GCB arc extinguish chamber maintenance operation device and operation method thereof

Abstract

The invention discloses a GCB arc extinguish chamber maintenance operation device and an operation method thereof.The GCB arc extinguish chamber maintenance operation device comprises a frame, trundles are installed at the bottom of the frame, the frame is of a U-shaped structure with one side open, the frame is provided with a containing channel, the two sides of the top of the frame are each provided with at least one lifting device, and lifting bases are installed at the tops of the lifting devices; a plurality of first hanging rings are fixedly arranged at the bottom of the lifting seat, a sliding hole is formed in the side, facing the opening of the frame body, of the lifting seat, one end of the telescopic part is slidably inserted into the sliding hole, and at least one second hanging ring is fixedly arranged on the lower side of the other end of the telescopic part; a telescopic device is mounted at the top of the lifting seat and connected with the telescopic part; a sliding rail is mounted at the bottom of the lifting seat; and a sliding hanging seat is mounted in the sliding rail. When the device is used for overhauling the GCB arc extinguish chamber, hoisting equipment does not need to be used, on-site on-site overhauling can be carried out, when parts in the GCB arc extinguish chamber are disassembled, assistance can be carried out, and on-site on-site overhauling is more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of GCB arc-extinguishing chamber maintenance technology, and in particular to a GCB arc-extinguishing chamber maintenance device and its operation method. Background Technology

[0002] GCB arc-extinguishing chamber maintenance is typically performed on a work platform in the maintenance workshop. Because equipment maintenance and disassembly require lifting, tilting, and transportation, not only are lifting tools such as bridge cranes needed, but also tools for transporting related components of the GCB arc-extinguishing chamber. This requires a significant amount of space and prevents on-site maintenance, completely failing to meet the needs of emergency repairs. To make rational use of space and perform safe, efficient, and convenient GCB arc-extinguishing chamber maintenance while reducing the use of related tools, we have designed a GCB arc-extinguishing chamber maintenance work device as described in this application.

[0003] In the prior art, Chinese patent document CN120824662A, published on October 21, 2025, discloses a GCB arc-extinguishing chamber dismantling device, including a frame, a positioning structure at the bottom of the frame, an open top, and a cantilevered portion extending outward from one side of the top of the frame. A crossbar is movably installed on the top of the frame, and sliders are longitudinally slidably installed on both sides of the frame. The bottom of the sliders is connected to a lifting device, which is supported and installed on the frame. A clamping structure is installed on the sliders, including a limiting unit, a connecting rod, and a rotating tube. The rotating tube is horizontally and rotatably installed on the sliders. The connecting rod is threadedly engaged with the inner hole of the rotating tube. A limiting unit for clamping the GCB arc-extinguishing chamber is rotatably installed at one end of the connecting rod that is close to the frame, and a turning part is provided at the other end of the connecting rod. Its advantages are: it can easily disassemble the GCB arc-extinguishing chamber; its disadvantages are: firstly, when using this device, the GCB arc-extinguishing chamber needs to be hoisted and placed on the support base, which requires the assistance of hoisting equipment; secondly, this device cannot assist in disassembling the internal parts of the GCB arc-extinguishing chamber. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a GCB arc-extinguishing chamber maintenance device and its operation method, which eliminates the need for hoisting equipment when maintaining the GCB arc-extinguishing chamber, allowing for on-site maintenance. It also provides assistance when disassembling internal parts of the GCB arc-extinguishing chamber, making on-site maintenance more convenient.

[0005] To achieve the above objectives, this application provides a GCB arc-extinguishing chamber maintenance device, including a frame with casters installed at the bottom. The frame is a U-shaped structure with one open side and has a receiving channel. At least one lifting device is installed on each of the two sides of the top of the frame. A lifting seat is installed on the top of the lifting device. Multiple first lifting rings are fixed at the bottom of the lifting seat. A sliding hole is provided on the side of the lifting seat facing the open side of the frame. One end of the telescopic member is slidably inserted into the sliding hole, and at least one second lifting ring is fixed on the lower side of the other end. A telescopic device is installed on the top of the lifting seat and is connected to the telescopic member. A slide rail is installed at the bottom of the lifting seat, and a sliding hanging seat is installed in the slide rail.

[0006] The lifting device and the telescopic device are either electric cylinders or electric push rods.

