Circuit breaker fixing device

Abstract

The utility model belongs to the technical field of circuit breakers, and discloses a circuit breaker fixing device, which comprises two fixing frames, a support rod and a fastener, and is characterized in that the two fixing frames are oppositely arranged, and the relative distance between the two fixing frames is adjustable so as to accommodate a circuit breaker; the supporting rod is arranged in the vertical direction and fixedly connected with the fixing frame, a plurality of mounting holes are formed in the two sides of the base frame respectively, a plurality of positioning holes are formed in the supporting rod in the length direction of the supporting rod at intervals, and the positioning holes correspond to the mounting holes in a one-to-one mode. The fastener is detachably arranged on the supporting rod and can penetrate through the mounting hole and the positioning hole which are opposite in position so that the base frame can be connected to the supporting rod in a fastened mode. According to the utility model, during the disassembly and maintenance process of the circuit breaker, when the circuit breaker is placed on the ground, the stress is uniform, the gravity center inclination or uneven stress is avoided, the weight is concentrated on a single part, the deformation risk is reduced, the service life of the circuit breaker is prolonged, and the reliable operation after the maintenance of the switch cabinet is ensured.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker fixing device. Background Technology

[0002] The 40.5kV gas-insulated switchgear is a medium- and high-voltage gas-insulated switchgear that uses sulfur hexafluoride (SF6) gas as both the insulating and arc-quenching medium, and is widely used in power transmission and distribution systems. The circuit breaker, as the core control and protection device of the gas-insulated switchgear, requires strict sealing due to the use of SF6 gas insulation inside. Typically, the circuit breaker is divided into an operating zone and a breaking zone, with the operating zone located outside the cabinet and the breaking zone inside.

[0003] During the service life of gas-insulated switchgear, various factors may cause it to malfunction. Therefore, troubleshooting and maintenance must be carried out according to the operation and maintenance regulations, including the regular disassembly and inspection of key components such as circuit breakers. However, because the breaking zone of a circuit breaker is heavier than the operating zone, when a disassembled circuit breaker is placed, the center of gravity is easily shifted towards the breaking zone, causing the weight to concentrate on the edges of the base frame and the sheet metal structure of the breaking zone. Over time, this may cause base frame deformation, affecting the installation accuracy of the circuit breaker, and subjecting the sheet metal to excessive pressure. It may even cause the sheet metal in the breaking zone to bend or be damaged, thereby affecting the sealing performance and threatening the reliable operation of the equipment.

[0004] Therefore, there is an urgent need for a circuit breaker fixing device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a circuit breaker fixing device that ensures even force distribution when the circuit breaker is placed on the ground during disassembly and maintenance, preventing tilting or uneven force distribution, concentrating the weight on a single part, reducing the risk of deformation, extending the service life of the circuit breaker, and ensuring reliable operation of the switchgear after maintenance.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Circuit breaker mounting device, including:

[0008] Two mounting brackets are positioned opposite each other, and the relative distance between the two brackets is adjustable to accommodate the circuit breaker;

[0009] The support rod is arranged vertically and fixedly connected to the fixing frame. The base frame has multiple mounting holes on both sides. The support rod has multiple positioning holes spaced apart along its length, and the multiple positioning holes correspond one-to-one with the multiple mounting holes.

[0010] Fasteners are detachably mounted on the support rod and can pass through the mounting holes and positioning holes located opposite each other, so as to secure the base frame to the support rod.

[0011] Furthermore, multiple fasteners are provided, and the multiple fasteners are symmetrically arranged along both sides of the base frame, and respectively pass through the mounting holes and positioning holes on both sides of the base frame.

[0012] Furthermore, the fastener includes a bolt and a nut, one end of the bolt passing through the mounting hole and the positioning hole in opposite positions and being threadedly connected to the nut; the other end of the bolt can be abutted against either the base frame or the support rod, and the nut can be abutted against the other.

[0013] Furthermore, the fastener further includes a washer disposed between the fastener and the base frame; and / or

[0014] The gasket is disposed between the fastener and the support rod.

[0015] Furthermore, the support rod has an L-shaped structure, one side of the support rod is fixedly connected to the fixing frame, and the other side has a plurality of positioning holes along its length.

[0016] Furthermore, the fixing frame is a rectangular frame, the length of the fixing frame is greater than the length of the circuit breaker, and the height of the rectangular frame is greater than the height of the circuit breaker.

