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CN-224217980-U - Medium voltage circuit breaker handcart execution unit box with locking mechanism

CN224217980UCN 224217980 UCN224217980 UCN 224217980UCN-224217980-U

Abstract

The utility model discloses a medium voltage circuit breaker handcart execution unit box with a locking mechanism, which is used for an electric execution mechanism of a medium voltage circuit breaker handcart, wherein the medium voltage circuit breaker handcart execution unit box with the locking mechanism comprises a box body, an execution mechanism and the locking mechanism; the box body is provided with a box door, the executing mechanism comprises a motor and a driving assembly, the driving assembly is provided with a manual connecting part, and the locking mechanism comprises a baffle assembly, a buckling block and a travel switch assembly. The utility model realizes manual operation by arranging the manual connection part for connection with an external crank, combines electric drive realized by a motor, ensures that an externally hung mechanism of the medium-voltage circuit breaker handcart can be normally used, controls the travel switch assembly to perform electric action and the manual connection part to be closed or opened by arranging the baffle assembly, and improves the use safety by arranging the clamping groove and the clamping block to cooperate to avoid the execution mechanism which breaks the five-prevention opening of the box door to perform misoperation.

Inventors

  • ZHENG WENHUI

Assignees

  • 广东集网电力有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (10)

  1. 1. The medium-voltage circuit breaker handcart execution unit box with the locking mechanism is used for an electric execution mechanism of a medium-voltage circuit breaker handcart and is characterized by comprising a box body, an execution mechanism and the locking mechanism, wherein the box body is provided with a box door, the execution mechanism is arranged in the box body, the locking mechanism is arranged between the box door and the box body, the execution mechanism comprises a motor and a driving assembly, and the driving assembly is provided with a manual connecting part.
  2. 2. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 1, wherein the locking mechanism comprises a baffle plate assembly, a buckling block and a travel switch assembly, wherein the baffle plate assembly and the travel switch assembly are arranged on the inner side of the box door, and the buckling block is arranged in the box body.
  3. 3. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 2, wherein the box door is provided with a through hole, the baffle plate assembly comprises a fixed plate and a sliding plate, the fixed plate is arranged on the inner surface of the box door, a sliding groove is arranged between the fixed plate and the box door, the sliding plate is arranged in the sliding groove, and the sliding plate can move along the sliding groove direction.
  4. 4. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 3, wherein the fixed plate is provided with a first through hole and a guide slot opening which are concentric with the through hole, the sliding plate is provided with a blocking part and a second through hole, the second through hole is arranged beside the blocking part, and the second through hole is used for being overlapped with the first through hole and the second through hole when being opened.
  5. 5. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 4, wherein the fixed plate is provided with a mounting block, the travel switch assembly is arranged on the mounting block, the travel switch assembly comprises a travel switch and a trigger rod, the travel switch is electrically connected with the motor, the trigger rod is connected with the travel switch, the trigger rod is arranged below the mounting block, the trigger rod is provided with a guide wheel, the sliding plate is further provided with a guide block, the guide block is provided with an inclined part, and the guide block is used for contacting the guide wheel when the blocking part blocks a through hole, so that the travel switch is triggered to act, and an electric on-off signal is generated, so that the motor forms a locking loop to be in an operation state.
  6. 6. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 5, wherein the guide block and the sliding plate are provided with clamping grooves which are used for being buckled with the buckling blocks when the blocking part blocks the through holes.
  7. 7. The medium voltage circuit breaker handcart execution unit box with a locking mechanism of claim 6, wherein a rectangular guard plate is arranged on the outer side of the through hole, a locking block is arranged on the rectangular guard plate, an operation part is arranged on the sliding plate, locking holes are formed in the operation part and the locking block, and the locking holes are used for the function of five-prevention locking catches.
  8. 8. The medium voltage circuit breaker handcart execution unit box with locking mechanism of claim 7, wherein a hinge assembly and a knob lock assembly are further arranged between the box door and the box body, the hinge assembly comprises a plurality of hinge shutters, and the knob lock assembly comprises a twist lock and a lock block I.
  9. 9. The medium voltage circuit breaker trolley performing unit box with the latching mechanism of claim 8 wherein the manual connection is a polygonal cylinder structure with the center of the manual connection and the center of the through hole on a concentric axis.
  10. 10. The medium voltage circuit breaker trolley execution unit box with latching mechanism of claim 9 wherein the drive assembly comprises a worm gear box, the drive assembly having an output shaft, the output shaft extending outside the box.

Description

Medium voltage circuit breaker handcart execution unit box with locking mechanism Technical Field The utility model relates to the technical field of handcart execution unit mechanism components, in particular to a handcart execution unit box of a medium-voltage circuit breaker with a locking mechanism. Background The existing power failure maintenance operation mode of the 10kV middle-set handcart switch cabinet circuit breaker in the power grid is that the circuit breaker can be remotely operated by a remote control center, after the circuit breaker is needed to be powered off by the handcart circuit breaker, an operation operator can manually withdraw the handcart circuit breaker from an operation position to a test position by using a rocking handle to a switch room site, and then the switch cabinet circuit breaker is moved out of the switch cabinet through a service trolley. In the process, the service trolley plays a role in weight, an operator needs to adjust the whole height of the service trolley and the stability of the trolley according to the height of the breaker, then the medium-voltage breaker is conveyed and moved out through the driving plug-in mechanism, wherein an execution unit box of the plug-in mechanism is used as a main driving mechanism for driving the movement of a carrier of the medium-voltage breaker, but the existing execution unit box has the following problems that a box door of the existing execution unit box is locked through a knob lock body, when an internal mechanism is not stopped, the execution mechanism of the existing execution unit box is in a motion state, and when an operator opens the box door to overhaul the internal execution mechanism, the situation that the operator is accidentally injured due to the fact that a driving shaft is in the operation state occurs, and the safety is poor. Disclosure of utility model The utility model provides a handcart execution unit box of a medium-voltage circuit breaker with a locking mechanism, aiming at overcoming the defects of the prior art, and aiming at solving the technical problem that the operation safety of the execution unit box in the prior art is poor. The technical scheme adopted by the utility model for achieving the purpose is as follows: The medium-voltage circuit breaker handcart execution unit box with the locking mechanism is used for an electric execution mechanism of a medium-voltage circuit breaker handcart and comprises a box body, an execution mechanism and the locking mechanism, wherein the box body is provided with a box door, the execution mechanism is arranged in the box body, the locking mechanism is arranged between the box door and the box body, the execution mechanism comprises a motor and a driving assembly, and the driving assembly is provided with a manual connection part. The locking mechanism comprises a baffle plate assembly, a buckling block and a travel switch assembly, wherein the baffle plate assembly and the travel switch assembly are arranged on the inner side of the box door, and the buckling block is arranged in the box body. The refrigerator door is further improved, the refrigerator door is provided with a through hole, the baffle assembly comprises a fixed plate and a sliding plate, the fixed plate is arranged on the inner surface of the refrigerator door, a sliding groove is formed between the fixed plate and the refrigerator door, the sliding plate is arranged in the sliding groove, and the sliding plate can move along the sliding groove direction. The fixing plate is further improved, the fixing plate is provided with a first through hole and a guide groove opening which are concentric with the through hole, the sliding plate is provided with a blocking part and a second through hole, the second through hole is arranged beside the blocking part, and the second through hole is used for being overlapped with the first through hole and the second through hole when being opened. The fixed plate is further improved, the fixed plate is provided with an installation block, the travel switch assembly is arranged on the installation block, the travel switch assembly comprises a travel switch and a trigger rod, the travel switch is electrically connected with the motor, the trigger rod is connected with the travel switch, the trigger rod is arranged below the installation block, the trigger rod is provided with a guide wheel, the sliding plate is further provided with a guide block, the guide block is provided with an inclined part, and the guide block is used for contacting with the guide wheel when the blocking part blocks the through hole, so that the travel switch is triggered to act, and an electric on-off signal is generated, so that the motor forms a locking loop to be in an operating state. And the guide block and the sliding plate are provided with clamping grooves, and the clamping grooves are used for being buckled with the buckling blocks when the blocking part blocks the th