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CN-224233201-U - Position locking device for removable switch cabinet and removable switch cabinet with same

CN224233201UCN 224233201 UCN224233201 UCN 224233201UCN-224233201-U

Abstract

A station locking apparatus for a withdrawable switchgear includes a latch assembly including a latch body fixed to a side plate of the switchgear body and extending from an outer side to an inner side of the side plate of the switchgear body and a latch core extending from an inner side end of the latch body, the latch core being configured to be rotatable with respect to the latch body, a driving cam mounted to the latch core and configured to be rotatable following rotation of the latch core, and a sliding lever slidably disposed at the inner side of the side plate of the switchgear body and having one end abutted against the driving cam, so that the driving cam can push the sliding lever to move toward the movable portion until a moving path of the sliding lever to the movable portion prevents the movable plate from moving to expose the operation hole when the latch core rotates with respect to the latch body in response to a locking action.

Inventors

  • ZHU DONGHUI
  • ZHENG RONG
  • CHEN JIANHUA
  • WANG FUMING
  • Guang Ziqiang

Assignees

  • 伊顿电气有限公司

Dates

Publication Date
20260512
Application Date
20250327

Claims (10)

  1. 1. A station locking device (10) for a withdrawable switchgear, the withdrawable switchgear comprising a cabinet body side plate (20) provided with an operation hole therein and a movable portion (30) disposed inside the cabinet body side plate (20) to block the operation hole, the movable portion (30) being configured to be movable relative to the cabinet body side plate (20) to expose the operation hole, characterized in that the station locking device (10) comprises: A latch assembly (11) including a latch main body (111) fixed to the cabinet side plate (20) and extending from an outside to an inside of the cabinet side plate (20), and a latch core (112) extending from an inside end of the latch main body (111), the latch core (112) being configured to be rotatable with respect to the latch main body (111); A drive cam (12) mounted to the latch core (112) and configured to be rotatable following rotation of the latch core (112); A slide lever (13) slidably disposed inside the cabinet side plate (20) with one end abutting against the transmission cam (12) so that, when the latch core (112) rotates relative to the latch main body (111) in response to a locking action, the transmission cam (12) can push the slide lever (13) to move toward the movable portion (30) until the slide lever (13) moves to a movement path of the movable portion (30) to prevent the movable plate from moving to expose the operation hole.
  2. 2. The station locking device (10) for a withdrawable switchgear according to claim 1, further comprising a removable part arranged inside the cabinet side plate (20) and movable to different stations with respect to the cabinet side plate (20), wherein the station locking device (10) further comprises: A stopper rod (14) movably mounted to an inner side of the cabinet side plate (20) and capable of moving to different stations following the movable member, the stopper rod (14) being configured to be located in a moving path of the slide rod (13) while moving to a desired station, thereby preventing the slide rod (13) from moving to a moving path of the movable portion (30).
  3. 3. The station locking apparatus (10) for a mobile switching cabinet of claim 1, wherein the station locking apparatus (10) further comprises: A pair of support plates fixedly mounted to the inside of the cabinet side plate (20) and arranged at intervals with respect to each other in the sliding direction of the slide rod (13), and each of the support plates is provided with a guide hole penetrating in the thickness direction to be penetrated by the slide rod (13).
  4. 4. A station locking device (10) for a mobile switching cabinet according to claim 3, characterized in that the sliding bar (13) is divided in its sliding direction into a driving section (131) adjacent to the transmission cam (12) and a functional section (132) adjacent to the movable section (30), the outer contour of the functional section (132) being reduced with respect to the outer contour of the driving section (131).
  5. 5. The station locking apparatus (10) for a mobile switching cabinet of claim 4, wherein the station locking apparatus (10) further comprises: An elastic member (16) which is sleeved to the driving section (131) of the slide bar (13) and is disposed between the driving section (131) of the slide bar (13) and the support plate adjacent to the movable portion (30) so that the slide bar (13) moves to a movement path of the movable portion (30) against the force of the elastic member (16).
  6. 6. The station locking device (10) for a withdrawable switchgear according to claim 1, characterized in that said transmission cam (12) comprises a base circle portion (121) provided with a mounting hole therein for a socket connection to said latch core (112) and a lift portion (122) extending radially outwards from said base circle portion (121) and axially towards said latch body (111).
  7. 7. The station locking device (10) for a withdrawable switchgear according to claim 6, characterized in that the end of the sliding rod (13) adjacent to the transmission cam (12) is designed with an engagement curved surface (13 b) against a base circle portion (121) of the transmission cam (12) and an engagement plane against a lift portion (122) of the transmission cam (12), wherein the lift portion (122) is disengaged from the engagement plane and is against the engagement curved surface (13 b) with rotation of the transmission cam (12).
  8. 8. The station locking device (10) for a withdrawable switchgear according to claim 2, characterized in that the limit lever (14) is configured to be located in the movement path of the sliding lever (13) while being moved to the connection position.
  9. 9. The workstation locking device (10) for a pull-away switchgear as claimed in claim 8, wherein the limit lever (14) is configured to allow the sliding lever (13) to move to a movement path of the movable portion (30) when moved to an isolation position or a testing position.
  10. 10. A withdrawable switchgear comprising a cabinet body side plate (20) provided with an operation hole thereon and a movable portion (30) disposed inside the cabinet body side plate (20) to block the operation hole, the movable portion (30) being configured to be movable relative to the cabinet body side plate (20) to expose the operation hole, characterized in that the withdrawable switchgear further comprises a station locking device (10) according to any one of claims 1 to 9.