[0017] Furthermore, the fixing frame also includes reinforcing ribs, which are disposed on the side of the fixing frame opposite to the circuit breaker.

[0018] Furthermore, the support rod is welded to the fixing frame.

[0019] Furthermore, the mounting bracket is provided with a lifting ring on the side opposite to the circuit breaker.

[0020] Furthermore, the base is equipped with multiple casters at its bottom.

[0021] The beneficial effects of this utility model are:

[0022] This utility model provides a circuit breaker fixing device, including two fixing frames, support rods, and fasteners. During the disassembly and maintenance of the circuit breaker, the fixing frames are distributed on both sides of the circuit breaker, and the support rods are fixed on the fixing frames and arranged vertically. Multiple mounting holes are provided on both sides of the circuit breaker's base frame, and fasteners are connected one-to-one with the positioning holes of the support rods. The fasteners pass through the corresponding mounting holes and positioning holes, securing the circuit breaker's base frame to the support rods. Through the synergistic action of the fixing frames, support rods, and fasteners, a symmetrical support structure is formed, providing stable load-bearing support on both sides of the circuit breaker. When the circuit breaker is placed on the ground, its weight is evenly transferred to the support rods and fixing frames, ensuring the circuit breaker's center of gravity is balanced. This avoids excessive local pressure caused by a shift in the center of gravity, preventing equipment deformation and tilting, and ensuring its stability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a circuit breaker in the prior art;

[0024] Figure 2 This is a front view of the circuit breaker fixing device of this utility model;

[0025] Figure 3 This is a top view of the circuit breaker fixing device of this utility model;

[0026] Figure 4 This is a side view of the circuit breaker fixing device of this utility model;

[0027] Figure 5 This is a top view of the circuit breaker fixing device and the circuit breaker assembly of this utility model;

[0028] Figure 6 This is a front view of the circuit breaker fixing device and the circuit breaker assembly of this utility model;

[0029] Figure 7 This is a side view of the circuit breaker fixing device and the circuit breaker assembly of this utility model.

[0030] In the picture:

[0031] 100. Circuit breaker; 101. Breaking zone; 102. Operating area; 103. Base frame;

[0032] 1. Fixture; 2. Support rod; 3. Positioning hole; 4. Fastener. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] like Figure 1 As shown, the circuit breaker 100 includes a breaking zone 101, an operating zone 102, and a base frame 103. The breaking zone 101 and the operating zone 102 are respectively installed on both sides of the base frame 103. The base frame 103 has mounting holes on its outer edge, allowing it to be fixedly connected to a gas-insulated switchgear. Because the weight of the breaking zone 101 is greater than that of the operating zone 102, when the circuit breaker 100 is disassembled and placed on the ground, the center of gravity tends to shift towards the heavier breaking zone 101, causing the entire circuit breaker 100 to tilt towards the breaking zone 101. This concentrates the weight on the edge of the base frame 103 and the sheet metal structure of the breaking zone 101. Over time, this may cause deformation of the base frame 103, affecting the installation accuracy of the circuit breaker 100. It may also cause excessive pressure on the sheet metal, potentially leading to bending or damage to the sheet metal portion of the breaking zone 101, thus affecting sealing performance and threatening the reliable operation of the equipment.

[0038] Please refer to Figures 2 to 7To address the aforementioned issues, this embodiment provides a circuit breaker fixing device, comprising two fixing frames 1, a support rod 2, and fasteners 4. The two fixing frames 1 are positioned opposite each other, and their relative distance is adjustable to accommodate the circuit breaker 100. The support rod 2 is arranged vertically and fixedly connected to the fixing frames 1. Multiple mounting holes are provided on both sides of the base frame 103, and multiple positioning holes 3 are spaced apart along the length of the support rod 2, with each positioning hole 3 corresponding to one of the mounting holes. The fasteners 4 are detachably mounted on the support rod 2 and can pass through the opposite mounting holes and positioning holes 3 to securely connect the base frame 103 to the support rod 2.

