CN202558439U

CN202558439U - Escalator running state detection device

Info

Publication number: CN202558439U
Application number: CN2012202123110U
Authority: CN
Inventors: 张大明; 李淼
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator Guangzhou Escalator Co Ltd
Priority date: 2012-05-11
Filing date: 2012-05-11
Publication date: 2012-11-28
Anticipated expiration: 2022-05-11

Abstract

The utility model discloses an escalator running state detection device, which monitors the running state of an escalator more reliably and directly by means of a stair detector, wherein the stair detector is mounted in an optional position around the stair, where stairs can be efficiently detected. The escalator running state detection device includes a first sensor, a second sensor and mounting brackets, wherein the first sensor and the second sensor can be arranged and placed on the mounting brackets in a forward lap manner. By detecting the stairs, the escalator running state detection device can detect the running direction and the running speed of the escalator, realizes real-time monitoring on moving components of the escalator, which are most direct and crucial to safety of passengers; and meanwhile, the overall monitoring by combining the running states of the stairs and important components such as a main engine, a driving wheel and hand straps are performed, so that the running state of the escalator can be monitored more reliably, and the life safety of the passengers is guaranteed.

Description

A kind of staircase running state detecting device

Technical field

The utility model relates to a kind of escalator, belongs to the elevator protection device technical field, particularly relates to the monitoring running state device on a kind of escalator or footway.

Background technology

Escalator (Escalator) is also claimed escalator, or automatically pedestrian's elevator, handrail elevator, Escalator, be a kind of with the conveyer belt mode transport see off people's transportation means.Mostly staircase detecting device of the prior art is to adopt non-contact type double-sensing element; Obtain the hand of rotation of escalator motor or main frame turning unit and two electric impulse signals that interlace of rotating speed; Supply the microprocessor computing in the staircase controller; Whether the judgement main frame exceeds the speed limit or reverses, and control signal is flowed to the power-supply controller of electric execution close down protection.

Yet existing escalator or footway are detected the service direction and the speed that are limited to main frame, reductor and handrail to the running state of staircase more and are detected, and the step that delivers the passenger are not carried out correlation detection.

Summary of the invention

The purpose of the utility model is to provide a kind of staircase running state detecting device, and it is more direct that it can be realized, more safe and reliable step running state detects.

The purpose of the utility model and to solve its technical matters be that technical scheme below adopting realizes.A kind of staircase running state detecting device according to the utility model proposes comprises detector and control system, and said detector comprises: first sensor, second sensor and mounting bracket; Said mounting bracket can be with the placement of being arranged to forward lap of this first sensor and second sensor.

Furthermore, before said first sensor is arranged on, after second sensor is arranged on; When step runs to the first sensor position; First sensor induced signal on, the second sensor sensing signal off is when step runs to the first sensor and the second sensor lap position; First sensor induced signal on, the second sensor sensing signal on; When step runs to second sensor station; The second sensor sensing signal on, first sensor induced signal off is set at first sensor induction earlier when staircase is up; Be set at the induction earlier of second sensor when staircase is descending; The real-time monitoring sensor signal of staircase controller through detecting the sequencing of the first sensor and the second sensor sensing signal, can learn whether the real-world operation direction of stair step is consistent with direction initialization.

Furthermore, said mounting bracket can be one or two; Said detector is installed in the position that step can effectively detect step all around, and detector is electrically connected with control system.

Furthermore; Said detector can detect step when step operation process sensor; And the induced signal that sensor produces is transferred to the staircase controller, controller can obtain the status informations such as running velocity, service direction of step according to the sensor sensing signal, combine the running state of vitals such as step and main frame, drive wheel, handrail to carry out integral monitoring simultaneously; And according to the operation of above-mentioned information Control staircase, device abnormity early warning or fault are stopped ladder.

Furthermore, said detector can be any one contactless coil pickup.

Furthermore, said detector can be a kind of contactless proximity transducer, perhaps detects the ultrasonic transduter of distance, or radar sensor, or infradred sensor, or electromagnetic sensor, or laser sensor.

By technique scheme, the advantage that the staircase running state fender guard of the utility model has is:

The detecting device of the utility model detects the running velocity that the induced signal that produces can be known step to step; (like the staircase hypervelocity, owe speed etc.) alarm takes place when unusual at the running velocity of step stop ladder; Monitor the running state of step in real time; Also can combine comparison, the synchronism of monitoring handrail, drive wheel and step, guarantee passenger's safety to handrail, driving wheel sensor pulse.

