CN112456291A - Escalator main driving wheel state monitoring system and method - Google Patents
Escalator main driving wheel state monitoring system and method Download PDFInfo
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- CN112456291A CN112456291A CN202011462951.2A CN202011462951A CN112456291A CN 112456291 A CN112456291 A CN 112456291A CN 202011462951 A CN202011462951 A CN 202011462951A CN 112456291 A CN112456291 A CN 112456291A
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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
- B66B29/00—Safety devices of escalators or moving walkways
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
本发明公开了一种自动扶梯主驱动轮状态监测系统，包括夹持式电磁监测装置、角度定位装置和数据采集处理模块，夹持式电磁监测装置包括夹持支架和三个电磁模块；电磁模块包括E型磁芯、激励线圈和两个感应线圈，激励线圈发射的磁力线经过主驱动轮，再穿过两侧的感应线圈形成闭合回路，形成一个检测区域；数据采集处理模块与各电磁模块的感应线圈分别连接，以通过磁通量情况，对主驱动轮的缺陷进行检测；角度定位装置安装在所述主驱动轮的旋转轴上，以通过所述主驱动轮的转动实现对所述主驱动轮的定位。本发明通过三组电磁模块检测主驱动轮的磁通量变化，判断和定位缺陷，为自动扶梯的及时检修提供可靠的数据支持，保障自动扶梯的运行安全。
The invention discloses a state monitoring system for a main driving wheel of an escalator, comprising a clamping electromagnetic monitoring device, an angle positioning device and a data acquisition and processing module. The clamping electromagnetic monitoring device includes a clamping bracket and three electromagnetic modules; the electromagnetic module It includes E-type magnetic core, excitation coil and two induction coils. The magnetic field lines emitted by the excitation coil pass through the main driving wheel, and then pass through the induction coils on both sides to form a closed loop to form a detection area; The induction coils are respectively connected to detect the defects of the main driving wheel through the magnetic flux condition; the angle positioning device is installed on the rotating shaft of the main driving wheel, so as to realize the detection of the main driving wheel through the rotation of the main driving wheel positioning. The invention detects the change of the magnetic flux of the main driving wheel through three sets of electromagnetic modules, judges and locates the defects, provides reliable data support for the timely maintenance of the escalator, and ensures the safe operation 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 the state of a main driving wheel of an escalator.
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 main driving wheel is a component for transmitting power of the escalator, is a key component of the escalator and is of great importance to the running safety of the escalator. A plurality of gear teeth are distributed on the main driving wheel of the escalator, and the escalator is difficult to inspect through manual work when the escalator is internally defected, so that hidden dangers can be left, the running state of the escalator is influenced, and the life and property safety of passengers is threatened. Magnetic field detection is used as a nondestructive detection method and can be applied to the state monitoring of the main driving wheel of the escalator. At present, in the patent that is 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 traction steel belt of an escalator, but the patent discloses a method for detecting the state of a main driving belt by the electromagnetic sensor, which is an open-loop magnetic flux sensor, the detection precision is low, and only one side of the main driving belt can be detected, the detection range does not realize the radial full coverage of the main driving belt, the radial detection area positioning cannot be performed on the defect of the main driving belt, the patent sensor only has one set of electromagnet modules, once the modules are failed, the modules cannot normally work, 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 main driving wheel 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
The invention provides a system and a method for monitoring the state of a main driving wheel of an escalator, aiming at the defects or the improvement requirements of the prior art, the system and the method are used for monitoring the main driving wheel of the escalator, acquiring state data, analyzing and positioning faults, providing reliable data support for timely maintenance of the escalator, providing an effective technical means for guaranteeing the operation safety of the escalator, and achieving the purposes of accurate defect position positioning, high reliability of online real-time monitoring, high detection precision and convenient installation and maintenance.
