CN100390039C

CN100390039C - Escape device used in lifter or elevator

Info

Publication number: CN100390039C
Application number: CNB2005100598035A
Authority: CN
Inventors: 王秋楠
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-31
Filing date: 2005-03-31
Publication date: 2008-05-28
Anticipated expiration: 2025-03-31
Also published as: CN1840462A

Abstract

The present invention provides a rescue device used in lifters or elevators, which is designed for the aim of rescuing insiders from dangers on the occasion of elevator failures. At least one group of standby coil group and a delayed lifting device are arranged in a permanent magnet drive motor of an elevator, wherein a standby power supplies power to the standby coil group so as to lead the standby coil group and a basic coil of the drive motor to operate separately or jointly. A main shaft of the delayed lifting device, which is sheathed with a braking component, is controlled to rotate by a control mechanism at one side so as to make the braking component relieve a brake or trigger an electromagnetic contactor, and thus, the elevator or a carriage of a lifter is delayed to lift and is stopped. The control mechanism is operated by an electromagnetic actuator or a manual wrench control grip. Matched with a resetting device pre-arranged corresponding to lifting tunnels of each floor, the control mechanism is reset so as to recovery the relative relation between the braking component and the brake and between the braking component and the electromagnetic contactor. Therefore, the carriage is delayed to brake till stop. The stop position can be corresponding to a proper leveling state of a floor, which is favorable for insiders to open a carriage door easily and escape from dangers.

Description

Elevator or elevator disposal device

Technical field

The invention relates to a kind of elevator or elevator disposal device, it mainly is by a spare coil group and a standby power, cooperate slow jacking system, a control mechanism and a re-setting device, can be when elevator or elevator et out of order, with electronic or manual mode of operation, make its compartment rely on re-setting device and progressive slow rising or drop to the floor tram, be beneficial to the internal staff and open the railway carriage or compartment door and get rid of poverty.

Background technology

Because the development of Building technology, buildings such as the office block of high floor, dwelling house and factory building, become the trend of building, and for the turnover of the contact of each floor and personnel, goods with up and down, this type of high floor building is provided with elevator or elevator more, makes the turnover of personnel and goods with more time saving and energy saving up and down.

Structure design with regard to existing elevator or elevator is seen it, be broadly divided into two classes, one are oil hydraulic cylinder control lifting, the person then is a motor counterweight operating mode in addition, the former is applicable to the building of low floor, the latter then more applies to high floor building, and the present invention designs at the elevator of motor counterweight operating mode or elevator, only is illustrated with regard to this type of elevator or elevator later on.

Present motor counter weight type elevator in design, mainly be to utilize the CD-ROM drive motor controlling and driving just taking turns, reversing Bing Jie braking device as driving wheel De Brake car, on drive wheel, be arranged with hawser, hawser one end is fixedly arranged on the elevator cage, it holds then in addition, and rank is provided with clump weight, utilize turning to of permanent magnetism CD-ROM drive motor controlling and driving wheel according to this and reach the function of operating the elevator cage lifting, when treating that the elevator cage lifting extremely is scheduled to floor, then Ji You braking device controlling and driving wheel stops, make the elevator cage stably be parked in the floor tram, be beneficial to personnel's turnover.

In addition, for the power failure situation of avoiding happening suddenly causes elevator to stop suddenly, cause the internal staff stranded; usually can be provided with standby power; provide the running of permanent magnetism CD-ROM drive motor required electric power with standby power, it must be got rid of poverty to make things convenient for the internal staff with the elevator operation lifting to nearest floor.

Aforesaid standby power is only under the normally functioning states of parts such as its permanent magnetism CD-ROM drive motor, beginning can be suitable for, if because of parts such as its permanent magnetism CD-ROM drive motor are damaged, fault and when causing elevator to stop, then its standby power is not brought into play effect at all, cause taking place the internal staff and lock into predicament in the elevator cage, though general elevator cage is provided with manually opened car door device the internal staff is escaped from, but if the elevator cage is not in the floor tram, then may be when internal staff's desire climbs out of in the compartment, the danger of falling accidentally, be with how when elevator stops because of power failure or fault, making internal staff's energy safety life saving, is to become the key subjects that desire of the present invention solves.

Summary of the invention

Because existing elevator or the elevator personnel when stopping in that power failure or fault take place get rid of poverty in the design, fail to provide desirable solution, contriver spy sets about researching and developing design, be engaged in the many years of experience and the technology of relevant industries based on it, finally grind and create elevator of the present invention or elevator disposal device, be that its main purpose is the composition design via structure, provide a kind of at elevator or elevator because of having a power failure or during fault, really controlled the slow safety device of reducing to the floor tram of elevator or cage lifter, make the internal staff be able to not have and open the railway carriage or compartment door under the situation of anxiety and escape from smoothly, to solve the predicament of stranded elevator in safety.

Another object of the present invention is to composition design via structure, make its no matter at elevator because of having a power failure or when stopping because of the parts fault, all can delay liter or reduce to the floor tram with asymptotic pattern, be beneficial to the internal staff and get rid of poverty with its elevator or elevator disposal device operation elevator.

A further object of the present invention is the composition design via structure, provides it to have electronic and manual two kinds of operation modes, avoids when the electric system et out of order, still is able to slow liter in manual mode of operation compartment or slow falling.

Another purpose of the present invention is the composition design that is via its structure, can utilize the excitatory effect of its parts running to be converted to supply of electrical energy car door display lighting equipment, make it under the unregulated power situation, still can send suitable light illumination, reducing the fear of indicator of trapped personnel, and be convenient to the follow-up railway carriage or compartment door open operation of arrival floor tram, compartment.

Take off purpose for before reaching, the present invention is on structure design, mainly be by a spare coil group and a standby power, cooperate slow jacking system, a control mechanism and a re-setting device, can be when elevator or elevator et out of order, be able to electronic or manual mode of operation, make its compartment according to re-setting device the progressive floor tram that drops to slowly, be beneficial to the internal staff and open the railway carriage or compartment door and get rid of poverty.

Particularly, a kind of elevator of the present invention or elevator disposal device, be in the lift control system of elevator or elevator cage, be provided with a permanent magnetism CD-ROM drive motor, the transmission spindle one end rank of this permanent magnetism CD-ROM drive motor is established a drive wheel, and Jie Yi braking device is controlled transmission spindle De Brake car and is stopped, and then controlled this drive wheel and stopped, on drive wheel, be arranged with hawser, hawser one end is fixedly arranged on the elevator cage, and it is held in addition and then holds in the mouth the establishing pouring weight, is just utilizing this permanent magnetism CD-ROM drive motor stopper controlling and driving wheel, reverse, realize the descending operation of its elevator cage, constitute its basic functional architecture according to this; It is characterized in that:

The permanent magnetism CD-ROM drive motor inside of this elevator or elevator is provided with basic coil assembly or sets up at least one group of spare coil group, this basis coil assembly or spare coil group are by standby power supply power supply, make this spare coil group be able to basic coil independence or operate together with the permanent magnetism CD-ROM drive motor, other is provided with a slow jacking system, the main brass that should delay jacking system is provided with several brakes, and control the main shaft turn of slow jacking system with the control mechanism of a side, make brake be able to Xie Chu braking device or triggering electromagnetic contactor, the elevator cage is slow to fall and stops thereby making, and this control mechanism is by electromagnetism running device or manually pulls the operation of control handle, and the re-setting device that cooperates each floor of lifting tunnel to preset relatively gets so that the beat control mechanism resets, and then reply brake Yu the relativeness of braking device and electromagnetic contactor, make the compartment be able to incremental model Huan Su Brake car to stopping, and its stop position just can be corresponding to the correct flat bed state of floor, is beneficial to the internal staff and opens the railway carriage or compartment door and separate embarrassed to get rid of poverty smoothly.

Description of drawings

Fig. 1 is the integral structure scheme drawing of preferred embodiment of the present invention;

Fig. 2 is in the structural relation scheme drawing of floor tram in the compartment for preferred embodiment of the present invention;

Fig. 3 is the slow structural relation scheme drawing that falls when operating for preferred embodiment of the present invention is in the compartment;

Fig. 4 for the brake of shock absorber of the present invention Yu the structure schematic diagram of braking device, electromagnetic contactor;

Fig. 5 is the pulley yoke of beat control mechanism of the present invention and the structure schematic diagram of manual handle;

Fig. 6 is the local structure schematic diagram of the manual handle of the present invention;

Fig. 7 operates the slow schematic flow sheet that falls in compartment for the present invention;

Fig. 8 is the integral structure scheme drawing of another preferred embodiment of the present invention;

Fig. 9 is the integral structure scheme drawing of another preferred embodiment of the present invention.

