CN112456293A - Monitoring system and method capable of marking embedded steel wires in escalator handrail in real time - Google Patents
Monitoring system and method capable of marking embedded steel wires in escalator handrail in real time Download PDFInfo
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- CN112456293A CN112456293A CN202011464902.2A CN202011464902A CN112456293A CN 112456293 A CN112456293 A CN 112456293A CN 202011464902 A CN202011464902 A CN 202011464902A CN 112456293 A CN112456293 A CN 112456293A
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- electromagnetic
- steel wire
- embedded steel
- hand strap
- handrail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B27/00—Indicating operating conditions of escalators or moving walkways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/22—Balustrades
- B66B23/24—Handrails
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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
Abstract
The invention discloses a state monitoring system for an embedded steel wire in an escalator handrail, which comprises a clamping type electromagnetic monitoring device, a motion positioning device and a data acquisition and processing module, wherein the clamping type electromagnetic monitoring device comprises a clamping support and three electromagnetic modules, each electromagnetic module comprises an E-shaped magnetic core, an exciting coil and two induction coils, and magnetic lines of force emitted by the exciting coils pass through the handrail and then pass through the induction coils on two sides to form a closed loop, so that a detection area is formed to detect magnetic flux; the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the embedded steel wires according to the magnetic flux conditions measured by the electromagnetic modules; the motion positioning device comprises a support rod, a roller and an encoder. The invention detects the magnetic flux change of the embedded steel wire through three groups of electromagnetic modules, judges and positions the defects, provides reliable data support for the timely maintenance of the escalator and ensures the operation safety of the escalator.
Description
Technical Field
The invention belongs to the technical field of escalator monitoring, and particularly relates to a system and a method for monitoring an embedded steel wire in an escalator handrail.
Background
The escalator is used as special equipment, is an important task for transporting passengers in railway and urban rail transit, and is of great importance in safety. In order to ensure the safety of passengers and reduce the occurrence probability of accidents, the escalator needs to be regularly detected and maintained, so that the equipment is ensured to be in a good running state. However, the conventional escalator is mainly repaired manually and periodically and repaired with faults, namely, workers perform periodic inspection when no fault occurs and then repair when a fault occurs, and the mode belongs to a post-accident behavior, cannot effectively prevent the occurrence of the fault and is not beneficial to avoiding major accidents; meanwhile, the periodic maintenance may cause excessive maintenance or untimely maintenance, which results in large time, manpower and material resources consumption, poor effect, and high operation difficulty and cost.
The escalator handrail belt moves synchronously with the steps, and passengers can grab the part for increasing standing stability, so that the escalator handrail belt is a key component of the escalator and is of great importance to the running safety of the escalator. For the resistant tensile strength who increases automatic escalator handrail area, its inside embedding has the steel wire, and difficult through the manual inspection when its inside steel wire takes place the defect comes out, consequently can leave over the hidden danger, influences automatic escalator operating condition, threatens passenger's life and property safety. The magnetic field detection is used as a nondestructive detection method and can be applied to the state monitoring of the steel wire embedded in the handrail belt of the escalator. At present, in the patent disclosed about the magnetic field monitoring technology, for example, CN201910811217.3 discloses an electromagnetic sensor and a monitoring method for monitoring the state of a dragging steel belt of an escalator, but the patent discloses a method for detecting the state of an embedded steel belt by an electromagnetic sensor, but the patent discloses an open-loop magnetic flux sensor, the detection precision is low, only one side of the embedded steel belt can be detected, the detection range does not realize the radial full coverage of the embedded steel belt, the radial detection area positioning of the defects of the embedded steel belt cannot be carried out, the patent sensor only has one group of electromagnet modules, the modules cannot normally work once the modules break down, and the reliability of the sensor is low. Patent CN201910170006.6 a clamping type magnetic flux sensor and its application method, discloses a tensile force of the exposed steel cable in the existing structure is detected through the clamping type magnetic flux sensor, this patent can only detect the internal tensile force of a steel cable, and can't locate the position of the detection point, this patent sensor only has a set of electromagnet module, the module once breaks down and then can't work normally, the reliability of the sensor is lower.
