CN1015096B - Electric lift with self-adapting floor level function when power is off - Google Patents

Abstract

The present invention relates to a device which stores gravitational potential as stand-by energy source and is used for dragging an elevator car to reach a floor door position when power failure happens in the running course of an elevator. The dragging processes are divided into two sections, two traction machines are respectively used for dragging, wherein one section is a normal electrical power supply dragging section, and the section is used for dragging the elevator car to operate in the floor in normal power supply state. The other section is a stored energy stand-by section, the stored energy stand-by section is used for dragging the elevator car to reach floor and stopping the elevator car at the door position when power failure happens in the running course of the elevator. In the scheme, stand-by power devices which occupy special work rooms are not necessary to arrange additionally, so finite space is saved and repeating investment is avoided. The present invention has the advantages of low cost and high reliability, and is favorable for the improvement of common elevators.

Description

Electric lift with self-adapting floor level function when power is off

What the present invention relates to is a kind of in operation way during power failure, elevator that can the automatic storey searching entrance hall and elevator improved the new technical scheme that is proposed.

Elevator is in the operation way, if power supply is interrupted suddenly, lift car can not run to place, floor entrance hall, will will take advantage of people's (thing) of an elevator to be trapped in wherein, the method that prior art is removed above-mentioned predicament has three kinds, and one, security window is set, when the elevator power interruption, please the passenger from the elevator safety window, climb to entrance hall (referring to the 35th of the first ministerial standard JB816-74 of the Ministry of Machine-Building Industry elevator technology condition), so both dangerous, also inconvenient.Two, reserve generator group or air compressor unit are set, the general scale of this kind equipment is big, the cost height, and need often maintenance, reliability is relatively poor.(elevator company of the Japanese Toshiba technical scheme that the reserve generator group is set, the Germany curtain Buddhist nun elevator company technical scheme that the stand-by compressor group is set.Referring to No. 87203252 files of Chinese utility application bulletin).Three, standby battery and check weighing instrument are set or battery are set and power supply inverter, the technical scheme shortcoming that this class is made backup power with storage battery is: the general capacity of storage battery is little, dragging elevator seeks and reaches the floor entrance hall, just the cost height must be set, the check weighing instrument that is difficult for installing additional, might drag elevator with less current because only install check weighing instrument rear additional, otherwise with regard to handy many storage battery parallel connections power supply that is together in series, and the bigger charging equipment of power need be set often charge the battery, cost is higher like this, and the general life-span of storage battery is not oversize, must regularly replace, cause and repeat to cost, (insulting No. 85105540 files of Chinese invention patent of Electric Co., Ltd's application referring to Japan three).

In a word, the prior art scheme all is to solve the difficulty that lacks the energy when cutting off the power supply in the way with the method that reserve power equipment or backup power are set.These equipment generally all will take special workroom, because utility ratio is low, certainly will cause the waste of finite space, and above scheme maintenance is all arranged unavoidably, repeat to cost, invest big, be difficult for problem such as existing Retrofit of Elevator, so difficult popularization.

The purpose of this invention is to provide at above defective and deficiency a kind of economical and practical, be easy to the existing improved technical scheme of elevator and the way of developing by this scheme in outage automatic leveling elevator.

