Manual closing operation structure of latching circuit breaker in opening state of disconnecting switch

Abstract

The utility model relates to a manual closing operation structure of a latching circuit breaker in an opening state of an isolating switch, which comprises a switch body, a support, an interlocking crank arm, a latching rod and an operating handle, the support and the operating handle are respectively arranged on two corresponding sides of the switch body, the interlocking crank arm is rotatably arranged on the support, and the latching rod is arranged on the interlocking crank arm. A guide sleeve is installed on one side, between the support and the operation handle, of the switch body, and the locking rod is arranged in the guide sleeve in a sliding mode. According to the manual closing operation structure of the latching circuit breaker in the opening state of the disconnecting switch, when closing is needed after maintenance is completed, the interlocking crank arm is pulled to perform closing and drive the latching rod to slide along the guide sleeve so as to exit the latching hole, then the operating handle can be operated to start the switch body, and when closing is not performed, the interlocking crank arm is pulled to drive the latching rod to slide along the guide sleeve so as to drive the latching rod to move along the guide sleeve. The locking rod is arranged in the locking hole, so that the operation handle cannot swing up and down, any operation cannot be carried out when closing is not carried out, correct operation steps are ensured, and accidents are prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of isolating switch, and particularly relates to a structure for manually closing a circuit breaker under the isolating switch open state. BACKGROUND

[0002] In recent years, with the continuous development of electric power industry, a large number of electrical equipment are put into the power grid, and the maintenance of electrical equipment has become a problem that cannot be ignored, among which the maintenance of isolating switch occupies a large amount of maintenance time.

[0003] When the isolating switch needs to be maintained, the isolating switch needs to be closed, and when the isolating switch is opened after the maintenance is completed, the opening needs to be performed according to specified steps to prevent the situation from occurring when the opening is performed, and the staff will inevitably make an opening step operation error during the maintenance process due to a long working time, thereby causing damage. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model solves the technical problem of providing a structure for manually closing a circuit breaker under the isolating switch open state, which can ensure correct operation steps and prevent accidents.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a structure for manually closing a circuit breaker under the isolating switch open state, which comprises a switch body, a support, a locking crank, a locking rod and an operating handle.

[0006] One end of the locking rod is movably connected with a connecting rod, and the locking crank is provided with a connecting rod movably connected with the connecting rod.

[0007] The locking crank is further provided with a connecting plate between the locking rod and the switch body, the connecting plate is rotatably connected with a limiting rod, the switch body is provided with a limiting column, and the limiting rod is provided with a limiting groove corresponding to the position of the limiting column.

[0008] The locking crank is movably provided with an insulating pull rod, the insulating pull rod is movably provided with a knife switch, the support is provided with an insulator matched with the knife switch, one end of the knife switch is rotatably connected with the switch body, and the other end is connected with the insulator.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The structure of the utility model discloses isolating switch under the state of opening and closing the circuit breaker manual closing operation, when closing after the maintenance is completed, through pulling first pulling interlocking crank arm closing and driving locking rod along the guide sleeve to slide, thereby withdrawing the locking hole, then can operate operating handle to start switch body, when not closing, its locking rod is placed in the locking hole to make operating handle unable to swing up and down, thereby when not closing, can not operate anything, realize guaranteeing operation step correct and preventing the accident from happening. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the structure schematic diagram under the state of isolating switch of the utility model opening and closing.

[0012] Fig. 2 It is the structure schematic diagram under the state of isolating switch of the utility model closing.

[0013] Fig. 3 It is the enlarged structure schematic diagram of the utility model limit slot.

[0014] Mark in drawing: 1, switch body;2, support;3, interlocking crank arm;4, locking rod;5, operating handle;6, guide sleeve;7, locking hole;8, connecting rod;9, connecting rod;10, connecting plate;11, limit rod;12, limit slot;13, insulating pull rod;14, knife switch;15, limit column;16, insulator. DETAILED DESCRIPTION

[0015] In order to let the above-mentioned features and advantages of the utility model more obvious and easy to understand, the following specific examples are raised, and cooperate with the drawings, and are described in detail as follows.

