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CN-224217391-U - Moving contact centering and positioning device for grounding switch

CN224217391UCN 224217391 UCN224217391 UCN 224217391UCN-224217391-U

Abstract

The application provides a centering and positioning device for a moving contact of a grounding switch, which is used for centering and positioning the moving contact in the installation process of the grounding switch and comprises a supporting frame, a positioning frame and a positioning frame, wherein the supporting frame is arranged on the supporting frame; the support frame comprises an upper support plate and a lower support plate, the upper support plate and the lower support plate are fixedly arranged through a support column according to an upper structure and a lower structure, a centering sleeve suitable for inserting a moving contact is arranged on the surface of the lower support plate, a preset number of limiting holes are formed in the surface of the upper support plate, the preset number of limiting holes are sequentially distributed on the surface of the upper support plate, and the distance between every two adjacent limiting holes is consistent with the distance between the moving contacts of the grounding switch, so that the moving contact can be inserted into the centering sleeve of the lower support plate through the limiting holes, and centering and positioning of the moving contact are achieved. According to the centering positioning device, the upper support plate is provided with the limiting holes, and the centering sleeve is fixedly arranged on the lower support plate, so that the moving contact is inserted into the corresponding centering sleeve through the limiting holes to realize centering positioning of the moving contact.

Inventors

  • DU QINGFA
  • WU BIN
  • FENG SHUANGXI
  • LIU MEIXUAN
  • LIU JIA

Assignees

  • 国电博纳（北京）电力设备有限公司

Dates

Publication Date
20260508
Application Date
20250509

Claims (8)

  1. 1. The centering and positioning device for the moving contact of the grounding switch is characterized by comprising a supporting frame, a positioning mechanism and a positioning mechanism, wherein the supporting frame is used for centering and positioning the moving contact in the installation process of the grounding switch; The support frame comprises an upper support plate and a lower support plate, and the upper support plate and the lower support plate are fixedly arranged through a support post according to an upper-lower structure; A centering sleeve suitable for inserting the moving contact is arranged on the plate surface of the lower supporting plate; The face of the upper supporting plate is provided with a preset number of limiting holes, the preset number of limiting holes are sequentially distributed on the face of the upper supporting plate, and the distance between every two adjacent limiting holes is consistent with the distance between the moving contacts of the grounding switch, so that the moving contacts can penetrate through the limiting holes and are inserted into the centering sleeves of the lower supporting plate, and centering and positioning of the moving contacts are achieved.
  2. 2. The centering and positioning device for the moving contact of the grounding switch as claimed in claim 1, wherein limiting grooves are formed on two sides of the limiting hole; the main body of the limiting groove is concave, and the concave part of the limiting groove is arranged along the direction opposite to the lower supporting plate and is parallel to the plate surface of the upper supporting plate, so that the tail part of the moving contact is clamped when the moving contact is inserted into the centering sleeve through the limiting hole.
  3. 3. The centering and positioning device for the moving contact of the grounding switch according to claim 1, wherein a sleeve hole is formed in one end, facing the upper supporting plate, of the centering sleeve, and the sleeve hole is matched with the moving contact; Wherein, the screw hole has still been seted up towards the one end of lower backup pad to the connecting piece.
  4. 4. A centering and positioning device for a moving contact of a grounding switch according to any one of claims 1 to 3, wherein a through hole is formed in a position corresponding to the limiting hole on the surface of the lower support plate, and a connecting piece of the centering sleeve is adapted to the through hole, so that the centering sleeve is fixedly placed on the lower support plate.
  5. 5. The centering and positioning device for the movable contact of the grounding switch according to claim 1, further comprising a support column, wherein the support column is fixedly connected with the upper support plate, and is suitable for supporting and positioning a support seat assembly of the grounding switch; The edge of the upper supporting plate is provided with a positioning hole, and the supporting column is fixedly connected with the upper supporting plate through the positioning hole.
  6. 6. The centering and positioning device for a movable contact of a grounding switch as claimed in claim 5, wherein said support column comprises a connecting portion and a supporting portion; The connecting part is fixedly connected with the supporting part, the diameter of the connecting part is smaller than that of the supporting part, and a screw hole is formed in one end, facing the upper supporting plate, of the supporting part, so that a bolt passes through the positioning hole of the upper supporting plate and the screw hole of the supporting column and is fixedly connected with the upper supporting plate.
  7. 7. The centering and positioning device for the movable contact of the grounding switch according to claim 1, wherein the surface of the upper supporting plate is also provided with a preset number of rectangular holes, and the sizes of the rectangular holes are not identical; Wherein, the rectangular hole all sets up spacing hole both sides.
  8. 8. The centering and positioning device for a movable contact of a grounding switch according to claim 1, further comprising a baffle plate disposed on a side of the lower support plate facing the ground; the center of the baffle is provided with a yielding hole, and the diameter of the yielding hole is consistent with that of a screw hole of the centering sleeve, so that a bolt passes through the yielding hole and the screw hole and then fixes the centering sleeve on the lower support plate.