The object of the present invention is achieved like this: gravitional force is stored as stand-by power source, be used for elevator and drag lift car in when outage operation way and seek and reach the floor entrance hall.Elevator dragged be divided into two sections, drag by two towing machines respectively, wherein one section is the supply regular power section of dragging, this section just often drags lift car in power supply and moves in floor, another section is the energy storage dead section, this section is place in operation just during outage in elevator operation way only, seeks and reaches floor in order to drag lift car, and make it be parked in the entrance hall automatically.Dragging system according to outage automatic leveling elevator in the technical solution of the present invention design-calculated way, can be divided into four parts by function: one, by main towing machine, counterweight and dragged that body forms mainly drag part, its function is: in power supply just often, be used for dragging elevator and move at floor; Two, the standby part of forming by secondary towing machine and car that drags of energy storage, its function is: drag car by secondary towing machine, store certain potential energy, use during in order to outage; Three, to connect the middle coupling part that thing constitutes in the middle of the arbitrary structures, its function is: will mainly drag the standby part that drags of partial sum and be connected into as a whole; Four, by being installed in the secondary towing machine stop mechanism, the energy storage dead section actuating element that the control setup of independent its drg of open and close of energy and its annex are formed, its function is: when being used for cutting off the power supply, handle secondary traction machine brake action on the way, make its take-off the brake lock, start the energy storage dead section, the lift car by gravity slides downwards, and when car slided into the floor entrance hall, control setup dragged secondary traction machine brake action automatically, make its lock live secondary towing machine, car is parked in a position.Specific practice is: live car at lift car peripheral equipment upper ledge, than the framework about the high first floor of car.This framework is by leading boots and guide rail slidingly couple, upwards load onto recoil spring in base of frame, load onto secondary towing machine at car top, frame roof top with link in order to wirerope rope and its annex that drags the main towing machine that elevator moves in the building main body, the frame roof below links by secondary towing machine and its annex and lift car.Install a lever in order to the control band-type brake in the band-type brake mechanism of secondary towing machine additional, lever one end is fixed on the degree of tightness actuating mechanism of band-type brake, and trailing cable followed in the other end first line of a couplet, and the other end of trailing cable is connected on the mechanical clutch by pulley.This power-transfer clutch by be equipped with successively on the same axial line slide block, on hook, lower draw-bar, slide block, spring and on the bearing seat other near second slide block bottom axial line, by bearing pin, be equipped with mechanisms such as the joining right angle of bearing seat bars at the angle top end and form.First slide block top links with trailing cable, and below and last hook link: second slide block top links by bearing pin and lower draw-bar, and the below links by spring and attachment point; On the lower, transverse extended surface of second slide block, a feeler lever is housed.The 3rd slide block of its track and axis parallel is housed in other second the slide block top of above-mentioned axial line, pass this slide block and the spring that is fixed on the slide block, towards axial line be equipped with one with the feeler lever of this slide block slidingly couple, the other direction of this slide block is equipped with clutch control lever.When elevator in operation way during power interruption, passenger or driver control power-transfer clutch close lower draw-bar, drag trailing cable and lever, secondary towing machine band-type brake is unclamped, lift car glides, and when car slided into floor door position, power-transfer clutch separated automatically, secondary towing machine band-type brake closes, lock is lived secondary towing machine, and car is parked in a position, reaches the purpose of outage automatic leveling in the way.

Here install lever additional in the band-type brake mechanism of secondary towing machine, trailing cable is to move in order to the band-type brake of handling secondary towing machine with the purpose that power-transfer clutch is set, yet also has many kinds in order to the method for handling secondary towing machine band-type brake keying.The DC motor of an available miniwatt series excitation connection, storage battery, push switch, limitation travel switch, relays etc. replace above-mentioned mechanical clutch, and when having a power failure in the elevator way, the passenger can press push switch, relay contact closure, storage battery is powered to DC motor by relay contact, and motor rotates, and produces moment, drag trailing cable and lever, secondary towing machine band-type brake is unclamped, and lift car glides, and arrives the door position in several seconds, fixed door position feeler lever striking limitation travel switch, the relay outage, unclamp the contact, the DC machine outage, lose moment, secondary towing machine band-type brake closes, and lock is lived secondary towing machine, and lift car is parked in a position.The circuit that parts such as the also available inverter that boosted by storage battery, push switch, relay, limitation travel switch, power supply are formed is directly given the method for secondary towing machine electromagnetic brake power supply, handle secondary towing machine electromagnetic brake action, in order to reach power failure automatic leveling purpose in the way.Also the power supply inverter in the such scheme can be removed, use DC electromagnet instead, utilize the DC electromagnet push rod, or the secondary towing machine electromagnetic brake action of armature traction control, reach power failure automatic leveling purpose in the way.More than storage battery in several schemes only be that an electromagnetic brake action is powered, so capacity needn't be very big.The control setup of being made up of circuit also can link with element contacts such as the total starter of elevator power supply, can reach can start leveling device automatically when having a power failure in the way, makes the car automatic leveling be parked in the effect in entrance hall.

Certainly any other mechanism as long as its lift car that drags is walked up and down, can be parked in framework upper behind the last top in framework, can be in order to replace the above secondary towing machine; As long as it is indirect that the frame of any other structure, chamber, tube, face, hook can make lift car and connecting of main towing machine wirerope rope, connects thing in the middle of it and can replace said frame.

