CN215056533U

CN215056533U - Lifting type doorsill civil air defense door

Info

Publication number: CN215056533U
Application number: CN202120172576.1U
Authority: CN
Inventors: 龚珙娣
Original assignee: Shanghai Minggu Civil Defense Equipment Co ltd
Current assignee: Shanghai Minggu Civil Defense Equipment Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-12-07
Anticipated expiration: 2031-01-21

Abstract

The utility model relates to a over-and-under type threshold people's air defense door, belong to the technical field of people's air defense door, which comprises a base, fix the door frame on the base, the door leaf with door frame articulated, threshold and actuating mechanism of setting at the door leaf lower extreme, the holding tank has been seted up on the base, actuating mechanism includes the first pivot of rotating the connection with the door frame, rotate the second pivot of being connected and with first pivot vertically with the door frame, the third pivot of rotating the connection just with the holding tank in the setting tank, the first lead screw of bottom surface threaded connection with the threshold, the first transmission assembly of setting between first pivot and second pivot, the second transmission assembly of setting between second pivot and third pivot and the third transmission assembly of setting between third pivot and first lead screw, be fixed with its pivoted hand wheel of drive in the first pivot. The civil air defense door of this application need not electric power, through rotating the hand wheel, can realize the lift of threshold, runs into the outage condition, still can realize the lift of threshold, has the wide effect of application scope.

Description

Lifting type doorsill civil air defense door

Technical Field

The application relates to the technical field of civil air defense doors, in particular to a lifting type threshold civil air defense door.

Background

The civil air defense door is a door at the entrance and exit of civil protection engineering, has more distinct classification, and comprises various civil air defense devices such as common single-leaf and double-leaf protective airtight doors, movable threshold single-leaf and double-leaf protective airtight doors and the like. The common single-fan and double-fan protective sealing structure is simple, reliable in operation and convenient to maintain, but the doorsill is not beneficial to vehicle access. The single-leaf and double-leaf protective airtight doors of the movable door sill are not provided with the door sill at ordinary times, the ground is smooth, personnel and vehicles can pass through the doors conveniently, and the door sill is arranged when needed so as to meet the requirements of protection and airtight functions.

The correlation technique is chinese utility model patent that the bulletin number is CN209510091U discloses an over-and-under type threshold people's air defense door, two door leafs of two inward divisions in door frame, the door sill that is located the liftable of door leaf below and be located the door sill below and be used for holding the chamber that holds of door sill hold the intracavity and be provided with elevating gear, elevating gear is including locating the first lead screw of door sill bottom and drive first lead screw pivoted motor.

In view of the above related technologies, the inventor thinks that the motor drives the first lead screw to rotate, and although the lifting of the threshold can be quickly realized, when the line is powered off due to an emergency, the motor cannot be started, so that the threshold cannot be lifted, and the defect that the application range is narrow exists.

SUMMERY OF THE UTILITY MODEL

In order to enlarge the application scope of the civil air defense door, the lifting type threshold civil air defense door is not required to be driven by electric power.

The application provides a lifting type threshold civil air defense door adopts following technical scheme:

a lifting type doorsill civil defense door comprises a base, a door frame fixed on the base, a door leaf hinged with the door frame, a doorsill arranged at the lower end of the door leaf and a driving mechanism used for driving the doorsill to lift, wherein a containing groove used for containing the doorsill is formed in the base; a rotating cavity for the second rotating shaft to rotate is formed in the door frame, and the rotating cavity is communicated with the accommodating groove; the first screw rods are respectively positioned on the bottom surfaces of the two ends of the doorsill, and the door frame is further provided with a locking assembly for locking the first rotating shaft.

