Low voltage switchgear with power-off protection mechanism

Abstract

The utility model discloses a low -voltage switchgear with power -off protection mechanism, including the cabinet and push assembly, the cabinet opening side hinged has the cabinet door, and the cabinet door side away from the hinge point is fixedly connected with fixed block, and the cabinet outside is fixedly connected with the protective cover, and the protective cover inside is equipped with push assembly, and push assembly one side stretches into the cabinet inside, and the fixed connection of circuit breaker is established on the cabinet inner wall, and the circuit breaker switch is corresponding with push assembly, the operation panel is equipped with one side of the protective cover, and the operation panel outside is fixedly connected with the limit stop, the utility model discloses the linkage mechanism of setting push assembly and circuit breaker switch, ensure first through the operation panel drive worm, worm wheel and carousel rotation before opening the cabinet door, and then make the push plate push circuit breaker switch and open, realize the automatic cut -off of circuit, fundamentally eliminate the risk of opening the cabinet door because of personnel negligence or misoperation and not open circuit breaker, improve the security of operation.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, and specifically to a low-voltage switchgear with a power failure protection mechanism. Background Technology

[0002] As an indispensable integrated electrical device in power systems, low-voltage switchgear's core function is to efficiently and safely distribute and control low-voltage electrical energy. This equipment integrates multiple low-voltage switchgear devices and is equipped with advanced control, measurement, and protection components, assembled into a compact and fully functional unit through structural components.

[0003] In the internal structure of low-voltage switchgear, the circuit breaker plays a crucial role as a core protective component. When the circuit encounters abnormal conditions such as overload, short circuit, or undervoltage, the circuit breaker can quickly and automatically disconnect the circuit, effectively preventing damage to wires and electrical equipment due to overload current or short circuit faults, thereby ensuring the safety and reliability of the entire power system.

[0004] During routine maintenance of low-voltage switchgear, standard operating procedures typically require personnel to first trip the circuit breaker using the operating switch to disconnect the power supply and ensure the safety of maintenance work. However, significant risks remain in practice. Due to human negligence, fatigue, or lack of experience, maintenance personnel may open the cabinet door to perform maintenance work without first tripping the circuit breaker. This misoperation can easily lead to electric shock accidents, posing a serious threat to personnel safety and causing irreversible damage to the low-voltage switchgear and its internal equipment. Utility Model Content

[0005] The purpose of this invention is to provide a low-voltage switchgear with a power failure protection mechanism to solve safety problems caused by misoperation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage switchgear with a power failure protection mechanism, comprising a cabinet and a push assembly.

[0007] The cabinet has a door hinged to the open side, and a fixing block is fixedly connected to the side of the door away from the hinge point. A protective cover is fixedly connected to the outside of the cabinet, and a pushing component is installed inside the protective cover. One side of the pushing component extends into the cabinet. A circuit breaker is fixedly connected to the inner wall of the cabinet, and the circuit breaker switch corresponds to the pushing component.

[0008] An operating panel is provided on one side of the protective cover. A limit block is fixedly connected to the outside of the operating panel. The end of the limit block away from the operating panel is movably inserted into the fixed block to restrict the opening of the cabinet door.

[0009] The actuating assembly includes a rotating rod, a turntable, a push plate, an opening, a worm gear, and a worm. The worm is rotatably connected inside the protective cover, and one end of the worm is fixedly connected to the operating panel. The worm gear meshes with the worm, and the worm gear is fixedly connected to the turntable via a rotating rod. The rotating rod is rotatably connected to the cabinet via a bearing. The turntable is located inside the cabinet, and a push plate is fixedly connected to the outside of the turntable. An opening is provided on one side of the push plate, which is fitted around the circuit breaker switch to control the closing and opening of the circuit breaker.

[0010] As a preferred embodiment of this utility model, the fixing block is designed in an "L" shape, and the limiting block is adapted to the fixing block.

[0011] As a preferred embodiment of this utility model, the opening length is greater than the circuit breaker switch length.

[0012] As a preferred embodiment of this utility model, an operating block is vertically fixed at the upper end of the operating panel.

[0013] As a preferred embodiment of this utility model, a limiting component is provided on the outside of the cabinet door. The limiting component includes a limiting plate, a mounting block, a limiting groove, a connecting rod, a spring, and a top block. The mounting block is fixed on the outside of the cabinet door. The connecting rod is movably sleeved with the mounting block. The bottom end of the connecting rod is fixedly connected to the limiting plate. The bottom end of the limiting plate is provided with a limiting groove that matches the operating block. The upper end of the operating block is movably inserted into the limiting groove. The top end of the connecting rod is fixedly connected to the top block. A spring is fixedly connected between the top block and the mounting block. The spring is sleeved around the outside of the connecting rod.

