Threshold-free electrically-driven flat opening type protective air-tight door

Abstract

The utility model provides a doorsill-free electrically-driven flat-opening type protective air-tight door which comprises a door frame, a door body, a door cover, a door body, a door cover, a door cover and a door cover, and the door frame is poured in a door frame wall; the door leaf is hinged to the door frame; the locking mechanism is connected with the door leaf, and after the door leaf is closed, the locking mechanism can fix the door leaf on the door frame; and the sealing beam is arranged at the bottom of the door leaf, the sealing beam is connected with the locking mechanism, and the sealing beam can seal the space between the bottom of the door leaf and the door frame. The air-tight door has the advantages of being high in driving capacity, compact in structure and convenient to maintain. The bottom of the air-tight door is in a threshold-free and trench-free design, the lifting sealing beam is linked with the opening and closing process of the locking mechanism, independent operation of personnel is not needed, and barrier-free passing of vehicles and personnel can be achieved. The opening and closing device, the locking mechanism and the position locking device are all driven by motors, maintenance is convenient, and manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a threshold-free electrically driven flat-opening protective closed door. Background Art

[0002] The protective sealed doors in protective engineering can effectively block shock waves and toxic gases from entering the fortifications, and play a vital role in protecting the lives and property of the people during wartime. In addition to the protective sealing performance that affects the function, its ease of use and guarantee of barrier-free passage of vehicles and personnel are also important factors in measuring its quality.

[0003] The operation mode of protective equipment has changed from the traditional manual operation mode to the automatic operation mode. The automatic operation mode has the advantages of fast closing, reliable locking, and remote unified control of multiple sets of equipment. In the peacetime-wartime transition phase or wartime, the number of operators can be significantly reduced, and the labor intensity of operation can be reduced. Remote operation can improve the safety of operators and realize the joint defense and control of multiple defense openings in the entire protection project. On the other hand, the common fixed threshold type requires the laying of special ramps to ensure the passage of vehicles and personnel, and the movable threshold type protective closed door requires on-site manual bolt installation due to its bottom sealing structure, which is not conducive to the realization of efficient automatic control of equipment.

[0004] The automated drive technology of protective equipment mostly adopts electric drive technology or hydraulic drive technology. Although hydraulic drive technology has the advantage of strong drive capability, it has the disadvantages of high cost, complex system, large volume occupied by drive pump station and difficult maintenance. Existing electric drive solutions often adopt motor drive. In the case of limited space, it is limited by the size of the motor and has limited opening and closing capabilities. It is difficult to meet the requirements of protective closed doors with large deadweight or protective closed doors with other opening and closing loads.

[0005] How to realize the automatic driving function of protective equipment, improve the capacity of the driving system, reduce the cost of the driving system, reduce its space occupancy and reduce the difficulty of maintenance are the technical issues that protective equipment needs to focus on and solve at this stage. Utility Model Content

[0006] The purpose of the utility model is to provide a threshold-free electrically driven flat-opening protective airtight door, which has the characteristics of strong driving ability, compact structure, and convenient maintenance. The bottom of the equipment adopts a threshold-free and trench-free design, and the bottom sealing structure is linked with the opening and closing process of the door leaf, without the need for separate operation by personnel, and can realize barrier-free passage of vehicles and personnel.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A threshold-free electrically driven swing-type protective airtight door, the protective airtight door is arranged at the two ends of a tunnel, the protective airtight door comprises: a door frame, the door frame is cast in the door frame wall; a door leaf, the door leaf is hinged to the door frame; a locking mechanism, the locking mechanism is connected to the door leaf, and after the door leaf is closed, the locking mechanism can fix the door leaf to the door frame; a sealing beam, the sealing beam is arranged at the bottom of the door leaf, the sealing beam is connected to the locking mechanism, and the sealing beam can seal the bottom of the door leaf and the door frame.

[0009] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective sealed door, the protective sealed door also includes an opening and closing device, which includes a first electric push rod, a first support and a second support, the first support is arranged on the door leaf, and the second support is arranged on the door frame, the fixed end of the first electric push rod is hinged to the second support, and the output end of the first electric push rod is hinged to the first support, and the opening angle of the door leaf relative to the door frame can be controlled by controlling the push-out length of the first electric push rod; the first electric push rod is driven by a first motor.

[0010] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective sealed door, the door frame includes a lower sill, an upper frame and a side frame, and the outer periphery of the door frame is provided with anchor hooks; a door shaft is vertically provided on one of the side frames, a hinge is installed on the door shaft, and the door leaf is hinged to the door shaft through the hinge; the fitting surfaces of the upper frame and the side frame with the door leaf are all provided with a first sealing strip; the upper surface of the lower sill is flush with the ground.

[0011] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective airtight door, the locking mechanism includes a reducer, a driving device, a first transmission unit and a second transmission unit, the reducer is arranged in the door leaf, the reducer includes an input end and two output ends, the output end of the driving device is connected to the input end of the reducer, the first transmission unit is connected to an output end of the reducer, an upper locking head is connected to the upper part of the first transmission unit, a locking seat is provided on the upper part of the door leaf, a lock hole is provided on the upper frame, and the driving device drives the reducer to open. When the reducer is driven by the driving device, the upper locking head can enter or slide out of the locking seat. After the upper locking head slides out of the locking seat, the upper end of the upper locking head can enter the locking hole of the upper frame. The second transmission unit is connected to an output end of the reducer, the lower part of the second transmission unit is connected to the lower locking head, and the lower sill is provided with a locking hole. When the drive device drives the reducer, the lower end of the lower locking head can enter the locking hole of the lower sill. The reducer is a worm gear reducer, and position sensors are provided for the fully locked and fully unlocked positions of the locking mechanism.

[0012] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective airtight door, the first transmission unit includes a vertical connecting rod, a first commutator, a first horizontal connecting rod, a second horizontal connecting rod, a first crank, a first telescopic rod, a third horizontal connecting rod, a fourth horizontal connecting rod, a second crank and a second telescopic rod, the first commutator includes an input end and two output ends, the output end of the reducer is connected to the input end of the first commutator through the vertical connecting rod, one end of the first horizontal connecting rod is connected to an output end of the first commutator, the other end of the first horizontal connecting rod is connected to one end of the second horizontal connecting rod, and the other end of the second horizontal connecting rod is connected to a side wall of the door leaf in the width direction. , one end of the first crank is rotatably connected to the middle part of the second horizontal connecting rod, the other end of the first crank is connected to the input end of the first telescopic rod, and the output end of the first telescopic rod is connected to the locking head; one end of the third horizontal connecting rod is connected to the other output end of the first commutator, the other end of the third horizontal connecting rod is connected to one end of the fourth horizontal connecting rod, the other end of the fourth horizontal connecting rod is connected to the other side wall in the width direction of the door leaf, one end of the second crank is rotatably connected to the middle part of the fourth horizontal connecting rod, the other end of the second crank is connected to the input end of the second telescopic rod, and the output end of the second telescopic rod is connected to the locking head.

[0013] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective airtight door, the second transmission unit includes a second commutator, a fifth horizontal connecting rod, a sixth horizontal connecting rod, a third crank, a third telescopic rod, a seventh horizontal connecting rod, an eighth horizontal connecting rod, a fourth crank and a fourth telescopic rod, the second commutator includes an input end and two output ends, the output end of the reducer is connected to the input end of the second commutator through the vertical connecting rod, one end of the fifth horizontal connecting rod is connected to an output end of the second commutator, the other end of the fifth horizontal connecting rod is connected to one end of the sixth horizontal connecting rod, and the other end of the sixth horizontal connecting rod is connected to a side wall in the width direction of the door leaf. , one end of the third crank is rotatably connected to the middle part of the sixth horizontal connecting rod, the other end of the third crank is connected to the input end of the third telescopic rod, and the output end of the third telescopic rod is connected to the lower lock; one end of the seventh horizontal connecting rod is connected to the other output end of the second commutator, the other end of the seventh horizontal connecting rod is connected to one end of the eighth horizontal connecting rod, and the other end of the eighth horizontal connecting rod is connected to the other side wall in the width direction of the door leaf, one end of the fourth crank is rotatably connected to the middle part of the eighth horizontal connecting rod, the other end of the fourth crank is connected to the input end of the fourth telescopic rod, and the output end of the fourth telescopic rod is connected to the lower lock.

[0014] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective closed door, the length of the sealing beam is consistent with the width of the door leaf, the lower ends of the third telescopic rod and the fourth telescopic rod are connected to the upper end of the sealing beam, a plurality of lower lock heads are arranged on one side wall of the sealing beam, and the fitting surface of the sealing beam and the door leaf and the fitting surface of the sealing beam and the door frame are both provided with a second sealing strip; a plurality of limiting components are arranged on the sealing beam, and the limiting components include limiting grooves, limiting columns and limiting Screw, the limiting groove is arranged on the door leaf, the upper end of the sealing beam is connected to the lower end of the limiting column, the upper part of the limiting column is provided with the limiting screw, one end of the limiting screw is located in the limiting groove; there is a gap between the lower end of the door leaf and the door frame, when the driving device drives the reducer, the sealing beam can rise or fall, and when the sealing beam falls, the sealing beam can seal the gap between the door leaf and the door frame, and at the same time, the lower lock head can slide into the lock hole on the lower sill.

