DY Elevator Maintenance Virtual Simulation Experiment Platform

Release time：2024-07-07 11:30viewed：times

1. Management subsystem

The management subsystem consists of user management, major management, teacher management, class management and student management. The functions are as follows:
(1) User management: system user name, account, password and permission definition;
(2) Major management: including major name, usage status and other information;
(3) Class management: including class name, class description, major, etc.;
(4) Teacher management: m*nly including user name, name, gender, telephone number, em*l address and major, etc.;
(5) Student (candidate) management: student (candidate) name, account, password, class, etc., receiving exam or practice tasks.

2. Teaching subsystem
The teaching subsystem consists of functional modules such as teaching resource library, my courseware folder, learning task release, learning situation analysis, and student end. Its features are as follows:
(1) The management platform’s built-in 3D virtual simulation teaching resource library, which consists of 3D animation teaching resource packages and 3D virtual tr*ning resource packages for each course, is constructed according to projects, tasks, knowledge and skills points, etc. Teachers can also customize and upload other courseware resources that need to be shared, such as: electronic teaching plans, PPT, teaching videos, pictures, documents, etc.;
(2) Teachers can customize courseware folders with their own characteristics according to teaching requirements. Courseware folders can choose the 3D virtual simulation resources that come with the platform, or they can customize and upload other courseware resources, such as: PPT, videos, etc., for classroom teaching;
(3) Teachers can selectively release learning or tr*ning tasks according to the teaching progress for students to learn during or after class;
(4) The teacher end can query students’ online, login, learning time, practice scores, etc.

3. Assessment Subsystem
(1) Question Bank Management:
Question bank management m*nly includes question bank classification management and question bank content management:
Question bank classification management: supports customization. For assessment items of different majors, classification settings can be made according to question type (such as single-choice questions, multiple-choice questions, true or false questions, etc.) or question content attributes; Question
bank content management: Questions can be edited by category, including number, content, question type, category, answer and other information, and supports the import of customized and standard questions.
(2) Examination Management:
Examination management includes paper composition management and assessment management modules;
Paper composition management: includes definition functions such as examination class, invigilator, examination time, and paper composition; Paper composition rules can be customized, and both manual and automatic paper composition methods are supported;
Assessment Management: m*nly manages the assessment process and results; includes two major functions: the invigilator end and the student (candidate) end; the invigilator end can review the candidate's identity online, set and monitor the candidate's status, manage the assessment results, etc. The student (candidate) end can answer questions online after logging in.
(3) Practice management:
Students can conduct many functions online, including self-test exercises, organizing unified examinations, conducting knowledge competitions, assigning extracurricular or holiday homework, intelligent test composition, answer sheet review and grade management;
(4) Student (candidate) side:
The student (candidate) side module provides students with the ability to take mock exams, formal exams, complete homework and practice on the computer.
Virtual simulation teaching system
Mechanical tr*ning safety education virtual simulation software: This software is developed based on unity3d. The software adopts the form of three-dimensional roaming. The movement can be controlled by the keyboard and the direction of the camera can be controlled by the mouse. There are mechanical safety distance experiments, mechanical safety protection device experiments, and basic assessments of mechanical safety protection design. During the experiment, the three-dimensional roaming screen uses arrows and footprints to prompt movement to the experimental position. The circle around the mechanical object shows the working radius. The experimental process is accompanied by a dialog box reminder of the three-dimensional robot.
A. The content of the mechanical safety distance experiment includes the safety distance experiment to prevent the upper and lower limbs from touching the dangerous area (with two types of fence height and opening size). After entering, the GB23821-2009 "Safety distance to prevent the upper and lower limbs from touching the dangerous area" requirement pops up in front of the camera. Wrong demonstration: the experiment process is that after the human body enters the working radius of the mechanical object and is injured, the bloody picture and voice reminder receive mechanical injury, and return to the original position and conduct the next experiment. The last step is the correct approach.