By adopting the technical scheme, the hand wheel is rotated to drive the first rotating shaft to rotate, the second rotating shaft and the first rotating shaft synchronously rotate under the action of the first transmission assembly, the third rotating shaft and the second rotating shaft synchronously rotate under the action of the second transmission assembly, and the first screw rod and the third rotating shaft synchronously rotate under the action of the third transmission assembly. When the first screw rod rotates, the doorsill in threaded connection with the first screw rod cannot rotate, and can only slide along the axial direction of the first screw rod to realize lifting.

Preferably, the first transmission assembly comprises a first worm fixedly sleeved on the first rotating shaft and a first worm wheel fixedly sleeved on the second rotating shaft and meshed with the first worm.

By adopting the technical scheme, the first rotating shaft rotates to drive the first worm to rotate, the first worm drives the first worm wheel to rotate, and the first worm wheel drives the second rotating shaft to rotate, so that the first rotating shaft and the second rotating shaft synchronously rotate.

Preferably, the second transmission assembly comprises a second worm fixedly sleeved on the lower end of the second rotating shaft and a second worm wheel fixedly sleeved on the third rotating shaft.

By adopting the technical scheme, the second rotating shaft rotates to drive the second worm to rotate, the second worm drives the second worm wheel to rotate, and the second worm wheel drives the third rotating shaft to rotate, so that the second rotating shaft and the third rotating shaft can synchronously rotate.

Preferably, the third transmission assembly comprises a third worm fixedly sleeved on the third rotating shaft and a third worm wheel fixedly sleeved on the first screw rod and meshed with the third worm.

By adopting the technical scheme, the third rotating shaft rotates to drive the third worm to rotate, and the third worm wheel rotates to drive the first screw rod to rotate under the matching of the third worm and the third worm wheel, so that the threshold is driven to lift.

Preferably, the locking assembly comprises a fixed plate fixed on the door frame, an inserted link slidably connected with the fixed plate, a spring sleeved on the inserted link, a limiting ring fixedly sleeved on the inserted link, and a limiting plate fixed on the inserted link, the first rotating shaft is provided with a jack in plug fit with the inserted link, and the axial direction of the inserted link is perpendicular to the axial direction of the first rotating shaft; the length of the spring is smaller than that of the spring in a natural state, one end of the spring is fixed with the limiting ring, and the other end of the spring is fixed with the fixing plate.

Through adopting above-mentioned technical scheme, the spring is in compression state, and the first pivot of directional all the time is in the elasticity direction of spring, and under the elasticity effect of spring, the inserted bar inserts in the jack that first pivot was seted up to realize the locking of first pivot, need rotate first pivot on, to the direction pulling inserted bar of keeping away from the jack, make the inserted bar break away from with the jack can.

Preferably, the door leaf comprises a first door and a second door, and the first door and the second door are locked by a connecting assembly.

Through adopting above-mentioned technical scheme, people's air defense door sets up the double leaf, and the space of passing through is big, can pass through oversize vehicle.

Preferably, the connecting assembly comprises a bolt in sliding connection with the first door and an inserting plate which is fixed on the second door and is in inserting connection with the bolt, and the first door is provided with a driving assembly for driving the bolt to slide.

By adopting the technical scheme, the driving component drives the plug pin to slide, and when the civil air defense door needs to be closed, the driving component drives the plug pin to slide towards the direction close to the plug board until the plug pin is inserted into the plug board; when the civil air defense door needs to be opened, the driving component drives the bolt to slide towards the direction far away from the inserting plate until the bolt is separated from the inserting plate.

Preferably, the driving assembly comprises a rotary table which penetrates through the first door and is rotatably connected with the first door, a second screw rod which is rotatably connected with the first door, a first bevel gear which is fixed on an output shaft of the rotary table, and a second bevel gear which is fixedly sleeved on the second screw rod and is meshed with the first bevel gear, the axial direction of the second screw rod is perpendicular to the height direction of the first door, a connecting rod is in threaded connection with the second screw rod, and the bolt is fixed on the connecting rod.