In order to achieve the above object, according to one aspect of the present invention, there is provided an escalator main driving wheel state monitoring system, comprising a clamping type electromagnetic monitoring device, an angle positioning device and a data acquisition and processing module, wherein:
the clamping type electromagnetic monitoring device comprises a clamping bracket and three electromagnetic modules arranged on the clamping bracket, wherein the clamping bracket is provided with a notch serving as a main driving wheel rotating channel;
for each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core, an excitation coil and two induction coils, 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 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 emitted by the excitation coil pass through a main driving wheel 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 E-shaped magnetic core cut by a plane along the radial direction of the main driving wheel is E-shaped;
the three electromagnetic modules are sequentially arranged on three edges of a rectangle, yoke parts of the electromagnetic modules on two opposite edges of the rectangle are respectively parallel to the side surfaces of the main driving wheel, and yoke parts of the electromagnetic modules on the other edge of the rectangle are parallel to the central line of the main driving wheel;
the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the main driving wheel according to the magnetic flux condition measured by the electromagnetic modules;
the angle positioning device is installed on a rotating shaft of the main driving wheel so as to position the main driving wheel through rotation of the main driving wheel.
Preferably, the angular positioning device is an encoder, a gyroscope or an angle sensor.
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 field acquisition device is respectively connected with the induction coils of the electromagnetic modules through integrated signal wires, the remote monitoring terminal processes the magnetic flux collected by the clamping type electromagnetic monitoring device, grouping according to the detection areas of different electromagnetic modules to obtain a section point cloud picture formed by magnetic flux detection data of the section of the main driving wheel, analyzing and judging the state of the main driving wheel in the corresponding detection area through the abnormal section point cloud picture, positioning the detection area where the defect is located in the section of the main driving wheel, therefore, the position information of the defects on the section of the main driving wheel is obtained, and the remote monitoring terminal can also obtain the position information of the defects on the circumferential direction of the main driving wheel according to the feedback of the angle positioning device.
Preferably, the clamping type electromagnetic monitoring device further comprises a fixed support arranged on the clamping support, the fixed support is arranged on a truss of the escalator, and the clamping type electromagnetic monitoring device is arranged at the edge of the main driving wheel.
Preferably, the clamping type electromagnetic monitoring device is provided in plurality, and they are arranged along the circumferential direction of the main driving wheel.
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, a monitoring method adopting the escalator main driving wheel state monitoring system is further provided, and is characterized by comprising the following steps:
(1) each electromagnetic module of the clamping type electromagnetic monitoring device respectively collects magnetic flux in the corresponding detection area, and the angle positioning device collects position information of the detection point of the main driving wheel along the circumferential direction of the main driving wheel along with the movement of the main driving wheel;
(2) the field acquisition device acquires the magnetic flux and the position information of the detection point of the main driving wheel along the circumferential direction of the main driving wheel 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 main driving wheel of the escalator and position information of detection points of the main driving wheel along the circumferential direction of the main driving wheel 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 section point cloud chart formed by magnetic flux detection data of the section of the main driving wheel;
(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 main driving wheel, specifically as follows:
the remote monitoring terminal judges that the detection point of the main driving wheel has defects by comparison if the magnetic fluxes acquired by the two induction coils of the same electromagnetic module are inconsistent;
the remote monitoring terminal judges the severity of the defects of the detection point of the main driving wheel 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 main driving wheel, adds detection area information of a section where the main driving wheel with a problem is located and position information along the circumferential direction of the main driving wheel, and positions the position of the defect on the section of the main driving wheel and the position along the circumferential direction of the main driving wheel.
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 circumferential direction of the main driving wheel, and the normal section point cloud picture and the position information along the circumferential direction of the main driving wheel are not merged, are separately compressed and stored, and are automatically deleted after a period of time.
Preferably, the method further comprises the following steps: (8) the remote monitoring terminal carries out early warning on the state of the main driving wheel obtained through analysis, the main driving wheel state is divided into a plurality of levels according to the severity of the bad state, and different modes are used for carrying out early warning in different levels.
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 state monitoring system for a main driving wheel of an escalator, which utilizes a magnetic-elastic effect, detects the magnetic flux change of the main driving wheel according to three detection areas through three groups of electromagnetic modules of a clamping type electromagnetic detection device, judges the defect of the main driving wheel through the change of the magnetic flux, locates the detection area in the section of the main driving wheel where the defect is located, records the radial position of the detection point of the main driving wheel in the main driving wheel through an angle positioning device, and can accurately locate the position of the defect on the main driving wheel by combining the positioning of the detection areas and the angle positioning, thereby realizing the accurate positioning of the position of the defect on the section and the circumferential direction of the main driving wheel, providing reliable data support for the timely overhaul of the escalator and ensuring the operation safety of the escalator.