Description of drawings

Fig. 1 a is the scheme of installation of the staircase operation detecting device of the utility model; Fig. 1 b adopts detecting device to detect the mounting means figure of step pedal; Fig. 1 c adopts detecting device to detect the mounting means lateral plan of step pedal.

Fig. 2 a is that two sensors connect scheme drawing; Fig. 2 b is the annexation figure between sensor and step; Fig. 2 c is the annexation lateral plan between sensor and step; Fig. 2 d is that two sensors are connected two constructionals drawing on the independent rack; Fig. 2 e is the lateral plan of Fig. 2 d; Fig. 2 f is the section drawing of Fig. 2 d.

Fig. 3 is the sensor sensing signal timing diagram of the utility model.

Fig. 4 is the synchronism protection scheme drawing of the staircase of the utility model main operation parts in service.

The specific embodiment

See also shown in Figure 1, a kind of step detecting device of the utility model, its structure mainly comprises first sensor 10, second sensor 20, support 30, detecting device is transferred to staircase control system (not shown) with sensor signal.The step detecting device can be installed in step 40 around; Sensor can be sensed the optional position of step 40, and the sensor sensing level signal should be discontinuous during the staircase operation, can produce at least one induced signal when promptly sensor sensing is to step; When sensor sensing arrives next step; State variation should take place one time in sensor level signal at least, and sensor can detect step axle 41, step pedal 42; Step roller 43, former and later two steps such as hypotenuse of step 40 do not form continuous optional position.

When staircase normally moved, former and later two sensors of detecting device (first sensor 10 and second sensor 20) were taken up in order of priority and are sensed step 40, and output timing is two induced signals successively; The service direction that induced signal sequencing that arrives when two sensor and step are set is inconsistent; Perhaps each sensor sensing to the signal pulsewidth (being time gap) of former and later two steps; When perhaps the induced signal pulse number of each sensor is unusual in the certain hour; Staircase control is judged as the staircase fault, stops the operation of staircase in the time of warning, prevents dangerous generation.

The utility model detects to the service direction and the speed of the operation terminal-step of staircase 40; Realization is the most direct to passenger safety; The real-time monitoring of the staircase movable parts of most critical; And the running state in conjunction with main frame, drive wheel, handrail is carried out integral monitoring, and more the running state of failure-free monitoring staircase is protected passenger's life security.

Operation to step 40 is monitored in real time; (like the staircase hypervelocity, owe speed, drive in the wrong direction etc.) alarm takes place when unusual at the running velocity of step 40 or service direction stop ladder; The running state of monitor closely step; Also can combine comparison, the synchronism of monitoring handrail, drive wheel and step, guarantee passenger's safety to handrail, driving wheel sensor pulse.

Fig. 1 a, Fig. 1 b and Fig. 1 c are respectively and adopt detecting device to detect the different installation constructional drawing of step pedal.Detecting device is installed in the middle of the step 40 of upper and lower horizontal part, and detecting device detects step pedal 42, can prevent that step from moving out of peristome (moving out of the broach visible location) after detecting step deletion.According to different stair structures, also can be from the pedal edge of detection step directly over the step, perhaps the hypotenuse support of step etc. is detected in the side of step.

Shown in Fig. 2 a, 2b and 2c, the sensor of the utility model adopts the different scheme drawings that forward lap and install; Fig. 2 d, Fig. 2 e and Fig. 2 f are that two sensors are installed in the different scheme drawings on two independent racks respectively.The direction of step operation detecting device detects and defencive function can be explained as follows:

The placement that forward laps of two sensors is supposed first sensor 10 preceding, when step runs to first sensor 10 positions, and first sensor 10 induced signal on, second sensor, 20 induced signal off; When step runs to second sensor, 20 positions, second sensor, 20 induced signal on, first sensor 10 induced signal off; When step ran to two sensor position overlapped, first sensor 10 and second sensor, 20 induced signals were on (sensor mounting means and induced signal sequential chart are illustrated in fig. 3 shown below).

When staircase is up; Be set at first sensor 10 induction earlier, when staircase is descending, be set at second sensor 20 induction earlier; Positive rise and the falling edge moment of staircase controller through catching first sensor 10 inductions; The state that detects second sensor 20 is on or off, can learn the real-world operation direction of stair step 40, shown in following table 1 and table 2.

