Technical description: Large iron and steel, mining, chemical, food and other enterprises, extensive use of dust transmission equipment, transmission equipment produced in the work, especially the work produced by the reciprocating movement of a large number of transmission dust caused serious pollution, is not conducive to staff health. Currently, in order to control this dust dust source, generally rigid airtight cover or dust crew onboard. Full travel range rigid airtight way to transfer equipment dust cover point in traveling within the sealed up, and a lot of ventilation, so that a negative pressure to prevent the escape of dust inside the hood. Its disadvantage is the need air volume, the device is within the dusty sealed cover, engine wear, high failure rate; small space inside the cover, not easy routine maintenance and repair. The crew onboard dust way less than that: the need to increase the use of dust collecting unit process equipment racks and traveling agencies, increased investment in equipment costs; not easy to daily management, covers a large impact on production.

　　This technique is to provide a dust collecting apparatus for a transmission apparatus, dust can easily achieve stable transmission apparatus. To achieve the above purpose, the utility model including dust cover, exhaust fan, dust collector, set the ventilation slots along the movement track laying transmission equipment, wind activity vehicle, with the dust cover connecting tube, used to adjust the transmission equipment and activities car balancer between contact, setting and transmission equipment movement to move parallel to the rail tracks on the ventilation slots, activity vehicle placed on a mobile track, ventilation slots and filter through a pipe connected to one end of the connecting duct balancer, and the other end connected to the activities car .

　　Moreover, the ventilation slots upper opening, sealing tape covering the opening in the ventilation slots tape fixed at both ends. Also, the activities of the car, including chassis, sliding along the track to move the wheel to move the dust-laden gas into the ventilation slots of the wind bend, control fork, fork and transfer activity vehicle location device is connected, the wind bends connect one end of the balancer, and the other end into the opening of the ventilation slots. Moreover, the active drive unit is provided corrective tape, the guide roller, the tape is placed on both side frames corrective device, the distribution of the guide roller frame in the active configuration of the contour of the vehicle, the active seal at the vehicle tape through the tape guide rollers and guide corrective device inside the car to cover the event. Set the upper longitudinal ventilation slots supporting bar. With tape sealing the ventilation slots and activity vehicle structure, activities, car transport device according to activity and movement along the ventilation slots in between the ventilation slots and dust form the corresponding vent hood, dust outside the work site is full seal vents . Thus, the dust generated in the transmitting device work can be instantly pulled out of treatment, can adapt to different orbits, and required a small amount of wind, dust, high efficiency, easy to implement, low cost.