In summary, the monitoring of the existing escalator has the following disadvantages: (1) only one object is monitored by one electromagnetic sensor, and the detection capacity and range are small; (2) the open-loop sensor has low measurement precision, and the closed-loop sensor cannot be disassembled for maintenance and is inconvenient; (3) the E-type electromagnetic sensor structure can only detect one side of the embedded steel wire and cannot realize the full coverage of the detected object; (4) the positioning measures for detecting the point defects are insufficient, and the accurate positions of the defects cannot be accurately positioned.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides the system and the method for monitoring the embedded steel wire of the escalator handrail belt, which can be marked in real time, the system and the method monitor the embedded steel wire of the escalator, collect state data for fault analysis and location prediction, provide reliable data support for timely maintenance of the escalator, provide effective technical means for guaranteeing the operation safety of the escalator, and can accurately locate the defect position, monitor the defect position on line in real time, have high reliability and detection precision and are convenient to install and maintain.
In order to achieve the above object, according to one aspect of the present invention, there is provided an escalator handrail embedded steel wire monitoring system capable of real-time marking, comprising a clamping type electromagnetic monitoring device, a motion positioning device and a data acquisition and processing module, wherein:
the clamping type electromagnetic monitoring device comprises a clamping support and three electromagnetic modules arranged on the clamping support, wherein the clamping support is provided with a notch serving as an embedded steel wire rotating channel;
for each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core, an exciting coil and two induction coils, the cross section of the E-shaped magnetic core is E-shaped, the E-shaped magnetic core comprises a yoke part and three polar arms extending out from the yoke part towards the direction of the notch, the three polar arms are two side polar arms and a middle polar arm positioned between the two side polar arms, the exciting coil is installed on the middle polar arm, the induction coil is installed on each side polar arm, and magnetic lines of force emitted by the exciting coil pass through the embedded steel wire and then pass through the induction coils on the two sides to form a closed loop, so that a detection area is formed for detecting magnetic flux; the cross section of the handrail belt cut by the plane where the cross section of the E-shaped magnetic core is located is the cross section of the handrail belt;
the three electromagnetic modules are sequentially arranged on three edges of a rectangle, the electromagnetic modules on two opposite edges of the rectangle are arranged on two sides of the handrail belt in a bilateral symmetry mode so as to respectively detect the embedded steel wire in the arc-shaped part of the handrail belt on the corresponding side, and the electromagnetic module on the other edge is used for detecting the embedded steel wire in the plane part of the handrail belt;
the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the embedded steel wires according to the magnetic flux conditions measured by the electromagnetic modules;
the motion positioning device comprises a supporting rod, a roller and an encoder, wherein one end of the supporting rod is installed on the clamping support, the other end of the supporting rod is installed on the roller, the roller is tightly pressed on the handrail belt to rotate along with the motion of the handrail belt, and the encoder is installed on the roller to realize the positioning of the handrail belt through the rotation of the roller.
Preferably, the motion positioning device further comprises a tension spring, one end of the tension spring is mounted on the clamping bracket, and the other end of the tension spring is mounted on the support rod, so that the roller is always pressed on the handrail belt;
one end of the supporting rod is hinged to the electromagnetic module mounting frame through a hinge shaft.
Preferably, the data acquisition and processing module comprises an on-site acquisition device and a remote monitoring terminal which can be communicated with the on-site acquisition device, the on-site acquisition device is respectively connected with the induction coils of the electromagnetic modules through integrated signal lines, the remote monitoring terminal processes the magnetic flux acquired by the clamping type electromagnetic monitoring device, the magnetic flux is grouped according to the detection areas of different electromagnetic modules to obtain a cross section point cloud chart formed by the magnetic flux detection data of the cross section of the handrail belt, the state of the embedded steel wire in the corresponding detection area is analyzed and judged through the abnormal cross section point cloud chart, the detection area where the defect is located in the cross section is positioned, and therefore the position information of the defect on the cross section of the handrail belt is obtained, and the remote monitoring terminal can also obtain the position information of the defect in the moving direction of the embedded steel wire according to the feedback of the movement.