Advantage of the present invention is: utilize gravitional force to promote the car flat bed, thereby do not need to be provided with in addition reserve power equipment, save finite space, avoid repeating to cost, the reliability height is easy to conventional lift and improves.

Description of drawings:

Fig. 1 is that elevator proposed by the invention improves the technical scheme scheme drawing.

Fig. 2, the 3rd, elevator improves the embodiment scheme drawing

Fig. 4 is the mechanical clutch scheme drawing

Fig. 5 is the scheme drawing of the framework that installs additional among the embodiment

(1) is the mainly section of dragging of supply regular power in the accompanying drawing, (2) be the standby section of dragging of energy storage, (3) be main towing machine, (4) for mainly dragging the counterweight that part is joined, (5) be the wirerope rope of main towing machine, (6) for connecting the mainly middle connection thing of the section of dragging and the standby section of dragging of energy storage, (7) are the wirerope rope of secondary towing machine, and (8) are secondary towing machine.(9) be car, (10) be guide rail, (11) lever in secondary towing machine stop mechanism, installing additional, (12) for connecting the trailing cable of lever and power-transfer clutch, (13) are power-transfer clutch, (14) be right angle turning rod in the mechanical clutch, (15) for being fixed on the fixed door position feeler lever on the elevator hoistways, (16) are the original framework of lift car, and (17) are for being installed at the framework of car periphery, (18) for being contained in the boots of leading on the framework, (19) are for being contained in the energy disperser of base of frame.

Elevator is when normal operation, and the operation of lift car (9) between first floor and second floor dragged by secondary towing machine (8); The above part of second floor drags framework (17) and car (9) operation together by main towing machine (3); By lead limit switch control in the circuit, have only the car (9) of working as to run to framework (17) top, after touching spacing change-over swith, main towing machine (3) could start, to guarantee that car (9) is parked in framework (17) top, satisfy and store the potential energy needs, when power supply interrupted suddenly in elevator is moving on the way, elevator framework and car will stop on the way because of running out of steam together.Since framework (17) than the high first floor of lift car (9) about, therefore, where no matter elevator stops suddenly if operating in, in the coverage of framework (17), always have a floor door position therein by frame, at this moment, as long as passenger or driver start the automatic leveling operating mechanism, (or by circuit control).Power-transfer clutch (13) is closed, drag trailing cable (12), lever (11) action, secondary towing machine (8) band-type brake is unclamped, car (9) will speed limit glide in framework (17).When car (9) arrival floor door position, be fixed on fixed door position feeler lever (15) the striking power-transfer clutch right angle turning rod (14) on the elevator hoistways, power-transfer clutch is broken off relations separate, secondary towing machine band-type brake closes, and lock is lived secondary towing machine, and car is parked on the position.

Form mechanical clutch by (20) to (31) and members such as (14), (20) be that first slide block (21) is last hook, (22) are lower draw-bar, and (23) are second slide block, (24) be a feeler lever, (25) be a top spring, (26) are the 3rd slide block, and (27) are joystick, (28) for being contained in the contracted feeler lever on the 3rd slide block, (29) strike the post for the spacing of feeler lever of can contracting, (30) are joystick slide block retainer spring, and (31) are an extension spring.