Drawing reference numeral explanation: 1 compartment; 2 permanent magnetism CD-ROM drive motor; 3 transmission spindle; 4 drive wheels; 5 braking devices; 6 hawsers; 7 basic coil assembly; 8 spare coil groups; 9 standby powers; 10 activator appliances; 20 slow jacking systems; 21 main shafts; 201 axle beds; 22,23,24 moving parts; 25 swing moving parts; 26,26 ' cotton rope; 27,28 electromagnetic contactors; 30 control mechanisms; 31 pulley yokes; 32 electromagnetism running device; 33 manual handles; 34 connecting rods; 35 ejector pins; 36 guide pin bushings; 37 pulleys; 40 re-setting devices; 41,42 plates; 43,44 oblique surfaces; 101 light equipments; 201 axle beds; 261 standby electromagnetism running devices; 331 draw-in grooves; 332 steel ball springs.

The specific embodiment

Reach the aspect relevant for structure composition of the present invention, technological means and effect, careful conjunction with figs. is given and further being specified for example in the back:

At first, see also the integral structure scheme drawing of Fig. 1, Fig. 2, the structural relation scheme drawing of Fig. 3 and the structure schematic diagram of Fig. 4～Fig. 6, as shown in the figure, the present invention is in the lifting control of elevator cage 1, mainly be to be provided with a permanent magnetism CD-ROM drive motor 2, transmission spindle 3 one ends of this permanent magnetism CD-ROM drive motor 2 are the drive wheel 4 that rank is established the basic device of elevator, and Ji Yi braking device 5 must be controlled transmission spindle 3 De Brake cars and stop, and then must control this drive wheel 4 and stop, on drive wheel 4, be arranged with hawser 6, hawser 6 one ends are fixedly arranged on elevator cage 1, it is held in addition and then holds in the mouth establishing pouring weight (not shown), just utilize this permanent magnetism CD-ROM drive motor 2 stopper controlling and driving wheel 4, reverse, reach the descending operation of its elevator cage 1, constitute its basic functional architecture according to this; And be that internal staff when reaching elevator cage 1 and stopping because of power failure or fault gets rid of poverty and separates embarrassed function, wherein:

These permanent magnetism CD-ROM drive motor 2 inside are except basic coil assembly 7, more set up at least one group of spare coil group 8 (can establish some groups), other is provided with a standby power 9 these spare coil group 8 required electric powers of supply, and its activation control is operated by an activator appliance 10 default in the elevator cage 1, when the basic coil assembly 7 of this permanent magnetism CD-ROM drive motor 2 operates, this spare coil group 8 can't operate thereupon, gene basis coil assembly 7 and the two group coils of spare coil group 8 for separating, after only when elevator has a power failure, activating standby power 9, just can change by spare coil group 8 and operate separately or operate simultaneously with 3 rotations of stopper transmission spindle with standby coil assembly 8 and basic coil assembly 7, in other words, should basis coil assembly 7 be independent or common start kenel promptly with spare coil group 8, both can use the elevator normal operation then only use basic coil assembly with the spare coil group is common when having a power failure during basis coil assembly trouble free, both can't interfere with each other;

In addition, in the machine hole of its installing permanent magnetism CD-ROM drive motor 2 parts such as grade, be provided with one group of slow jacking system 20, should mainly be provided with a main shaft 21 by slow jacking system 20, its two ends utilize axle bed 201 in addition the pivot group fix, on main shaft 21, be arranged with

several brakes

22,23,24, these

brakes

22,23,24 more must make different angles orientation cover group and operate with the turn of main shaft 21, end at main shaft 21 is installed with a swing moving part 25 in addition, these swing moving part 25 two ends are drawn respectively and are provided with cotton rope 26,26 ' and average out, a cotton rope 26 ' and be provided with standby electromagnetism running device 261 wherein, utilization be located at 30 pairs of one group of control mechanisms of elevator cage 1 in-to-in wherein a cotton rope 26 drawing and must force swing moving part 25 to drive main shafts 21 turns, make the brake 22 on the