[0014] Compared with existing technologies, the low-voltage switchgear with a power failure protection mechanism provided by this utility model has the following advantages:

[0015] This invention establishes a linkage mechanism between the push assembly and the circuit breaker switch, ensuring that the worm gear, worm wheel, and turntable rotate via the operating panel before the cabinet door is opened. This, in turn, causes the push plate to push the circuit breaker switch to trip, achieving automatic circuit disconnection. This fundamentally eliminates the risk of maintenance personnel opening the cabinet door without tripping the circuit breaker due to negligence or misoperation, thus improving operational safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a schematic diagram of the limiting component structure in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the push plate and the circuit breaker in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the pushing component structure in an embodiment of this utility model.

[0022] Reference numerals in the attached diagram: 1. Cabinet body; 2. Cabinet door; 3. Protective cover; 4. Circuit breaker; 5. Fixing block; 6. Limiting block; 7. Control panel; 8. Limiting assembly; 81. Mounting block; 82. Limiting plate; 83. Limiting groove; 84. Connecting rod; 85. Spring; 86. Top block; 9. Pushing assembly; 91. Rotating rod; 92. Turntable; 93. Push plate; 94. Opening; 95. Worm gear; 96. Worm; 10. Control block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0026] See Figure 1-5As shown, the low-voltage switchgear with a power failure protection mechanism in this embodiment of the utility model includes a cabinet body 1 and a push assembly 9; a cabinet door 2 is hinged to the open side of the cabinet body 1, and a fixing block 5 is fixedly connected to the side of the cabinet door 2 away from the hinge point; a protective cover 3 is fixedly connected to the outside of the cabinet body 1, and a push assembly 9 is provided inside the protective cover 3; one side of the push assembly 9 extends into the inside of the cabinet body 1; a circuit breaker 4 is fixedly connected to the inner wall of the cabinet body 1, and the circuit breaker 4 switch corresponds to the push assembly 9; an operating panel 7 is provided on one side of the protective cover 3, and a limit block 6 is fixedly connected to the outside of the operating panel 7; the end of the limit block 6 away from the operating panel 7 is movably inserted into the fixing block 5 to restrict the opening of the cabinet door 2.

[0027] The actuating assembly 9 includes a rotating rod 91, a turntable 92, a push plate 93, an opening 94, a worm gear 95, and a worm 96. The worm 96 is rotatably connected inside the protective cover 3, and one end of the worm 96 is fixedly connected to the operating panel 7. The worm gear 95 meshes with the worm 96, and the worm gear 95 is fixedly connected to the turntable 92 via the rotating rod 91. The rotating rod 91 is rotatably connected to the cabinet 1 via a bearing. The turntable 92 is located inside the cabinet 1, and the push plate 93 is fixedly connected to the outside of the turntable 92. An opening 94 is provided on one side of the push plate 93. The opening 94 is fitted around the circuit breaker 4 switch to control the closing and opening of the circuit breaker 4. The operating panel 7 drives the worm 96, worm gear 95, and turntable 92 to rotate, thereby causing the push plate 93 to push the circuit breaker 4 switch to open, realizing the automatic disconnection of the circuit.

[0028] The fixing block 5 is set in an "L" shape, and the limiting block 6 is adapted to the fixing block 5. The opening of the cabinet door 2 is restricted by the engagement of the limiting block 6 and the fixing block 5.

[0029] The length of opening 94 is greater than the length of circuit breaker 4 switch, ensuring that when push plate 93 rotates along turntable 92, circuit breaker 4 switch is always located inside opening 94.

[0030] An operating block 10 is vertically fixed to the upper end of the operating panel 7, which facilitates maintenance personnel to rotate the operating panel 7.

[0031] In use, push the operating block 10, which drives the operating panel 7 to rotate. When the operating panel 7 rotates, it drives the meshing worm gear 95 to rotate synchronously through the worm 96. The worm gear 95 drives the turntable 92 to rotate synchronously through the rotating rod 91. The turntable 92 then drives the push plate 93 to rotate clockwise. Since the opening 94 on the push plate 93 is located outside the circuit breaker 4 switch, the push plate 93 will trip the circuit breaker 4 when it rotates, thereby automatically cutting off the circuit. Opening the cabinet door 2 and disconnecting the circuit breaker 4 are completed together, preventing the risk of maintenance personnel opening the cabinet door 2 without tripping the circuit breaker 4 due to negligence or misoperation, and greatly improving the safety of operation.

