An internal gear operating mechanism of a tap changer for a transformer
A technology of tap changer and operating mechanism, applied in transformers, variable transformers, electric switches, etc., can solve the problems of long center distance, large volume, and insufficient compactness of gears, and achieve compact structure, small overall volume, and simple structure generous effect
Active Publication Date: 2015-12-16
任宏宇
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Problems solved by technology
[0002] The tap-changer operating mechanism widely used in the transformer tap-changer industry mainly has two structures: spur gear meshing transmission and worm drive. In the patent CN200990326Y, an operating mechanism with a spur gear structure is mentioned. It has a simple structure and low manufacturing cost. Low-level advantages, but the shortcomings are as follows: the gear transmission is a meshing structure of external gears and external gears, and the center distance of the gears is long. Under the same transmission ratio, compared with the internal gear control mechanism, the overall volume is obviously larger, making it not compact enough.
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[0010] Embodiments of the present invention are further described below in conjunction with the accompanying drawings, as figure 1 Shown is an internal gear operating mechanism of a transformer tap changer according to the present invention. It mainly includes a bracket body 4, a handle 5, a layer partition 6, a torque input shaft 7, a torque output shaft 8, external gears 1, 2, 3, internal gears 1', 2', 3', and the number of teeth is Z 1 = 20 of the external gear 1 and the number of teeth is Z' 1 The internal gear 1' of =60 is meshed under the layer partition plate 6-1 to form the first layer of transmission structure, and the transmission ratio of the internal and external gears is i 1 = Z' 1 / Z 1 =3; where the number of teeth is Z 2 = 20 external gear 2 and the number of teeth is Z' 2 The internal gear 2' of =40 is meshed under the layer partition plate 6-2 to form the second layer of transmission structure, and the transmission ratio of the internal and external gears...
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The invention relates to an internal gear control mechanism of a tap switch for a transformer. By means of the internal gear control mechanism, operators can carry out tap-position switching on the tap switch. The internal gear control mechanism comprises a support body, a control handle, a layer separation board, a torque input shaft, a torque output shaft, an internal gear, an external gear, and the like. The internal gear control mechanism is characterized in that the relation between the transmission ratios in the layers of the transmission structure is Z'1 / Z1>Z'2 / Z2>...>Z'N-1 / ZN-1, and the relation between the transmission ratios meets the inequation that Z'N / ZN>Z'1 / Z1. The internal gear control mechanism has the advantages that the internal gear and the external gear are meshed, the gear center distance is shortened, therefore, the structure is more compact, space utilization rates are high, and the whole size becomes small; corresponding N layers of gear transmission structures can be arranged according to application needs, and therefore functional demands for change of different transmission ratios can be met; the control handle part can be placed inside the internal gear control mechanism, and therefore the structure is simple and elegant.
Description
technical field [0001] The invention relates to an internal gear control mechanism that can be used for a tap changer of a transformer, capable of switching gears of the tap changer by an operator, so as to realize voltage regulation of the transformer. Background technique [0002] The tap changer operating mechanism widely used in the transformer tap changer industry mainly has two structures: spur gear meshing transmission and worm drive. In the patent CN200990326Y, an operating mechanism with a spur gear structure is mentioned. It has a simple structure and low production cost. Low-level advantages, but the disadvantages are as follows: the gear transmission is an meshing structure of external gears and external gears, and the center distance of the gears is long. Compared with the internal gear operating mechanism under the same transmission ratio, the overall volume is obviously larger, making it not compact enough. In the worm drive structure, its rotating transmissio...
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IPC IPC(8): H01H19/12H01H19/20H01F29/04
Inventor 任宏宇
Owner 任宏宇