CN103628793A - Closing device below main door leaf of preventive closed separation door of subway tunnel - Google Patents

Closing device below main door leaf of preventive closed separation door of subway tunnel Download PDF

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Publication number
CN103628793A
CN103628793A CN201310691762.6A CN201310691762A CN103628793A CN 103628793 A CN103628793 A CN 103628793A CN 201310691762 A CN201310691762 A CN 201310691762A CN 103628793 A CN103628793 A CN 103628793A
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CN
China
Prior art keywords
door
revolving
drawer
main
leaf
Prior art date
Application number
CN201310691762.6A
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Chinese (zh)
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CN103628793B (en
Inventor
金丰年
蒋国良
涂群章
王源
陈昕
周建钊
刘新宇
孔新立
储伟俊
刘斌
王强
马淑娜
袁小军
徐迎
邬建华
Original Assignee
中国人民解放军理工大学
常州华东人防设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 中国人民解放军理工大学, 常州华东人防设备有限公司 filed Critical 中国人民解放军理工大学
Priority to CN201310691762.6A priority Critical patent/CN103628793B/en
Publication of CN103628793A publication Critical patent/CN103628793A/en
Application granted granted Critical
Publication of CN103628793B publication Critical patent/CN103628793B/en

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Abstract

The invention relates to a closing device below a main door leaf of a preventive closed separation door of a subway tunnel. The device is arranged below the main door leaf of the separation door and comprises a drawer door, at least two pairs of revolving doors, a drawer door driving mechanism and revolving door driving mechanisms, wherein the drawer door slides along an inner side seal of the main door leaf; the at least two pairs of revolving doors are arranged on two symmetrical sides of a subway rail; the drawer door driving mechanism is used for driving the drawer door to move and the revolving door driving mechanisms are used for driving the revolving doors to move; the drawer door driving mechanism is arranged on the main door leaf and is in transmission connection with the drawer door and is used for driving the drawer door to move up and down or do rotation with a certain angle; the revolving doors are rotatably connected with corresponding positions below the drawer door; and the revolving door driving mechanisms are arranged on the drawer door and are in transmission connection with the revolving doors and are used for driving the revolving doors to do corresponding movements. The closing device has the advantages that the upper plane of a horizontal or a non-horizontal rail can be closed and the adaptability is strong; when a dangerous condition occurs, corresponding operation parts are directly manipulated to close gaps on the two sides of the rail and corresponding closing blocks do not need to be found to block; the closing device is particularly adapted to an emergent closing condition; and meanwhile, a distribution range of closing points is large, a locking force is uniform and the locking is reliable.

Description

The obturator of the main door leaf of Subway Tunnel protective airtight partition door below
 