B. The mechanical safety protection device experiment is divided into safety interlock switch, safety light curt*n, safety mat, safety laser scanner and other protection device experiments. The optional categories (safety input, safety control, safety output, other), manufacturer, product list (safety interlock switch, safety light curt*n, safety mat, safety laser scanner, safety controller, safety relay, safety fence). There is a blue flashing frame reminder at the installation location. The experimental process: select the safety fence and install it, select the safety interlock switch (or select the safety light curt*n, safety mat, safety laser scanner) and install it, select the safety controller and install it to the electrical control box, select the safety relay and install it to the electrical control box, and click the start button on the electrical control box. If entering a dangerous area, the system will sound an alarm and the mechanical object will stop working. You can stop by pressing the reset button on the electrical control box.
C. The basic assessment of mechanical safety protection design requires the installation of the mechanical safety system to be completed, and the safety guardr*l, safety interlock switch, safety light curt*n, safety mat, safety laser scanner, safety controller, safety relay, 24V power supply, signal light and emergency stop button to be correctly installed. The assessment is divided into ten assessment points. Some assessment points have three options, which students can choose freely. After the final 10 assessment points are selected, submit for confirmation, and the system will automatically derive the total score and the score of each assessment point.
D. The software must be on the same platform as a whole and must not be displayed as a separate resource.
E. At the same time, the VR installation package of this software is provided to customers to facilitate users to expand into VR experiments. VR equipment and software installation and debugging do not need to be provided.
Mechanical assembly and benchwork assembly virtual simulation software: This software is developed based on unity3d, with optional 6 levels of image quality. It has the design and virtual disassembly and assembly of reducers and shaft structures, design and simulation of common mechanical mechanisms , mechanism resource library, typical mechanical mechanisms (virtual disassembly and assembly of gasoline engines). The software is an integrated software and cannot be a separate resource.
A. Reducer design and virtual disassembly and assembly interface can choose worm gear bevel gear reducer, two-stage expanded cylindrical gear reducer, bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, and one-stage cylindrical gear reducer.
Worm bevel gear reducer: After entering the software, the assembly content will be automatically played, and each step in the video will be described in text.
Secondary unfolded cylindrical gear reducer: After entering the software, the content will be played in the form of video. The video content should include: part name (scan the QR code to see the part name), disassembly demonstration (including disassembly, assembly), virtual disassembly (including the whole, low-speed shaft, medium-speed shaft, high-speed shaft, box cover, box seat)
Bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, first-level cylindrical gear reducer: click to enter and automatically jump to the edrawings interface. The models are all three-dimensional models . By clicking on the parts to display the part name, you can rotate 360° in all directions, zoom in, zoom out, and translate. At the same time, you can use the move parts function to disassemble and assemble the entire reducer. At the same time, you can select the home button to return to the original state of the reducer. The bevel gear reducer and the first-level cylindrical gear reducer have added the function of inserting cross sections, and the cross sections can be freely dragged to observe the internal structure of the reducer.
B. The design of the shaft system structure and the virtual disassembly and assembly interface can select part recognition, disassembly and assembly demonstration, and actual combat operation.
1. Part recognition: The built-in 3D models and part names of helical gears, end caps without holes, couplings, coupling keys, shafts, gear keys, end caps with holes, sleeves, and deep groove ball bearings are set. Any part can be rotated 360°.
2. Disassembly and assembly demonstration: There are 2 built-in cases. When the mouse is moved to a cert*n part position (except the base and the bearing seat), the part is automatically enlarged and the part name is displayed. There are disassembly and assembly buttons. The software automatically completes the disassembly and assembly of the shaft system structure. The 3D scenes can be rotated 360°, enlarged, reduced, and translated.
3. Actual operation: The 3D parts are neatly placed on the desktop. Students manually select the corresponding parts and move them to the shaft system structure. The parts can be installed only when the placement order and position are correct. There is a restart button to facilitate students to repeat the virtual experiment. When the mouse is moved to a cert*n part position (except the base and the bearing seat), the part is automatically enlarged and the part name is displayed.
C. Common mechanical mechanism design and simulation: optional hinged four-bar mechanism design and analysis, I\II type crank rocker mechanism design and analysis, offset crank slider mechanism design and analysis, crank swing guide rod mechanism design and analysis, hinged four-bar mechanism trajectory synthesis, eccentric linear roller push rod cam , concentric linear flat push rod cam .
1. Each mechanism should be able to input corresponding parameters, and the software can automatically calculate the parameters, and can perform motion simulation and automatically draw curves.
D. The mechanism resource library can choose 11 types of planar connecting rod mechanisms, 5 types of cam mechanisms, 6 types of gear mechanisms, 8 types of transmission mechanisms, 11 types of tightening mechanisms, 6 types of gear tr*n mechanisms, and 8 types of other mechanisms (mechanical equipment simulation).
E. Virtual disassembly and assembly of gasoline engines can choose crankcase assembly and disassembly demonstration, crankcase virtual assembly, valve system assembly and disassembly demonstration, and valve system virtual assembly.
1. The crankcase assembly and disassembly demonstration and the valve system assembly and disassembly demonstration are equipped with disassembly buttons, assembly buttons, restart buttons, and decomposition observation buttons. When the mouse moves to a cert*n part position, the part is automatically enlarged and the part name is displayed. The function is automatically completed by the software to disassemble and assemble the shaft system structure. When the decomposition observation button is used, the three-dimensional model of the crankcase or valve system automatically displays an exploded view, which can be rotated 360° in all directions, enlarged, reduced, and translated.
2. The three-dimensional parts of the crankcase virtual assembly and the valve system virtual assembly are neatly placed on the desktop. Students manually select the corresponding parts and move them to the mechanism. The parts can only be installed when the placement order is correct and the position is correct. There is a restart button to facilitate students to re-conduct virtual experiments. When you move the mouse to cert*n parts, the part name will be automatically displayed.

4. Personal Learning Center
After logging in, students can receive and learn online the tasks assigned by teachers. Students can learn virtual simulation courses, interactive forums, practical tr*ning courses, assessments, rankings, etc. in the personal learning center; the

student personal learning center has modules such as learning tasks, learning status, interactive forums, test papers, homework books, and exercises.
(1) Learning tasks:
Students receive learning tasks issued by teachers and learn by selecting each task module in the learning tasks;
(2) Learning status:
You can view the content, learning time, learning duration and score det*ls of students;
(3) Interactive forum:
Let learners communicate with each other and answer questions in the simplest way;
(4) Test papers, homework books, and exercises:
Students receive tests issued by teachers or answer practice homework.

5. Cloud Platform
The cloud education platform includes modules such as experience courses, essence courses and information release. Experience courses are for visitors to watch and experience resource courses; essence courses include all 3D practical simulation questions, and users can browse and learn resources according to the divided resource permissions; the information release module releases industry trends, laws and regulations, and professional information every day.
(1) The homepage includes popular course rankings (sorted by the number of collections), course rankings (sorted by the number of views), free experience area, course essence area and information release.
(2) In the course ranking area, you can directly click on the course name to browse course resources. (3
) In the free experience area, you can directly click on the course image to enter the course viewing page.
(4) In the course essence area, after logging in, you can directly click on the course image to enter the course viewing page.
(5) The course module allows users to enter the course viewing page. During the viewing process, the system will automatically record the user's viewing time, end viewing time and duration. Users can view their browsing history in the "Playback Record" module; at the same time, users can collect courses, and then the course will appear in the "My Collection" column, and users can conveniently browse their favorite courses. In the common toolbar, click "My Site" to view the playback records and favorite courses.
(6) The information release module will play **news information in a carousel to help users view the required information more quickly.

