Frequency-conversion power device for cutting motor of heading machine
A technology for cutting motors and power devices, which is used in output power conversion devices, conversion of AC power input to DC power output, electrical components, etc. At the same time, taking into account the maintenance and other issues, to achieve the effect of high power density, high fast maintainability, and small size
Active Publication Date: 2015-07-15
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
Therefore, ordinary flameproof frequency converters cannot meet the needs of high power density and maintainability of roadheaders, and cannot be transplanted into the electric control box of roadheaders for use.
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0022] figure 1 It is a schematic diagram of the front view of the frequency conversion power device for the cutting motor of the roadheader according to the embodiment of the present invention, figure 2 It is a top view schematic diagram of the frequency conversion power device for the cutting motor of the roadheader according to the embodiment of the present invention. like Figure 1-2 As shown, in this embodiment, the frequency conversion power device for the cutting motor of the roadheader includes a flameproof electric control box 1 and a frequency conversion power module arranged in the flameproof electric control box 1 . Wherein, the flameproof electric control box 1 is provided with a front door 101 and a side ...
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The invention discloses a frequency-conversion power device for a cutting motor of a heading machine. The frequency-conversion power device comprises an explosive-proof electric cabinet and a frequency-conversion power module arranged in the explosive-proof electric cabinet, wherein the explosive-proof electric cabinet is provided with a side door and a front door, the front door and the side door are arranged on two adjacent side walls of the explosive-proof electric cabinet respectively, the side door is a hinged door capable of being opened and closed, and a hinge of the side door is arranged on the edge of the opposite side wall of the front door; the frequency-conversion power module comprises a side door moving assembly and an in-cabinet fixed assembly, the side door moving assembly comprises a power semiconductor device and is arranged on the inner wall where the side door of the explosive-proof electric cabinet is located, and the in-cabinet fixed assembly comprises a capacitor assembly and a control circuit and is arranged in the explosive-proof electric cabinet. The frequency-conversion power device for the cutting motor of the heading machine is small in size and high in power density and facilitates underground maintenance.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a frequency conversion power device for cutting motors of roadheaders. Background technique [0002] The roadheader is an important equipment for underground coal mine operations, and it continuously breaks rocks through the main cutting motor. At present, the main cutting motor adopts the speed regulation method of variable pole logarithm for speed regulation. The variable pole logarithm speed regulation method changes the number of motor stator pole pairs by changing the wiring mode of the motor stator winding, thereby achieving the purpose of speed regulation. This method belongs to step speed regulation, and its step difference is large, so that the main cutting motor of the roadheader cannot obtain smooth speed regulation characteristics, and cannot meet the needs of various grades of rock formations during excavation work, affecting production progress. [0003]...
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IPC IPC(8): H02M7/00H05K7/20
Inventor 彭凯王洪峰范伟李雪荣陈锋李彦涌许浩
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST