CN112282510B

CN112282510B - People's air defense door blocking device

Info

Publication number: CN112282510B
Application number: CN202011156956.2A
Authority: CN
Inventors: 徐友明
Original assignee: Anhui Longhong Civil Air Defense Engineering Protection Equipment Co ltd
Current assignee: Anhui Longhong Civil Air Defense Engineering Protection Equipment Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-27
Anticipated expiration: 2040-10-26
Also published as: CN112282510A

Abstract

The application relates to a civil air defense door locking device, which comprises a locking mechanism, wherein the locking mechanism comprises a transmission shaft which is rotatably arranged in a door leaf; both ends of the transmission shaft are fixed with transmission gears; a driving rack meshed with the transmission gear is arranged in the door leaf; one end of the transmission rack is provided with a lock head which is in inserted fit with the door frame; a worm wheel is arranged in the middle of the transmission shaft; a driving shaft is rotatably arranged on the door leaf; a worm meshed with the worm wheel is arranged on the driving shaft; the door leaf is provided with a sealing mechanism; the sealing mechanism comprises a rotating shaft rotatably arranged on the outer side of the door leaf and a sealing beam arranged on the rotating shaft; the driving shaft is connected with the rotating shaft through a synchronous assembly; the synchronous component comprises a first belt wheel arranged on the driving shaft, a connecting shaft rotationally arranged on the door leaf, a second belt wheel arranged on the connecting shaft and a synchronous belt sleeved on the first belt wheel and the second belt wheel; one end of the connecting shaft is provided with a first bevel gear; a second bevel gear meshed with the first bevel gear is arranged on the rotating shaft. This application has the effect that improves people's air defense door locking efficiency.

Description

People's air defense door blocking device

Technical Field

The application relates to the field of civil air defense doors, in particular to a locking device of a civil air defense door.

Background

People's air defense is also called civil defense, which is an international common word and is a public mobilization and organization for government, and takes measures of air attack prevention, disaster resistance and relief, implements rescue actions, and prevents and lightens the activities of disaster damage, and the people's air defense door belongs to civil defense protection equipment and needs to meet the requirements of protection and sealing functions.

At present, chinese patent with publication number CN103266838A discloses a doorsill-free civil air defense door at entrance and exit, which comprises a door leaf, a door frame, a lock and a hinge, wherein a sealing beam and a sealing beam lifting mechanism are arranged at the lower part of the door leaf, the sealing beam is a turnover sealing beam, and comprises a hinged seat fixedly connected to the back of the door leaf, a rocker hinged to the hinged seat, a turnover beam fixedly connected to the rocker, a ground sealing member fixed on the turnover beam and matched with the ground, and a door leaf sealing member fixed on the turnover beam and matched with the door leaf, wherein the sealing beam lifting mechanism comprises a reverse L-shaped vertical connecting rod, a crank, a shaft seat, a bearing, a sealing beam lifting mechanism transmission shaft, a reversing transmission and a sealing beam lifting handle.

Aiming at the related technologies, the inventor thinks that the locking hand wheel is used for controlling the upper lock head and the lower lock head to move up and down so as to lock and unlock the civil air defense door, the sealing of the doorsill needs to be carried out by rotating the lifting handle to control the overturning of the overturning beam to seal the civil air defense door, the sealing of the locking door and the doorsill needs to be carried out by two operations, and the process is complicated.

Disclosure of Invention

In order to carry out synchro control to tapered end and sealed roof beam for the sake of convenience, improve the locking efficiency of people's air defense door, this application provides a people's air defense door blocking device.

The application provides a people's air defense door blocking device adopts following technical scheme:

a civil air defense door locking device comprises a locking mechanism arranged on a door leaf, wherein the locking mechanism comprises a transmission shaft rotatably arranged in the door leaf; the transmission shafts are horizontally arranged, and transmission gears are fixed on the transmission shafts at positions close to the two ends; the door leaf is internally provided with a driving rack which is meshed with the driving gear on both sides of the driving gear; the ends, which are opposite to the two transmission racks and meshed with the two sides of the transmission gear, of the two transmission racks are provided with lock heads which are in splicing fit with the door frame; a worm wheel is arranged in the middle of the transmission shaft; the door leaf is rotatably provided with a driving shaft; a worm meshed with the worm wheel is arranged on the driving shaft; the door leaf is provided with a sealing mechanism; the sealing mechanism comprises a rotating shaft rotatably arranged on the outer side of the door leaf and a sealing beam arranged on the rotating shaft; the driving shaft and the rotating shaft are connected through a synchronous assembly; the synchronous component comprises a first belt wheel arranged on the driving shaft, a connecting shaft rotationally arranged on the door leaf, a second belt wheel arranged on the connecting shaft and a synchronous belt sleeved on the first belt wheel and the second belt wheel; one end of the connecting shaft is provided with a first bevel gear; and a second bevel gear meshed with the first bevel gear is arranged on the rotating shaft.

