| 摘要 |
FIELD: transportation.SUBSTANCE: machine comprises a rope, mechanically connected to a motor block, comprising a DC motor adapted for operation in the range of operating rotation frequencies and for development of substantially permanent torque when working with varying rotation frequencies in the entire range. The machine also comprises a device of AC motor control made as capable of AC to DC conversion and transmitting DC to the motor, and a device of rotation frequency control, communicating with the motor block and made as capable of variation of the operating rotation frequency of the motor in the range of operating rotation frequencies. According to another version, the machine comprises a frame unit connected to a body for rotation of the body, having an opening in the front part and a rope, a part of which is coiled inside the body, and its actuating end is made as capable of insertion into a drain via the opening in the body. The machine also comprises an electric motor installed on the frame unit, the output shaft of which is mechanically connected to the body for rotation of the body and the rope. At the same time the motor may operate in the range of operating rotation frequencies, containing the first and second rotation frequencies, besides, the value of the torque developed by the motor in process of operation at the first frequency of rotation is equal to the torque during operation at the second rotation frequency. According to the third version of design, the machine comprises a frame unit, having several lengthy tubular elements made of the first and second lower support elements. At the same time the second support element comprises a lengthy tubular element, and both support elements are parallel to each other in the horizontal plane. The frame unit also comprises angular and vertical loop elements stretching between the first and the second support elements, a vertical adjusting plate with a hole and an upper support element with a fixed end, attached to the vertical loop element and a free end aligned in parallel to the horizontal plane. The machine also comprises a rope inserted into a drain, a rotary drum, with at least a part of a rope arranged in it, besides, the rope and the drum rotate simultaneously, a DC motor made as capable of operation at multiple various operating rotation frequencies and adapted for development of a permanent torque in process of operation at each of multiple separate operating frequencies of rotation and a device for rotation frequency control made as described above.EFFECT: higher efficiency and safety in elimination of contaminations.20 cl, 12 dwg |
