CN103693538B - Intelligent pneumatic landing door system - Google Patents

Intelligent pneumatic landing door system Download PDF

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Publication number
CN103693538B
CN103693538B CN201210374426.4A CN201210374426A CN103693538B CN 103693538 B CN103693538 B CN 103693538B CN 201210374426 A CN201210374426 A CN 201210374426A CN 103693538 B CN103693538 B CN 103693538B
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China
Prior art keywords
layer door
grip block
landing door
piston rod
door system
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CN201210374426.4A
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CN103693538A (en
Inventor
邓浩斌
霍俊超
吕智强
郭奕珉
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Hitachi Elevator China Co Ltd
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Hitachi Elevator China Co Ltd
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Abstract

The invention discloses an intelligent pneumatic landing door system. The intelligent pneumatic landing door system comprises a landing door locking mechanism, a landing door sliding mechanism, an electric control mechanism, a pneumatic landing door self-closing mechanism and a landing door opening protection mechanism, wherein the pneumatic landing door self-closing mechanism comprises an air cylinder and a piston rod which are in axial hole match, the air cylinder is fixedly arranged on a landing door guiding rail rack of the landing door sliding mechanism, the piston rod comprises a big-diameter section and a small-diameter section, and the outer end part of the small-diameter section is in connected linkage with a landing door hanging plate of the landing door sliding mechanism through a connecting member; the landing door opening protection mechanism comprises an upper clamping block and a lower clamping block which are arranged symmetrically and movably, the piston rod penetrates through a gap between the upper clamping block and the lower clamping block, and the big-diameter section of the piston rod is in abutted-contact interference fit with the upper clamping block and the lower clamping block which are in a closed status. The intelligent pneumatic landing door system has the advantages that the accuracy of transmission and locating is higher, the difficulty of electric control is reduced, the stroke is short, and the service life is long; the intelligent pneumatic landing door system has a landing door opening protection function, so that the safety of the operation of operating personnel is guaranteed; meanwhile, the structure is of a non-contact type, so that the noise is lower, and the wear is less; the intelligent pneumatic landing door system has the functions of alarming and lighting.

Description

Intelligent pneumatic power layer door system
Technical field
The present invention relates to a kind of layer door system, belong to elevator special equipment technical field, refer in particular to a kind of intelligent pneumatic power layer door system.
Background technology
On market today, elevator landing door system is generally all provided with layer door self-closing device, usually adopts spring self-closing device or gravity self-closing device.Wherein, though spring self-closing device cost force of gravity self-closing device is low, but its structure can progressively agingly even lose efficacy as time goes by, and higher to the requirement of electrical control; And although the requirement of gravity self-closing device to electrical control is relatively low, its structural rate spring self-closing device is complicated, and cost is also high.
On the other hand, existing layer door system is also all provided with a layer door opening protecting apparatus, is generally contact type structure; re-pack when car arrives leveling zone and make pin action; layer door smooth opening, when car is not at leveling zone, pin makes layer door can not open in certain position.But; there is following problems in the layer door opening protecting apparatus of this structure; namely re-pack each when arriving leveling zone; need contact with bar component; easy generation noise and parts depreciation; and when car at the regular dither vibrations of boots and guide rail (such as lead abnormal) and abnormal dither (such as earthquake), have the risk that device damages, there is great potential safety hazard.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough, provide a kind of simple and compact for structure, be active in one's movements, the intelligent pneumatic power layer door system of safe and practical reliable, long service life.
To achieve these goals, the present invention realizes according to following technical scheme:
A kind of intelligent pneumatic power layer door system, includes a layer door lock mechanism, layer door slipping mechanism, electrical control mechanism, and layer door is pneumatic from locking mechanism and layer door unlatching protection mechanism, wherein:
Pneumatic inflator and the piston rod including shaft hole matching from locking mechanism of described layer door, inflator is fixedly installed on the layer door guide rail bracket of layer door slipping mechanism, piston rod includes large footpath section and path section, and the outer end of path section is connected interlock by attaching parts with layer every boatswain chair of layer door slipping mechanism;
Described layer door is opened protection mechanism and is included the symmetrical movable upper grip block that arranges and lower grip block, and above-mentioned piston rod is fed through the gap between grip block and lower grip block and its large footpath section forms contact with the upper grip block of closure state with lower grip block contacts interference fit.
Further, described upper grip block is not connected with the guide chute slippage be arranged on layer door guide rail bracket with the same one end portion of lower grip block and coordinates, opposed end is connected with the linked component be arranged on layer door guide rail bracket respectively and coordinates, and middle part is respectively arranged with the arc recess that footpath large with piston rod section adapts to coordinate; And described upper grip block and lower grip block respectively in be provided with the magnet coil be electrically connected with electrical control mechanism.
Further, described linked component includes rotating disk, upper two connecting rods and lower two connecting rods, wherein, disk axes position is flexibly connected with layer door guide rail bracket by revolving part, the one body of rod of upper two connecting rods is flexibly connected with rotating disk, another body of rod is flexibly connected with upper grip block, and the one body of rod of lower two connecting rods is flexibly connected with rotating disk and the connection bit of this connection bit and upper two connecting rods and rotating disk is symmetrical relative to disk axes, and another body of rod is flexibly connected with lower grip block.
Further; described layer door is opened protection mechanism and is also included manual opening assembly; manual opening assembly includes retracing spring, pull bar, stay cord and positioning support; wherein; pull bar activity is fed through positioning support; its two ends are connected with lower grip block and stay cord respectively and coordinate, and it is outside and between lower grip block and positioning support that retracing spring activity is set in pull bar.
Further, described layer door system also includes non-leveling zone warning circuit, described non-leveling zone warning circuit includes warning power supply, annunciator, first Alarm contactor, second Alarm contactor and conduction ring plate, wherein, first Alarm contactor is arranged at layer door and opens on the grip block of protection mechanism, second Alarm contactor and conduction ring plate are arranged at the crossover position of the pneumatic large footpath section of the piston rod from locking mechanism of layer door and path section, when the upper grip block that this crossover position and layer door open protection mechanism contacts with lower grip block contact, the first Alarm contactor and the second Alarm contactor conducting are formed to report to the police and are connected in series loop.
Further, described layer door system also includes lighting circuit, described layer door system also includes lighting circuit, described lighting circuit includes mains lighting supply, starting switch, normally closed interlock, coil and coiled contact, illuminating lamp and plug-in switch, wherein, plug-in switch includes latch part and switch sections, after starting switch and coiled contact parallel connection again with above-mentioned normally closed interlock, coil, the switch sections serial connection of illuminating lamp and plug-in switch, the latch part of plug-in switch is fixedly connected with layer every boatswain chair, the electric conductor that switch sections is provided with discontiguous two electroconductive elastic sheets each other and contacts with electroconductive elastic sheet clutch respectively.
Further, pneumatic also the including from locking mechanism of described layer door is arranged at the inflator left backing block at two ends, left and right and right backing block inside, and the inner end of piston rod is provided with an annular piston head.
Compared with prior art, its beneficial effect is in the present invention:
1, the pneumatic function of self closing of layer door, be different from the self-closing structure of existing gravity or the self-closing structure of spring, transmission positioning precision is more accurate, and electrical control difficulty reduces, and stroke is short, long service life;
2, layer door opens defencive function, and use three angled spoons to open layer behind the door at non-leveling zone, limiting layer door opens progress, judged whether to continue to open by operating personal, avoid surprisingly falling into hoistway, ensure the safe in operation of operating personal, this structure is contactless simultaneously, and noise is lower, and wearing and tearing are less;
3, have warning and illumination functions concurrently, for operating personal provides warning, handled easily person works, increases safety factor.
In order to the present invention can be understood more clearly, below with reference to accompanying drawing, elaboration the specific embodiment of the present invention is described.
Accompanying drawing explanation
Fig. 1 is of the present invention in the structural representation of closed condition.
Fig. 2 is the construction profile schematic diagram that Fig. 1 middle level door opens protection mechanism.
Fig. 3 is the structural representation of non-leveling zone warning circuit.
Fig. 4 is the structural representation of lighting circuit.
Fig. 5 is the structural representation that the present invention normally opens in leveling zone.
Fig. 6 is that the present invention unblanks in non-flat bed region layer door the structural representation of guard mode.
Fig. 7 is that the present invention opens the structural representation of layer door completely in special operational.
Fig. 8 is the construction profile schematic diagram that Fig. 7 middle level door opens protection mechanism.
Fig. 9 is the structural representation of non-leveling zone warning circuit trigger state.
Figure 10 is that non-leveling zone warning circuit removes the structural representation triggered.
Figure 11 is the structural representation of lighting circuit work.
Detailed description of the invention
As shown in Figures 1 to 4, intelligent pneumatic power layer door system of the present invention, includes layer door lock mechanism 1, layer door slipping mechanism 2, electrical control mechanism, and layer door is pneumatic from locking mechanism 3 and layer door unlatching protection mechanism 4.
Pneumatic inflator 31 and the piston rod 32 including shaft hole matching from locking mechanism 3 of above-mentioned layer door, inflator 31 is fixedly installed on the layer door guide rail bracket 21 of layer door slipping mechanism, it is provided with left backing block 33 and right backing block 34 in two ends, left and right inside, piston rod 32 includes large footpath section 321 and path section 322, the outer end of path section 322 is connected interlock by attaching parts with layer every boatswain chair 22 of layer door slipping mechanism, and the inner end of large footpath section 321 is provided with an annular piston head 35.
Above-mentioned layer door is opened protection mechanism 4 and is included the upper grip block 41 of symmetrical movable setting and lower grip block 42, upper grip block 41 is not connected with guide chute 43 slippage be arranged on layer door guide rail bracket 21 with the same one end portion of lower grip block 42 and coordinates, opposed end is connected with the linked component be arranged on layer door guide rail bracket 21 respectively and coordinates, middle part is respectively arranged with the arc recess that footpath large with piston rod section adapts to coordinate, piston rod 32 is fed through the gap between the arc recess of grip block 41 and lower grip block 42 and its large footpath section 321 forms contact with the upper grip block 41 of closure state with lower grip block 42 contacts interference fit.
Further, described linked component includes rotating disk 44, upper two connecting rods 45 and lower two connecting rods 46, wherein, rotating disk 44 shaft core position is flexibly connected with layer door guide rail bracket 21 by revolving part, the one body of rod of upper two connecting rods 45 is flexibly connected with rotating disk 44, another body of rod is flexibly connected with upper grip block 41, and the one body of rod of lower two connecting rods 46 is flexibly connected with rotating disk 44 and the connection bit of this connection bit and upper two connecting rods 45 and rotating disk 44 is symmetrical relative to rotating disk 44 axle center, and another body of rod is flexibly connected with lower grip block 42.
As the preferred version of the present embodiment; layer door is opened protection mechanism and is had electronic and manual two kinds of control modes; wherein; the structure that electronic control mode adopts is in upper grip block 41 and lower grip block 42, arrange the magnet coil be electrically connected with electrical control mechanism respectively; when the solenoid is activated, because upper grip block 41 is identical with the polarity of lower grip block 42, automatic reverse is separated and unclamps.Manual manipulation mode is for arranging manual opening assembly 5, manual opening assembly 5 includes retracing spring 51, pull bar 52, stay cord 53 and positioning support 54, wherein, pull bar 52 activity is fed through positioning support 54, its two ends are connected with lower grip block 42 and stay cord 53 respectively and coordinate, and it is outside and between lower grip block 42 and positioning support 54 that retracing spring 51 activity is set in pull bar 52.
Preferably, described layer door system also includes non-leveling zone warning circuit 6, described non-leveling zone warning circuit 6 includes warning power supply, annunciator 61, first Alarm contactor 62, second Alarm contactor 63 and conduction ring plate 64, wherein, first Alarm contactor 62 is arranged at layer door and opens on the grip block of protection mechanism, second Alarm contactor 63 and conduction ring plate 64 are arranged at the crossover position of the pneumatic large footpath section of the piston rod from locking mechanism of layer door and path section, when the upper grip block that this crossover position and layer door open protection mechanism contacts with lower grip block contact, the first Alarm contactor 62 and the second Alarm contactor 63 conducting are formed to report to the police and are connected in series loop.
Preferably, described layer door system also includes lighting circuit 7, described lighting circuit 7 includes mains lighting supply, starting switch 71, normally closed interlock 72, coil 73 and coiled contact 74, illuminating lamp 75 and plug-in switch 76, wherein, plug-in switch 76 includes latch part 761 and switch sections 762, after starting switch 71 and coiled contact 74 parallel connection again with above-mentioned normally closed interlock 72, coil 73, the switch sections 762 of illuminating lamp 75 and plug-in switch is connected in series, the latch part 761 of plug-in switch 76 is fixedly connected with layer every boatswain chair 22, the electric conductor that switch sections 762 is provided with discontiguous two electroconductive elastic sheets each other and contacts with electroconductive elastic sheet clutch respectively.
Principle of work of the present invention is as described below:
1, layer door is normally opened at leveling zone.As shown in Figure 5, when car arrives leveling zone, the flat bed signal of electrical control mechanism makes layer door open the upper grip block of protection mechanism and the magnet coil of lower grip block obtains electric, oppositely be separated because two grip block polarity are identical and unclamp, therefore the large footpath section of piston rod 32 can not contact with lower grip block with upper grip block, non-leveling zone warning circuit can not be triggered, flat bed signal makes the normally closed interlock of lighting circuit disconnect simultaneously, even if so trigger starting switch and the plug-in switch of lighting circuit when layer door lock mechanism is unblanked, lighting circuit still can not be connected; And when the pneumatic annular piston head 35 from locking mechanism of layer door encounters right backing block 34, layer door is opened completely, play position-limiting action, simultaneously because pressure in inflator 31 is less than atmospheric pressure, therefore piston rod 32 can be made to automatically reset and layer door is closed prior to gate.
2, non-leveling zone special opening.As shown in Figure 6, three angled spoons are used to open a layer door lock mechanism, then left and right layer door is pulled toward the left and right sides, because piston rod 32 is connected interlock with right side layer every boatswain chair 22, therefore piston rod 32 also stretches out to the right thereupon, until the crossover position between the large footpath section of piston rod 32 and path section contacts with lower grip block contact with upper grip block, limited cannot the continuation of piston rod 32 moves to right, now, layer door is unlatching one gap, operator cannot pass through, but situation in hoistway can be observed by gap, if judge that stopping enters hoistway, then unclamp layer door, because in inflator 31, pressure is less than atmospheric pressure, therefore piston rod 32 can be made to automatically reset and layer door is closed automatically, as Fig. 7, shown in 8, if judge that needs continue to enter hoistway, so only need pull downwards stay cord 53, stay cord 53 drives lower grip block 42 compression reseting spring 51 to move down by pull bar 52, meanwhile, lower grip block 42 drives upper grip block 41 upwards synchronizing moving by linked component, upper grip block 41 contacts until can not be interfered with the large footpath section of piston rod 32 with lower grip block 42, thus release piston rod 32, layer door can continue to open until open completely, and decontrol stay cord 53, due to the restoring force effect of retracing spring 51, lower grip block 41 and upper grip block 42 will reset.
Non-leveling zone warning circuit.As shown in Figure 9, when piston rod 32 move to right contact with lower grip block contact to the crossover position between large footpath section and path section with upper grip block time, first Alarm contactor 62 and the second Alarm contactor 63 are connected by conduction ring plate, namely warning circuit forms loop, annunciator 61 ring, reminds operator to carry out safe in operation; As shown in Figure 10, open layer door as continued and enter hoistway, upper grip block and lower grip block is separated by stay cord, because the large footpath section of piston rod 32 does not contact with lower grip block with upper grip block, first Alarm contactor 62 and the second Alarm contactor 63 disconnect, i.e. alarm loop cutoff circuit, stop alarm.
Lighting circuit.As shown in figure 11, when use three angled spoon opens layer door lock mechanism, the frame 11 of unblanking of layer door lock mechanism promotes starting switch 71 conjunction and closes, afterwards, along with the oppositely movement of double-vane layer door, the latch part 761 of plug-in switch 76 departs from switch sections 762, i.e. switch sections 762 conducting, thus formation loop connected by whole lighting circuit, illuminating lamp is shinny, meanwhile, coil 73 obtains electric, coiled contact 74 also closes and closes, therefore when frame 11 of unblanking resets, when starting switch disconnects again, whole lighting circuit is still in on-state, until layer door is closed, the latch part 761 of plug-in switch 76 reinserts switch sections 762, cut off plug-in switch 76 to connect, lighting circuit just disconnects on-state, coiled contact 74 dead electricity disconnects again.
The present invention is not limited to above-mentioned embodiment, if not departing from the present invention to various change of the present invention or modification is spirit and scope, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.