PC version

Resource Category	project		Task	Content introduction (knowledge and skills points)
3D Tutorial Resource Package		Elevator m*ntenance workflow	1. Four elements of elevator m*ntenance		Master the mn tasks of elevator mntenance: cleaning, parts replacement and rep*r, lubrication, adjustment,
			2. Elevator m*ntenance workflow		Mntenance workflow: formulate mntenance plan and inform customers; carry out mntenance inspection according to plan; place warning signs on the first floor to inform users that mntenance is in progress; perform mntenance according to mntenance content and keep records; after the work is completed, conduct an operation inspection to confirm that the elevator is working properly; remove the warning signs and put the elevator into operation; the m*ntenance form is signed and confirmed by the user;
		Elevator m*ntenance plan	Elevator m*ntenance plan		Preparation of elevator mntenance plan: Preparation of mntenance plan (half-monthly/quarterly/half-yearly/annual) and mntenance contents in different periods; Form and content of "Mntenance Record Form"; Filling in the form; When checking and replacing parts, it is necessary to confirm with the customer;
		Safety operating procedures for elevator m*ntenance	1. Basic safety operation methods for elevator m*ntenance-entering the car top procedure		Determine the order of entering the car roof Specific operations for safe operation on the car roof
			2. Basic safety operation methods for m*ntenance-procedure for evacuating the car top		Determine the order of evacuating the car roof Specific operations for safe evacuation of the car roof
			3. Basic safety operation methods for m*ntenance-entering the pit procedure		Determine the order of entering the pit and enter the pit for safe operation.
			4. Basic safety operation methods for elevator m*ntenance--pit evacuation procedures		Determine the order of evacuating the pit Specific operations for safe evacuation of the pit
		Computer room m*ntenance items	1. Computer room m*ntenance - check the computer room environment		Check whether there is any debris on the floor of the computer room, check the ventilation of the computer room, check the lighting of the computer room, the indoor temperature, and whether there is any abnormal sound when the machine is running.
			2. Machine room m*ntenance - check control cabinets and electrical boxes		Cleanliness of the control cabinet power cord, fault records of the control cabinet, indicator light status, firmness of wiring (connectors), etc.
			3. Machine room m*ntenance - check the traction machine		Check the tightening of the traction machine bolts, check the cleanliness and oil leakage of the traction machine and traction wheel grooves Check the encoder wiring and fixing
			4. Engine room m*ntenance - check the brakes		Check the flexibility of the brake, whether the adjustment bolts are loose, whether the shaft pins are lubricated, whether the electromagnet is heated or stuck, and whether the brake shoe lining is worn.
			5. Machine room m*ntenance - check the speed limiter		Check the lubrication of the speed limiter pin, the cleanliness of the speed limiter surface, the wear of the rope groove, and the reliability of the overspeed switch action.
		Well m*ntenance project	1. Well m*ntenance – Well environment inspection		Check shaft hygiene, shaft lighting, cable ducts, etc.
			2. Hoistway mntenance - check the guide rls		Check and clean the guide rl bracket, tighten the guide rl bracket bolts, tighten the guide rl pressure plate bolts, check the guide rl surface wear and connection conditions, check the oil level in the oil filling box, etc.
			3. Well m*ntenance – Well switch		Clean the switch surface, check the switch screws for tightness and deformation, check the wear of the switch wheel, wipe the stroke, etc.
			4. Well m*ntenance - check the level and floor sensor devices		Clean the sensor to ensure good contact of the plug, check whether the magnetic isolation plate is rusted or deformed, and measure the distance between the magnetic isolation plate and the leveling switch.
			5. Well m*ntenance – Check the wire rope		Check the tightness of the wire rope, the condition of the cotter pin, the tension of the wire rope, the wear of the wire rope, etc.
			6. Well mntenance - check the compensation chn		Check whether the ch*n is damaged or cracked, the fixing condition, and the distance from the ground
			7. Well m*ntenance - check the accompanying cable		Check whether the accompanying cable is damaged, whether there is any obstruction during operation, whether it is fixed, and the distance from the ground.
		Pit m*ntenance items	1. Pit m*ntenance items – pit environment inspection		Check for water seepage, clean up dirt, check pit lighting, check safety switches, check the fixing of counterweight guardr*ls
			2. Pit m*ntenance items - check the buffer		Check the buffer's fixation and oil level, take dust-proof measures for the buffer, and perform buffer reset tests regularly.
			3. Pit m*ntenance items - check the tensioning device		Check the fixing condition of the tensioning device, check whether the distance between the tensioning wheel and the ground meets the requirements, check the tensioning wheel rope break switch, the wear of the tensioning wheel, etc.
		Floor station m*ntenance items	1. M*ntenance items at the landing station - Check the call box		Check if the call box button, display and base station electric lock are normal
			2. M*ntenance items at landing stations - Check landing doors		Clean the door sill and doorway Check the wear of the door slider and door wheel, and the tightness of the screws Check the door self-closing device Check the door lock contact and engagement length
		Car and counterweight m*ntenance items	1. M*ntenance items for car and counterweight - check inside the car		Check the cleanliness, lighting, fans, and emergency lighting in the car Check the alarm device and intercom system Check the m*ntenance switch and emergency stop switch in the car Check the display and command buttons in the car
			2. M*ntenance items for car and counterweight---check the car top		Check the cleanliness of the car top, check the oil level in the oil box and the wear of the guide shoes, check the fastening of the speed limiter wire rope clamp, check the m*ntenance switch and emergency stop switch, and check the lighting
			3. M*ntenance items for car and counterweight - check car door and door machine		Clean the door r*ls and sills, open and close the car door Check the door machine fixation and belt tension Check the door knife size Check the car door safety device Check the door hanging wheel wear Check the door lock contacts, etc.
			4. M*ntenance items for car and counterweight - check the car bottom		Check the tightness of the safety clamp and the clearance between the clamp and the guide r*l. Check the wear of the lower guide shoe. Check the tightness and clearance of the weighing device.
			5. M*ntenance items for car and counterweight - check the counterweight		Check the counterweight block and pressure plate, check the tightness of the counterweight rope head, check the wear of the guide shoe, and check the oil level in the oil box.
		M*n inspection items	1. Check and adjust the engagement condition of the hall door lock		Check whether the engagement distance between the hall door lock hook and the electrical contact is more than 7mm and the compression stroke of the contact. If it does not meet the standard requirements, adjust it.
			2. Manual turning operation instructions and steps		Introducing two ways of turning the hand wheel and the key points of turning the hand wheel
			3. Procedures for rescuing trapped passengers		Procedures and steps for rescuing trapped passengers
			4. M*ntenance operation		Correct operation method for m*ntenance operation
			5. Check the wear of the traction sheave rope groove		Traction sheave structure model, sheave groove shape and size requirements; rope groove wear inspection and judgment
			6. Wire rope tension adjustment		How to check the wire rope tension How to adjust the tension
			7. Check and adjust the guide shoe clearance		Requirements for the clearance between different types of guide shoes and guide rls Methods for checking the clearance between guide shoes and guide rls
			8. Inspection and adjustment of brake holding clearance		Preparation before inspection Check brake clearance Adjust brake clearance
			9. Inspection and verification of shaft protection switch		In the car top inspection mode (down), verify the limit switch and limit switch function in the shaft
			10. Car leveling accuracy		Check the leveling accuracy of the wiring on each floor. Adjustment method
3D virtual tr*ning resources		1. Elevator m*ntenance work flow	1. Elevator m*ntenance workflow	1. Understand the four elements of mntenance (overhaul and renovation are not included) 2. Understand the process of mntenance work 3. Based on an animation, determine whether the four elements are met 4. Based on an animation, determine whether the process is met
