CN109019211B - Elevator maintenance operation auxiliary device - Google Patents

Elevator maintenance operation auxiliary device Download PDF

Info

Publication number
CN109019211B
CN109019211B CN201810873593.0A CN201810873593A CN109019211B CN 109019211 B CN109019211 B CN 109019211B CN 201810873593 A CN201810873593 A CN 201810873593A CN 109019211 B CN109019211 B CN 109019211B
Authority
CN
China
Prior art keywords
maintenance
elevator
information
fault
replacement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810873593.0A
Other languages
Chinese (zh)
Other versions
CN109019211A (en
Inventor
黄信文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen AITI Internet of things Holding Co.,Ltd.
Original Assignee
Shenzhen Aiti Internet Of Things Holding Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Aiti Internet Of Things Holding Co ltd filed Critical Shenzhen Aiti Internet Of Things Holding Co ltd
Priority to CN201810873593.0A priority Critical patent/CN109019211B/en
Publication of CN109019211A publication Critical patent/CN109019211A/en
Application granted granted Critical
Publication of CN109019211B publication Critical patent/CN109019211B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • B66B5/0025Devices monitoring the operating condition of the elevator system for maintenance or repair

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

The invention provides an elevator maintenance operation auxiliary device, comprising: an elevator specification acquisition module for acquiring the specification and basic information of an elevator device to be maintained; a maintenance record acquisition module for acquiring a maintenance information history of the elevator apparatus; the fault diagnosis module is used for carrying out fault analysis according to data acquired by a sensor arranged on the elevator device; the part management module is used for acquiring the replacement information of parts according to the fault information of the elevator device; the maintenance information storage module is used for recording and storing the maintenance information of the elevator device in the current maintenance operation; the maintenance date management module is used for setting the scheduled date and time information of the next maintenance operation of the elevator device; a management module for generating a maintenance planning task for the elevator installation. The device can ensure the reliable implementation of elevator maintenance operation and indirectly improve the reliability of the elevator.