[0015] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective closed door, the driving device includes: an engine, a chain, a first sprocket and a second sprocket, the first sprocket is arranged at the input end of the reducer, the second sprocket is arranged at the output end of the engine, and the first sprocket and the second sprocket are connected by a chain; the side of the door leaf close to the interior of the tunnel is the inner surface, and the side of the door leaf away from the interior of the tunnel is the outer surface, and also includes a first handwheel and a second handwheel, the first handwheel and the second handwheel are both coaxially arranged with the first sprocket, the first handwheel is arranged on one side of the outer surface of the door leaf, and the second handwheel is arranged on one side of the inner surface of the door leaf; the engine is an electric engine.

[0016] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective airtight door, the protective airtight door also includes a position locking device, which includes a locking pin, a second electric push rod, a first guide support and a locking support, the second electric push rod and the first guide support are both installed on the door leaf, the output end of the second electric push rod is connected to the upper end of the locking pin, the locking support is cast on the floor, and a lock hole for inserting the locking pin is provided on the locking support, and the lower end of the locking pin can enter the lock hole of the locking support after passing through the first guide support; the second electric push rod is driven by a second motor; when the door leaf is fully opened, the locking pin is driven by the second electric push rod to insert into the lock hole of the locking support to complete the locking of the door leaf in the fully open position.

[0017] Furthermore, in the above-mentioned threshold-free electrically driven swing-type protective sealed door, the protective sealed door also includes a supporting device, which includes a roller, a fixed support and a second guide support, the fixed support is arranged on a side wall of the door leaf, the roller is installed on the fixed support, the second guide support is cast on the floor, and the position of the second guide support corresponds to the position of the door leaf when it is fully opened; the upper surface of the second guide support is provided with a guide plate and a support plate, the upper surface of the guide plate is an inclined surface, and the upper surface of the support plate is a plane, and when the door leaf is close to the fully open position, the roller can roll onto the support plate under the guidance of the guide plate.

[0018] It can be seen from the analysis that the utility model discloses a threshold-free electrically driven flat-opening protective closed door, which has the characteristics of strong driving ability, compact structure, and convenient maintenance. The bottom of the closed door adopts a threshold-free and trench-free design, and the lifting and lowering sealing beam is linked with the opening and closing process of the locking mechanism. No separate operation is required by personnel, and barrier-free passage of vehicles and personnel can be achieved. The opening and closing device, the locking mechanism, and the position locking device are all driven by motors, which have the advantages of simple system, convenient maintenance, and low cost compared with the hydraulic drive solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0021] Figure 2 It is another three-dimensional structural schematic diagram of an embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure when the door leaf of one embodiment of the utility model is in the fully open position.

[0023] Figure 4 This is another three-dimensional structural schematic diagram of a door leaf of an embodiment of the present invention when it is in a fully open position.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the locking mechanism and the sealing beam assembled according to an embodiment of the utility model.

[0025] Figure 6 It is a structural schematic diagram of a locking mechanism according to an embodiment of the utility model.

[0026] Description of reference numerals: 1 door frame; 11 lower sill; 12 upper frame; 13 side frames; 14 anchoring hooks; 15 door shafts; 16 hinges; 17 door frame wall; 18 first sealing strip; 19 second sealing strip; 2 door leaf; 3 sealing beam; 31 limit groove; 32 limit post; 33 limit screw; 4 opening and closing device; 41 first electric push rod; 42 first support; 43 second support; 44 first motor; 5 locking mechanism; 51 reducer; 52 driving device; 53 vertical connecting rod; 54 first commutator; 55 first horizontal connecting rod; 56 second horizontal connecting rod; 57 first crank; 58 first telescopic rod; 59 third horizontal connecting rod; 60 fourth horizontal connecting rod; 61 second crank; 62 second telescopic rod; 63 upper lock head; 64 second commutator; 65 fifth horizontal connecting rod; 66 sixth horizontal connecting rod; 67 third crank; 68 third telescopic rod; 69 seventh horizontal connecting rod; 70 eighth horizontal connecting rod; 71 fourth crank; 72 fourth telescopic rod; 73 lower lock head; 74 engine; 75 chain; 76 locking seat; 77 first handwheel; 78 second handwheel; 8 locking device; 81 locking bolt; 82 second electric push rod; 83 first guiding support; 84 locking support; 85 first motor; 9 supporting device; 91 roller; 92 fixed support; 93 second guiding support; 94 guiding plate; 95 supporting plate. Detailed implementation manners

