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CN-224232553-U - Fastening device for vacuum arc-extinguishing chamber and insulating pull rod assembly

CN224232553UCN 224232553 UCN224232553 UCN 224232553UCN-224232553-U

Abstract

The utility model discloses a fastening device for a vacuum arc-extinguishing chamber and an insulating pull rod assembly, which comprises an upper bracket, a vacuum arc-extinguishing chamber, a plastic supporting ring, a flexible connection and an insulating pull rod, wherein the device comprises a bottom plate base, a fixed upright post is connected to the bottom plate base, the flexible connection is connected to one side of the fixed upright post, the flexible connection sleeve is arranged on the insulating pull rod, an auxiliary sliding spanner is fixed to the upper end of the fixed upright post, the auxiliary sliding spanner is used for positioning the upper end of the insulating pull rod, the bottom plate base is provided with the sliding upright post in a sliding manner, and the sliding spanner is connected to the side face of the sliding upright post.

Inventors

  • LIU AIWEN
  • WANG SHUNCHAO

Assignees

  • 思贝尔电气有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (8)

  1. 1. The vacuum arc-extinguishing chamber and insulating pull rod assembly fastening device comprises an upper bracket, a vacuum arc-extinguishing chamber, a plastic supporting ring, a soft connection and an insulating pull rod, wherein the vacuum arc-extinguishing chamber is connected to the upper bracket through a bolt, the plastic supporting ring is sleeved and fixed on the vacuum arc-extinguishing chamber, and the insulating pull rod is in threaded connection with the upper end of the vacuum arc-extinguishing chamber.
  2. 2. The device for fastening the vacuum interrupter and the insulating pull rod assembly according to claim 1, wherein the base plate is provided with a circular arc-shaped through hole, the upper end and the lower end of the through hole are respectively provided with a sliding groove, the upper end and the lower end of the sliding groove are respectively provided with a large sliding block and a small sliding block, the sliding upright post is connected to the large sliding block, and an outer hexagon screw is connected between the large sliding block and the small sliding block.
  3. 3. The device for fastening a vacuum interrupter and an insulating pull rod assembly according to claim 2, wherein the outer hexagon screw is sleeved with a hexagon nut, and two sides of the hexagon nut are rotatably connected with arc handles through pin shafts.
  4. 4. The vacuum interrupter and insulating pull rod assembly fastening device of claim 1, wherein the arc-shaped comb plate is sleeved and fixed on the sliding upright post, the cross buckle sliding block is sleeved and connected on the arc-shaped comb plate, the sliding wrench is inserted in the cross buckle sliding block, the top surface of the cross buckle sliding block is meshed with the arc-shaped comb plate, an outer hexagon screw is connected with the bottom of the cross buckle sliding block in a threaded manner, and the outer hexagon screw is positioned at the lower end of the sliding wrench.
  5. 5. The vacuum interrupter and insulating pull rod assembly fastening device of claim 1, wherein the base plate is provided with a fixed clamping block and a cylinder, the output end of the cylinder is connected with a sliding clamping block, and the fixed clamping block and the sliding clamping block are positioned on two sides of the upper bracket.
  6. 6. The device for fastening a vacuum interrupter and an insulating drawbar assembly according to claim 5, wherein the base plate is formed with L-shaped guide rails, and the L-shaped guide rails are distributed on both side end surfaces of the sliding clamping blocks.
  7. 7. The device for fastening a vacuum interrupter and an insulating pull rod assembly according to claim 1, wherein the arc-shaped connectors are formed at two ends of the upper bracket, each arc-shaped connector comprises an arc surface and planes formed at two ends of the arc surface, and the planes of the arc-shaped connectors are inserted into the sliding clamping blocks or the fixed clamping blocks.
  8. 8. The device for fastening a vacuum interrupter and an insulating pull rod assembly according to claim 1, wherein the fixed upright post is connected with a flexible connection support through a bolt, the flexible connection support is connected with a flexible connection support through a bolt, and the flexible connection is fixed on the flexible connection support.