		2. Elevator m*ntenance plan	1. Elevator m*ntenance plan	1. The number of personnel participating in the mntenance (at least two people) 2. Understand the mntenance time (half-month, quarterly, half-year, yearly) 3. Determine whether the mntenance form is filled out in accordance with the standard according to the mntenance form 4. Determine whether the mntenance content complies with the half-month (quarterly) inspection according to the mntenance form (m*ntenance items are missed)
			2. Requirements for filling out	1. Fill in (select) the mntenance form according to the scenario and auxiliary library information 2. Sign the mntenance form (mntenance personnel, customer) 3. Provide a scene animation of replacing parts and confirm the information on the mntenance form 4. Confirm whether the given item is a half-monthly warranty or a quarterly warranty
		3. Safety operating procedures for elevator m*ntenance	1. Basic safety operation methods for elevator m*ntenance-entering the car top procedure	1. Determine the order of entering the car roof 2. Specific operations for safe operation on the car roof
			2. Basic safety operation methods for elevator m*ntenance-procedure for evacuating the car top	1. Determine the order of evacuating the car roof 2. Specific operations for safe evacuation of the car roof
			3. Basic safety operation methods for elevator m*ntenance--procedure for entering the pit	1. Determine the order of entering the pit 2. Specific procedures for safe operation when entering the pit
			4. Basic safety operation methods for elevator m*ntenance--pit evacuation procedures	1. Determine the order of evacuating the pit 2. Specific operations for safe evacuation of the pit
			5. Work content and process of elevator m*ntenance-basic safety requirements	1. Labor protection supplies 2. Determination of the number of people participating in mntenance 3. Tools required for mntenance 4. Requirements for high-altitude operations 5. Requirements for pit operations
			6. Work content and process of elevator m*ntenance-operation requirements	1. Requirements for cleaning the wire rope 2. Requirements for working with rotating parts 3. Requirements for checking on the car roof 4. Requirements for working on the car roof and in the pit at the same time
		4. Computer room m*ntenance project	1. Computer room m*ntenance--computer room environment inspection	1. Understand the m*ntenance of the computer room environment 2. Specific operations of computer room environment inspection (specific operations using tools)
			2. Machine room m*ntenance--inspection of power boxes and control cabinets	1. Understand the inspection contents of the power box and control cabinet in the computer room 2. Specific inspection operations of the power box and control cabinet in the computer room (check contactor contacts, indicator light status, wiring, etc.)
			3. Machine room m*ntenance--traction machine inspection	1. Understand the inspection contents of the traction machine 2. Check the tightness of the traction machine base 3. Check the gear box 4. Check the lubrication 5. Check the wear of the traction sheave rope groove
			4. Engine room m*ntenance--brake inspection	1. Check whether the brake is flexible, reliable, and whether the adjustment screw is loose. 2. Lubricate the brake pin . 3. Check whether the electromagnet is stuck and the brake coil wiring is not loose. 4. Check the wear of the brake shoe lining.
			5. Machine room m*ntenance--speed limiter inspection	1. Check the wear of the wire rope groove of the speed limiter 2. Lubrication of the shaft and pin 3. Check the tightness of the wiring terminals and the action of the contacts 4. Verify the reliability of the overspeed switch action
		5. Well m*ntenance items	1. Well m*ntenance--well environment inspection	1. Check the sanitation of the shaft 2. Check the shaft lighting 3. Check the cable duct
			2. Well mntenance--Guide rl inspection	1. Determine where the mntenance personnel will stand to inspect the guide rls 2. Check the tightness of the guide rl brackets 3. Check the tightness of the guide rl connecting plates 4. Check the wear of the guide rl surface 5. Lubrication of the guide rls (oil level in the oil box)
			3. Well m*ntenance--Inspection of well switch	1. Determine which switches to check 2. Clean the switches (do not use a metal brush) 3. Check the fixation of the switches 4. Check the wear of the rubber surface of the switch wheel 5. Check the travel of the wheel and the wear of the contacts
			4. Well m*ntenance - check the leveling and floor sensor devices	1. Determine where the m*ntenance personnel will stand to check the magnetic shield (car roof) 2. Check the magnetic shield (rust, deformation, looseness) 3. Check the size between the sensor and the magnetic shield (2 sizes)
			5. Well m*ntenance--check the traction wire rope	1. Lubricate the wire rope (select lubricant) 2. Determine the position to adjust the wire rope tension 3. Check the tightness of the rope head combination nut (called split pin) 4. Check the wear of the wire rope (where to check, broken wire, wear requirements)
			6. Well mntenance - inspection of compensation chn	1. Determine where the mntenance personnel should stand to check the compensation chn 2. Check the items of the compensation chn 3. Check the distance of the compensation chn from the ground
			7. Well m*ntenance--Inspection of accompanying cables	1. Determine where the m*ntenance personnel will stand to check the accompanying cables (on the top of the car) 2. Determine the inspection items (fixed bundling, damage, insulation, obstruction, etc.) 3. Check the distance between the accompanying cables and the ground
		6. Pit m*ntenance items	1. Pit m*ntenance--pit environment	1. Determine the safety protection measures for entering the pit 2. Pit environment inspection items (leakage, cleaning of dirt, special odors, lighting, etc.) 3. Check lighting and sockets 4. Check safety switches
			2. Pit m*ntenance-buffer	1. Check the buffer's fixing condition 2. Check the hydraulic buffer oil level (hydraulic oil) 3. Check the buffer switch 4. Check the buffer stroke
			3. Pit m*ntenance--tensioner	1. Check the fixing of the tensioning wheel (check the distance from the ground) 2. Check the tension of the tensioning wheel (when to replace it) 3. The wear of the rope groove (when to replace it) 4. Verify the tension switch
		7. Floor station m*ntenance items	1. Floor m*ntenance--check the call box	1. Check method and location 2. Determine whether the problem needs to be replaced 3. Check the operation of the base station electric lock
			2. Floor station m*ntenance--check the floor door	1. Clean the door sill and doorway 2. Check for worn parts (slides, door wheels) 3. Check the operation of the door opening mechanism 4. Check the operation of the forced door opening mechanism
		8. M*ntenance items for car and counterweight	1. Car and counterweight m*ntenance--check the car	1. Determine which equipment in the car must be turned on at all times (ventilation, lighting, emergency lighting) 2. Check the emergency stop switch and m*ntenance switch in the car 3. Check the alarm device and intercom device 4. Check the buttons on the car control box
			2. Car and counterweight m*ntenance--check the car top	1. Determine the inspection items on the car top 2. Check the car top safety switches (safety window switch, safety clamp switch, emergency stop button) 3. Check the car top inspection box and lighting conditions 4. Check the wear of the guide shoes and the oil level in the oil box (oil quality)
			3. M*ntenance of car and counterweight - check car door and door machine	1. Check items of car door and door machine 2. Check car door lock contact 3. Verify door proximity protection device 4. Check door opening force when the elevator is out of power or electrical system f*ls
			4. Car and counterweight m*ntenance--check the car bottom	1. Check the tightness of the safety clamp 2. Check the gap between the safety clamp block and the guide shoe (feeler gauge) 3. Check whether the lower guide shoe lining is worn and needs to be replaced 4. Check the fixing and gap of the weighing device
			5. M*ntenance of car and counterweight--check the counterweight	1. Check the counterweight items 2. Check the fastening of the counterweight 3. Installation of the wire rope head 4. Check the wear of the guide shoe and the oil level in the oil box
		IX.Mn inspection items for mntenance	1. Check and adjust the engagement condition of the hall door lock	1. Determine where the m*ntenance personnel are to check. 2. Check the engagement of the door lock contacts and the lock hooks at each floor. 3. Verify the floor door contacts.
			2. Manual turning operation instructions and steps	1. Determine which hand wheel it is in the given scenario (removable or non-removable) 2. The correct method of turning the wheel to rescue someone
			3. Procedures and steps for rescuing trapped passengers	Procedures and steps for rescuing trapped passengers Rescue step 1 Rescue step 2 Rescue step 3 Rescue step 4 Rescue step 5
			4. M*ntenance operation	1. Location for mntenance operations 2. Safety steps for entering the car roof 3. Mntenance status operations 4. Up and down button jog operations
			5. Check the wear of the traction sheave rope groove	1. Determine the wear of the traction sheave rope groove 2. Determine whether the traction sheave needs to be replaced in the given scenario
			6. Wire rope tension adjustment	1. Determine where the m*ntenance personnel will stand to check the wire rope tension 2. Measure the wire rope tension 3. Adjust the wire rope tension
			7. Check and adjust the guide shoe clearance	1. Determine where the m*ntenance personnel will stand to check the guide shoes 2. Check the guide shoe clearance step 3. Adjust the guide shoes
			8. Inspection and adjustment of brake holding clearance	1. Preparation before inspection 2. Checking the brake clearance 3. Adjusting the brake clearance
			9. Inspection and verification of shaft protection switch	1. Determine where the m*ntenance personnel will stand to check the limit switch 2. Check the operation of the limit switch
			10. Comprehensive Exercise 1	1. Give a mntenance form and indicate whether one of the inspection items is a bi-monthly inspection or a quarterly inspection . 2. Select the tools, gauges and instruments required for a specific mntenance item . 3. What should be done if the floor door cannot be closed during m*ntenance? 4. During insulation inspection, the insulation resistance of power and signal
			11. Comprehensive Exercise 2	1. Give the phenomenon found during m*ntenance (the brake electromagnet is heating up) 2. Determine the cause (the working stroke of the electromagnet is too small) 3. Deal with the problem (adjust the tension of the brake spring)
			12. Comprehensive Exercise 3	1. Give the phenomenon found during mntenance (the car shakes at a certn position when running) 2. Determine the cause (the guide shoe is worn or the wire rope tension is uneven) 3. Deal with the problem (check the guide shoe and replace it)

VR version
The content is as follows:
1. Safety operating procedures for elevator m*ntenance:
1) Basic safety operation methods for elevator m*ntenance--entering the car top procedure
2) Basic safety operation methods for elevator m*ntenance--evacuating the car top procedure
3) Basic safety operation methods for elevator m*ntenance--entering the pit procedure
4) Basic safety operation methods for elevator m*ntenance--evacuating the pit procedure
2. Machine room m*ntenance items
5) Machine room m*ntenance--machine room environment inspection
6) Machine room m*ntenance--power box and control cabinet inspection
7) Machine room m*ntenance--traction machine
inspection 8)
Machine room m*ntenance--brake inspection 9) Machine room m*ntenance--speed limiter inspection
3. Hoistway m*ntenance items
10) Hoistway m*ntenance--hoistway environment inspection
11) Hoistway m*ntenance--guide r*l inspection
12) Hoistway m*ntenance--hoistway switch inspection
13) Hoistway m*ntenance--leveling and floor sensor device inspection
14) Hoistway m*ntenance--traction wire rope inspection
15) Hoistway m*ntenance - check the compensation ch*n
16) Hoistway m*ntenance - check the accompanying cable
4. Pit and landing m*ntenance items
17) Pit m*ntenance - pit environment
18) Pit m*ntenance - buffer
19) Pit m*ntenance - tension pulley
20) Landing m*ntenance - check the call box
21) Landing m*ntenance - check the landing door
5. Car and counterweight m*ntenance items:
22) Car and counterweight m*ntenance - check the car
23) Car and counterweight m*ntenance - check the car top
24) Car and counterweight m*ntenance - check the car door and door machine
25) Car and counterweight m*ntenance - check the car bottom
26) Car and counterweight m*ntenance - check the counterweight
6. M*n m*ntenance inspection items
27) Check and adjust the engagement of the hall door lock
28) Manual turning operation instructions and steps
29) Procedures and steps for rescuing trapped passengers
30) M*ntenance operation
31) Inspection of traction sheave rope groove wear
32) Wire rope tension adjustment
33) Check and adjust the guide shoe clearance
34) Check and adjust the brake clearance
35) Check and verify the shaft protection switch
Note: The det*led knowledge and skills of the above resources are the same as the PC version 3D virtual tr*ning resource package

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