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XK-QZJN1 bridge crane virtual simulation practice and appraisal system
1 System overview
XK-QZJN1 type bridge crane virtual simulation practice and examine system is made on the basis of line simulation design of 20/5T bridge crane electric control. It uses true cab and operation floor as the simulating operation trainer of bridge crane and makes the trainee feeling like operating at true crane when he operates at the trainer operating floor. So that they can get similar experiences as true machine working at this environment.
Simulation cab is true cab, including a set of whole operation floor, with all kinds of operating grips, buttons, instruments, indicters, stereo and pilot set, etc. In the cab, you can see visual images and operating situation playing on the screen putting in by high-performance projector, and also you can get all kinds of locale-sound as practical working from the audio system. This system uses true control room for controlling bridge crane in the microcomputer. The bridge crane simulator being made of high technology centering on computer simulation and computer 3D (three-dimensional) imaging can simulate the running environment and operating effect of bridge crane. It also equips with true circuit, cam controller and master controller. It also sets 15 reference fault points for fault checking.
Comparing to real machine, the simulating operation trainer has higher cost performance and is very convenient. It can conveniently simulate the emergency incident seldom happening in practical training. So it can train trainee to form exact judgment and good psychological diathesis and to have the ability to dispose emergency. We can get that simulation-training has non-fungible advantage comparing to real training. Of course simulation-training can’t completely instead of practical operation-training. But after the simulating operation-training, the trainee has certain operation experience and skill, and they can fast master practical operating skill when they practice real crane in the construction plant.
2 System characteristic
1) Good safety. It can put an end to training accidents to happen, and reduce the loss of training.
2) Good effect. Applying computer simulating software, you can process comprehensive training of all kinds of special working condition and accident handling.
3) Good economic benefit. Simulating trainer has lower energy consumption and has no influence to normal production, can easily reduce the training expense.
4) Powerful function. By maintenance and extension to simulation software and hardware, the system can adapt to ever-accelerated training requirements of crane machinery. And a tractor serves several purposes. By this simulating system we can process operating training of various types.
3 system function
1) It has an intact crane driving operation system that can process all kinds of operations on each organization of crane so that it can finish the handing operation safely, efficiently and high quality in the future.
2) Crane simulation system using dynamical model and virtual reality technology can get all kinds of true feeling as machinery starting, running and braking.
3) By advanced graph modeling platform and through progressive multimedia technology and image processing technology, we can process the modeling of true scene and motion model, and can also imitate working status of crane in all kinds of conditions.
4) Offering operation condition training of different contents and difficulties to enforce comprehensive training to operating people.
5) Teachers can record students’ operation status at real time through teacher-control platform. They can also change the setting of environment, adjust the content and difficulty of training at any time, and they can freeze-frame the scene for real-time comment on and appraise when necessary.
6) Teachers can record students’ operation status of virtual crane at any time through teacher-control platform and can replay so as to comment on and appraise to improve students’ operating skills.
7) Appraisal content possesses expandability can teachers can adjust software and speed part according to control panel supplied by software to improve students’ and adaptability and operation degree of crane.
8) Electrical section and computer is interactive. Meanwhile software equipped with a specialized electrical module interacts with hardware so that we can not only observe running condition from hardware, but also observe changes of circuit from displayer when we open electrical fault system to operate cam controller.
9) Appraisal software system can realize the instruction for operation mistakes and can carry out grading and printing score reporting according to students’ operation steps, quality, recovery processing and teachers’ comprehensive impression to the student
10) Specific item example of electrical fault diagnosis
1) Motor phase loss running
2) No power to main power
3) Cannot open main lifting braker
4) Main lifting is too slow
5) Cart out of work
6) Cart motor can only run one-way
7) Over current delay short-circuit
8) AC contactor cannot be self-locking
9) AC contactor cannot be inter-locking
10) AC contactor cannot be interlocking
11) Dolly out of work
12) Auxiliary hoist tripping when running
13) Auxiliary hoist without 1 grade
14) Auxiliary hoist running one-way
15) Position switch can not be limit protection
4 parameters
1 Input power: AC380V±5 %( three-phase five-wire) 50Hz
2 Rated current: 20A
3 Device weight: 1000kg
Relative temperature: -5°C~40°C