Through adopting above-mentioned technical scheme, rotate the carousel, the first bevel gear of carousel drive rotates, and under the transmission of second bevel gear, the second lead screw rotates, and the connecting rod with second lead screw threaded connection can't rotate, only can slide along the axial of second lead screw, and the connecting rod drives the bolt and slides to the direction of being close to or keeping away from the picture peg.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the civil air defense door can lift the threshold by rotating the hand wheel without electric power, can still lift the threshold in case of power failure, and has the effect of wide application range;

2. the locking assembly is arranged, and under the action of the elastic force of the spring, the inserted rod is inserted into the insertion hole formed in the first rotating shaft, so that the first rotating shaft is locked;

3. when the civil air defense door needs to be closed, the driving assembly drives the plug pin to slide towards the direction close to the plug board until the plug pin is inserted into the plug board; when the civil air defense door needs to be opened, the driving component drives the bolt to slide towards the direction far away from the inserting plate until the bolt is separated from the inserting plate.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a connection assembly according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of an embodiment of the present application.

Fig. 4 is an enlarged view at a in fig. 1.

Description of reference numerals: 1. a base; 11. accommodating grooves; 111. a fixed block; 2. a door frame; 21. a rotation chamber; 3. a door leaf; 31. a first door; 311. connecting blocks; 32. a second door; 33. a hinge; 34. a handle; 4. a threshold; 5. a drive mechanism; 51. a first rotating shaft; 511. a hand wheel; 512. a jack; 52. a second rotating shaft; 53. a third rotating shaft; 54. a first lead screw; 55. a first transmission assembly; 551. a first worm; 552. a first worm gear; 56. a second transmission assembly; 561. a second worm; 562. a second worm gear; 57. a third transmission assembly; 571. a third worm; 572. a third worm gear; 6. a connecting assembly; 61. a bolt; 62. inserting plates; 621. a pin hole; 7. a drive assembly; 71. a turntable; 72. a second lead screw; 73. a first bevel gear; 74. a second bevel gear; 75. a connecting rod; 8. a locking assembly; 81. a fixing plate; 82. inserting a rod; 83. a spring; 84. a limiting ring; 85. and a limiting plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses over-and-under type threshold people's air defense door. Referring to fig. 1 and 3, the elevating type threshold civil air defense door comprises a base 1, a door frame 2, a door leaf 3, a threshold 4 and a driving mechanism 5. Base 1 level sets up, and base 1's cross section is the rectangle, and base 1 is pre-buried at the subaerial and base 1's up end and ground flush, offers the holding tank 11 that is used for placing threshold 4 on base 1, and the orientation of seting up of holding tank 11 is unanimous with base 1's length direction. The cross section of the threshold 4 is rectangular and the axial direction of the threshold 4 coincides with the axial direction of the base 1.

As shown in fig. 1-2, the door frame 2 is an inverted U-shape, the lower end of the door frame 2 is fixed on the upper end surface of the base 1, the door leaf 3 includes a first door 31 and a second door 32, the first door 31 and the second door 32 are both hinged to the door frame 2 through hinges 33, and the first door 31 and the second door 32 are both fixed with handles 34. The first door 31 and the second door 32 are locked by a connecting assembly 6, the connecting assembly 6 comprises a bolt 61 and an insert plate 62, the cross section of the bolt 61 is rectangular, the axial direction of the bolt 61 is perpendicular to the height direction of the first door 31, and the bolt 61 is connected with the first door 31 in a sliding mode. The length direction of the insertion plate 62 is consistent with the height direction of the second door 32, a pin hole 621 which is matched with the plug pin 61 in an inserted manner is formed in the insertion plate 62, and the pin hole 621 penetrates through the insertion plate 62.