Through adopting above-mentioned technical scheme, close the door leaf for the door leaf is located the door frame. The transmission shaft is rotated, so that the transmission shaft drives the transmission gear to rotate, the transmission racks meshed with the two sides of the transmission gear vertically move towards the direction far away from the transmission gear respectively, and the lock head at the end part of the transmission rack extends out of the door leaf and is matched with the door frame in a clamping manner, so that the door leaf can be locked, and a protection effect is achieved. The locking mechanism is arranged inside the door leaf, so that the safety of the civil air defense door in use is improved. The matching of the gear rack can drive the lock head to rapidly extend out of the door leaf to be matched with the door frame in an inserting way. When locking the door leaf through locking mechanism, can drive the pivot through synchronizing assembly and rotate, can drive when the transmission shaft rotates and lie in the epaxial first band pulley of transmission, drive the second band pulley through the hold-in range and rotate, because the second band pulley is located the connecting axle, make the connecting axle rotate, first bevel gear and second bevel gear mesh mutually, can drive second bevel gear and rotate, thereby can drive the pivot and rotate, make can put down the sealed roof beam in the locking door leaf, the locking efficiency of people's air defense door has been improved.

Preferably, a clamping strip is fixed at one end of the lock head away from the transmission gear; the door frame is of a hollow structure; the inner wall of the door frame is provided with a slot which is matched with the clamping strip in an inserting way; a through groove matched with the clamping strip in an inserting manner is formed in the door leaf; the length direction of the slot and the length direction of the through groove are both vertical to the length direction of the door leaf; the transmission rack is provided with a connecting block; the lock head is rotatably arranged on the connecting block; a sleeve is fixed on the inner side wall of the door leaf; the lock head is arranged in the sleeve in a sliding manner; the inner side wall of the sleeve is provided with a guide groove; the guide groove comprises a first groove, a second groove and a third groove, wherein the first groove is consistent with the height direction of the sleeve and is close to the lower end face of the sleeve; the first groove and the third groove are arranged in a staggered manner; two ends of the second groove are respectively communicated with the first groove and the third groove; the lock head is provided with a bulge which is arranged along the guide groove in a sliding manner.

Through adopting above-mentioned technical scheme, set up the sleeve and utilize the guide way of sleeve inside wall, can drive the tapered end and stretch out to the door frame in to the door leaf outside at the driving rack, continue to rotate drive gear, make the arch on the tapered end can rotate along the second groove, the tapered end can rotate redirecting, the length direction of tapered end fixing's card strip is become unanimous with door frame length direction by mutually perpendicular with door frame length direction, can improve the joint strength of tapered end and door frame, be difficult for breaking away from the connection with the door frame, security performance when having improved people's air defense door locking.

Preferably, the end surface of the door leaf is provided with a fixing groove; a reinforcing component is arranged in the door frame; the reinforcing assembly comprises a first rod rotatably arranged in the door frame, a second rod horizontally arranged at one end of the first rod and a third rod horizontally arranged at the other end of the first rod; the distance between the second rod and the end face of the door leaf is greater than the distance between the third rod and the end face of the door leaf; a return spring is connected between the third rod and the inner side wall of the door frame far away from the door leaf; when the clamping strip extends into the door frame, the clamping strip is abutted against one side, close to the door leaf, of the second rod, and the third rod is inserted into the fixing groove.

Through adopting above-mentioned technical scheme, set up and strengthen the subassembly, can strengthen the locking effect of door leaf, strengthen the security performance of people's air defense door. When rotating the transmission shaft for the tapered end stretches into in the door frame, the card strip supports tightly to the second pole, makes the third pole overcome reset spring's pressure and rotates downwards and joint in the fixed slot, thereby can further improve the erection joint of door leaf and door frame, strengthens the locking effect to the people's air defense door. And, because the tip of tapered end is provided with the card strip, the card strip has rotated certain angle through the guide way after stretching into in the door frame for the length direction of card strip is unanimous with the length direction of door leaf, thereby can increase the area of contact with the second pole, and it supports the pressure to make the third pole peg graft in the fixed slot of door leaf terminal surface to make the second pole more convenient.

Preferably, one end of the driving shaft penetrates through the door leaf and is provided with a locking hand wheel; and the door leaf is provided with a first positioning mechanism for limiting the rotation of the locking hand wheel.

Through adopting above-mentioned technical scheme, set up the locking hand wheel, can be convenient for adjust the transmission shaft for the tapered end can stretch out or retract inside the door leaf, realizes the locking and the opening of door leaf. The first positioning mechanism can reduce the possibility that the locking hand wheel continues to rotate after the locking head is adjusted to extend out, and the reliability of locking the door leaf is improved.