Technical field
The present invention relates to a kind of sealed partition door, relate in particular to the obturator of the main door leaf of Subway Tunnel protective airtight partition door below.
Background technology
Subway can carry a large amount of passengers' the vehicles as a kind of, makes subway station become a large amount of places of assembling of the public, and safety seems particularly important.So should be by various unsafe situation that may occur, even the situation in wartime all should take in, such as the leakage of pernicious gas, the attack of terrorism of poison gas, how can effectively cut off in the short period of time, prevent that above-mentioned gas from spreading in whole subway tunnel, endangers more life.
Therefore need to partition door of subway be set in the appropriate location of subway tunnel, once emergency situation occurs, close partition door of subway, and rapidly airtight to carrying out to the space between plane on underground railway track below main door leaf after main door leaf cuts out, otherwise can not effectively cut off spreading of pernicious gas in subway tunnel.
Summary of the invention
The object of the present invention is to provide a kind of can be rapidly after main door leaf cuts out to carry out the obturator below the effectively airtight main door leaf of a kind of Subway Tunnel protective airtight partition door below main door leaf to the space between plane on underground railway track.Its concrete technical scheme is as follows:
Described obturator, be arranged on the main door leaf below of partition door, comprise the drawer door sliding along described main door leaf inner seal, be separately positioned at least two pairs of revolving doors of the symmetrical both sides of underground railway track and drive respectively drawer door and drawer door drive mechanism and the revolving door driving mechanism of revolving door motion, described drawer door drive mechanism is arranged on main described main door leaf and the described drawer door that is in transmission connection, drive drawer door to move up and down or do the rotation of certain angle, described revolving door is rotatably connected on drawer door below correspondence position, described revolving door driving mechanism is arranged on drawer door, the revolving door that is in transmission connection is done corresponding rotation.
Described obturator further design is, described drawer door drive mechanism comprises that two are located at two lifting units on described door leaf, one end of described two lifting units respectively with drawer door on corresponding position hinged.
Described obturator further design is, described lifting unit comprises the casing that is arranged at door leaf, the worm gear that is arranged on engagement in casing with worm screw, be arranged at the interior threaded part on described worm gear, the second screw rod and the control member of vertical placement, described the second screw rod connects worm gear and lower end and track drawer door hinge by interior threaded part and connects, and control member is connected on worm shaft.
Described obturator further design is, described lifting unit comprises the second screw rod and the control member that is arranged at the casing of door leaf, the bevel gear that is arranged on the pair of meshing in casing, interior threaded part, vertical placement, described interior threaded part is arranged on the bevel gear of vertical rotation axis in described bevel gear, described the second screw rod by interior threaded part with the bevel gear of described vertical rotation axis be connected and lower end and track drawer door hinge connect, described control member is connected in the bevel gear rotating shaft of horizontal rotating shaft.
Described obturator further designs and is, described revolving door driving mechanism comprises partial gear and the control member on intermeshing setting and described revolving door circumference, and described control member is connected to the rotating shaft of described revolving door; Or revolving door driving mechanism comprises control member and intermeshing two pairs of gears, the every pair of gear be connected in the rotating shaft of two second corresponding revolving doors, a control member is connected in the roller end of the second revolving door.
Described obturator further designs and is, described revolving door driving mechanism is provided with the second locking unit, and described the second locking unit comprises crank and connecting rod, and described crank center of rotation is located on one second revolving door axis, and one end and the crank of described connecting rod are hinged.
Described obturator further design is, described drawer door
Described obturator further designs and is, two sides, described revolving door left and right is arc surface.
Described obturator further designs and is, described revolving door is provided with corresponding to track one side the breach that holds this siding track side.
Obturator of the present invention carrys out joining rails drawer door by two lifting units, both can drive drawer door upper and lower translation, can drive drawer door two tie points to move different distance by two lifting units again makes drawer door produce the rotation of certain angle, make it to carry out plane on level or non-level different track airtight, strong adaptability; Also the revolving door by a pair of rotation carries out airtightly timely to the reserved space of track both sides simultaneously, need to when there is crisis situation, not go to find corresponding airtight and clog, and adapts to especially the emergency cut-off situation to subway tunnel; This is external while closing revolving door, can to drawer door, carry out locking simultaneously, and because drawer door is the bottom that is connected to main door leaf, main door leaf is all provided with blocking mechanism, drawer door is carried out to locking and make locking larger, and coupling mechanism force is evenly distributed, and locking is more reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structural representation of lifting unit.
Fig. 3 is the schematic diagram that a kind of interior threaded part in lifting unit is connected with screw rod.
Fig. 4 is the schematic diagram that the another kind of interior threaded part in lifting unit is connected with screw rod.
The lifting unit of Fig. 5 moves to the schematic diagram of plane on track downwards.
The downward translation of lifting unit of Fig. 6 is in conjunction with the schematic diagram that turns to plane on track.
Fig. 7 is track two side clearance schematic diagrames.
Fig. 8 is the structural representation of revolving door driving mechanism.
Fig. 9 is the structural representation of locking unit.
Figure 10 is the structural representation of another kind of lifting unit.
Figure 11 is the structural representation of another kind of revolving door driving mechanism.
The specific embodiment
as Fig. 1, apparatus of the present invention are arranged on the main door leaf below of partition door, have drawer door 7, two pairs of revolving doors 6 and drive respectively drawer door 7 and drawer door drive mechanism and the revolving door driving mechanism of revolving door 6 motions.