Drawing the control lever (11) that installs additional in the machine band-type brake by slide block (20) trailing cable (12) with pair on the hook (21) on the power-transfer clutch links, under normal conditions, last hook is in released state with lower draw-bar (22), secondary towing machine band-type brake action is unrestricted, the right angle turning rod is worked by weight on the B end, the AB limit is in flat horizontal shape, during situation about in meeting the way, having a power failure, passenger or driver's drag down joystick (27) make the 3rd slide block (26), the feeler lever (28) that can contract moves downward, touch mutually with second slide block (23) on this feeler lever DE limit, the feeler lever (28) that can contract contracts in the 3rd slide block (26), when the feeler lever (28) that can contract moves to second slide block (23) below, the feeler lever that can contract stretches out under the promotion of spring, and be inserted into bottom second slide block (23), at this moment the operator loosens the downward thrust of joystick (27), and upwards lift joystick (27), this bar is given under the common effect of the external force of joystick (27) the pulling force that is subjected to spring (30) and operator with the 3rd slide block, upward movement, under the promotion of feeler lever (28) of can contracting, second slide block (23) and lower draw-bar (22) upward movement, be contained in the B end of feeler lever (24) the striking right angle turning rod (14) on this slide block, make right angle turning rod (14) upset, at this moment the AB limit of right angle turning rod is vertical, and the AC limit is flat horizontal.When lower draw-bar hooks hook, spacing the striking the post of feeler lever (28) FG limit striking (29) of can contracting, can contract in feeler lever indentation the 3rd slide block (26), second slide block loses uplift force, under the tension of spring (31), second slide block is gone up hook (21) in tow, lower draw-bar (22), move downward together, drive the lever (11) that installs additional in the secondary towing machine band-type brake by trailing cable (12), secondary towing machine band-type brake is unclamped, car (9) speed limit in framework (17) glides, when arrival floor door position, be installed in fixed door position feeler lever (15) striking right angle turning rod (14) the C end on the elevator hoistways, right angle turning rod (14) upset, at this moment, C holds contact striking lower draw-bar (22), lower draw-bar is broken off relations, secondary towing machine band-type brake closes, and lock is lived secondary towing machine, makes car be parked in a position.Thereby reach the purpose that the power failure automatic leveling is returned a position in the way.

Elevator improves embodiment 1

Certain high-rise restaurant, 3.2 meters of floor heights, former high 2.2 meters, dark 1.6 meters of the car that is equipped with, wealthy 1.8 meters elevator for increasing power failure automatic leveling function in the way, is loaded onto 5.8 meters high, than the wideer slightly framework (17) of former elevator frame outside lift car (9).This framework is formed (as shown in Figure 5) by 10 angle steel and 3 I-beam sections, this framework is opposite to the guide rail both sides by two, two angle steel parallel with guide rail, with lead boots (18) and guide rail (10) slidingly couple (as shown in Figure 2) at the quadruplet of adorning on this angle steel end on car (9) suspension apparatus, be inverted 2 tons on a TV-2 type has been installed electric block as secondary towing machine (8).Annexes such as electric block hook are fixed on the centre I-beam section of framework (17) upper end, near the motor magnet motion block of electric block band-type brake mechanism, install additional-the direct current hydraulic electromagnet of MY1-25 model, and the push rod of this hydraulic electromagnet is aimed at the motion block of motor magnet in the electric block band-type brake mechanism, change the hydraulic electromagnet coil parameter, it just can be started when connecting 12 volts of vdcs.In car internal control making sheet, install knob additional, relay.One storage battery is housed under car floor.The place loads onto protruding bridge shape feeler lever in each position of hoistway, installs additional-LX19-M type roller travel switch at the opposite position of lift car.The limit switch of electric block is adjusted the position, and the restriction electric block drags the range of car in framework.Above base of frame, load onto two pairs of recoil springs (19) that elasticity modulus is different.Annexes such as the wirerope rope (5) of framework (17) top and main towing machine and suspension apparatus link.Elevator after the repacking has increased power failure automatic leveling function in the way like this, and higher security insurance coefficient is arranged.

When in meeting the way, having a power failure, passenger or driver press the flat bed knob, relay contact closes, storage battery is given the power supply of direct current hydraulic electromagnet by contact, the electromagnet action, by hydraulic part power is amplified, push rod promotes the motion block of electromagnet in the electric block band-type brake, and band-type brake is unclamped, lift car (9) by gravity glides, when sliding into position, protruding bridge shape feeler lever striking roller travel switch makes the relay outage, direct current hydraulic electromagnet pusher retracted, the electric block band-type brake closes, and lock is lived electric block, and lift car is parked in a position.

In addition, because there is one deck subterranean room in this restaurant, and the zone of elevator prolonged application more than one deck, so lift car rests on framework upper here for a long time.Install framework (17) and energy disperser (19) additional and be and consider, because framework and the energy disperser effect adorned on framework can not cause serious accident, to keep the safety factor of former elevator yet just in case secondary traction section is out of order.

