Maintenance structure of switch cabinet

Abstract

The utility model belongs to the technical field of switch cabinets, and particularly relates to a maintenance structure of a switch cabinet, which comprises a cabinet body, a fixing frame is arranged on the inner wall of a bent plate frame on one side in the cabinet body and used for fixing an insulator fixing vertical beam, a first maintenance plate and a second maintenance plate, and the insulator fixing vertical beam is assembled through a specially designed fixing assembly. The fixing assembly comprises a front end and a rear end, the front end is provided with a U-shaped abutting lug and a connecting plate, the rear end is provided with a clamping plate and a V-shaped clamping block, and a positioning pin, an operation panel and a spring on the connecting plate work cooperatively and are matched with through holes in the fixing frame and the insulator fixing vertical beam to achieve positioning. The novel switch cabinet is simple in structure and convenient to use, can be quickly disassembled during overhaul and maintenance, greatly improves the operation and maintenance efficiency of a power system, expands the overhaul space by dividing the fixed frame into a left overhaul port and a right overhaul port through the insulator fixing vertical beam, facilitates the operation of internal elements and buses by workers, and remarkably improves the maintainability of the switch cabinet in special scenes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of switch cabinet, specifically a kind of switch cabinet's overhauling structure. BACKGROUND

[0002] The indoor high-voltage switch cabinet is of metal armored movable structure, has good electrical insulation and mechanical properties, adopts middle-mounted handcart type design, facilitates overhauling and maintenance, has perfect "five-prevention" function, and is widely used in power system and medium-voltage distribution network of various industrial and mining enterprises.

[0003] The existing switch cabinet is mainly composed of the following parts: cabinet body, circuit breaker handcart, bus, current transformer, voltage transformer, disconnecting switch, grounding switch, lightning arrester, control and protection device, etc., and the working principle is: the control and protection device is used to monitor and control the circuit, and when the circuit fails, the protection device will send a signal to trip the circuit breaker, cut off the fault circuit, the bus is used to transmit electric energy, the current transformer and voltage transformer are used to measure the current and voltage in the circuit, the disconnecting switch and grounding switch are used to isolate the power supply and grounding protection, and the lightning arrester is used to prevent lightning overvoltage, so as to realize the control, protection and monitoring of the power system.

[0004] The existing switch cabinet in the prior art has the following disadvantages: when installing key components such as insulator fixed vertical beams in the conventional switch cabinet overhauling structure, the maintenance personnel often need to use screwdrivers, wrenches and other tools to complete multiple operation steps, which affects the installation efficiency of the switch cabinet, and more disadvantageously, when the switch cabinet needs to be overhauled and maintained, the maintenance personnel need to repeat the cumbersome steps during installation and operate in reverse to remove the fixed connection between the components, which restricts the operation and maintenance efficiency of the power system; and most of the existing switch cabinets have obvious design defects, the rear maintenance hole of the cabinet is generally small, and this problem is particularly prominent in special application scenarios such as mine and box transformer pre-cabin, the space in these places is very small, and when installing the fixed bus behind the cabinet and carrying out daily overhauling and maintenance work, the narrow maintenance hole makes it difficult for workers to put tools and hands into the cabinet to operate, which greatly limits the development of overhauling work; therefore, a switch cabinet overhauling structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the existing switch cabinet, a switch cabinet overhauling structure is proposed.

[0006] The utility model discloses a technical scheme that solves its technical problem is adopted: the utility model discloses a kind of overhauling structure of switch cabinet, including cabinet, the inside one side of cabinet is fixedly assembled with bent plate frame, the inner wall of bent plate frame is fixedly provided with the fixed frame for fixing insulator fixed vertical beam, first maintenance plate, second maintenance plate, first maintenance plate and second maintenance plate are respectively located at the two sides of insulator fixed vertical beam, and the insulator fixed vertical beam is fixedly assembled by fixed component.

[0007] Preferably, the fixed component includes a front end and a rear end, the front end includes two oppositely arranged U-shaped abutting ears, a connecting plate is fixedly arranged between the U-shaped abutting ears, and the rear end includes a clamping plate, one side of the clamping plate close to the U-shaped abutting ear is fixedly provided with a V-shaped clamping block.

[0008] Preferably, a soft pad is fixedly arranged on the contact surface between the inner wall of the U-shaped abutting ear and the insulator fixed vertical beam.

[0009] Preferably, a first through hole is formed in the connecting plate, a positioning pin is slidably arranged in the first through hole, one end of the positioning pin away from the V-shaped clamping block is fixedly provided with an operation disc, a spring is connected between the operation disc and the connecting plate, the spring is sleeved on the circumference of the positioning pin, a plurality of second through holes are formed in the fixed frame, and a third through hole matched with the first through hole and the second through hole is formed in the insulator fixed vertical beam.