2) According to the escalator main driving wheel state monitoring system, the clamping type sensor device is formed by combining the clamping type electromagnetic modules, the reliability is high, the detection precision is high, the defect location is accurate, the main driving wheel can be monitored at different positions, the detection efficiency is high, the monitoring device is convenient to install and maintain, the state of the escalator main driving wheel can be effectively monitored, and the escalator main driving wheel state monitoring system has good application prospect and popularization value.
Drawings
Fig. 1 is a schematic view of a main drive wheel condition monitoring system of an escalator of the present invention monitoring the main drive wheel;
FIG. 2 is a schematic cross-sectional view of a system for monitoring the condition of the main drive wheel of an escalator in accordance with the present invention;
fig. 3 is an exploded view of the escalator main drive wheel condition monitoring system of the present invention;
fig. 4 is a schematic structural diagram of one of the electromagnetic modules in the present invention.
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 to 4, a system for monitoring the state of a main driving wheel 4 of an escalator comprises a clamping type electromagnetic monitoring device 1, an angle 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 a main driving wheel 4; the main driving wheel 4 can penetrate through the notch, a gap is reserved between the main driving wheel 4 and the clamping type electromagnetic monitoring device 1, the main driving wheel and the clamping type electromagnetic monitoring device are in no contact, the movement of the main driving wheel 4 is not influenced, and the monitoring of different radial positions of the main driving wheel 4 is realized.
For each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core 11, an excitation coil 12 and two induction coils 13, the E-shaped magnetic core 11 comprises a yoke portion 111 and three pole arms extending from the yoke portion 111 towards the direction of the notch, the three pole arms are two side pole arms 113 and a middle pole arm 112 located between the two side pole arms 113, the excitation coil 12 is mounted on the middle pole arm 112, one induction coil 13 is mounted on each side pole arm 113, magnetic lines of force emitted by the excitation coil 12 pass through the main driving wheel 4 and then pass through the induction coils 13 on the two sides to form a closed loop, so that a detection area is formed to detect magnetic flux; wherein, the section shape of the E-shaped magnetic core 11 cut by a plane along the radial direction of the main driving wheel 4 is E-shaped; preferably, the E-shaped magnetic core 11 may be provided with a mounting boss 14 to facilitate mounting the E-shaped magnetic core 11 on the clamping bracket 104.
Since the closed loop of each of the electromagnetic modules forms one detection area, three electromagnetic modules can form three detection areas, and the three detection areas can cover detection points of the main driving wheel 4. The detection point of the main driving wheel 4 is a position on the main driving wheel 4 detected by the clamping type electromagnetic monitoring device 1.
Referring to fig. 2, the three electromagnetic modules are arranged in sequence on three sides of a rectangle; the three electromagnetic modules are respectively a first electromagnetic module 101, a second electromagnetic module 102 and a third electromagnetic module 103, which are mounted in a slot of a clamping bracket 104 through a fixing buckle 105. The clamping bracket 104 is a U-shaped bracket to facilitate the mounting of the three electromagnetic modules. The yoke parts 111 of the electromagnetic modules (the second electromagnetic module 102 and the third electromagnetic module 103) on two opposite sides of the rectangle are respectively parallel to the side surfaces of the main driving wheel 4, and the size of the two electromagnetic modules can be adjusted to adapt to the size of the main driving wheel 4; the yoke portion 111 of the electromagnetic module on the other side (first electromagnetic module 101) is parallel to the center line of the main driving wheel 4;
the data acquisition processing module is respectively connected with the induction coils 13 of the electromagnetic modules so as to analyze the stress of the step chain and detect the defects of the main driving wheel 4 according to the magnetic flux condition measured by the electromagnetic modules;
the angle positioning device 2 is installed on a rotating shaft of the main driving wheel 4 to realize the positioning of the main driving wheel 4 through the rotation of the main driving wheel 4, so that the position of a detection point corresponding to the clamping type electromagnetic monitoring device 1 along the circumferential direction of the main driving wheel 4 can be known. The angle positioning device 2 records the rotating angle of the main driving wheel 4 at any time, and the collected angle data is used for positioning the circumferential position of the detection point on the main driving wheel 4 so as to realize circumferential defect positioning. Preferably, the angular positioning device 2 is an encoder, a gyroscope or an angle sensor.