[0016] As Figs. 1-3As shown, the embodiment provides the structure of isolating switch off state under the locking circuit breaker manual closing operation, including switch body 1, support 2, interlocking crank arm 3, locking rod 4 and operating handle 5, support 2 and operating handle 5 are installed on the corresponding two sides of switch body 1 respectively, interlocking crank arm 3 is rotatably installed on support 2, guiding sleeve 6 is installed on one side of switch body 1 between support 2 and operating handle 5, locking rod 4 is slidably arranged in guiding sleeve 6, one end of locking rod 4 is movably connected with interlocking crank arm 3, operating handle 5 is provided with locking hole 7 corresponding to one end of locking rod 4, the other end of locking rod 4 is arranged in locking hole 7 of operating handle 5. Specifically, one end of locking rod 4 is movably connected with connecting rod 8, connecting rod 9 movably connected with connecting rod 8 is arranged on interlocking crank arm 3. When closing after maintenance is completed, interlocking crank arm 3 is pulled to close and drive locking rod 4 to slide along guiding sleeve 6, so that locking hole 7 is exited, then operating handle 5 can be operated to start switch body 1, when closing is not performed, locking rod 4 is arranged in locking hole 7, so that operating handle 5 cannot swing up and down, so when closing is not performed, any operation cannot be performed, the correct operation step is ensured to prevent accidents.

[0017] Further, connecting plate 10 is arranged between locking rod 4 and switch body 1 on interlocking crank arm 3, limiting rod 11 is rotatably connected with connecting plate 10, limiting column 15 is arranged on switch body 1, limiting groove 12 is arranged on limiting rod 11 corresponding to the position of limiting column 15. Through the cooperation of limiting rod 11 and limiting groove 12, the rotation of interlocking crank arm 3 is prevented.

[0018] Further, insulating pull rod 13 is movably arranged on interlocking crank arm 3, knife switch 14 is movably arranged on insulating pull rod 13, insulator 16 matched with knife switch 14 is arranged on support 2, one end of knife switch 14 is rotatably connected with switch body 1, and the other end is connected with insulator 16. Specifically, insulator 16 is provided with isolation outgoing line connected with knife switch 14. By rotating interlocking crank arm 3, knife switch 14 is driven to close by insulating pull rod 13.

[0019] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A structure for blocking manual closing operation of the circuit breaker when the disconnector is in the open state, characterized in that: The switch includes a switch body, a bracket, a chain crank arm, a locking rod, and an operating handle. The bracket and the operating handle are respectively installed on corresponding sides of the switch body. The chain crank arm is rotatably installed on the bracket. A guide sleeve is installed on one side of the switch body between the bracket and the operating handle. The locking rod is slidably placed in the guide sleeve. One end of the locking rod is movably connected to the chain crank arm. The operating handle has a locking hole at one end corresponding to the locking rod, and the other end of the locking rod is placed in the locking hole of the operating handle.

2. The structure for blocking manual closing operation of the circuit breaker under the open state of the disconnecting switch as described in claim 1, characterized in that: One end of the locking rod is movably connected to a connecting rod, and the interlocking crank arm is provided with a connecting rod that is movably connected to the connecting rod.

3. The structure for blocking manual closing operation of the circuit breaker in the open state of the disconnecting switch as described in claim 1, characterized in that: The interlocking crank arm is provided with a connecting plate between the locking rod and the switch body. A limit rod is rotatably connected to the connecting plate. A limit post is provided on the switch body. A limit groove is provided on the limit rod at the position corresponding to the limit post.

4. The structure for blocking manual closing operation of the circuit breaker under the open state of the disconnecting switch as described in claim 1, characterized in that: An insulating pull rod is movably mounted on the interlocking crank arm, and a knife switch is movably mounted on the insulating pull rod. An insulator that cooperates with the knife switch is provided on the bracket. One end of the knife switch is rotatably connected to the switch body, and the other end is locked to the insulator.

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