[0010] The utility model has the advantages of:

[0011] 1. Convenient and efficient installation and disassembly: the design of the fixed component greatly simplifies the installation process of the insulator fixed vertical beam, simplifies the originally complex fixing process into a single action, significantly improves the installation efficiency, and simultaneously considers quick disassembly during maintenance and repair, realizes quick assembly and disassembly, and greatly improves the operation and maintenance efficiency of the power system.

[0012] 2. Optimizing maintenance space: in view of the small rear maintenance hole of the conventional switch cabinet and the narrow space in the pre-support cabin of the mining and transformer box, which leads to the problem of inconvenient cabinet rear fixed bus and maintenance, the utility model separates the fixed frame into left and right two large maintenance holes through the insulator fixed vertical beam, which greatly widens the maintenance space, and the staff can more conveniently operate the internal elements and bus of the switch cabinet whether for daily maintenance or emergency repair, and significantly improves the maintainability of the switch cabinet in special application scenarios. DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the utility model, constitute a part of the present application, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0014] Figure 1 is the overall structure diagram of the utility model;

[0015] Figure 2 is the first structure perspective view of the fixed assembly, insulator fixed beam and fixed frame;

[0016] Figure 3 is the second structure perspective view of the fixed assembly, insulator fixed beam and fixed frame;

[0017] Figure 4 is the structure sectional view of the fixed assembly, insulator fixed beam and fixed frame;

[0018] Legend:

[0019] 1, cabinet body; 2, bent plate frame; 3, insulator fixed vertical beam; 4, first inspection plate; 5, second inspection plate; 6, fixed frame; 7, fixed assembly; 701, front end; 7011, U-shaped abutting lug; 7012, connecting plate; 7013, soft pad; 702, rear end; 7021, clamping plate; 7022, V-shaped clamping block; 8, first through hole; 9, positioning pin; 10, operation disc; 11, spring; 12, second through hole; 13, third through hole. Specific embodiments

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Specific embodiments are given below.

[0022] Please refer to Figures 1-4The utility model discloses a switchgear's overhauling structure, including the cabinet body 1, one side fixed assembly of the inside of cabinet body 1 is provided with the bent plate frame 2, the inner wall fixed setting of bent plate frame 2 is provided with the fixed frame 6 for fixing the fixed vertical beam 3 of insulator, first overhauling plate 4, second overhauling plate 5, first overhauling plate 4 and second overhauling plate 5 are located respectively at the both sides of insulator fixed vertical beam 3, and insulator fixed vertical beam 3 is fixed assembly through fixed component 7, and fixed component 7 includes front end 701 and rear end 702, and front end 701 includes two opposite U-shaped abutment ears 7011, and the fixed setting of U-shaped abutment ear 7011 between is provided with connecting plate 7012, and rear end 702 includes clamping plate 7021, and the side fixed setting of clamping plate 7021 close to U-shaped abutment ear 7011 is provided with V-shaped clamping block 7022, and the first through -hole 8 is seted up on connecting plate 7012, and the first through -hole 8 is slidably provided with the locating pin 9, and the end fixed setting of locating pin 9 away from V-shaped clamping block 7022 is provided with operating disc 10, and the both ends of operating disc 10 and connecting plate 7012 are provided with spring 11, and spring 11 is sleeved on the circumference of locating pin 9, and the second through -hole 12 is seted up on fixed frame 6, and the third through -hole 13 that cooperates with first through -hole 8 and second through -hole 12 is seted up on insulator fixed vertical beam 3;When working, the staff carries out installation operation, first, fixed component 7 is respectively sleeved in the both ends of insulator fixed vertical beam 3, pulls operating disc 10 and makes locating pin 9 retract into first through -hole 8 in the process of sleeving, to avoid when producing the obstruction of the grade of setting, because insulator fixed vertical beam 3 is the U-shaped structure, and fixed component 7 is sleeved on insulator fixed vertical beam 3 with the help of U-shaped abutment ear 7011, completes preliminary installation, then places the insulator fixed vertical beam 3 of both ends with fixed component 7 to the assembly position of fixed frame 6, and the staff pushes the fixed component 7 of the both ends of insulator fixed vertical beam 3 and makes it respectively slide close to fixed frame 6, at this moment, the V-shaped clamping block 7022 with elasticity on fixed component 7 abuts against the surface of fixed frame 6, when fixed component 7 moves in position, V-shaped clamping block 7022 and U-shaped abutment ear 7011 cooperate each other, and insulator fixed vertical beam 3 and fixed frame 6 are preliminarily fixed, and at the same time, locating pin 9 is inserted into the third through -hole 13 on insulator fixed vertical beam 3 under the action of spring 11, thereby limiting the relative position of fixed component 7 and insulator fixed vertical beam 3, and then the staff slides insulator fixed vertical beam 3 horizontally left and right, until it moves to the correct horizontal position, the determination of this position is to make insulator fixed vertical beam 3 divide fixed frame 6 into left and right two sides overhauling, and the size of both sides overhauling corresponds respectively with first overhauling plate 4 and second overhauling plate 5, to facilitate the accurate installation of both on fixed frame 6 subsequently, when insulator fixed vertical beam 3 moves in position, locating pin 9 just moves to the second through -hole 12 of corresponding position on fixed frame 6 and is inserted into it under the action of spring 11, at this moment, locating pin 9 is inserted into third through -hole 13 and second through -hole 12,The position of the insulator fixing vertical beam 3 and the fixing frame 6 is limited, then the staff fixes the first maintenance plate 4 and the second maintenance plate 5 on the corresponding areas on the left and right sides of the fixing frame 6 on the insulator fixing vertical beam 3 respectively by using fixing bolts, when the switch cabinet needs to be maintained, the insulator fixing vertical beam 3 needs to be disassembled, then the maintenance personnel applies external force to the operation disc 10 again, the operation disc 10 moves backward, the spring 11 is stretched, the positioning pin 9 is separated from the third through hole 13 and the second through hole 12, the locking of the insulator fixing vertical beam 3 is released, the staff pulls the operation disc 10, so that the positioning pin 9 is pulled out of the second through hole 12 and the third through hole 13, then the insulator fixing vertical beam 3 can be smoothly taken off, and the insulator fixing vertical beam 3 can be maintained in an overall and detailed manner, compared with the traditional switch cabinet maintenance structure, when similar components are installed, various tools need to be used, and the operation steps are complicated and time-consuming, through the structure design of the utility model, the maintenance personnel can quickly complete the related operation, the installation time of the switch cabinet is greatly shortened, and when the switch cabinet is maintained and disassembled, quick disassembly can be realized, the operation and maintenance efficiency of the power system is greatly improved, and the problems that the rear maintenance hole of the conventional switch cabinet is small, and the fixed bus and maintenance of the cabinet are not convenient due to the small space in the mine and the box transformer pre-support cabin are solved, the fixing frame 6 is divided into left and right two large maintenance holes by the insulator fixing vertical beam 3, the design greatly widens the maintenance space, whether in daily maintenance or emergency repair, the staff can more conveniently operate the internal elements and the bus, and the maintainability of the switch cabinet in a special application scene is significantly improved.

