一种手车式真空断路器
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAXIA TRANSMISSION & DISTRIBUTION EQUIP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-17
AI Technical Summary
The existing handcart-type vacuum circuit breaker has a simple and fixed protective cover structure, which is inconvenient to operate, easily damages the insulating components, and the connection is loose and easy to detach. Insulation gaps can easily form between multiple protective covers, posing a risk of breakdown discharge.
The protective cover adopts a swingable cover and a hook-and-loop structure, combined with a reinforced linkage bar, to achieve rapid opening and closing of the protective cover assembly, forming a continuous integral insulation barrier, avoiding threaded connections and enhancing structural rigidity.
It improves the ease of maintenance, prevents damage to insulating components, enhances insulation performance, prevents breakdown, adapts to high-frequency operation, and improves structural stability.
Smart Images
Figure CN224519785U_ABST
Abstract
Claims
1. A trolley-operated vacuum circuit breaker characterized by: The circuit breaker assembly includes an outer frame (1), stationary contact plates (2) spaced on the outer frame (1), an insulating protective cover assembly (3) covering the stationary contact plates (2), and a reinforcing linkage bar (4) connecting multiple insulating protective cover assemblies (3). The stationary contact plate (2) includes an outer part (15) and an inner lead-out part (16) formed by bending the outer part (15) in sequence and perpendicular to it. The inner end of the inner lead-out part (16) is provided with a stationary contact plate fixing hole (17), and the outer end of the inner lead-out part (16) is provided with a stationary contact plate outer connection hole (18). The insulating protective cover assembly (3) includes a protective cover base (6) and a cover cover body (7) swayably provided on the protective cover base (6). The protective cover base (6) includes a cover base body (8) and a cover cover body (7) provided on the protective cover base (6). The cover body (8) has a cover linkage part (9) at the lower end. The cover body (8) has a seat inner cavity (10). The seat inner cavity (10) has an upper partition (11) and a lower positioning plate (12). The upper partition (11) and the lower positioning plate (12) are both provided with plate limiting ports (13) for left and right positioning of the static contact plate external connection part (15). The cover body (8) has a seat outer interface (20) on the upper part of the upper partition (11) for external connection of the static contact plate external connection hole (18). The cover body (8) has a seat docking part (21) on the lower part of the upper partition (11) for mounting and docking of the cover body (7). The bottom of the cover body (8) has cover hooks (22) on both sides of the seat inner cavity (10). The cover linkage part (9) has a cover connecting post (23). The circuit breaker outer frame (1) is provided with an outer frame mating interface (25) for the installation of the inner lead-out part (16) of the stationary contact plate and an outer frame fixing part (26) for the installation and fixing of the stationary contact plate fixing hole (17). The circuit breaker outer frame (1) is provided with an outer frame bayonet (27) for the cover seat hook (22) to engage at the left and right ends of the outer frame fixing part (26). The reinforcing linkage bar (4) includes a linkage bar body (30). The linkage bar body (30) is provided with linkage bar connecting holes (31) for sleeved on the cover seat connecting column (23).
2. The trolley type vacuum circuit breaker as claimed in claim 1, wherein The cover body (7) has an inner cavity (33) inside. The outer walls of the cover body (7) are provided with cover rotating columns (34) at both ends. The seat docking part (21) is provided with a seat docking plate (38). The seat docking plate (38) is provided with a seat limiting hole (39) that is connected to the cover rotating column (34). The lower part of the inner cavity (33) of the cover body is provided with a cover hook (37). The lower part of the seat docking part (21) is provided with a seat latch (41) that is engaged with the cover hook (37).
3. The trolley type vacuum circuit breaker as claimed in claim 2, wherein: The seat docking part (21) is provided with an inner stop edge (42) for positioning the cover body (7).
4. The trolley type vacuum circuit breaker as claimed in claim 2, wherein: The inner cavity (33) of the cover is provided with a cover plate positioning plate (35) corresponding to the lower positioning plate (12), and the cover plate positioning plate (35) is provided with a cover plate positioning port (36) with the same width as the plate body limiting port (13).
5. The trolley vacuum circuit breaker of claim 1, wherein: The cover connecting column (23) is provided with a connecting column limiting groove (44) to prevent the linkage bar connecting hole (31) from falling off, and the number of the cover connecting columns (23) is 2.
6. The trolley vacuum circuit breaker of claim 1, wherein: The cover linkage part (9) is provided with a cover lower positioning protrusion (45), and the circuit breaker outer frame (1) is provided with an outer frame reinforcement positioning port (46) that is connected to the cover lower positioning protrusion (45).