Embodiment 2

Certain skyscraper, the former JK-500 type passenger elevator that is equipped with is for increasing power failure automatic leveling function in the way.On car (9) top suspension device, be inverted and install 5 tons of electric blocks of a TV-5 type as secondary towing machine (8).The hook of electric block connects the wirerope rope (5) of thing (6) and former main towing machine as the centre, and suspension apparatus and annex link.Regulate the position of electric block upper limit position switch, making its range is 4 meters, in the car bottom 12 overhead accumulators are installed, each place, position installs a protruding bridge shape feeler lever additional at hoistway, install LX19-111 type roller travel switch additional in the corresponding position of lift car, the inversion boosting device that in the control desk of car, installs a knob, relay additional and form by electronic component.

When having a power failure in meeting the way, the passenger presses the automatic leveling knob, and relay contact closes, the direct current (DC) of storage battery becomes 220 volts of alternating current by the inversion boosting device, and gives the power supply of hoist ceiling crane band-type brake by relay contact, and band-type brake unclamps, lift car glides, during to the door position, protruding bridge shape feeler lever striking travel switch, relay outage, contact separately, the hoist ceiling crane brake-contracting cut-off, lock is lived electric block, and lift car is parked in a position.

Embodiment 3

One conventional lift is returned a position story-leveling function automatically for increasing to have a power failure in the way, installs framework (17) described in the class formula example 1 and secondary towing machine (8) outside car additional.On the moving magnet of secondary towing machine electromagnetic brake, load onto the lever made from steel plate (11).Lever one end is fixed by bolts on the moving magnet piece, and the other end connects a trailing cable (12), and this trailing cable links by pulley and mechanical clutch (13) shown in Figure 4, and this clutch device is in car on the control panel.

When having a power failure in the way, as long as the passenger promotes joystick (27), start automatic leveling mechanism, power-transfer clutch is closed, power-transfer clutch drags trailing cable (12) lever (11) action, the band-type brake of secondary towing machine (8) unclamps, and car (9) glides in framework (17), when lift car slides into position, power-transfer clutch (13) breaks off relations, the band-type brake of secondary towing machine (8) closes, and lift car is parked in a position, reaches power failure automatic leveling purpose in the way.

Experimental results show that this scheme is economical and practical, the very strong market competitiveness is arranged.

Claims (8)

1, a kind of by towing machine, car, guide rail, lead outage automatic leveling elevator in the way that the control of boots and electric power partly formed, it is characterized in that: in the dragging system of elevator, add and load onto a middle thing that connects, this centre connects thing elevator drive system is divided into two sections, drag by two towing machines respectively, this centre connects the thing top and links by main towing machine and its annex and high-rise main body, forms first section; The below connects with lift car by secondary towing machine and its annex, forms second section.

2, elevator according to claim 1 is characterized in that: the dragging system of this elevator is by main towing machine, counterweight; Secondary towing machine, the bridge railway carriage or compartment; The middle thing that connects that connects major-minor two towing machines; Additional control setup four parts of secondary traction machine brake are formed.

3, elevator according to claim 1, it is characterized in that: connecting thing in the middle of this elevator can be formed by being installed at the outer framework of lift car, this framework can be by leading boots and guide rail slip coupling, link by main towing machine and its annex and high-rise main body, link by secondary towing machine and its annex and lift car.

4, elevator according to claim 1, it is characterized in that: connecting thing in the middle of this elevator can be made up of hook and annex, the upper end of this hook links by the main machine and its annex and high-rise main body of draging, and the lower end links by secondary towing machine and its annex and lift car.

5, elevator according to claim 2, it is characterized in that: the drg of secondary towing machine adds control setup, can be by in band-type brake mechanism, installing lever additional and annex is formed, lever one end is fixed on the band-type brake moving magnet block mechanism, connect a trailing cable on the other end, trailing cable is connected with annexes such as power-transfer clutchs by pulley.

6, elevator according to claim 2 is characterized in that: the additional control setup of the drg of secondary towing machine can be by storage battery, push switch, relay, travel switch, and the power inverter increasing apparatus is formed.

7, elevator according to claim 2 is characterized in that: the additional control setup of the drg of secondary towing machine can be made up of storage battery, push switch, relay, travel switch and DC electromagnet.

8, elevator according to claim 4 is characterized in that: power-transfer clutch can be by DC motor, storage battery, push switch, and limitation travel switch, elements such as relay are formed.

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