Preferably, the first positioning mechanism comprises a first fixing strip arranged on the circumferential direction of the driving shaft penetrating through the door leaf; the number of the first fixing strips is two and is symmetrical about the axis of the driving shaft; one side of the locking hand wheel is provided with a first fixed cylinder which is sleeved on the driving shaft and slides along the length direction of the driving shaft; the inner side wall of the first fixed cylinder is provided with a first positioning groove which is in splicing fit with the first fixed strip; a first positioning gear is fixed on the first fixed cylinder in the circumferential direction and at a position far away from the locking hand wheel; and a first gear groove which is in plug-in fit with the first positioning gear is formed in the outer side wall of the door leaf.

Through adopting above-mentioned technical scheme, when needs rotate locking hand wheel and rotate the transmission shaft and adjust the tapered end, stretch the locking hand wheel to the direction of keeping away from the door leaf for first positioning gear breaks away from first gear groove, rotates the locking hand wheel and can drive the transmission shaft and rotate. After the lock head is adjusted, the locking hand wheel is abutted to one side close to the door leaf, so that the first fixing barrel can slide along the driving shaft, the first positioning gear can be inserted into the first gear groove, the locking hand wheel cannot rotate easily, and the safety and reliability of door leaf locking are improved.

Preferably, the outer side wall of the door leaf is provided with an installation box; the second bevel gear is positioned in the mounting box; two ends of the rotating shaft respectively penetrate through two sides of the installation box and are rotatably connected with the outer side wall of the door leaf; a third bevel gear meshed with the second bevel gear is rotatably arranged in the mounting box; an adjusting shaft is fixed on one side of the third bevel gear, which is far away from the door leaf; one end of the adjusting shaft, which is far away from the third bevel gear, penetrates through the mounting box and is provided with an adjusting hand wheel; and a second positioning mechanism for limiting the rotation of the adjusting hand wheel is arranged on the mounting box.

By adopting the technical scheme, the installation box is arranged, the second bevel gear and the third bevel gear can be conveniently installed in the installation box, and the safety of the locking device is improved. When the locking device is adjusted, if the synchronous belt slips and the sealing beam cannot be adjusted, the adjusting hand wheel can be rotated, so that the adjusting hand wheel can adjust and rotate the rotating shaft, and the sealing beam can be lifted or put down. After the door leaf is closed, the adjusting hand wheel is in a rotatable state, the door leaf is locked, and after the sealing beam is put down, the adjusting hand wheel can be fixed through the second positioning mechanism, so that the locking of the adjusting hand wheel is enhanced, and the reliability of the locking device is improved.

Preferably, the second positioning mechanism comprises a second fixing strip arranged on the circumferential direction of the adjusting shaft passing through the door leaf; two second fixing strips are symmetrically arranged around the axis of the adjusting shaft; one side of the adjusting hand wheel is provided with a second fixed cylinder which is sleeved on the adjusting shaft and slides along the length direction of the adjusting shaft; the inner side wall of the second fixed cylinder is provided with a second positioning groove in inserting fit with the second fixed strip; a second positioning gear is fixed on the circumferential direction of the second fixed cylinder and is positioned at the position of the second fixed cylinder far away from the adjusting hand wheel; and a second gear groove which is in plug-in fit with the second positioning gear is formed in the outer side wall of the door leaf.

Through adopting above-mentioned technical scheme, closing the door leaf after, need be locked by the door leaf, the condition that will seal the roof beam and put down, perhaps when needs rotate the regulating spindle through rotating the regulating hand wheel and adjust the axis of rotation, will adjust the hand wheel and stretch to the direction of keeping away from the install bin for second positioning gear breaks away from the second gear groove, rotates the regulating hand wheel and can drive the regulating spindle and rotate. After the lock head is adjusted, the adjusting hand wheel is abutted to one side close to the installation box, the second fixing cylinder can slide along the adjusting shaft, so that the second positioning gear can be inserted into the second gear groove, the adjusting hand wheel cannot rotate easily, and the safety and reliability of door leaf locking are improved.

Preferably, a dovetail strip is arranged on one side, away from the transmission gear, of the transmission rack; the dovetail strip is arranged along the length direction of the transmission rack; and a dovetail groove in sliding fit with the dovetail strip is formed in the inner side wall of the door leaf.

Through adopting above-mentioned technical scheme, set up the dovetail, use with the dovetail cooperation on the door leaf inside wall, security when can improving the vertical removal of transmission rack edge for the tapered end can be accurate peg graft inside the door frame, stability when having improved the transmission rack and removing.

Preferably, the length of the third rod is smaller than that of the fixing groove.

Through adopting above-mentioned technical scheme, set the length of third pole down with the length of fixed slot, can make the third pole can accurate peg graft in the fixed slot.

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

the locking mechanism and the sealing mechanism can lock the door leaf and put down the sealing beam under the linkage of the synchronous assembly, so that the locking efficiency of the civil air defense door is improved;

when the transmission rack drives the lock head to extend out of the door leaf into the door frame, the transmission gear is continuously rotated, so that the protrusion on the lock head can rotate along the second groove, the lock head can rotate to change the direction, the length direction of the clamping strip fixed at the end part of the lock head is changed into the length direction of the door frame from the direction vertical to the length direction of the door frame, the length direction of the clamping strip is consistent with the length direction of the door frame, the connection strength of the lock head and the door frame can be improved, the lock head is not easy to be separated from the connection with the door frame, and the safety performance of the civil defense door during locking is improved;

set up and strengthen the subassembly, can strengthen the locking effect of door leaf, strengthen the security performance of people's air defense door.