Further, the data acquisition processing module comprises an on-site acquisition device and a remote monitoring terminal which can communicate with the on-site acquisition device, the on-site acquisition device is respectively connected with the induction coils 13 of the electromagnetic modules through an integrated signal wire 3, the remote monitoring terminal processes the magnetic flux acquired by the clamping type electromagnetic monitoring device 1, groups the magnetic flux according to the detection areas of different electromagnetic modules to obtain a section point cloud chart formed by the magnetic flux detection data of the section of the main driving wheel 4, analyzes and judges the state of the main driving wheel 4 in the corresponding detection area through the abnormal section point cloud chart, and positions the detection area where the defect is located in the section of the main driving wheel 4 so as to obtain the position information of the defect on the section of the main driving wheel 4, and the remote monitoring terminal can also obtain the position information of the defect on the circumferential direction of the main driving wheel 4 according to the feedback of the angle positioning device 2, therefore, the defect is accurately positioned, reliable data support is provided for timely maintenance of the escalator, and the operation safety of the escalator is guaranteed.
The electromagnetic module of centre gripping formula electromagnetic monitoring device 1 adopts general modular 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, and on-the-spot collection system receives 4 magnetic field data of all main drive wheels 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 fixing support 6 arranged on the clamping support 104, the fixing support 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 at the edge of the main driving wheel 4.
Further, referring to fig. 2, the clamp-type electromagnetic monitoring device 1 is provided in plurality and they are arranged along the circumferential direction of the main driving wheel. They are separately monitored and then compared in combination with each other, thereby improving the accuracy of monitoring.
According to another aspect of the invention, a monitoring method adopting the escalator main driving wheel 4 state monitoring system is also provided, and comprises the following steps:
(1) each electromagnetic module of the clamping type electromagnetic monitoring device 1 respectively collects magnetic flux in a corresponding detection area, and the angle positioning device 2 collects position information of a detection point of the main driving wheel 4 along the circumferential direction of the main driving wheel 4 along with the movement of the main driving wheel 4;
(2) the magnetic flux and the position information of the detection point of the main driving wheel 4 along the circumferential direction of the main driving wheel 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 main driving wheel 4 of the escalator and position information of detection points of the main driving wheel 4 along the circumferential direction of the main driving wheel 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 section point cloud chart formed by the magnetic flux detection data of the section of the main driving wheel 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 circumferential direction of the main driving wheel 4, the normal section point cloud picture and the position information along the circumferential direction of the main driving wheel 4 are not merged, are stored after being compressed separately, and are automatically deleted after a period of time;
(6) the remote monitoring terminal analyzes the abnormal section point cloud picture, firstly compares the magnetic fluxes collected by the two induction coils 13 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 main driving wheel 4, specifically as follows:
by comparison, if the magnetic fluxes acquired by the two induction coils 13 of the same electromagnetic module are inconsistent, the remote monitoring terminal determines that the detection point of the main driving wheel 4 has a defect, and thus the detection point of the main driving wheel 4, which is detected correspondingly in the detection area formed by the electromagnetic module, has a defect;
the remote monitoring terminal judges the severity of the defect at the detection point of the main driving wheel 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 main driving wheel 4, adds detection area information of a section where the main driving wheel 4 with problems is located and position information along the circumferential direction of the main driving wheel 4, and positions the position of a defect on the section of the main driving wheel 4 and the position along the circumferential direction of the main driving wheel 4;
(8) the remote monitoring terminal carries out early warning on the state of the main driving wheel 4 obtained through analysis, the state is divided into a plurality of levels according to the severity of the bad state, and different modes are used for carrying out early warning on different levels.