[0039] During the disassembly and maintenance of circuit breaker 100, since the fixing frame 1 is distributed on both sides of circuit breaker 100, the support rod 2 is fixed on the fixing frame 1 and arranged vertically. The base frame 103 of circuit breaker 100 has multiple mounting holes on both sides, and is connected to the positioning holes 3 of support rod 2 one by one through fasteners 4. The fasteners 4 pass through the mounting holes and positioning holes 3 in opposite positions, and fasten the base frame 103 of circuit breaker 100 to support rod 2. Through the synergistic action of fixing frame 1, support rod 2 and fasteners 4, a symmetrical support structure is formed, which provides stable load-bearing support on both sides of circuit breaker 100. When circuit breaker 100 is placed on the ground, its weight is evenly transferred to support rod 2 and fixing frame 1, ensuring the balance of the center of gravity of circuit breaker 100, avoiding excessive local pressure caused by center of gravity shift, equipment deformation and tilting, and ensuring its stability.

[0040] like Figures 2 to 4 As shown, optionally, the support rod 2 is welded to the fixing frame 1, wherein the welding connection can ensure that the connection between the support rod 2 and the fixing frame 1 is firm and reliable.

[0041] Optionally, multiple fasteners 4 are provided, and the multiple fasteners 4 are symmetrically arranged along both sides of the base frame 103, and respectively pass through the mounting holes and positioning holes 3 on both sides of the base frame 103. The symmetrical arrangement of multiple fasteners 4 makes the left and right forces of the circuit breaker 100 balanced, further avoiding the center of gravity shift, and also allows the weight of the circuit breaker 100 to be evenly distributed on each fastening point, avoiding local stress concentration, deformation or damage caused by excessive force at a single point.

[0042] Specifically, the fastener 4 includes a bolt and a nut. One end of the bolt passes through the mounting hole and positioning hole 3 in opposite positions and is threadedly connected to the nut. The other end of the bolt can be tightened against either the base frame 103 or the support rod 2, and the nut can be tightened against the other. The threaded connection of the bolt and nut provides a strong locking force, ensuring that the entire circuit breaker fixing device is more stable and preventing the connection from loosening or shifting. At the same time, the tightening and loosening of the bolt and nut is simple and convenient, making it easier to operate.

[0043] In other embodiments, the fastener 4 may also be a quick-locking pin, etc., which is not specifically limited here.

[0044] In order to reduce wear at the connection between the base frame 103 and the fastener 4, in some embodiments, the fastener 4 also includes a gasket, which is disposed between the fastener 4 and the base frame 103; and / or the gasket is disposed between the fastener 4 and the support rod 2; wherein the gasket can prevent the bolt head or nut from directly pressing on the surface of the base frame 103, and avoid deformation or dent of the base frame 103 material due to long-term fastening.

[0045] Alternatively, the gasket may be made of a soft, elastic material, such as a silicone gasket or a rubber gasket, without any specific limitation.

[0046] like Figure 3 As shown, to improve the load-bearing capacity of the support rod 2, in some embodiments, the support rod 2 has an L-shaped structure. One side of the support rod 2 is fixedly connected to the fixing frame 1, and the other side has multiple positioning holes 3 along its length. The L-shaped support rod 2 has greater bending strength than a straight rod, enabling it to better support the weight of the circuit breaker 100 and prevent deformation or bending. Simultaneously, the L-shaped support rod 2 provides a larger contact surface, enhancing the connection strength between the fixing frame 1 and the support rod 2, as well as the connection strength between the support rod 2 and the base, making the overall device more stable.

[0047] like Figures 5 to 7 As shown, the operating area 102 and breaking area 101 of the circuit breaker 100 may experience different faults, requiring rotation and angle adjustment during maintenance. To accommodate maintenance operations in different fault areas, in this embodiment, the mounting bracket 1 is a rectangular frame. The length of the mounting bracket 1 is greater than the length of the circuit breaker 100, and the height of the rectangular frame is greater than the height of the circuit breaker 100. Specifically, designing the mounting bracket 1 as a rectangular frame, with its length greater than the length of the circuit breaker 100 and its height greater than the height of the circuit breaker 100, allows the circuit breaker 100 to rotate freely by 90° or 270° after being installed on the mounting device, ensuring that the fault area always faces upwards, facilitating maintenance operations. Furthermore, because the rectangular frame is larger than the circuit breaker 100, the circuit breaker 100 will not touch the ground regardless of the rotation angle, thus avoiding excessive local stress, ensuring a stable center of gravity, preventing tilting or deformation of the device, and allowing maintenance personnel to more easily troubleshoot and operate it. For example, when the breaking zone 101 needs maintenance, the circuit breaker 100 can be flipped so that the breaking zone 101 faces upward, making it convenient for operators to inspect and replace parts without having to remove the entire fixed device.

[0048] Optionally, a lifting ring is provided on the side of the mounting frame 1 away from the circuit breaker 100; wherein, during maintenance or installation, the lifting ring provides a reliable lifting point, which facilitates the hoisting and rotation of the mounting frame 1 with the help of lifting equipment, thereby improving work efficiency.

[0049] Optionally, the mounting bracket 1 also includes reinforcing ribs, which are located on the side of the mounting bracket 1 facing away from the circuit breaker 100. The reinforcing ribs can effectively improve the bending and torsional resistance of the mounting bracket 1, evenly distribute the load borne by the mounting bracket 1, avoid deformation due to bearing the weight of the circuit breaker 100 or external forces for a long time, and extend the service life.

[0050] The reinforcing members can be arranged diagonally along the fixed frame 1 to form an X-shaped structure or a grid-shaped structure, without specific limitations.

[0051] To facilitate movement, in this embodiment, the bottom of the fixed frame 1 is equipped with casters. The casters allow maintenance personnel to easily push and pull the fixed frame 1, reducing the burden of manual handling.

[0052] Optionally, the caster wheel has a braking structure, which can easily lock or unlock the caster wheel, making it easier to control the movement and positioning of the equipment and improve work efficiency. When the circuit breaker 100 is assembled with the circuit breaker fixing device, the caster wheel can be locked by the braking device to prevent the fixing frame 1 from moving and ensure accurate alignment. When the fixing frame 1 is moved, the caster wheel can be unlocked to facilitate its movement.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A circuit breaker retaining device characterized by, The utility model relates to a circuit breaker fixing device, including: Two fixed frames (1), two the fixed frame (1) position opposite arrangement, and two opposite interval adjustable, accommodate circuit breaker (100); Supporting rod (2), along vertical direction arrangement and with fixed connection of fixed frame (1), the both sides of base frame (103) are equipped with a plurality of mounting holes, a plurality of positioning holes (3) are set up on the supporting rod (2) along its length direction interval, a plurality of positioning holes (3) with a plurality of mounting hole one to one correspondence; Fastener (4) is detachably arranged on the supporting rod (2), and can penetrate the opposite mounting hole and positioning hole (3), so as to fasten the base frame (103) to the supporting rod (2).

2. The circuit breaker holder of claim 1, wherein, The fastener (4) is provided with a plurality of fasteners (4), and the fastener (4) is symmetrically arranged on the both sides of the base frame (103) and is respectively arranged on the opposite mounting hole and positioning hole (3) on the both sides of the base frame (103).

3. The circuit breaker holder of claim 2, wherein, The fastener (4) includes a bolt and a nut, one end of the bolt is arranged in the opposite mounting hole and the positioning hole (3), and is threadedly connected with the nut; the other end of the bolt can be tightly contacted with any one of the base frame (103) and the supporting rod (2), and the nut can be tightly contacted with the other one.

4. The circuit breaker holder of claim 2, wherein, The fastener (4) further includes a gasket, the gasket is arranged between the fastener (4) and the base frame (103); and / or The gasket is arranged between the fastener (4) and the supporting rod (2).

5. The circuit breaker holder of claim 1, wherein, The supporting rod (2) is in L-shaped structure, one side of the supporting rod (2) is fixedly connected with the fixed frame (1), and a plurality of positioning holes (3) are formed on the other side along the length direction.

6. The circuit breaker holder of claim 1, wherein, The fixed frame (1) is a rectangular frame, the length of the fixed frame (1) is greater than the length of the circuit breaker (100), and the height of the rectangular frame is higher than the height of the circuit breaker (100).

7. The circuit breaker holder of claim 6, wherein, The side of the fixed frame (1) away from the circuit breaker (100) is provided with a lifting ring.

8. The circuit breaker holder of claim 7, wherein, The fixed frame (1) further includes a reinforcing rib, and the reinforcing rib is arranged on the side of the fixed frame (1) away from the circuit breaker (100).

9. The circuit breaker holder of any of claims 1-8, wherein, The supporting rod (2) is welded with the fixed frame (1).

10. The circuit breaker holder of claim 9, wherein, The bottom of the fixed frame (1) is provided with universal wheels.

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