Drawings

Fig. 1 is a schematic structural view of a door leaf according to an embodiment of the present invention after being locked.

Fig. 2 is a schematic structural view of the inside of the door leaf according to the embodiment of the present application.

Fig. 3 is a schematic structural view of a door leaf according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic structural view of a sleeve according to an embodiment of the present application.

Fig. 6 is an enlarged schematic view of a portion B in fig. 3.

Description of reference numerals: 1. a door leaf; 11. a dovetail groove; 12. a through groove; 13. a first gear groove; 14. a sleeve; 141. a first groove; 142. a second groove; 143. a third groove; 15. fixing grooves; 2. a door frame; 21. a slot; 3. a locking mechanism; 31. a drive shaft; 32. a transmission gear; 321. a dovetail strip; 322. connecting blocks; 33. a drive rack; 34. a drive shaft; 35. a worm gear; 36. a worm; 37. a lock head; 371. a protrusion; 38. clamping the strip; 39. locking the hand wheel; 4. a sealing mechanism; 41. a rotating shaft; 42. a first connecting rod; 43. a second connecting rod; 44. a sealing beam; 5. a synchronization component; 51. a connecting shaft; 52. a first pulley; 53. a second pulley; 54. a synchronous belt; 55. a first bevel gear; 56. a second bevel gear; 6. installing a box; 61. a third bevel gear; 62. an adjustment shaft; 63. adjusting a hand wheel; 64. a second gear groove; 7. a first positioning mechanism; 71. a first fixing strip; 72. a first fixed cylinder; 721. a first positioning groove; 73. a first positioning gear; 8. a reinforcement assembly; 81. a first lever; 82. a second lever; 83. a third lever; 84. a return spring; 9. a second positioning mechanism; 91. a second fixing strip; 92. a second fixed cylinder; 921. a second positioning groove; 93. a second positioning gear.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses people's air defense door blocking device. Referring to fig. 1 and 2, the civil air defense door locking device comprises a locking mechanism 3 arranged inside a door leaf 1 and a sealing mechanism 4 arranged on the door leaf 1. One side of the door leaf 1 is rotatably connected with one side of the door frame 2. Door leaf 1 and door frame 2 are hollow structure, set up locking mechanical system 3 inside door leaf 1, are favorable to improving the security when door leaf 1 uses. The locking mechanism 3 is connected with the sealing mechanism 4 through the synchronizing component 5, and can lock the door leaf 1 and seal the civil air defense door at the same time.

Referring to fig. 2 and 3, the locking mechanism 3 includes a transmission shaft 31, a transmission gear 32, a transmission rack 33, a drive shaft 34, and a worm wheel 35 and a worm 36. The transmission shaft 31 is rotatably disposed in the door leaf 1 and located at the middle position of the door leaf 1. The longitudinal direction of the transmission shaft 31 coincides with the longitudinal direction of the door 1. Two transmission gears 32 are provided, and the two transmission gears 32 are respectively fixed at positions of the transmission shaft 31 near both ends thereof. Four transmission racks 33 are provided, and two transmission racks 33 are respectively engaged with both sides of one transmission gear 32. A dovetail strip 321 is fixed on one side of the transmission rack 33 far away from the transmission gear 32, and the length direction of the dovetail strip 321 is consistent with the length direction of the transmission rack 33. The dovetail groove 11 is formed in the inner side wall of the door leaf 1, and the dovetail bar 321 is in sliding fit with the dovetail groove 11, so that the stability of the transmission rack 33 in vertical movement is improved. A locking head 37 is installed at the upper end of one driving rack 33 engaged with one driving gear 32, and a locking head 37 is installed at the lower end of the other driving rack 33 engaged with the driving gear 32. One end of the transmission rack 33, which is far away from the transmission gear 32, is fixed with a connecting block 322, the lock head 37 is rotatably connected to the connecting block 322, and one end of the lock head 37, which is far away from the connecting block 322, is fixed with a strip-shaped clamping strip 38. Logical groove 12 has all been seted up to the up end of door leaf 1 and terminal surface down, has all seted up slot 21 on the interior roof of door frame 2 and the interior diapire. The length direction of the slot 21 and the length direction of the through groove 12 are both perpendicular to the length direction of the door leaf 1. The vertical movement of the driving rack 33 drives the clamping strip 38 to pass through the through slot 12 and to be in plugging fit with the slot 21. The driving shaft 34 is rotatably disposed in the door leaf 1 below the driving shaft 31. The length direction of the drive shaft 34 is perpendicular to the length direction of the drive shaft 31. The worm wheel 35 is fixed to the transmission shaft 31 and is located in the middle of the transmission shaft 31. A worm 36 is fixed to the drive shaft 34, and the worm 36 meshes with the worm wheel 35.