[0007] Four guide rods are symmetrically installed on the top of the frame, and a top plate is installed on the top of the guide rods. The lifting seat is provided with sliding holes at the corresponding positions of the guide rods, and the guide rods slide through the sliding holes. The lifting device includes a screw, a nut sleeve, and a reduction motor. The upper and lower ends of the screw are rotatably connected to the top plate and the frame, respectively. The nut sleeve is fixedly installed on the lifting seat and is screwed into the screw. The reduction motor is installed on the frame, and the output shaft of the reduction motor is connected to the screw for transmission.

[0008] The top plate has a U-shaped structure.

[0009] The lifting seat has a U-shaped structure, with a polygonal guide tube fixed in the middle of the lifting seat. The guide tube has a sliding hole inside, and reinforcing rods are fixed on both sides of the guide tube. The reinforcing rods are then fixed to the lifting seat. The slide rail is fixedly installed on the lower side of the guide tube.

[0010] The telescopic component includes a longitudinal rod and a transverse rod. The longitudinal rod is fixed to the middle of the transverse rod and is perpendicular to the transverse rod. The longitudinal rod is inserted into the sliding hole, and the second lifting ring is fixed to the lower side of the transverse rod.

[0011] The slide rail includes two Z-shaped plates arranged opposite each other, and a sliding hanger is installed between the two Z-shaped plates. The sliding hanger includes a sliding seat, with rollers rotatably mounted on both ends of the sliding seat via axles. A third hanging ring is fixed on the lower side of the sliding seat. The sliding seat is located between the two Z-shaped plates, and the rollers on both sides are supported on the two Z-shaped plates respectively. The third hanging ring extends downward.

[0012] A method for overhauling a GCB arc-extinguishing chamber, used for overhauling a GCB arc-extinguishing chamber, employs a GCB arc-extinguishing chamber overhauling device, and the overhauling method includes the steps of flipping and disassembling the GCB arc-extinguishing chamber and the steps of disassembling the GCB arc-extinguishing chamber in sections.

[0013] The steps for flipping and disassembling the GCB arc-extinguishing chamber include: S10. Move the maintenance equipment to the outside of the GCB arc-extinguishing chamber, which is located within the receiving passage. S11. One end of each of the two first tightening ropes is tied to the upper side of the GCB arc-extinguishing chamber, and the other ends of the two first tightening ropes are located on both sides of the GCB arc-extinguishing chamber, and the two first tightening ropes are respectively connected to the first lifting rings on both sides of the bottom of the lifting seat. S12. The lifting platform is raised using the lifting device to lift the GCB arc-extinguishing chamber. S13. Then tie one end of the second tightening rope to the lower side of the GCB arc-extinguishing chamber, and tie the other end of the second tightening rope to the second lifting ring at the bottom of the telescopic component. S14. The telescopic device drives the telescopic component to extend, thereby flipping the GCB arc-extinguishing chamber from the longitudinal state to the lateral state; S15. Tie one end of each of the two third tightening ropes to the lower side of the GCB arc-extinguishing chamber, and tie one end of each third tightening rope to the other two first lifting rings at the bottom of the lifting seat. Then, the telescopic device drives the telescopic component to retract and remove the end of the second tightening rope connected to the GCB arc-extinguishing chamber. S16. When disassembling the internal parts of the GCB arc extinguishing chamber, the parts are lifted out using the telescopic component and the second tightening rope.

[0014] The steps for disassembling the GCB arc-extinguishing chamber in sections are as follows: S20. With the GCB arc-extinguishing chamber in a vertical position, remove the connecting bolts of the upper part of the GCB arc-extinguishing chamber. S21. One end of the first tightening rope is tied to the upper part, and the other end of the first tightening rope is tied to the sliding hanger; at the same time, one end of the second tightening rope is tied to the upper part, and the other end of the second tightening rope is tied to the second hanging ring at the bottom of the telescopic component. S22. Lift the lifting platform using the lifting device to raise the upper part; S23. The telescopic device drives the telescopic component to extend, pulling the upper part out of the receiving channel.

[0015] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: The frame of this invention is a U-shaped structure with one open side, which facilitates the fitting of the device onto the outside of the GCB arc-extinguishing chamber. The lifting seat is raised and lowered by a lifting device, making it easy to lift the GCB arc-extinguishing chamber, thus eliminating the need for hoisting equipment and enabling on-site maintenance and transportation. A telescopic component is retractably installed on the side of the lifting seat facing the frame. The telescopic device drives the telescopic component to extend and retract, assisting in the maintenance of the GCB arc-extinguishing chamber, including assisting in the rotation of the GCB arc-extinguishing chamber, the hoisting of parts, and the dismantling of the upper and middle components of the GCB arc-extinguishing chamber, making on-site maintenance more convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the main structure of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the lifting seat of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the slide rail installed at the lower part of the conduit of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the sliding suspension bracket in this invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the telescopic component in this invention.

[0023] Figure 7 This is a schematic diagram illustrating the use of the present invention.

[0024] Figure 8 This is a schematic diagram showing the first tightening rope being attached to the upper side of the GCB arc-extinguishing chamber during use of the present invention.

[0025] Figure 9 This is a schematic diagram showing the upward lifting of the GCB arc-extinguishing chamber during the use of this invention.

[0026] Figure 10 This is a schematic diagram illustrating the flipping of the GCB arc-extinguishing chamber during the use of this invention.

[0027] Figure 11 This is a schematic diagram illustrating how the internal parts are disassembled using a telescopic component when the present invention is being used.

[0028] Figure 12 This is a schematic diagram showing the first tightening rope being attached to the upper part of the GCB arc-extinguishing chamber during use of the present invention.

[0029] Figure 13 This is a schematic diagram illustrating the lifting and separation of the upper component of the GCB arc-extinguishing chamber during use of the present invention.

[0030] Figure 14 This is a schematic diagram showing the upper part of the GCB arc-extinguishing chamber being pulled out of the receiving channel when using the present invention.

[0031] Figure Labels GCB arc-extinguishing chamber 100; First tightening rope 1, second tightening rope 2, third tightening rope 3; Frame 10, receiving channel 11, casters 12, guide rod 13, top plate 14, handle 15, counterweight 16; Lifting seat 20, sliding hole 21, first lifting ring 22, guide tube 23, sliding hole 231, reinforcing rod 24, slide rail 25, Z-shaped plate 251, insertion hole 26; Lifting device 30, screw 31, nut sleeve 32, geared motor 33; Telescopic component 40, longitudinal rod 41, transverse rod 42, single ear seat 43, second lifting ring 44; Telescopic device 50; Sliding hanger 60, sliding seat 61, axle 62, roller 63, positioning hole 64, third lifting ring 65; GCB arc extinguishing chamber 100. Detailed Implementation

[0032] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be specifically noted that the specific embodiments described below are only for illustrating the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0033] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0034] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0035] Example 1: See Figure 1-7This embodiment provides a GCB arc-extinguishing chamber maintenance device, including a frame 10, with casters 12 installed at the bottom of the frame 10. The frame 10 is a U-shaped structure with one side open and has a receiving channel 11. At least one lifting device 30 is installed on each of the two sides of the top of the frame 10. A lifting seat 20 is installed on the top of the lifting device 30. Multiple first lifting rings 22 are fixed at the bottom of the lifting seat 20. A sliding hole 231 is provided on the side of the lifting seat 20 facing the frame 10. One end of the telescopic member 40 is slidably inserted into the sliding hole 231, and at least one second lifting ring 44 is fixed on the lower side of the other end. A telescopic device 50 is installed on the top of the lifting seat 20 and is connected to the telescopic member 40. A slide rail 25 is installed at the bottom of the lifting seat 20, and a sliding hanging seat 60 is installed in the slide rail 25.

[0036] The frame 10 has a U-shaped structure with one side open, making it easy for the device to be fitted onto the outside of the GCB arc-extinguishing chamber 100. The lifting seat 20 is raised and lowered by the lifting device 30, facilitating the lifting of the GCB arc-extinguishing chamber 100, thus eliminating the need for hoisting equipment and allowing for on-site maintenance. A telescopic component 40 is telescopically installed on the side of the lifting seat 20 facing the frame 10. The telescopic device 50 is used to drive the telescopic component 40 to extend and retract, providing assistance during GCB arc-extinguishing chamber maintenance and making on-site maintenance more convenient.

[0037] In this embodiment, the lifting device 30 and the telescopic device 50 can be either an electric cylinder or an electric push rod.

[0038] See Figure 1 , 2 In order to facilitate the operation of the maintenance device to move the GCB arc-extinguishing chamber 100, two handles 15 are fixedly connected to the side of the frame 10 opposite to the open side.

[0039] Furthermore, in order to improve the stability of the maintenance operation device, a counterweight 16 is fixedly installed on the side of the frame 10 opposite to the open side.

[0040] Example 2: The difference between this embodiment and Embodiment 1 is that, see [link to Embodiment 1] Figure 1 , 2 Four guide rods 13 are symmetrically installed on the top of the frame 10, and a top plate 14 is installed on the top of the guide rods 13. The lifting seat 20 is provided with sliding holes 21 at the positions corresponding to the guide rods 13, and the guide rods 13 slide through the sliding holes 21.

[0041] The lifting device 30 includes a screw 31, a nut sleeve 32, and a geared motor 33. The upper and lower ends of the screw 31 are rotatably connected to the top plate 14 and the frame 10, respectively. The nut sleeve 32 is fixedly installed on the lifting seat 20, and the nut sleeve 32 is screwed into the screw 31. The geared motor 33 is installed on the frame 10, and its output shaft is connected to the screw 31 for transmission. The screw 31 is driven to rotate by the geared motor 33, thereby raising and lowering the lifting seat 20.

[0042] In this embodiment, the top plate 14 has a U-shaped structure, and the lifting seat 20 also has a U-shaped structure.

[0043] See Figure 3 A polygonal guide tube 23 is fixedly connected to the middle of the lifting seat 20. A sliding hole 231 is formed inside the guide tube 23. Reinforcing rods 24 are fixedly connected to both sides of the guide tube 23, and the reinforcing rods 24 are then fixedly connected to the lifting seat 20. A slide rail 25 is fixedly installed on the lower side of the guide tube 23. In this embodiment, the guide tube 23 is a rectangular tube.

[0044] See Figure 6 The telescopic component 40 includes a longitudinal rod 41 and a transverse rod 42. The longitudinal rod 41 is fixed to the middle of the transverse rod 42. The longitudinal rod 41 is perpendicular to the transverse rod 42 and has a T-shaped structure. The cross section of the longitudinal rod 41 is rectangular. The longitudinal rod 41 is slidably inserted into the sliding hole 231. The second lifting ring 44 is fixed on the lower side of the transverse rod 42.

[0045] Specifically, a single ear seat 43 is provided at the top of the transverse rod 42, a double ear seat is provided at the top of the conduit 23, one end of the telescopic device 50 is hinged to the double ear seat, and the other end is hinged to the single ear seat 43.

[0046] See Figure 3 , 4 The slide rail 25 includes two Z-shaped plates 251, which are arranged opposite to each other. A sliding hanger 60 is installed between the two Z-shaped plates 251. The above structure can not only improve the structural strength of the guide tube 23, but also facilitate the sliding hanger 60 to slide within the slide rail 25.

[0047] Specifically, see Figure 5 The sliding support 60 includes a sliding seat 61. Rollers 63 are rotatably mounted on both ends of the sliding seat 61 via axles 62. A third lifting ring 65 is fixed on the lower side of the sliding seat 61. The sliding seat 61 is located between two Z-shaped plates 251. The rollers 63 on both sides are supported on the two Z-shaped plates 251 respectively. The third lifting ring 65 extends downward.

[0048] See Figure 3 , 5The slide rail 25 has a socket 26 in the middle and the sliding seat 61 has a positioning hole 64 in the middle. Before lifting the upper part of the GCB arc extinguishing chamber 100 through the sliding seat 60, the positioning hole 64 is aligned with the socket 26 and a pin is inserted to limit the sliding seat 60. This prevents the sliding seat 60 from sliding to one side in the slide rail 25 when the lifting seat 20 drives the sliding seat 60 to rise due to uneven ground.

[0049] Example 3: Based on Embodiment 1 or 2, the present invention also discloses a method for overhauling a GCB arc-extinguishing chamber, which is used for overhauling a GCB arc-extinguishing chamber and employs a GCB arc-extinguishing chamber overhauling device. The overhauling method includes the steps of flipping and disassembling the GCB arc-extinguishing chamber and the steps of disassembling the GCB arc-extinguishing chamber in sections.

[0050] Specifically, the steps for flipping and disassembling the GCB arc-extinguishing chamber include: S10. Move the maintenance equipment to the outside of the GCB arc-extinguishing chamber 100, which is located within the receiving channel 11. Figure 7 As shown.

[0051] S11. One end of each of the two first tensioning ropes 1 is tied to the upper side of the GCB arc-extinguishing chamber 100, and the other ends of the two first tensioning ropes 1 are located on both sides of the GCB arc-extinguishing chamber 100, respectively. Furthermore, the two first tensioning ropes 1 are connected to the first lifting rings 22 on both sides of the bottom of the lifting seat 20, as follows: Figure 8 As shown.

[0052] S12. The lifting platform 20 is raised by the lifting device 30, thus lifting the GCB arc-extinguishing chamber 100. Figure 9 As shown.

[0053] S13. Then, tie one end of the second tightening rope 2 to the lower side of the GCB arc-extinguishing chamber 100, and tie the other end of the second tightening rope 2 to the second lifting ring 44 at the bottom of the telescopic component 40, as follows: Figure 9 As shown.

[0054] S14, the telescopic device 50 drives the telescopic component 40 to extend, thereby flipping the GCB arc-extinguishing chamber 100 from the longitudinal state to the lateral state, as shown. Figure 10 As shown.

[0055] S15. Tie one end of each of the two third tightening ropes 3 to the lower side of the GCB arc-extinguishing chamber 100. Tie one end of the third tightening rope 3 to the other two first lifting rings 22 at the bottom of the lifting seat 20. Then, the telescopic device 50 drives the telescopic component 40 to retract and remove the end of the second tightening rope 2 connected to the GCB arc-extinguishing chamber 100.

[0056] S16. When disassembling the internal parts of the GCB arc-extinguishing chamber 100, the parts are lifted out with the assistance of the telescopic component 40 and the second tightening rope 2, such as Figure 11 As shown.

[0057] Specifically, the steps for disassembling the GCB arc-extinguishing chamber in sections are as follows: S20. With the GCB arc-extinguishing chamber 100 in a vertical position, remove the connecting bolts of the upper part of the GCB arc-extinguishing chamber 100.

[0058] S21. One end of the first tightening rope 1 is tied to the upper part, and the other end of the first tightening rope 1 is tied to the sliding hanger 60; simultaneously, one end of the second tightening rope 2 is tied to the upper part, and the other end of the second tightening rope 2 is tied to the second hanging ring 44 at the bottom of the telescopic member 40, as follows. Figure 12 As shown.

[0059] S22. The lifting platform 20 is lifted by the lifting device 30, thus hoisting the upper part. Figure 13 As shown.

[0060] S23, the telescopic device 50 drives the telescopic component 40 to extend, pulling the upper part out of the receiving channel 11, such as Figure 14 As shown. Then, place the upper part onto the lifting platform.

[0061] After removing the upper part of the GCB arc-extinguishing chamber 100, the middle part of the GCB arc-extinguishing chamber 100 can also be disassembled using the same steps.

[0062] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the invention. Modifications and variations made by those skilled in the art in accordance with the spirit of the invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A maintenance device for a GCB arc-extinguishing chamber, comprising a frame (10), wherein casters (12) are mounted on the bottom of the frame (10), characterized in that: The frame (10) is a U-shaped structure with one side open. The frame (10) has a receiving channel (11). At least one lifting device (30) is installed on each side of the top of the frame (10). A lifting seat (20) is installed on the top of the lifting device (30). Multiple first lifting rings (22) are fixed at the bottom of the lifting seat (20). A sliding hole (231) is provided on the side of the lifting seat (20) facing the frame (10). One end of the telescopic member (40) is slidably inserted into the sliding hole (231), and at least one second lifting ring (44) is fixed on the lower side of the other end. A telescopic device (50) is installed on the top of the lifting seat (20). The telescopic device (50) is connected to the telescopic member (40). A slide rail (25) is installed at the bottom of the lifting seat (20). A sliding hanging seat (60) is installed in the slide rail (25).

2. The GCB arc-extinguishing chamber maintenance device according to claim 1, characterized in that: The lifting device (30) and the telescopic device (50) are either electric cylinders or electric push rods.

3. The GCB arc-extinguishing chamber maintenance device according to claim 1, characterized in that: Four guide rods (13) are symmetrically installed on the top of the frame (10), and a top plate (14) is installed on the top of the guide rods (13); the lifting seat (20) is provided with sliding holes (21) at the positions corresponding to the guide rods (13), and the guide rods (13) slide through the sliding holes (21); the lifting device (30) includes a screw (31), a nut sleeve (32) and a reduction motor (33), the upper and lower ends of the screw (31) are rotatably connected to the top plate (14) and the frame (10) respectively, the nut sleeve (32) is fixedly installed on the lifting seat (20), the nut sleeve (32) and the screw (31) are screwed together, the reduction motor (33) is installed on the frame (10), and the output shaft of the reduction motor (33) is connected to the screw (31) for transmission.

4. The GCB arc-extinguishing chamber maintenance device according to claim 3, characterized in that: The top plate (14) has a U-shaped structure.