As shown in fig. 1-2, a driving assembly 7 for driving the sliding pin 61 to slide is disposed on the first door 31, and the driving assembly 7 includes a rotating disc 71, a second screw 72, a first bevel gear 73, a second bevel gear 74, and a connecting rod 75. The rotating disc 71 penetrates through the first door 31 and is rotatably connected with the first door 31, two connecting blocks 311 are fixed on the end face, away from the rotating disc 71, of the first door 31, the two connecting blocks 311 are arranged, the second screw rod 72 penetrates through the connecting blocks 311 and is rotatably connected with the connecting blocks 311, and the axial direction of the second screw rod 72 is consistent with the axial direction of the bolt 61. The first bevel gear 73 is fixedly sleeved on the output shaft of the turntable 71, the second bevel gear 74 is fixedly sleeved on the second screw 72, and the first bevel gear 73 is meshed with the second bevel gear 74. The axial direction of the connecting rod 75 is vertical to the axial direction of the second screw rod 72, the second screw rod 72 penetrates through the connecting rod 75 and is in threaded fit with the connecting rod 75, the bolts 61 are fixed on the side wall of the connecting rod 75, and three bolts 61 are uniformly arranged in the length direction of the connecting rod 75. The rotating disc 71 is rotated, the second lead screw 72 rotates under the transmission of the first bevel gear 73 and the second bevel gear 74, the second lead screw 72 drives the connecting rod 75 to drive the plug pin 61 to slide, when the civil air defense door needs to be closed, the plug pin 61 is driven to slide in the direction close to the plug board 62, and when the civil air defense door needs to be opened, the plug pin 61 is driven to slide in the direction far away from the plug board 62.

As shown in fig. 3-4, the driving mechanism 5 includes a first rotating shaft 51, a second rotating shaft 52, a third rotating shaft 53, a first lead screw 54, a first transmission assembly 55, a second transmission assembly 56, and a third transmission assembly 57. The first rotating shaft 51 penetrates through the door frame 2 and is rotatably connected with the side wall of the door frame 2, the axial direction of the first rotating shaft 51 is consistent with the axial direction of an output shaft of the rotating disc 71, and a hand wheel 511 for driving the first rotating shaft 51 to rotate is fixed on the first rotating shaft 51. The door frame 2 is internally provided with a rotating cavity 21, the opening direction of the rotating cavity 21 is consistent with the height direction of the door frame 2, and the rotating cavity 21 is communicated with the accommodating groove 11. The second rotating shaft 52 is located in the rotating cavity 21, the axial direction of the second rotating shaft 52 is perpendicular to the axial direction of the first rotating shaft 51, and the upper end and the lower end of the second rotating shaft 52 are rotatably connected with the inner wall of the top end and the inner wall of the bottom end of the rotating cavity 21 respectively. The axial direction of third pivot 53 is unanimous with the length direction of holding tank 11, is fixed with two fixed blocks 111 in the holding tank 11, and the both ends of third pivot 53 are connected with fixed block 111 rotation respectively. The axial direction of the first screw rods 54 is perpendicular to the axial direction of the third rotating shaft 53, two first screw rods 54 are arranged, the two first screw rods 54 are respectively in threaded connection with the bottom surfaces of the two ends of the threshold 4, and the lower ends of the first screw rods 54 are rotatably connected with the bottoms of the accommodating grooves 11.

As shown in fig. 3, the first transmission assembly 55 includes a first worm 551 and a first worm wheel 552, the first worm 551 is fixedly sleeved on the first rotating shaft 51, the first worm wheel 552 is fixedly sleeved on the upper end of the second rotating shaft 52, and the first worm wheel 552 is meshed with the first worm 551. When the first rotating shaft 51 is driven to rotate, the second rotating shaft 52 and the first rotating shaft 51 realize synchronous rotation under the transmission of the first worm 551 and the first worm wheel 552.

As shown in fig. 3, the second transmission assembly 56 includes a second worm 561 and a second worm wheel 562, the second worm 561 is fixedly sleeved on the lower end of the second rotating shaft 52, the second worm wheel 562 is fixedly sleeved on one end of the third rotating shaft 53 close to the second rotating shaft 52, and the second worm wheel 562 is meshed with the second worm 561. The second rotating shaft 52 rotates, and the third rotating shaft 53 and the second rotating shaft 52 rotate synchronously under the transmission of the second worm 561 and the second worm wheel 562.

As shown in fig. 3, the third transmission assembly 57 includes two third worms 571 and two third worm wheels 572, the two third worms 571 are fixedly sleeved on the third rotating shaft 53, the third worm wheels 572 are respectively fixedly sleeved on the first lead screw 54, and the third worm wheels 572 are engaged with the third worm 571. The third rotating shaft 53 rotates, and the first lead screw 54 and the third rotating shaft 53 rotate synchronously under the transmission of the third worm 571 and the third worm wheel 572.

As shown in fig. 4, a locking assembly 8 for locking the first rotating shaft 51 is disposed on the door frame 2, the locking assembly 8 includes a fixing plate 81, an inserting rod 82, a spring 83, a limiting ring 84 and a limiting plate 85, the fixing plate 81 is fixed on the door frame 2, the inserting rod 82 passes through the fixing plate 81 and is slidably connected with the fixing plate 81, the axial direction of the inserting rod 82 is perpendicular to the axial direction of the first rotating shaft 51, the limiting ring 84 is fixedly sleeved on the inserting rod 82, the limiting plate 85 is fixed on one end of the inserting rod 82 away from the first rotating shaft 51, and the cross-sectional area of the limiting plate 85 is greater than that of the inserting rod 82. The spring 83 is sleeved on the inserted rod 82, the axial direction of the spring 83 is consistent with the axial direction of the inserted rod 82, one end of the spring 83 is fixed with the fixing plate 81, the other end of the spring 83 is fixed with the limiting ring 84, the spring 83 is always in a compression state, and the elastic direction of the spring 83 always points to the first rotating shaft 51. The side wall of the first rotating shaft 51 is provided with a plurality of insertion holes 512 which are matched with the insertion rods 82 in an inserted manner, the insertion holes 512 penetrate through the side wall of the first rotating shaft 51, and the insertion holes 512 are uniformly arranged in the circumferential direction of the first rotating shaft 51. Under the elastic force of the spring 83, the insertion rod 82 is always inserted into the insertion hole 512, and when the first rotating shaft 51 needs to be rotated, the insertion rod 82 slides in the direction away from the insertion hole 512, and when the insertion rod 82 is separated from the insertion hole 512, the first rotating shaft 51 can be rotated again.

The implementation principle of over-and-under type threshold people's air defense door of the embodiment of this application does: the rotating handwheel 511 drives the first rotating shaft 51 to rotate, the second rotating shaft 52 and the first rotating shaft 51 rotate synchronously under the action of the first transmission assembly 55, the third rotating shaft 53 and the second rotating shaft 52 rotate synchronously under the action of the second transmission assembly 56, and the first screw 54 and the third rotating shaft 53 rotate synchronously under the action of the third transmission assembly 57. When the first screw 54 rotates, the threshold 4 screwed with the first screw 54 cannot rotate and can only slide along the axial direction of the first screw 54, thereby realizing the lifting of the threshold 4. The civil air defense door of this application need not electric power, through rotating hand wheel 511, can realize threshold 4's lift, meets the outage condition, still can realize threshold 4's lift, has the wide effect of application scope.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a over-and-under type threshold people's air defense door which characterized in that: the lifting device comprises a base (1), a door frame (2) fixed on the base (1), a door leaf (3) hinged to the door frame (2), a doorsill (4) arranged at the lower end of the door leaf (3) and a driving mechanism (5) used for driving the doorsill (4) to lift, wherein a containing groove (11) used for containing the doorsill (4) is formed in the base (1), the driving mechanism (5) comprises a first rotating shaft (51) rotatably connected with the door frame (2), a second rotating shaft (52) rotatably connected with the door frame (2) and vertical to the first rotating shaft (51), a third rotating shaft (53) arranged in the containing groove (11) and rotatably connected with the containing groove (11), a first screw rod (54) in threaded connection with the bottom surface of the doorsill (4), a first transmission assembly (55) arranged between the first rotating shaft (51) and the second rotating shaft (52), a second transmission assembly (56) arranged between the second rotating shaft (52) and the third rotating shaft (53) and a third transmission assembly (56) arranged at the third rotating shaft A third transmission assembly (57) between the shaft (53) and the first screw rod (54), wherein a hand wheel (511) for driving the first rotating shaft (51) to rotate is fixed on the first rotating shaft; a rotating cavity (21) for the second rotating shaft (52) to rotate is formed in the door frame (2), and the rotating cavity (21) is communicated with the accommodating groove (11); the number of the first screw rods (54) is two, the two first screw rods (54) are respectively located on the bottom surfaces of two ends of the doorsill (4), and a locking assembly (8) used for locking the first rotating shaft (51) is further arranged on the door frame (2).