[0027] The present utility model will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Each example is provided by way of explanation of the present utility model rather than a limitation thereof. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present utility model include such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0028] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected", "connected to", "provided with" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; it can be a wired connection, a radio connection, or a wireless communication signal connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] One or more examples of the utility model are shown in the attached drawings. The detailed description uses numbers and letters to refer to the features in the drawings. Similar or similar marks in the drawings and descriptions have been used to refer to similar or similar parts of the utility model. As used herein, the terms "first", "second", and "third" etc. are used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.

[0030] like Figures 1 to 6 As shown, according to an embodiment of the utility model, a threshold-free electrically driven flat-opening protective airtight door is provided, and the protective airtight door is arranged at two ends of the tunnel, such as Figure 1 and Figure 2 As shown, the protective airtight door includes: a door frame 1, which is cast in the door frame wall 17; a door leaf 2, which is hinged to the door frame 1; a locking mechanism 5, which is connected to the door leaf 2, and after the door leaf 2 is closed, the locking mechanism 5 can fix the door leaf 2 on the door frame 1; a sealing beam 3, which is arranged at the bottom of the door leaf 2, and is connected to the locking mechanism 5, and the sealing beam 3 can seal the bottom of the door leaf 2 and the door frame 1. The sealing beam 3 can seal the gap between the door leaf 2 and the lower sill 11 of the door frame 1 when the door leaf 2 is closed, so as to prevent shock waves and toxic gases from entering the tunnel, and protect the lives and property of the people in wartime. The sealing beam 3 can also prevent external water from flowing into the tunnel, so that the protective airtight door of the utility model has a flood prevention function.

[0031] Furthermore, if Figure 3 As shown, the protective closed door also includes an opening and closing device 4, which includes a first electric push rod 41, a first support 42 and a second support 43. The first support 42 is arranged on the door leaf 2, and the second support 43 is arranged on the door frame 1. The fixed end of the first electric push rod 41 is hinged with the second support 43, and the output end of the first electric push rod 41 is hinged with the first support 42. By controlling the push-out length of the first electric push rod 41, the opening angle of the door leaf 2 relative to the door frame 1 can be controlled to realize the automatic opening and closing function of the door leaf 2. The first electric push rod 41 is driven by the first motor 44. Compared with the hydraulic drive solution, it has the advantages of simple system, convenient maintenance and low cost.

[0032] Furthermore, if Figure 4As shown in the figure, the door frame 1 includes a lower sill 11, an upper side frame 12 and side frames 13. An anchor hook 14 is provided on the outer periphery of the door frame 1. The door frame 1 is cast in the tunnel through the anchor hook 14 to enhance the stability of the connection between the door frame 1 and the door frame wall 17. A door hinge 15 is vertically provided on one side frame 13. A hinge 16 is installed on the door hinge 15. The door leaf 2 is hinged to the door hinge 15 through the hinge 16. First sealing rubber strips 18 are provided on the mating surfaces of the upper side frame 12 and the side frames 13 with the door leaf 2. By controlling the size of the upper lock head 63, the compression amount of the first sealing rubber strip 18 can be controlled, thereby ensuring the sealing effect. The upper surface of the lower sill 11 is flush with the ground. At the equipment installation location, there are no any obstacles or grooves on the road surface, and unobstructed passage of vehicles and personnel can be achieved.

[0033] Further, as Figure 5 and Figure 6 shown in the figure, the locking mechanism 5 includes a speed reducer 51, a driving device 52, a first transmission unit and a second transmission unit. The speed reducer 51 is arranged inside the door leaf 2. The speed reducer 51 includes an input end and two output ends. The output end of the driving device 52 is connected to the input end of the speed reducer 51. The first transmission unit is connected to one output end of the speed reducer 51. The upper part of the first transmission unit is connected with an upper lock head 63. A locking seat 76 is provided on the upper part of the door leaf 2. A lock hole is provided on the upper side frame 12. When the driving device 52 drives the speed reducer 51, the upper lock head 63 can enter or slide out of the locking seat 76. After the upper lock head 63 slides out of the locking seat 76, the upper end of the upper lock head 63 can enter the lock hole of the upper side frame 12. The second transmission unit is connected to one output end of the speed reducer 51. The lower part of the second transmission unit is connected with a lower lock head 73. A lock hole is provided on the lower sill 11. When the driving device 52 drives the speed reducer 51, the lower end of the lower lock head 73 can enter the lock hole of the lower sill 11. The speed reducer 51 is a worm and worm gear speed reducer 51. Position sensors are provided at both the fully locked and fully unlocked positions of the locking mechanism 5. The driving device 52 controls the positions of the upper lock head 63 and the lower lock head 73 through the position sensors to realize the automatic locking and unlocking functions of the airtight door.