Referring to fig. 4, one end of the driving shaft 34 passes through the door leaf 1 and is mounted with a locking hand wheel 39. In order to fix the locking handwheel 39 after the locking handwheel 39 is used, so that the drive shaft 34 is not easy to rotate, and the safety of the locking handwheel 39 is improved, a first positioning mechanism 7 is arranged on the door leaf 1. The first positioning mechanism 7 includes a first fixing bar 71, a first fixing cylinder 72, and a first positioning gear 73. The first fixing bars 71 are provided in two symmetrically with respect to the axis of the drive shaft 34. The first fixing bar 71 is fixed to the circumferential direction of the driving shaft 34 at a position where the driving shaft 34 passes through the door leaf 1, and the first fixing bar 71 is disposed along the longitudinal direction of the driving shaft 34. The first fixed cylinder 72 is fixed to the locking handwheel 39 on the side close to the door 1, and the first fixed cylinder 72 can slide along the length direction of the driving shaft 34. A first positioning groove 721 is formed in the inner side wall of the first fixing cylinder 72, and the first fixing strip 71 is in insertion fit with the first positioning groove 721, so that the locking handwheel 39 and the driving shaft 34 are not easy to rotate relatively. The first positioning gear 73 is fixed to the first fixed cylinder 72 in the circumferential direction thereof and is located at a position of the first fixed cylinder 72 away from the locking hand wheel 39. The outer side wall of the door leaf 1 is provided with a first gear groove 13, and the first positioning gear 73 is in inserted fit with the first gear groove 13. When the locking hand wheel 39 does not need to be rotated, the locking hand wheel 39 is pushed towards the direction close to the door leaf 1, so that the first fixed cylinder 72 slides along the length direction of the driving shaft 34, the first positioning gear 73 can be inserted into the first gear groove 13, and the first fixed cylinder 72 and the first fixed strip 71 are matched for use, so that the first fixed cylinder 72 and the driving shaft 34 are not easy to rotate relatively, and the driving shaft 34 can be locked.

Referring to fig. 2 and 5, a sleeve 14 is fixed on the inner side wall of the door 1, and a lock 37 is slidably disposed in the sleeve 14. The inner side wall of the sleeve 14 is provided with a guide groove for driving the lock head 37 to rotate 90 degrees, so that the length direction of the clamping strip 38 is perpendicular to the length direction of the slot 21, the clamping strip 38 is not easy to separate from the doorframe 2, and the connection between the door leaf 1 and the doorframe 2 is enhanced. The guide groove includes a first groove 141, a second groove 142, and a third groove 143. The height direction of the first groove 141 coincides with the height direction of the sleeve 14, and the lower groove wall of the first groove 141 penetrates the lower end surface of the sleeve 14. The second groove 142 is curved along the circumferential direction of the sleeve 14. The height direction of the third groove 143 coincides with the height direction of the sleeve 14, and the upper groove wall of the third groove 143 penetrates the upper end surface of the sleeve 14. The first and

third grooves

141 and 143 are offset from each other, and a line connecting the first groove 141 and the center of the sleeve 14 and a line connecting the third groove 143 and the center of the sleeve 14 are perpendicular to each other. Two ends of the second groove 142 are respectively communicated with the first groove 141 and the third groove 143, and smooth transition is arranged at the connection of every two grooves. The position that the tapered end 37 is gone up and is close to connecting block 322 is fixed with arch 371, and at tapered end 37 by the vertical removal in-process of drive rack 33 drive, arch 371 slides along the guide way and sets up.

Referring to fig. 2, in order to further improve the connection strength between the door 1 and the door frame 2, a reinforcement assembly 8 is installed in the door frame 2. The reinforcement assembly 8 comprises a first rod 81, a second rod 82 and a third rod 83. The first rod 81 is rotatably disposed in the door frame 2, and the first rod 81 is disposed obliquely. One end of the second rod 82 is fixed to the upper end of the first rod 81. One end of the third lever 83 is fixed to the lower end of the first lever 81. The second rod 82 and the third rod 83 are both horizontally disposed. A return spring 84 is connected between the third rod 83 and the inner side wall of the door frame 2 far away from the door leaf 1. Fixed slot 15 has been seted up to the terminal surface of door leaf 1, and third pole 83 is pegged graft with fixed slot 15 and is cooperated, and the length of third pole 83 is less than the length of fixed slot 15, is favorable to third pole 83 and fixed slot 15 to peg graft the cooperation. After the lock head 37 is driven to be locked with the door frame 2, the clamping strip 38 extends into the door frame 2 and abuts against one side of the second rod 82 close to the door 1, so that the return spring 84 is stretched, and the third rod 83 is inserted into the fixing groove 15 formed in the end face of the door 1.

Referring to fig. 2, the seal mechanism 4 includes a rotating shaft 41, a first connecting rod 42, a second connecting rod 43, and a seal beam 44. The rotating shaft 41 is rotatably disposed outside the door 1, and the rotating shaft 41 is located near a position below the door 1, and a longitudinal direction of the rotating shaft 41 coincides with a longitudinal direction of the door 1. The cross section of the first connecting rod 42 is triangular, one end of the first connecting rod 42 is hinged to the lower position of the door leaf 1, and one side of the first connecting rod 42 is fixedly connected to the sealing beam 44. One end of the second connecting rod 43 is hinged to the rotating shaft 41, and the other end of the second connecting rod 43 is hinged to one side of the first connecting rod 42 away from the sealing beam 44. The rotation of the rotating shaft 41 drives the second connecting rod 43 to rotate, and the first connecting rod 42 hinged to the second connecting rod 43 rotates around the pin shaft hinged to the door leaf 1 as a rotation center, so that the sealing beam 44 can be pulled to be lifted or put down.

Referring to fig. 2 and 6, the timing assembly 5 includes a connecting shaft 51, a first pulley 52, a second pulley 53, and a timing belt 54. The connecting shaft 51 is rotatably disposed on the door 1 and near the lower end surface of the door 1, and the longitudinal direction of the connecting shaft 51 is perpendicular to the longitudinal direction of the door 1. The first pulley 52 is fixed to the drive shaft 34, the second pulley 53 is fixed to the connecting shaft 51, and the first pulley 52 and the second pulley 53 are located on the same vertical plane. The timing belt 54 is sleeved on the first pulley 52 and the second pulley 53. One end of the connecting shaft 51 far away from the second belt wheel 53 penetrates through the door leaf 1 and is fixedly provided with a first bevel gear 55, a second bevel gear 56 is fixedly arranged on the rotating shaft 41, and the second bevel gear 56 is meshed with the first bevel gear 55.

Referring to fig. 2 and 6, a mounting box 6 is fixed to the outer side wall of the door 1, and the mounting box 6 has a rectangular parallelepiped box shape. The second bevel gear 56 is located within the mounting box 6. Two ends of the rotating shaft 41 respectively penetrate through two sides of the installation box 6 and are rotatably connected with the outer side wall of the door leaf 1. A third bevel gear 61 is rotatably connected in the mounting box 6, the third bevel gear 61 is meshed with the second bevel gear 56, and the axis of the third bevel gear 61 coincides with the axis of the first bevel gear 55. An adjusting shaft 62 is fixed on one side of the third bevel gear 61 far away from the door leaf 1, and the adjusting shaft 62 is horizontally arranged. One end of the adjusting shaft 62 far away from the third bevel gear 61 penetrates through the mounting box 6 and is fixedly provided with an adjusting hand wheel 63, so that the sealing beam 44 can be conveniently adjusted when the synchronous belt 54 slips and cannot drive the sealing beam 44 to be lifted up or put down.

Referring to fig. 2 and 6, in order to keep the seal beam 44 in its current state after the seal beam 44 is adjusted, a second positioning mechanism 9 is mounted on the mounting box 6 for limiting the rotation of the adjusting hand wheel 63. The second positioning mechanism 9 includes a second fixing bar 91, a second fixing cylinder 92, and a second positioning gear 93. The first fixing bars 71 are provided in two symmetrically with respect to the axis of the adjusting shaft 62. The second fixing strip 91 is fixed to the circumferential direction of the driving shaft 34 at a position where the adjusting shaft 62 passes through the door leaf 1, and the second fixing strip 91 is disposed along the length direction of the adjusting shaft 62. The second fixed cylinder 92 is fixed on one side of the adjusting handwheel 63 close to the door leaf 1, and the second fixed cylinder 92 can slide along the length direction of the adjusting shaft 62. A second positioning groove 921 is formed in the second fixing cylinder 92, and the second fixing strip 91 is in insertion fit with the second positioning groove 921, so that the adjusting hand wheel 63 is not easy to rotate relative to the adjusting shaft 62. The second positioning gear 93 is fixed to the second fixed cylinder 92 in the circumferential direction and is located at a position where the second fixed cylinder 92 is away from the adjustment handwheel 63. The outer side wall of the installation box 6 away from the door leaf 1 is provided with a second gear groove 64, and a second positioning gear 93 is in inserted fit with the second gear groove 64. When the adjusting hand wheel 63 does not need to be rotated, the adjusting hand wheel 63 needs to be pushed to one side close to the installation box 6, so that the second positioning gear 93 can be inserted into the second gear groove 64, the adjusting hand wheel 63 can be locked, and the adjusting hand wheel 63 is not easy to rotate.

The implementation principle of the locking device of the civil air defense door in the embodiment of the application is as follows: after the door leaf 1 is closed, the worm 36 on the driving shaft 34 drives the worm wheel 35 meshed with the worm to rotate by rotating the locking hand wheel 39, the driving shaft 31 rotates, the driving gear 32 on the driving shaft 31 drives the driving rack 33 to vertically move towards the direction far away from the driving gear 32, so that the locking head 37 at the end part of the driving rack 33 extends out of the door leaf 1, and the sleeve 14 is fixed at the position close to the end surface of the door leaf 1 in the door leaf 1, under the action of the guide groove in the sleeve 14, the locking head 37 rotates for 90 degrees, the locking head 37 drives the clamping strip 38 at the end part to rotate, the length direction of the clamping strip 38 is perpendicular to the length direction of the door leaf 1, and therefore the connection strength of the locking head 37 and the door frame 2 can be enhanced. Because install in the door frame 2 and strengthen the subassembly 8, tapered end 37 is when stretching into in to door frame 2, card strip 38 and second pole 82 butt for first pole 81 uses the rotation tie point with door frame 2 to rotate as the center of rotation, and the pulling force that reset spring 84 was overcome to third pole 83 is pegged graft in the fixed slot 15 that the terminal surface was seted up of door leaf 1, has further improved the joint strength of door leaf 1 with door frame 2, makes the locking security of people's air defense door higher. When the locking hand wheel 39 rotates, the second belt wheel 53 on the connecting shaft 51 rotates under the action of the synchronous belt 54, so that the connecting shaft 51 rotates, and the first bevel gear 55 fixed on the connecting shaft 51 is meshed with the second bevel gear 56 on the rotating shaft 41, so that the second bevel gear 56 can drive the rotating shaft 41 to rotate, and the rotating shaft 41 can drive the sealing beam 44 to overturn downwards when rotating, so as to seal the joint of the door leaf 1 and the door frame 2. Finally, the locking hand wheel 39 and the adjusting hand wheel 63 are pushed towards the direction close to the door leaf 1, so that the first positioning gear 73 is inserted into the first gear groove 13, and the second positioning gear 93 is inserted into the second gear groove 64, so that the locking hand wheel 39 and the adjusting hand wheel 63 are not easy to rotate. When the door is required to be unlocked, the locking hand wheel 39 and the adjusting hand wheel 63 are pulled in a direction away from the door leaf 1, so that the first positioning gear 73 is separated from the first gear groove 13, the second positioning gear 93 is separated from the second gear groove 64, the locking hand wheel 39 is rotated reversely, the locking hand wheel 39 drives the lock head 37 to retract into the door leaf 1, the clamping strip 38 is separated from the connection with the door frame 2, and under the action of the return spring 84, the third rod 83 is separated from the connection with the fixing groove 15 and restores to a horizontal state, so that the door leaf 1 can be opened.

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 people's air defense door blocking device, is including setting up locking mechanical system (3) on door leaf (1), its characterized in that: the locking mechanism (3) comprises a transmission shaft (31) which is rotatably arranged in the door leaf (1); the transmission shaft (31) is horizontally arranged, and transmission gears (32) are fixed on the transmission shaft (31) and close to the two ends; the door leaf (1) is internally provided with transmission racks (33) which are meshed with the transmission gear (32) and positioned on two sides of the transmission gear (32); one end of the transmission rack (33) which is meshed with the two sides of the transmission gear (32) and deviates from the other end is provided with a lock head (37) which is in plug fit with the door frame (2); a worm wheel (35) is arranged in the middle of the transmission shaft (31); a driving shaft (34) is rotatably arranged on the door leaf (1); a worm (36) meshed with the worm wheel (35) is arranged on the driving shaft (34); a sealing mechanism (4) is arranged on the door leaf (1); the sealing mechanism (4) comprises a rotating shaft (41) rotatably arranged on the outer side of the door leaf (1) and a sealing beam (44) arranged on the rotating shaft (41); the driving shaft (34) and the rotating shaft (41) are connected through a synchronous component (5); the synchronous component (5) comprises a first belt wheel (52) arranged on the driving shaft (34), a connecting shaft (51) rotatably arranged on the door leaf (1), a second belt wheel (53) arranged on the connecting shaft (51) and a synchronous belt (54) sleeved on the first belt wheel (52) and the second belt wheel (53); one end of the connecting shaft (51) is provided with a first bevel gear (55); and a second bevel gear (56) meshed with the first bevel gear (55) is arranged on the rotating shaft (41).