[0023] Further, the inner wall of the U-shaped abutting lug 7011 and the contact surface between the insulator fixing vertical beam 3 are fixedly provided with a soft pad 7013; in work, after the installation of the insulator fixing vertical beam 3 and the fixing frame 6 is completed, in the running process of the switch cabinet, the soft pad 7013 arranged on the contact surface between the inner wall of the U-shaped abutting lug 7011 and the insulator fixing vertical beam 3 has good elasticity and flexibility, when vibration is transmitted to the contact position of the U-shaped abutting lug 7011 and the insulator fixing vertical beam 3, the soft pad 7013 absorbs vibration energy, at the same time, the soft pad 7013 fills the gap between the U-shaped abutting lug 7011 and the insulator fixing vertical beam 3, avoids mutual friction and collision of the surfaces of the two in the vibration process, and the soft pad 7013 can improve the friction force when the fixing assembly 7 is installed on the insulator fixing vertical beam 3, so that the fixing assembly 7 is prevented from sliding on the insulator fixing vertical beam 3 at will during installation.

[0024] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A maintenance structure for a switchgear, characterized in that: The cabinet includes a cabinet (1), and a bent plate frame (2) is fixedly installed on one side of the cabinet (1). A fixing frame (6) for fixing the insulator fixing beam (3), the first inspection plate (4), and the second inspection plate (5) is fixedly installed on the inner wall of the bent plate frame (2). The first inspection plate (4) and the second inspection plate (5) are located on both sides of the insulator fixing beam (3). The insulator fixing beam (3) is fixedly assembled by a fixing component (7).

2. The maintenance structure for a switchgear according to claim 1, characterized in that: The fixing component (7) includes a front end (701) and a rear end (702). The front end (701) includes two opposing U-shaped abutment ears (7011), and a connecting plate (7012) is fixedly disposed between the U-shaped abutment ears (7011). The rear end (702) includes a clamping plate (7021), and a V-shaped clamping block (7022) is fixedly disposed on the side of the clamping plate (7021) near the U-shaped abutment ears (7011).

3. The maintenance structure for a switchgear according to claim 2, characterized in that: A soft pad (7013) is fixedly provided on the contact surface between the inner wall of the U-shaped abutment ear (7011) and the insulator fixing vertical beam (3).

4. The maintenance structure for a switchgear according to claim 2, characterized in that: The connecting plate (7012) has a first through hole (8), and a positioning pin (9) is slidably disposed in the first through hole (8). An operating plate (10) is fixedly disposed on the end of the positioning pin (9) away from the V-shaped clamp (7022). A spring (11) is connected between the operating plate (10) and the connecting plate (7012). The spring (11) is sleeved on the circumference of the positioning pin (9). The fixing frame (6) has several second through holes (12). The insulator fixing vertical beam (3) has a third through hole (13) that cooperates with the first through hole (8) and the second through holes (12).

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