Table 1 elevator service direction detects to up

Direction	The MSDT1 positive rise	The MSDT1 falling edge
			Up	MSDT2：0	MSDT2：1

Table 2 elevator service direction detects to descending

Direction	The MSDT1 positive rise	The MSDT1 falling edge
			Descending	?MSDT2：1	?MSDT2：0

Shown in Figure 3 is the sensor sensing signal timing diagram.Failure-free method more; Be exactly with the positive rise of first sensor 10, the state of the falling edge moment second sensor 20; And second sensor, 20 positive rises, the falling edge order of the state of first sensor 10 constantly, judge the real-world operation direction, like following table 3 with shown in the table 4:

Table 3 elevator real-world operation direction is up

Direction	The MSDT1 positive rise	The MSDT2 positive rise	The MSDT1 falling edge	The MSDT2 falling edge
					Up	?MSDT2：0	?MSDT1：1	?MSDT2：1	?MSDT1：0

Table 4 elevator real-world operation direction is up

Direction	The MSDT2 positive rise	The MSDT1 positive rise	The MSDT2 falling edge	The MSDT1 falling edge
					Descending	?MSDT1：0	?MSDT2：1	?MSDT1：1	?MSDT2：0

In addition, the speed protection function that has of the step of the utility model operation detecting device can be explained as follows:

1) step speed protection

Obtain the step impulse singla through the step detecting device; Time between the pulse that system's each step of detection produces; Automatically out of service before the step pulse time is less than 1.2 times, before the step pulse time is less than 1.4 times, make the additional brake action, realize staircase overspeed protective;

2) obtain the step impulse singla through the step detecting device, the time between the pulse that system's each step of detection produces, the excessive staircase of realizing of step pulse time is owed the speed protection;

3) speed synchronization property protection

As shown in Figure 4; The running velocity of the main operation parts of staircase in service should be consistent; Through step induced signal and handrail signal, drive wheel signal, host signal etc. are compared; Can know that whether step is consistent with the speed synchronization property of handrail, drive wheel, main frame, can carry out emergency protection when velocity deviation is excessive;

4) sensor failure protection

Because the sensor sensing signal is discontinuous, sensor signal in service is ON for a long time, perhaps for a long time for OFF detects the sensor failure fault, avoids sensor failure to cause disabler.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; So every the utility model technical scheme content that do not break away from, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of the utility model technical scheme according to the technical spirit of the utility model.

Claims

1. a staircase running state detecting device comprises detector and control system, it is characterized in that: said detector comprises first sensor, second sensor and mounting bracket; Said mounting bracket can be with the placement of being arranged to forward lap of this first sensor and second sensor.

2. staircase running state detecting device according to claim 1 is characterized in that: said mounting bracket can be one or two; Said detector is installed in the position that step can effectively detect step all around, and detector is electrically connected with control system.

3. staircase running state detecting device according to claim 2; It is characterized in that: said detector can detect step when step operation process sensor; And the induced signal that sensor is produced is transferred to the staircase controller; Controller can obtain status informations such as the running velocity, service direction of step according to the sensor sensing signal; Combine the running state of vitals such as step and main frame, drive wheel, handrail to carry out integral monitoring simultaneously, and stop ladder according to the operation or the fault of above-mentioned information Control staircase.

4. staircase running state detecting device according to claim 3 is characterized in that: before first sensor is arranged on, after second sensor is arranged on; When step runs to the first sensor position, first sensor induced signal on, the second sensor sensing signal off; When step runs to the first sensor and the second sensor lap position, first sensor induced signal on, the second sensor sensing signal on; When step runs to second sensor station; The second sensor sensing signal on, first sensor induced signal off is set at first sensor induction earlier when staircase is up; Be set at the induction earlier of second sensor when staircase is descending; The real-time monitoring sensor signal of staircase controller through detecting the sequencing of the first sensor and the second sensor sensing signal, can learn whether the real-world operation direction of stair step is consistent with direction initialization.

5. staircase running state detecting device according to claim 1 is characterized in that: said detector can be any one contactless coil pickup.

6. staircase running state detecting device according to claim 5 is characterized in that: said detector can be a kind of contactless proximity transducer, perhaps detects the ultrasonic transduter of distance; Or radar sensor; Or infradred sensor, or electromagnetic sensor, or laser sensor.