2. A people air defense door latch according to claim 1, wherein: a clamping strip (38) is fixed at one end of the lock head (37) far away from the transmission gear (32); the door frame (2) is of a hollow structure; the inner wall of the door frame (2) is provided with a slot (21) which is in splicing fit with the clamping strip (38); a through groove (12) which is in plug-in fit with the clamping strip (38) is formed in the door leaf (1); the length direction of the slot (21) and the length direction of the through groove (12) are both vertical to the length direction of the door leaf (1); a connecting block (322) is arranged on the transmission rack (33); the lock head (37) is rotatably arranged on the connecting block (322); a sleeve (14) is fixed on the inner side wall of the door leaf (1); the lock head (37) is arranged in the sleeve (14) in a sliding manner; the inner side wall of the sleeve (14) is provided with a guide groove; the guide grooves comprise a first groove (141) which is consistent with the height direction of the sleeve (14) and is close to the lower end face of the sleeve (14), a second groove (142) which is arranged along the circumferential direction of the sleeve (14) in a bending mode, and a third groove (143) which is consistent with the height direction of the sleeve (14) and is close to the upper end face of the sleeve (14); the first groove (141) and the third groove (143) are arranged in a staggered manner; two ends of the second groove (142) are respectively communicated with the first groove (141) and the third groove (143); the lock head (37) is provided with a bulge (371) which is arranged along the guide groove in a sliding way.

3. A people air door latch according to claim 2, characterised in that: the end surface of the door leaf (1) is provided with a fixing groove (15); a reinforcing component (8) is arranged in the door frame (2); the reinforcing component (8) comprises a first rod (81) rotatably arranged in the door frame (2), a second rod (82) horizontally arranged at one end of the first rod (81), and a third rod (83) horizontally arranged at the other end of the first rod (81); the distance between the second rod (82) and the end face of the door leaf (1) is greater than the distance between the third rod (83) and the end face of the door leaf (1); a return spring (84) is connected between the third rod (83) and the inner side wall of the door frame (2) far away from the door leaf (1); when the clamping strip (38) extends into the door frame (2), the clamping strip is abutted against one side, close to the door leaf (1), of the second rod (82), and the third rod (83) is inserted into the fixing groove (15).

4. A people air defense door latch according to claim 1, wherein: one end of the driving shaft (34) penetrates through the door leaf (1) and is provided with a locking hand wheel (39); the door leaf (1) is provided with a first positioning mechanism (7) for limiting the rotation of a locking hand wheel (39).

5. A people air defense door latch according to claim 4, wherein: the first positioning mechanism (7) comprises a first fixing strip (71) arranged on the circumferential direction of the driving shaft (34) penetrating through the door leaf (1); the first fixing strips (71) are symmetrically arranged in two relative to the axis of the driving shaft (34); one side of the locking hand wheel (39) is provided with a first fixed cylinder (72) which is sleeved on the driving shaft (34) and slides along the length direction of the driving shaft (34); the inner side wall of the first fixed barrel (72) is provided with a first positioning groove (721) which is in plug-in fit with the first fixed strip (71); a first positioning gear (73) is fixed on the circumferential direction of the first fixed cylinder (72) and at a position, far away from the locking hand wheel (39), of the first fixed cylinder (72); and a first gear groove (13) which is in plug-in fit with the first positioning gear (73) is formed in the outer side wall of the door leaf (1).

6. A people air defense door latch according to claim 1, wherein: the outer side wall of the door leaf (1) is provided with a mounting box (6); the second bevel gear (56) is positioned in the mounting box (6); two ends of the rotating shaft (41) respectively penetrate through two sides of the installation box (6) and are rotatably connected with the outer side wall of the door leaf (1); a third bevel gear (61) meshed with the second bevel gear (56) is rotatably arranged in the mounting box (6); an adjusting shaft (62) is fixed on one side of the third bevel gear (61) far away from the door leaf (1); one end of the adjusting shaft (62) far away from the third bevel gear (61) penetrates through the mounting box (6) and is provided with an adjusting hand wheel (63); and a second positioning mechanism (9) for limiting the rotation of the adjusting hand wheel (63) is arranged on the mounting box (6).

7. A people air defense door latch according to claim 6, wherein: the second positioning mechanism (9) comprises a second fixing strip (91) which is arranged on the circumferential direction of the adjusting shaft (62) penetrating through the door leaf (1); the number of the second fixing strips (91) is two and is symmetrical about the axis of the adjusting shaft (62); a second fixed cylinder (92) which is sleeved on the adjusting shaft (62) and slides along the length direction of the adjusting shaft (62) is arranged on one side of the adjusting hand wheel (63); a second positioning groove (921) which is matched with the second fixing strip (91) in an inserting manner is formed in the inner side wall of the second fixing barrel (92); a second positioning gear (93) is fixed on the circumferential direction of the second fixed cylinder (92) and at a position, far away from the adjusting hand wheel (63), of the second fixed cylinder (92); and a second gear groove (64) which is in plug-in fit with the second positioning gear (93) is formed in the outer side wall of the door leaf (1).

8. A people air defense door latch according to claim 1, wherein: a dovetail strip (321) is arranged on one side, away from the transmission gear (32), of the transmission rack (33); the dovetail strip (321) is arranged along the length direction of the transmission rack (33); and a dovetail groove (11) in sliding fit with the dovetail strip (321) is formed in the inner side wall of the door leaf (1).

9. A people air door latch according to claim 3, characterised in that: the length of the third rod (83) is less than that of the fixing groove (15).