main shaft

21,23,24 produce running, wherein a brake 22 will touch to Shi Fang braking device 5, make the transmission spindle 3 of permanent magnetism CD-ROM drive motor 2 be driven drive wheel 4 rotations, while

brake

23,24 will touch to its cooresponding

electromagnetic contactor

27,28 and cause its short circuit to activate, these electromagnetic contactors 27, be provided with the trimmable resistance (not shown) in 28, make it after activation, be prevented the high temperature that the motor coil running time is produced and break down, and can be used as electromagnetic contactor 27, for the rotating speed adjustment of transmission spindle 3, make the elevator cage be able to produce slow the rising or decline after 28 short circuits by the alternate position spike in clump weight and compartment;

This control mechanism 30, mainly be provided with a pulley yoke 31, and aforesaid cotton rope 26 passes by in the middle of it, this pulley yoke 31 is subjected to electromagnetism running device 32 pushing and pressing beats, also borrow a manual handle 33 to pull the control beat, when these pulley yoke 31 beats, to form the drawing effect to cotton rope 26, and then interlock swing moving part 25 and main shaft 21 generation swings, make its brake that gets borrower's axle 21 22,23,24 Shi Fang braking devices 5 and triggering

electromagnetic contactor

27,28 and the slow rising or the decline that reach elevator cage 1 control, be provided with a connecting rod 34 in the upper end of pulley yoke 31 rank in addition, this connecting rod 34 end is in addition tied with an ejector pin 35 ranks again, this ejector pin 35 is stretched on outside the elevator cage 1 after passing the default guide pin bushing 36 in elevator cage, be provided with a pulley 37 in ejector pin 35 other ends, this pulley 37 must be by pasting but is not contacted the wall in elevator tunnel, discharge drawing to cotton rope 26 so as to cooperating the default re-setting device 40 of each floor must force pulley yoke 31 to reset, swing moving part 25 and main shaft 21 are resetted, make its

brake

22,23,24 reset in the lump, cause electromagnetic contactor 27, the 28 Ji Shi braking device 5 Hui Fu Brake cars that open circuit, and then make elevator cage 1 be able to stop in the floor tram;

This re-setting device 40, be by

number laminate sheet

41,42 stack composition, and make

plate

41,42 two ends are

oblique surface

43,44, form the effect of holding of leading so as to pulley 37 to aforementioned ejector pin 35, and make it be able to segmentation to ejector pin 35 is pushed back, pulley yoke 31 is resetted piecemeal, its hop count is according to

plate

41,42 the number of plies that stacks determines, and cooperate its hop count and be provided with several sections draw-in grooves 331 in aforesaid manual handle 33, cooperate the setting of steel ball spring 332 and make manual handle 33 do to reply piecemeal, simultaneously should be slow the sheathed brake 23 of jacking system 20

main shafts

21,24 numbers also cooperate re-setting device 40 hop counts and are provided with, it is slowed down in the slow process of falling in elevator cage 1 piecemeal and even stop, avoiding taking place the anxious elevator cage 1 that caused rolling and internal staff's the discomfort partially of slowing down;

Please continue to cooperate and consult schematic flow sheet shown in Figure 7, the implementation and operation of elevator of the present invention or elevator disposal device is described, as shown in the figure, when Lift out of order, the internal staff can push activator appliance 10 conversion spare coil groups 8, activate standby power 9 simultaneously, if standby power 9 is in normal condition, promptly activate slow jacking system 20 by standby electromagnetism running device 32, and Xie Chu braking device 5, elevator cage 1 is moved voluntarily according to the relative weight potential difference in clump weight and compartment, reply shock absorber 20 through re-setting device 40, and with

electromagnetic contactor

23,24 short circuit is controlled and is arrived at a station slowly, and the personnel in the compartment 1 are got rid of poverty smoothly; If elevator or elevator et out of order, when standby power 339 also can't be powered simultaneously, then can pull the manual handle 33 of control and manually enable slow jacking system 20 and Xie Chu braking device 5, make compartment 1 be able to move voluntarily, reply slow jacking system 20 through re-setting device 40, and with the short circuit control of manually reinstating

