Operating mechanism for direct-current circuit breaker

Abstract

The utility model relates to the technical field of direct-current circuit breakers, and discloses an operating mechanism for a direct-current circuit breaker, which comprises a direct-current circuit breaker, two sides of the direct-current circuit breaker are fixedly connected with mounting plates through bolts, the top of each mounting plate is fixedly connected with an operating box, the inside of the operating box is rotatably connected with a rotating part, and the rotating part is fixedly connected with the direct-current circuit breaker through bolts. The top of the operation box is fixedly connected with a rotating piece, the top of the rotating piece is fixedly connected with a rotating handle, the top of the operation box is fixedly connected with a supporting frame, a rotating block is hinged to the interior of the supporting frame, and one side of the rotating block is fixedly connected with a protective cover. And meanwhile, the protection cover drives the mounting block to extrude the limiting block to retract into the mounting box, then the mounting box is inserted into a groove in the mounting block, limiting of the protection cover through the mounting block is completed, protection of the rotating handle is completed, protection of the rotating handle is achieved, the rotating handle is prevented from being collided by others by mistake, and protection of the control mechanism is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of DC circuit breakers, and more specifically, to an operating mechanism for a DC circuit breaker. Background Art

[0002] DC circuit breaker and on-load voltage regulation both refer to the voltage regulation method of transformer tap changer. The difference is that the off-excitation voltage regulator does not have the ability to switch gears with load, because this type of tap changer has a short disconnection process during the gear switching process. Disconnecting the load current will cause arcing between the contacts, burning the tap changer or short-circuiting. Therefore, the transformer must be powered off when switching gears.

[0003] The circuit breaker in the prior art is usually provided with an opening and closing handle exposed from the circuit breaker housing. When controlling the opening and closing of the circuit breaker, it is usually achieved by moving the opening and closing handle thereon back and forth. However, the opening and closing handle is exposed to the outside and lacks protection. When the staff touches it by mistake, it causes the circuit breaker to be closed, thereby cutting off the power in the circuit. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides an operating mechanism for a DC circuit breaker.

[0005] The utility model provides an operating mechanism for a DC circuit breaker adopts the following technical solution:

[0006] An operating mechanism for a DC circuit breaker comprises a DC circuit breaker, wherein both sides of the DC circuit breaker are fixedly connected with mounting plates by bolts, the top of the mounting plate is fixedly connected with an operating box, the inside of the operating box is rotatably connected with a rotating member, the top of the rotating member is fixedly connected with a rotating handle, the top of the operating box is fixedly connected with a supporting frame, the inside of the supporting frame is hinged with a rotating block, one side of the rotating block is fixedly connected with a protective cover, both sides of the protective cover are fixedly connected with mounting blocks, a limiting mechanism is installed inside the mounting block, and the mounting block is fixed by the limiting mechanism.

[0007] Preferably, the gear on the rotating part and a plurality of tooth holes arranged at equal intervals on the sliding part and capable of meshing with the gear, through the meshing cooperation of the gear and the corresponding tooth holes, enable the rotational movement of the rotating part relative to the operating box to be converted into a linear reciprocating sliding movement of the sliding part relative to the operating box, and the sliding part is provided with a switch opening and closing handle for the circuit breaker.

[0008] Preferably, the limiting mechanism includes an installation box installed on the operating box, the installation box is internally slidably connected with a pull rod, the pull rod passes through one end of the installation box and is fixedly connected with a handle, the other end of the pull rod is fixedly connected to a limiting block, and the limiting block is internally slidably connected to the installation box, one side of the limiting block is fixedly connected with a return spring, and the other end of the return spring is fixedly connected to the inside of the installation box, and the limiting block is inserted into the installation block.

[0009] Preferably, the limiting block is triangular in shape, and the protective cover is made of insulating material.

[0010] Preferably, a groove for inserting the limiting block is provided inside the mounting block.

[0011] In summary, the utility model includes the following beneficial technical effects:

[0012] The utility model covers the rotating handle in the protective cover, and at the same time the protective cover drives the installation block to squeeze the limit block into the installation box, and then the installation box is inserted into the groove in the installation block, so that the installation block limits the protective cover and protects the rotating handle, thereby realizing the protection of the rotating handle, preventing others from accidentally colliding with the rotating handle, and providing protection for the control mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front three-dimensional structure in an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the operation box in the embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the rear structure of the operating box in the embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the protective cover opening structure in the embodiment of the utility model;

[0017] Figure 5 It is a schematic diagram of the internal structure of the installation box in the embodiment of the utility model.

[0018] Explanation of the accompanying drawings: 1. DC circuit breaker; 2. Mounting plate; 3. Operating box; 4. Rotating part; 5. Rotating handle; 6. Support frame; 7. Rotating block; 8. Protective cover; 9. Mounting block; 10. Limit block; 11. Reset spring; 12. Mounting box; 13. Pull rod; 14. Handle. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 The utility model is described in further detail.

