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CN-115911969-B - Self-locking type electric connection structure and high-voltage switch equipment

CN115911969BCN 115911969 BCN115911969 BCN 115911969BCN-115911969-B

Abstract

The self-locking type electric connection structure comprises a first conductor, a second conductor, a buckling contact finger, a reset elastic piece and a contact plate, wherein the buckling contact finger is hinged to the second conductor and is used for being electrically connected and clamped with a clamping groove on the outer peripheral surface of the first conductor, the reset elastic piece is used for enabling the buckling contact finger to be tightly clamped with the clamping groove, an unlocking device is arranged on a path of sliding of the buckling contact finger along the clamping groove, the buckling contact finger is enabled to be separated from the clamping groove when the buckling contact finger is matched with the unlocking device, the contact plate is used for being electrically connected with the end portion of the first conductor and is connected with the second conductor through a conductive compression elastic piece, and the buckling contact finger is matched with the clamping groove when the conductive compression elastic piece is compressed to a preset state. The invention can realize self-locking through the matching of the buckle contact finger and the clamping groove, ensures the stability of connection and the high reliability of connection, can quickly realize unlocking through the matching of the buckle contact finger and the unlocking device, and simplifies the steps of installation and disassembly of electric connection. The embodiment of the invention also discloses high-voltage switch equipment.

Inventors

  • KANG BOPENG
  • TANG XIANMING
  • ZHANG TAO
  • LIU JINJI
  • GAO WEIXUN

Assignees

  • 西安西电高压开关有限责任公司
  • 中国西电电气股份有限公司

Dates

Publication Date
20260505
Application Date
20210817

Claims (11)

  1. 1. A self-locking electrical connection structure comprising a first conductor (100) and a second conductor (200), characterized in that it further comprises: The clamping contact fingers (400) are at least two and hinged to the second conductor (200), and the clamping contact fingers (400) are used for being electrically connected and clamped with clamping grooves (101) on the outer peripheral surface of the first conductor (100) when the first conductor (100) and the second conductor (200) are electrically connected; The reset elastic piece (401) is used for enabling the clamping contact finger (400) to clamp the clamping groove (101), an unlocking device is arranged on the first conductor (100), the unlocking device is arranged on a path of sliding of the clamping contact finger along the clamping groove, and when the clamping contact finger (400) is matched with the unlocking device, the clamping contact finger (400) is separated from the clamping groove (101); The contact plate (300) is used for being electrically connected with the end part of the first conductor (100) and connected with the second conductor (200) through a conductive compression elastic piece (500), and when the conductive compression elastic piece (500) is compressed to a preset state, the clamping contact finger (400) is matched with the clamping groove (101); The unlocking device is arranged in the clamping groove (101) and is in one-to-one correspondence with the buckling contact fingers (400) to unlocking protrusions (102), and the unlocking protrusions (102) are close to one sides of the buckling contact fingers (400) and smoothly transition to the bottom of the clamping groove (101).
  2. 2. The self-locking electrical connection structure according to claim 1, wherein the second conductor (200) comprises a base (201) and a shielding case (202) located around the base (201), and the snap finger (400) is hinged to the base (201) and is located within a surrounding range of the shielding case (202); The contact plate (300) is arranged on the base (201) through a conductive compression elastic piece (500) and is positioned in the surrounding range of the shielding cover (202).
  3. 3. The self-locking type electric connection structure according to claim 1, wherein the height of the unlocking protrusion (102) is not smaller than the depth of the card slot (101).
  4. 4. The self-locking type electric connection structure according to claim 1, wherein the unlocking device is an unlocking sliding groove (103) which is arranged on the outer surface of the first conductor (100) and corresponds to the buckling contact fingers (400) one by one, a first end of the unlocking sliding groove (103) is communicated with the clamping groove (101), and a second end of the unlocking sliding groove is inclined towards the contact end direction of the first conductor (100) and the contact plate (300); The depth of the first end of the unlocking slide groove (103) is larger than that of the second end, and the unlocking slide groove (103) is smoothly transited from the first end to the second end.
  5. 5. The self-locking type electric connection structure according to claim 4, wherein the depth of the first end of the unlocking slide groove (103) is the same as the depth of the clamping groove (101), and the depth of the second end of the unlocking slide groove (103) is 0.
  6. 6. The self-locking electrical connection according to any one of claims 1 to 5, wherein one of the first conductor (100) and the second conductor (200) is provided with a zone marking and the other is provided with an indicator marking, the zone marking comprising a self-locking marking and an unlocking marking; When the indication mark corresponds to the self-locking mark, the first conductor (100) and the second conductor (200) are in a self-locking state; when the indication mark and the unlocking mark correspond, the first conductor (100) and the second conductor (200) are in an unlocking state.
  7. 7. The self-locking type electric connection structure according to claim 1, wherein the plugging end of the first conductor (100) is provided with a guiding portion for pushing up the snap contact finger (400), and the diameter of the end portion of the guiding portion is smaller than the area surrounded by the snap contact finger (400).
  8. 8. The self-locking type electric connection structure according to claim 1, wherein the snap-in contact finger (400) is hinged to the second conductor (200) through a telescopic shaft (402), a hinge hole for the telescopic shaft (402) to pass through is formed in a hinge support of the second conductor (200), the snap-in contact finger (400) is provided with hinge plates clamped on two sides of the hinge support, a mounting blind hole is formed in one side of the hinge plate facing the hinge support, and two ends of the telescopic shaft (402) are respectively arranged in the mounting blind holes of the two hinge plates.
  9. 9. The self-locking electrical connection according to claim 1, wherein the electrically conductive compression spring (500) is a compression spring with a silver-plated coating, and/or The return elastic piece (401) is a torsion spring.
  10. 10. The self-locking electrical connection according to claim 1, wherein the predetermined state is that the contact plate (300) is attached to the second conductor (200); the contact plate (300) is provided with a first mounting hole (302), a second mounting hole (203) is formed in a position of the second conductor (200) corresponding to the first mounting hole (302), and two ends of the conductive compression elastic piece (500) are respectively arranged in the first mounting hole (302) and the second mounting hole (203).
  11. 11. A high voltage switchgear comprising an electrical connection structure, characterized in that the electrical connection structure is a self-locking electrical connection structure according to any one of claims 1-10.