Track drawer door 7 is placed in door leaf 12 inner sides slidably, for the face sealing that makes mutually to slide, at the corresponding medial surface of door leaf, rubber sheet gasket is set.Track drawer door 7 is driven the motion of the lower retractable of making relative door leaf by drawer door drive mechanism, drawer door drive mechanism is formed by two lifting units 8, is separately positioned on the both sides of door leaf 12 bottoms.The lifting unit of the present embodiment is mainly by the worm gear 81, the worm screw 82 that are configured in casing 83 interior engagements, screw rod 84, the functional unit (not shown in FIG.) that is provided with the interior threaded part corresponding with screw thread on screw rod and is connected on worm-wheel shaft forms, referring to Fig. 2, this functional unit can adopt the handwheel 23 shown in Fig. 1, also can adopt other operating grips.Casing 83 is arranged on the bottom of door leaf 11, worm gear 81, worm screw 82 are assemblied in this casing 83 by corresponding bearing 841, interior threaded part is arranged on worm gear can two kinds of set-up modes: a kind of is, at worm gear 81 centers, internal thread hole is set, referring to Fig. 3, worm gear is except forming turbine and worm decelerator and also become an interior threaded part with worm engaging like this; Another kind is, at worm gear center, through hole 811 is set, and at least in worm gear one end, connects an interior threaded part, such as nut, referring to Fig. 4.Screw rod 84 is rotatably connected in interior threaded part, and it is hinged with the corresponding position of track drawer door 7 that casing 83 is stretched out in screw rod 84 one end.Handle manual operational unit and make worm-and-wheel gear transmission, worm gear rotates corresponding interior threaded part is rotated, and elevating lever moves up and down and drives track drawer door 7 relative door leaf lower ends as drawer, to do telescopic moving.Track drawer door 7 be moved downward to plane on track by hermetic door leaf lower surface to the space between plane on track, as Fig. 5.As different in the distance that the screw rod in two lifting units moves, track drawer door 7 will be done certain rotation, can adapt to the airtight requirement of non-horizontal rail face, and plane airtight on the track at track turning for example, as Fig. 6.
In order to keep preferably the sealing of door leaf and drawer door, on the bonding surface sliding corresponding to track drawer door 7 at door leaf, sealing mat 129(is set referring to Fig. 2), and two ends, drawer door left and right are designed to arc surface, when drawer door rotates, these both ends of the surface still can be tightly connected with corresponding sealing surface inside door leaf.
Use apparatus of the present invention to place airtight 03 in track both sides, in order to coordinate revolving door to seal the space of track 01 both sides.Travelling for subway train at ordinary times, between track 01 and airtight 03, need to leave gap 04, refer to Fig. 7, this gap is airtight by the revolving door 6 of two pairs of rotations that is separately positioned on the symmetrical both sides of underground railway track, and revolving door 6 is provided with the track breach 61 that holds this siding track side corresponding to track one side.Revolving door 6 is driven by revolving door driving mechanism, and as Fig. 8, this revolving door driving mechanism has intermeshing and heavy line part in the partial gear 61(Fig. 6 on revolving door circumference is set) and control member 62.As mentioned above, control member can be handwheel or handle etc., and the present embodiment adopts handwheel 62, and this handwheel is connected to the roller end of revolving door 6.Hand wheel 62, intermeshing by tooth on two revolving doors 6, revolving door 6 rotates to track one side, until track is contained to the space 04 of airtight track both sides.Or rotate to the orbital direction of leaving, revolving door is opened.Adopt revolving door 6 to carry out the reserved space of track both sides airtight timely, need to when there is crisis situation, not go airtight of searching correspondence and clog, adapt to especially the emergency cut-off situation to subway tunnel.
In order drawer door to be carried out to locking and door leaf coupling mechanism force to be evenly distributed, on revolving door driving mechanism, locking unit is set, as Fig. 9, this locking unit has crank 21 and connecting rod 20, crank is located in the rotating shaft of corresponding revolving door, one end of connecting rod connects lock pin 31, in drawer door one end, is provided with pin-and-hole 72, and during locking, lock pin 31 inserts in pin-and-hole 72.Because drawer door is the bottom that is connected to main door leaf, in order to snap close is carried out to by lock pin 31 in door leaf bottom, make the locking area of door leaf larger, coupling mechanism force is evenly distributed, and locking is more reliable.In order to keep the locking state of revolving door 6, at the correspondence position of revolving door 6 and door leaf 12, pin-and-hole is set respectively, then with pin 64, inserts in these two homoaxial holes the locking state of Reliable guarantee revolving door 6.
The present invention can also substitute some mechanisms in above-mentioned embodiment and form second embodiment.In second embodiment, adopt and be different from drawer door drive mechanism and the revolving door driving mechanism in the first embodiment scheme, other structures are all identical with the first embodiment, therefore repeat no more.
Drawer door drive mechanism in the present embodiment, as shown in figure 10, there are two lifting units 8, this lifting unit 8 is arranged on door leaf 12 bottoms and has casing 87, in it, be provided with the bevel gear of pair of meshing, the bevel gear that adopts pair of meshing diameter not wait in order to reach labour-saving object, wherein gear wheel 86 centers are fixedly connected with axle sleeve 862, this axle sleeve center is provided with screw and is rotationally connected with in casing 87 by bearing 861, the second screw rod 84 is screwed in the interior lower end of axle sleeve 862 and is connected with the drawer door 7 being plugged in door leaf 12, between drawer door 7 and door leaf 12 by being provided with sealing mat 18.Equally, cone pinion 85 is rotationally connected with in casing 87 by bearing 851, and this cone pinion shaft extension goes out fan 12 outsides and is connected with handwheel 87.When the space that need to open and close between plane on track and fan 12 lower surfaces, hand wheel 87, the bevel-gear rotating of pair of meshing, axle sleeve 862 rotates with large bevel gear, under the promotion of corresponding screw thread, screw rod 84 drives drawer door to move up and down, and realizes the open and close action of drawer door.For the gap between hermetic door leaf 12 and drawer door 7 better, be provided with sealing mat 128 with the side of drawer door 7 combinations door leaf 12 is corresponding.
The second revolving door driving mechanism of the present embodiment has intermeshing two pairs of gears, each gear 65 is independent of and the second revolving door 6, as shown in figure 11, every pair of gear connects in the rotating shaft of 65 the second revolving doors in correspondence, one control member is connected in the roller end of the second revolving door, the control member of the present embodiment is for adopting the shaft support of handwheel 66, the second revolving doors on the bearing 67 being connected on door leaf 12.Hand wheel 66, intermeshing by two gears 65, the second revolving door 6 rotates to track one side, until track is contained, the space 04(of airtight track both sides participates in Fig. 7).Or rotate to the orbital direction of leaving, the second revolving door is opened.

Claims (9)

1. the obturator of the main door leaf of Subway Tunnel protective airtight partition door below, it is characterized in that being arranged on the main door leaf below of partition door, comprise the drawer door sliding along described main door leaf inner seal, be separately positioned at least two pairs of revolving doors of the symmetrical both sides of underground railway track and drive respectively drawer door and drawer door drive mechanism and the revolving door driving mechanism of revolving door motion, described drawer door drive mechanism is arranged on main described main door leaf and the described drawer door that is in transmission connection, drive drawer door to move up and down or do the rotation of certain angle, described revolving door is rotatably connected on drawer door below correspondence position, described revolving door driving mechanism is arranged on drawer door, the revolving door that is in transmission connection is done corresponding rotation.
2. the obturator of the main door leaf of Subway Tunnel protective airtight partition door according to claim 1 below, it is characterized in that described drawer door drive mechanism comprises that two are located at two lifting units on described door leaf, one end of described two lifting units respectively with drawer door on corresponding position hinged.
3. the obturator of the main door leaf of Subway Tunnel protective airtight partition door according to claim 2 below, it is characterized in that described lifting unit comprises the casing that is arranged at door leaf, the worm gear that is arranged on engagement in casing with worm screw, be arranged at the interior threaded part on described worm gear, the second screw rod and the control member of vertical placement, described the second screw rod connects worm gear and lower end and track drawer door hinge by interior threaded part and connects, and control member is connected on worm shaft.
4. the obturator of the main door leaf of Subway Tunnel protective airtight partition door according to claim 2 below, it is characterized in that described lifting unit comprises the casing that is arranged at door leaf, be arranged on the bevel gear of the pair of meshing in casing, interior threaded part, vertical the second screw rod and the control member of placing, described interior threaded part is arranged on the bevel gear of vertical rotation axis in described bevel gear, described the second screw rod by interior threaded part with the bevel gear of described vertical rotation axis be connected and lower end and track drawer door hinge connect, described control member is connected in the bevel gear rotating shaft of horizontal rotating shaft.
5. the obturator of the main door leaf of Subway Tunnel protective airtight partition door according to claim 2 below, it is characterized in that described revolving door driving mechanism comprises partial gear and the control member on intermeshing setting and described revolving door circumference, described control member is connected to the rotating shaft of described revolving door; Or revolving door driving mechanism comprises control member and intermeshing two pairs of gears, the every pair of gear be connected in the rotating shaft of two second corresponding revolving doors, a control member is connected in the roller end of the second revolving door.
6. the obturator of the main door leaf of Subway Tunnel protective airtight partition door according to claim 4 below, it is characterized in that described revolving door driving mechanism is provided with the second locking unit, described the second locking unit comprises crank and connecting rod, described crank center of rotation is located on one second revolving door axis, and one end and the crank of described connecting rod are hinged.
7. according to the obturator of the main door leaf of the Subway Tunnel protective airtight partition door described in claim 1-6 any one below, it is characterized in that described drawer door.
8. according to the obturator of the main door leaf of the Subway Tunnel protective airtight partition door described in claim 1-6 any one below, it is characterized in that two sides, described revolving door left and right is arc surface.
9. according to the obturator of the main door leaf of the Subway Tunnel protective airtight partition door described in claim 1-6 any one below, it is characterized in that described revolving door is provided with corresponding to track one side the breach that holds this siding track side.
CN201310691762.6A 2013-12-17 2013-12-17 Obturator below the main door leaf of protective airtight partition door for subway district CN103628793B (en)

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CN201310691762.6A CN103628793B (en) 2013-12-17 2013-12-17 Obturator below the main door leaf of protective airtight partition door for subway district

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CN201310691762.6A CN103628793B (en) 2013-12-17 2013-12-17 Obturator below the main door leaf of protective airtight partition door for subway district

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CN103628793B CN103628793B (en) 2016-04-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106284207A (en) * 2016-09-06 2017-01-04 深圳市中科智诚科技有限公司 A kind of high steady type flood protection device for flood control works
CN110541634A (en) * 2018-05-29 2019-12-06 比亚迪股份有限公司 Locking mechanism for sliding plug door, sliding plug door and vehicle
CN110644867A (en) * 2019-10-14 2020-01-03 南京康尼机电股份有限公司 Electric pressing locking device, and control system and control method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0723617B2 (en) * 1992-09-11 1995-03-15 正之 浅野 Flood prevention shield
US5433031A (en) * 1994-04-06 1995-07-18 Mark Iv Transportation Products Corporation Resilient edges for power operated doors
JPH08260833A (en) * 1995-03-27 1996-10-08 Fuji Seiko Honsha:Kk Waterproofing door device
CN200975190Y (en) * 2006-11-22 2007-11-14 中国人民解放军总参谋部工程兵第四设计研究院 Flooding proof protective closed partition door for rigidity contact net current collection subway interval
CN101666242A (en) * 2009-09-24 2010-03-10 中国人民解放军总参谋部工程兵第四设计研究院 Hydraulic vertically rotary airtight flood and preventive partition door in metro running
CN201599060U (en) * 2009-09-24 2010-10-06 中国人民解放军总参谋部工程兵第四设计研究院 Hydraulic vertical-rotatable type anti-submerging protective closed isolation door in metro sections
CN203022578U (en) * 2012-12-20 2013-06-26 上海地空防护设备有限公司 Bottom sealing board structure for protective air-tight portioning door of subway interval
CN103231110A (en) * 2013-05-14 2013-08-07 中国人民解放军总参谋部工程兵第四设计研究院 Busbar cut-off device used for vertical rotation type anti-flooding door of subway
CN203701895U (en) * 2013-12-17 2014-07-09 中国人民解放军理工大学 Sealing device at lower part of main door leaf of metro protective airtight partition door

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0723617B2 (en) * 1992-09-11 1995-03-15 正之 浅野 Flood prevention shield
US5433031A (en) * 1994-04-06 1995-07-18 Mark Iv Transportation Products Corporation Resilient edges for power operated doors
JPH08260833A (en) * 1995-03-27 1996-10-08 Fuji Seiko Honsha:Kk Waterproofing door device
CN200975190Y (en) * 2006-11-22 2007-11-14 中国人民解放军总参谋部工程兵第四设计研究院 Flooding proof protective closed partition door for rigidity contact net current collection subway interval
CN101666242A (en) * 2009-09-24 2010-03-10 中国人民解放军总参谋部工程兵第四设计研究院 Hydraulic vertically rotary airtight flood and preventive partition door in metro running
CN201599060U (en) * 2009-09-24 2010-10-06 中国人民解放军总参谋部工程兵第四设计研究院 Hydraulic vertical-rotatable type anti-submerging protective closed isolation door in metro sections
CN203022578U (en) * 2012-12-20 2013-06-26 上海地空防护设备有限公司 Bottom sealing board structure for protective air-tight portioning door of subway interval
CN103231110A (en) * 2013-05-14 2013-08-07 中国人民解放军总参谋部工程兵第四设计研究院 Busbar cut-off device used for vertical rotation type anti-flooding door of subway
CN203701895U (en) * 2013-12-17 2014-07-09 中国人民解放军理工大学 Sealing device at lower part of main door leaf of metro protective airtight partition door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106284207A (en) * 2016-09-06 2017-01-04 深圳市中科智诚科技有限公司 A kind of high steady type flood protection device for flood control works
CN106284207B (en) * 2016-09-06 2018-10-30 泉州台商投资区春凯机械科技有限公司 A kind of high steady type flood protection device for flood control works
CN110541634A (en) * 2018-05-29 2019-12-06 比亚迪股份有限公司 Locking mechanism for sliding plug door, sliding plug door and vehicle
CN110644867A (en) * 2019-10-14 2020-01-03 南京康尼机电股份有限公司 Electric pressing locking device, and control system and control method thereof

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