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 (9)
1. The utility model provides an automatic staircase main drive wheel state monitoring system which characterized in that, includes centre gripping formula electromagnetism monitoring devices, angle positioner and data acquisition and processing module, wherein:
the clamping type electromagnetic monitoring device comprises a clamping bracket and three electromagnetic modules arranged on the clamping bracket, wherein the clamping bracket is provided with a notch serving as a main driving wheel rotating channel;
for each electromagnetic module, each electromagnetic module comprises an E-shaped magnetic core, an excitation coil and two induction coils, 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 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 emitted by the excitation coil pass through a main driving wheel 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 E-shaped magnetic core cut by a plane along the radial direction of the main driving wheel is E-shaped;
the three electromagnetic modules are sequentially arranged on three edges of a rectangle, yoke parts of the electromagnetic modules on two opposite edges of the rectangle are respectively parallel to the side surfaces of the main driving wheel, and yoke parts of the electromagnetic modules on the other edge of the rectangle are parallel to the central line of the main driving wheel;
the data acquisition processing module is respectively connected with the induction coils of the electromagnetic modules so as to detect the defects of the main driving wheel according to the magnetic flux condition measured by the electromagnetic modules;
the angle positioning device is installed on a rotating shaft of the main driving wheel so as to position the main driving wheel through rotation of the main driving wheel.
2. The escalator main drive wheel condition monitoring system according to claim 1, wherein the angular positioning device is an encoder, gyroscope, or angular sensor.
3. Escalator main drive wheel condition monitoring system according to claim 1, 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 integrated signal wires, the remote monitoring terminal processes the magnetic flux collected by the clamping type electromagnetic monitoring device, grouping according to the detection areas of different electromagnetic modules to obtain a section point cloud picture formed by magnetic flux detection data of the section of the main driving wheel, analyzing and judging the state of the main driving wheel in the corresponding detection area through the abnormal section point cloud picture, positioning the detection area where the defect is located in the section of the main driving wheel, therefore, the position information of the defects on the section of the main driving wheel is obtained, and the remote monitoring terminal can also obtain the position information of the defects on the circumferential direction of the main driving wheel according to the feedback of the angle positioning device.
4. The escalator main drive wheel condition monitoring system of claim 1, wherein the clamp-on electromagnetic monitoring device further comprises a fixed bracket disposed on the clamp bracket, the fixed bracket being mounted on a truss of the escalator, the clamp-on electromagnetic monitoring device being disposed at an edge of the main drive wheel.
5. Escalator main drive wheel condition monitoring system according to claim 1, characterized in that the clamping electromagnetic monitoring device is provided in plurality and they are arranged along the circumference of the main drive wheel.
6. The escalator main drive wheel condition monitoring system according to claim 1, wherein said E-core is provided with mounting bosses to facilitate mounting of said E-core on a clamping bracket.
7. The monitoring method of the escalator main driving wheel state monitoring system according to any one of claims 1-6, characterized by comprising the following steps:
(1) each electromagnetic module of the clamping type electromagnetic monitoring device respectively collects magnetic flux in the corresponding detection area, and the angle positioning device collects position information of the detection point of the main driving wheel along the circumferential direction of the main driving wheel along with the movement of the main driving wheel;
(2) the field acquisition device acquires the magnetic flux and the position information of the detection point of the main driving wheel along the circumferential direction of the main driving wheel 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 main driving wheel of the escalator and position information of detection points of the main driving wheel along the circumferential direction of the main driving wheel 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 section point cloud chart formed by magnetic flux detection data of the section of the main driving wheel;
(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 main driving wheel, specifically as follows:
the remote monitoring terminal judges that the detection point of the main driving wheel has defects by comparison if the magnetic fluxes acquired by the two induction coils of the same electromagnetic module are inconsistent;
the remote monitoring terminal judges the severity of the defects of the detection point of the main driving wheel 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 main driving wheel, adds detection area information of a section where the main driving wheel with a problem is located and position information along the circumferential direction of the main driving wheel, and positions the position of the defect on the section of the main driving wheel and the position along the circumferential direction of the main driving wheel.
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 circumferential direction of the main driving wheel, and the normal section point cloud picture and the position information along the circumferential direction of the main driving wheel 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 state of the main driving wheel obtained through analysis, the main driving wheel state is divided into a plurality of levels according to the severity of the bad state, and different modes are used for carrying out early warning in different levels.
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