A cage type lifting device for GCB arc extinguishing chamber
By designing a cage-type lifting device and adopting a fully enclosed structure consisting of a middle cover, side covers, and a hanger, the problem of arc-extinguishing chamber damage caused by traditional lifting methods was solved, achieving protection and stability during the lifting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA YANGTZE POWER
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional rigid lifting methods can easily cause the ceramic shell of the GCB arc-extinguishing chamber to crack or the seals to fail. Furthermore, existing lifting devices lack all-around protection and are easily damaged by collisions during transportation and hoisting.
A cage-type lifting device is adopted, including a middle cover, side covers and a lifting frame, forming a fully enclosed protective structure. Through multi-point connection and buffer design, the force is distributed and the impact force during the lifting process is reduced.
It effectively prevents the arc-extinguishing chamber from being damaged by collisions during hoisting, ensuring its integrity and stability after hoisting and reducing the probability of damage.
Smart Images
Figure CN224362367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of arc-extinguishing chamber hoisting technology, specifically to a cage-type hoisting device for a GCB arc-extinguishing chamber. Background Technology
[0002] Circuit breakers are key devices for ensuring stable and safe power transmission, and their performance directly affects the reliable operation of the entire system. Among them, the arc-extinguishing chamber, as the core component of the circuit breaker, undertakes the important mission of quickly extinguishing the electric arc when the circuit is broken. It plays a decisive role in preventing damage to electrical equipment and avoiding power accidents. For example, sulfur hexafluoride circuit breakers (GCBs) and their arc-extinguishing chambers have been widely used in the power industry.
[0003] As a core component of high-voltage switchgear, the lifting operation of the GCB arc-extinguishing chamber faces the following technical challenges:
[0004] Arc-extinguishing chambers typically consist of a ceramic shell, a precision contact system, and a gas-sealed structure. Traditional rigid lifting methods are prone to causing the ceramic shell to crack or the seals to fail due to uneven stress.
[0005] Furthermore, the existing lifting equipment lacks comprehensive protection for the arc-extinguishing chamber, making it susceptible to collision damage during transportation and hoisting. Utility Model Content
[0006] The main purpose of this utility model is to provide a cage-type lifting device for a GCB arc-extinguishing chamber, which solves the problem of easy damage to the arc-extinguishing chamber during the lifting process.
[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0008] A cage-type lifting device for a GCB arc-extinguishing chamber includes a support assembly connected to the arc-extinguishing chamber;
[0009] The arc extinguishing chamber is equipped with an intermediate cover around its perimeter, and side covers are provided at both ends of the intermediate cover;
[0010] The arc-extinguishing chamber is enclosed by a combination of a central shield and two side shields;
[0011] The arc-extinguishing chamber is equipped with a side hanger, and the side cover is equipped with a hanger.
[0012] In the preferred embodiment, the intermediate cover is divided into two equal parts along the axis;
[0013] The inner side of the intermediate cover is provided with a positioning sleeve, which abuts against the arc-extinguishing chamber;
[0014] The inner side of the positioning sleeve is adapted to the arc-extinguishing chamber;
[0015] The positioning sleeve has a rubber pad inside.
[0016] In a preferred embodiment, the hanger includes an upper half-ring and a lower half-ring, which are combined to form a ring and fitted onto both ends of the intermediate cover;
[0017] The edge of the middle cover is provided with a limiting ring, which is located inside the upper and lower half rings;
[0018] A connecting plate is provided at the connection between the upper and lower half rings, and the connecting plate is fixed by bolts and nuts;
[0019] The top of the upper half ring is equipped with the first hanging ring.
[0020] In the preferred embodiment, the side cover is divided into two parts, which are fixedly connected to the upper half ring and the lower half ring respectively.
[0021] In the preferred embodiment, a limiting ring is provided on the outer periphery of the side cover;
[0022] The limiting rings of the middle cover and the side cover fit together, and the upper half ring and the lower half ring are combined and fitted onto the connection between the middle cover and the side cover, and are located outside the limiting ring.