Description

Self-locking type electric connection structure and high-voltage switch equipment Technical Field The invention relates to the technical field of high-voltage switches, in particular to a self-locking type electric connection structure and high-voltage switch equipment. Background Both gas-insulated metal-enclosed switchgear and high-voltage switchgear are devices commonly used in the field of high-voltage electricity. The gas-insulated metal-enclosed switchgear mainly comprises a circuit breaker, an isolating switch, a grounding switch, a mutual inductor, a bus and the like, wherein the components are also called functional units of the gas-insulated metal-enclosed switchgear, and all the functional units are arranged in a metal-grounded shell in a sealing manner. Electrical connection structures are required in both gas insulated metal-enclosed switchgear and high voltage switchgear. The electric connection structure is a detachable position arranged inside the gas-insulated metal-enclosed switchgear and the high-voltage switchgear, and is a structure capable of realizing the communication of conductor currents at two ends. The conductive connection structure includes conductors at both ends and a shield fixed to one of the conductors for shielding an arc generated when the conductors are electrically connected. In order to maintain the reliability of the electrical connection, the electrical connection structure is commonly used in two modes of bolt fastening connection and contact finger sliding connection. The conductors at two ends are fixed through bolts when the conductors at two ends are electrically connected, so that the conductors at two ends can be locked, the connection reliability is high, the installation and the disassembly are complex, and bolt mounting holes are needed to be reserved near the shell. The contact finger sliding connection is to install a contact finger spring on one conductor, and to hold the other conductor tightly by the tension of the spring to realize point contact. The contact finger sliding connection structure is convenient to install and detach, but cannot fasten the locking conductor, and the reliability of electric connection is poor. Therefore, how to simplify the steps of mounting and dismounting the electrical connection while ensuring high reliability of the electrical connection is a technical problem to be solved by those skilled in the art. Disclosure of Invention Accordingly, an object of the present invention is to provide a self-locking type electrical connection structure, which can simplify the steps of mounting and dismounting the electrical connection while ensuring high reliability of the electrical connection; another object of the present invention is to provide a high voltage switchgear having the above self-locking type electrical connection structure. In order to achieve the above purpose, the present invention provides the following technical solutions: A self-locking electrical connection structure comprising a first conductor and a second conductor, further comprising: The clamping contact fingers are at least two and hinged to the second conductor, and are used for being electrically connected and clamped with clamping grooves on the outer peripheral surface of the first conductor when the first conductor is electrically connected with the second conductor; The reset elastic piece is used for enabling the buckle contact finger to hug the clamping groove, an unlocking device is arranged on the first conductor, the unlocking device is arranged on a path along which the buckle contact finger slides along the clamping groove, and when the buckle contact finger is matched with the unlocking device, the buckle contact finger is enabled to be separated from the clamping groove; and the contact plate is electrically connected with the end part of the first conductor and connected with the second conductor through a conductive compression elastic piece, and when the conductive compression elastic piece is compressed to a preset state, the clamping contact finger is matched with the clamping groove. Preferably, in the self-locking electrical connection structure, the second conductor includes a base and a shielding case around the base, and the snap contact finger is hinged to the base and is located within a surrounding range of the shielding case; the contact plate is arranged on the base through a conductive compression elastic piece and is positioned in the surrounding range of the shielding cover. Preferably, in the self-locking electrical connection structure, the unlocking device is an unlocking protrusion which is arranged in the clamping groove and corresponds to the fastening contact fingers one by one, and the unlocking protrusion is close to one side of the fastening contact fingers and smoothly transits to the bottom of the clamping groove. Preferably, in the self-locking electrical connection structure, the height of the unlocking protr