2. The elevating threshold civil air defense door of claim 1, wherein: the first transmission assembly (55) comprises a first worm (551) fixedly sleeved on the first rotating shaft (51) and a first worm wheel (552) fixedly sleeved on the second rotating shaft (52) and meshed with the first worm (551).

3. The elevating threshold civil air defense door of claim 1, wherein: the second transmission assembly (56) comprises a second worm (561) fixedly sleeved at the lower end of the second rotating shaft (52) and a second worm wheel (562) fixedly sleeved on the third rotating shaft (53).

4. The elevating threshold civil air defense door of claim 1, wherein: the third transmission assembly (57) comprises a third worm (571) fixedly sleeved on the third rotating shaft (53) and a third worm wheel (572) fixedly sleeved on the first screw rod (54) and meshed with the third worm (571).

5. The elevating threshold civil air defense door of claim 1, wherein: the locking assembly (8) comprises a fixing plate (81) fixed on the door frame (2), an insertion rod (82) in sliding connection with the fixing plate (81), a spring (83) sleeved on the insertion rod (82), a limiting ring (84) fixedly sleeved on the insertion rod (82) and a limiting plate (85) fixed on the insertion rod (82), wherein a jack (512) in plug-in fit with the insertion rod (82) is formed in the first rotating shaft (51), and the axial direction of the insertion rod (82) is perpendicular to the axial direction of the first rotating shaft (51); the length of the spring (83) is smaller than that of the spring in a natural state, one end of the spring (83) is fixed with the limiting ring (84), and the other end of the spring (83) is fixed with the fixing plate (81).

6. The elevating threshold civil air defense door of claim 1, wherein: the door leaf (3) comprises a first door (31) and a second door (32), and the first door (31) and the second door (32) are locked through a connecting assembly (6).

7. The elevating threshold civil air defense door of claim 6, wherein: the connecting assembly (6) comprises a bolt (61) in sliding connection with the first door (31) and an inserting plate (62) which is fixed on the second door (32) and is in inserting connection with the bolt (61), and a driving assembly (7) used for driving the bolt (61) to slide is arranged on the first door (31).

8. The elevating threshold civil air defense door of claim 7, wherein: the driving assembly (7) comprises a rotary disc (71) which penetrates through the first door (31) and is rotatably connected with the first door (31), a second screw rod (72) which is rotatably connected with the first door (31), a first bevel gear (73) fixed on an output shaft of the rotary disc (71), and a second bevel gear (74) which is fixedly sleeved on the second screw rod (72) and is meshed with the first bevel gear (73), the axial direction of the second screw rod (72) is vertical to the height direction of the first door (31), a connecting rod (75) is in threaded connection with the second screw rod (72), and the bolt (61) is fixed on the connecting rod (75).