electromagnetic contactor

23,24 and arrive at a station slowly, and then make that personnel are got rid of poverty in the compartment 1; By above explanation as can be known, elevator of the present invention or elevator disposal device are via the composition design of structure, when stopping in Lift out of order, no matter whether its standby power 9 can supply electric power, all can with electromagnetism operate device 32 or manually handle 33 control control mechanism 30 interlocks and control its slow jacking system 20 and activate, and Xie Chu braking device 5, make elevator cage 1 be able to slow decline, when it reduces to the tram of nearest floor, can utilize its re-setting device 40 to impel the slow jacking system 20 of control mechanism 30 interlocks to reset piecemeal or in order to electromagnetism running device 261 running swing moving parts 25 and reset by force, and cooperate its

electromagnetic contactor

27,28 sectional deceleration, make elevator cage 1 be able to incremental model Huan Su Brake car to stopping, and its stop position just can be corresponding to the floor correct status, open the railway carriage or compartment door to get rid of poverty smoothly in order to do being beneficial to the internal staff, remove the awkward situation of stranded elevator;

In addition, see also structural representation shown in Figure 8, be another preferred embodiment of the present invention, it is except aforesaid permanent magnetism CD-ROM drive motor 2, basis coil assembly 7, spare coil group 8, standby power 9, drive wheel 4 braking devices 5, slow jacking system 20, control mechanism 30, outside the compartment elevator or elevator disposal device that re-setting device etc. constitute, more 1 top is provided with the light equipment 101 that the compact LED lamp constitutes in the compartment, utilize

electromagnetic contactor

27,28 inner adjustable resistances transfer the voltage of bringing back to life to for its excitatory effect of deriving, make the light equipment 101 in the compartment 1 luminous via the voltage stabilizer (not shown) of circuit, so as to the light illumination of appropriateness is provided under the state of unregulated power, reducing the fear of indicator of trapped personnel, and be convenient to the follow-up railway carriage or compartment door open operation of arrival floor tram, compartment.

See also structural representation shown in Figure 9, be another preferred embodiment of the present invention, outstanding pointer carries out the configuration of structure of the present invention to the existing elevator of having installed and used, it is permanent magnetism the CD-ROM drive motor 2 direct and standby powers 9 of the originally existing technology of utilization,

electromagnetism control tentaculum

27,28 do online, when elevator takes place to have a power failure, the internal staff must push activator appliance 10, and use basic coil assembly 7 to activate standby power 9 simultaneously, if standby power 9 is in normal condition, promptly activate slow jacking system 20 by standby electromagnetism running device 32, and Xie Chu braking device 5, elevator cage 1 is moved voluntarily according to the relative weight potential difference in clump weight and compartment, reply shock absorber 20 through re-setting device 40, and with

electromagnetic contactor

23,24 short circuit is controlled and is arrived at a station slowly, personnel in the compartment 1 are got rid of poverty smoothly, and when standby power 9 can't the regular supply power supply, its manual mode is then also with aforementioned, so, the repacking of old elevator desire use structure of the present invention also can be gently also the dress group need not major change, can reach the benefit that is subjected to thereby breaks away from.

Via above explanation, elevator of the present invention as can be known or elevator disposal device, by a spare coil group and a standby power, cooperate slow jacking system, a control mechanism and a re-setting device, can be when elevator or elevator et out of order, to rise slowly or drop to the floor tram in electronic or its compartment of manual mode of operation, be beneficial to the internal staff and open the railway carriage or compartment door and get rid of poverty, in the time of solving existing elevator or elevator and face fault, its internal staff may stranded compartment and the awkward situation that can't get rid of poverty.

Claims

1. elevator or elevator disposal device, in the lift control system of elevator or elevator cage, mainly be to be provided with a permanent magnetism CD-ROM drive motor, the transmission spindle one end rank of this permanent magnetism CD-ROM drive motor is established a drive wheel, and the brake of borrowing brake control transmission spindle with stop, and then controlled this drive wheel and stopped, on drive wheel, be arranged with hawser, hawser one end is fixedly arranged on the elevator cage, it is held in addition and then holds in the mouth the establishing pouring weight, just utilize this permanent magnetism CD-ROM drive motor stopper controlling and driving wheel, reverse, reach the descending operation of its elevator cage, constitute its basic functional architecture according to this; It is characterized in that:

The permanent magnetism CD-ROM drive motor inside of this elevator or elevator is provided with basic coil assembly or sets up at least one group of spare coil group, this basis coil assembly or spare coil group are by standby power supply power supply, make this spare coil group be able to basic coil independence or operate together with the permanent magnetism CD-ROM drive motor, other is provided with a slow jacking system, the main brass that should delay jacking system is provided with several brakes, and control the main shaft turn of slow jacking system with the control mechanism of a side, make brake be removed brake or triggering electromagnetic contactor, the elevator cage is slow to fall and stops thereby making, and this control mechanism is by electromagnetism running device or manually pulls the operation of control handle, and the re-setting device that cooperates each floor of lifting tunnel to preset relatively gets so that the beat control mechanism resets, and then the relativeness of answer brake and brake and electromagnetic contactor, make the compartment be able to the slow brake of incremental model to stopping, and its stop position just can be corresponding to the correct flat bed state of floor, is beneficial to the internal staff and opens the railway carriage or compartment door and separate embarrassed to get rid of poverty smoothly.

2. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: this re-setting device is repeatedly formed the multistage kenel that resets for number laminate sheets, can impel the main shaft of control mechanism and slow jacking system thereof to carry out divided reset.

3. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: this slow jacking system mainly is provided with a main shaft, its two ends utilize axle bed in addition the pivot group fix, eccentric bushing is provided with several brakes on main shaft, end at main shaft is installed with a swing moving part in addition, these swing moving part two ends are drawn respectively and are provided with cotton rope and average out, one group of beat control mechanism of elevator cage in-to-in is located in utilization must force the swing moving part to drive the main shaft turn to a cotton rope drawing wherein, make the brake on the main shaft produce running to remove brake or to trigger electromagnetic contactor, slow the falling that reaches the elevator cage controlled.

4. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: this slow jacking system main shaft sheathed several brakes, it is the eccentric bushing group of making the different angles orientation, and must be with the turn of main shaft beat, led by re-setting device to hold with the beat control mechanism and when resetting piecemeal, its brake can trigger its electromagnetic contactor and realize slowing down piecemeal usefulness at main shaft according to this.

5. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: this control mechanism, mainly be provided with a pulley yoke, and slow jacking system cotton rope pass by in the middle of it, this pulley yoke is subjected to electromagnetism running device pushing and pressing beat, also borrow a manual handle to pull the control beat, when this pulley yoke beat, to form the drawing effect to cotton rope, cause swing moving part and main shaft to produce swing, be provided with a connecting rod in the upper end of pulley yoke rank in addition, this connecting rod end is in addition held in the mouth knot with an ejector pin again, and this ejector pin is stretched on outside the elevator cage after passing the default guide pin bushing in elevator cage, be provided with a pulley in other end of ejector pin, this pulley discharges the drawing to cotton rope by pasting but do not contact the wall in elevator tunnel so as to cooperating the default re-setting device of each floor to force pulley yoke to reset, swing moving part and main shaft are resetted.

6. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: the main shaft of this slow jacking system sheathed brake number, increase and decrease according to the hop count of re-setting device.

7. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: the spare coil group of this permanent magnetism CD-ROM drive motor can be provided with some groups.

8. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: the hop count of this re-setting device is to determine according to the stacking the number of plies of its plate, and its each laminate sheet two ends all form oblique surface.

9. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: the manual handle of this control mechanism, be provided with several sections draw-in grooves according to the hop count of re-setting device, cooperate the setting of steel ball spring and manual handle must be replied piecemeal.

10. according to described elevator of claim 1 or elevator disposal device, it is characterized in that: light equipment is established in this inside, elevator cage, and transfer the voltage of bringing back to life to for its excitatory effect of deriving by the inner adjustable resistance of electromagnetic contactor, make the light equipment in the compartment luminous via the voltage stabilizer of circuit, so as to the light illumination of appropriateness is provided under the state of unregulated power, reducing the fear of indicator of trapped personnel, and be convenient to the railway carriage or compartment door open operation behind the arrival floor tram, compartment.