[0032] A limiting component 8 is also provided on the outside of the cabinet door 2. The limiting component 8 includes a limiting plate 82, a mounting block 81, a limiting groove 83, a connecting rod 84, a spring 85, and a top block 86. The mounting block 81 is fixed on the outside of the cabinet door 2. The connecting rod 84 is movably sleeved with the mounting block 81. The bottom end of the connecting rod 84 is fixedly connected to the limiting plate 82. The bottom end of the limiting plate 82 is provided with a limiting groove 83 that matches the operating block 10. The upper end of the operating block 10 is movably inserted into the limiting groove 83. The top end of the connecting rod 84 is fixedly connected to the top block 84. A spring 85 is fixedly connected between the top block 86 and the mounting block 81. The spring 85 is sleeved around the connecting rod 84. By moving the upper end of the operating block 10 into the limiting groove 83 at the bottom end of the mounting block 81, the operating block 10 and the operating panel 7 are restricted, preventing accidental contact and rotation of the operating panel 7.

[0033] In use, pull the top block 86 upward. The top block 86 drives the mounting block 81 upward through the connecting rod 84 and also stretches the spring 85 simultaneously. When the limiting groove 83 at the bottom of the mounting block 81 is completely separated from the operating block 10, the operating panel 7 can be rotated through the operating block 10. When the circuit breaker 4 is closed again, the operating block 10 will return to a vertical position. Release the top block 86, and the mounting block 81 will move downward through the restoring force of the spring 85, so that the upper end of the operating block 10 is reinserted into the limiting groove 83, thereby restricting the operating block 10 and the operating panel 7 and preventing accidental contact with the operating panel 7 to cause it to rotate.

[0034] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-voltage switchgear with a power failure protection mechanism, characterized in that: Includes cabinet (1) and push assembly (9); The cabinet (1) has a door (2) hinged to the open side. A fixing block (5) is fixedly connected to the side of the door (2) away from the hinge point. A protective cover (3) is fixedly connected to the outside of the cabinet (1). A pushing component (9) is provided inside the protective cover (3). One side of the pushing component (9) extends into the cabinet (1). A circuit breaker (4) is fixedly connected to the inner wall of the cabinet (1). The circuit breaker (4) switch corresponds to the pushing component (9). The protective cover (3) has an operating panel (7) on one side. A limiting block (6) is fixedly connected to the outside of the operating panel (7). The end of the limiting block (6) away from the operating panel (7) is movably inserted into the fixed block (5). The pushing assembly (9) includes a rotating rod (91), a turntable (92), a push plate (93), an opening (94), a worm gear (95), and a worm (96). The worm (96) is rotatably connected inside the protective cover (3). One end of the worm (96) is fixedly connected to the operating panel (7). The worm gear (95) meshes with the worm (96). The worm gear (95) is fixedly connected to the turntable (92) through the rotating rod (91). The rotating rod (91) is rotatably connected to the cabinet (1) through a bearing. The turntable (92) is located inside the cabinet (1). The push plate (93) is fixedly connected to the outside of the turntable (92). An opening (94) is provided on one side of the push plate (93). The opening (94) is sleeved around the circuit breaker (4) switch.

2. The low-voltage switchgear with a power failure protection mechanism according to claim 1, characterized in that: The fixing block (5) is set in an "L" shape, and the limiting block (6) is adapted to the fixing block (5).

3. The low-voltage switchgear with a power failure protection mechanism according to claim 1, characterized in that: The length of the opening (94) is greater than the length of the circuit breaker (4).

4. The low-voltage switchgear with a power failure protection mechanism according to claim 1, characterized in that: An operating block (10) is vertically fixed at the upper end of the operating panel (7).

5. The low-voltage switchgear with a power failure protection mechanism according to claim 1, characterized in that: The cabinet door (2) is provided with a limiting component (8) on the outside. The limiting component (8) includes a limiting plate (82), a mounting block (81), a limiting groove (83), a connecting rod (84), a spring (85), and a top block (86). The mounting block (81) is fixed on the outside of the cabinet door (2). The connecting rod (84) is movably connected to the mounting block (81). The bottom end of the connecting rod (84) is fixedly connected to the limiting plate (82). The bottom end of the limiting plate (82) is provided with a limiting groove (83) that is adapted to the operating block (10). The upper end of the operating block (10) is movably inserted into the limiting groove (83). The top end of the connecting rod (84) is fixedly connected to the top block (86). The top block (86) and the mounting block (81) are fixedly connected to the spring (85). The spring (85) is sleeved around the connecting rod (84).

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