CN111853100B - Escalator brake system and control method - Google Patents
Escalator brake system and control method Download PDFInfo
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- CN111853100B CN111853100B CN202010756719.3A CN202010756719A CN111853100B CN 111853100 B CN111853100 B CN 111853100B CN 202010756719 A CN202010756719 A CN 202010756719A CN 111853100 B CN111853100 B CN 111853100B
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- escalator
- temperature
- alarm
- friction plate
- brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes with two brake-blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
Abstract
The application relates to an escalator brake system and a control method. The escalator braking system includes: a band-type brake; the temperature detection device is arranged between a friction plate and a brake drum of the band-type brake, is fixed on the brake shoe and is used for detecting the temperature of the friction plate; the running state detection device is used for detecting the running state of the escalator and outputting escalator state information; the control unit is connected with the temperature detection device and the running state detection device, is used for acquiring the temperature of the friction plate fed back by the temperature detection device and the escalator state information output by the running state detection device, and outputs a escalator stopping instruction to the escalator driving device when the temperature reaches a preset threshold value and the escalator is judged to be in a normal running state according to the escalator state information; the stop command is used for controlling the escalator driving device to stop working. The invention can avoid safety accidents or damage to the escalator driving device caused by the abnormity of the band-type brake.
Description
Technical Field
The application relates to the technical field of escalator safety, in particular to an escalator brake system and a control method.
Background
An Escalator (Escalator), also called an Escalator, or an Escalator, a hand-rail elevator, an Escalator, is a transportation tool for transporting/delivering pedestrians in a transportation belt manner. The escalator comprises an escalator used for carrying people to get on and off at different floor heights and a sidewalk escalator used for conveying passengers with the horizontal or inclined angle of not more than 12 degrees. As escalators are used more and more commonly, the safety problems of escalators are concerned more and more by the public, and the requirements of national standards on the safety performance of escalators are more and more strict.
The escalator is currently monitored by arranging an operating state monitoring device, and when the escalator is monitored to be abnormal, a control device of the escalator can control the escalator to stop operating so as to prevent safety accidents or damage to the escalator.
However, the conventional operation state detection device is used for monitoring the loss, the operation speed and the operation direction of the steps of the escalator, and feeds back the information to the control device when abnormality occurs, so that the state monitoring of a brake system is lacked, and once the abnormality caused by the fault of the brake occurs, the abnormality cannot be timely processed.
Disclosure of Invention
In view of the above, it is necessary to provide an escalator brake system and a control method thereof, which are safer and more reliable.
An escalator braking system comprising:
a band-type brake;
the temperature detection device is arranged between a friction plate on a brake shoe of the band-type brake and the brake drum, is fixed on the brake shoe and is used for detecting the temperature of the friction plate;
the running state detection device is used for detecting the running state of the escalator and outputting escalator state information;
the control unit is connected with the temperature detection device and the running state detection device and used for acquiring the temperature of the friction plate fed back by the temperature detection device and the escalator state information output by the running state detection device, and outputting a escalator stopping instruction to the escalator driving device when the temperature reaches a preset threshold value and the escalator is judged to be in a normal running state according to the escalator state information; the escalator stopping instruction is used for controlling the escalator driving device to stop working; the escalator driving device is used for driving an escalator to run.
In one embodiment, the temperature detecting device is installed at a position where the brake shoe is first contacted with the brake drum during braking.
In one embodiment, the brake shoe is provided with a blind hole, the brake shoe is connected with the brake arm of the band-type brake through a bolt, and the bolt is screwed and fixed with the blind hole.
In one embodiment, the method further comprises the following steps:
the alarm device is used for giving an alarm when receiving an alarm instruction; the alarm instruction is used for controlling the alarm device to give an alarm;
the control unit is also used for sending the alarm instruction to the alarm device while sending the elevator stopping instruction.
An escalator control method applied to an escalator brake system according to any one of the above embodiments, the method comprising:
acquiring the temperature of the friction plate;
when the temperature of the friction plate reaches a preset threshold value, acquiring the state information of a first escalator;
judging whether the escalator is in a normal running state or not according to the first escalator state information;
if yes, outputting a stop command to the escalator driving device; the escalator stopping instruction is used for controlling the escalator driving device to stop working; the escalator driving device is used for driving an escalator to run.
In one embodiment, the step of outputting the landing stopping command comprises:
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, acquiring second escalator state information when the temperature of the friction plate reaches the threshold value and the duration time reaches preset time;
judging whether the escalator is in a normal running state or not according to the state information of the second escalator;
and if so, outputting a stop command to the escalator driving device.
In one embodiment, the escalator brake system further comprises an alarm device for giving an alarm when receiving an alarm command; the method further comprises the following steps:
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, determining a fault reason according to the temperature change rate of the friction plate;
generating an alarm instruction according to the fault reason;
outputting the alarm instruction to an alarm device; the alarm instruction is used for controlling the alarm device to give an alarm.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates comprises:
calculating the temperature change rate of the friction plate;
and if the temperature change rate reaches a preset first rate interval, judging that the fault reason is overload of the escalator.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates further comprises:
if the temperature change rate reaches a preset second rate interval, judging that the fault reason is that a brake is dragged by a brake; and the lower limit value of the second speed interval is larger than the upper limit value of the first speed interval.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates further comprises:
if the temperature change rate reaches a preset third rate interval, judging that the fault reason is that the friction plate is seriously abraded; and the lower limit value of the third speed interval is larger than the upper limit value of the second speed interval.
According to the escalator brake system and the escalator brake control method, the temperature detection device is arranged on the brake shoe of the band-type brake, is positioned between the friction plate and the brake drum and is used for detecting the temperature of the friction plate and feeding the temperature back to the control unit, the control unit controls the escalator driving device by combining the temperature of the friction plate and the escalator state information fed back by the operation state detection device, when the temperature of the friction plate reaches a preset threshold value and judges that the escalator is in a normal operation state according to the escalator state information, the escalator driving device is controlled to stop working, so that the escalator driving device can stop working timely when the escalator driving device is in an abnormal condition which cannot be detected by the operation state detection device such as overload or drag brake, and the safety accident or damage to the escalator driving device caused by the abnormality of the band-type brake is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an escalator brake system in one embodiment;
FIG. 2 is a schematic structural diagram of a band-type brake in one embodiment;
FIG. 3 is a schematic diagram of a brake shoe and temperature sensing device according to one embodiment;
fig. 4 is a schematic structural view of an escalator brake system in another embodiment;
fig. 5 is a schematic flow diagram of an escalator control method in one embodiment;
fig. 6 is a schematic flow chart of the steps of outputting a stop command to an escalator drive device in one embodiment;
fig. 7 is a schematic flow chart of an escalator control method in another embodiment;
fig. 8 is a block diagram of the escalator control device in one embodiment.
Description of reference numerals:
100. a band-type brake; 101. brake drums 102, brake arms; 103. a brake shoe; 104. a friction plate; 105. a brake spring; 106. blind holes; 107. a bolt; 200. a temperature detection device; 300. an operation state detection device; 400. a control unit; 500. an escalator drive device; 600. an alarm device; 700. an escalator control device; 710. a temperature acquisition module; 720. a first escalator state information acquisition module; 730. a first operation state judgment module; 740. and the first instruction output module.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In one embodiment, as shown in fig. 1 and 2, there is provided an escalator brake system including:
a band-type brake 100;
the temperature detection device 200 is arranged between the friction plate 104 of the band-type brake 100 and the brake drum, is fixed on the brake shoe 103, and is used for detecting the temperature of the friction plate 104;
an operation state detection device 300 for detecting an operation state of the escalator and outputting escalator state information;
the control unit 400 is connected with the temperature detection device 200 and the operation state detection device 300, and is used for acquiring the temperature of the friction plate 104 fed back by the temperature detection device 200 and the escalator state information output by the operation state detection device 300, and outputting a escalator stopping instruction to the escalator driving device 500 when the temperature reaches a preset threshold value and the escalator is judged to be in a normal operation state according to the escalator state information; the stop command is used for controlling the escalator driving device 500 to stop working; the escalator drive device 500 is used to drive the escalator in operation.
The band-type brake 100 comprises a brake drum, brake arms, brake shoes 103, friction plates 104, brake springs 105 and push rods, when the escalator normally runs and braking is not needed, electromagnets in the band-type brake 100 are electrified and attracted, the two push rods respectively push the brake arms on the corresponding sides to be outwards opened, the brake springs 105 are compressed, the friction plates 104 on the brake shoes 103 are far away from the brake drum, and a high-speed shaft of a motor of the escalator driving device 500 drives the brake drum to rotate to enter normal operation; when the escalator stops running or needs to stop running, the working circuit of the escalator is powered off, the band-type brake 100 is powered off, the electromagnet is rapidly demagnetized to lose the suction force, at the moment, the brake spring 105 releases energy, the spring extends and resets, the two brake arms are inwards folded, the friction plates 104 on the brake shoes 103 are in contact with the brake drum, the brake friction force is generated, and the brake effect is achieved.
The operation state detection device 300 can detect the operation state of the escalator, including the operation direction, the operation speed, the step loss, and the like, and for example, the operation state detection device 300 disclosed in the publication No. CN202558439U can be used.
The temperature detecting device 200 can detect the temperature of the friction plate 104, if the brake arm of the band-type brake 100 is not fully opened, the motor high-speed shaft of the escalator driving device 500 drives the brake drum to rotate, i.e., drag occurs, due to the friction plate 104 being in contact with the brake drum at this time, the temperature sensing device 200 is able to sense an increase in the temperature of the friction plate 104 to a threshold value, since the operating condition detecting device 300 cannot detect the abnormality of the band-type brake 100, the control unit 400 cannot control the escalator driving device 500 to stop working, and at this time, it can be determined that the band-type brake 100 is abnormal according to the temperature of the friction plate 104 fed back by the temperature detecting device 200, if the control unit 400 determines that the escalator is in a normal operating condition according to the escalator condition information fed back by the operating condition detecting device 300, it is necessary to control the escalator to stop operating, that is, to control the escalator to stop operating by controlling the escalator driving device 500 to stop operating.
For the situation that the escalator driving device 500 is overloaded, since the brake drum is connected with the motor high-speed shaft of the escalator driving device 500, the temperature of the band-type brake 100 is increased under the influence of the motor, the temperature detection device 200 feeds the detected temperature back to the control unit 400, and can judge that the band-type brake 100 is abnormal, if the control unit 400 judges that the escalator is in a normal running state according to the escalator state information fed back by the running state detection device 300, the escalator needs to be controlled to stop running, that is, the escalator is controlled to stop running by controlling the escalator driving device 500 to stop running.
According to the escalator brake system, the temperature detection device 200 is arranged on the brake shoe 103 of the band-type brake 100, the temperature detection device 200 is located between the friction plate 104 and the brake drum and used for detecting the temperature of the friction plate 104 and feeding back the temperature to the control unit 400, the control unit 400 controls the escalator driving device 500 by combining the temperature of the friction plate 104 and escalator state information fed back by the operation state detection device 300, when the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal operation state according to the escalator state information, the escalator driving device 500 is controlled to stop working, so that the escalator driving device 500 can stop working timely when the escalator driving device 500 is in an abnormal condition which cannot be detected by the operation state detection device 300 such as overload or drag brake, and safety accidents or damage to the escalator driving device 500 are avoided.
In one embodiment, the temperature sensing device 200 is mounted at a position where the brake shoe 103 is first contacted with the brake drum during braking.
In order to ensure the reliability of the temperature detection of the friction plate 104 by the temperature detection device 200, the temperature detection device 200 is arranged at the position where the brake shoe 103 is firstly contacted with the brake drum in the braking process, so that the temperature of the friction plate 104, which is increased due to friction with the brake drum, can be accurately detected even if the contact area of the friction plate 104 on the brake shoe 103 with the brake drum is small.
In one embodiment, as shown in fig. 3, a blind hole 106 is formed in the brake shoe 103, the brake shoe 103 is connected with the brake arm of the band-type brake 100 through a bolt 107, and the bolt 107 is screwed and fixed with the blind hole 106.
The blind holes 106 are matched with the bolts 107 for installation, so that the band-type brake 100 is high in safety level, good in protection performance and detachable, and can be conveniently replaced if the brake shoes 103 or the brake arms are in failure, and maintenance and overhaul are facilitated.
In one embodiment, as shown in fig. 4, the escalator brake system further includes:
an alarm device 600 for giving an alarm when receiving an alarm instruction; the alarm instruction is used for controlling the alarm device 600 to give an alarm;
the control unit 400 is further configured to send an alarm command to the alarm device at the same time as the elevator stopping command.
If only controlling the escalator driving device 500 to stop working, the failure reason can not be thoroughly solved, the control unit 400 sends the escalator stopping instruction to the escalator driving device 500, and simultaneously, the escalator stopping instruction is also sent to the alarm device 600, the alarm device 600 is controlled to give an alarm, and the staff can be timely reminded of needing to carry out fault maintenance.
In one embodiment, as shown in fig. 5, there is provided an escalator control method applied to an escalator brake system according to any one of the above embodiments, taking a control unit 400 applied to the escalator brake system as an example, the method including:
in step S100, the temperature of the friction plate 104 is acquired.
The temperature of the friction plate 104 is detected by the temperature detecting device 200 and then fed back to the control unit 400.
Step S200, when the temperature of the friction plate 104 reaches a preset threshold value, acquiring the state information of the first escalator.
The first escalator state information is escalator state information detected by the operation state detection device 300 when the temperature of the friction plate 104 fed back by the temperature detection device 200 reaches a preset threshold value.
And S300, judging whether the escalator is in a normal running state or not according to the state information of the first escalator.
Judging whether the escalator is in a normal operation state or a stop state according to the first escalator state information fed back by the operation state detection device 300, specifically, in one embodiment, the operation state detection device 300 can judge the operation state of the escalator by detecting the operation speed of the escalator; in another embodiment, the operation state detecting device 300 can also determine the operation state of the escalator by detecting whether the step position changes. The control unit 400 can determine the current operating state of the escalator from the first escalator state information.
Step S400, if yes, outputting a stop instruction to the escalator driving device 500; the stop command is used for controlling the escalator driving device 500 to stop working; the escalator drive device 500 is used to drive the escalator in operation.
The temperature detecting device 200 can detect the temperature of the friction plate 104, if the brake arm of the band-type brake 100 is not fully opened, the motor high-speed shaft of the escalator driving device 500 drives the brake drum to rotate, i.e., drag occurs, due to the friction plate 104 being in contact with the brake drum at this time, the temperature sensing device 200 is able to sense an increase in the temperature of the friction plate 104 to a threshold value, since the operating state detection device 300 cannot detect the abnormality of the band-type brake 100, the control unit 400 cannot control the escalator driving device 500 to stop working, and at this time, it can be determined that the band-type brake 100 is abnormal according to the temperature of the friction plate 104 fed back by the temperature detection device 200, if the control unit 400 determines that the escalator is in a normal operating state according to the escalator state information fed back by the operating state detection device 300, the escalator needs to be controlled to stop operating, namely, the escalator drive device 500 is controlled to stop working by outputting the escalator stop command, and the escalator is controlled to stop running.
For the situation that the escalator driving device 500 is overloaded, because the brake drum is connected with the high-speed shaft of the motor of the escalator driving device 500, the temperature of the band-type brake 100 is increased under the influence of the motor, the temperature detection device 200 feeds the detected temperature back to the control unit 400, and can judge that the band-type brake 100 is abnormal, if the control unit 400 judges that the escalator is in a normal running state according to the escalator state information fed back by the running state detection device 300, the escalator needs to be controlled to stop running, that is, the escalator driving device 500 is controlled to stop running by outputting a stopping instruction, and then the escalator is controlled to stop running.
In one embodiment, as shown in fig. 6, the step of outputting the landing command includes:
step S410, if the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, acquiring second escalator state information when the temperature of the friction plate 104 reaches the threshold value and the duration time reaches preset time.
The temperature of the friction plate 104 may reach a threshold value during normal braking, and when the escalator is stopped, or when the escalator stops running after the threshold value is reached for a while, the escalator drive device 500 does not need to send the escalator stop command again to control the escalator drive device to stop working. By timing the duration of time that the temperature of the brake friction plate 104 reaches the threshold value, if the duration reaches the preset time and the escalator stops running, the subsequent steps do not need to be executed, and if the escalator is still in a normal running state, the escalator driving device 500 is controlled to stop working by the control unit 400 sending an escalator stopping command. When the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, the duration time that the temperature of the brake friction plate 104 reaches the threshold value is detected, and if the duration time reaches the preset time, the second escalator state information is obtained and is used for judging the running state of the escalator at the moment.
It should be noted that the "first escalator state information" and the "second escalator state information" are escalator state information that the escalator state detection device obtains at different time points, and the "first" and the "second" are only used for distinguishing the escalator state information corresponding to different time points.
And step S420, judging whether the escalator is in a normal running state or not according to the state information of the second escalator.
The control unit 400 judges whether the escalator stops running or not according to the state information of the second escalator, and if the escalator stops running, the escalator stop instruction does not need to be output; if the escalator is still in a normal operation state, the escalator drive device 500 needs to be controlled to stop working.
And step S430, if yes, outputting a stop command to the escalator driving device 500.
If the escalator is still in the normal operation state according to the second escalator state information, outputting a stopping instruction to the escalator driving device 500, controlling the escalator driving device 500 to stop working, and further controlling the escalator to stop operating.
In one embodiment, the escalator braking system further comprises an alarm device 600 for giving an alarm when the elevator stopping command is received; as shown in fig. 7, the method further comprises:
step S500, if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the state information of the first escalator, determining a fault reason according to the temperature change rate of the friction plate;
step S600, generating an alarm instruction according to the fault reason;
step S700, outputting an alarm instruction to the alarm device 600; the alarm command is used to control the alarm device 600 to send out an alarm.
If only controlling the escalator driving device 500 to stop working, the failure cause cannot be thoroughly solved, the control unit 400 sends the escalator stopping instruction to the escalator driving device 500 and simultaneously sends the alarm instruction to the alarm device 600 to control the alarm device 600 to give an alarm, so that the staff can be timely reminded of needing to carry out troubleshooting. The inventor finds that the temperature change rates of the friction plates are different under different faults, so that the fault reason can be determined according to the temperature change rates of the friction plates, and a corresponding alarm instruction is generated according to the determined fault reason, so that a worker can know the fault reason, and the maintenance is facilitated.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates comprises:
step S501, calculating the temperature change rate of the friction plate;
and step S502, if the temperature change rate reaches a preset first rate interval, judging that the fault reason is overload of the escalator.
And if the temperature change rate is in the first speed interval, the fault reason can be determined to be the overload of the escalator corresponding to the first speed interval.
In one embodiment, in the running process of the escalator, the current load rate can be determined according to the temperature change rate of the friction plates, the control unit stores data intervals corresponding to different load rates, and the load rate can be directly determined according to the temperature change rate of the friction plates. In one embodiment, if the load rate exceeds a preset load rate threshold, the control unit generates a prompt and prompts a worker through the alarm device, so that the load rate of the escalator can be monitored.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates further comprises:
step S503, if the temperature change rate reaches a preset second rate interval, determining that the fault reason is that the brake is dragged by the internal contracting brake; and the lower limit value of the second rate section is greater than the upper limit value of the first rate section.
When dragging occurs, the friction plate and the brake drum are not completely separated, but the brake drum still rotates at the moment, the temperature is rapidly increased under the friction of the friction plate, and the temperature change rate is faster than the temperature change rate of overload, so that if the temperature change rate reaches a second rate interval, the fault reason can be judged to be dragging.
In one embodiment, the step of determining the cause of the fault based on the rate of temperature change of the friction plates further comprises:
if the temperature change rate reaches a preset third rate interval, judging that the failure reason is that the friction plate is seriously abraded; and the lower limit value of the third speed interval is greater than the upper limit value of the second speed interval.
The friction plate is fixed on the surface of the brake shoe and used for braking through friction with the brake drum, abrasion can be generated in the using process, when the friction plate is seriously abraded, if the friction plate is braked, the brake shoe can be abraded with the brake drum, the brake shoe and the brake drum are made of metal materials, heat generated by friction of the brake shoe and the brake drum is high, the temperature change rate is very high, and if the temperature change rate reaches a third rate interval, the fault reason that the friction plate is seriously abraded can be determined, and the friction plate needs to be replaced by a new friction plate.