Description

Position locking device for removable switch cabinet and removable switch cabinet with same Technical Field The utility model relates to the technical field of electrical equipment, in particular to a work position locking device for a movable type switch cabinet and the movable type switch cabinet with the same. Background The movable switch cabinet such as a drawer type switch cabinet or a handcart type switch cabinet is widely applied to a power system by virtue of the advantages of convenience in maintenance, reliable power supply and the like, so as to perform short-circuit protection, overload protection and circuit on-off control on the power system. Such switch cabinets typically include a cabinet, an operating mechanism mounted within the cabinet, and a removable component, wherein an operator may move the removable component relative to the cabinet by controlling the operating mechanism to switch the removable component to an isolated, test, or connected position. However, prior art switch cabinets still present a risk of displacement after the removable component has been moved into position relative to the cabinet body, for example under operator mishandling, which in turn can adversely affect the safety of the switch cabinet. Accordingly, there is a need in the art for a station locking apparatus that improves the reliability and safety of a switchgear. Disclosure of utility model The present utility model aims to provide a station locking arrangement which solves at least some of the problems described above. The utility model also aims to provide a removable switch cabinet applying the improved station locking device. According to one aspect of the present utility model, there is provided a station locking device for a withdrawable switchgear including a cabinet side plate having an operation hole provided thereon and a movable portion disposed inside the cabinet side plate to block the operation hole, the movable portion being configured to be movable relative to the cabinet side plate to expose the operation hole, the station locking device including a latch assembly including a latch body fixed to the cabinet side plate and extending from an outside to an inside of the cabinet side plate and a latch core extending from an inside end of the latch body, the latch core being configured to be rotatable relative to the latch body, a transmission cam mounted to the latch core and configured to be rotatable following rotation of the latch core, a slide lever slidably disposed inside the cabinet side plate and having one end abutting against the transmission cam to be movable toward the movable portion until the slide lever moves to a movement path of the movable portion to block movement of the movable portion to expose the operation hole when the latch core rotates relative to the latch body in response to a locking action. Compared with the prior art, the station locking device is matched with the movable part for shielding and exposing the operation hole, so that when the movable switch cabinet moves to any expected station, the lock catch assembly drives the sliding rod to move to the moving path of the movable part through the transmission cam, thereby limiting the movement of the movable part, further keeping the shielding state of the operation hole and preventing the operation handle from being inserted into the operation hole, and further avoiding misoperation of an operator and operation of an unauthorized operator as much as possible. In addition, the rotation of the transmission cam is converted into the linear movement of the sliding rod, so that the structure is simple and the space is saved. Preferably, the withdrawable switchgear further comprises a removable part disposed inside the cabinet side plate and movable to a different station with respect to the cabinet side plate, and the station locking apparatus further comprises a stopper rod movably mounted to the inside of the cabinet side plate and movable to a different station following the removable part, the stopper rod being configured to be positioned in a movement path of the sliding rod while being moved to a desired station, thereby preventing the sliding rod from being moved to a movement path of the movable part. Preferably, the station locking apparatus further comprises a pair of support plates fixedly mounted to the inner side of the cabinet side plate and spaced apart from each other in a sliding direction of the slide bar, and each support plate is provided with a guide hole penetrating in a thickness direction to be penetrated by the slide bar. Preferably, the sliding rod is divided in its sliding direction into a drive section adjacent to the transmission cam and a functional section adjacent to the movable section, the outer contour of the functional section being reduced relative to the outer contour of the drive section. Preferably, the station locking apparatus further comprises an elastic member which is co