Self-locking scored pulley structure for tapping switch
A tap changer and self-locking technology, which is applied in the direction of electric switches, transformers, electrical components, etc., can solve the problems of inconvenient process, affecting contact reliability, and high cleanliness requirements, so as to achieve good centering effect of sheaves and reduce The effect of processing cost and improving assembly efficiency
Active Publication Date: 2016-11-23
WUHAN TAIPU TRANSFORMER CHANGER
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Problems solved by technology
[0002] The sheave of the existing tap changer and the main shaft of the switch are mainly connected by keys or pins. When it is a fixed connection, the matching accuracy of the parts of the tap changer is very high, otherwise the accumulation of errors will cause the contact positioning of the dynamic and static contacts of the switch. Low precision will even directly affect the contact reliability; when it is a pin connection, it is generally realized by matching the drill and riveting the pin of the sheave and the main shaft after the positioning is accurate, so that the axial and circumferential positions of the sheave can be adjusted. The positioning accuracy of the dynamic and static contacts is improved, but the drilling process is complicated, and the cleanliness after the drilling process is high, which is very inconvenient in the process, and it can only be drilled once without the readjustment function, and the technical requirements for the assembly personnel are relatively high. high
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[0017] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as Figure 1-5 As shown, a self-locking sheave structure of a tap changer, including a shift fork 1 and a sheave 2, the sheave mechanism is located above the switch flange 10, the upper end of the fork is clutched with the bottom end of the transmission shaft 3, and the transmission shaft The top of the sheave is connected with the operating mechanism 4, the sheave is connected with the switch main shaft 5 through the connecting pin 7, the central through hole of the sheave is a taper hole 14, and a taper sleeve 11 is arranged between the switch main shaft and the taper hole, and the outer cone of the taper sleeve The surface 15 is arranged with the tapered hole, the bottom of the sheave is placed on the upper part of the step of the switch spindle, the top of the taper sleeve is pressed b...
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The invention relates to a self-locking scored pulley structure for a tapping switch. A driving device comprises a shifting fork and a scored pulley, wherein the shifting fork is connected with a driving shaft; the driving shaft is connected with an operation mechanism; the scored pulley is connected with a switch spindle; a central through hole of the scored pulley is arranged as a taper hole; a taper sleeve is arranged between the switch spindle and the taper hole; the periphery of the taper sleeve is matched with the taper hole; the bottom of the scored pulley is arranged on the upper part of the step of the switch spindle; the top of the taper sleeve is pressed by a nut and is wedged between the scored pulley and the switch spindle. The self-locking scored pulley structure for the tapping switch can increase the assembling efficiency, product quality and reliability and can reduce processing cost.
Description
technical field [0001] The invention belongs to the technical field of transformer tap changers, in particular to a self-locking sheave structure of a tap changer. Background technique [0002] The sheave of the existing tap changer and the main shaft of the switch are mainly connected by keys or pins. When it is a fixed connection, the matching accuracy of the parts of the tap changer is very high, otherwise the accumulation of errors will cause the contact positioning of the dynamic and static contacts of the switch. Low precision will even directly affect the contact reliability; when it is a pin connection, it is generally realized by matching the drill and riveting the pin of the sheave and the main shaft after the positioning is accurate, so that the axial and circumferential positions of the sheave can be adjusted. The positioning accuracy of the dynamic and static contacts is improved, but the drilling process is complicated, and the cleanliness after the drilling pr...
Claims
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IPC IPC(8): H01H9/00H01F29/02
CPCH01F29/02H01H9/0027
Inventor 刘刚
Owner WUHAN TAIPU TRANSFORMER CHANGER