Description

Moving contact centering and positioning device for grounding switch Technical Field The utility model belongs to the technical field of high-voltage switches, and particularly relates to a movable contact centering and positioning device for a grounding switch. Background The gas insulated switchgear (Gas Insulated Switchgear, abbreviated as GIS) has been widely used in recent years because of its advantages of small occupied area, strong environmental tolerance, high operational reliability, convenient operation, long maintenance cycle, less maintenance workload, and the like. The primary equipment except the transformer comprises a breaker, an isolation grounding switch, a bus, a voltage transformer, a current transformer, a lightning arrester, a cable terminal and the like, and is combined into a whole through optimal design. In GIS equipment, the earthing switch has the ability of closing short-circuit current certainly, plays protection electrical equipment and personal safety's effect, and the drive mechanism on the earthing switch is complicated, the assembly is comparatively troublesome, needs the manual work to dock moving contact and stationary contact when the assembly, because the inaccurate moving contact location has moving contact and stationary contact to dock in place or dock unstable condition when docking, probably brings the potential safety hazard. Therefore, how to realize the centering positioning of the moving contact of the grounding switch is a problem to be solved by those skilled in the art when assembling the grounding switch. Disclosure of utility model The utility model aims to solve the technical problems of overcoming the defects of the prior art and providing a centering and positioning device for a moving contact of a grounding switch, which is used for centering and positioning the moving contact in the installation process of the grounding switch and comprises a supporting frame, a positioning frame and a positioning frame, wherein the supporting frame is used for supporting the moving contact; The support frame comprises an upper support plate and a lower support plate, and the upper support plate and the lower support plate are fixedly arranged through a support post according to an upper-lower structure; A centering sleeve suitable for inserting the moving contact is arranged on the plate surface of the lower supporting plate; The limiting holes with preset number are formed in the plate surface of the upper supporting plate, the limiting holes with preset number are sequentially distributed on the plate surface of the upper supporting plate, and the distance between every two adjacent limiting holes is consistent with the distance between the moving contacts of the grounding switch, so that the moving contacts can penetrate through the limiting holes to be inserted into the centering sleeves of the lower supporting plate, and centering and positioning of the moving contacts are achieved. In one possible implementation, two sides of the limiting hole are provided with limiting grooves; The main body of the limiting groove is concave, and the concave part of the limiting groove is arranged along the direction of the back-down supporting plate and is parallel to the plate surface of the upper supporting plate, so that the tail part of the moving contact is clamped when the moving contact is inserted into the centering sleeve through the limiting hole. In one possible implementation mode, one end of the centering sleeve facing the upper supporting plate is provided with a sleeve hole which is matched with the moving contact, and meanwhile, the centering sleeve facing the lower supporting plate is also provided with a connecting piece, and the diameter of the connecting piece is smaller than that of the centering sleeve; Wherein, the screw hole has still been seted up towards the one end of lower backup pad to the connecting piece. In one possible implementation, the surface of the lower support plate is provided with a through hole at a position corresponding to the limit hole, and the connecting piece of the centering sleeve is matched with the through hole, so that the centering sleeve is fixedly placed on the lower support plate. In one possible implementation, the grounding switch further comprises a support column, wherein the support column is fixedly connected with the upper support plate and is suitable for supporting and positioning the support seat assembly of the grounding switch; wherein, the locating hole has been seted up to the edge of last backup pad, and the support column passes through locating hole and last backup pad fixed connection. In one possible implementation, the support column includes a connection portion and a support portion; The connecting part is fixedly connected with the supporting part, the diameter of the connecting part is smaller than that of the supporting part, and a screw hole is formed in one end of the supporting part facing