[0023] In a preferred embodiment, the side-mounted device includes a boom fixedly connected to the arc-extinguishing chamber, the boom having a second lifting ring that passes through the intermediate cover and is located outside the intermediate cover.
[0024] In the preferred embodiment, the interior of the intermediate cover is provided with insertion holes;
[0025] The boom is equipped with a fixing block that extends into the interior of the insertion hole and abuts against the top wall of the insertion hole.
[0026] In a preferred embodiment, the support assembly includes a connecting plate that connects to the arc-extinguishing chamber;
[0027] The bottom of the connecting plate is equipped with a bracket.
[0028] In the preferred embodiment, the bottom of the bracket is equipped with several casters;
[0029] The casters are Foma casters.
[0030] In a preferred embodiment, a stabilizing seat is provided at the bottom of the connecting plate, and the stabilizing seat is slidably connected to the inside of the bracket;
[0031] The bottom of the stabilizer is equipped with a spring and a movable column;
[0032] The movable column passes through the spring and the bracket;
[0033] The bottom of the movable column is equipped with a limiting plate.
[0034] This utility model provides a cage-type lifting device for a GCB arc-extinguishing chamber. By adopting the above solution, the following beneficial effects are achieved:
[0035] 1. The arc-extinguishing chamber is protected as a whole during hoisting to prevent it from being hit during the process and to ensure its integrity after hoisting.
[0036] 2. The hoisting equipment is connected at multiple points, and the stress on the arc-extinguishing chamber during the hoisting process is distributed, ensuring the stability of the hoisting process.
[0037] 3. After hoisting, the arc-extinguishing chamber can be stably lowered, thereby reducing the probability of damage to the arc-extinguishing chamber. Attached Figure Description
[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0039] Figure 1 This is a structural schematic diagram of a cage-type lifting device for a GCB arc-extinguishing chamber according to the present invention.
[0040] Figure 2 This is the front view of the present invention;
[0041] Figure 3 This is a cross-sectional enlarged structural schematic diagram of the present invention;
[0042] Figure 4 This is a schematic diagram of an embodiment of the present utility model;
[0043] Figure 5 This is a schematic diagram of an embodiment of the support assembly of this utility model;
[0044] Figure 6 This is a schematic diagram of an embodiment of the connection between the hanger and the side cover of this utility model.
[0045] In the picture:
[0046] Arc extinguishing chamber 1, support assembly 2, support 201, connecting plate 202, caster 203, stabilizing seat 204, spring 205, movable column 206, limiting plate 207, intermediate cover 3, positioning sleeve 301, side cover 4, hanger 5, upper half ring 501, lower half ring 502, connecting plate 503, first lifting ring 504, limiting ring 505, side hanger 6, boom 601, second lifting ring 602, insertion hole 603, fixing block 604. Detailed Implementation
[0047] Example 1:
[0048] like Figure 1 , 2As shown in Figure 3, a cage-type lifting device for a GCB arc-extinguishing chamber includes a support assembly 2, an intermediate cover 3, and side covers 4 forming a three-dimensional cage frame. The intermediate cover 3 wraps around the center of the arc-extinguishing chamber 1 along its axial direction, and both ends are closed by the side covers 4, forming a fully enclosed protective structure. The lifting frame 5 and the side covers 6 form a composite lifting system, realizing multi-point force lifting of the arc-extinguishing chamber. The arc-extinguishing chamber 1 refers to the GCB arc-extinguishing chamber being lifted. During lifting, the existing crane used for lifting GCB arc-extinguishing chambers is used to connect the lifting frame 5 and the side covers 6 for lifting operations. The operation is simple, and the multi-point force lifting method ensures the stability of the lifting.
[0049] The intermediate cover 3 adopts a two-part symmetrical structure. An inner positioning sleeve 301, adapted to the shape of the arc-extinguishing chamber, is installed on its inner side. A 3-5mm thick neoprene rubber pad with a Shore hardness of 60±5 is adhered to the inner wall of the positioning sleeve 301, effectively absorbing vibration energy during lifting. A 1-2mm gap is reserved between the positioning sleeve 301 and the arc-extinguishing chamber 1, ensuring positioning accuracy while providing buffer space.
[0050] The hanger 5 is a ring structure consisting of an upper half-ring 501 and a lower half-ring 502 bolted together by a connecting plate 503, and is fitted onto both ends of the intermediate cover 3. The limiting rings 505 at the edges of the intermediate cover 3 are embedded in the pre-reserved limiting grooves of the upper half-ring 501 and the lower half-ring 502, forming an axial positioning structure. The first lifting ring 504 welded to the top of the upper half-ring 501 is made of Q345B steel with a tensile strength ≥510MPa, capable of withstanding twice the rated lifting weight.
[0051] In one embodiment, the side cover 4 is divided into upper and lower parts, which are fixed to the upper half ring 501 and lower half ring 502 of the hanger 5 respectively by M12 bolts. During assembly, the middle cover 3 is first placed over the outside of the arc-extinguishing chamber 1, and then the upper half ring 501 and lower half ring 502 are assembled so that the limiting ring 505 enters the limiting groove reserved in the upper half ring 501 and lower half ring 502. During the assembly process, the side cover 4 is assembled synchronously, and then the installation is completed by fixing it with bolts and nuts at the connecting plate 503. Conversely, it can be disassembled. The operation is simple.
[0052] In another embodiment, such as Figure 6 As shown, the side cover 4 is provided with a limiting ring 505 on its outer periphery; the limiting rings 505 of the middle cover 3 and the side cover 4 are fitted together; during assembly, the middle cover 3 is first placed over the outside of the arc-extinguishing chamber 1, and then the side covers 4 are placed on both sides of the arc-extinguishing chamber 1. Then, the upper half ring 501 and the lower half ring 502 are fitted together and sleeved at the connection between the middle cover 3 and the side cover 4, so that the limiting ring 505 enters the limiting groove reserved in the upper half ring 501 and the lower half ring 502. Then, the installation can be completed by fixing it with bolts and nuts at the connecting plate 503. Conversely, it can be disassembled. The operation is simple.
[0053] After the connection is completed, a cage-like protective layer is formed, which can protect the arc-extinguishing chamber 1 during hoisting and prevent it from being damaged by impact.
[0054] The boom 601 of the side hoist 6 is connected to the arc-extinguishing chamber 1, and the second lifting ring 602 is connected to the boom 601 via a pin. In use, the existing hoisting equipment connects the first lifting ring 504 and the second lifting ring 602 via a hoisting rope and a hook to hoist the arc-extinguishing chamber 1.
[0055] Furthermore, such as Figure 4 As shown, the intermediate cover 3 has a plug-in hole 603, and the boom 601 has a fixing block 604. The fixing block 604 extends into the interior of the plug-in hole 603 and abuts against the top wall of the plug-in hole 603. During the hoisting process, the force generated by the hoisting will act on the intermediate cover 3 through the boom 601 and the fixing block 604, thereby distributing the force generated during the hoisting process through the intermediate cover 3, reducing the force acting on the arc-extinguishing chamber 1, and thus increasing the protection effect on the arc-extinguishing chamber 1.
[0056] In a further embodiment, such as Figure 5 As shown, the support assembly 2 includes a connecting plate 202 connected to the arc-extinguishing chamber 1; a support 201 is provided at the bottom of the connecting plate 202; four casters 203 are installed at the bottom of the support 201, each caster 203 has a rated load of ≥500kg and has horizontal adjustment and locking functions. The caster adjustment screw has a stroke of 50mm, which can adapt to a ground slope of ±3°, ensuring the stability of the lifting device on uneven ground.
[0057] The connecting plate 202 of the support assembly 2 is slidably connected to the support 201 via a stabilizing seat 204. A spring 205 is provided at the bottom of the stabilizing seat 204, and the movable column 206 passes through the base plate of the support and is provided with a limiting plate 207. Optionally, the maximum displacement of the stabilizing seat is limited to 20mm, forming a two-stage buffer structure. During the lowering process after hoisting, the impact force generated when it first touches the ground will be buffered by the spring 205, thereby preventing the impact force during the placement process from affecting the arc-extinguishing chamber 1 and protecting the arc-extinguishing chamber 1.
[0058] This application is mainly used for GCB arc-extinguishing chambers, but is not limited to GCB arc-extinguishing chambers. Therefore, GCB arc-extinguishing chambers should not be construed as a limitation of this application.
[0059] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.
Claims
1. A cage-type lifting device for a GCB arc-extinguishing chamber, characterized in that: Includes a support assembly (2) connected to the arc-extinguishing chamber (1); An intermediate cover (3) is provided on the outer periphery of the arc-extinguishing chamber (1), and side covers (4) are provided at both ends of the intermediate cover (3). The intermediate cover (3) and the two side covers (4) are combined to enclose the arc-extinguishing chamber (1); The side of the arc-extinguishing chamber (1) is equipped with a side hanger (6), and the side cover (4) is equipped with a hanger (5).
2. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 1, characterized in that: The intermediate cover (3) is divided into two equal parts along the axis; The inner side of the intermediate cover (3) is provided with a positioning sleeve (301), which abuts against the arc extinguishing chamber (1). The inner side of the positioning sleeve (301) is adapted to the arc-extinguishing chamber (1); The positioning sleeve (301) has a rubber pad inside.
3. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 1, characterized in that: The hanger (5) includes an upper half ring (501) and a lower half ring (502). The upper half ring (501) and the lower half ring (502) are combined into a ring and fitted onto both ends of the intermediate cover (3). The edge of the intermediate cover (3) is provided with a limiting ring (505), which is located inside the upper half ring (501) and the lower half ring (502); A connecting plate (503) is provided at the connection between the upper half ring (501) and the lower half ring (502), and the connecting plate (503) is fixed by bolts and nuts; The top of the upper half ring (501) is provided with a first hanging ring (504).
4. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 3, characterized in that: The side cover (4) is divided into two parts, which are fixedly connected to the upper half ring (501) and the lower half ring (502) respectively.
5. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 3, characterized in that: The side cover (4) is provided with a limiting ring (505) on its outer periphery; The limiting rings (505) of the middle cover (3) and the side cover (4) are fitted together. The upper half ring (501) and the lower half ring (502) are combined and fitted onto the connection between the middle cover (3) and the side cover (4), and are located outside the limiting ring (505).
6. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 1, characterized in that: The side-mounted (6) includes a boom (601) fixedly connected to the arc-extinguishing chamber (1). The boom (601) is provided with a second lifting ring (602), which passes through the intermediate cover (3) and is located outside the intermediate cover (3).
7. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 6, characterized in that: The interior of the intermediate cover (3) is provided with a plug-in hole (603); The boom (601) is provided with a fixing block (604) that extends into the interior of the insertion hole (603) and abuts against the top wall of the insertion hole (603).
8. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 1, characterized in that: The support assembly (2) includes a connecting plate (202) connected to the arc-extinguishing chamber (1); The bottom of the connecting plate (202) is provided with a bracket (201).
9. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 8, characterized in that: The bottom of the bracket (201) is equipped with several casters (203); The caster (203) is a Foma caster.
10. The cage-type lifting device for a GCB arc-extinguishing chamber according to claim 8, characterized in that: The bottom of the connecting plate (202) is provided with a stabilizing seat (204), which is slidably connected to the inside of the bracket (201); The bottom of the stabilizer (204) is provided with a spring (205) and a movable column (206); The movable column (206) passes through the spring (205) and the bracket (201); The bottom end of the movable column (206) is provided with a limiting plate (207).