Description

Elevator maintenance operation auxiliary device
Technical Field
The present invention relates to an elevator maintenance operation support device.
Background
In the past, in the inspection of an elevator, maintenance personnel perform maintenance detection on the elevator once a year according to a legal inspection time, and in actual operation, after the maintenance personnel maintain the elevator each time, maintenance information is recorded in a paper maintenance record sheet.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an elevator maintenance work assisting device.
The purpose of the invention is realized by adopting the following technical scheme:
provided is an elevator maintenance work support device, comprising:
an elevator specification acquisition module for acquiring the specification of an elevator device to be maintained and basic information, wherein the basic information includes information of components of the elevator device;
a maintenance record acquisition module for acquiring a maintenance information history of the elevator apparatus;
the fault diagnosis module is used for carrying out fault analysis according to data acquired by a sensor arranged on the elevator device, diagnosing the fault of the elevator device and acquiring corresponding fault information;
the part management module is used for acquiring the replacement information of parts according to the fault information of the elevator device and acquiring the replacement information of the parts according to the service time and the replacement cycle of the parts of the elevator device;
the maintenance information storage module is used for recording and storing the maintenance information of the elevator device in the current maintenance operation;
the maintenance date management module is used for setting the scheduled date and time information of the next maintenance operation of the elevator device;
and a management module including at least the component management module and a maintenance date management module, for associating replacement information of the component with a next maintenance operation date to generate a maintenance planning task of the elevator apparatus.
Preferably, the device further comprises a communication module for uploading maintenance information and maintenance planning tasks of the elevator device to a management server.
Preferably, the management module further includes a determination unit configured to determine whether or not the component needs to be replaced at the next maintenance operation based on the replacement information of the component and a scheduled date of the next maintenance operation, and associate the replacement information of the component information that needs to be replaced at the next maintenance operation with the next maintenance operation date.
Preferably, the sensor provided at the elevator arrangement comprises one or more of: the temperature sensor, the current sensor, the voltage sensor, set up the vibration sensor on the main shaft.
By acquiring the basic information of the elevator to be maintained and the maintenance information history record thereof, the maintenance personnel can preliminarily know the elevator to be maintained, and the maintenance personnel can determine the maintenance scheme; meanwhile, fault diagnosis is carried out on the elevator according to information acquired by a sensor arranged on the elevator, the running state and the situation of the elevator are judged, and operation and maintenance personnel can find the fault problem in the elevator to be maintained; acquiring the information of the parts related to the fault according to the acquired fault information, so that operation and maintenance personnel can determine specific part replacement information by taking the information as a reference; even if the elevator has no fault problem, the service life of the parts is continuously shortened in the using process, and the replacement cycle of the parts is judged according to the service time of the parts, so that operation and maintenance personnel can replace the parts by taking the replacement cycle as reference; the operation and maintenance personnel record the maintenance information of the current maintenance operation through the maintenance information storage module and record the maintenance information and the previous history record of the maintenance information in the management server together, so that the maintenance information can be conveniently consulted in the next maintenance; meanwhile, according to the set scheduled time of the next maintenance, the management module judges the part to be replaced in the next maintenance according to the replacement period of the part, associates the replacement information of the part with the time of the next maintenance, generates a maintenance schedule, and records the maintenance schedule in the management server, so that operation and maintenance personnel can conveniently prepare the part to be replaced in advance when executing a maintenance task; the elevator maintenance device can effectively assist operation and maintenance personnel in managing elevator maintenance operation information, improves the management accuracy and convenience, ensures reliable implementation of elevator maintenance operation, and indirectly improves the reliability of the elevator.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a frame structure diagram of the present invention.
Reference numerals:
elevator specification acquisition module 10, maintenance record acquisition module 20, failure diagnosis module 30, management module 40, component management module 41, maintenance date management module 42, maintenance information storage module 50, and communication module 60
Detailed Description
The invention is further described in connection with the following application scenarios.
Referring to fig. 1, there is shown an elevator maintenance work assisting device including:
an elevator specification acquisition module 10 for acquiring specifications of an elevator apparatus to be serviced and basic information including information on components of the elevator apparatus;
a maintenance record acquisition module 20 for acquiring a maintenance information history of the elevator apparatus;
the fault diagnosis module 30 is used for performing fault analysis according to data acquired by a sensor arranged on the elevator device, diagnosing the fault of the elevator device and acquiring corresponding fault information;
a component management module 41, configured to obtain replacement information of components according to the fault information of the elevator apparatus, and obtain replacement information of components according to a service time and a replacement cycle of the components of the elevator apparatus;
a maintenance information storage module 50 for recording and storing the maintenance information of the current maintenance operation of the elevator device;
a maintenance date management module 42 for setting the scheduled date and time information of the next maintenance operation of the elevator device;
and a management module 40 including at least the component management module 41 and the maintenance date management module 42, for associating the replacement information of the component with the next maintenance operation date to generate a maintenance scheduling task of the elevator apparatus.
Preferably, the basic information of the elevator apparatus further includes: elevator model, qualification number, use, date of delivery, manufacturer, service life, location, etc.
Preferably, the apparatus further comprises a communication module 60 for uploading maintenance information, maintenance planning tasks of the elevator apparatus to a management server.
Preferably, the management module 40 further includes a determination unit configured to determine whether or not the component needs to be replaced at the next maintenance time based on the replacement information of the component and the scheduled date of the next maintenance operation, and associate the replacement information of the component information that needs to be replaced at the next maintenance time with the date of the next maintenance operation.
Preferably, the sensor provided at the elevator arrangement comprises one or more of: a temperature sensor, a current sensor, a voltage sensor, a vibration sensor provided on the main shaft, and the like.
In the embodiment, by acquiring the basic information of the elevator to be maintained and the maintenance information history thereof, the operation and maintenance personnel can preliminarily know about the elevator to be maintained, and the operation and maintenance personnel can be helped to determine the maintenance scheme; meanwhile, fault diagnosis is carried out on the elevator according to information acquired by a sensor arranged on the elevator, the running state and the situation of the elevator are judged, and operation and maintenance personnel can find the fault problem in the elevator to be maintained; acquiring the information of the parts related to the fault according to the acquired fault information, so that operation and maintenance personnel can determine specific part replacement information by taking the information as a reference; even if the elevator has no fault problem, the service life of the parts is continuously shortened in the using process, and the replacement cycle of the parts is judged according to the service time of the parts, so that operation and maintenance personnel can replace the parts by taking the replacement cycle as reference; the operation and maintenance personnel record the maintenance information of the maintenance operation through the maintenance information storage module 50, and record the maintenance information and the previous history record of the maintenance information in the management server together, so that the maintenance information can be conveniently consulted in the next maintenance; meanwhile, according to the set scheduled time of the next maintenance, the management module 40 judges the component to be replaced in the next maintenance according to the replacement period of the component, associates the replacement information of the component with the time of the next maintenance, generates a maintenance schedule, and records the maintenance schedule in the management server, so that operation and maintenance personnel can conveniently prepare the component to be replaced in advance when performing a maintenance task; the elevator maintenance device can effectively assist operation and maintenance personnel in managing elevator maintenance operation information, improves the management accuracy and convenience, ensures reliable implementation of elevator maintenance operation, and indirectly improves the reliability of the elevator.
Preferably, the maintenance date management module 42 further includes:
1) acquiring an optimal maintenance period of the elevator device according to the maintenance information history record of the elevator device;
2) obtaining the scheduled date of the next maintenance operation according to the optimal maintenance period;