Preferably, the clamping type electromagnetic monitoring device further comprises a mounting bracket arranged on the clamping bracket, the mounting bracket is arranged on a truss of the escalator, and the clamping type electromagnetic monitoring device is arranged at the edge of the handrail.
Preferably, the clamping type electromagnetic monitoring device is provided in plurality, and they are arranged along a moving direction of the handrail.
Preferably, the E-shaped magnetic core is provided with a mounting boss so as to be mounted on the clamping bracket.
According to another aspect of the invention, the monitoring method of the monitoring system for the steel wire embedded in the escalator handrail belt capable of being marked in real time is also provided, and is characterized by comprising the following steps:
(1) three electromagnetic modules of the clamping type electromagnetic monitoring device respectively acquire magnetic fluxes in corresponding detection areas, and the movement positioning device acquires position information of the detection points of the hand strap along the moving direction of the hand strap along with the movement of the hand strap;
(2) the field acquisition device acquires the magnetic flux and the position information of the detection point of the hand strap along the moving direction of the hand strap and uploads the position information to the data acquisition and processing module through the integrated signal wire;
(3) the field acquisition device transmits all received magnetic fluxes of the hand strap of one escalator and position information of detection points of the hand strap along the moving direction of the hand strap to a remote monitoring terminal of the data acquisition and processing module;
(4) the remote monitoring terminal groups the magnetic fluxes acquired by the clamping type electromagnetic monitoring device according to the detection areas of different electromagnetic modules and obtains a cross section point cloud picture formed by the magnetic flux detection data of the cross section of the hand strap;
(5) screening abnormal section point cloud pictures by a remote monitoring terminal;
(6) the remote monitoring terminal analyzes the abnormal section point cloud picture, firstly compares the magnetic fluxes collected by two induction coils of the same electromagnetic module, secondly compares the magnetic fluxes detected by different electromagnetic modules, and analyzes and judges the state of the detection point of the handrail belt, specifically as follows:
the remote monitoring terminal judges that the detection point of the hand strap is defective if the magnetic fluxes collected by the two induction coils of the electromagnetic module are inconsistent through comparison;
the remote monitoring terminal judges the severity of the defects of the detection point of the handrail belt by comparing the magnetic flux difference degrees detected by different electromagnetic modules;
(7) the remote monitoring terminal generates an analysis result of a detection point of the hand strap and adds detection area information of a position of the embedded steel wire of the hand strap with problems and position information along the moving direction of the hand strap, and positions the position of the defect on the cross section of the hand strap and the position along the moving direction of the hand strap.
Preferably, in the step (5), the remote monitoring terminal merges and stores the abnormal section point cloud picture and the corresponding position information along the moving direction of the embedded steel wire, does not merge the normal section point cloud picture and the position information along the moving direction of the embedded steel wire, separately compresses the abnormal section point cloud picture and the position information, stores the abnormal section point cloud picture and the position information, and automatically deletes the abnormal section point cloud picture after a period of time.
Preferably, the method further comprises the following steps: (8) the remote monitoring terminal carries out early warning on the embedded steel wire state obtained by analysis, and the embedded steel wire state is divided into a plurality of levels according to the severity of bad states, and different modes are used for carrying out early warning on different levels.
Preferably, the method further comprises the following steps: (9) the remote monitoring terminal controls the fluorescent marking device on the clamping support to spray fluorescent agent to the position of the defect of the hand strap so as to remind maintenance personnel of the position of the defect.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1) the invention provides a monitoring system for an embedded steel wire in a hand strap of an escalator, which can mark in real time, utilizes the magnetic-elastic effect, monitors the magnetic flux change of the embedded steel wire in the hand strap according to three detection areas through three electromagnetic modules of a clamping type electromagnetic detection device, judges the defect of the embedded steel wire in the hand strap through the magnetic flux change, locates the detection area in the cross section of the hand strap where the defective steel wire is positioned, records the position of the detection point of the hand strap along the moving direction of the hand strap through a motion positioning device, and can accurately locate the position of the defect on the hand strap by combining the positioning of the detection area in the cross section and the positioning in the moving direction, thereby realizing two-dimensional accurate positioning, marking the position of the defect on the hand strap in real time, providing reliable data support for the timely maintenance of the escalator and ensuring the running safety of the escalator, the maintenance personnel can conveniently find the fault point.