Description

Fastening device for vacuum arc-extinguishing chamber and insulating pull rod assembly Technical Field The utility model relates to the technical field of fastening tools of vacuum arc-extinguishing chambers, in particular to a fastening device of a vacuum arc-extinguishing chamber and an insulating pull rod assembly. Background Indoor medium-high voltage vacuum circuit breakers are widely used as important switching equipment in the power industry. Among them, the insulating cylinder pole type vacuum circuit breaker still occupies a main market place in the industry development long river due to the economical and practical characteristics. The insulating cylinder type pole is formed by an internal vacuum arc-extinguishing chamber, an insulating pull rod assembly, an external bobbin and the like, and the internal detachable replacement and convenient maintenance and observation are obvious advantages which are different from the integral pouring type solid sealing pole. The vacuum arc-extinguishing chamber and the insulating pull rod assembly are main components inside the insulating cylinder pole. The research on the connection reliability of the nut at the connection part of the vacuum arc extinguishing chamber and the insulating pull rod generally can improve the fastening process by redesigning the internal connection structure of the device or designing an auxiliary connection device. The patent CN217035517U designs an insulating pull rod mounting structure of a vacuum arc-extinguishing chamber, wherein an insulating pull rod lower pull rod is connected with a vertical pull rod, and the vertical pull rod is hinged with a swing end of a crank arm of a mechanism by adopting a pin shaft, so that a pull rod nut is prevented from loosening caused by vibration when the mechanism is closed and opened. The patent CN212934479U designs a vacuum arc-extinguishing chamber component and a connecting device, and the insulating pull rod is extruded by a conductive column, a spring contact finger and a moving contact support to form spring pressure, so that the vacuum arc-extinguishing chamber is tightly connected with the insulating pull rod. The design of the internal connection structure of the device is generally complex, the assembly and the disassembly are inconvenient, such as the design of an insulating pull rod, a vacuum arc-extinguishing chamber and the like, and the internal connection structure of the device is basically standardized and has high universality in the industry. The design difficulty of the auxiliary connecting device is that when the vacuum arc-extinguishing chamber and the insulating pull rod assembly are fastened, the soft connection can be rotated along with the rotation to influence the installation of a subsequent insulating cylinder due to friction stress when the outer hexagonal nut is fastened, and secondly, the integral rotation stress of the assembly lacks support, so that the nut is not in place fastened and is in vibration loose risk, and finally the product characteristics are influenced. Therefore, the designed auxiliary connecting device is required to have good positioning performance, convenient assembly and disassembly, practicality, adjustability and reliable connection. Disclosure of utility model The utility model aims to provide a fastening device for a vacuum arc-extinguishing chamber and an insulating pull rod assembly, which solves the problems that the soft connection can rotate along with a nut and the nut cannot be fastened in place. The utility model provides a vacuum arc-extinguishing chamber and insulating pull rod assembly fastening device which comprises an upper bracket, a vacuum arc-extinguishing chamber, a plastic supporting ring, a flexible connection and an insulating pull rod, wherein the vacuum arc-extinguishing chamber is connected to the upper bracket through a bolt, the plastic supporting ring is sleeved and fixed on the vacuum arc-extinguishing chamber, the insulating pull rod is connected to the upper end of the vacuum arc-extinguishing chamber through a thread, the vacuum arc-extinguishing chamber comprises a bottom plate base, a fixed upright post is connected to the bottom plate base, one side of the fixed upright post is connected with the flexible connection, the flexible connection is arranged on the insulating pull rod, the flexible connection is positioned at the upper end of the vacuum arc-extinguishing chamber, an auxiliary sliding spanner is fixed at the upper end of the fixed upright post, the auxiliary sliding spanner positions the upper end of the insulating pull rod, a sliding upright post is arranged on the bottom plate base in a sliding manner, a sliding spanner is connected to the side surface of the sliding upright post, and the sliding spanner is used for being inserted into the vacuum arc-extinguishing chamber. Further, circular arc through-holes are formed in the base plate, sliding grooves are formed in the upper end and th