Claims (7)

1. an intelligent pneumatic power layer door system, includes a layer door lock mechanism, layer door slipping mechanism and electrical control mechanism, it is characterized in that: also include layer door pneumatic from locking mechanism and layer door unlatching protection mechanism, wherein:
Pneumatic inflator and the piston rod including shaft hole matching from locking mechanism of described layer door, inflator is fixedly installed on the layer door guide rail bracket of layer door slipping mechanism, piston rod includes large footpath section and path section, and the outer end of path section is connected interlock by attaching parts with layer every boatswain chair of layer door slipping mechanism;
Described layer door is opened protection mechanism and is included the symmetrical movable upper grip block that arranges and lower grip block, and above-mentioned piston rod is fed through the gap between grip block and lower grip block and its large footpath section forms contact with the upper grip block of closure state with lower grip block contacts interference fit.
2. intelligent pneumatic power layer door system according to claim 1, it is characterized in that: described upper grip block is not connected with the guide chute slippage be arranged on layer door guide rail bracket with the same one end portion of lower grip block and coordinates, opposed end is connected with the linked component be arranged on layer door guide rail bracket respectively and coordinates, and middle part is respectively arranged with the arc recess that footpath large with piston rod section adapts to coordinate; And described upper grip block and lower grip block respectively in be provided with the magnet coil be electrically connected with electrical control mechanism.
3. intelligent pneumatic power layer door system according to claim 2, it is characterized in that: described linked component includes rotating disk, upper two connecting rods and lower two connecting rods, wherein, disk axes position is flexibly connected with layer door guide rail bracket by revolving part, the one body of rod of upper two connecting rods is flexibly connected with rotating disk, another body of rod is flexibly connected with upper grip block, the one body of rod of lower two connecting rods is flexibly connected with rotating disk and the connection bit of this connection bit and upper two connecting rods and rotating disk is symmetrical relative to disk axes, and another body of rod is flexibly connected with lower grip block.
4. according to the arbitrary described intelligent pneumatic power layer door system of claims 1 to 3; it is characterized in that: described layer door is opened protection mechanism and also included manual opening assembly; manual opening assembly includes retracing spring, pull bar, stay cord and positioning support; wherein; pull bar activity is fed through positioning support; its two ends are connected with lower grip block and stay cord respectively and coordinate, and it is outside and between lower grip block and positioning support that retracing spring activity is set in pull bar.
5. according to the arbitrary described intelligent pneumatic power layer door system of claims 1 to 3, it is characterized in that: also include non-leveling zone warning circuit, described non-leveling zone warning circuit includes warning power supply, annunciator, first Alarm contactor, second Alarm contactor and conduction ring plate, wherein, first Alarm contactor is arranged at layer door and opens on the grip block of protection mechanism, second Alarm contactor and conduction ring plate are arranged at the crossover position of the pneumatic large footpath section of the piston rod from locking mechanism of layer door and path section, when the upper grip block that this crossover position and layer door open protection mechanism contacts with lower grip block contact, the first Alarm contactor and the second Alarm contactor conducting are formed to report to the police and are connected in series loop.
6. according to the arbitrary described intelligent pneumatic power layer door system of claims 1 to 3, it is characterized in that: also include lighting circuit, described layer door system also includes lighting circuit, described lighting circuit includes mains lighting supply, starting switch, normally closed interlock, coil and coiled contact, illuminating lamp and plug-in switch, wherein, plug-in switch includes latch part and switch sections, after starting switch and coiled contact parallel connection again with above-mentioned normally closed interlock, coil, the switch sections serial connection of illuminating lamp and plug-in switch, the latch part of plug-in switch is fixedly connected with layer every boatswain chair, the electric conductor that switch sections is provided with discontiguous two electroconductive elastic sheets each other and contacts with electroconductive elastic sheet clutch respectively.
7. intelligent pneumatic power layer door system according to claim 1, is characterized in that: pneumatic also the including from locking mechanism of described layer door is arranged at the inflator left backing block at two ends, left and right and right backing block inside, and the inner end of piston rod is provided with an annular piston head.
CN201210374426.4A 2012-09-27 2012-09-27 Intelligent pneumatic landing door system Active CN103693538B (en)

