A gear position positioning device for tap switch contacts
A technology of tap changer and positioning device, which is applied to electric switches, electrical components, circuits, etc., can solve the problems of large friction and wear of contact points, unstable torque and feel and homing performance, etc. Installation and debugging accuracy, good wear resistance
Active Publication Date: 2018-09-18
WUHAN TAIPU TRANSFORMER CHANGER
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Problems solved by technology
But it also has a disadvantage: because the shape of the tooth surface meshed is a trapezoidal tooth with equal cross-section in the radial direction, when the rotating shaft rotates to drive the relative movement between the sliding sleeve and the positioning plate, it is actually the tooth farthest from the shaft sliding sleeve. The bump on the shaped section contacts and wears with the pit of the positioning disc, and when it reaches the meshing position, it is a point on the nearest section that contacts and wears, that is, the rotating support part is in point contact. At this time, the sliding sleeve and the The friction and wear of the indirect contacts of the positioning plate is large, and the torque, feel and homing performance are also unstable
Method used
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[0015] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1-4 It is a non-excitation cage tap changer, the upper part of the insulator 2 is provided with a flange 17, and the switch base 10 is installed under it, and the static contact 3 is installed along the circumference of the insulator, the switch main shaft 6 is installed in the middle of the switch base, and the middle part of the switch main shaft The moving contact 4 is installed through the support member 5, and the moving contact and the static contact are arranged in phase; a fixed positioning plate 9 is installed on the upper end of the switch seat, and a positioning pit 16 is set on the positioning plate corresponding to the position of the contact in the circumferential direction. The pit is installed on the upper end surface of the positioning plate along the circumferential di...
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The invention relates to a positioning device for the contact position of a tapping switch, and the device comprises a positioning disc and an axial elastic sliding sleeve. The positioning disc is disposed on a switch base, and the axial elastic sliding sleeve is disposed on a switch main shaft and is opposite to the positioning disc. An end face, opposite to the axial elastic sliding sleeve, of the positioning disc is provided with positioning pits or positioning bosses, corresponding to the contact positions, in the peripheral direction. An end face, opposite to the positioning disc, of the axial elastic sliding sleeve is provided with positioning bosses or positioning pits, which are matched with the positioning pits or positioning bosses on the positioning disc. The cross section of the positioning pits and positioning bosses on the positioning disc and the axial elastic sliding sleeve are trapezoid or shaped like other curved surface combinations, and are radially shaped like a fan or radial. The device improves the assembly efficiency, the quality of products and reliability, and reduces the processing cost.
Description
technical field [0001] The invention belongs to the technical field of transformer tap changers, and in particular relates to a tap position positioning device for a contact head of a tap changer. Background technique [0002] The existing contact gear position positioning device for the body part of the transformer tap changer makes the switch movable contact have a strong hand feeling when it is in the positioning position and when the tap change is started and in place, which improves the reliability of operation positioning and the stability of contact . But it also has a disadvantage: because the shape of the tooth surface meshed is a trapezoidal tooth with equal cross-section in the radial direction, when the rotating shaft rotates to drive the relative movement between the sliding sleeve and the positioning plate, it is actually the tooth farthest from the shaft sliding sleeve. The bump on the shaped section contacts and wears with the pit of the positioning disc, an...
Claims
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IPC IPC(8): H01H19/12H01H19/08H01H19/10
CPCH01H19/08H01H19/10H01H19/12
Inventor 丁志彪刘刚
Owner WUHAN TAIPU TRANSFORMER CHANGER