[0034] Further, the first transmission unit is located above the speed reducer 51. The first transmission unit includes a vertical connecting rod 53, a first commutator 54, a first horizontal connecting rod 55, a second horizontal connecting rod 56, a first crank 57, a first telescopic rod 58, a third horizontal connecting rod 59, a fourth horizontal connecting rod 60, a second crank 61, and a second telescopic rod 62. The first commutator 54 includes an input end and two output ends. The output end of the speed reducer 51 is connected to the input end of the first commutator 54 through the vertical connecting rod 53. One end of the first horizontal connecting rod 55 is connected to one output end of the first commutator 54, and the other end of the first horizontal connecting rod 55 is connected to one end of the second horizontal connecting rod 56. The other end of the second horizontal connecting rod 56 is connected to one side wall in the width direction of the door leaf 2. One end of the first crank 57 is rotatably connected to the middle of the second horizontal connecting rod 56, and the other end of the first crank 57 is connected to the input end of the first telescopic rod 58. The output end of the first telescopic rod 58 is connected with a locking head 63. One end of the third horizontal connecting rod 59 is connected to the other output end of the first commutator 54, and the other end of the third horizontal connecting rod 59 is connected to one end of the fourth horizontal connecting rod 60. The other end of the fourth horizontal connecting rod 60 is connected to the other side wall in the width direction of the door leaf 2. One end of the second crank 61 is rotatably connected to the middle of the fourth horizontal connecting rod 60, and the other end of the second crank 61 is connected to the input end of the second telescopic rod 62. The output end of the second telescopic rod 62 is connected with a locking head 63. The connection manners between the first commutator 54 and the first horizontal connecting rod 55, and between the first horizontal connecting rod 55 and the second horizontal connecting rod 56 are both hinged connections.

[0035] Further, the second transmission unit is located below the speed reducer 51. The second transmission unit includes a second commutator 64, a fifth horizontal connecting rod 65, a sixth horizontal connecting rod 66, a third crank 67, a third telescopic rod 68, a seventh horizontal connecting rod 69, an eighth horizontal connecting rod 70, a fourth crank 71, and a fourth telescopic rod 72. The second commutator 64 includes an input end and two output ends. The output end of the speed reducer 51 is connected to the input end of the second commutator 64 through a vertical connecting rod 53. One end of the fifth horizontal connecting rod 65 is connected to one output end of the second commutator 64, and the other end of the fifth horizontal connecting rod 65 is connected to one end of the sixth horizontal connecting rod 66. The other end of the sixth horizontal connecting rod 66 is connected to a side wall on one side in the width direction of the door leaf 2. One end of the third crank 67 is rotatably connected to the middle of the sixth horizontal connecting rod 66, and the other end of the third crank 67 is connected to the input end of the third telescopic rod 68. A lower lock head 73 is connected to the output end of the third telescopic rod 68. One end of the seventh horizontal connecting rod 69 is connected to the other output end of the second commutator 64, and the other end of the seventh horizontal connecting rod 69 is connected to one end of the eighth horizontal connecting rod 70. The other end of the eighth horizontal connecting rod 70 is connected to the other side wall in the width direction of the door leaf 2. One end of the fourth crank 71 is rotatably connected to the middle of the eighth horizontal connecting rod 70, and the other end of the fourth crank 71 is connected to the input end of the fourth telescopic rod 72. A lower lock head 73 is connected to the output end of the fourth telescopic rod 72.