wherein the optimal maintenance cycle is obtained by satisfying the following function:
Figure BDA0001752736380000041
wherein F represents the optimal maintenance period of the elevator device, G (t) represents the comprehensive failure rate after the operation time t of the elevator device,
Figure BDA0001752736380000042
indicating the time required for maintenance of the elevator apparatus,
Figure BDA0001752736380000043
indicating the time required for maintenance of a malfunction in the case of a malfunction of the elevator apparatus,
Figure BDA0001752736380000044
the failure occurrence probability in the period time of F is shown, G (F) shows the average failure rate of the elevator device in the time period F; siRepresents the cost required for maintenance; sjIndicating the cost required for performing the maintenance of the fault by the occurrence of the fault in the preventive maintenance period, wherein SjIncluding the maintenance costs of a fault and the risk costs associated with a maintenance outage due to a fault, AF1、AF2And AF3Respectively, representing the set weight factors.
And adding the date of the current maintenance operation to the optimal maintenance period to obtain the scheduled date of the next maintenance operation.
In the above embodiment, the maintenance date management module 42 obtains the planned date of the next maintenance operation of the elevator device according to the above manner, firstly counts the failure probability of the elevator device, considers the time cost and the cost of the elevator maintenance at the same time, obtains the optimized elevator maintenance cycle after balancing various factors, and determines the planned time of the next maintenance operation according to the cycle, so as to optimize the cost problem of the elevator maintenance on the premise of ensuring that the failure rate of the elevator is reduced to the maximum extent, and provide guidance of the optimal scheme for maintenance personnel to maintain the elevator device.
Preferably, the component management module 41 acquires replacement information of the component according to a service time and a replacement cycle of the component of the elevator apparatus, and further includes:
1) acquiring the optimal replacement period of the part according to the part information of the elevator device;
2) acquiring the predicted replacement time of the parts according to the optimal replacement period of the parts;
3) and generating replacement information of the parts according to the predicted replacement time of the parts.
The determination unit determines whether or not the component needs to be replaced at the next maintenance based on the replacement information of the component and the scheduled date of the next maintenance operation, and further includes:
judging whether the predicted replacement time of the part is before the planned date range of the next maintenance operation of the elevator device, and if so, judging that the part needs to be replaced during the next maintenance;
wherein the optimum replacement cycle of the component is obtained by the following function:
Figure BDA0001752736380000045
in the formula, EmRepresents the optimum replacement period of the elevator installation parts m, N represents the total number of elevator installations using parts m,
Figure BDA0001752736380000051
indicates a significant level of
Figure BDA0001752736380000052
T distribution value of degree of freedom b-1, bmAnd dmRespectively representing fault intensity parameters of the parts m, and y represents the set unavoidable part fault probability;
wherein the fault intensity parameter is based on a fault intensity model g (t) ═ btdObtaining, wherein g (t) represents the total failure rate of the parts after the time t of operationB and d respectively represent fault intensity parameters, and the specific acquisition mode is as follows: carrying out fault test on the part m, collecting the total fault rate g (t) of the part m changing t along with time, substituting the corresponding time t 'and the total fault rate g (t') into the fault intensity model to obtain the optimal fault intensity parameter bmAnd dm,bnmRepresenting a fault strength parameter of a component m in an elevator installation n.
Because the elevator device needs to run for a long time and bears a large load, parts of the elevator device are easy to generate irreversible aging and abrasion under the long-time running, the stability and the performance of the elevator running can be influenced, the elevator can be seriously or even failed, and the parts of the elevator device need to be replaced regularly, so that the probability of the failure of the elevator caused by the aging of the parts is reduced.
In the above embodiment, the component management module 41 obtains the optimal replacement period of the component in the above manner, first performs a fault test, obtains the fault rate change of the component in the different types of elevators over time, thereby obtaining the fault intensity parameter, obtains the optimal replacement period of the component according to the fault intensity parameter, can obtain the optimal replacement period of the component under the condition of controlling the fault rate, reduces the replacement cost of the component, maximizes the benefit of the component, provides a basis for the maintenance personnel to replace the component during elevator maintenance, and improves the reliability of the elevator.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be analyzed by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (3)

