CN201499014U - Elevator car top power source - Google Patents

Abstract

The utility model discloses an elevator car top power source, which comprises a case, a transformation rectifying circuit, a storage battery and a power supply switching protection circuit. The transformation rectifying circuit, the storage battery and the power supply switching protection circuit are arranged in the case, the power supply switching protection circuit which can be switched between a normal power supply mode and a storage battery emergency power supply mode is provided with a plurality of groups of output terminals of low-voltage direct-current power sources, the case is arranged on the top portion of an elevator car, an input end of the transformation rectifying circuit is connected with an output end of a machine room distribution box through traveling cables, a position sensor on the elevator car is connected with a group of output terminals of the power supply switching protection circuit, and a built-in alarm bell and a trigger circuit are further arranged in the case. The case arranged on the top portion of the elevator car can directly supply power for the elevator car, thereby being capable of reducing quantities of the traveling cables, reducing cost and being favorable for prolonging service life of the traveling cables. In addition, the built-in alarm bell driven by the trigger circuit simplifies connecting wires and reduces risk that a button of the alarm bell is burnt out.

Description

Elevator sedan-chair top power supply

Technical field

The utility model relates to a kind of supply unit that low-voltage dc power supply is provided, and especially relates to a kind of elevator sedan-chair top power supply that can be used for providing DC power supply to lift car.

Background technology

Generally, the electric power system of lift car as shown in Figure 2, cage illumination lamp 10 electrical equipment such as grade are by the machine room distribution box of being located in the elevator(lift) machine room 5, power of computer room 1a and elevator control panel 17 etc. provide power supply by trailing cable 6, wherein machine room distribution box 5 can provide 220 volts of mains supplies, and power of computer room 1a converts 220 volts of alternating currents that machine room distribution box 5 provides to some groups of low-voltage direct out-put supplies by transformation rectification circuit 2 and power supply switch protecting circuit 4, simultaneously, owing to be provided with storage battery 3 in the power of computer room 1a, therefore power of computer room 1a can automatically switch between normal power supply pattern (promptly providing power supply by machine room distribution box 5) and emergency service pattern (promptly by storage battery 3 power supplies) by power supply switch protecting circuit 4, the cab emergency light 11 of elevator, cab alarm bell 8 and talkback system (comprise machine room main frame 16, sedan-chair pushes up secondary machine 13, the secondary machine 14 of operation panel, secondary machine 15 at the bottom of the sedan-chair) 12 volts of required DC power supply divide three the tunnel to provide by power of computer room 1a, they need the six roots of sensation is connected to lift car from machine room trailing cable, intercom machine room main frame 16 is wherein directly powered by power of computer room 1a, simultaneously, push up secondary machine 13 for the sedan-chair of being located in the lift car by trailing cable 6, secondary machine 14 power supplies of secondary machine 15 and operation panel at the bottom of the sedan-chair; Cage illumination lamp 10 then is directly to be powered by two trailing cables 6 by the machine room distribution box 5 of being located at machine room; In addition, because the elevator control panel 17 in the machine room is provided with 24 volts of DC power supply, for simplifying the circuit of power of computer room 1a, position transducer 7 24 volts of required DC power supply on the lift car are by 6 power supplies of two trailing cables by elevator control panel 17, therefore need ten trailing cables 6 altogether, because the quantity of trailing cable 6 is many, thereby cause Heavy Weight, the cost height of trailing cable 6, simultaneously to having a negative impact its useful life.

The utility model content

The utility model is that the trailing cable quantity that existing power of computer room exists is many in order to solve, Heavy Weight, problem that cost is high, a kind of trailing cable quantity that significantly reduces elevator is provided, reduces its cost, and the effective elevator sedan-chair top power supply in prolongation trailing cable useful life.

To achieve these goals; the utility model is by the following technical solutions: a kind of elevator sedan-chair top power supply; comprise cabinet and be located at the interior transformation rectification circuit of cabinet; storage battery; power supply switch protecting circuit; the power supply switch protecting circuit that can automatically switch between normal power supply and storage battery emergency service pattern is provided with some groups and alarm bell; the lead-out terminal of the low-voltage dc power supply of respective load such as car emergency light coupling; described cabinet is located at elevator car roof; the input of transformation rectification circuit is connected by the output of trailing cable with the machine room distribution box, and the position transducer on the lift car is connected with one group of lead-out terminal of power supply switch protecting circuit.In order to reduce the quantity of trailing cable; the utility model moves to elevator sedan-chair top with the existing power of computer room of being located at elevator(lift) machine room; make it become elevator sedan-chair top power supply; and provide 220 volts of alternating current input power supplyings by two trailing cables by the machine room distribution box; this power supply can be the power supply of cage illumination lamp simultaneously; elevator sedan-chair top power supply can be powered respectively to the car emergency light of being located on the lift car by some groups of low-voltage dc power supplies of its power supply protection commutation circuit output; the alarm bell that is used to report to the police; be used for detecting the position transducer of elevator position and the sedan-chair of talkback system pushes up secondary machine; the secondary machine even load of secondary machine and operation panel at the bottom of the sedan-chair; and wherein one tunnel power supply that outputs to talkback system can be given the power supply of the intercom machine room main frame of being located at elevator(lift) machine room simultaneously by two trailing cables; therefore; elevator sedan-chair of the present utility model top power supply can obviously reduce the trailing cable quantity of whole system; reduce its weight, and help prolonging its useful life.When having a power failure owing to failure and other reasons; the power supply protection commutation circuit can arrive storage battery emergency service pattern with the normal power supply mode switch automatically; so that energy such as car emergency light, alarm bell, position transducer and talkback system emergency, thereby the realization of the emergency evacuation function of support elevator.

As preferably, the circuits for triggering that are provided with built-in alarm bell and are used to trigger alarm bell in the described cabinet, described alarm bell is electrically connected with one group of lead-out terminal on the power supply switch protecting circuit by circuits for triggering.Alarm bell is set directly in the cabinet of elevator sedan-chair top power supply, can simplify the connection of its circuit, simultaneously, in the time of need enabling alarm bell, alarm button is a start triggering circuit, drive alarm bell work by circuits for triggering, so the operating current of alarm bell can not flow through alarm button, reduce the risk that alarm button is burnt out.

As preferably, described power supply switch protecting circuit is provided with the lead-out terminal of four groups of low-voltage dc power supplies, and described lead-out terminal is electrically connected with position transducer, built-in alarm bell, talkback system and car emergency light respectively.Wherein the emergency service pattern only is provided for the power supply of car emergency light power supply for one group, when the utility model worked in the normal power supply pattern, the car emergency light can effectively be saved electric energy because the power supply of its connection is not exported and do not worked.

In sum, the utlity model has following beneficial effect: (1) is because elevator sedan-chair of the present utility model top power supply is arranged on the top of lift car, therefore can directly power to lift car, thereby significantly reduced the quantity of trailing cable, reduce cost, and helped prolonging the useful life of trailing cable; (2) alarm bell is located in the cabinet, and is driven by circuits for triggering, therefore, has simplified the wiring of alarm bell, has reduced the risk that alarm button is burnt out.

Description of drawings

Fig. 1 is the utility model circuit interconnect pattern in use;

Fig. 2 is the elevator(lift) machine room power supply winding diagram in use of prior art.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

In the embodiment shown in fig. 1; elevator sedan-chair of the present utility model top power supply comprises the cabinet 1 of being located at elevator car roof; be provided with the transformation rectification circuit 2 that adopts prior art in the cabinet 1; storage battery 3; power supply switch protecting circuit 4; transformation rectification circuit 2 is connected with power supply switch protecting circuit 4 by storage battery 3; power supply switch protecting circuit 4 is provided with four groups of lead-out terminals altogether; wherein three groups is 12 volts of direct current outputs; one group is 24 volts of direct current outputs; and wherein one group of 12 volts of direct currents output only has output under storage battery emergency service pattern; be connected with alarm bell of being located in the cabinet 18 and the circuits for triggering 9 that are used to drive alarm bell 8 in 12 volts outputs of another group in turn, the input of transformation rectification circuit 2 is connected with the output of machine room distribution box 5 in being located at elevator(lift) machine room by two trailing cables 6.

The utility model works in the normal power supply pattern when reality is used, with wherein one the tunnel be talkback system power supply 12 volts direct currents outputs directly be located at that sedan-chair on the car pushes up at the bottom of secondary machine 13, the sedan-chair secondary machine 15 and operation panel pair machine 14 is connected in parallel, and be connected with the machine room main frame 16 of being located at elevator(lift) machine room by two trailing cables 6; Another road only has 12 volts of direct current outputs car emergency light 11 direct and in the car of output to be connected under the emergency service pattern, and when faults such as appearance power failure, the utility model can automatically switch to storage battery emergency service pattern, thereby lights car emergency light 11; And Third Road is used to drive 12 volts of direct currents outputs of alarm bell 8 and is connected with car alarm button 12 and operation panel pair machine 14 by circuits for triggering 9, when abnormal conditions appear in elevator, the passenger can press car alarm button 12 to trigger the circuits for triggering 9 in the cabinet 1,9 of circuits for triggering drive alarm bell 8 work immediately, because 12 of car alarm buttons play trigger action, and the operating current of alarm bell 8 does not flow through car alarm button 12, therefore help reducing the possibility that it is burnt, prolong its useful life, simultaneously, 14 in the secondary machine of the operation panel that is connected with car alarm button 12 sends the calling model to the machine room main frame 16 of being located at machine room, and talkback system can begin to enable; The the four tunnel 24 volt of direct current output position transducer 7 then direct and on the car is connected; Cage illumination lamp 10 then directly is connected with the input of transformation rectification circuit 2.The supply line of whole elevator sedan-chair top power supply only needs four trailing cables 6, then needs ten trailing cables 6 in the identical power of computer room electric power system that is configured in prior art.When faults such as outage occur causes machine room distribution box 5 not export, the utility model can switch to storage battery emergency service pattern rapidly, therefore, but under the emergency service pattern, work in talkback system, alarm bell 8, position transducer 7,11 short time of car emergency light, thereby effectively ensure passenger's safety, help realizing the emergency evacuation function.

Claims (3)

1. elevator sedan-chair top power supply; comprise cabinet (1) and be located at the interior transformation rectification circuit (2) of cabinet (1); storage battery (3); power supply switch protecting circuit (4); the power supply switch protecting circuit (4) that can automatically switch between normal power supply and storage battery emergency service pattern is provided with some groups and alarm bell (8); the lead-out terminal of the low-voltage dc power supply of car emergency light respective load such as (11) coupling; it is characterized in that; described cabinet (1) is located at elevator car roof; the input of transformation rectification circuit (2) is connected by the output of trailing cable (6) with machine room distribution box (5), and the position transducer on the lift car (7) is connected with one group of lead-out terminal of power supply switch protecting circuit (4).

2. elevator sedan-chair according to claim 1 top power supply; it is characterized in that; the circuits for triggering (9) that are provided with built-in alarm bell (8) in the described cabinet (1) and are used to trigger alarm bell (8), described alarm bell (8) is electrically connected with one group of lead-out terminal on the switch protecting circuit (4) of powering by circuits for triggering (9).

3. elevator sedan-chair according to claim 1 and 2 top power supply; it is characterized in that; described power supply switch protecting circuit (4) is provided with the lead-out terminal of four groups of low-voltage dc power supplies, and described lead-out terminal is electrically connected with position transducer (7), built-in alarm bell (8), talkback system and car emergency light (11) respectively.

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