CN101417767A

CN101417767A - Handrail tensioning device of escalator

Info

Publication number: CN101417767A
Application number: CNA2008102041621A
Authority: CN
Inventors: 陈金云; 李革; 张安; 张泉新
Original assignee: Suzhou Xinda Escalator Accessories Co Ltd
Current assignee: Suzhou Xinda Escalator Accessories Co Ltd
Priority date: 2008-12-08
Filing date: 2008-12-08
Publication date: 2009-04-29

Abstract

The invention relates to a handrail tensioning device of an escalator, which comprises a handrail speed measuring mechanism, a step speed measuring mechanism, a main controller, a driving mechanism and a locking mechanism, wherein the input end of the main controller is electrically connected with a speed sensor of the handrail speed measuring mechanism and a proximity sensor of the step speed measuring mechanism, a speed signal is fed back to the escalator main controller through the measurement of the speeds of a handrail belt and steps, the main controller compares two groups of speed signals to obtain the speed difference between the handrail belt and the steps, and outputs an adjustment quantity to the driving mechanism according to the speed difference so as to control the locking mechanism according to the adjustment quantity, thereby realizing the real-time adjustment of the speed of the handrail belt, ensuring the synchronism of the running speeds of the handrail belt and the steps, and simultaneously meeting the requirement that the speed difference between the handrail belt and the steps is less than 2% in GB 16899.

Description

The hand rail tension device of escalator

Technical field

The present invention relates to a kind of escalator, relate in particular to the device that automatic staircase handrail band and step speed are adjusted.

Background technology

At large-scale occasion such as subway, place escalators such as market have become the necessary walking-replacing tool of people, escalator generally includes step and is arranged on the handrail and the drive system of step both sides, in use, step relies on drive system to comprise that mainly motor and controller turn round, handrail is then mainly by rubbing with cycle operation, this often causes using after a period of time the kinematic velocity of step and handrail asynchronous, when taking advantage of escalator, especially child, the old man, they tend to hold handrail to keep the stable of self, but, when step and handrail speed asynchronous, then produce the lower part of the body forward and upper body is particularly held the arm of handrail and lagged behind, to be easy to produce and fall down phenomenon, thereby bring certain potential safety hazard for the use of escalator, in the prior art, when detecting step and handrail when asynchronous, often cut off the running of escalator, and by manually overhauling, this causes personnel crowded in the bigger occasion of flow of the people easily, causes very big inconvenience.

Summary of the invention

Thereby, technical matters to be solved by this invention make escalator use safer tightening device but providing a kind of auto-tensioning handrail.

The object of the present invention is achieved like this: a kind of hand rail tension device of escalator, it comprises

The handrail velocity measurement mechanisms, described handrail velocity measurement mechanisms comprises the speed sensor that is arranged on the escalator return terminal, described speed sensor is used to gather the handrail kinematic velocity;

The step velocity measurement mechanisms, described step velocity measurement mechanisms comprises the proximity transducer that is arranged between escalator step, described proximity transducer is used to gather step speed;

Master controller, the proximity transducer of the speed sensor of the input end of described master controller and handrail velocity measurement mechanisms and step velocity measurement mechanisms is electrically connected, and described master controller compares processing according to the electric signal of speed sensor and proximity transducer output;

Driver train, described driver train comprises stepping motor and the motor driver that is electrically connected with the stepping motor input end, described master controller mouth is connected with described motor driver input end, thereby master controller is exported the work of adjustment amount signal drive stepping motor according to the result who handles to motor driver;

Catch gear, described catch gear comprise and contacted worm and gear of the handrail of escalator and screw rod Transmission that described catch gear is locked the operating speed with the control handrail under described Stepping Motor Control.

Further, described catch gear is positioned at the upper end of escalator.

Described catch gear also comprises the tooth bar click-fit part that contacts with handrail.

Described driver train also comprises electric machine controller, and described electric machine controller is connected electrically between described master controller and the motor driver.

Described speed sensor is an incremental rotary encoder.

Because the utilization of technique scheme, the present invention has the following advantages: the present invention is by the mensuration to handrail and step speed, speed signal is fed back to the staircase master controller, master controller is compared two groups of speed signals, draw the velocity contrast of handrail and step, thereby and export adjustment amount according to this velocity contrast to driver train and control catch gear according to this adjustment amount, realization is to the real-time regulated of handrail speed, guarantee the synchronism of handrail and step operating speed, the while, regulation handrail and step velocity contrast should be less than 2% requirements among the GB16899 to satisfy.

Description of drawings

Accompanying drawing 1 is the structural principle block diagram of tightening device of the present invention;

Accompanying drawing 2 is tightening device of the present invention installation site scheme drawing;

Wherein: 1, handrail velocity measurement mechanisms; 2, step velocity measurement mechanisms; 3, master controller; 4, driver train; 41, stepping motor; 42, motor driver; 43, electric machine controller; 5, catch gear; 51, worm and gear and screw rod Transmission; 52, tooth bar click-fit part; 6, step; 7, handrail; 71, pinch roller;

The specific embodiment

Below in conjunction with accompanying drawing embodiments of the present invention are specifically described.