1. An elevator maintenance operation auxiliary device, characterized by comprising:
an elevator specification acquisition module for acquiring the specification of an elevator device to be maintained and basic information, wherein the basic information includes information of components of the elevator device;
a maintenance record acquisition module for acquiring a maintenance information history of the elevator apparatus;
the fault diagnosis module is used for carrying out fault analysis according to data acquired by a sensor arranged on the elevator device, diagnosing the fault of the elevator device and acquiring corresponding fault information;
the part management module is used for acquiring the replacement information of parts according to the fault information of the elevator device and acquiring the replacement information of the parts according to the service time and the replacement cycle of the parts of the elevator device;
the maintenance information storage module is used for recording and storing the maintenance information of the elevator device in the current maintenance operation;
the maintenance date management module is used for setting the scheduled date and time information of the next maintenance operation of the elevator device;
a management module including at least the component management module and a maintenance date management module, for associating replacement information of the component with a next maintenance operation date to generate a maintenance planning task of the elevator apparatus;
the management module further comprises a judging unit for judging whether the part needs to be replaced at the next maintenance according to the replacement information of the part and the scheduled date of the next maintenance operation, and associating the replacement information of the part information which needs to be replaced at the next maintenance with the date of the next maintenance operation;
wherein, the maintenance date management module further comprises:
1) acquiring an optimal maintenance period of the elevator device according to the maintenance information history record of the elevator device;
2) obtaining the scheduled date of the next maintenance operation according to the optimal maintenance period;
wherein the optimal maintenance cycle is obtained by satisfying the following function:
Figure FDA0002619547140000011
wherein F represents the optimal maintenance period of the elevator device, G (t) represents the comprehensive failure rate after the operation time t of the elevator device,
Figure FDA0002619547140000012
indicating the time required for maintenance of the elevator apparatus,
Figure FDA0002619547140000013
indicating the time required for maintenance of a malfunction in the case of a malfunction of the elevator apparatus,
Figure FDA0002619547140000014
the failure occurrence probability in the period time of F is shown, G (F) shows the average failure rate of the elevator device in the time period F; siRepresents the cost required for maintenance; sjIndicating the cost required for performing the maintenance of the fault by the occurrence of the fault in the preventive maintenance period, wherein SjIncluding the maintenance costs of a fault and the risk costs associated with a maintenance outage due to a fault, AF1、AF2And AF3Respectively representing set weight factors;
the component management module acquires replacement information of components according to the service time and replacement cycle of the components of the elevator apparatus, and further includes:
1) acquiring the optimal replacement period of the part according to the part information of the elevator device;
2) acquiring the predicted replacement time of the parts according to the optimal replacement period of the parts;
3) generating replacement information of the parts according to the predicted replacement time of the parts;
the determination unit determines whether or not the component needs to be replaced at the next maintenance based on the replacement information of the component and the scheduled date of the next maintenance operation, and further includes:
judging whether the predicted replacement time of the part is before the planned date range of the next maintenance operation of the elevator device, and if so, judging that the part needs to be replaced during the next maintenance;
wherein the optimum replacement cycle of the component is obtained by the following function:
Figure FDA0002619547140000021
in the formula, EmRepresents the optimum replacement period of the elevator installation parts m, N represents the total number of elevator installations using parts m,
Figure FDA0002619547140000022
indicates a significant level of
Figure FDA0002619547140000023
T distribution value of degree of freedom b-1, bmAnd dmRespectively representing fault intensity parameters of the parts m, and y represents the set unavoidable part fault probability;
wherein the fault intensity parameter is based on a fault intensity model g (t) ═ btdAcquiring, wherein g (t) represents the total failure rate of the part after the time t is operated, b and d respectively represent failure intensity parameters, and the specific acquisition mode is as follows: carrying out fault test on the part m, collecting the total fault rate g (t) of the part m changing t along with time, substituting the corresponding time t 'and the total fault rate g (t') into the fault intensity model to obtain the optimal fault intensity parameter bmAnd dm,bnmRepresenting a fault strength parameter of a component m in an elevator installation n.
2. The elevator maintenance work assisting device according to claim 1, further comprising a communication module for uploading maintenance information and maintenance planning tasks of the elevator device to a management server.
3. An elevator maintenance work aid according to claim 1, characterized in that the sensors provided in the elevator arrangement comprise one or more of the following: the temperature sensor, the current sensor, the voltage sensor, set up the vibration sensor on the main shaft.
CN201810873593.0A 2018-08-02 2018-08-02 Elevator maintenance operation auxiliary device Active CN109019211B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810873593.0A CN109019211B (en) 2018-08-02 2018-08-02 Elevator maintenance operation auxiliary device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810873593.0A CN109019211B (en) 2018-08-02 2018-08-02 Elevator maintenance operation auxiliary device