2) According to the monitoring system for the embedded steel wire of the escalator handrail belt capable of being marked in real time, the clamping type sensor device is formed by combining the plurality of clamping type electromagnetic modules, the reliability is high, the detection precision is high, the defect location is accurate, different positions of the embedded steel wire can be monitored simultaneously, the detection efficiency is high, the monitoring device is convenient to install and maintain, the state of the embedded steel wire of the escalator can be effectively monitored, and the monitoring system has good application prospect and popularization value.
Drawings
FIG. 1 is a schematic diagram of a monitoring system for the state of an embedded steel wire in a handrail belt of an escalator, which monitors the embedded steel wire;
FIG. 2 is a schematic cross-sectional view of the monitoring system for the state of the steel wire embedded in the handrail belt of the escalator of the invention;
FIG. 3 is an explosion diagram of the monitoring system for the state of the steel wire embedded in the handrail belt of the escalator;
FIG. 4 is a schematic diagram of an electromagnetic module of the present invention;
FIG. 5 is a schematic view of the magnetic lines of force of one of the electromagnetic modules;
FIG. 6 is a schematic view of a clamping bracket of the monitoring system for the state of the steel wire embedded in the handrail of the escalator;
FIG. 7 is a schematic view of the structure of the kinematic location device of the present invention during detection
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1-7, the monitoring system for the steel wire embedded in the handrail of the escalator capable of being marked in real time comprises a clamping type electromagnetic monitoring device 1, a motion positioning device 2 and a data acquisition and processing module, wherein:
the clamping type electromagnetic monitoring device 1 comprises a clamping bracket 104 and three electromagnetic modules arranged on the clamping bracket 104, wherein the clamping bracket 104 is provided with a notch used as a rotating channel of an embedded steel wire 401; the hand strap 4 has hand strap rubber 402 and inlays the embedded steel wire 401 in hand strap rubber 402, and hand strap 4 can pass the notch, leaves the space between hand strap 4 and the centre gripping formula electromagnetism monitoring devices 1, and both contactless does not influence the motion of hand strap 4, can realize the monitoring of electromagnetism module to the hand strap 4 different faces.
For each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core, an excitation coil and two induction coils, the cross section of the E-shaped magnetic core is E-shaped, the E-shaped magnetic core comprises a yoke part and three pole arms extending from the yoke part towards the direction of the notch, the three pole arms are respectively two side pole arms and a middle pole arm positioned between the two side pole arms, the excitation coil is installed on the middle pole arm, the induction coil is installed on each side pole arm, and magnetic lines of force 106 emitted by the excitation coil pass through an embedded steel wire 401 and then pass through the induction coils on the two sides to form a closed loop, so that a detection area is formed to detect magnetic flux; the section of the handrail belt 4 cut by the plane where the cross section of the E-shaped magnetic core is located is the cross section of the handrail belt 4; preferably, the E-shaped magnetic core is provided with a mounting boss to facilitate mounting the E-shaped magnetic core on the clamping bracket 104.