As shown in Figure 2, escalator generally includes step 6 and handrail 7 and drives the drive system (not shown) that step 6 turns round, handrail 7 is a ring-type, it is arranged on the both sides of step 6, when handrail 7 relies on the steps running to its friction force to move with step, because step 6 is not a driven in synchronism with handrail 7, therefore, both will produce certain velocity contrast in use for some time, according to standard GB 16899 regulation, the velocity contrast of handrail and step should be less than 2%, thereby tightening device of the present invention can be in real time carries out the purpose that the speed detection adjusts to step and handrail and is provided with for providing, as shown in Figure 1, this device comprises

Handrail velocity measurement mechanisms 1, return terminal at handrail 7 is provided with pinch roller 71, handrail 7 will produce power to this pinch roller through these pinch roller 71 places the time, by speed sensor is set the rotating speed of pinch roller 71 is gathered, this speed sensor can be incremental rotary encoder, thereby can record the running velocity of handrail according to the impulse singla of this coder output;

Step velocity measurement mechanisms 2, step velocity measurement mechanisms 2 comprises the proximity transducer that is arranged between two steps, when this proximity transducer of step process, will trigger this proximity transducer, thereby produces impulse singla output;

Master controller 3, master controller 3 is connected with the speed sensor of above-mentioned handrail velocity measurement mechanisms 1 and the proximity transducer of step velocity measurement mechanisms 2, master controller 3 is compared two groups of speed signals, draw the velocity contrast of handrail and step, and export corresponding adjustment amount according to default velocity contrast expected value;

Driver train 4, driver train 4 comprises the electric machine controller 43 that is connected with the mouth of master controller 3, the motor driver 42 that is connected with electric machine controller 43 mouths and the stepping motor 41 that is connected with motor driver 42 mouths in the present embodiment, electric machine controller 43 is according to the adjustment amount of master controller 3 outputs, convert thereof into the pulsed quantity that needs the control step motor speed, and by motor driver 42 to export stepping motor 41 to;

Catch gear 5, catch gear 5 comprises and contacted worm and gear of handrail and screw rod Transmission 51, the moving plate member of tensioning that stepping motor 41 control worm and gears are connected with the screw rod Transmission, utilize the degree of tension after the self-locking performance of turbine and worm keeps the handrail tensioning, thereby to regulate the running velocity of handrail, in order further to realize the safe operation of escalator, this catch gear 5 also comprises tooth bar and click-fit part 52, makes that by tooth bar and click-fit part handrail is further locked.

The control of the tightening device of escalator of the present invention and setting can realize by following manner:

The step actual speed is learnt to obtain when staircase turns round first automatically, velocity contrast according to 2% and handrail carry out velocity ratio and shine, adjustment amount is to carry out the single adjustment according to the setting value of electric machine controller, after adjusting back detection handrail rotation 5 circles, carrying out speed once more detects, require then adjust once more if still satisfy 2%, in like manner till satisfying.

For the requirement of assurance stepping motor 20% work system with according to handrail worn-down statistic, adjustment cycle can be set at 30 days, be to carry out a speed in per 30 days to detect and adjust, can satisfy the service life that operating needs can improve system again like this, adjust and to satisfy the up requirement of staircase simultaneously, make the thrust minimum of stepping motor like this.

The present invention simultaneously also has self-diagnostic function when control, send and do not reach expected value yet 10 times then stop ladder and show the handrail system fault by LED if promptly adjust instruction, and this breakdown signal can diagnose for the remote technology personnel by network delivery.

Above-mentioned aim of the present invention is illustrated, can realize the tensioning setting of handrail automatically by this tightening device, the accident of effectively avoiding causing personnel to damage because of handrail is lax takes place, reduce maintainer's working strength simultaneously, the operation that also guarantees escalator meets national regulation, but the present invention is not limited to the foregoing description and implementation method.The practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present invention.

Claims

1, a kind of hand rail tension device of escalator, it is characterized in that: it comprises

Handrail velocity measurement mechanisms (1), described handrail velocity measurement mechanisms (1) comprises the speed sensor that is arranged on the escalator return terminal, described speed sensor is used to gather the handrail kinematic velocity;

Step velocity measurement mechanisms (2), described step velocity measurement mechanisms (2) comprises the proximity transducer that is arranged between escalator step, described proximity transducer is used to gather step speed;

Master controller (3), the switch triggering part of the speed sensor of the input end of described master controller (3) and handrail velocity measurement mechanisms (1) and step velocity measurement mechanisms (2) is electrically connected, and described master controller (3) compares processing according to the electric signal of speed sensor and proximity transducer output;

Driver train (4), described driver train (4) comprises stepping motor (41) and the motor driver (42) that is electrically connected with stepping motor (41) input end, described master controller (3) mouth is connected with described motor driver (42) input end, master controller (3) according to the result who handles to motor driver (42) thus output adjustment amount signal drive stepping motor (41) work;

Catch gear (5), described catch gear (5) comprises and contacted worm and gear of the handrail of escalator and screw rod Transmission (51) that described catch gear (5) is locked the operating speed with the control handrail under the control of described stepping motor (41).

2, the hand rail tension device of escalator according to claim 1 is characterized in that: described catch gear (5) is positioned at the upper end of escalator.

3, the hand rail tension device of escalator according to claim 1 and 2 is characterized in that: described catch gear (5) also comprises the tooth bar click-fit part (52) that contacts with handrail.

4, the hand rail tension device of escalator according to claim 1, it is characterized in that: described driver train (4) also comprises electric machine controller (43), and described electric machine controller (43) is connected electrically between described master controller (3) and the motor driver (42).

5, the hand rail tension device of escalator according to claim 1 is characterized in that: described speed sensor is an incremental rotary encoder.