Publications (2)

Publication Number Publication Date
CN109019211A CN109019211A (en) 2018-12-18
CN109019211B true CN109019211B (en) 2020-10-20

Family

ID=64648037

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810873593.0A Active CN109019211B (en) 2018-08-02 2018-08-02 Elevator maintenance operation auxiliary device

Country Status (1)

Country Link
CN (1) CN109019211B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020148804A1 (en) * 2019-01-15 2020-07-23 三菱電機株式会社 Maintenance plan generation device, maintenance plan generation method and maintenance plan generation program
CN112541596A (en) * 2019-09-04 2021-03-23 珠海格力电器股份有限公司 User relationship management method and system
CN110683442A (en) * 2019-09-19 2020-01-14 广州慧特安科技有限公司 Method, system and storage medium for processing elevator maintenance information
CN114766025A (en) * 2019-12-10 2022-07-19 大金工业株式会社 Maintenance support system
CN112758783A (en) * 2021-01-21 2021-05-07 上海电机学院 Elevator running state monitoring system based on internet of things
CN113344329A (en) * 2021-05-07 2021-09-03 上海三菱电梯有限公司 Maintenance plan generating system and method for single elevator, readable storage medium and computer equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1629867A (en) * 2003-12-19 2005-06-22 株式会社东芝 Maintenance support method, and maintenance support apparatus
CN1867932A (en) * 2003-10-17 2006-11-22 海德勒利夫特埃姆克莱德股份有限公司 Equipment component monitoring and replacement management system
CN106185507A (en) * 2015-03-10 2016-12-07 东芝电梯株式会社 Maintenance work auxiliary device, system and the method for elevator
CN106185520A (en) * 2015-03-10 2016-12-07 东芝电梯株式会社 Maintenance work auxiliary device, system and the method for elevator
CN106976777A (en) * 2017-04-07 2017-07-25 浙江梅轮电梯股份有限公司 One kind is used for elevator long distance fault monitoring system and its detection method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1867932A (en) * 2003-10-17 2006-11-22 海德勒利夫特埃姆克莱德股份有限公司 Equipment component monitoring and replacement management system
CN1629867A (en) * 2003-12-19 2005-06-22 株式会社东芝 Maintenance support method, and maintenance support apparatus
CN106185507A (en) * 2015-03-10 2016-12-07 东芝电梯株式会社 Maintenance work auxiliary device, system and the method for elevator
CN106185520A (en) * 2015-03-10 2016-12-07 东芝电梯株式会社 Maintenance work auxiliary device, system and the method for elevator
CN106976777A (en) * 2017-04-07 2017-07-25 浙江梅轮电梯股份有限公司 One kind is used for elevator long distance fault monitoring system and its detection method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
工程机械维护周期的多目标优化;舒国云;<工程机械维护周期的多目标优化>;20050531;第4-5章 *

Also Published As

Publication number Publication date
CN109019211A (en) 2018-12-18

Similar Documents

Publication Publication Date Title
CN109019211B (en) Elevator maintenance operation auxiliary device
JP2009251822A (en) Complex diagnosis maintenance plan supporting system and supporting method for same
US10837866B2 (en) Self-learning malfunction monitoring and early warning system
WO2018079778A1 (en) Production management device, method, and program
US20190004507A1 (en) Equipment management apparatus, equipment management system, computer readable medium, and equipment management method
FI122366B (en) Equipment and system for servicing the lift
CN101963937B (en) Predicting residual service life of flight control computer system
US20050096759A1 (en) Distributed power generation plant automated event assessment and mitigation plan determination process
JP4612699B2 (en) Monitoring / diagnosis device and remote monitoring / diagnosis system
US11221903B2 (en) Maintenance management system and maintenance management confirmation device used for the same
US20120330499A1 (en) Acoustic diagnostic of fielded turbine engines
JP2821149B2 (en) Plant life management device
US20120203704A1 (en) Servicing-timing selecting apparatus and servicing-timing selecting method
US20080272915A1 (en) Equipment monitoring system and method
CN110546624A (en) Production equipment on-line maintenance system and method thereof
BR102015000214A2 (en) remote diagnostic system
JP3742310B2 (en) Power generation equipment maintenance support system
US7636648B2 (en) Arrangement, method and computer program product for enhanced prognostics
JP2018185774A (en) Facility management apparatus, facility management system, program and facility management method
WO2010069318A1 (en) Wear-out pattern recognition
TW201821303A (en) Alarm system and alarm method
TWI380226B (en) System and method of prognostic analysis and resource planning for apparatu
CN114206760A (en) Elevator information display device and elevator information display method
KR101559343B1 (en) management analysis system for Condition Monitoring and facility history of Railway Vehicle
JP2002062934A (en) Facility inspection terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20200916

Address after: 1706-075, 17 / F, Guangyin building, 38 Futian South Road, port community, Futian street, Futian District, Shenzhen City, Guangdong Province

Applicant after: Shenzhen AITI Internet of things Holding Co.,Ltd.

Address before: 518000 Nanshan Street Xiangnan Road, Nanshan District, Shenzhen City, Guangdong Province, No. 129 Sagemingyuan

Applicant before: SHENZHEN XINHUIDA MACHINERY DESIGN Co.,Ltd.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant