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New all-electric power scraper cable system volume


Ceguo voltage protection circuit for components. Given circuit to provide 27V AC voltage from the transformer secondary side by the D × 4 bridge rectifier and filter-type filter, and then given by the regulator added across the resistor, and then remove the paper were given voltage and put the cable cable given voltage. Single-junction transistor trigger circuit trigger, this circuit is relatively simple, reliable and easy to adjust; temperature compensation is better, the temperature of small, phase scope is wide. 3.2 retractable cable and traffic synchronization (1) put forward cable synchronization. Scrapers move forward loop when connected, this time corresponding relay coil is energized in the middle of the pull, while the normally open relay contact closure, provides power for the clutch slip, slip away from the viewer, too ~ JI45V excitation voltage , in rolls of about 30N to give the anti-loose cable tension of cable when the cable to avoid the loose volume. (2) Back closing cable synchronization. Scrapers back loop when the relay coil connected to back the relay, scrapers back. At the same time normally closed contacts disconnect the cable winding power loss time delay relays, power supply coil is energized the corresponding pull contacts,[link widoczny dla zalogowanych], the controller provides power for the clutch. Slip clutch controller provides excitation voltage of 90V, making it work, that is synchronized to achieve backward roll cable. (3) Protection of cable terminal cable to prevent discharge due to the cable end and pull off the cable release, in the control system of putting in the protection of cable terminal. When the scraper forward to the end of cable, the limit switch action,[link widoczny dla zalogowanych], cut off the relay coil circuit in question, the main motor (walking) automatically stop running, loss of excitation voltage slip clutch, stop working, loss of brake power and brake drum . * (4) continuous jog synchronization. Slip away from the viewer, because there is a lag time work, short run time will appear to move the time to receive the cable phenomenon. Cable designed for this delay loop back volumes, when running the motor stops running, slip away from the viewer,[link widoczny dla zalogowanych], for 4 seconds to overcome to move the reel when not winding phenomenon, Mining Research and Development Section l8 of 26 volumes are can maintain the tension was still running the state when the cable (j) work properly working system for the LHD conversion after the closing before the release,[link widoczny dla zalogowanych], but in some cases, before the close after the release. For example, after the scraper work towards progress in the transport tunnel locomotive cable wiring within the Department, must move forward at this time to receive the cable, the addition of this control work system conversion circuit. Work system will be converted switch \4 Application of this electromagnetic slip clutch cable winding device 30 installed in DcY a small track on electric scraper. Jingmen gypsum mine in the next over a period of l0-month production test scraper operation, the cable winding system in normal operation,[link widoczny dla zalogowanych], retractable cable with ease. Electromagnetic slip clutch block against the paper roll and strong ability to stick the cable in operation intact, no loose paper roll or the phenomenon of chaos, even turning on the spot and often go forward and backward operations, winding the cable is still very normal. Scrapers in operation, the complex route, volume, ... ~ ~ ~ a ', i foreign exchanges and cooperation: one by one ~ a ~ √ around the slip clutch system often produces the phenomenon of blocking the volume or the inverse volume, But temperature is not high, still the normal range. General scraper continuously 4h, the actual temperature does not exceed 25 ~ C. In 1O-month test run. The clutch has good reliability, can adapt to the damp underground working environment. Electromagnetic slip clutch posed by the new all-electric cable winding system and its successful application on electric scraper. Winding the cable for the electric scraper body has added new features. Especially for small electric motor scraper, is undoubtedly a good choice. References 1 Shen Hong and so on. Electrical Engineering Manual (crucian carp). Beijing Mechanical Engineering leek Press, 198 282 Li Yao Qu. Small three-phase asynchronous motor manual. Beijing: Mechanical Industry out board community, 1987.63 He Zhengzhong. Use of Underground LHD and development of mining machinery, l987 (7) 4 in AERONAUTICS AND ASTRONAUTICS. When the small electric track scraper Mining Research and Development Study, l997 (2) Recently, Changsha Institute of Mining Research Institute of Marine mining \Marine Engineering Research Institute of songs invitation to invite her as a visiting scholar at the high song as the hub to South Korea to give lectures, which indicates that China's ocean mining in the international community had a funeral of a good song and music by the international community pay close attention to marine mining. Ocean mining by the Changsha Institute of Mining Research: Research Institute and Japan co-organized the departments concerned in the song at the second tick and Pipeline mining technology exchange Kui Diego, scheduled for April 1998 1O held in China. By then, Chinese and Japanese mining industry music experts, scholars gathered to exchange academic ideas, card into the common development. 'Lj:
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[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]