too heavy and difficult to be pushed, the present invention provides a civil defense door that can assist in opening and closing the door.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a human defense door that can assist in opening and closing the door, comprising a door body and a locking mechanism, the door body is hinged to the wall, the locking mechanism is installed on one side of the door body, the locking mechanism comprises a first rotating shaft and a second rotating shaft connected to the door body for rotation, a synchronous belt is connected between the first rotating shaft and the second rotating shaft, a spiral tooth is arranged on the outer wall of one end of the first rotating shaft, a control mechanism is arranged on the other side of the door body, the control mechanism comprises a box body fixedly connected to the door body, a bidirectional winch is fixedly installed on the bottom of the inner wall of the box body, and a reset mechanism is arranged between the door body and the wall; A steel wire rope is configured such that one end is fixedly connected to the top of the wall and the other end is fixedly connected to a bidirectional winch, wherein the wire rope cooperates with a pulley fixedly connected to the top side wall of the door body, and is used to cooperate with the control mechanism to pull the door body to rotate when the civil air defense door is opened, and cooperate with the control mechanism and the reset mechanism to reset and close the door body when the civil air defense door is closed; 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 wall of the box body under the rotation of the first rotating shaft, so as to abut against the control switch on the inner wall of the box body to control the winding of the bidirectional winch; The second movable tooth plate is slidably mounted on the inner wall of the box body away from the door body, and the second rotating shaft is rotated to drive the non-full gear fixedly connected to the second rotating shaft to rotate, so that the non-full gear drives the second movable tooth plate to move, thereby counteracting the control switch to make the two-way winch rotate in the opposite direction, thereby controlling the unwinding of the two-way winch; The second spring is fixedly arranged on one side of the top of the door body. When the door body is opened, the second gear fixedly connected to one end of the connecting rod assembly is driven to rotate through the connecting rod assembly rotatably connected to the wall and the door body, so that the connecting tooth plate meshing with the second gear moves, thereby squeezing the second spring. After the two-way winch is unwound, the second spring resets and drives the door body to close.

[0007] Preferably, a synchronous wheel is fixedly installed at one end of the first rotating shaft and the second rotating shaft respectively, a first hand wheel is fixedly installed at one end of the first rotating shaft close to the synchronous wheel, and a second hand wheel is fixedly installed at one end of the second rotating shaft away from the transmission tooth, the synchronous wheel cooperates with a synchronous belt, the synchronous wheel on the second rotating shaft is lengthened, and a transmission tooth is fixedly installed on its outer side, and first movable tooth plates are respectively meshed on both sides of the transmission tooth, and movable rods are respectively fixedly connected at one end of the two first movable tooth plates close to the top and bottom of the door body, and a group of guide blocks and a group of connecting blocks are fixedly installed on one side of the door body.

[0008] Preferably, the guide block is slidably connected to the first movable tooth plate, the connecting block is slidably connected to the movable rod, and the movable rod can pass through the connecting block.

[0009] Preferably, the top and bottom of the door frame are respectively provided with card slots, and the movable rod cooperates with the card slots.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Beneficial effects of the present invention: (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.

[0017] (2) The civil air defense door capable of assisting in opening and closing the door described in the present invention, when closing the civil air defense door, the second hand wheel or the first hand wheel is rotated to make the second movable tooth plate abut against another control switch. At this time, the sliding tooth plate is not in contact with the control switch and the first gear, so that the two-way winch rotates in the opposite direction to unwind the wire rope, and the stretched second spring is reset, pulling the door body to rotate toward the door frame. The opening and closing of the civil air defense door are assisted by an external force to pull the door body, which can help users open and close the door quickly without pushing hard, thereby improving the traffic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 A schematic diagram of the connection between the door body and the locking mechanism provided by the present invention; Figure 3 A schematic diagram of the locking mechanism provided by the present invention; Figure 4 A schematic diagram of the connection between the control mechanism and the reset mechanism provided by the present invention; Figure 5 for Figure 4 A magnified image of point A; Figure 6 A schematic diagram of the connection between the first gear and the sliding gear plate provided by the present invention; Figure 7 A schematic diagram of the connection between the second movable tooth plate and the control switch provided by the present invention; Figure 8 This is a schematic diagram of the reset mechanism provided by the present invention.

[0020] In the figure: 1, door body; 2, locking mechanism; 21, first rotating shaft; 22, second rotating shaft; 23, first hand wheel; 24, synchronous belt; 25, synchronous wheel; 251, transmission gear; 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, wire rope; 35, pulley; 36, two-way winch; 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, non-full gear; 43, second hand wheel; 44, connecting rod assembly; 45, cover; 46, fourth rotating shaft; 47, second spring; 48, movable plate; 49, second gear; 410, connecting tooth plate; 5, wall. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Example: Figure 1-Figure 8As shown, a human defense door capable of assisting in opening and closing a door according to the present invention comprises a door body 1 and a locking mechanism 2, wherein the door body 1 is hinged to a wall 5, and the locking mechanism 2 is installed on one side of the door body 1, and 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 a spiral tooth is arranged on an outer wall of one end of the first rotating shaft 21, and a control mechanism 3 is arranged on the other side of the door body 1, and the control mechanism 3 comprises a box body 31 fixedly connected to the door body 1, and a A two-way winch 36, a reset mechanism 4 is arranged between the door body 1 and the wall 5; a steel wire rope 34, one end of which is fixedly connected to the top wall 5 away from the hinged joint between the door body 1 and the wall 5 when the door body 1 is fully opened, and the other end is fixedly connected to the two-way winch 36, wherein 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 arranged The sliding connection is at the top of the connecting frame 37 which is 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, so as to abut against the control switch 32 on the inner wall of the box body 31, and control the winding of the two-way winch 36; the second movable tooth plate 41 is slidably installed on the inner wall of the box body 31 away from the door body 1, and by rotating the second rotating shaft 22, the non-full gear 42 fixedly connected to the second rotating shaft 22 is driven to rotate, so that the non-full gear 42 drives the second movable tooth plate 41 to move , thereby counteracting the control switch 32 to make the two-way winch 36 rotate in the opposite direction, controlling the unwinding of the two-way winch 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 tooth plate 410 meshing with the second gear 49 moves, thereby squeezing the second spring 47. After the two-way winch 36 is unwound, the second spring 47 is reset to drive the door body 1 to close.

[0023] In this embodiment, the locking mechanism 2 can, when the door body 1 is fitted with the door frame, drive the two first movable tooth plates 26 and the two movable rods 27 to simultaneously approach the top and bottom of the door body 1 through the rotation of the transmission tooth 251, thereby extending out of the door body 1 and engaging with the card slots reserved at the top and bottom of the door frame to achieve the closing and locking of the door body 1. It is difficult to open the civil defense door without rotating the first hand wheel 23 or the second hand wheel 43. When the door body 1 is locked, the sliding tooth plate 311 is engaged with the first gear 33, and the second movable tooth plate 41 is against the unwinding control switch 32. When the first hand wheel 23 or the second hand wheel 43 is rotated, the transmission tooth 251 drives the movable rod 27 to separate from the card slot. At the same time, the sliding tooth plate 311 is separated from the first gear 33 and gradually approaches the control switch 32 to abut against it, starting the two-way winch 36 to reel in the wire rope 34, pulling the door body 1 to rotate and open it. When the second spring 47 is compressed as the door body 1 rotates, when the door body 1 needs to be kept in the open state, the sliding tooth plate 311 is controlled to mesh with the first gear 33 again, so that the two-way winch 36 cannot continue to rotate to complete the locking, thereby keeping the door body 1 in the open state. Later, when the door body 1 needs to be closed, the sliding tooth plate 311 is controlled to separate from the winding control switch 32 and not mesh with the first gear 33. At this time, the second movable tooth plate 41 is against the unwinding control switch 32, and the two-way winch 36 rotates in the opposite direction to unwind the wire rope 34. When unwinding, the door body 1 loses the pulling force of the wire rope 34, and the compressed second spring 47 is reset to push the movable plate 48 to move toward 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, the door body 1 is pulled close to the door frame to achieve closing, and then the movable rod 27 is engaged with the slot to complete the locking.

[0024] like Figure 1-Figure 3 As shown, a synchronous wheel 25 is fixedly installed at one end of the first rotating shaft 21 and the second rotating shaft 22, a first hand wheel 23 is fixedly installed at one end of the first rotating shaft 21 close to the synchronous wheel 25, and a second hand wheel 43 is fixedly installed at one end of the second rotating shaft 22 away from the transmission tooth 251, the synchronous wheel 25 cooperates with the synchronous belt 24, the synchronous wheel 25 on the second rotating shaft 22 is lengthened, and a transmission tooth 251 is fixedly arranged on its outer side, and first movable tooth plates 26 are respectively meshed on both sides of the transmission tooth 251, and movable rods 27 are fixedly connected at 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, and a group of guide blocks 28 and a group of connecting blocks 29 are fixedly installed on one side of the door body 1; the guide block 28 is slidably connected to the first movable tooth plate 26, and the connecting block 29 is slidably connected to the movable rod 27 and the movable rod 27 can pass through the connecting block 29; the top and bottom of the door frame are respectively provided with card slots, and the movable rod 27 cooperates with the card slots.

[0025] In this embodiment, a synchronous belt 24 is arranged 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, thereby making the two movable rods 27 move away from the top and bottom of the door body 1 at the same time, so that they are separated from the 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 opposite direction, at this time the second movable tooth plate 41 is against the unwinding control switch 32, and the door body 1 is pulled to reset and close, and 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 slots.

[0026] like Figure 4-Figure 7 As shown, the first gear 33 is fixedly connected to one end of the driving shaft of the two-way winch 36 close to the first rotating shaft 21, and the first gear 33 cooperates with the sliding tooth plate 311. The bottom of the inner wall of the box body 31 is rotatably connected to the third rotating shaft 38, and a worm gear 39 is fixedly connected to the third rotating shaft 38. 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. A group of first springs 312 is 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 to the first gear 33, and the first rotating shaft 21 rotates through the connecting frame 37, and the cam 310 cooperates with the sliding tooth plate 311.

[0027] In this embodiment, when the door body 1 is in the closed state, the cam 310 does not contact the sliding tooth plate 311, and the first hand wheel 23 or the second hand wheel 43 is rotated so that the spiral teeth on the first rotating shaft 21 drive the worm gear 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 to approach the side wall of the box body 31, and the first spring 312 is stretched until it is in contact with the control switch 32. The first hand wheel 23 is unable to rotate further. At the same time, the sliding tooth plate 311 and the second movable tooth plate 41 move in opposite directions. When the sliding tooth plate 311 and the control switch 32 are pressed against each other, the second movable tooth plate 41 is separated from the other control switch 32. When the second movable tooth plate 41 and the control switch 32 are pressed against each other, the first rotating shaft 21 rotates to make the cam 310 rotate in the opposite direction. The first spring 312 pulls the sliding tooth plate 311 toward the first gear 33, and the sliding tooth plate 311 is separated from the other control switch 32 and does not mesh with the first gear 33. The degree of rotation of the first hand wheel 23 or the second hand wheel 43 required for the rewinding of the two-way winch 36 is greater than the degree of rotation required for the subsequent unwinding of the two-way winch 36. When the door body 1 is in the closed state, the sliding tooth plate 311 is fully meshed with the first gear 33, and the second movable tooth plate 41 is against the unwinding control switch 32. When the bidirectional winch 36 needs to be started for rewinding, the sliding tooth plate 311 needs to be separated from the first gear 33 and then against the control switch 32. At this time, the second movable tooth plate 41 is separated from the other control switch 32. The number of teeth on the non-full gear 42 is small, so the movement range of the second movable tooth plate 41 is small. When the bidirectional winch 36 needs to be started for unwinding, when the second movable tooth plate 41 is against the control switch 32, the sliding tooth plate 311 is in a state of not contacting the other control switch 32 and the first gear 33.

[0028] like Figure 1-Figure 5 and Figure 8 As shown, the reset mechanism 4 includes 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 wall of the cover shell 45, and the end of the connecting rod assembly 44 close to the door body 1 is fixedly connected to the 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 arranged on both sides of the second gear 49, and the connecting tooth plates 410 are respectively fixedly connected to the two movable plates 48, and the movable plates 48 are slidably connected to the cover shell 45; the connecting rod assembly 44 is composed of two connecting rods, which are rotatably connected, and 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 wire rope, the pulling force of the wire rope 34 on the door body 1 is greater than the elastic force of the second spring 47.

[0029] When the door 1 needs to be closed, the first hand wheel 34 or the second hand wheel 43 is controlled so that the non-full gear 42 drives the second movable tooth plate 41 to move and counteract the control switch 32. At this time, the two-way winch 36 unwinds the wound wire rope 34, and the door 1 loses the pulling force of the wire rope 34. The compressed second spring 47 pushes the movable plate 48 to approach the fourth rotating shaft 46. Therefore, the connecting tooth plate 410 drives the second gear 49 to rotate when it moves, thereby causing the fourth rotating shaft 46 fixedly connected to the second gear 49 to rotate, and the opening angle between the connecting rod assembly 44 composed of two connecting rods changes. The side of the door body 1 away from the hinge between the door body 1 and the wall 5 begins to approach the door frame until it fits with the door frame. At this time, the rotation of the first rotating shaft 21 and the second rotating shaft 22 is controlled so that the movable rod 27 is engaged with the slot on the door frame.

[0030] like Figure 6 and Figure 7 As 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, and the sliding tooth plate 311 and the second movable tooth plate 41 correspond to one of them respectively; 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 chamfered respectively.

[0031] In this embodiment, the sliding tooth plate 311 corresponds to the winding control switch 32 of the bidirectional winch 36, and the second movable tooth plate 41 corresponds to the unwinding 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. Conversely, within the rotation range of the door body 1, the sliding tooth plate 311 can be engaged with the first gear 33 again by rotating the first hand wheel 23 or the second hand wheel 43. The chamfer is set to facilitate the successful engagement of the sliding tooth plate 311 with the rotating first gear 33.

[0032] Working principle: When in use, when the door body 1 is in the closed state, the first hand wheel 23 is rotated so that the transmission tooth 251 drives the two first movable tooth plates 26 to move, thereby making the two movable rods 27 move toward the middle of the door body 1 at the same time, so that the movable rods 27 are separated from the 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 toward the side wall of the box body 31, thereby separating from the first gear 33 and abutting against the control switch 32. At this time, the first hand wheel 23 cannot continue to rotate, and the cam 310 The protruding end direction is in a non-vertical state with the sliding tooth plate 311, and the winding switch of the two-way winch 36 is started to wind up the wire rope 34, and the length of the wire rope 34 between the top wall 5 and the pulley 35 is shortened, pulling the door body 1 to rotate, so as to realize the opening of the civil air defense door. If the opening or closing speed is slow, it can also be assisted by manual pushing to speed up 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; When the door body 1 needs to be closed, the second hand wheel 43 is rotated in the opposite 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 is against the control switch 32, the sliding tooth plate 311 is separated from the other control switch 32 and does not contact the first gear 33. That is, the degree of rotation of the first hand wheel 23 when the two-way winch 36 is reeled in is greater than the degree of rotation of the second hand wheel 43 when unreeling. At this time, the two-way winch 36 rotates in the opposite direction to unreel the wire rope 34. After the door body 1 loses the tension of the wire rope 34, the second spring 47 pushes the movable plate 48 toward 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 hand wheel 43 until it can no longer rotate, and the two movable rods 27 engage with the slots on the door frame to achieve the closing and locking of the door body 1.

[0033] 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 to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached 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 body (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.

2. The civil defense door capable of assisting in opening and closing the door according to claim 1, characterized in that: 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); a second hand wheel (43) is fixedly mounted on one end of the second rotating shaft (22) away from the transmission tooth (251); 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; first movable tooth plates (26) are respectively meshed on both sides of the transmission tooth (251); movable rods (27) are fixedly connected to 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); a group of guide blocks (28) and a group of connecting blocks (29) are fixedly mounted on one side of the door body (1).

3. The civil defense door capable of assisting door opening and closing according to claim 2, 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).

4. The civil defense door capable of assisting in opening and closing the door according to claim 3, 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.

5. The civil defense door capable of assisting door opening and closing according to claim 1, characterized in that: 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).

6. The civil defense door capable of assisting in opening and closing the door according to claim 5, characterized in that: 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).

7. The civil defense door capable of assisting in opening and closing the door 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).

8. The civil defense door capable of assisting in opening and closing the door according to claim 7, 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).

9. The civil defense door capable of assisting in opening and closing the door according to claim 1, characterized in that: 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.

10. The civil defense door capable of assisting in opening and closing the door according to claim 5, 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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