It should be understood that although the various steps in the flowcharts of fig. 5-7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 5-7 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 8, there is provided an escalator control device 700 comprising: temperature acquisition module 710, first staircase state information acquisition module 720, first running state judgment module 730 and the instruction output module that stops the ladder, wherein:
a temperature acquisition module 710 for acquiring a temperature of the friction plate 104;
the first escalator state information acquiring module 720 is configured to acquire first escalator state information when the temperature of the friction plate 104 reaches a preset threshold;
the first operation state judgment module 730 is used for judging whether the escalator is in a normal operation state according to the first escalator state information;
the first instruction output module 740 is configured to output a stop instruction to the escalator driving device 500 when the temperature of the friction plate 104 reaches a preset threshold value and the escalator is determined to be in a normal operation state according to the first escalator state information; the stop command is used for controlling the escalator driving device 500 to stop working; the escalator drive device 500 is used to drive the escalator in operation.
In one embodiment, the first instruction output module 740 includes:
the second escalator state information acquiring unit is used for acquiring second escalator state information when the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, and the temperature of the friction plate 104 reaches the threshold value and the duration time reaches preset time;
the second running state judging unit judges whether the escalator is in a normal running state or not according to the second escalator state information;
and if so, outputting a stopping command to the escalator driving device 500.
In one embodiment, the escalator brake system further comprises an alarm device 600 for giving an alarm when receiving an alarm command; the escalator control device 700 further includes:
the fault cause determining module is used for determining a fault cause according to the temperature change rate of the friction plate when the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information;
the alarm instruction generating module is used for generating an alarm instruction according to the fault reason;
and the alarm instruction output module is used for outputting an alarm instruction to the alarm device.
For the specific limitations of the escalator control device 700, reference can be made to the above limitations of the escalator control method, which are not described in detail here. The various modules in the escalator control device 700 described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.
In one embodiment, there is provided an escalator brake system comprising:
a band-type brake 100;
the temperature detection device 200 is arranged between the friction plate 104 of the band-type brake 100 and the brake drum, is fixed on the brake shoe 103, and is used for detecting the temperature of the friction plate 104;
an operation state detection device 300 for detecting an operation state of the escalator and outputting escalator state information;
a controller comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring the temperature of the friction plate 104;
when the temperature of the friction plate 104 reaches a preset threshold value, acquiring first escalator state information;
judging whether the escalator is in a normal running state or not according to the first escalator state information;
if yes, outputting a stop command to the escalator driving device 500; the stop command is used for controlling the escalator driving device 500 to stop working; the escalator drive device 500 is used for driving the escalator to run.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, acquiring second escalator state information when the temperature of the friction plate 104 reaches the threshold value and the duration time reaches preset time;
judging whether the escalator is in a normal running state or not according to the state information of the second escalator;
if yes, outputting a stop command to the escalator driving device 500.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, determining a fault reason according to the temperature change rate of the friction plate;
generating an alarm instruction according to the fault reason;
outputting an alarm instruction to the alarm device 600; the alarm command is used to control the alarm device 600 to send out an alarm.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
calculating the temperature change rate of the friction plate;
and if the temperature change rate reaches a preset first rate interval, judging that the fault reason is overload of the escalator.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the temperature change rate reaches a preset second rate interval, judging that the fault reason is that the brake is dragged by the band-type brake; and the lower limit value of the second rate section is greater than the upper limit value of the first rate section.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which when executed by a processor performs the steps of:
acquiring the temperature of the friction plate 104;
when the temperature of the friction plate 104 reaches a preset threshold value, acquiring first escalator state information;
judging whether the escalator is in a normal running state or not according to the first escalator state information;
if yes, outputting a stop command to the escalator driving device 500; the stop command is used for controlling the escalator driving device 500 to stop working; the escalator drive device 500 is used for driving the escalator to run.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the temperature of the friction plate 104 reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, acquiring second escalator state information when the temperature of the friction plate 104 reaches the threshold value and the duration time reaches preset time;
judging whether the escalator is in a normal running state or not according to the state information of the second escalator;
if yes, outputting a stop command to the escalator driving device 500.
In one embodiment, the computer program when executed by the processor further performs the steps of:
outputting the elevator stopping instruction to an alarm device 600; the elevator stopping instruction is also used for controlling the alarm device 600 to give an alarm.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, determining a fault reason according to the temperature change rate of the friction plate;
generating an alarm instruction according to the fault reason;
outputting an alarm instruction to the alarm device 600; the alarm command is used to control the alarm device 600 to send out an alarm.
In one embodiment, the computer program when executed by the processor further performs the steps of:
calculating the temperature change rate of the friction plate;
and if the temperature change rate reaches a preset first rate interval, judging that the fault reason is overload of the escalator.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the temperature change rate reaches a preset second rate interval, judging that the fault reason is that the brake is dragged by the band-type brake; and the lower limit value of the second rate section is greater than the upper limit value of the first rate section.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An escalator braking system, comprising:
a band-type brake;
the temperature detection device is arranged between a friction plate on a brake shoe of the band-type brake and the brake drum, is fixed on the brake shoe and is used for detecting the temperature of the friction plate;
the running state detection device is used for detecting the running state of the escalator and outputting escalator state information;
the control unit is connected with the temperature detection device and the running state detection device and used for acquiring the temperature of the friction plate fed back by the temperature detection device and the escalator state information output by the running state detection device, and outputting a escalator stopping instruction to the escalator driving device when the temperature reaches a preset threshold value and the escalator is judged to be in a normal running state according to the escalator state information; the escalator stopping instruction is used for controlling the escalator driving device to stop working; the escalator driving device is used for driving the escalator to run;
the control unit is also used for determining a fault reason according to the temperature change rate of the friction plate if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information;
generating an alarm instruction according to the fault reason;
outputting the alarm instruction to an alarm device; the alarm instruction is used for controlling the alarm device to give an alarm.
2. The escalator brake system according to claim 1, wherein said temperature sensing device is mounted at a position where said brake shoe first contacts said brake drum during braking.
3. The escalator braking system according to claim 1 or 2, wherein the brake shoe is provided with a blind hole, the brake shoe is connected with the brake arm of the band-type brake through a bolt, and the bolt is screwed and fixed with the blind hole.
4. The escalator brake system of claim 1, further comprising:
the alarm device is used for giving an alarm when receiving an alarm instruction; the alarm instruction is used for controlling the alarm device to give an alarm;
the control unit is also used for sending the alarm instruction to the alarm device while sending the elevator stopping instruction.
5. An escalator control method, characterized by being applied to the escalator brake system according to any one of claims 1 to 4, further comprising an alarm device for giving an alarm upon receiving an alarm command; the method comprises the following steps:
acquiring the temperature of the friction plate;
when the temperature of the friction plate reaches a preset threshold value, acquiring the state information of a first escalator;
judging whether the escalator is in a normal running state or not according to the first escalator state information;
if yes, outputting a stop command to the escalator driving device; the escalator stopping instruction is used for controlling the escalator driving device to stop working; the escalator driving device is used for driving the escalator to run;
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, determining a fault reason according to the temperature change rate of the friction plate;
generating an alarm instruction according to the fault reason;
outputting the alarm instruction to an alarm device; the alarm instruction is used for controlling the alarm device to give an alarm.
6. The escalator control method according to claim 5, wherein said step of outputting a stop command includes:
if the temperature of the friction plate reaches a preset threshold value and the escalator is judged to be in a normal running state according to the first escalator state information, acquiring second escalator state information when the temperature of the friction plate reaches the threshold value and the duration time reaches preset time;
judging whether the escalator is in a normal running state or not according to the state information of the second escalator;
and if so, outputting a stop command to the escalator driving device.
7. The escalator control method according to claim 5, wherein said step of determining the cause of the fault based on the rate of temperature change of the friction plates comprises:
calculating the temperature change rate of the friction plate;
and if the temperature change rate reaches a preset first rate interval, judging that the fault reason is overload of the escalator.
8. The escalator control method according to claim 7, wherein said step of determining the cause of the fault based on the rate of temperature change of the friction plates further comprises:
if the temperature change rate reaches a preset second rate interval, judging that the fault reason is that a brake is dragged by a brake; and the lower limit value of the second speed interval is larger than the upper limit value of the first speed interval.