[0020] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0021] The utility model discloses an operating mechanism for a DC circuit breaker. Figure 1-5 , an operating mechanism for a DC circuit breaker, comprising a DC circuit breaker 1, both sides of the DC circuit breaker 1 are fixedly connected with a mounting plate 2 by bolts, the top of the mounting plate 2 is fixedly connected with an operating box 3, the inside of the operating box 3 is rotatably connected with a rotating member 4, a gear on the rotating member 4 and a plurality of tooth holes arranged at equal intervals on a sliding member and capable of meshing with the gears, through the meshing of the gears with the corresponding tooth holes, the rotational movement of the rotating member 4 relative to the operating box 3 can be converted into a linear reciprocating sliding movement of the sliding member relative to the operating box 3, and the sliding member is provided with a switch-on and switch-off handle for the circuit breaker;

[0022] Reference Figure 1-4 A rotating handle 5 is fixedly connected to the top of the rotating member 4, a supporting frame 6 is fixedly connected to the top of the operating box 3, a rotating block 7 is hinged inside the supporting frame 6, a protective cover 8 is fixedly connected to one side of the rotating block 7, and the material of the protective cover 8 is an insulating material to prevent the protective cover 8 from being electrically connected to the DC circuit breaker 1, thereby increasing the safety of the staff at work, and mounting blocks 9 are fixedly connected to both sides of the protective cover 8, and a limiting mechanism is installed inside the mounting block 9;

[0023] Reference Figure 1 , 2 , 4, 5, the limiting mechanism includes an installation box 12 installed on the operation box 3, the installation box 12 is internally slidably connected with a pull rod 13, the pull rod 13 passes through one end of the installation box 12 and is fixedly connected with a handle 14, the other end of the pull rod 13 is fixedly connected with a limiting block 10, the limiting block 10 is triangular in shape, the installation block 9 is provided with a groove for inserting the limiting block 10, and the limiting block 10 is slidably connected with the inside of the installation box 12, one side of the limiting block 10 is fixedly connected with a reset spring 11, and the other end of the reset spring 11 is fixedly connected with the inside of the installation box 12, and the limiting block 10 is inserted into the installation block 9;

[0024] Specifically, a support frame 6 is installed on the operation box 3, a rotating block 7 is hinged on the support frame 6, and a protective cover 8 is installed on the rotating block 7. The protective cover 8 covers the surface of the rotating handle 5, and at the same time, the protective cover 8 drives the installation block 9 to squeeze the limit block 10 into the installation box 12 and compress the installation box 12. Then, when the installation box 12 is aligned with the groove in the installation block 9, the compressed return spring 11 pushes the installation box 12 to be inserted into the groove, so that the protective cover 8 is limited by the installation block 9, and the protection of the rotating handle 5 is completed at the same time;

[0025] Through the above structural design, the rotating handle 5 is protected, so as to prevent others from accidentally colliding with the rotating handle 5 and provide protection for the control mechanism.

[0026] Finally, a few points should be explained: First, in the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An operating mechanism for a DC circuit breaker, comprising a DC circuit breaker (1), characterized in that: Both sides of the DC circuit breaker (1) are fixedly connected to a mounting plate (2) by bolts, the top of the mounting plate (2) is fixedly connected to an operating box (3), the inside of the operating box (3) is rotatably connected to a rotating member (4), the top of the rotating member (4) is fixedly connected to a rotating handle (5), the top of the operating box (3) is fixedly connected to a support frame (6), the inside of the support frame (6) is hinged with a rotating block (7), one side of the rotating block (7) is fixedly connected to a protective cover (8), the two sides of the protective cover (8) are fixedly connected to mounting blocks (9), a limiting mechanism is installed inside the mounting block (9), and the mounting block (9) is fixed by the limiting mechanism.

2. The operating mechanism for a DC circuit breaker according to claim 1, characterized in that: The gear on the rotating member (4) and a plurality of tooth holes arranged at equal intervals on the sliding member and capable of meshing with the gear, through the meshing of the gear with the corresponding tooth holes, enable the rotational movement of the rotating member (4) relative to the operating box (3) to be converted into a linear reciprocating sliding movement of the sliding member relative to the operating box (3), and the sliding member is provided with an opening and closing handle for the circuit breaker.

3. The operating mechanism for a DC circuit breaker according to claim 1, characterized in that: The limiting mechanism comprises an installation box (12) installed on the operating box (3); the installation box (12) is internally slidably connected with a pull rod (13); one end of the pull rod (13) passes through the installation box (12) and is fixedly connected with a handle (14); the other end of the pull rod (13) is fixedly connected with a limiting block (10), and the limiting block (10) is internally slidably connected with the installation box (12); one side of the limiting block (10) is fixedly connected with a return spring (11), and the other end of the return spring (11) is fixedly connected with the inside of the installation box (12); the limiting block (10) is inserted into the installation block (9).

4. The operating mechanism for a DC circuit breaker according to claim 3, characterized in that: The limiting block (10) is in the shape of a triangle, and the material used for the protective cover (8) is an insulating material.

5. The operating mechanism for a DC circuit breaker according to claim 3, characterized in that: The interior of the installation block (9) is provided with a groove for inserting the limiting block (10).

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