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CN103693538B true CN103693538B (en) 2015-07-22

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104828682B (en) * 2015-05-08 2017-01-04 吴江骏达电梯部件有限公司 A kind of elevator of band maltilevel security device
US11040858B2 (en) 2018-05-01 2021-06-22 Otis Elevator Company Elevator door interlock assembly
US11040852B2 (en) 2018-05-01 2021-06-22 Otis Elevator Company Elevator car control to address abnormal passenger behavior
US11155444B2 (en) 2018-05-01 2021-10-26 Otis Elevator Company Elevator door interlock assembly
US11046557B2 (en) 2018-05-01 2021-06-29 Otis Elevator Company Elevator door interlock assembly
US11034548B2 (en) 2018-05-01 2021-06-15 Otis Elevator Company Elevator door interlock assembly
US11760604B1 (en) 2022-05-27 2023-09-19 Otis Elevator Company Versatile elevator door interlock assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033646A2 (en) * 1980-01-31 1981-08-12 PLC Peters Limited Control mechanisms for pneumatic apparatus
CN1031357A (en) * 1987-05-21 1989-03-01 维特兰制造公司 Hydraulic door opening or closing device
US5129486A (en) * 1990-10-31 1992-07-14 Otis Elevator Company Elevator door lock
CN2550336Y (en) * 2002-06-02 2003-05-14 中国矿业大学 High riliability automatic safety door

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033646A2 (en) * 1980-01-31 1981-08-12 PLC Peters Limited Control mechanisms for pneumatic apparatus
CN1031357A (en) * 1987-05-21 1989-03-01 维特兰制造公司 Hydraulic door opening or closing device
US5129486A (en) * 1990-10-31 1992-07-14 Otis Elevator Company Elevator door lock
CN2550336Y (en) * 2002-06-02 2003-05-14 中国矿业大学 High riliability automatic safety door

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