On-line dynamic balancing head for bidirectionally adjust two balancing discs to by driving of stepping motor
A stepping motor, two-way adjustment technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of slow adjustment speed, low control accuracy, complex structure, etc., and achieve high adjustment efficiency, high control accuracy, and small size Effect
Active Publication Date: 2018-02-16
NORTHEASTERN UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to effectively overcome the disadvantages of the existing online dynamic balancing device, such as complex structure, low control precision, and slow adjustment speed.
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Embodiment Construction
[0027] A motor-driven dynamic balancing head structure.
[0028] First of all, the dynamic balancing head is required to be able to set an eccentricity with adjustable size and phase on a vertical plane of the rotating shaft. In order to realize this function, this paper adopts the double counterweight fixed radius polar coordinate method, and its schematic diagram is as follows figure 1 As shown, two fixed counterweights with both mass m and distance r can provide minimum 0 (relative angle is 180°) and maximum 2mr (included angle is 0°) balance mass.
[0029] The present invention is divided into two parts: one part is the balance plate part, which is composed of balance plates A and B to provide double counterweights. Although the balance quality provided by each counterweight in the double counterweights is fixed, by changing the double counterweights The relative included angle, thereby changing the balance quality of the final overall output, the largest when the inclu...
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An on-line dynamic balancing head for bidirectionally adjust two balancing discs by driving of a stepping motor comprises a balancing disc part and a control disc part, wherein the balancing disc partand the control disc part are connected to a shaft sleeve of the dynamic balancing head in an interference fit way by bearings, the shaft sleeve is fixedly connected to a main shaft via a tension sleeve, the balancing discs can freely rotate relative to the main shaft by driving of the stepping motor, and a control disc synchronously rotate with the main shaft in real time. With the adoption of dual-counter weight fixed-radius polar coordinate mode, the balancing discs A and B form dual counter weights, the balancing mass provided by each counter weight in the dual counter weights is fixed, while the balancing mass output integratedly can be changed by changing a relative included angle of the dual counter weights. The control system is simple and is high in control accuracy; with the adoption of a gear to transmit, the counter weight accuracy is high; the balancing discs can be bidirectionally adjusted, and the adjustment efficiency is high; and the whole on-line dynamic balancing head is of a mechanical structure, and no electromagnetic interference on a main shaft system is generated.
Description
technical field [0001] The invention belongs to the technical field of rotor system dynamic balance, and in particular relates to a rotor online dynamic balance head structure. Background technique [0002] Rotor imbalance is the main cause of mechanical equipment vibration. The dynamic load caused by the unbalanced rotor on the support not only causes vibration of the entire mechanical equipment, generates noise, accelerates bearing wear, causes high-frequency fatigue damage to the rotor components and forced vibration damage to some parts of the supporting part, and reduces the life of the mechanical equipment. What's more serious is that if the vibration of the rotor structure exceeds a certain range at high speed, the slewing mechanism and even the entire system will be damaged, causing major equipment accidents. Therefore, it is necessary to eliminate the unbalanced vibration of the rotor system through an effective method. At present, the most commonly used method is...
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IPC IPC(8): H02K37/24H02K7/04
CPCH02K7/04H02K37/24
Inventor 侯小捷叶瑞夺魏彦辉王菲罗忠
Owner NORTHEASTERN UNIV