[0036] Furthermore, the length of the sealing beam 3 is the same as the width of the door leaf 2. The lower ends of the third telescopic rod 68 and the fourth telescopic rod 72 are both connected to the upper end of the sealing beam 3. A plurality of lower lock heads 73 are provided on one side wall of the sealing beam 3, and the plurality of lower lock heads 73 are evenly distributed on the sealing beam 3. The number of the lower lock heads 73 can be increased or decreased according to actual needs. Second sealing rubber strips 19 are provided on the joint surfaces of the sealing beam 3 and the door leaf 2 and the joint surfaces of the sealing beam 3 and the door frame 1. The second sealing rubber strips 19 are used to seal the joint surfaces of the sealing beam 3 and the door leaf 2 and the door frame 1. By controlling the size of the lower lock heads 73, the compression amount of the second sealing rubber strips 19 can be controlled, so as to ensure the sealing effect. A plurality of limiting components are provided on the sealing beam 3. The limiting components include a limiting groove 31, a limiting post 32 and a limiting screw 33. The limiting groove 31 is provided on the door leaf 2. The upper end of the sealing beam 3 is connected to the lower end of the limiting post 32. A limiting screw 33 is provided on the upper part of the limiting post 32. One end of the limiting screw 33 is located in the limiting groove 31, and one end of the limiting screw 33 can slide in the limiting groove 31. The position of the sealing beam 3 rising or falling can be limited by the limiting components; there is a gap between the lower end of the door leaf 2 and the door frame 1. The sealing beam is linked with the locking mechanism 5. When the driving device 52 drives the speed reducer 51, the sealing beam 3 can rise or fall. When the sealing beam 3 falls, the sealing beam 3 can seal the gap between the door leaf 2 and the door frame 1. At the same time, the lower lock heads 73 can slide into the lock holes on the lower sill 11. The sealing beam 3 is linked with the locking mechanism 5. During the opening or closing of the lock, the bottom of the door leaf 2 is sealed with the road surface, without the need for separate operation by personnel, ensuring unobstructed passage for vehicles and personnel.

[0037] Furthermore, as Figure 3 shown, the driving device 52 includes: an engine 74, a chain 75, a first sprocket and a second sprocket. The first sprocket is arranged at the input end of the speed reducer 51, and the second sprocket is arranged at the output end of the engine 74. The first sprocket and the second sprocket are connected by the chain 75; the surface of the door leaf 2 close to the inside of the tunnel is the inner surface, and the surface of the door leaf 2 far from the inside of the tunnel is the outer surface. The airtight blast door further includes a first handwheel 77 and a second handwheel 78. The first handwheel 77 and the second handwheel 78 are both coaxially arranged with the first sprocket. The first handwheel 77 is arranged on one side of the outer surface of the door leaf 2, and the second handwheel 78 is arranged on one side of the inner surface of the door leaf 2; the engine 74 is an electric engine. Automatic control is realized by using the engine 74 as the driving source. The locking mechanism 5 can be manually started by either the first handwheel 77 or the second handwheel 78.

[0038] Furthermore, the blast-proof airtight door further includes a position locking device 8. The position locking device 8 includes a locking bolt 81, a second electric push rod 82, a first guiding support 83 and a locking support 84. The second electric push rod 82 and the first guiding support 83 are both installed on the door leaf 2. The output end of the second electric push rod 82 is connected to the upper end of the locking bolt 81. The locking support 84 is cast on the floor of the wave-facing surface of the door leaf 2. A lock hole for inserting the locking bolt 81 is provided on the locking support 84. After the lower end of the locking bolt 81 passes through the first guiding support 83, it can enter the lock hole of the locking support 84. When the door leaf 2 is fully opened, the locking bolt 81 is driven by the second electric push rod 82 to insert into the lock hole of the locking support 84, completing the locking of the fully opened position of the door leaf 2, so that the door leaf 2 can be fixed at the fully opened position. The second electric push rod 82 is driven by a second motor. Compared with the hydraulic drive scheme, it has the advantages of simple system, convenient maintenance and low cost.

[0039] Furthermore, the blast-proof airtight door further includes a support device 9. The support device 9 includes a roller 91, a fixed support 92 and a second guiding support 93. The fixed support 92 is provided on one side wall of the door leaf 2. The roller 91 is installed on the fixed support 92. The second guiding support 93 is cast on the floor of the wave-facing surface of the door leaf 2. The position of the second guiding support 93 corresponds to the position when the door leaf 2 is fully opened. A guiding plate 94 and a supporting plate 95 are provided on the upper surface of the second guiding support 93. The upper surface of the guiding plate 94 is an inclined surface, and the upper surface of the supporting plate 95 is a flat surface. When the door leaf 2 is close to the fully opened position, the roller 91 can roll onto the supporting plate 95 under the guidance of the guiding plate 94. When the door leaf 2 is in the fully opened position, the roller 91 can provide support for the door leaf 2 to ensure the stability of the door leaf 2.

[0040] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0041] A flat-opening blast-proof airtight door driven by electricity without a threshold. The airtight door has the characteristics of strong driving ability, compact structure and convenient maintenance. The bottom of the airtight door adopts a design without a threshold and a trench. The liftable sealing beam 3 is linked with the opening and closing process of the locking mechanism 5, and does not require separate operation by personnel, and can realize unobstructed passage for vehicles and personnel. The opening and closing device 4, the locking mechanism 5 and the position locking device 8 are all driven by motors. Compared with the hydraulic drive scheme, it has the advantages of simple system, convenient maintenance and low cost.

[0042] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A threshold-free electrically driven flat-opening protective airtight door, the protective airtight door is arranged at the two ends of the tunnel, characterized in that: The blast-proof airtight door includes: A doorframe, which is cast in the doorframe wall; A door leaf, which is hinged to the doorframe; A locking mechanism, which is connected to the door leaf. After the door leaf is closed, the locking mechanism can fix the door leaf to the doorframe; A sealing beam, which is arranged at the bottom of the door leaf and is connected to the locking mechanism. The sealing beam can seal between the bottom of the door leaf and the doorframe.

2. The flush-type blast-proof airtight door driven by electricity without a threshold according to claim 1, characterized in that The blast-proof airtight door further includes an opening and closing device, which includes a first electric push rod, a first support and a second support. The first support is arranged on the door leaf, the second support is arranged on the doorframe, the fixed end of the first electric push rod is hinged to the second support, and the output end of the first electric push rod is hinged to the first support. By controlling the pushing length of the first electric push rod, the opening angle of the door leaf relative to the doorframe can be controlled; The first electric push rod is driven by a first motor.

3. The flush-type blast-proof airtight door driven by electricity without a threshold according to claim 1, characterized in that The doorframe includes a lower sill, an upper frame and side frames, and anchoring hooks are arranged on the outer periphery of the doorframe; A door shaft is vertically arranged on one of the side frames, and a hinge is installed on the door shaft. The door leaf is hinged to the door shaft through the hinge; First sealing rubber strips are arranged on the joint surfaces of the upper frame and the side frames with the door leaf; The upper surface of the lower sill is flush with the ground.

4. The flush-type blast-proof airtight door driven by electricity without a threshold according to claim 3, characterized in that The locking mechanism includes a reducer, a driving device, a first transmission unit and a second transmission unit. The reducer is arranged inside the door leaf. The reducer includes an input end and two output ends. The output end of the driving device is connected to the input end of the reducer. The first transmission unit is connected to one output end of the reducer. An upper lock head is connected to the upper part of the first transmission unit. A locking seat is arranged on the upper part of the door leaf. A lock hole is arranged on the upper frame. When the driving device drives the reducer, the upper lock head can enter or slide out of the locking seat. After the upper lock head slides out of the locking seat, the upper end of the upper lock head can enter the lock hole of the upper frame; The second transmission unit is connected to one output end of the reducer. A lower lock head is connected to the lower part of the second transmission unit. A lock hole is arranged on the lower sill. When the driving device drives the reducer, the lower end of the lower lock head can enter the lock hole of the lower sill; The reducer is a worm and worm gear reducer, and position sensors are arranged at both the fully locked and fully unlocked positions of the locking mechanism.

5. The flush-type blast-proof airtight door driven by electricity without a threshold according to claim 4, characterized in that The first transmission unit includes a vertical connecting rod, a first commutator, a first horizontal connecting rod, a second horizontal connecting rod, a first crank, a first telescopic rod, a third horizontal connecting rod, a fourth horizontal connecting rod, a second crank and a second telescopic rod, the first commutator includes an input end and two output ends, the output end of the reducer is connected to the input end of the first commutator through the vertical connecting rod, one end of the first horizontal connecting rod is connected to an output end of the first commutator, the other end of the first horizontal connecting rod is connected to one end of the second horizontal connecting rod, the other end of the second horizontal connecting rod is connected to a side wall in the width direction of the door leaf, one end of the first crank is rotatably connected to the middle part of the second horizontal connecting rod, the other end of the first crank is connected to the input end of the first telescopic rod, and the output end of the first telescopic rod is connected to a locking head; One end of the third horizontal connecting rod is connected to the other output end of the first commutator, the other end of the third horizontal connecting rod is connected to one end of the fourth horizontal connecting rod, the other end of the fourth horizontal connecting rod is connected to the other side wall in the width direction of the door leaf, one end of the second crank is rotatably connected to the middle part of the fourth horizontal connecting rod, the other end of the second crank is connected to the input end of the second telescopic rod, and the output end of the second telescopic rod is connected to a locking head.

6. The threshold-free electrically driven side-opening protective airtight door according to claim 5, characterized in that: The second transmission unit includes a second commutator, a fifth horizontal connecting rod, a sixth horizontal connecting rod, a third crank, a third telescopic rod, a seventh horizontal connecting rod, an eighth horizontal connecting rod, a fourth crank and a fourth telescopic rod, the second commutator includes an input end and two output ends, the output end of the reducer is connected to the input end of the second commutator through the vertical connecting rod, one end of the fifth horizontal connecting rod is connected to an output end of the second commutator, the other end of the fifth horizontal connecting rod is connected to one end of the sixth horizontal connecting rod, the other end of the sixth horizontal connecting rod is connected to a side wall in the width direction of the door leaf, one end of the third crank is rotatably connected to the middle part of the sixth horizontal connecting rod, the other end of the third crank is connected to the input end of the third telescopic rod, and the output end of the third telescopic rod is connected to the lower lock head; One end of the seventh horizontal connecting rod is connected to the other output end of the second commutator, the other end of the seventh horizontal connecting rod is connected to one end of the eighth horizontal connecting rod, the other end of the eighth horizontal connecting rod is connected to the other side wall in the width direction of the door leaf, one end of the fourth crank is rotatably connected to the middle part of the eighth horizontal connecting rod, the other end of the fourth crank is connected to the input end of the fourth telescopic rod, and the output end of the fourth telescopic rod is connected to the lower lock head.

7. The threshold-free electrically driven side-opening protective airtight door according to claim 6, characterized in that: The length of the sealing beam is consistent with the width of the door leaf, the lower ends of the third telescopic rod and the fourth telescopic rod are both connected to the upper end of the sealing beam, a plurality of lower lock heads are provided on one side wall of the sealing beam, and the fitting surface of the sealing beam and the door leaf and the fitting surface of the sealing beam and the door frame are both provided with a second sealing strip; The sealing beam is provided with a plurality of limiting components, and the limiting components include a limiting groove, a limiting column and a limiting screw. The limiting groove is provided on the door leaf, the upper end of the sealing beam is connected to the lower end of the limiting column, the upper part of the limiting column is provided with the limiting screw, and one end of the limiting screw is located in the limiting groove; There is a gap between the lower end of the door leaf and the door frame. When the driving device drives the reducer, the sealing beam can rise or fall. When the sealing beam falls, the sealing beam can seal the gap between the door leaf and the door frame. At the same time, the lower lock head can slide into the lock hole on the lower sill.

8. The threshold-free electrically driven flat-opening protective airtight door according to claim 5, characterized in that: The driving device comprises: an engine, a chain, a first sprocket and a second sprocket, wherein the first sprocket is arranged at the input end of the reducer, the second sprocket is arranged at the output end of the engine, and the first sprocket and the second sprocket are connected by a chain; The side of the door leaf close to the interior of the tunnel is the inner surface, and the side of the door leaf away from the interior of the tunnel is the outer surface. The door leaf further comprises a first hand wheel and a second hand wheel, wherein the first hand wheel and the second hand wheel are both coaxially arranged with the first sprocket, the first hand wheel is arranged on one side of the outer surface of the door leaf, and the second hand wheel is arranged on one side of the inner surface of the door leaf; The engine is an electric engine.

9. The threshold-free electrically driven side-opening protective airtight door according to claim 1, characterized in that: The protective airtight door further comprises a position locking device, which comprises a locking bolt, a second electric push rod, a first guide support and a locking support, wherein the second electric push rod and the first guide support are both mounted on the door leaf, an output end of the second electric push rod is connected to an upper end of the locking bolt, the locking support is cast on the floor, a locking hole for inserting the locking bolt is provided on the locking support, and the lower end of the locking bolt can enter the locking hole of the locking support after passing through the first guide support; The second electric push rod is driven by a second motor; When the door leaf is fully opened, the locking pin is driven by the second electric push rod to be inserted into the lock hole of the locking support to complete the locking of the door leaf in the fully open position.

10. The threshold-free electrically driven flat-opening protective airtight door according to claim 1, characterized in that: The blast-proof airtight door further includes a support device, and the support device includes a roller, a fixed support, and a second guiding support. The fixed support is arranged on one side wall of the door leaf, the roller is installed on the fixed support, the second guiding support is cast on the floor, and the position of the second guiding support corresponds to the position when the door leaf is fully opened; The upper surface of the second guiding support is provided with a guiding plate and a supporting plate. The upper surface of the guiding plate is an inclined surface, and the upper surface of the supporting plate is a flat surface. When the door leaf approaches the fully opened position, the roller can roll onto the supporting plate under the guidance of the guiding plate.

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