5. The GCB arc-extinguishing chamber maintenance device according to claim 1, characterized in that: The lifting seat (20) has a U-shaped structure. A polygonal guide tube (23) is fixedly connected to the middle of the lifting seat (20). The sliding hole (231) is formed inside the guide tube (23). Reinforcing rods (24) are fixedly connected to both sides of the guide tube (23). The reinforcing rods (24) are then fixedly connected to the lifting seat (20). The slide rail (25) is fixedly installed on the lower side of the guide tube (23).

6. The GCB arc-extinguishing chamber maintenance device according to claim 1, characterized in that: The telescopic component (40) includes a longitudinal rod (41) and a transverse rod (42). The longitudinal rod (41) is fixed to the middle of the transverse rod (42). The longitudinal rod (41) is perpendicular to the transverse rod (42). The longitudinal rod (41) is inserted into the sliding hole (231). The second lifting ring (44) is fixed on the lower side of the transverse rod (42).

7. The GCB arc-extinguishing chamber maintenance device according to claim 1, characterized in that: The slide rail (25) includes two Z-shaped plates (251), which are arranged opposite to each other. A sliding hanger (60) is installed between the two Z-shaped plates (251). The sliding hanger (60) includes a sliding seat (61). Rollers (63) are rotatably installed on both ends of the sliding seat (61) via axles (62). A third hanging ring (65) is fixed on the lower side of the sliding seat (61). The sliding seat (61) is located between the two Z-shaped plates (251). The rollers (63) on both sides are supported on the two Z-shaped plates (251) respectively. The third hanging ring (65) extends downward.

8. A method for overhauling a GCB arc-extinguishing chamber, used for overhauling a GCB arc-extinguishing chamber, characterized in that: The device for overhauling a GCB arc-extinguishing chamber according to any one of claims 1 to 7 is used. The overhaul method includes the steps of flipping and disassembling the GCB arc-extinguishing chamber and disassembling the GCB arc-extinguishing chamber in sections.

9. A method for overhauling a GCB arc-extinguishing chamber according to claim 8, characterized in that: The steps for flipping and disassembling the GCB arc-extinguishing chamber include: S10. Move the maintenance equipment to the outside of the GCB arc-extinguishing chamber (100), which is located inside the receiving passage (11). S11. One end of each of the two first tightening ropes (1) is tied to the upper side of the GCB arc-extinguishing chamber (100), and the other ends of the two first tightening ropes (1) are located on both sides of the GCB arc-extinguishing chamber (100), and the two first tightening ropes (1) are connected to the first lifting rings (22) on both sides of the bottom of the lifting seat (20). S12. The lifting seat (20) is lifted by the lifting device (30) to lift the GCB arc-extinguishing chamber (100); S13. Then tie one end of the second tightening rope (2) to the lower side of the GCB arc-extinguishing chamber (100), and tie the other end of the second tightening rope (2) to the second hanging ring (44) at the bottom of the telescopic component (40); S14, the telescopic device (50) drives the telescopic component (40) to extend, thereby flipping the GCB arc-extinguishing chamber (100) from the longitudinal state to the transverse state; S15. Tie one end of each of the two third tightening ropes (3) to the lower side of the GCB arc-extinguishing chamber (100), and tie one end of the third tightening rope (3) to the other two first lifting rings (22) at the bottom of the lifting seat (20). Then, the telescopic device (50) drives the telescopic component (40) to retract and remove the end of the second tightening rope (2) connected to the GCB arc-extinguishing chamber (100). S16. When disassembling the internal parts of the GCB arc-extinguishing chamber (100), the parts are lifted out by the telescopic member (40) and the second tightening rope (2).

10. A method for overhauling a GCB arc-extinguishing chamber according to claim 8, characterized in that: The steps for disassembling the GCB arc-extinguishing chamber in sections are as follows: S20. With the GCB arc-extinguishing chamber (100) in a vertical position, remove the connecting bolts of the upper part of the GCB arc-extinguishing chamber (100); S21. One end of the first tightening rope (1) is tied to the upper part, and the other end of the first tightening rope (1) is tied to the sliding hanger (60); at the same time, one end of the second tightening rope (2) is tied to the upper part, and the other end of the second tightening rope (2) is tied to the second hanging ring (44) at the bottom of the telescopic member (40). S22. Lift the lifting seat (20) by using the lifting device (30) to lift the upper part; S23, the telescopic device (50) drives the telescopic component (40) to extend, pulling the upper part out of the receiving channel (11).

Images