9. The escalator control method according to claim 8, wherein said step of determining a cause of failure based on the rate of temperature change of the friction plates further comprises:
if the temperature change rate reaches a preset third rate interval, judging that the fault reason is that the friction plate is seriously abraded; and the lower limit value of the third speed interval is larger than the upper limit value of the second speed interval.
10. The escalator control method according to claim 7, further comprising the steps of:
determining the current load rate of the escalator according to the temperature change rate;
and if the load rate exceeds a preset load rate threshold value, sending prompt information to the alarm device.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52121250A (en) * | 1976-04-05 | 1977-10-12 | Toshiba Corp | Apparatus for protecting elevator from overload |
| US5419415A (en) * | 1992-12-21 | 1995-05-30 | Inventio Ag | Apparatus for monitoring elevator brakes |
| US6360850B1 (en) * | 2000-07-20 | 2002-03-26 | Dana Corporation | Progressive brake lining wear sensor |
| CN101264840A (en) * | 2007-03-14 | 2008-09-17 | 株式会社日立制作所 | Elevator device |
| CN102344066A (en) * | 2010-07-22 | 2012-02-08 | 东芝电梯株式会社 | Elevator brake anomaly detection system and method thereof |
| CN202558439U (en) * | 2012-05-11 | 2012-11-28 | 日立电梯（中国）有限公司 | Escalator running state detection device |
| JP2017013970A (en) * | 2015-07-01 | 2017-01-19 | 株式会社日立ビルシステム | Inspection auxiliary device of abnormality detection device of brake equipment and inspection auxiliary method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3454925A (en) * | 1966-04-07 | 1969-07-08 | Goodyear Tire & Rubber | Brake temperature indicating system |
| US5136508A (en) * | 1990-06-19 | 1992-08-04 | Allied-Signal Inc. | Brake lining temperature prediction for a traction control system |
| TWI251578B (en) * | 2001-12-11 | 2006-03-21 | Hitachi Building Sys Co Ltd | Magnetic brake system and elevator trouble detection system |
| US7877216B2 (en) * | 2008-07-30 | 2011-01-25 | Honeywell International Inc. | Method, system, and apparatus for friction pad wear and brake condition monitoring |
| JP5842877B2 (en) * | 2013-07-23 | 2016-01-13 | 株式会社アドヴィックス | Brake temperature detection device and electric parking brake control device |
| US9267561B2 (en) * | 2013-10-22 | 2016-02-23 | Bell Helicopter Textron Inc. | Rotor brake control system |
| CN207536983U (en) * | 2017-11-23 | 2018-06-26 | 中景恒基云端物联网科技成都有限公司 | A kind of staircase work state-detection and tele-control system |
| CN111285237B (en) * | 2020-02-27 | 2022-03-08 | 日立电梯（广州）自动扶梯有限公司 | Overheat protection device, braking system and escalator |
-
2020
- 2020-07-31 CN CN202010756719.3A patent/CN111853100B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52121250A (en) * | 1976-04-05 | 1977-10-12 | Toshiba Corp | Apparatus for protecting elevator from overload |
| US5419415A (en) * | 1992-12-21 | 1995-05-30 | Inventio Ag | Apparatus for monitoring elevator brakes |
| US6360850B1 (en) * | 2000-07-20 | 2002-03-26 | Dana Corporation | Progressive brake lining wear sensor |
| CN101264840A (en) * | 2007-03-14 | 2008-09-17 | 株式会社日立制作所 | Elevator device |
| CN102344066A (en) * | 2010-07-22 | 2012-02-08 | 东芝电梯株式会社 | Elevator brake anomaly detection system and method thereof |
| CN202558439U (en) * | 2012-05-11 | 2012-11-28 | 日立电梯（中国）有限公司 | Escalator running state detection device |
| JP2017013970A (en) * | 2015-07-01 | 2017-01-19 | 株式会社日立ビルシステム | Inspection auxiliary device of abnormality detection device of brake equipment and inspection auxiliary method |
Non-Patent Citations (1)
| Title |
|---|
| 基于实时温控系统的鼓式制动器设计;李穗平;《包装工程》;20120620;全文 * |
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