A hoist type safety detachable mobile support for a current transformer

Abstract

This utility model relates to a suspended, safe, detachable, and mobile support for current transformers, comprising a support body, a sliding guide mechanism, detachable connecting components, a safety locking device, and an optional mobile base. This utility model uses a U-shaped movable lower plate to support the transformer and a safety locking device to prevent tipping, completely replacing manual lifting, eliminating the risk of injury from falling objects, and reducing operational risks. The sliding guide mechanism ensures precise alignment of the transformer, and the detachable connecting components simplify the disassembly and assembly process, allowing for single-person operation and improving efficiency compared to traditional methods. The U-shaped structure of the support body is compatible with the narrow internal space of mainstream high-voltage switchgear such as KYN28, eliminating the need for customization for different equipment. The core components are made of aluminum-zinc coated steel and stainless steel, which are resistant to high-pressure corrosion and have an increased service life. Furthermore, no additional special tools are required, reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for high-voltage electrical equipment, specifically a current transformer installation and maintenance bracket suitable for high-voltage metal-clad removable equipment, such as the KYN28 type high-voltage switchgear. Background Technology

[0002] In the production and maintenance of high-voltage metal-clad withdrawable equipment, the installation of current transformers is one of the core processes. In existing technology, the hoisting device for current transformers mainly consists of a large bending plate, a U-shaped reinforcing beam, and fixing bolts. The installation method requires directly fixing the current transformer to the large bending plate and the U-shaped reinforcing beam with bolts. This approach has the following significant drawbacks:

[0003] High safety risks: Current transformers typically weigh more than 25kg, and the space inside the high-voltage cabinet is narrow, especially for mainstream models such as KYN28. During installation, one operator needs to squat inside the cabinet to support the transformer in a stable position, while another person outside the cabinet aligns it with the bolt holes to fix it. It is very easy for the transformer to tip over due to unstable support, causing injury accidents.

[0004] Low operational efficiency: Manual hole positioning relies on experience, and a single disassembly and assembly operation takes more than 30 minutes, which prolongs the equipment downtime for maintenance and affects the continuous operation of the power system.

[0005] Poor adaptability: Traditional brackets are fixed structures and cannot be adjusted according to the internal space of different high-voltage switchgear models, resulting in weak versatility.

[0006] High operational threshold: It requires two professionals to operate and has high skill requirements, making it unsuitable for rapid on-site maintenance scenarios.

[0007] To address the aforementioned issues, there is an urgent need for a dedicated bracket for current transformers that combines safety protection, precise adaptation, and high efficiency and convenience, in order to optimize the installation and maintenance process of current transformers in high-voltage cabinets. Utility Model Content

[0008] In view of the problems in the related technologies, this utility model proposes a suspended, safe, detachable, and movable support for current transformers to overcome the aforementioned technical problems in the existing related technologies.

[0009] Therefore, the specific technical solution adopted by this utility model is as follows:

[0010] A suspended, safety-type, detachable, and mobile support for current transformers includes a support body, a sliding guide mechanism, a detachable connection assembly, a safety locking device, and an optional mobile base. The structure and function of each component are as follows:

[0011] Support body:

[0012] It consists of a U-shaped fixed upper plate and a U-shaped movable lower plate, both of which are integrally formed from 2.0-2.5mm thick aluminum-zinc coated plates, balancing load-bearing capacity and corrosion resistance;

[0013] U-shaped fixed upper plate: The top is attached to the reinforcing hoisting beam and large curved plate in the high voltage cabinet. The plate has multiple bolt holes for fixing to the equipment through detachable connection components, providing a support benchmark for the overall bracket.

[0014] U-shaped movable lower plate: The inner side is adapted to the outer wall of the current transformer, and the plate body is reserved with fixing holes for the current transformer to carry the current transformer and realize its position adjustment.

[0015] Sliding guide mechanism:

[0016] It includes a fixed sliding rail for the U-shaped upper plate and a movable sliding rail for the U-shaped lower plate. Both have a concave-convex fit structure. The fixed rail has a boss and the movable rail has a groove, which can slide in the horizontal direction.

[0017] The sliding track surface is coated with a wear-resistant coating such as polytetrafluoroethylene to reduce sliding resistance and ensure that the current transformer can be moved smoothly to the installation position without the need for manual handling and alignment.

[0018] Detachable connection components:

[0019] Composed of rivet nuts and stainless steel bolts, the rivet nuts are pre-installed in the bolt holes of the U-shaped upper fixing plate, and the stainless steel bolts, with specifications M8-M10, pass through the bolt holes of the high voltage cabinet large bending plate, the U-shaped upper fixing plate, and the rivet nuts in sequence to achieve rapid fastening of the bracket and equipment.

[0020] The current transformer and the U-shaped movable lower plate are fixed with rivet nuts and bolts of the same specification. No additional drilling is required for disassembly and assembly, reducing damage to the equipment.

[0021] Safety locking device:

[0022] Installed on the outside of the U-shaped movable lower plate, including a resilient locking tongue and a positioning slot, the positioning slot being pre-set at the end of the sliding track of the U-shaped fixed upper plate;

[0023] When the U-shaped movable lower plate moves the current transformer to the installation position, the elastic locking tongue automatically engages with the positioning slot to restrict the sliding of the lower plate. If disassembly is required, pressing the locking tongue release button will unlock the device, preventing the current transformer from accidentally sliding and tipping over during installation or relocation.

[0024] Optional mobile base, suitable for multi-station maintenance scenarios:

[0025] The base is made of cold-rolled steel plate welded together, and four silent universal wheels with brakes are installed at the bottom;

[0026] The top of the base is detachably connected to the U-shaped fixed upper plate by bolts, which facilitates the movement of the entire bracket between different high-voltage cabinets and improves the flexibility of on-site maintenance.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] 1. The U-shaped movable lower plate supports the current transformer, and the safety locking device prevents tipping, completely replacing manual lifting, eliminating the risk of injury from falling objects, and reducing operational risks;

[0029] 2. The sliding guide mechanism enables precise alignment of the current transformer, and the detachable connection components simplify the disassembly and assembly process. The current transformer can be disassembled and assembled by a single person, which improves efficiency compared to the traditional method.

[0030] 3. The main body of the bracket adopts a U-shaped structure, which can be compatible with the narrow internal space of mainstream high-voltage switchgear such as KYN28, without the need for customization for different equipment;

[0031] 4. The core components are made of aluminum-zinc coated steel and stainless steel, which are resistant to high pressure corrosion and have an increased service life; and no additional special tools are required, reducing maintenance costs.

[0032] 5. The structure is simple and easy to use. Non-professionals can get started with simple training, which solves the problem of relying on professionals in the traditional way. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the assembly structure of a suspended safety detachable movable bracket for a current transformer according to an embodiment of the present utility model;

[0035] Figure 2 yes Figure 1 Enlarged diagram of A in the middle;

[0036] Figure 3 This is one of the overall structural schematic diagrams of a hoisting safety type detachable movable bracket for a current transformer according to an embodiment of the present utility model;

[0037] Figure 4 This is the second schematic diagram of the overall structure of a hoisting safety detachable movable bracket for a current transformer according to an embodiment of the present utility model;

[0038] Figure 5This is the third schematic diagram of the overall structure of a hoisting safety detachable movable bracket for a current transformer according to an embodiment of the present utility model;

[0039] Figure 6 This is a schematic diagram of the old hoisting large curved plate horizontal plate;

[0040] Figure 7 This is a schematic diagram of the improved hoisting of the large curved plate horizontal plate;

[0041] Figure 8 yes Figure 1 A schematic diagram of a U-shaped fixed upper plate and a U-shaped movable lower plate.

[0042] In the picture:

[0043] 1. Large curved horizontal plate; 2. Reinforced hoisting beam; 3. U-shaped fixed upper plate; 4. U-shaped movable lower plate; 5. Rivet nuts and bolts; 6. Current transformer; 7. Fixed sliding rail; 8. Movable sliding rail; 9. Safety locking device. Detailed Implementation

[0044] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0045] Please refer to the instruction manual appendix. Figure 1-8 A suspended safety detachable mobile support for a current transformer according to an embodiment of the present utility model includes a support body, a sliding guide mechanism, a detachable connecting component and a safety locking device;

[0046] The main body of the support includes a U-shaped fixed upper plate 3 and a U-shaped movable lower plate 4. The U-shaped fixed upper plate 3 is used to be fixedly connected to the reinforcing hoisting beam 2 and the large curved plate 1 of the high-voltage metal armored removable equipment. The U-shaped movable lower plate 4 is used to carry the current transformer 6.

[0047] The sliding guide mechanism includes a fixed sliding rail 7 disposed on the U-shaped fixed upper plate 3 and a movable sliding rail 8 disposed on the U-shaped movable lower plate 4. The movable sliding rail and the fixed sliding rail are engaged in a concave-convex fit to achieve sliding.

[0048] The detachable connection assembly includes rivet nuts and bolts 5, used to connect the U-shaped fixed upper plate 3 to the equipment and the U-shaped movable lower plate 4 to the current transformer 6.

[0049] The safety locking device 9 is located on the outside of the U-shaped movable lower plate 4, and includes an elastic locking tongue and a positioning slot, used to lock the sliding position of the U-shaped movable lower plate.

[0050] The U-shaped fixed upper layer 3 plate is integrally formed from 2.5mm thick aluminum-zinc coated plate, and the U-shaped movable lower layer 4 is integrally formed from 2.0mm thick aluminum-zinc coated plate.

[0051] The fixed sliding track 7 has a boss structure, and the movable sliding track 8 has a groove structure. Both surfaces are coated with a polytetrafluoroethylene wear-resistant coating.

[0052] The rivet nuts are available in two sizes, M8 and M10, and the tightening torque of the bolts is 6-10 N·m.

[0053] The elastic locking tongue of the safety locking device 9 is made of spring steel, and the positioning slot is preset at the end of the fixed sliding track. The elastic locking tongue can automatically engage with the positioning slot.

[0054] It also includes a movable base, which is welded from cold-rolled steel plate, with four silent casters with brakes installed at the bottom, and the top is detachably connected to the U-shaped upper plate by bolts.

[0055] It is compatible with KYN28 and KYN61 high-voltage metal-clad withdrawable equipment and can carry current transformers weighing ≤50kg.

[0056] Assembly and usage process

[0057] Bracket fixing installation:

[0058] Take out the U-shaped upper fixing plate 3 and attach it to the bottom of the reinforcing hoisting beam 2 and the large curved plate 1 inside the high voltage cabinet, aligning it with the preset installation hole;

[0059] Use rivet nuts and stainless steel bolts to fix the upper plate 3 and the large curved plate 1 through the U-shape, and tighten the bolts to ensure that the upper plate is fixed without loosening; if you need to enhance stability, use rivet nuts on the U-shaped upper plate for additional fixation.

[0060] The current transformer is connected to the lower plate:

[0061] Place the current transformer (weight ≤50kg) inside the U-shaped movable lower plate 4, and adjust the position of the transformer so that the installation hole of the transformer is aligned with the reserved hole of the lower plate.

[0062] Use rivet nuts and stainless steel bolts to pass through the lower plate and the transformer, tighten the bolts, and complete the rigid connection between the transformer and the lower plate.

[0063] Current transformer positioning and locking:

[0064] Push the U-shaped movable lower plate 4 so that its movable sliding track 8 moves smoothly along the fixed sliding track 7 of the U-shaped fixed upper plate 3 until the current transformer reaches the preset installation position;

[0065] At this point, the elastic locking tongue of the safety locking device 9 automatically engages with the positioning slot. After hearing a click, the lock is confirmed. Gently push the lower shelf; if there is no slippage, the positioning is complete.

[0066] Disassembly and relocation:

[0067] During disassembly, press the release button of the locking tongue of the safety locking device 9 and push the U-shaped movable lower plate 4 in the opposite direction to remove the current transformer;

[0068] If multi-station maintenance is required, connect the main body of the bracket to the optional movable base with bolts, open the brakes on the universal wheels of the base to push the bracket to move as a whole, and lock the brakes to fix it after reaching the target position.

[0069] This utility model uses a U-shaped movable lower plate to support the current transformer and a safety locking device to prevent tipping, completely replacing manual lifting, eliminating the risk of injury from falling objects, and reducing operational risks. The sliding guide mechanism ensures precise alignment of the current transformer, and the detachable connecting components simplify the disassembly and assembly process. A single person can complete the disassembly and assembly of the current transformer, improving efficiency compared to traditional methods. The main body of the bracket adopts a U-shaped structure, which is compatible with the narrow internal space of mainstream high-voltage switchgear such as KYN28, eliminating the need for customization for different equipment. The core components are made of aluminum-zinc coated plates and stainless steel, which are resistant to high-pressure corrosion and have an increased service life. Moreover, no additional special tools are required, reducing maintenance costs. The structural design is simple, and non-professionals can operate it after simple training, eliminating the reliance on professional personnel in traditional methods.

[0070] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.

Claims

1. A suspended, safety-type, detachable, and movable support for current transformers, characterized in that: Includes the main support body, sliding guide mechanism, detachable connection components, and safety locking device; The main body of the support includes a U-shaped fixed upper plate (3) and a U-shaped movable lower plate (4). The U-shaped fixed upper plate (3) is used to be fixedly connected to the reinforcing hoisting beam (2) and the large curved plate (1) of the high-voltage metal armored removable equipment. The U-shaped movable lower plate (4) is used to carry the current transformer (6). The sliding guide mechanism includes a fixed sliding rail (7) provided on the U-shaped fixed upper plate (3) and a movable sliding rail (8) provided on the U-shaped movable lower plate (4). The movable sliding rail and the fixed sliding rail are engaged in a concave-convex fit to achieve sliding. The detachable connection assembly includes rivet nuts and bolts (5) for connecting the U-shaped fixed upper plate (3) to the equipment and the U-shaped movable lower plate (4) to the current transformer (6); The safety locking device (9) is located on the outside of the U-shaped movable lower plate (4), and includes an elastic locking tongue and a positioning slot, which are used to lock the sliding position of the U-shaped movable lower plate.

2. The suspended, safety-type, detachable, and movable support for current transformers according to claim 1, characterized in that: The U-shaped fixed upper plate (3) is integrally formed from a 2.5mm thick aluminum-zinc plate, and the U-shaped movable lower plate (4) is integrally formed from a 2.0mm thick aluminum-zinc plate.

3. A suspended, safety-type, detachable, and movable support for current transformers according to claim 2, characterized in that: The fixed sliding track (7) has a boss structure, and the movable sliding track (8) has a groove structure. Both surfaces are coated with a polytetrafluoroethylene wear-resistant coating.

4. A suspended, safety-type, detachable, and movable support for current transformers according to claim 3, characterized in that: The rivet nuts are available in two sizes, M8 and M10, and the tightening torque of the bolts is 6-10 N·m.

5. A suspended, safety-type, detachable, and movable support for current transformers according to claim 1, characterized in that: The elastic locking tongue of the safety locking device (9) is made of spring steel, and the positioning slot is preset at the end of the fixed sliding track. The elastic locking tongue can automatically engage with the positioning slot.

6. A suspended, safety-type, detachable, and movable support for current transformers according to claim 1, characterized in that: It also includes a movable base, which is welded from cold-rolled steel plate, with four silent casters with brakes installed at the bottom, and the top is detachably connected to the U-shaped upper plate by bolts.

7. A suspended, safety-type, detachable, and movable support for current transformers according to claim 1, characterized in that: It is compatible with KYN28 and KYN61 high-voltage metal-clad withdrawable equipment and can carry current transformers weighing ≤50kg.

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