Referring to fig. 2 and 3, the three electromagnetic modules are sequentially arranged on three sides of a rectangle, and respectively correspond to three detection areas, the detection range completely covers the whole section of the handrail 4, and the three electromagnetic modules are respectively a first electromagnetic module 101, a second electromagnetic module 102 and a third electromagnetic module 103, which are installed in a slot of a clamping bracket 104 through a fixing buckle 105. The clamping bracket 104 is a U-shaped frame to facilitate the installation of the three electromagnetic modules; the electromagnetic modules ((the second electromagnetic module 102 and the third electromagnetic module 103) on two opposite sides of the rectangle are arranged on both sides of the handrail 4 in bilateral symmetry to respectively detect the embedded steel wire 401 in the arc-shaped part of the handrail 4 on the corresponding side, and the electromagnetic module (the first electromagnetic module 101) on the other side is used for detecting the embedded steel wire 401 in the plane part of the handrail 4;
the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the embedded steel wire 401 through the magnetic flux condition measured by the electromagnetic modules; the state of the detection point of the handrail belt 4 is analyzed and judged by comparing the magnetic flux data detected by the electromagnetic modules and the magnetic flux data detected by different electromagnetic modules through magnetic flux detection for analyzing the stress of the embedded steel wire 401 of the handrail belt 4.
The motion positioning device 2 comprises a support rod 202, a roller 203 and an encoder, wherein one end of the support rod 202 is installed on the clamping support 104, the other end of the support rod is installed on the roller 203, the roller 203 is tightly pressed on the hand strap 4 to rotate along with the motion of the hand strap 4, and the encoder is installed on the roller 203 to realize the positioning of the hand strap through the rotation of the roller 203.
Further, the motion positioning device 2 further comprises a tension spring 201, one end of the tension spring 201 is mounted on the clamping bracket 104, and the other end of the tension spring 201 is mounted on the support rod 202, so that the roller 203 is always pressed on the handrail 4;
one end of the supporting rod 202 is hinged to the electromagnetic module mounting frame through a hinge shaft. The tension spring 201 provides pressing force for the motion positioning device 2, so that the roller 203 is not easy to derail when rotating, the encoder is used for recording the rotating number of turns of the roller 203, positioning the position of a detection point of the hand strap 4 along the moving direction of the hand strap 4, and realizing the positioning of defects along the moving direction of the hand strap 4. The detection point of the handrail 4 refers to the position of the handrail 4 detected by the clamping type electromagnetic monitoring device 1, and more specifically, the position of the handrail embedded steel wire 401 detected by the clamping type electromagnetic monitoring device 1.
Further, the data acquisition processing module comprises a field acquisition device and a remote monitoring terminal which can be communicated with the field acquisition device, the field acquisition device is respectively connected with the induction coils of the electromagnetic modules through an integrated signal wire 3, the remote monitoring terminal processes the magnetic flux collected by the clamping type electromagnetic monitoring device 1, grouping according to the detection areas of different electromagnetic modules to obtain a cross section point cloud picture formed by magnetic flux detection data of the cross section of the embedded steel wire 401, the state of the embedded steel wire 401 in the corresponding detection area is judged through the abnormal section point cloud picture analysis, the detection area of the defect in the section is positioned, therefore, the position information of the defect on the cross section of the handrail 4 can be obtained, and the remote monitoring terminal can also obtain the position information of the defect in the moving direction of the embedded steel wire 401 according to the feedback of the motion positioning device 2.
The electromagnetic module of centre gripping formula electromagnetic monitoring device 1 adopts general modularized design, connects standardized integrated signal line 3, integrated signal line 3 is connected with on-the-spot collection system through standardized joint, directly pulls out the signal line joint when electromagnetic module breaks down and carries out whole change, on-the-spot collection system receives the embedded steel wire 401 magnetic field data of all handrail belts of an automatic escalator to carry out primary processing, and wireless network or wired mode transmission such as 5G give remote monitoring terminal again.
Further, the clamping type electromagnetic monitoring device 1 further comprises a mounting bracket 6 arranged on the clamping bracket 104, the mounting bracket 6 is arranged on a truss of a truss machine room 5 of the escalator, and the clamping type electromagnetic monitoring device 1 is arranged on the edge of the hand strap 4.
Further, the clamp-type electromagnetic monitoring device 1 is provided in plural, and they are arranged along the moving direction of the handrail 4. They are separately monitored and then compared in combination with each other, thereby improving the accuracy of monitoring.
The fluorescent marking device 107 is arranged on the clamping support 104 of the clamping type electromagnetic monitoring device 1, and when the defect of the steel wire of the hand strap 4 is detected, the fluorescent marking device 107 can spray fluorescent agent on the hand strap 4 in real time to remind maintenance personnel of the fault position.
According to another aspect of the invention, the monitoring method of the monitoring system for the steel wire embedded in the escalator handrail belt capable of being marked in real time is also provided, and comprises the following steps:
(1) three electromagnetic modules of the clamping type electromagnetic monitoring device 1 respectively acquire magnetic fluxes in corresponding detection areas, and the motion positioning device 2 acquires position information of the detection points of the hand strap 4 along the moving direction of the hand strap 4 along with the motion of the hand strap 4;
(2) the magnetic flux and the position information of the detection point of the hand strap 4 along the moving direction of the hand strap 4 are acquired and transmitted to the field acquisition device of the data acquisition processing module through the integrated signal wire 3;
(3) the field acquisition device transmits all received magnetic fluxes of the hand strap 4 of the escalator and position information of detection points of the hand strap 4 along the moving direction of the hand strap 4 to a remote monitoring terminal of the data acquisition and processing module;
(4) the remote monitoring terminal groups the magnetic fluxes acquired by the clamping type electromagnetic monitoring device 1 according to the detection areas of different electromagnetic modules and obtains a cross section point cloud picture formed by the magnetic flux detection data of the cross section of the hand strap 4; a cross-section point cloud chart is formed by magnetic flux detection data of three detection areas at the same part of the main driving wheel 4, and a plurality of cross-section point cloud charts are arranged along the moving direction of the step chain 4;
(5) screening abnormal section point cloud pictures by a remote monitoring terminal; the remote monitoring terminal merges and stores the abnormal section point cloud picture and the corresponding position information along the moving direction of the embedded steel wire 401, does not merge the normal section point cloud picture and the position information along the moving direction of the embedded steel wire 401, separately compresses the abnormal section point cloud picture and the position information, stores the abnormal section point cloud picture and the position information, and automatically deletes the abnormal section point cloud picture after a period of time;
(6) the remote monitoring terminal analyzes the abnormal section point cloud picture, firstly compares the magnetic fluxes collected by two induction coils of the same electromagnetic module, secondly compares the magnetic fluxes detected by different electromagnetic modules, and analyzes and judges the state of the detection point of the handrail belt 4, specifically as follows:
the remote monitoring terminal judges that the detection point of the hand strap 4 has defects by comparison if the magnetic fluxes collected by the two induction coils of the electromagnetic module are inconsistent;
the remote monitoring terminal judges the severity of the defects of the detection point of the handrail belt 4 by comparing the magnetic flux difference degrees detected by different electromagnetic modules;
(7) the remote monitoring terminal generates an analysis result of a detection point of the hand strap 4 and adds detection area information of the part 401 of the hand strap embedded steel wire with problems and position information along the moving direction of the hand strap 4, and positions the position of the defect on the cross section of the hand strap 4 and the position along the moving direction of the hand strap 4.
(8) The remote monitoring terminal carries out early warning on the state of the embedded steel wire 401 obtained by analysis, and the state is divided into a plurality of levels according to the severity of bad states, and different modes are used for carrying out early warning on different levels.
(9) The remote monitoring terminal controls the fluorescent marking device 107 on the clamping bracket 104 to spray fluorescent agent to the defect position of the handrail 4 so as to remind maintenance personnel of the defect position.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. But embedded steel wire monitoring system in real-time mark's automatic escalator handrail area, its characterized in that, including centre gripping formula electromagnetic monitoring device, motion positioner and data acquisition processing module, wherein:
the clamping type electromagnetic monitoring device comprises a clamping support and three electromagnetic modules arranged on the clamping support, wherein the clamping support is provided with a notch serving as an embedded steel wire rotating channel;
for each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core, an exciting coil and two induction coils, the cross section of the E-shaped magnetic core is E-shaped, the E-shaped magnetic core comprises a yoke part and three polar arms extending out from the yoke part towards the direction of the notch, the three polar arms are two side polar arms and a middle polar arm positioned between the two side polar arms, the exciting coil is installed on the middle polar arm, the induction coil is installed on each side polar arm, and magnetic lines of force emitted by the exciting coil pass through the embedded steel wire and then pass through the induction coils on the two sides to form a closed loop, so that a detection area is formed for detecting magnetic flux; the cross section of the handrail belt cut by the plane where the cross section of the E-shaped magnetic core is located is the cross section of the handrail belt;
the three electromagnetic modules are sequentially arranged on three edges of a rectangle, the electromagnetic modules on two opposite edges of the rectangle are arranged on two sides of the handrail belt in a bilateral symmetry mode so as to respectively detect the embedded steel wire in the arc-shaped part of the handrail belt on the corresponding side, and the electromagnetic module on the other edge is used for detecting the embedded steel wire in the plane part of the handrail belt;
the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the embedded steel wires according to the magnetic flux conditions measured by the electromagnetic modules;
the motion positioning device comprises a supporting rod, a roller and an encoder, wherein one end of the supporting rod is installed on the clamping support, the other end of the supporting rod is installed on the roller, the roller is tightly pressed on the handrail belt to rotate along with the motion of the handrail belt, and the encoder is installed on the roller to realize the positioning of the handrail belt through the rotation of the roller.
2. The system for monitoring the embedded steel wire in the handrail of the escalator capable of being marked in real time according to claim 1, wherein the motion positioning device further comprises a tension spring, one end of the tension spring is installed on the clamping bracket, and the other end of the tension spring is installed on the supporting rod, so that the roller is always pressed on the handrail;
one end of the supporting rod is hinged to the electromagnetic module mounting frame through a hinge shaft.
3. The system for monitoring the embedded steel wire in the handrail of the escalator capable of being marked in real time according to claim 1, wherein the data acquisition and processing module comprises an on-site acquisition device and a remote monitoring terminal capable of communicating with the on-site acquisition device, the on-site acquisition device is respectively connected with the induction coil of each electromagnetic module through an integrated signal wire, the remote monitoring terminal processes the magnetic flux acquired by the clamping type electromagnetic monitoring device, the magnetic flux is grouped according to the detection areas of different electromagnetic modules to obtain a cross section point cloud chart formed by the magnetic flux detection data of the cross section of the handrail, the state of the embedded steel wire in the corresponding detection area is judged through the analysis of the abnormal cross section point cloud chart, the detection area where the defect is located in the cross section is positioned, so that the position information of the defect on the cross section of the handrail is obtained, and the remote monitoring terminal can also obtain the position information of the defect in the moving direction of the embedded steel wire according to the And (4) information.
4. The escalator handrail embedded steel wire monitoring system capable of being marked in real time according to claim 1, characterized in that the clamping type electromagnetic monitoring device further comprises a mounting bracket arranged on the clamping bracket, the mounting bracket is mounted on a truss of the escalator, and the clamping type electromagnetic monitoring device is arranged at the edge of the handrail.
5. The real-time markable escalator handrail belt embedded steel wire monitoring system according to claim 1, characterized in that the clamping type electromagnetic monitoring device is provided in plurality and they are arranged along the moving direction of the handrail belt.
6. The escalator handrail embedded steel wire monitoring system capable of being marked in real time according to claim 1, wherein a mounting boss is arranged on the E-shaped magnetic core so as to mount the E-shaped magnetic core on a clamping bracket.
7. The monitoring method of the monitoring system for the state of the steel wire embedded in the escalator handrail belt capable of being marked in real time according to any one of claims 1 to 6 is characterized by comprising the following steps of:
(1) three electromagnetic modules of the clamping type electromagnetic monitoring device respectively acquire magnetic fluxes in corresponding detection areas, and the movement positioning device acquires position information of the detection points of the hand strap along the moving direction of the hand strap along with the movement of the hand strap;
(2) the field acquisition device acquires the magnetic flux and the position information of the detection point of the hand strap along the moving direction of the hand strap and uploads the position information to the data acquisition and processing module through the integrated signal wire;
(3) the field acquisition device transmits all received magnetic fluxes of the hand strap of one escalator and position information of detection points of the hand strap along the moving direction of the hand strap to a remote monitoring terminal of the data acquisition and processing module;
(4) the remote monitoring terminal groups the magnetic fluxes acquired by the clamping type electromagnetic monitoring device according to the detection areas of different electromagnetic modules and obtains a cross section point cloud picture formed by the magnetic flux detection data of the cross section of the hand strap;
(5) screening abnormal section point cloud pictures by a remote monitoring terminal;
(6) the remote monitoring terminal analyzes the abnormal section point cloud picture, firstly compares the magnetic fluxes collected by two induction coils of the same electromagnetic module, secondly compares the magnetic fluxes detected by different electromagnetic modules, and analyzes and judges the state of the detection point of the handrail belt, specifically as follows:
the remote monitoring terminal judges that the detection point of the hand strap is defective if the magnetic fluxes collected by the two induction coils of the electromagnetic module are inconsistent through comparison;
the remote monitoring terminal judges the severity of the defects of the detection point of the handrail belt by comparing the magnetic flux difference degrees detected by different electromagnetic modules;
(7) the remote monitoring terminal generates an analysis result of a detection point of the hand strap and adds detection area information of a position of the embedded steel wire of the hand strap with problems and position information along the moving direction of the hand strap, and positions the position of the defect on the cross section of the hand strap and the position along the moving direction of the hand strap.
8. The monitoring method according to claim 7, wherein in the step (5), the remote monitoring terminal merges and stores the abnormal section point cloud picture and the corresponding position information along the moving direction of the embedded steel wire, and the normal section point cloud picture and the position information along the moving direction of the embedded steel wire are not merged, are stored after being compressed separately, and are automatically deleted after a period of time.
9. The monitoring method of claim 7, further comprising: (8) the remote monitoring terminal carries out early warning on the embedded steel wire state obtained by analysis, and the embedded steel wire state is divided into a plurality of levels according to the severity of bad states, and different modes are used for carrying out early warning on different levels.
10. The monitoring method of claim 7, further comprising: (9) the remote monitoring terminal controls the fluorescent marking device on the clamping support to spray fluorescent agent to the position of the defect of the hand strap so as to remind maintenance personnel of the position of the defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464902.2A CN112456293A (en) | 2020-12-14 | 2020-12-14 | Monitoring system and method capable of marking embedded steel wires in escalator handrail in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464902.2A CN112456293A (en) | 2020-12-14 | 2020-12-14 | Monitoring system and method capable of marking embedded steel wires in escalator handrail in real time |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113753724A (en) * | 2021-08-02 | 2021-12-07 | 江苏威尔曼科技有限公司 | Escalator automatic spraying disinfectant sterilizing and disinfecting device |
| CN113928964A (en) * | 2021-09-30 | 2022-01-14 | 中铁第四勘察设计院集团有限公司 | Method for detecting tightness degree of escalator handrail |
| WO2022249512A1 (en) * | 2021-05-27 | 2022-12-01 | 三菱電機株式会社 | Moving handrail inspection device and moving handrail inspection system |
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2020
- 2020-12-14 CN CN202011464902.2A patent/CN112456293A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022249512A1 (en) * | 2021-05-27 | 2022-12-01 | 三菱電機株式会社 | Moving handrail inspection device and moving handrail inspection system |
| JP7460021B2 (en) | 2021-05-27 | 2024-04-02 | 三菱電機株式会社 | Moving handrail inspection device and moving handrail inspection system |
| CN113753724A (en) * | 2021-08-02 | 2021-12-07 | 江苏威尔曼科技有限公司 | Escalator automatic spraying disinfectant sterilizing and disinfecting device |
| CN113928964A (en) * | 2021-09-30 | 2022-01-14 | 中铁第四勘察设计院集团有限公司 | Method for detecting tightness degree of escalator handrail |
| CN113928964B (en) * | 2021-09-30 | 2023-06-20 | 中铁第四勘察设计院集团有限公司 | Method for detecting tightness degree of escalator handrail |
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